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Sample records for programmable digital compensator

  1. Digital compensation of nonlinear distortion in loudspeakers

    NARCIS (Netherlands)

    de Vries, Ruurd; Berkhoff, Arthur P.; Slump, Cornelis H.; Herrmann, O.E.

    The authors present a method to compensate for loudspeaker distortion in real time by nonlinear digital signal processing implemented on a digital signal processor (i.e., the TMS320C30 DSP). Based on the literature, an electrical equivalent circuit of an electrodynamic loudspeaker is developed,

  2. Depth Compensated Spectral Domain Optical Coherence Tomography via Digital Compensation

    CERN Document Server

    Boroomand, Ameneh; Shafiee, Mohammad Javad; Bizheva, Kostadinka; Wong, Alexander

    2015-01-01

    Spectral Domain Optical Coherence Tomography (SD-OCT) is a well-known imaging modality which allows for \\textit{in-vivo} visualization of the morphology of different biological tissues at cellular level resolutions. The overall SD-OCT imaging quality in terms of axial resolution and Signal-to-Noise Ratio (SNR) degrades with imaging depth, while the lateral resolution degrades with distance from the focal plane. This image quality degradation is due both to the design of the SD-OCT imaging system and the optical properties of the imaged object. Here, we present a novel Depth Compensated SD-OCT (DC-OCT) system that integrates a Depth Compensating Digital Signal Processing (DC-DSP) module to improve the overall imaging quality via digital compensation. The designed DC-DSP module can be integrated to any SD-OCT system and is able to simultaneously compensate for the depth-dependent loss of axial and lateral resolutions, depth-varying SNR, as well as sidelobe artifact for improved imaging quality. The integrated D...

  3. Principles of designing digital compensating accelerometers

    Science.gov (United States)

    Skalon, A. I.

    1985-05-01

    Digital compensating accelerometers use three types of feedback: (1) analog feedback with voltage-to-code or current-to-code conversion; (2) pulse-current conversion; pulse-current feedback; or (3) mechanical feedback through mass and strings. An accelerometer with voltage-to-code conversion, consists of a sensor, a position transducer, and amplifier which also converts the amplified signal to feedback current, an analog-to-digital converter shunted by a precision resistor, and a compensating current-to-force or current-to-torque converter. An accelerometer with current-to-code conversion includes, a reversible counter, a pulse generator, a current stabilizer, and a threshold device, all in parallel between two switches feeding into the feedback loop with an integrating capacitor across. In an accelerometer with a mass suspended betwen two orthogonal pairs of strings, the mass is the sensing element and the vibration frequency differences of the strings are the basis for compensation. Accelerometers with pulse-current feedback have a modulator behind a plain signal amplifier and a low-leakage transistor switch between the modulator and the compensating converter, this switch is also connected to a current stabilizer. The accuracy of the accelerometers is determined only by the error of the compensating converter, the instability and the nonlinearity of the current stabilizer, and the quality of the transistor switch.

  4. Programmable Analog-To-Digital Converter

    Science.gov (United States)

    Kist, Edward H., Jr.

    1993-01-01

    High-speed analog-to-digital converter with programmable voltage steps that can be changed during operation. Allows concentration of converter resolution over specific portion of waveform. Particularly useful in digitizing wind-shear radar and lidar return signals, in digital oscilloscopes, and other applications in which desirable to increase digital resolution over specific area of waveform while accepting lower resolution over rest of waveform. Effective increase in dynamic range achieved without increase in number of analog-to-digital converter bits. Enabling faster analog-to-digital conversion.

  5. Adaptive slope compensation for high bandwidth digital current mode controller

    DEFF Research Database (Denmark)

    Taeed, Fazel; Nymand, Morten

    2015-01-01

    An adaptive slope compensation method for digital current mode control of dc-dc converters is proposed in this paper. The compensation slope is used for stabilizing the inner current loop in peak current mode control. In this method, the compensation slope is adapted with the variations...... in converter duty cycle. The adaptive slope compensation provides optimum controller operation in term of bandwidth over wide range of operating points. In this paper operation principle of the controller is discussed. The proposed controller is implemented in an FPGA to control a 100 W buck converter...

  6. A Digitally Programmable Differential Integrator with Enlarged Time Constant

    Directory of Open Access Journals (Sweden)

    S. K. Debroy

    1994-12-01

    Full Text Available A new Operational Amplifier (OA-RC integrator network is described. The novelties of the design are used of single grounded capacitor, ideal integration function realization with dual-input capability and design flexibility for extremely large time constant involving an enlargement factor (K using product of resistor ratios. The aspect of the digital control of K through a programmable resistor array (PRA controlled by a microprocessor has also been implemented. The effect of the OA-poles has been analyzed which indicates degradation of the integrator-Q at higher frequencies. An appropriate Q-compensation design scheme exhibiting 1 : |A|2 order of Q-improvement has been proposed with supporting experimental observations.

  7. 16 GHz dielectric resonator oscillators with digital temperature compensation

    Science.gov (United States)

    Slobodnik, A. J., Jr.; Stiglitz, M. R.; Roberts, G. A.

    1984-11-01

    A digital compensation technique for improving the temperature stability of dielectric resonator oscillators (DROs) is described. Current results with a 16.1 GHz DRO show a reduction in the temperature sensitivity of frequency of almost two orders of magnitude from 309 ppm to 3.8 ppm over the range of 16 to 52 C. This is an average value of only 0.1 ppm/C.

  8. No-fault compensation following adverse events attributed to vaccination: a review of international programmes

    National Research Council Canada - National Science Library

    Looker, Clare; Kelly, Heath

    2011-01-01

    Programmes that provide no-fault compensation for an adverse event following vaccination have been implemented in 19 countries worldwide, the first in Germany in 1961 and the most recent in Hungary in 2005...

  9. Programmable rate modem utilizing digital signal processing techniques

    Science.gov (United States)

    Naveh, Arad

    1992-01-01

    The need for a Programmable Rate Digital Satellite Modem capable of supporting both burst and continuous transmission modes with either Binary Phase Shift Keying (BPSK) or Quadrature Phase Shift Keying (QPSK) modulation is discussed. The preferred implementation technique is an all digital one which utilizes as much digital signal processing (DSP) as possible. The design trade-offs in each portion of the modulator and demodulator subsystem are outlined.

  10. Issues in the digital implementation of control compensators. Ph.D. Thesis

    Science.gov (United States)

    Moroney, P.

    1979-01-01

    Techniques developed for the finite-precision implementation of digital filters were used, adapted, and extended for digital feedback compensators, with particular emphasis on steady state, linear-quadratic-Gaussian compensators. Topics covered include: (1) the linear-quadratic-Gaussian problem; (2) compensator structures; (3) architectural issues: serialism, parallelism, and pipelining; (4) finite wordlength effects: quantization noise, quantizing the coefficients, and limit cycles; and (5) the optimization of structures.

  11. Building Digital Economy - The Research Councils Programme and the Vision

    Science.gov (United States)

    Hand, John

    We at the Research Councils believe that there are many aspects of society and business that could be transformed by the innovative design and use of digital technologies. This has led to the Digital Economy Programme. The Digital Economy is an RCUK Cross-Research Council Programme, led by the EPSRC, but working closely with ESRC, MRC, AHRC and TSB. What is Digital Economy? Digital Economy is the novel design or use of information and communication technology to help transform the lives of individuals, society or business. All Digital Economy research involves the user community. This can include industry, government, society, charities or other groups as applicable. The research will understand the technologies and also why change is needed, what the impacts will be and who will benefit. Research in this cross-research council area can be driven by economic, social or technical need. The early involvement of the user community is vital if new technologies are to be integrated successfully into business opportunities, technical solutions or commercial products and processes. Challenges in the Digital Economy will require multi-disciplinary academic input, including, but not limited to, the arts and humanities, economic and social sciences and medical sciences, in addition to engineering and physical sciences.

  12. Digital Fingerprinting of Field Programmable Gate Arrays

    Science.gov (United States)

    2008-03-01

    feature size necessitates a redesign and new fabrication run. As a result, the FPGA has become popular in the commercial market, and by extension in DoD...in a pseudo-computer language, VHDL or Verilog , and downloading it to the FPGA to run. Updates are as simple as adding a few new lines of code, running...television operating by 1’s and 0’s. The truth is that the world is actually analog and that the devices considered digital are, in reality, dealing

  13. Can digital tools be used for improving immunization programmes?

    Directory of Open Access Journals (Sweden)

    Alberto Eugenio Tozzi

    2016-03-01

    Full Text Available In order to successfully control and eliminate vaccine-preventable infectious diseases, an appropriate vaccine coverage has to be achieved and maintained. This task requires a high level of effort, as it may be compromised by a number of barriers. Public health agencies have issued specific recommendations to address these barriers and therefore improve immunization programmes. In the present review, we characterize issues and challenges of immunization programmes for which digital tools are a potential solution. In particular, we explore previously published research on the use of digital tools in the following vaccine-related areas: immunization registries, dose tracking, and decision support systems; vaccine preventable diseases surveillance; surveillance of adverse events following immunizations; vaccine confidence monitoring; delivery of information on vaccines to the public. Subsequently, we analyze the limits of the use of digital tools in such contexts and envision future possibilities and challenges.

  14. Digitally Programmable High-Q Voltage Mode Universal Filter

    Directory of Open Access Journals (Sweden)

    D. Singh

    2013-12-01

    Full Text Available A new low-voltage low-power CMOS current feedback amplifier (CFA is presented in this paper. This is used to realize a novel digitally programmable CFA (DPCFA using transistor arrays and MOS switches. The proposed realizations nearly allow rail-to-rail swing capability at all the ports. Class-AB output stage ensures low power dissipation and high current drive capability. The proposed CFA/ DPCFA operates at supply voltage of ±0.75 V and exhibits bandwidth better than 95 MHz. An application of the DPCFA to realize a novel voltage mode high-Q digitally programmable universal filter (UF is given. Performances of all the proposed circuits are verified by PSPICE simulation using TSMC 0.25μm technology parameters.

  15. A digital magnetic resonance imaging spectrometer using digital signal processor and field programmable gate array.

    Science.gov (United States)

    Liang, Xiao; Binghe, Sun; Yueping, Ma; Ruyan, Zhao

    2013-05-01

    A digital spectrometer for low-field magnetic resonance imaging is described. A digital signal processor (DSP) is utilized as the pulse programmer on which a pulse sequence is executed as a subroutine. Field programmable gate array (FPGA) devices that are logically mapped into the external addressing space of the DSP work as auxiliary controllers of gradient control, radio frequency (rf) generation, and rf receiving separately. The pulse programmer triggers an event by setting the 32-bit control register of the corresponding FPGA, and then the FPGA automatically carries out the event function according to preset configurations in cooperation with other devices; accordingly, event control of the spectrometer is flexible and efficient. Digital techniques are in widespread use: gradient control is implemented in real-time by a FPGA; rf source is constructed using direct digital synthesis technique, and rf receiver is constructed using digital quadrature detection technique. Well-designed performance is achieved, including 1 μs time resolution of the gradient waveform, 1 μs time resolution of the soft pulse, and 2 MHz signal receiving bandwidth. Both rf synthesis and rf digitalization operate at the same 60 MHz clock, therefore, the frequency range of transmitting and receiving is from DC to ~27 MHz. A majority of pulse sequences have been developed, and the imaging performance of the spectrometer has been validated through a large number of experiments. Furthermore, the spectrometer is also suitable for relaxation measurement in nuclear magnetic resonance field.

  16. Implementation of Adaptive Digital Controllers on Programmable Logic Devices

    Science.gov (United States)

    Gwaltney, David A.; King, Kenneth D.; Smith, Keary J.; Monenegro, Justino (Technical Monitor)

    2002-01-01

    Much has been made of the capabilities of FPGA's (Field Programmable Gate Arrays) in the hardware implementation of fast digital signal processing. Such capability also makes an FPGA a suitable platform for the digital implementation of closed loop controllers. Other researchers have implemented a variety of closed-loop digital controllers on FPGA's. Some of these controllers include the widely used proportional-integral-derivative (PID) controller, state space controllers, neural network and fuzzy logic based controllers. There are myriad advantages to utilizing an FPGA for discrete-time control functions which include the capability for reconfiguration when SRAM-based FPGA's are employed, fast parallel implementation of multiple control loops and implementations that can meet space level radiation tolerance requirements in a compact form-factor. Generally, a software implementation on a DSP (Digital Signal Processor) or microcontroller is used to implement digital controllers. At Marshall Space Flight Center, the Control Electronics Group has been studying adaptive discrete-time control of motor driven actuator systems using digital signal processor (DSP) devices. While small form factor, commercial DSP devices are now available with event capture, data conversion, pulse width modulated (PWM) outputs and communication peripherals, these devices are not currently available in designs and packages which meet space level radiation requirements. In general, very few DSP devices are produced that are designed to meet any level of radiation tolerance or hardness. The goal of this effort is to create a fully digital, flight ready controller design that utilizes an FPGA for implementation of signal conditioning for control feedback signals, generation of commands to the controlled system, and hardware insertion of adaptive control algorithm approaches. An alternative is required for compact implementation of such functionality to withstand the harsh environment

  17. Online digital offset voltage compensation method for AMR sensors

    NARCIS (Netherlands)

    Zambrano Constantini, A.C.; Kerkhoff, Hans G.

    2015-01-01

    The offset voltage is an undesirable voltage included at the output of an anisotropic magnetoresistance angle sensor, which affects the accuracy of the angle measurement. This voltage changes with sensor aging and hence should be compensated not just at the moment of manufacturing but also during

  18. Carbon Nanotubes-Based Digitally Programmable Current Follower

    Directory of Open Access Journals (Sweden)

    S. K. Tripathi

    2018-01-01

    Full Text Available The physical constraints of ever-shrinking CMOS transistors are rapidly approaching atomistic and quantum mechanical limits. Therefore, research is now directed towards the development of nanoscale devices that could work efficiently in the sub-10 nm regime. This coupled with the fact that recent design trend for analog signal processing applications is moving towards current-mode circuits which offer lower voltage swings, higher bandwidth, and better signal linearity is the motivation for this work. A digitally controlled DVCC has been realized using CNFETs. This work exploited the CNFET’s parameters like chirality, pitch, and numbers of CNTs to perform the digital control operation. The circuit has minimum number of transistors and can control the output current digitally. A similar CMOS circuit with 32 nm CMOS parameters was also simulated and compared. The result shows that CMOS-based circuit requires 418.6 μW while CNFET-based circuit consumes 352.1 μW only. Further, the proposed circuit is used to realize a CNFET-based instrumentation amplifier with digitally programmable gain. The amplifier has a CMRR of 100 dB and ICMR equal to 0.806 V. The 3 dB bandwidth of the amplifier is 11.78 GHz which is suitable for the applications like navigation, radar instrumentation, and high-frequency signal amplification and conditioning.

  19. Generation-3 programmable array microscope (PAM) with digital micro-mirror device (DMD)

    Science.gov (United States)

    De Beule, Pieter A. A.; de Vries, Anthony H. B.; Arndt-Jovin, Donna J.; Jovin, Thomas M.

    2011-03-01

    We report progress on the construction of an optical sectioning programmable array microscope (PAM) implemented with a digital micro-mirror device (DMD) spatial light modulator (SLM) utilized for both fluorescence illumination and detection. The introduction of binary intensity modulation at the focal plane of a microscope objective in a computer controlled pixilated mode allows the recovery of an optically sectioned image. Illumination patterns can be changed very quickly, in contrast to static Nipkow disk or aperture correlation implementations, thereby creating an optical system that can be optimized to the optical specimen in a convenient manner, e.g. for patterned photobleaching, photobleaching reduction, or spatial superresolution. We present a third generation (Gen-3) dual path PAM module incorporating the 25 kHz binary frame rate TI 1080p DMD and a newly developed optical system that offers diffraction limited imaging with compensation of tilt angle distortion.

  20. Linear and Nonlinear Impairment Compensation in Coherent Optical Transmission with Digital Signal Processing

    DEFF Research Database (Denmark)

    Porto da Silva, Edson

    Digital signal processing (DSP) has become one of the main enabling technologies for the physical layer of coherent optical communication networks. The DSP subsystems are used to implement several functionalities in the digital domain, from synchronization to channel equalization. Flexibility...... scenarios. Concerning (II), it is demonstrated how optical and electrical (digital) pulse shaping can be allied to improve the spectral confinement of a particular class of optical time-division multiplexing (OTDM) signals that can be used as a building block for fast signaling single-carrier transceivers...... nonlinearity compensation, (II) spectral shaping, and (III) adaptive equalization. For (I), original contributions are presented to the study of the nonlinearity compensation (NLC) with digital backpropagation (DBP). Numerical and experimental performance investigations are shown for different application...

  1. Digital nonlinearity compensation in high-capacity optical communication systems considering signal spectral broadening effect.

    Science.gov (United States)

    Xu, Tianhua; Karanov, Boris; Shevchenko, Nikita A; Lavery, Domaniç; Liga, Gabriele; Killey, Robert I; Bayvel, Polina

    2017-10-11

    Nyquist-spaced transmission and digital signal processing have proved effective in maximising the spectral efficiency and reach of optical communication systems. In these systems, Kerr nonlinearity determines the performance limits, and leads to spectral broadening of the signals propagating in the fibre. Although digital nonlinearity compensation was validated to be promising for mitigating Kerr nonlinearities, the impact of spectral broadening on nonlinearity compensation has never been quantified. In this paper, the performance of multi-channel digital back-propagation (MC-DBP) for compensating fibre nonlinearities in Nyquist-spaced optical communication systems is investigated, when the effect of signal spectral broadening is considered. It is found that accounting for the spectral broadening effect is crucial for achieving the best performance of DBP in both single-channel and multi-channel communication systems, independent of modulation formats used. For multi-channel systems, the degradation of DBP performance due to neglecting the spectral broadening effect in the compensation is more significant for outer channels. Our work also quantified the minimum bandwidths of optical receivers and signal processing devices to ensure the optimal compensation of deterministic nonlinear distortions.

  2. Digital pre-compensation techniques enabling high-capacity bandwidth variable transponders

    Science.gov (United States)

    Napoli, Antonio; Berenguer, Pablo Wilke; Rahman, Talha; Khanna, Ginni; Mezghanni, Mahdi M.; Gardian, Lennart; Riccardi, Emilio; Piat, Anna Chiadò; Calabrò, Stefano; Dris, Stefanos; Richter, André; Fischer, Johannes Karl; Sommerkorn-Krombholz, Bernd; Spinnler, Bernhard

    2018-02-01

    Digital pre-compensation techniques are among the enablers for cost-efficient high-capacity transponders. In this paper we describe various methods to mitigate the impairments introduced by state-of-the-art components within modern optical transceivers. Numerical and experimental results validate their performance and benefits.

  3. Electronic post-compensation of WDM transmission impairments using coherent detection and digital signal processing.

    Science.gov (United States)

    Li, Xiaoxu; Chen, Xin; Goldfarb, Gilad; Mateo, Eduardo; Kim, Inwoong; Yaman, Fatih; Li, Guifang

    2008-01-21

    A universal post-compensation scheme for fiber impairments in wavelength-division multiplexing (WDM) systems is proposed based on coherent detection and digital signal processing (DSP). Transmission of 10 x 10 Gbit/s binary-phase-shift-keying (BPSK) signals at a channel spacing of 20 GHz over 800 km dispersion shifted fiber (DSF) has been demonstrated numerically.

  4. Digital innovations and emerging technologies for enhanced recovery programmes

    DEFF Research Database (Denmark)

    Michard, F; Gan, T J; Kehlet, H

    2017-01-01

    .Preoperative physical condition, a major determinant of postoperative outcome, could be optimized with the use of text messages (SMS) or digital applications (Apps) designed to facilitate smoking cessation, modify physical activity, and better manage hypertension and diabetes. Several non-invasive haemodynamic......Enhanced recovery programmes (ERPs) are increasingly used to improve post-surgical recovery. However, compliance to various components of ERPs-a key determinant of success-remains sub-optimal. Emerging technologies have the potential to help patients and caregivers to improve compliance with ERPs......-respiratory function may help in the early detection of clinical deterioration during the postoperative recovery and to address 'failure to rescue'. Activity trackers may be useful to monitor early mobilization, another major element of ERPs. Finally, electronic checklists have been developed to ensure that none...

  5. Graphical Evaluation of Time-Delay Compensation Techniques for Digitally Controlled Converters

    DEFF Research Database (Denmark)

    Lu, Minghui; Wang, Xiongfei; Loh, Poh Chiang

    2018-01-01

    A main design constraint of the digitally controlled power electronics converters is the time delay of control systems, which may lead to the reduced control loop bandwidth and even unstable dynamics. Numerous time-delay compensation methods have been developed, of which the model-free schemes...... are independent to model accuracy whereas the model-based alternatives are sensitive to system modeling. This paper first presents a graphical illustration of four model-free delay compensation techniques, where their principles and performances are intuitively elaborated and compared by means of the impulse area....... Simulations and experimental test results validate the effectiveness of the graphical comparisons and the proposed approach....

  6. Digital innovations and emerging technologies for enhanced recovery programmes.

    Science.gov (United States)

    Michard, F; Gan, T J; Kehlet, H

    2017-07-01

    Enhanced recovery programmes (ERPs) are increasingly used to improve post-surgical recovery. However, compliance to various components of ERPs-a key determinant of success-remains sub-optimal. Emerging technologies have the potential to help patients and caregivers to improve compliance with ERPs.Preoperative physical condition, a major determinant of postoperative outcome, could be optimized with the use of text messages (SMS) or digital applications (Apps) designed to facilitate smoking cessation, modify physical activity, and better manage hypertension and diabetes. Several non-invasive haemodynamic monitoring techniques and decision support tools are now available to individualize perioperative fluid management, a key component of ERPs. Objective nociceptive assessment may help to rationalize the use of pain medications, including opioids. Wearable sensors designed to monitor cardio-respiratory function may help in the early detection of clinical deterioration during the postoperative recovery and to address 'failure to rescue'. Activity trackers may be useful to monitor early mobilization, another major element of ERPs. Finally, electronic checklists have been developed to ensure that none of the above-mentioned ERP elements is omitted during the surgical journey.By optimizing compliance to the multiple components of ERPs, digital innovations, non-invasive techniques and wearable sensors have the potential to magnify the clinical and economic benefits of ERPs. Among the growing number of technical innovations, studies are needed to clarify which tools and solutions have real clinical value and are cost-effective. © The Author 2017. Published by Oxford University Press on behalf of the British Journal of Anaesthesia. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  7. Implement of Digital Moire technique on DSP for alignment of partial compensation interferometer

    Science.gov (United States)

    Tian, Yuhan; QunHao; YaoHu; Wang, Shaopu; Li, Tengfei; Wang, Jingxian

    2016-01-01

    Digital Moiré technique is adopted in partial compensation interferometer (PCI) for high-precision testing of figure error of the aspheric surfaces. The figure error of the measured aspheric is obtained by a series of calculation with the real interferogram and ideal interferograms generated by computer. The dense interference fringes at the exit pupil make it difficult to align the PCI. On the contrary, digital Moire fringes composed from real and ideal interferograms are sparse and corresponding to the figure error of the measured aspheric, making it easier to align the PCI. Generally, digital Moire technique is processed on the computer, resulting in slow processing speed and difficult display in real time. Digital Signal Processor (DSP) can be used to implement digital Moire technique and display digital Moire fringes in real time with its powerful processing capacity. In this paper, digital Moire technique is implemented on the TMS320C6455 DSP. The hardware system consists of a DSP module, a CCD camera and a monitor. Finally we experimentally obtain the digital Moire image, and further analyze how to align the PCI theoretically.

  8. Chromatic aberration compensation in numerical reconstruction of digital holograms by Fresnel-Bluestein propagation.

    Science.gov (United States)

    Hincapie, Diego; Velasquez, Daniel; Garcia-Sucerquia, Jorge

    2017-12-15

    In this Letter, we present a method for chromatic compensation in numerical reconstruction of digitally recorded holograms based on Fresnel-Bluestein propagation. The proposed technique is applied to correct the chromatic aberration that arises in the reconstruction of RGB holograms of both millimeter- and micrometer-sized objects. The results show the feasibility of this strategy to remove the wavelength dependence of the size of the numerically propagated wavefields.

  9. Experimental demonstration of a real-time high-throughput digital DC blocker for compensating ADC imperfections in optical fast-OFDM receivers.

    Science.gov (United States)

    Zhang, Lu; Ouyang, Xing; Shao, Xiaopeng; Zhao, Jian

    2016-06-27

    Performance degradation induced by the DC components at the output of real-time analogue-to-digital converter (ADC) is experimentally investigated for optical fast-OFDM receiver. To compensate this degradation, register transfer level (RTL) circuits for real-time digital DC blocker with 20GS/s throughput are proposed and implemented in field programmable gate array (FPGA). The performance of the proposed real-time digital DC blocker is experimentally investigated in a 15Gb/s optical fast-OFDM system with intensity modulation and direct detection over 40 km standard single-mode fibre. The results show that the fixed-point DC blocker has negligible performance penalty compared to the offline floating point one, and can overcome the error floor of the fast OFDM receiver caused by the DC components from the real-time ADC output.

  10. Digital Compensation in IQ Modulator Using Optimization—A State-Space Approach

    Directory of Open Access Journals (Sweden)

    Lim AGKC

    2005-01-01

    Full Text Available In DSP-based IQ modulators generating CPFSK signals, shortcomings in the implementation of the analog reconstruction filters result in the loss of the constant envelope property of the output CPFSK signal. These ripples cause undesirable spreading of the transmitted signal spectrum into adjacent channels when the signal passes through nonlinear elements in the transmission path and the consequent failure of the transmitted signal in meeting transmission standards requirements. Therefore, digital techniques compensating for these shortcomings play an important role in enhancing the performance of the IQ modulation system. Recently, several methods have been proposed in the literature to digitally compensate for the imperfections in the transfer characteristics of the analog reconstruction filters. Although these methods have been shown to be effective in removing the output envelope ripples, they result in filters of high orders and are therefore computationally demanding to implement on the DSP. Furthermore, previous techniques suffer from numerical instabilities as a result of matrix inversion in the process of calculating the solution vector. In this paper, we present two new techniques for designing the digital compensation filters by means of optimization to address the limitations of previous solutions. Design of control systems by optimization is now a standard technique. Simulation examples show that these techniques are effective and lead to substantial improvement of the output envelope ripples.

  11. Feedforward Compensation of Harmonic Distortion Produced by Pulse Width Modulation For Full-digital Audio Amplifier

    Science.gov (United States)

    Yoneya, Akihiko; Watanabe, Akira

    The full-digital audio amplifiers are advantageous with the points of its high power efficiency and its possibility of high fidelity due to the digital signal processing. With the full-digital amplifier, class-D amplifiers are used to drive the load with PWM signals produced from the source signal. Unfortunately, the signals are distorted when the PCM signals are converted to the PWM signals because the pulse-width modulation is a nonlinear conversion from the viewpoint of transient responses. This paper proposes a way to compensate the distortion caused by the pulse-width modulation. A feedforward compensation approach is used because of the simplicity of implementation. The distortion components are estimated with the source signals and its time-derivative signals and used to cancel out them by subtracting them from the source signals. A numerical example with two-tone test is performed to show the effectiveness of the proposed method. The distortion compensation scheme used here may be applicative to other applications.

  12. Application of Field programmable Gate Array to Digital Signal ...

    African Journals Online (AJOL)

    FPGA) can be applied to digital signal processing problem to increase computational speed. The best algorithm for solving Digital Signal Processing Applications; Fast Fourier Transform (FFT) algorithm has shown significant speed improvement ...

  13. Thermal error analysis and compensation for digital image/volume correlation

    Science.gov (United States)

    Pan, Bing

    2018-02-01

    Digital image/volume correlation (DIC/DVC) rely on the digital images acquired by digital cameras and x-ray CT scanners to extract the motion and deformation of test samples. Regrettably, these imaging devices are unstable optical systems, whose imaging geometry may undergo unavoidable slight and continual changes due to self-heating effect or ambient temperature variations. Changes in imaging geometry lead to both shift and expansion in the recorded 2D or 3D images, and finally manifest as systematic displacement and strain errors in DIC/DVC measurements. Since measurement accuracy is always the most important requirement in various experimental mechanics applications, these thermal-induced errors (referred to as thermal errors) should be given serious consideration in order to achieve high accuracy, reproducible DIC/DVC measurements. In this work, theoretical analyses are first given to understand the origin of thermal errors. Then real experiments are conducted to quantify thermal errors. Three solutions are suggested to mitigate or correct thermal errors. Among these solutions, a reference sample compensation approach is highly recommended because of its easy implementation, high accuracy and in-situ error correction capability. Most of the work has appeared in our previously published papers, thus its originality is not claimed. Instead, this paper aims to give a comprehensive overview and more insights of our work on thermal error analysis and compensation for DIC/DVC measurements.

  14. A customizable multi-channel loudness compensation method based on WDRC for digital hearing aids

    Science.gov (United States)

    Hu, Jiebin; Wang, Mingjiang; Ma, Min

    2017-08-01

    Loudness compensation is the most significant signal processing algorithm in digital hearing aids at present. An algorithm of multi-channel loudness compensation for embedded system has been put forward in this paper. The number of channels is customizable in this algorithm. The algorithm can set different number and different width of channels for each patient based on frequency domain wide dynamic range compression. First, according to the requirement of patient to divide the frequency domain into multiple unequal frequency bands. And then calculate the gain of each channel according to the input-output curve of sound pressure level. Finally, the time-domain impulse response of gain is computed from Mel filter banks. It is used in conjunction with speech enhancement processing in hearing aids. Simulation results show that the algorithm can effectively enhance the loudness for different frequencies.

  15. A programmable, multichannel power supply for SIPMs with temperature compensation loop and Ethernet interface

    Science.gov (United States)

    Querol, M.; Rodríguez, J.; Toledo, J.; Esteve, R.; Álvarez, V.; Herrero, V.

    2016-12-01

    Among the different techniques available, the SiPM power supply described in this paper uses output voltage and sensor temperature feedback. A high-resolution ADC digitizes both the output voltage and an analog signal proportional to the SiPM temperature for each of its 16 independent outputs. The appropriate change in the bias voltage is computed in a micro-controller and this correction is applied via a high resolution DAC to the control input of a DC/DC module that produces the output voltage. This method allows a reduction in gain variations from typically 30% to only 0.5% in a 10 °C range. The power supply is housed in a 3U-height aluminum box. A 2.8'' touch screen on the front panel provides local access to the configuration and monitoring functions using a graphical interface. The unit has an Ethernet interface on its rear side to provide remote operation and integration in slow control systems using the encrypted and secure SSH protocol. A LabVIEW application with SSH interface has been designed to operate the power supply from a remote computer. The power supply has good characteristics, such as 85 V output range with 1 mV resolution and stability better than 2 mVP, excellent output load regulation and programmable rise and fall voltage ramps. Commercial power supplies from well-known manufacturers can show far better specifications though can also result in an over featured and over costly solution for typical applications.

  16. On-line nonuniformity and temperature compensation of uncooled IRFPAs using embedded digital hardware

    Science.gov (United States)

    Wolf, Alejandro; Redlich, Rodolfo; Figueroa, Miguel; Pezoa, Jorge E.

    2013-09-01

    We present a model and a signal-processing algorithm for compensating the nonuniformity (NU) noise and surrounding temperature self-heating e ects on the response of uncooled microbolometer-based infrared cameras. The model for the NU noise considers pixelwise gain and o set parameters. The representation for the self-heating dynamics of the camera is an autoregressive moving average (ARMA) model for camera's internal temperature. The algorithm performs initially a two-point calibration at a known surrounding temperature. Next, without modifying the NU parameters, we dynamically compensate variations in the camera readout using both estimates of the ARMA model and measurements of the surrounding temperature taken by a simple sensor embedded in the camera. Tested on a CEDIP Jade UC33 camera, our system compensates reference black-body images at 30 degrees Celsius, with a peak error below 1.3 and a mean error below 0.3 degrees Celsius, in scenarios where the room temperature varied up to 14 degrees Celsius. Moreover, the regularity and simplicity of the algorithm enables us to implement it on embedded digital hardware, thereby reducing its cost, size, and power consumption. We implemented the algorithm on a Xilinx XC6SLX45 FPGA using xed-point arithmetic. The circuit exhibits an arithmetic error of 0.06 degrees compared to a software double-precision implementation. It compensates 320 × 240-pixel video at up to 1,437 fps and 640 × 480-pixel video at up to 360 fps, using 1% of the logic resources of the FPGA, and less than 1 mW of dynamic power at 110 MHz. Adding Gigabit Ethernet communication, HDMI display, and a pseudocolor map on the chip uses 10% of the resources and consumes 915 mW.

  17. Digital mammography in a screening programme and its implications for pathology: a comparative study.

    LENUS (Irish Health Repository)

    Feeley, Linda

    2011-03-01

    Most studies comparing full-field digital mammography (FFDM) with conventional screen-film mammography (SFM) have been radiology-based. The pathological implications of FFDM have received little attention in the literature, especially in the context of screening programmes. The primary objective of this retrospective study is to compare FFDM with SFM in a population-based screening programme with regard to a number of pathological parameters.

  18. Digital model of TiO(2 memristor for field-programmable gate array

    Directory of Open Access Journals (Sweden)

    Guangyi Wang

    2014-03-01

    Full Text Available A digital model which imitates the behaviour of a TiO(2 memristor as a new block in Alter DSP Builder is proposed in this Letter. The proposed model can be used as an independent memristor unit working with other units for designing memristor circuits based on field-programmable gate array. The accuracy of the digital model is confirmed not only by simulations, but also by hardwire experiments.

  19. Modelling and Simulation of Digital Compensation Technique for dc-dc Converter by Pole Placement

    Science.gov (United States)

    Shenbagalakshmi, R.; Sree Renga Raja, T.

    2015-09-01

    A thorough and effective analysis of the dc-dc converters is carried out in order to achieve the system stability and to improve the dynamic performance. A small signal modelling based on state space averaging technique for dc-dc converters is carried out. A digital state feedback gain matrix is derived by pole placement technique in order to achieve the stability of a completely controllable system. A prediction observer for the dc-dc converters is designed and a dynamic compensation (observer plus control law) is provided using separation principle. The output is very much improved with zero output voltage ripples, zero peak overshoot, and much lesser settling time in the range of ms and with higher overall efficiency (>90 %).

  20. The GES Connect Digitally Programme: Shaping Parental Engagement through Technology

    OpenAIRE

    Strickley, Alan; Spiers, Tim

    2011-01-01

    International audience; The engagement of parents with the education and learning of their children is known to have beneficial effects (Harris & Goodall (2007), Ofsted (2007) and DfES (2007a)). Following on from the article by Strickley (2009) which looked at the holistic view of a parental Gateway to Educational Services (GES) this paper focuses on the work, during 2009, towards the GES Connect Digitally vision (GES, 2009a). It looks, specifically from a technological standpoint, at the pro...

  1. An Undergraduate Course and Laboratory in Digital Signal Processing with Field Programmable Gate Arrays

    Science.gov (United States)

    Meyer-Base, U.; Vera, A.; Meyer-Base, A.; Pattichis, M. S.; Perry, R. J.

    2010-01-01

    In this paper, an innovative educational approach to introducing undergraduates to both digital signal processing (DSP) and field programmable gate array (FPGA)-based design in a one-semester course and laboratory is described. While both DSP and FPGA-based courses are currently present in different curricula, this integrated approach reduces the…

  2. Designed cell consortia as fragrance-programmable analog-to-digital converters.

    Science.gov (United States)

    Müller, Marius; Ausländer, Simon; Spinnler, Andrea; Ausländer, David; Sikorski, Julian; Folcher, Marc; Fussenegger, Martin

    2017-03-01

    Synthetic biology advances the rational engineering of mammalian cells to achieve cell-based therapy goals. Synthetic gene networks have nearly reached the complexity of digital electronic circuits and enable single cells to perform programmable arithmetic calculations or to provide dynamic remote control of transgenes through electromagnetic waves. We designed a synthetic multilayered gaseous-fragrance-programmable analog-to-digital converter (ADC) allowing for remote control of digital gene expression with 2-bit AND-, OR- and NOR-gate logic in synchronized cell consortia. The ADC consists of multiple sampling-and-quantization modules sensing analog gaseous fragrance inputs; a gas-to-liquid transducer converting fragrance intensity into diffusible cell-to-cell signaling compounds; a digitization unit with a genetic amplifier circuit to improve the signal-to-noise ratio; and recombinase-based digital expression switches enabling 2-bit processing of logic gates. Synthetic ADCs that can remotely control cellular activities with digital precision may enable the development of novel biosensors and may provide bioelectronic interfaces synchronizing analog metabolic pathways with digital electronics.

  3. Preliminary design of an advanced programmable digital filter network for large passive acoustic ASW systems. [Parallel processor

    Energy Technology Data Exchange (ETDEWEB)

    McWilliams, T.; Widdoes, Jr., L. C.; Wood, L.

    1976-09-30

    The design of an extremely high performance programmable digital filter of novel architecture, the LLL Programmable Digital Filter, is described. The digital filter is a high-performance multiprocessor having general purpose applicability and high programmability; it is extremely cost effective either in a uniprocessor or a multiprocessor configuration. The architecture and instruction set of the individual processor was optimized with regard to the multiple processor configuration. The optimal structure of a parallel processing system was determined for addressing the specific Navy application centering on the advanced digital filtering of passive acoustic ASW data of the type obtained from the SOSUS net. 148 figures. (RWR)

  4. Piloting a National Programme for the Digitization of Medieval Manuscripts in Germany

    Directory of Open Access Journals (Sweden)

    Claudia Fabian

    2014-08-01

    Full Text Available An initiative to develop a concerted national programme for the digitization of medieval manuscripts in Germany was launched by five German manuscript centres in January 2013. This new proposal aims at the development of a master plan for the digitization of nearly all surviving medieval manuscripts in Germany and at the establishment of a new funding programme of the DFG (German Research Foundation, the largest research funding organization in Germany.Besides this fundamental financial aspect, other objectives are the diffusion of technical standards and know-how to less experienced cultural heritage institutions and the creation of a nationwide network of competent partners, e.g. in the areas of digitization itself, long-term storage of digital data, the administration of persistent identifiers, and the internet presentation of digital collections. An important role will be played by the German manuscripts portal, Manuscripta Mediaevalia, which is intended as the central hub for both the presentation of digital collections of German manuscripts, but also of the relevant metadata, that is, digital and ideally searchable full-text versions of scholarly, in-depth manuscript descriptions. Of course, this centralization and aggregation will also facilitate the exchange of data with other institutions.The pilot phase will lead to the definition of a national digitization strategy with a clear prioritization of projects to be approached. It also aims at the creation of a sustainable technical infrastructure for the integration of both primary and secondary digital data. In this way, the current fragmentation of information in a plethora of local digitization projects is to be superseded by a unitary and complete virtual research environment for all those interested in medieval manuscripts from Germany.

  5. Field Programmable Gate Array for Implementation of Redundant Advanced Digital Feedback Control

    Science.gov (United States)

    King, K. D.

    2003-01-01

    The goal of this effort was to develop a digital motor controller using field programmable gate arrays (FPGAs). This is a more rugged approach than a conventional microprocessor digital controller. FPGAs typically have higher radiation (rad) tolerance than both the microprocessor and memory required for a conventional digital controller. Furthermore, FPGAs can typically operate at higher speeds. (While speed is usually not an issue for motor controllers, it can be for other system controllers.) Other than motor power, only a 3.3-V digital power supply was used in the controller; no analog bias supplies were used. Since most of the circuit was implemented in the FPGA, no additional parts were needed other than the power transistors to drive the motor. The benefits that FPGAs provide over conventional designs-lower power and fewer parts-allow for smaller packaging and reduced weight and cost.

  6. A digitizer based compact digital spectrometer for ion beam analysis using field programmable gate arrays and various energy algorithms

    Energy Technology Data Exchange (ETDEWEB)

    Jäger, Markus [Faculty of Mathematics and Computer Science, University of Leipzig, PF 100920, 04009 Leipzig (Germany); Reinert, Tilo [Department of Physics, University of North Texas, 1155 Union Circle, Denton, Texas 76203 (United States)

    2013-08-15

    We report on the implementation of a compact multi-detector fully digital spectrometer and data acquisition system at a nuclear microprobe for ion beam analysis and imaging. The spectrometer design allows for system scalability with no restriction on the number of detectors. It consists of four-channel high-speed digitizer modules for detector signal acquisition and one low-speed digital-to-analog converter (DAC) module with two DAC channels and additional general purpose inputs/outputs to control ion beam scanning and data acquisition. Each digitizer module of the spectrometer provides its own Field Programmable Gate Array (FPGA) as digital signal processing unit to analyze detector signals as well as to synchronize the ion beam position in hard real-time. With the customized FPGA designs for all modules, all calculation intensive tasks are executed inside the modules, which reduces significantly the data stream to and CPU load on the control computer. To achieve an optimal energy resolution for all detector/preamplifier pulse shape characteristics, a user-definable infinite impulse response filter with high throughput for energy determination was implemented. The new spectrometer has an online data analysis feature, a compact size, and is able to process any type of detector signals such as particle induced x-ray emission, Rutherford backscattering spectrometry, or scanning transmission ion microscopy.

  7. Multi-channel programmable power supply with temperature compensation for silicon sensors

    Science.gov (United States)

    Shukla, R. A.; Achanta, V. G.; Dugad, S. R.; Freeman, J.; Garde, C. S.; Gupta, S. K.; Khandekar, P. D.; Kurup, A. M.; Lokhandwala, S. S.; Los, S.; Prabhu, S. S.; Rakshe, P. S.

    2016-01-01

    Silicon Photo-Multipliers (SiPMs) are increasingly becoming popular for discrete photon counting applications due to the wealth of advantages they offer over conventional photo-detectors such as photo-multiplier tubes and hybrid photo-diodes. SiPMs are used in variety of applications ranging from high energy physics and nuclear physics experiments to medical diagnostics. The gain of a SiPM is directly proportional to the difference between applied and breakdown voltage of the device. However, the breakdown voltage depends critically on the ambient temperature and has a large temperature co-efficient in the range of 40-60 mV/°C resulting in a typical gain variation of 3%-5%/°C [Dinu et al., in IEEE Nuclear Science Symposium, Medical Imaging Conference and 17th Room Temperature Semiconductor Detector Workshop (IEEE, 2010), p. 215]. We plan to use the SiPM as a replacement for PMT in the cosmic ray experiment (GRAPES-3) at Ooty [Gupta et al., Nucl. Instrum. Methods Phys. Res., Sect. A 540, 311 (2005)]. There the SiPMs will be operated in an outdoor environment subjected to temperature variation of about 15 °C over a day. A gain variation of more than 50% was observed for such large variations in the temperature. To stabilize the gain of the SiPM under such operating conditions, a low-cost, multi-channel programmable power supply (0-90 V) was designed that simultaneously provides the bias voltage to 16 SiPMs. The programmable power supply (PPS) was designed to automatically adjust the operating voltage for each channel with a built-in closed loop temperature feedback mechanism. The PPS provides bias voltage with a precision of 6 mV and measures the load current with a precision of 1 nA. Using this PPS, a gain stability of 0.5% for SiPM (Hamamatsu, S10931-050P) has been demonstrated over a wide temperature range of 15 °C. The design methodology of the PPS system, its validation, and the results of the tests carried out on the SiPM is presented in this article. The

  8. The Positive and Negative Impact of an Intergenerational Digital Technology Education Programme on Younger People's Perceptions of Older Adults

    OpenAIRE

    Drury, Lisbeth; Bobrowicz, Ania; Cameron, Lindsey; Abrams, Dominic

    2017-01-01

    In order to meet the technological needs of older adults, and ensure digital inclusion, it is important for digital technology designers to accurately assess and understand older adults’ needs and requirements, free from the influence of societal assumptions of their capabilities. This study evaluated the impact of an intergenerational digital technology education programme on younger adults’ stereotypes of older people. Using an experimental design, results show that compared to a control gr...

  9. Compensation of multi-channel mismatches in high-speed high-resolution photonic analog-to-digital converter.

    Science.gov (United States)

    Yang, Guang; Zou, Weiwen; Yu, Lei; Wu, Kan; Chen, Jianping

    2016-10-17

    We demonstrate a method to compensate multi-channel mismatches that intrinsically exist in a photonic analog-to-digital converter (ADC) system. This system, nominated time-wavelength interleaved photonic ADC (TWI-PADC), is time-interleaved via wavelength demultiplexing/multiplexing before photonic sampling, wavelength demultiplexing channelization, and electronic quantization. Mismatches among multiple channels are estimated in frequency domain and hardware adjustment are used to approach the device-limited accuracy. A multi-channel mismatch compensation algorithm, inspired from the time-interleaved electronic ADC, is developed to effectively improve the performance of TWI-PADC. In the experiment, we configure out a 4-channel TWI-PADC system with 40 GS/s sampling rate based on a 10-GHz actively mode-locked fiber laser. After multi-channel mismatch compensation, the effective number of bit (ENOB) of the 40-GS/s TWI-PADC system is enhanced from ~6 bits to >8.5 bits when the RF frequency is within 0.1-3.1 GHz and from ~6 bits to >7.5 bits within 3.1-12.1 GHz. The enhanced performance of the TWI-PADC system approaches the limitation determined by the timing jitter and noise.

  10. A 7 μW Offset- and Temperature-Compensated pH-to-Digital Converter

    Directory of Open Access Journals (Sweden)

    Saleh Heidary Shalmany

    2017-01-01

    Full Text Available This paper demonstrates a micropower offset- and temperature-compensated smart pH sensor, intended for use in battery-powered RFID systems that monitor the quality of perishable products. Low operation power is essential in such systems to enable autonomous logging of environmental parameters, such as the pH level, over extended periods of time using only a small, low-cost battery. The pH-sensing element in this work is an ion-sensitive extended-gate field-effect transistor (EGFET, which is incorporated in a low-power sensor front-end. The front-end outputs a pH-dependent voltage, which is then digitized by means of a co-integrated incremental delta-sigma ADC. To compensate for the offset and temperature cross-sensitivity of the EGFET, a compensation scheme using a calibration process and a temperature sensor has been devised. A prototype chip has been realized in a 0.16 μm CMOS process. It occupies 0.35 × 3.9 mm2 of die area and draws only 4 μA from a 1.8 V supply. Two different types of custom packaging have been used for measurement purposes. The pH sensor achieves a linearity of better than ±0.1 for pH values ranging from 4 to 10. The calibration and compensation scheme reduces errors due to temperature cross-sensitivity to less than ±0.1 in the temperature range of 6°C to 25°C.

  11. Microwave metamaterials—from passive to digital and programmable controls of electromagnetic waves

    Science.gov (United States)

    Cui, Tie Jun

    2017-08-01

    Since 2004, my group at Southeast University has been carrying out research into microwave metamaterials, which are classified into three catagories: metamaterials based on the effective medium model, plasmonic metamaterials for spoof surface plasmon polaritons (SPPs), and coding and programmable metamaterials. For effective-medium metamaterials, we have developed a general theory to accurately describe effective permittivity and permeability in semi-analytical forms, from which we have designed and realized a three dimensional (3D) wideband ground-plane invisibility cloak, a free-space electrostatic invisibility cloak, an electromagnetic black hole, optical/radar illusions, and radially anisotropic zero-index metamaterial for omni-directional radiation and a nearly perfect power combination of source array, etc. We have also considered the engineering applications of microwave metamaterials, such as a broadband and low-loss 3D transformation-optics lens for wide-angle scanning, a 3D planar gradient-index lens for high-gain radiations, and a random metasurface for reducing radar cross sections. In the area of plasmonic metamaterials, we proposed an ultrathin, narrow, and flexible corrugated metallic strip to guide SPPs with a small bending loss and radiation loss, from which we designed and realized a series of SPP passive devices (e.g. power divider, coupler, filter, and resonator) and active devices (e.g. amplifier and duplexer). We also showed a significant feature of the ultrathin SPP waveguide in overcoming the challenge of signal integrity in traditional integrated circuits, which will help build a high-performance SPP wireless communication system. In the area of coding and programmable metamaterials, we proposed a new measure to describe a metamaterial from the viewpoint of information theory. We have illustrated theoretically and experimentally that coding metamaterials composed of digital units can be controlled by coding sequences, leading to different

  12. Step-by-Step Design of an FPGA-Based Digital Compensator for DC/DC Converters Oriented to an Introductory Course

    Science.gov (United States)

    Zumel, P.; Fernandez, C.; Sanz, M.; Lazaro, A.; Barrado, A.

    2011-01-01

    In this paper, a short introductory course to introduce field-programmable gate array (FPGA)-based digital control of dc/dc switching power converters is presented. Digital control based on specific hardware has been at the leading edge of low-medium power dc/dc switching converters in recent years. Besides industry's interest in this topic, from…

  13. programme

    African Journals Online (AJOL)

    Aid for AIDS (AfA) is a disease management programme (DIVIPI available to beneficiaries and employees of contracted medical funds and ... the challenges alluded to in the first article, including late enrolment and the measurement of survival, especially in patients with ... I the HIV prevalence and incidence (new infections].

  14. Digital Signal Processing Applications and Implementation for Accelerators Digital Notch Filter with Programmable Delay and Betatron Phase Adjustment for the PS, SPS and LHC Transverse Dampers

    CERN Document Server

    Rossi, V

    2002-01-01

    In the framework of the LHC project and the modifications of the SPS as its injector, I present the concept of global digital signal processing applied to a particle accelerator, using Field Programmable Gate Array (FPGA) technology. The approach of global digital synthesis implements in numerical form the architecture of a system, from the start up of a project and the very beginning of the signal flow. It takes into account both the known parameters and the future evolution, whenever possible. Due to the increased performance requirements of today's projects, the CAE design methodology becomes more and more necessary to handle successfully the added complexity and speed of modern electronic circuits. Simulation is performed both for behavioural analysis, to ensure conformity to functional requirements, and for time signal analysis (speed requirements). The digital notch filter with programmable delay for the SPS Transverse Damper is now fully operational with fixed target and LHC-type beams circulating in t...

  15. Programmable spectral engine design of hyperspectral image projectors based on digital micro-mirror device (DMD)

    Science.gov (United States)

    Wang, Xicheng; Gao, Jiaobo; Wu, Jianghui; Li, Jianjun; Cheng, Hongliang

    2017-02-01

    Recently, hyperspectral image projectors (HIP) have been developed in the field of remote sensing. For the advanced performance of system-level validation, target detection and hyperspectral image calibration, HIP has great possibility of development in military, medicine, commercial and so on. HIP is based on the digital micro-mirror device (DMD) and projection technology, which is capable to project arbitrary programmable spectra (controlled by PC) into the each pixel of the IUT1 (instrument under test), such that the projected image could simulate realistic scenes that hyperspectral image could be measured during its use and enable system-level performance testing and validation. In this paper, we built a visible hyperspectral image projector also called the visible target simulator with double DMDs, which the first DMD is used to product the selected monochromatic light from the wavelength of 410 to 720 um, and the light come to the other one. Then we use computer to load image of realistic scenes to the second DMD, so that the target condition and background could be project by the second DMD with the selected monochromatic light. The target condition can be simulated and the experiment could be controlled and repeated in the lab, making the detector instrument could be tested in the lab. For the moment, we make the focus on the spectral engine design include the optical system, research of DMD programmable spectrum and the spectral resolution of the selected spectrum. The detail is shown.

  16. Library leadership: Innovative options for designing training programmes to build leadership competencies in the digital age

    Directory of Open Access Journals (Sweden)

    Ann-Louise de Boer

    2013-03-01

    Full Text Available Library leaders may not be fully equipped to deal with the demands and rigours of the digital age and its consumers. Theadvent of the internet, search engines and social media require a paradigm shift in the development of these leaders.Whilst much has been written about the required competencies, there seems to be no clear guiding principle on how thedevelopment should take place. The authors propose that the development of library leaders is a process, best illustratedthrough movement through Drotter’s Leadership Pipeline. The importance of thinking preferences, based on Herrmann’sWhole Brain Model, is highlighted and it is shown how these often clog development through this Pipeline. Utilising datafrom the Herrmann Brain Dominance Instrument (HBDI assessments of the 120 participants in six of the Centre forAfrican Library Leadership (CALL development programmes, the authors show how the thinking preferences of theselibrary leaders could enable or detract from their readiness to develop the appropriate competencies in the digital age.Recommendations are made on how best to overcome this to prepare library leaders to deal with the requirements of thedigital age consumer.

  17. Implementation of a high resolution (< 11 ps RMS) Time-to-Digital Converter in a Field Programmable Gate Array

    Energy Technology Data Exchange (ETDEWEB)

    Ugur, Cahit [Helmholtz-Institut Mainz, Johannes Gutenberg-Universitaet Mainz (Germany); Bayer, Eugen [Department for Digital Electronics, University Kassel (Germany); Kurz, Nikolaus; Traxler, Michael [GSI Helmholtz Centre for Heavy Ion Research, Darmstadt (Germany); Michel, Jan [Institute for Nuclear Physics, Goethe University Frankfurt, Frankfurt am Main (Germany)

    2012-07-01

    A high resolution time-to-digital converter (TDC) was implemented in a general purpose field-programmable gate array (FPGA), a re-programmable digital chip. RMS and the time resolution of different channels are calculated for one clock cycle (5 ns) interval and a minimum of 10.3 ps RMS on two channels is achieved, which yields to a time resolution of 7.3 ps (10.3 ps/{radical}(2)) on a single channel. The TDC can be used in time-of-flight, time-over-threshold, drift time measurement applications as well as many other measurements with specific Front-End Electronics (FEE), e.g. charge measurements with charge-to-width (Q2W) FEE. The re-programmable flexibility of FPGAs also allows to have application specific features, e.g. trigger window, zero dead time etc.

  18. Mueller matrix microscope with a dual continuous rotating compensator setup and digital demodulation.

    Science.gov (United States)

    Arteaga, Oriol; Baldrís, Marta; Antó, Joan; Canillas, Adolf; Pascual, Esther; Bertran, Enric

    2014-04-01

    In this paper we describe a new Mueller matrix (MM) microscope that generalizes and makes quantitative the polarized light microscopy technique. In this instrument all the elements of the MU are simultaneously determined from the analysis in the frequency domain of the time-dependent intensity of the light beam at every pixel of the camera. The variations in intensity are created by the two compensators continuously rotating at different angular frequencies. A typical measurement is completed in a little over one minute and it can be applied to any visible wavelength. Some examples are presented to demonstrate the capabilities of the instrument.

  19. Blind I/Q imbalance compensation technique for direct-conversion digital radio transceivers

    CSIR Research Space (South Africa)

    De Witt, JJ

    2009-05-01

    Full Text Available in the compensated signal. It can adaptively be implemented and does not rely on block averaging, which enables imbalance tracking over time. An analysis is presented on the effect of noise, a frequency-selective channel, and a frequency offset between... and demodulator’s oscillators. Let the unwanted dc offset terms in the two signal paths be given by χI and χQ, and let a carrier leak-through component be given by ξ cos(ωct +∆ωt + θ + ρ). If the two matched low-pass filters are employed to remove the double...

  20. Online Discussion Compensates for Suboptimal Timing of Supportive Information Presentation in a Digitally Supported Learning Environment

    Science.gov (United States)

    Noroozi, Omid; Busstra, Maria C.; Mulder, Martin; Biemans, Harm J. A.; Tobi, Hilde; Geelen, Anouk; van't Veer, Pieter; Chizari, Mohammad

    2012-01-01

    This study used a sequential set-up to investigate the consecutive effects of timing of supportive information presentation (information before vs. information during the learning task clusters) in interactive digital learning materials (IDLMs) and type of collaboration (personal discussion vs. online discussion) in computer-supported…

  1. Digital Library for Access to Rare Materials. From pilot projects to national digitisation programmes

    Directory of Open Access Journals (Sweden)

    Adolf Knoll

    2003-09-01

    Full Text Available More than ten years ago, a first image digitisation product was published by the National Library of the Czech Republic in co-operation with an almost unknown small software company. It was a CD-ROM requested by UNESCO for its Memory of the World programme. After that there were many tests concerning digitisation devices and another two CD-ROM projects were completed to present two interesting manuscripts with rich description metadata related to all the structural levels of the book, including full text. In 1995 - 1996, our first digitisation centre was built to process manuscripts and old printed books. Later, it was upgraded several times with additional devices such as scanners, book cradles for careful document fixation, sophisticated camera stands, microclimate control units, etc. Simultaneously, many software tools were developed to assist the digitisation production. The co-operation with the company became crucial for further development of this activity and both the library and the company grew thanks to each other. In 1999, another project started to output digital data: it was based on the idea of safeguarding acid-paper library materials through preservation microfilming combined with digitisation of microfilm for access purposes. In order to be able to store large amounts of image data produced by this second programme, a mass storage facility was plugged into the digitisation production line. It was based on robotic library using magnetic tapes as storage medium. Successively, the digitisation programmes began to be used also by other Czech institutions holding rare collections of documents: other libraries, museums, archives, and even castle libraries and church institutions. Today, from all the digitised documents almost half of them are from other institutions than the National Library. This is an important success that has taken place thanks to support of the Ministry of Culture through specific grant programmes. Interested

  2. No-fault compensation following adverse events attributed to vaccination: a review of international programmes/Indemnisation sans egard a la faute consecutive a des evenements negatifs lies a la vaccination: evaluation des programmes internationaux/Compensacion sin admision de responsabilidad tras las reacciones adversas atribuidas a la vacunacion: revision

    National Research Council Canada - National Science Library

    Looker, Clare; Kelly, Heath

    2011-01-01

    Programmes that provide no-fault compensation for an adverse event following vaccination have been implemented in 19 countries worldwide, the first in Germany in 1961 and the most recent in Hungary in 2005...

  3. Active power filter for harmonic compensation using a digital dual-mode-structure repetitive control approach

    DEFF Research Database (Denmark)

    Zou, Zhixiang; Wang, Zheng; Cheng, Ming

    2012-01-01

    This paper presents an digital dual-mode-structure repetitive control approach for the single-phase shunt active power filter (APF), which aims to enhance the tracking ability and eliminate arbitrary order harmonic. The proposed repetitive control scheme blends the characteristics of both odd......-harmonic repetitive control and even-harmonic repetitive control. Moreover, the convergence rate is faster than conventional repetitive controller. Additionally, the parameters have been designed and optimized for the dual-mode structure repetitive control to improve the performance of APF system. Experimental...... results on a laboratory setup are given to verify the proposed control scheme....

  4. Development of a pulse programmer for magnetic resonance imaging using a personal computer and a high-speed digital input–output board

    OpenAIRE

    Hashimoto, Seitaro; Kose, Katsumi; Haishi, Tomoyuki

    2012-01-01

    We have developed a pulse programmer for magnetic resonance imaging (MRI) using a personal computer and a commercially available high-speed digital input–output board. The software for the pulse programmer was developed using C/C++ and .NET Framework 2.0 running under the Windows 7 operating system. The pulse programmer was connected to a digital MRI transceiver using a 32-bit parallel interface, and 128-bit data (16 bits × 8 words) for the pulse sequence and the digitally detected MRI signal...

  5. An FPGA-Integrated Time-to-Digital Converter Based on a Ring Oscillator for Programmable Delay Line Resolution Measurement

    Directory of Open Access Journals (Sweden)

    Chao Chen

    2014-01-01

    Full Text Available We describe the architecture of a time-to-digital converter (TDC, specially intended to measure the delay resolution of a programmable delay line (PDL. The configuration, which consists of a ring oscillator, a frequency divider (FD, and a period measurement circuit (PMC, is implemented in a field programmable gate array (FPGA device. The ring oscillator realized in loop containing a PDL and a look-up table (LUT generates periodic oscillatory pulses. The FD amplifies the oscillatory period from nanosecond range to microsecond range. The time-to-digital conversion is based on counting the number of clock cycles between two consecutive pulses of the FD by the PMC. Experiments have been conducted to verify the performance of the TDC. The achieved relative errors for four PDLs are within 0.50%–1.21% and the TDC has an equivalent resolution of about 0.4 ps.

  6. A digital instantaneous frequency measurement technique utilising high speed analogue to digital converters and field programmable gate arrays

    CSIR Research Space (South Africa)

    Herselman, PLR

    2007-09-01

    Full Text Available In modern information and sensor systems, the timely estimation of the carrier frequency of received signals is of critical importance. This paper presents a digital instantaneous frequency measurement (DIFM) technique, which can measure the carrier...

  7. Growing in Digital Maturity: Students and Their Computers in an Academic Laptop Programme in Singapore

    Science.gov (United States)

    Towndrow, Phillip; Fareed, Wan

    2015-01-01

    Using data collected through two focus group interviews with 14- to 16-year-olds involved in a one-to-one laptop academic programme in a Singapore secondary school, this paper shows some student disengagement and dissatisfaction in class, and this poses questions about the relevance of the school's laptop programme. Our findings illustrate low…

  8. Development of a pulse programmer for magnetic resonance imaging using a personal computer and a high-speed digital input-output board.

    Science.gov (United States)

    Hashimoto, Seitaro; Kose, Katsumi; Haishi, Tomoyuki

    2012-05-01

    We have developed a pulse programmer for magnetic resonance imaging (MRI) using a personal computer and a commercially available high-speed digital input-output board. The software for the pulse programmer was developed using C∕C++ and .NET Framework 2.0 running under the Windows 7 operating system. The pulse programmer was connected to a digital MRI transceiver using a 32-bit parallel interface, and 128-bit data (16 bits × 8 words) for the pulse sequence and the digitally detected MRI signal were transferred bi-directionally every 1 μs. The performance of the pulse programmer was evaluated using a 1.0 T permanent magnet MRI system. The acquired MR images demonstrated the usefulness of the pulse programmer. Although our pulse programmer was developed for a specially designed digital MRI transceiver, our approach can be used for any MRI system if the interface for the transceiver is properly designed. Therefore, we have concluded that our approach is promising for MRI pulse programmers.

  9. A digital signal processor-based pulse programmer with performance of run-time information handling for magnetic resonance imaging

    Science.gov (United States)

    Xiao, Liang; Li, Lin; Nie, Wei; Xie, Xiaoming; Wan, Hongjie

    2015-06-01

    A pulse programmer for magnetic resonance imaging based on a digital signal processor (DSP) is described. The pulse programmer not only implements event triggering and control line generation, but also performs the run-time information handling. The DSP, which has features that include a 32-bit data bus, a 24-bit address bus and a clock rate of 60 MHz, is used as the sequence operator. The DSP connects the field programmable gate array (FPGA) devices of all the spectrometer modules via its external bus, and manipulates the operation of each module via setting the control port of the corresponding FPGA. In addition, the run-time information of the spectrometer, which includes the operation status of each module and the external triggers, can be obtained easily using the read instruction, and the operation exceptions of the spectrometer can be treated quickly via the DSP’s interrupt mechanism. Up to 32 control lines can be generated simultaneously in an event, and the minimum interval between successive events is 50 ns. The pulse sequence program is written in the C++ language and is mainly composed of several predefined procedures. The performance of the proposed pulse programmer is validated by multiple imaging experiments.

  10. A flexible 32-channel time-to-digital converter implemented in a Xilinx Zynq-7000 field programmable gate array

    Energy Technology Data Exchange (ETDEWEB)

    Wang, Yonggang, E-mail: wangyg@ustc.edu.cn; Kuang, Jie; Liu, Chong; Cao, Qiang; Li, Deng

    2017-03-01

    A high performance multi-channel time-to-digital converter (TDC) is implemented in a Xilinx Zynq-7000 field programmable gate array (FPGA). It can be flexibly configured as either 32 TDC channels with 9.9 ps time-interval RMS precision, 16 TDC channels with 6.9 ps RMS precision, or 8 TDC channels with 5.8 ps RMS precision. All TDCs have a 380 M Samples/second measurement throughput and a 2.63 ns measurement dead time. The performance consistency and temperature dependence of TDC channels are also evaluated. Because Zynq-7000 FPGA family integrates a feature-rich dual-core ARM based processing system and 28 nm Xilinx programmable logic in a single device, the realization of high performance TDCs on it will make the platform more widely used in time-measuring related applications.

  11. Using a NPWE model observer to assess suitable image quality for a digital mammography quality assurance programme.

    Science.gov (United States)

    Monnin, P; Bochud, F O; Verdun, F R

    2010-01-01

    A method of objectively determining imaging performance for a mammography quality assurance programme for digital systems was developed. The method is based on the assessment of the visibility of a spherical microcalcification of 0.2 mm using a quasi-ideal observer model. It requires the assessment of the spatial resolution (modulation transfer function) and the noise power spectra of the systems. The contrast is measured using a 0.2-mm thick Al sheet and Polymethylmethacrylate (PMMA) blocks. The minimal image quality was defined as that giving a target contrast-to-noise ratio (CNR) of 5.4. Several evaluations of this objective method for evaluating image quality in mammography quality assurance programmes have been considered on computed radiography (CR) and digital radiography (DR) mammography systems. The measurement gives a threshold CNR necessary to reach the minimum standard image quality required with regards to the visibility of a 0.2-mm microcalcification. This method may replace the CDMAM image evaluation and simplify the threshold contrast visibility test used in mammography quality.

  12. An optical method for compensating phase discontinuity in a 360-degree viewable tabletop digital holographic display system

    Science.gov (United States)

    Lim, Yongjun; Hong, Keehoon; Kim, Hayan; Choo, Hyon-gon; Park, Minsik; Kim, Jinwoong

    2017-06-01

    In this paper, we use an optical method for the implementation of spatially-tiled digital micro-mirror devices (DMDs) to expand space bandwidth product in general digital holographic display systems. In concatenating more than two spatial light modulators (SLMs) optically, there may exist both phase discontinuity and amplitude mismatching of hologram images emanating from two adjacent SLMs. To observe and estimate those properties in digital holographic display systems, we adopt quantitative phase imaging technique based on transport of intensity equation.

  13. Apparatus and Method for Compensating for Process, Voltage, and Temperature Variation of the Time Delay of a Digital Delay Line

    Science.gov (United States)

    Seefeldt, James (Inventor); Feng, Xiaoxin (Inventor); Roper, Weston (Inventor)

    2013-01-01

    A process, voltage, and temperature (PVT) compensation circuit and a method of continuously generating a delay measure are provided. The compensation circuit includes two delay lines, each delay line providing a delay output. The two delay lines may each include a number of delay elements, which in turn may include one or more current-starved inverters. The number of delay lines may differ between the two delay lines. The delay outputs are provided to a combining circuit that determines an offset pulse based on the two delay outputs and then averages the voltage of the offset pulse to determine a delay measure. The delay measure may be one or more currents or voltages indicating an amount of PVT compensation to apply to input or output signals of an application circuit, such as a memory-bus driver, dynamic random access memory (DRAM), a synchronous DRAM, a processor or other clocked circuit.

  14. Evaluation of the AccessIT Project and the Distance LearningProgramme on Digitization

    Directory of Open Access Journals (Sweden)

    Bülent Yılmaz

    2013-11-01

    Full Text Available AccessIT is an EU-funded project under EU’s Education and Culture Program aiming to digitize a certain amount of sources that are part of the cultural heritage, to transfer them to Europeana, and to sustain the education infrastructure to achieve this goal in the partner countries of Greece, Poland, Serbia, Turkey and UK. In this study, in addition to the general evaluation of the AccessIT Project, it is aimed to investigate the awareness of participants in thefield on digitization and digital content management, their self-efficiency perceptions, and to evaluate the education program based on the data acquired from the survey of544participants who were enrolled in the distance education program offered within the scope of the project.It was found out in the study that the AccessIT Project has had an important function in Turkey and the distance education program significantly contributed to participants ’ self-efficiency perceptions about digitization.

  15. Experimental demonstration of adaptive digital monitoring and compensation of chromatic dispersion for coherent DP-QPSK receiver

    DEFF Research Database (Denmark)

    Borkowski, Robert; Zhang, Xu; Zibar, Darko

    2011-01-01

    We experimentally demonstrate a digital signal processing (DSP)-based optical performance monitoring (OPM) algorithm for inservice monitoring of chromatic dispersion (CD) in coherent transport networks. Dispersion accumulated in 40 Gbit/s QPSK signal after 80 km of fiber transmission...... drives an adaptive digital CD equalizer. © 2011 Optical Society of America....

  16. All-optical and digital non-linear compensation algorithms in flex-coherent grouped and un-grouped contiguous spectrum based networks

    DEFF Research Database (Denmark)

    Asif, Rameez

    2016-01-01

    We have evaluated that in-line non-linear compensation schemes decrease the complexity of digital backward propagation and enhance the transmission performance of 40/112/224 Gbit/s mixed line rate network. Multiple bit rates, i.e. 40/112/224 Gbit/s and modulation formats (i.e. DP-QPSK and DP-16QAM......) are transmitted over 1280 km of Large $$\\hbox {A}_{eff}$$ A e f f Pure-Silica core fiber. Both grouped and un-grouped spectral allocation schemes are investigated. Optical add-drop multiplexers are used to drop the required wavelength for signal processing in the transmission link. Moreover, hybrid mid-link...... spectral inversion and in-line non-linear compensation methods are also analyzed. This gives us enhanced system performance and DBP step-size of 400 km in WDM 224 Gbit/s DP-16QAM system, significantly reducing the complexity of digital backward propagation....

  17. An All-Digital Fast Tracking Switching Converter with a Programmable Order Loop Controller for Envelope Tracking RF Power Amplifiers.

    Science.gov (United States)

    Anabtawi, Nijad; Ferzli, Rony; Harmanani, Haidar M

    2016-05-01

    This paper presents a step down, switched mode power converter for use in multi-standard envelope tracking radio frequency power amplifiers (RFPA). The converter is based on a programmable order sigma delta modulator that can be configured to operate with either 1 st , 2 nd , 3 rd or 4 th order loop filters, eliminating the need for a bulky passive output filter. Output ripple, sideband noise and spectral emission requirements of different wireless standards can be met by configuring the modulator's filter order and converter's sampling frequency. The proposed converter is entirely digital and is implemented in 14nm bulk CMOS process for post layout verification. For an input voltage of 3.3V, the converter's output can be regulated to any voltage level from 0.5V to 2.5V, at a nominal switching frequency of 150MHz. It achieves a maximum efficiency of 94% at 1.5 W output power.

  18. Note: A high-frequency signal generator based on direct digital synthesizer and field-programmable gate array

    Science.gov (United States)

    Du, Yuanbo; Li, Wenbing; Ge, Yapeng; Li, Hui; Deng, Ke; Lu, Zehuang

    2017-09-01

    A high-frequency signal generator based on direct digital synthesizer (DDS) and field-programmable gate array (FPGA) is presented. The FPGA provides the controlling time sequence for the DDS, which has a highest output frequency of 1.4 GHz and a frequency resolution of 190 pHz. At an output frequency of 1.2 GHz, the measured phase noise, including the contribution of the reference clock, is -65 dBc/Hz@1 Hz, while the intrinsic phase noise is -82 dBc/Hz@1 Hz. Time delay of the DDS is measured to be less than 150 ns. The signal generator is used to drive an acousto-optic modulator, and the rise time due to the whole link is 24 ns. The developed signal generator can be used in many precision measurement experiments in the fields of atomic, molecular, and optical physics.

  19. A 7μW Offset-and Temperature-Compensated pH-to-Digital Converter

    NARCIS (Netherlands)

    Heidary Shalmany, S.; Merz, Matthias; Fekri, A.; Chang, Z.Y.; Hoofman, Romano J.O.M.; Pertijs, M.A.P.

    2017-01-01

    This paper demonstrates a micropower offset- and temperature-compensated smart pH sensor, intended for use in battery-powered RFID systems that monitor the quality of perishable products. Low operation power is essential in such systems to enable autonomous logging of environmental parameters, such

  20. The design, simulation, and fabrication of a BiCMOS VLSI digitally programmable GIC filter

    OpenAIRE

    Milne, Paul R.

    2001-01-01

    This thesis used a previously-designed programmable GIC filter as a basis in which to incorporate a BiCMOS operational amplifier. An NPN bipolar transistor layout was designed and incorporated into an opamp layout, which was a modified version of a CMOS-only design. The BiCMOS opamp was simulated using Silvaco SmartSpice and showed considerable improvement over its CMOS equivalent. Additional improvements were made to the GIC filter to include a passgate with reduced resistance, and a correct...

  1. A simple digital control system with field-programmable gate array for stabilization of CO2 laser output

    Science.gov (United States)

    Huang, Renshuai; Guo, Xiaoyang; Meng, Qinglong; Zhang, Bin

    2017-04-01

    A simple digital control system was designed to stabilize CO2 laser based on digital signal processing with the Field-Programmable Gate Array (FPGA) controlling chip and Very-High-Speed Integrated Circuit Hardware Description Language program. In this system, the control parameters were easily determined by software real-time control, and the control circuit was also designed compactly. In addition, the theoretical analysis on the stabilization of CO2 laser output characteristics was presented based on the photoacoustic effect, and the corresponding experiments on the stabilization of CO2 laser output characteristics were further performed. The results show that the output power of CO2 laser is stabilized at the peak with a relative power stability of 2.71%. Furthermore, the frequency of CO2 laser 9P(36) line is stabilized at the center of the laser gain curve with a relative stability of (1.57 ± 0.37)×10-8. This system has a potential of further improvements by optimizing the algorithm and choosing higher-speed signal processor.

  2. High speed, multi-channel, user programmable digital data acquisition system.

    Energy Technology Data Exchange (ETDEWEB)

    Sabourov, Konstantin [XIA LLC; Hennig, Wolfgang [XIA LLC; Walby, Mark [XIA LLC

    2013-11-18

    As applications for radiation detection become more demanding, and in turn improvements are made in the technology of radiation detection, there is a need for high speed digital detector readout electronics matching these improvements. Specifically, full control over the on-line processing resources of modern digital electronics is desirable so that researchers can develop custom algorithms for special applications.In the proposed effort, the 500 MHz digital readout electronics previously developed by our company will be redesigned to allow user access to the on-line processing resources. In Phase I, the division of online processing into vendor and user firmware sections has been studied on existing hardware. In Phase II, the hardware will be upgraded to better facilitate the division, and the firmware will be restructured into a robust vendor logic block (providing standard functions such as host I/O, on-board memory I/O, energy computation, MCA spectra, timestamps, waveform capture, run statistics, and triggering and timing) and a user logic block for custom algorithms (with templates and examples for frequently used functions). Investigating several options to divide online processing, it was determined that the most promising approach is to “partition” a single FPGA integrated circuit into a vendor and user section, which is supported in newer devices. The analog front end of the existing electronics proved suitable for most applications, in particular high rate measurements with germanium detectors. The design architecture for new electronics was developed, combining one of the new FPGA device with the analog front end.

  3. Development of Digital Hysteresis Current Control with PLL Loop Gain Compensation Strategy for PWM Inverters with Constant Switching Frequency

    Directory of Open Access Journals (Sweden)

    D. Masand

    2008-03-01

    Full Text Available Reactive power compensation is an important aspect in the control of distribution systems. Reactive current in addition to increasing the distribution system losses, introduces various power quality problems like, harmonics, voltage sag, swell and poor load power factor. These power quality issues result in the malfunction of sensitive equipments. A Distribution Static Compensator (DSTATCOM proves to be a viable solution for the mitigation of power quality problems. It provides effective compensation to linear varying/nonlinear loads by injecting appropriate reactive power at the point of common coupling (PCC. It exhibits the behavior of an active power filter and that of a voltage regulator. The choice of proper current control strategy is an important aspect in DSTATCOM performance. This paper compares linear and nonlinear methods of current regulation pertaining to DSTATCOM performance operating under Synchronous Reference Frame (SRF. The paper briefly describes the salient features of each regulation method with its merits and demerits. A dynamic model of a DSTATCOM has been developed using the two control techniques in MATLAB/SimPowerSystems environment to observe their performances and comparison.

  4. Light-enabled digital microfluidics: A technology leading to a programmable lab on a chip

    Science.gov (United States)

    Wereley, Steven T.; Chuang, Han-Sheng; Kumar, Aloke

    2009-11-01

    We present a self-driven microfluidic device for droplet manipulations based on an open optoelectrowetting (O-OEW) technique. The proposed O-OEW features dynamic droplet maneuverability and great extensibility due to light-induced virtual electrodes and an open configuration. The device comprises coplanar interdigitated electrodes, a photoconductor, and an insulator on a single substrate. The mechanism behind the O-OEW is dependent on the impedance switching between the photoconductor and the insulator. The photoconductor works as a gate for the equivalent circuit. Under illumination the impedance of the photoconductor decreases, prompting an electrowetting effect due to a high voltage drop in the insulator. Without illumination the impedance of the photoconductor increases, shifting the voltage drop back to the photoconductor layer and shutting off the electrowetting. The illumination induces a localized hydrophilic region on an overall hydrophobic surface, causing an imbalance of surface tension forces and the subsequent liquid droplet movement. By selectively illuminating the platform surface, basic droplet operations are implemented, such as translation, merging, and simultaneous multi-droplet control. Immersing the liquid droplets in oil enhances the movements and prevents serious evaporation. For more high-end applications, an addressable light source, such as a DLP projector, can be employed. The integration will enable the realization of a programmable lab on a chip.

  5. Digital switching in a biosensor circuit via programmable timing of gene availability.

    Science.gov (United States)

    Lapique, Nicolas; Benenson, Yaakov

    2014-12-01

    Transient delivery of gene circuits is required in many potential applications of synthetic biology, yet the pre-steady-state processes that dominate this delivery route pose major challenges for robust circuit deployment. Here we show that site-specific recombinases can rectify undesired effects by programmable timing of gene availability in multigene circuits. We exemplify the concept with a proportional sensor for endogenous microRNA (miRNA) and show a marked reduction in its ground state leakage due to desynchronization of the circuit's repressor components and their repression target. The new sensors display a dynamic range of up to 1,000-fold compared to 20-fold in the standard configuration. We applied the approach to classify cell types on the basis of miRNA expression profile and measured >200-fold output differential between positively and negatively identified cells. We also showed major improvements in specificity with cytotoxic output. Our study opens new venues in gene circuit design via judicious temporal control of circuits' genetic makeup.

  6. Compensation algorithm for the phase-shift error of polarization-based parallel two-step phase-shifting digital holography.

    Science.gov (United States)

    Tahara, Tatsuki; Ito, Kenichi; Kakue, Takashi; Fujii, Motofumi; Shimozato, Yuki; Awatsuji, Yasuhiro; Nishio, Kenzo; Ura, Shogo; Kubota, Toshihiro; Matoba, Osamu

    2011-03-01

    We propose an algorithm for compensating the phase-shift error of polarization-based parallel two-step phase-shifting digital holography, which is a technique for recording a spatial two-step phase-shifted hologram. Although a polarization-based system of the technique has been experimentally demonstrated, there had been the problem that the phase difference of two phase-shifted holograms had been changed by the extinction ratio of the micropolarizer array attached to the image sensor used in the system. To improve the performance of the system, we established and formulated an algorithm for compensating the phase-shift error. Accurate spatial phase-shifting interferometry in the system can be conducted by the algorithm regardless of phase-shift error due to the extinction ratio. By the numerical simulation, the proposed algorithm was capable of reducing the root mean square errors of the reconstructed image by 1/4 and 1/5 in amplitude and phase, respectively. Also, the algorithm was experimentally demonstrated, and the experimental results showed that the system employing the proposed algorithm suppressed the conjugate image, which slightly appeared in the image reconstructed by the system not employing the algorithm, even when the extinction ratio was 10:1. Thus, the effectiveness of the proposed algorithm was numerically and experimentally verified. © 2010 Optical Society of America

  7. The TOMMY trial: a comparison of TOMosynthesis with digital MammographY in the UK NHS Breast Screening Programme--a multicentre retrospective reading study comparing the diagnostic performance of digital breast tomosynthesis and digital mammography with digital mammography alone.

    Science.gov (United States)

    Gilbert, Fiona J; Tucker, Lorraine; Gillan, Maureen Gc; Willsher, Paula; Cooke, Julie; Duncan, Karen A; Michell, Michael J; Dobson, Hilary M; Lim, Yit Yoong; Purushothaman, Hema; Strudley, Celia; Astley, Susan M; Morrish, Oliver; Young, Kenneth C; Duffy, Stephen W

    2015-01-01

    Digital breast tomosynthesis (DBT) is a three-dimensional mammography technique with the potential to improve accuracy by improving differentiation between malignant and non-malignant lesions. The objectives of the study were to compare the diagnostic accuracy of DBT in conjunction with two-dimensional (2D) mammography or synthetic 2D mammography, against standard 2D mammography and to determine if DBT improves the accuracy of detection of different types of lesions. Women (aged 47-73 years) recalled for further assessment after routine breast screening and women (aged 40-49 years) with moderate/high of risk of developing breast cancer attending annual mammography screening were recruited after giving written informed consent. All participants underwent a two-view 2D mammography of both breasts and two-view DBT imaging. Image-processing software generated a synthetic 2D mammogram from the DBT data sets. In an independent blinded retrospective study, readers reviewed (1) 2D or (2) 2D + DBT or (3) synthetic 2D + DBT images for each case without access to original screening mammograms or prior examinations. Sensitivities and specificities were calculated for each reading arm and by subgroup analyses. Data were available for 7060 subjects comprising 6020 (1158 cancers) assessment cases and 1040 (two cancers) family history screening cases. Overall sensitivity was 87% [95% confidence interval (CI) 85% to 89%] for 2D only, 89% (95% CI 87% to 91%) for 2D + DBT and 88% (95% CI 86% to 90%) for synthetic 2D + DBT. The difference in sensitivity between 2D and 2D + DBT was of borderline significance (p = 0.07) and for synthetic 2D + DBT there was no significant difference (p = 0.6). Specificity was 58% (95% CI 56% to 60%) for 2D, 69% (95% CI 67% to 71%) for 2D + DBT and 71% (95% CI 69% to 73%) for synthetic 2D + DBT. Specificity was significantly higher in both DBT reading arms for all subgroups of age, density and dominant radiological

  8. Programmable large area digital microfluidic array with integrated droplet sensing for bioassays.

    Science.gov (United States)

    Hadwen, B; Broder, G R; Morganti, D; Jacobs, A; Brown, C; Hector, J R; Kubota, Y; Morgan, H

    2012-09-21

    We describe a new device concept for digital microfluidics, based on an active matrix electrowetting on dielectric (AM-EWOD) device. A conventional EWOD device is limited by the number of electrical connections that can be made practically, which restricts the number and type of droplet operations. In an AM-EWOD, the patterned electrodes of a conventional EWOD device are replaced by a thin film transistor (TFT) array, as found in a liquid crystal display (LCD), facilitating independent control of each electrode. The arrays can have many thousand individually addressable electrodes, are fully reconfigurable and can be programmed to support multiple simultaneous operations. Each element is 210 μm × 210 μm in size and contains a circuit that measures the electrical impedance of the liquid above it. This is used to determine the presence and size of a droplet, a method that can improve assay reliability and accuracy. This sensor provides feedback, error detection and closed loop control of an assay sequence. We describe the design, fabrication and testing of a 64 × 64 format AM-EWOD device with impedance sensor functionality. A colorimetric assay is implemented on the device and used to measure glucose in human blood serum. Results are compared with the same assay performed on a microtitre plate.

  9. Rapid and sensitive detection of antibiotic resistance on a programmable digital microfluidic platform.

    Science.gov (United States)

    Kalsi, Sumit; Valiadi, Martha; Tsaloglou, Maria-Nefeli; Parry-Jones, Lesley; Jacobs, Adrian; Watson, Rob; Turner, Carrie; Amos, Robert; Hadwen, Ben; Buse, Jonathan; Brown, Chris; Sutton, Mark; Morgan, Hywel

    2015-07-21

    The widespread dissemination of CTX-M extended spectrum β-lactamases among Escherichia coli bacteria, both in nosocomial and community environments, is a challenge for diagnostic bacteriology laboratories. We describe a rapid and sensitive detection system for analysis of DNA containing the blaCTX-M-15 gene using isothermal DNA amplification by recombinase polymerase amplification (RPA) on a digital microfluidic platform; active matrix electrowetting-on-dielectric (AM-EWOD). The devices have 16,800 electrodes that can be independently controlled to perform multiple and simultaneous droplet operations. The device includes an in-built impedance sensor for real time droplet position and size detection, an on-chip thermistor for temperature sensing and an integrated heater for regulating the droplet temperature. Automatic dispensing of droplets (45 nL) from reservoir electrodes is demonstrated with a coefficient of variation (CV) in volume of approximately 2%. The RPA reaction is monitored in real-time using exonuclease fluorescent probes. Continuous mixing of droplets during DNA amplification significantly improves target DNA detection by at least 100 times compared to a benchtop assay, enabling the detection of target DNA over four-order-of-magnitude with a limit of detection of a single copy within ~15 minutes.

  10. Innovative Programmable Bio-Nano-Chip Digitizes Biology Using Sensors That Learn Bridging Biomarker Discovery and Clinical Implementation

    Directory of Open Access Journals (Sweden)

    Nicolaos J. Christodoulides

    2017-05-01

    Full Text Available The lack of standard tools and methodologies and the absence of a streamlined multimarker approval process have hindered the translation rate of new biomarkers into clinical practice for a variety of diseases afflicting humankind. Advanced novel technologies with superior analytical performance and reduced reagent costs, like the programmable bio-nano-chip system featured in this article, have potential to change the delivery of healthcare. This universal platform system has the capacity to digitize biology, resulting in a sensor modality with a capacity to learn. With well-planned device design, development, and distribution plans, there is an opportunity to translate benchtop discoveries in the genomics, proteomics, metabolomics, and glycomics fields by transforming the information content of key biomarkers into actionable signatures that can empower physicians and patients for a better management of healthcare. While the process is complicated and will take some time, showcased here are three application areas for this flexible platform that combines biomarker content with minimally invasive or non-invasive sampling, such as brush biopsy for oral cancer risk assessment; serum, plasma, and small volumes of blood for the assessment of cardiac risk and wellness; and oral fluid sampling for drugs of abuse testing at the point of need.

  11. A counting-weighted calibration method for a field-programmable-gate-array-based time-to-digital converter

    Science.gov (United States)

    Chen, Yuan-Ho

    2017-05-01

    In this work, we propose a counting-weighted calibration method for field-programmable-gate-array (FPGA)-based time-to-digital converter (TDC) to provide non-linearity calibration for use in positron emission tomography (PET) scanners. To deal with the non-linearity in FPGA, we developed a counting-weighted delay line (CWD) to count the delay time of the delay cells in the TDC in order to reduce the differential non-linearity (DNL) values based on code density counts. The performance of the proposed CWD-TDC with regard to linearity far exceeds that of TDC with a traditional tapped delay line (TDL) architecture, without the need for nonlinearity calibration. When implemented in a Xilinx Vertix-5 FPGA device, the proposed CWD-TDC achieved time resolution of 60 ps with integral non-linearity (INL) and DNL of [-0.54, 0.24] and [-0.66, 0.65] least-significant-bit (LSB), respectively. This is a clear indication of the suitability of the proposed FPGA-based CWD-TDC for use in PET scanners.

  12. Transforming 'Female' Programmes: Don’t Tell the Bride from International TV to Italian Digital Channels for Women

    Directory of Open Access Journals (Sweden)

    Cecilia Penati

    2016-08-01

    Full Text Available Contemporary Italian digital channels explicitly targeting women (such as Real Time, Lei, Fox Life, La5, and La7d represent a privileged observatory for some general trends in the international circulation of content and incorporation of foreign formats into national television (TV. In fact, their schedules rely heavily on the genre of factual entertainment, which was first devised and used in international contexts, such as the UK and the US, and only in the second phase was imported into other national TV environments.After introducing this scenario and the main issues connected to the circulation of international content on these channels, the article will focus on the BBC docu-reality Don’t Tell the Bride. The show was extensively circulated (UK and US versions in the circuit of Italian women channels before a national version was produced by the pay-TV brand Lei. The article will reflect on how the national version Non ditelo alla sposa added further shades to the original meaning of the format. While the international version only allowed the Italian audience to engage with the programme through a romantic and escapist approach, the local adaptation inserted practical advice in the storytelling on how to arrange a low budget yet traditional wedding day, coupled with the sarcastic and ironic points of view of the characters involved.

  13. A counting-weighted calibration method for a field-programmable-gate-array-based time-to-digital converter

    Energy Technology Data Exchange (ETDEWEB)

    Chen, Yuan-Ho, E-mail: chenyh@mail.cgu.edu.tw [Department of Electronic Engineering, Chang Gung University, Tao-Yuan 333, Taiwan (China); Department of Radiation Oncology, Chang Gung Memorial Hospital, Tao-Yuan 333, Taiwan (China); Center for Reliability Sciences and Technologies, Chang Gung University, Tao-Yuan 333, Taiwan (China)

    2017-05-11

    In this work, we propose a counting-weighted calibration method for field-programmable-gate-array (FPGA)-based time-to-digital converter (TDC) to provide non-linearity calibration for use in positron emission tomography (PET) scanners. To deal with the non-linearity in FPGA, we developed a counting-weighted delay line (CWD) to count the delay time of the delay cells in the TDC in order to reduce the differential non-linearity (DNL) values based on code density counts. The performance of the proposed CWD-TDC with regard to linearity far exceeds that of TDC with a traditional tapped delay line (TDL) architecture, without the need for nonlinearity calibration. When implemented in a Xilinx Vertix-5 FPGA device, the proposed CWD-TDC achieved time resolution of 60 ps with integral non-linearity (INL) and DNL of [−0.54, 0.24] and [−0.66, 0.65] least-significant-bit (LSB), respectively. This is a clear indication of the suitability of the proposed FPGA-based CWD-TDC for use in PET scanners.

  14. On-demand generation and mixing of liquid-in-gas slugs with digitally-programmable composition and size.

    Science.gov (United States)

    Chen, Yi-Chun; Liu, Kan; Shen, Clifton Kwang-Fu; van Dam, R Michael

    2015-08-01

    Microscopic droplets or slugs of mixed reagents provide a convenient platform for performing large numbers of isolated biochemical or chemical reactions for many screening and optimization applications. Myriad microfluidic approaches have emerged for creating droplets or slugs with controllable size and composition, generally using an immiscible carrier fluid to assist with the formation or merging processes. We report a novel device for generation of liquid slugs in air when the use of a carrier liquid is not compatible with the application. The slug generator contains two adjacent chambers, each of which has a volume that can be digitally adjusted by closing selected microvalves. Reagents are filled into the two chambers, merged together into a contiguous liquid slug, ejected at the desired time from the device using gas pressure, and mixed by flowing in a downstream channel. Programmable size and composition of slugs is achieved by dynamically adjusting the volume of each chamber prior to filling. Slug formation in this fashion is independent of fluid properties and can easily be scaled to mix larger numbers of reagents. This device has already been used to screen monomer ratios in supramolecular nanoparticle assembly and radiolabeling conditions of engineered antibodies, and here we provide a detailed description of the underlying device.

  15. Development of Digital Hysteresis Current Control with PLL Loop Gain Compensation Strategy for PWM Inverters with Constant Switching Frequency

    Directory of Open Access Journals (Sweden)

    N. Belhaouchet

    2008-03-01

    Full Text Available Hysteresis current control is one of the simplest techniques used to control the magnitude and phase angle of motor current for motor drives systems. However, this technique presents several disadvantages such as operation at variable switching frequency which can reveal problems of filtering, interference between the phases in the case of the three-phase systems with insulated neutral connection or delta connection, and irregularity of the modulation pulses which especially causes an acoustic noise on the level of the machine for the high power drive. In this paper, a new technique is proposed for a variable-hysteresis-band controller based on dead beat control applied to three phase voltage source PWM inverters feeding AC motors. Its main aim is firstly ensure a constant switching frequency and secondly the synchronization of modulation pulses using the phase-locked-loop with loop gain compensation in order to ensure a better stability. The behavior of the proposed technique is verified by simulation.

  16. Digital Implementation of Method for Discontinuous Current Mode Compensation Of High-Performance Line-Commutated Converters

    CERN Document Server

    Maestri, S; Uicich, G; Gomez Costa, J; Petrocelli, R; CERN. Geneva. TE Department

    2010-01-01

    Many high-performance power converters at CERN are implemented with thyristors, mostly in CCM (Continuous Conduction Mode) due to their better dynamic response. In DCM (Discontinuous Conduction Mode), the converter reduces its small-signal gain, producing a degraded time response which can lead to instability. Several of these converters use digital regulation, allowing the implementation of complex non- linear control techniques. Therefore, a strategy to control the converters in DCM (Discontinuous Conduction Mode) can be implemented, bearing in mind that their standard operation (sampling time, measured signals, acquisition system) can not be drastically changed. This report presents the implementation of a new method to control line-commutated converters in discontinuous conduction mode (DCM). The method is based on the modfication of the thyristor's ring angle _ using a linear approximation, yielding nearly the same dynamic performance as in continuous conduction mode. The _ring angle is corrected by addi...

  17. Recognising Victimhood: Lessons from the International Criminal Court and Mass Claim Programmes for the Compensation Procedure Parallel to the Trial of International Crimes in the Netherlands

    NARCIS (Netherlands)

    Janssen., P.; Kool, R.S.B.

    In the Netherlands, the Dutch criminal court in The Hague (hereinafter: ‘Netherlands International Crimes Court’ or ‘NIC court’) is assigned to try international crimes, and to provide compensation to victims of such crimes. Whereas it has specific criminal laws at its disposal to try international

  18. Digitization

    DEFF Research Database (Denmark)

    Finnemann, Niels Ole

    2014-01-01

    Processes of digitization have for years represented a major trend in the developments of modern society but have only recently been related to processes of mediatization. The purpose of this article is to look into the relation between the concepts of mediatization and digitization and to clarify...... what a concept of digital media might add to the understanding of processes of mediatization and what the concept of mediatization might add to the understanding of digital media. It is argued that digital media open an array of new trajectories in human communication, trajectories which were...... not anticipated in previous conceptualizations of media and mediatization. If digital media are to be included, the concept of mediatization has to be revised and new parameters are to be built into the concept of media. At the same time it is argued that the concept of mediatization still provides a variety...

  19. Fast contactless vibrating structure characterization using real time field programmable gate array-based digital signal processing: demonstrations with a passive wireless acoustic delay line probe and vision.

    Science.gov (United States)

    Goavec-Mérou, G; Chrétien, N; Friedt, J-M; Sandoz, P; Martin, G; Lenczner, M; Ballandras, S

    2014-01-01

    Vibrating mechanical structure characterization is demonstrated using contactless techniques best suited for mobile and rotating equipments. Fast measurement rates are achieved using Field Programmable Gate Array (FPGA) devices as real-time digital signal processors. Two kinds of algorithms are implemented on FPGA and experimentally validated in the case of the vibrating tuning fork. A first application concerns in-plane displacement detection by vision with sampling rates above 10 kHz, thus reaching frequency ranges above the audio range. A second demonstration concerns pulsed-RADAR cooperative target phase detection and is applied to radiofrequency acoustic transducers used as passive wireless strain gauges. In this case, the 250 ksamples/s refresh rate achieved is only limited by the acoustic sensor design but not by the detection bandwidth. These realizations illustrate the efficiency, interest, and potentialities of FPGA-based real-time digital signal processing for the contactless interrogation of passive embedded probes with high refresh rates.

  20. Aquarius Digital Processing Unit

    Science.gov (United States)

    Forgione, Joshua; Winkert, George; Dobson, Norman

    2009-01-01

    Three documents provide information on a digital processing unit (DPU) for the planned Aquarius mission, in which a radiometer aboard a spacecraft orbiting Earth is to measure radiometric temperatures from which data on sea-surface salinity are to be deduced. The DPU is the interface between the radiometer and an instrument-command-and-data system aboard the spacecraft. The DPU cycles the radiometer through a programmable sequence of states, collects and processes all radiometric data, and collects all housekeeping data pertaining to operation of the radiometer. The documents summarize the DPU design, with emphasis on innovative aspects that include mainly the following: a) In the radiometer and the DPU, conversion from analog voltages to digital data is effected by means of asynchronous voltage-to-frequency converters in combination with a frequency-measurement scheme implemented in field-programmable gate arrays (FPGAs). b) A scheme to compensate for aging and changes in the temperature of the DPU in order to provide an overall temperature-measurement accuracy within 0.01 K includes a high-precision, inexpensive DC temperature measurement scheme and a drift-compensation scheme that was used on the Cassini radar system. c) An interface among multiple FPGAs in the DPU guarantees setup and hold times.

  1. Tout cela est bien quelque chose: Digital Preservation Today: how European Commission programmes and policy have brought us here: Festschrift for Patricia (Pat Manson

    Directory of Open Access Journals (Sweden)

    Janet Delve

    2017-05-01

    Full Text Available Patricia (Pat Manson worked with the European Commission's (EC’s research programmes from the early 1990s, initially as project officer (December 1991-March 2003 and then as Head of Unit (April 2003-2011 for Cultural Heritage and Technology Enhanced Learning which was part of the Directorate General Information Society and Media. The unit focused primarily on research in digital libraries, digital preservation, and in the use of ICTs for improving learning, but was also involved in the development of the i2010 digital libraries policies and actions. Prior to joining the Commission, she worked in the UK providing a national advisory and market watch service to libraries on the use of new technologies. She is now Head of the Inclusion, Skills & Youth Unit of the EC’s Directorate General for Communication Networks, Content and Technology (DG CONNECT, where the unit’s goal is to ensure that citizens, especially youth and those at risk of exclusion, are best able to benefit from the Internet and have the necessary skills so to do. This article sets out Pat’s leadership of EC-funded Digital Preservation, and examines her legacy in terms of lasting best practices, contributions to standardisation activities etc.

  2. Digitally compensated beam current transformer

    CERN Document Server

    Kesselman, Martin

    2005-01-01

    The Spallation Neutron Source (SNS) is being built by a collaboration of six laboratories. Beam current monitors (BCMs) will be used to record the current of H-minus and H-plus beams ranging from 15 mA (tune-up in the Front End and Linac) to over 60A fully accumulated in the Ring and dumped to the load as a single pulse in the Ring to Beam Target (RTBT). The time structure of these beams ranges from 645ns "mini" bunches at the 1.05 MHz ring revolution rate, to an overall 1 ms long macro-pulse. The requirements for the BCMs will depend upon their location within the system. The need to measure individual mini-pulses, examine the characteristics of the chopper edge, as well as the longer average current pulse of the macropulse, or long duration pulses during Linac tuning place wide requirements upon the response of current transformers. To obtain the desired accuracy and resolution, current transformers must have less than 1 ns rise time and droops of 0.1 %/ms. This places a significant design burden on the cur...

  3. Digital Bridge or Digital Divide? A Case Study Review of the Implementation of the "Computers for Pupils Programme" in a Birmingham Secondary School

    Science.gov (United States)

    Morris, Jonathan Padraig

    2011-01-01

    Attempts to bridge the Digital Divide have seen vast investment in Information Communication Technology in schools. In the United Kingdom, the Computers for Pupils initiative has invested 60 million British Pounds of funds to help some of the most disadvantaged secondary school pupils by putting a computer in their home. This paper charts and…

  4. Losses compensation; Compensation des pertes

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    One mission of RTE (Electric Power Transportation), is to watch over the losses compensation resulting from the power transport on the electric power network. Since january 2001, RTE makes good the electric losses by the purchase of energy. To choose the marketers, a consultation has been realized by RTE. This document presents the rules concerning these losses compensation. (A.L.B.)

  5. Transforming 'Female' Programmes: Don’t Tell the Bride from International TV to Italian Digital Channels for Women

    NARCIS (Netherlands)

    Penati, Cecilia

    2016-01-01

    textabstractContemporary Italian digital channels explicitly targeting women (such as Real Time, Lei, Fox Life, La5, and La7d) represent a privileged observatory for some general trends in the international circulation of content and incorporation of foreign formats into national television (TV). In

  6. Implementation of sub-nanosecond time-to-digital convertor in field-programmable gate array: applications to time-of-flight analysis in muon radiography

    Science.gov (United States)

    Marteau, Jacques; de Bremond d'Ars, Jean; Gibert, Dominique; Jourde, Kevin; Gardien, Serge; Girerd, Claude; Ianigro, Jean-Christophe

    2014-03-01

    Time-of-flight (TOF) techniques are standard techniques in high energy physics to determine particles’ propagation directions. Since particle velocities are generally close to c, the speed of light, and detector typical dimensions at the metre level, the state-of-the-art TOF techniques should reach sub-nanosecond timing resolution. Among the various techniques already available, the recently developed ring oscillator time-to-digital converter (TDC) ones, implemented in low-cost programmable logic circuits like FPGA (field programmable gate array), feature a very interesting figure of merit since a very good timing performance may be achieved with limited processing resources. This issue is relevant for applications where unmanned sensors should have the lowest possible power consumption. Actually this paper describes in detail the application of this kind of TOF technique to muon tomography of geological bodies. Muon tomography aims at measuring density variations and absolute densities through the detection of atmospheric muon flux’s attenuation, due to the presence of matter. When the measured fluxes become very low, an identified source of noise comes from backwards propagating particles hitting the detector in a direction pointing to the geological body. The separation between through-going and backward-going particles on the basis of the TOF information is therefore a key parameter for the tomography analysis and subsequent forecasts. This paper describes a TDC implementation fulfilling the requirements of a TOF measurement applied to muon tomography.

  7. Employee Compensation.

    Science.gov (United States)

    Osif, Bonnie A.; Harwood, Richard L.

    1995-01-01

    Presents an overview of selected literature about employee compensation. Highlights include the foundations of reward and recognition systems, incentive plans, problems with merit pay, a historical perspective on performance pay, evaluation criteria and processes, self-rating, job motivation and satisfaction, employee attitudes, collective…

  8. Distortion compensator

    NARCIS (Netherlands)

    Sakamoto, K.; Nauta, Bram

    2013-01-01

    PROBLEM TO BE SOLVED: To improve distortion compensation accuracy of a power amplifier. :SOLUTION: An LMS algorithm using a feedback signal that is an output signal of a power amplifier 1 input via an attenuator 15 and pseudorandom data calculates a delay of an input signal to the power amplifier 1.

  9. Distortion Compensator

    NARCIS (Netherlands)

    Sakamoto, K.; Nauta, Bram

    2013-01-01

    PROBLEM TO BE SOLVED: To improve distortion compensation accuracy of a power amplifier. ;SOLUTION: An LMS algorithm using a feedback signal that is an output signal of a power amplifier 1 input via an attenuator 17 and pseudorandom data calculates a delay of an input signal to the power amplifier 1

  10. Distortion Compensator

    NARCIS (Netherlands)

    Sakamoto, K.; Nauta, Bram

    2013-01-01

    PROBLEM TO BE SOLVED: To improve the accuracy of distortion compensation of a power amplifier. SOLUTION: An LMS algorithm using a feedback signal that is an output signal of a power amplifier 1 input via an attenuator 17 and pseudorandom data calculates a delay of an input signal to the power

  11. Preventing diabetes blindness: cost effectiveness of a screening programme using digital non-mydriatic fundus photography for diabetic retinopathy in a primary health care setting in South Africa.

    Science.gov (United States)

    Khan, Taskeen; Bertram, Melanie Y; Jina, Ruxana; Mash, Bob; Levitt, Naomi; Hofman, Karen

    2013-08-01

    South Africa like many other developing countries is experiencing an epidemiologic transition with a marked increase in the non-communicable disease (NCD) burden. Diabetic retinopathy is the most common cause of incidental blindness in adults. A screening programme using a mobile fundal camera in a primary care setting has been shown to be effective in the country. Information on affordability and cost is essential for policymakers to consider its adoption. Economic evaluation is the comparative analysis of competing alternative interventions in terms of costs and consequences. A cost effectiveness analysis was done using actual costs from the primary care screening programme. A total of 14,541 patients were screened in three primary healthcare facilities in the Western Cape. Photographs were taken by a trained technician with supervision by an ophthalmic nurse. The photographs were then read by a medical officer with ophthalmic experience. A cost effective ratio of $1206 per blindness case averted was obtained. This included costs for screening and treating an individual. The cost just to screen a patient for retinopathy was $22. The costs of screening and treating all incident cases of blindness due to diabetes in South Africa would be 168,000,000 ZAR ($19,310,344) per annum. Non mydriatic digital fundoscopy is a cost effective measure in the screening and diagnosis of diabetic retinopathy in a primary care setting in South Africa. The major savings in the long term are a result of avoiding government disability grant for people who suffer loss of vision. Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.

  12. SDOCT imaging to identify macular pathology in patients diagnosed with diabetic maculopathy by a digital photographic retinal screening programme.

    Directory of Open Access Journals (Sweden)

    Sarah Mackenzie

    Full Text Available INTRODUCTION: Diabetic macular edema (DME is an important cause of vision loss. England has a national systematic photographic retinal screening programme to identify patients with diabetic eye disease. Grading retinal photographs according to this national protocol identifies surrogate markers for DME. We audited a care pathway using a spectral-domain optical coherence tomography (SDOCT clinic to identify macular pathology in this subset of patients. METHODS: A prospective audit was performed of patients referred from screening with mild to moderate non-proliferative diabetic retinopathy (R1 and surrogate markers for diabetic macular edema (M1 attending an SDOCT clinic. The SDOCT images were graded by an ophthalmologist as SDOCT positive, borderline or negative. SDOCT positive patients were referred to the medical retina clinic. SDOCT negative and borderline patients were further reviewed in the SDOCT clinic in 6 months. RESULTS: From a registered screening population of 17 551 patients with diabetes mellitus, 311 patients met the inclusion criteria between (March 2008 and September 2009. We analyzed images from 311 patients' SDOCT clinic episodes. There were 131 SDOCT negative and 12 borderline patients booked for revisit in the OCT clinic. Twenty-four were referred back to photographic screening for a variety of reasons. A total of 144 were referred to ophthalmology with OCT evidence of definite macular pathology requiring review by an ophthalmologist. DISCUSSION: This analysis shows that patients with diabetes, mild to moderate non-proliferative diabetic retinopathy (R1 and evidence of diabetic maculopathy on non-stereoscopic retinal photographs (M1 have a 42.1% chance of having no macular edema on SDOCT imaging as defined by standard OCT definitions of DME when graded by a retinal specialist. SDOCT imaging is a useful adjunct to colour fundus photography in screening for referable diabetic maculopathy in our screening population.

  13. A High-Speed Fully Digital Phase-Synchronizer Implemented in a Field Programmable Gate Array Device

    Directory of Open Access Journals (Sweden)

    Frankowski Robert

    2017-09-01

    Full Text Available Most systems used in quantum physics experiments require the efficient and simultaneous recording different multi-photon coincidence detection events. In such experiments, the single-photon gated counting systems can be applicable. The main sources of errors in these systems are both instability of the clock source and their imperfect synchronization with the excitation source. Below, we propose a solution for improvement of the metrological parameters of such measuring systems. Thus, we designed a novel integrated circuit dedicated to registration of signals from a photon number resolving detectors including a phase synchronizer module. This paper presents the architecture of a high-resolution (~60 ps digital phase synchronizer module cooperating with a multi-channel coincidence counter. The main characteristic feature of the presented system is its ability to fast synchronization (requiring only one clock period with the measuring process. Therefore, it is designed to work with various excitation sources of a very wide frequency range. Implementation of the phase synchronizer module in an FPGA device enabled to reduce the synchronization error value from 2.857 ns to 214.8 ps.

  14. Differences in radiological patterns, tumour characteristics and diagnostic precision between digital mammography and screen-film mammography in four breast cancer screening programmes in Spain

    Energy Technology Data Exchange (ETDEWEB)

    Domingo, Laia; Sala, Maria [IMIM-Hospital del Mar, Department of Epidemiology and Evaluation, Barcelona (Spain); CIBER de Epidemiologia y Salud Publica (CIBERESP), Barcelona (Spain); Universitat Autonoma de Barcelona (UAB), EHEA Doctoral Program in Public Health. Department of Pediatrics, Obstetrics and Gynecology, Preventive Medicine and Public Health, Barcelona (Spain); Romero, Anabel; Belvis, Francesc; Macia, Francesc; Castells, Xavier [IMIM-Hospital del Mar, Department of Epidemiology and Evaluation, Barcelona (Spain); CIBER de Epidemiologia y Salud Publica (CIBERESP), Barcelona (Spain); Sanchez, Mar [Government of Cantabria, General Directorate of Public Health, Department of Health, Santander (Spain); Ferrer, Joana [Radiology Unit. Hospital Santa Caterina, Girona (Spain); Salas, Dolores; Ibanez, Josefa [General Directorate Public Health and Centre for Public Health Research (CSISP), Valencia (Spain); Vega, Alfonso [Hospital Universitario Marques de Valdecilla, Radiology Unit, Santander (Spain); Ferrer, Francesc [Hospital del Mar, Radiology and Nuclear Medicine Service, Barcelona (Spain); Laso, M.S. [Breast Cancer Screening Unit Burjassot, Valencia (Spain)

    2011-09-15

    To compare tumour characteristics between cancers detected with screen-film mammography (SFM) and digital mammography (DM) and to evaluate changes in positive predictive values (PPVs) for further assessments, for invasive procedures and for distinct radiological patterns in recalled women. 242,838 screening mammograms (171,191 SFM and 71,647 DM) from 103,613 women aged 45-69 years, performed in four population-based breast cancer screening programmes in Spain, were included. The tumour characteristics and PPVs of each group were compared. Radiological patterns (masses, calcifications, distortions and asymmetries) among recalled women were described and PPVs were evaluated. The percentages of ductal carcinoma in situ (DCIS) were higher in DM than in SFM both in the first [18.5% vs. 15.8%(p = 0.580)] and in successive screenings [23.2% vs. 15.7%(p = 0.115)]. PPVs for masses, asymmetries and calcifications were higher in DM, being statistically significant in masses (5.3% vs. 3.9%; proportion ratio: 1.37 95%CI: 1.08-1.72). Among cancers detected by calcifications, the percentage of DCIS was higher in DM (60.3% vs. 46.4%, p = 0.060). PPVs were higher when DM was used, both for further assessments and for invasive procedures, with similar cancer detection rates and no statistically significant differences in tumour characteristics. The greatest improvements in PPVs were found for masses. (orig.)

  15. A 515 nW, 0-18 dB Programmable Gain Analog-to-Digital Converter for In-Channel Neural Recording Interfaces.

    Science.gov (United States)

    Rodriguez-Perez, Alberto; Delgado-Restituto, Manuel; Medeiro, Fernando

    2014-06-01

    This paper presents a low-area low-power Switched-Capacitor (SC)-based Programmable-Gain Analog-to-Digital Converter (PG-ADC) suitable for in-channel neural recording applications. The PG-ADC uses a novel implementation of the binary search algorithm that is complemented with adaptive biasing techniques for power saving. It has been fabricated in a standard CMOS 130 nm technology and only occupies 0.0326 mm(2). The PG-ADC has been optimized to operate under two different sampling modes, 27 kS/s and 90 kS/s. The former is tailored for raw data conversion of neural activity, whereas the latter is used for the on-the-fly feature extraction of neural spikes. Experimental results show that, under a voltage supply of 1.2 V, the PG-ADC obtains an ENOB of 7.56 bit (8-bit output) for both sampling modes, regardless of the gain setting. The amplification gain can be programmed from 0 to 18 dB. The power consumption of the PG-ADC at 90 kS/s is 1.52 μW with a FoM of 89.49 fJ/conv, whereas at 27 kS/s it consumes 515 nW and obtains a FoM of 98.31 fJ/conv .

  16. Full-field digital mammography compared to screen film mammography in the prevalent round of a population-based screening programme: the Vestfold County Study

    Energy Technology Data Exchange (ETDEWEB)

    Vigeland, Einar [Vestfold Hospital, Department of Radiology, Toensberg (Norway); Klaasen, Herman [Aberdeen Royal Infirmary, Department of Radiology, Aberdeen, Scotland (United Kingdom); Klingen, Tor A. [Vestfold Hospital, Department of Pathology, Toensberg (Norway); Hofvind, Solveig [The Cancer Registry of Norway, Oslo (Norway); Skaane, Per [Ullevaal University Hospital, Department of Radiology, Oslo (Norway)

    2008-01-15

    The purpose of the study was to compare the performance of full-field digital mammography (FFDM) with soft-copy reading to screen film mammography (SFM) used during the first prevalent 2-year round of population-based screening. A total of 18,239 women aged 50-69 years were screened with FFDM as part of the Norwegian Breast Cancer Screening Programme (NBCSP). Process indicators were compared to data from 324,763 women screened with SFM using the common national database of the NBCSP. The cancer detection rates were 0.77% (140/18,239) for FFDM and 0.65% (2,105/324,763) for SFM (p = 0.058). For ductal carcinoma in situ (DCIS) alone, the results were: FFDM 0.21% (38/18,239) compared to SFM 0.11% (343/324,763) (p < 0.001). Recall rates due to positive mammography were for FFDM 4.09% (746/18,239), while for SFM 4.16% (13,520/324,764) (p = 0.645), due to technically insufficient imaging: FFDM 0.22% (40/18,239) versus SFM 0.61% (1,993/324,763) (p < 0.001). The positive predictive value (PPV) in the FFDM group was 16.6% (140/843), while 13.5% (2,105/15,537) for SFM (p = 0.014). No statistically significant differences were recorded concerning histological morphology, tumour size, or lymph node involvement. In conclusion FFDM had a significantly higher detection rate for DCIS than SFM. For invasive cancers no difference was seen. FFDM also had a significantly higher PPV and a significantly lower technical recall rate. (orig.)

  17. Full-field digital mammography compared to screen film mammography in the prevalent round of a population-based screening programme: the Vestfold County Study.

    Science.gov (United States)

    Vigeland, Einar; Klaasen, Herman; Klingen, Tor Audun; Hofvind, Solveig; Skaane, Per

    2008-01-01

    The purpose of the study was to compare the performance of full-field digital mammography (FFDM) with soft-copy reading to screen film mammography (SFM) used during the first prevalent 2-year round of population-based screening. A total of 18,239 women aged 50-69 years were screened with FFDM as part of the Norwegian Breast Cancer Screening Programme (NBCSP). Process indicators were compared to data from 324,763 women screened with SFM using the common national database of the NBCSP. The cancer detection rates were 0.77% (140/18,239) for FFDM and 0.65% (2,105/324,763) for SFM (p = 0.058). For ductal carcinoma in situ (DCIS) alone, the results were: FFDM 0.21% (38/18,239) compared to SFM 0.11% (343/324,763) (p < 0.001). Recall rates due to positive mammography were for FFDM 4.09% (746/18,239), while for SFM 4.16% (13,520/324,764) (p = 0.645), due to technically insufficient imaging: FFDM 0.22% (40/18,239) versus SFM 0.61% (1,993/324,763) (p < 0.001). The positive predictive value (PPV) in the FFDM group was 16.6% (140/843), while 13.5% (2,105/15,537) for SFM (p = 0.014). No statistically significant differences were recorded concerning histological morphology, tumour size, or lymph node involvement. In conclusion FFDM had a significantly higher detection rate for DCIS than SFM. For invasive cancers no difference was seen. FFDM also had a significantly higher PPV and a significantly lower technical recall rate.

  18. Optical phase conjugation for nonlinearity compensation in WDM PDM 16-QAM transmission over dispersion-compensated and dispersion-uncompensated links

    DEFF Research Database (Denmark)

    Da Ros, Francesco; Sackey, I.; Jazayerifar, M.

    2015-01-01

    Kerr nonlinearity compensation by optical phase conjugation is demonstrated in a WDM PDM 16-QAM system. Improved received signal quality is reported for both dispersion-compensated and dispersion-uncompensated transmission and a comparison with digital backpropagation is provided.......Kerr nonlinearity compensation by optical phase conjugation is demonstrated in a WDM PDM 16-QAM system. Improved received signal quality is reported for both dispersion-compensated and dispersion-uncompensated transmission and a comparison with digital backpropagation is provided....

  19. DC-Compensated Current Transformer.

    Science.gov (United States)

    Ripka, Pavel; Draxler, Karel; Styblíková, Renata

    2016-01-20

    Instrument current transformers (CTs) measure AC currents. The DC component in the measured current can saturate the transformer and cause gross error. We use fluxgate detection and digital feedback compensation of the DC flux to suppress the overall error to 0.15%. This concept can be used not only for high-end CTs with a nanocrystalline core, but it also works for low-cost CTs with FeSi cores. The method described here allows simultaneous measurements of the DC current component.

  20. Online digital compensation method for AMR sensors

    NARCIS (Netherlands)

    Zambrano Constantini, A.C.; Kerkhoff, Hans G.

    Anisotropic Magnetoresistance (AMR) sensors are magnetic sensors often used for angle measurements. The sensor outputs should be two perfect sinusoidal signals that depend on the angle to be measured. However due to non-ideal properties of the sensor, the actual outputs include undesired parameters

  1. Options in Compensation

    DEFF Research Database (Denmark)

    Flor, Christian Riis; Frimor, Hans; Munk, Claus

    2014-01-01

    to motivate effort. If rewarding low outcomes is infeasible, compensation consisting of stocks and options is a near-efficient means of overcoming the manager's induced aversion to undertaking risky investments, whereas stock compensation is not. However, stock plus option compensation may induce excessively......We derive the optimal compensation contract in a principal–agent setting in which outcome is used to provide incentives for both effort and risky investments. To motivate investment, optimal compensation entails rewards for high as well as low outcomes, and it is increasing at the mean outcome...... risky investments, and capping pay can be important in curbing such behavior....

  2. arXiv A Programmable Delay Design for the sTGC Detector at the Upgraded New Small Wheel of the ATLAS Muon Spectrometer

    CERN Document Server

    INSPIRE-00225390; Guan, Liang; Chapman, John W; Zhou, Bing; Zhu, Junjie

    2017-11-01

    We present a programmable time alignment scheme used in an ASIC for the ATLAS forward muon trigger development. The scheme utilizes regenerated clocks with programmable phases to compensate for the timing offsets introduced by different detector trace lengths. Each ASIC used in the design has 104 input channels with delay compensation circuitry providing steps of ∼ 3 ns and a full range of 25 ns for each channel. Detailed implementation of the scheme including majority logic to suppress single-event effects is presented. The scheme is flexible and fully synthesizable. The approach is adaptable to other applications with similar phase shifting requirements. In addition, the design is resource efficient and is suitable for cost-effective digital implementation with a large number of channels.

  3. Blinded double reading yields a higher programme sensitivity than non-blinded double reading at digital screening mammography: a prospected population based study in the south of The Netherlands.

    Science.gov (United States)

    Klompenhouwer, Elisabeth G; Voogd, Adri C; den Heeten, Gerard J; Strobbe, Luc J A; de Haan, Anton F J; Wauters, Carla A; Broeders, Mireille J M; Duijm, Lucien E M

    2015-02-01

    To prospectively determine the screening mammography outcome at blinded and non-blinded double reading in a biennial population based screening programme in the south of the Netherlands. We included a consecutive series of 87,487 digital screening mammograms, obtained between July 2009 and July 2011. Screening mammograms were double read in either a blinded (2nd reader was not informed about the 1st reader's decision) or non-blinded fashion (2nd reader was informed about the 1st reader's decision). This reading strategy was alternated on a monthly basis. Women with discrepant readings between the two radiologists were always referred for further analysis. During 2 years follow-up, we collected the radiology reports, surgical correspondence and pathology reports of all referred women and interval breast cancers. Respectively 44,491 and 42,996 screens had been read either in a blinded or non-blinded fashion. Referral rate (3.3% versus 2.8%, pscreens (7.4 versus 6.5, p=0.14) and positive predictive value of referral (22% versus 23%, p=0.51) were comparable. Blinded double reading resulted in a significantly higher programme sensitivity (83% versus 76%, p=0.01). Per 1000 screened women, blinded double reading would yield 0.9 more screen detected cancers and 0.6 less interval cancers than non-blinded double reading, at the expense of 4.4 more recalls. We advocate the use of blinded double reading in order to achieve a better programme sensitivity, at the expense of an increased referral rate and false positive referral rate. Copyright © 2014 Elsevier Ltd. All rights reserved.

  4. Gender and CEO Compensation

    OpenAIRE

    Jun Tang; Yan Wang

    2014-01-01

    The gender pay gap issues have long been debated. Prior research has shown significant or insignificant relations between gender differences on pay gap. This paper focuses on studying the relation of CEO gender on CEO compensation. We examine whether gender is related to both base salary and total compensation of CEOs. Further, by controlling for firm-fixed effect, we are able to come close to better understand the relation between gender and CEO compensation. In essence, firm-fixed effect an...

  5. Digital signal processing for fiber nonlinearities [Invited

    DEFF Research Database (Denmark)

    Cartledge, John C.; Guiomar, Fernando P.; Kschischang, Frank R.

    2017-01-01

    This paper reviews digital signal processing techniques that compensate, mitigate, and exploit fiber nonlinearities in coherent optical fiber transmission systems......This paper reviews digital signal processing techniques that compensate, mitigate, and exploit fiber nonlinearities in coherent optical fiber transmission systems...

  6. Indexing executive compensation contracts

    NARCIS (Netherlands)

    Dittmann, I.; Maug, E.; Spalt, O.G.

    2013-01-01

    We analyze the efficiency of indexing executive pay by calibrating the standard compensation model to a large sample of U.S. CEOs. The benefits from indexing the strike price of options are small, and fully indexing all options would increase compensation costs by 50% for most firms. Indexing has

  7. Climate change and compensation

    DEFF Research Database (Denmark)

    Jensen, Karsten Klint; Flanagan, Tine Bech

    2013-01-01

    This paper presents a case for compensation of actual harm from climate change in the poorest countries. First, it is shown that climate change threatens to reverse the fight to eradicate poverty. Secondly, it is shown how the problems raised in the literature for compensation to some extent...... are based on misconceptions and do not apply to compensation of present actual harm. Finally, two arguments are presented to the effect that, in so far as developed countries accept a major commitment to mitigate climate change, they should also accept a commitment to address or compensate actual harm from...... climate change. The first argument appeals to the principle that if it is an injustice to cause risk of incurring harm in the future, then it is also an injustice to cause a similar harm now. The second argument appeals to the principle that if there is moral reason to reduce the risk of specific harms...

  8. Workers Compensation Claim Data -

    Data.gov (United States)

    Department of Transportation — This data set contains DOT employee workers compensation claim data for current and past DOT employees. Types of data include claim data consisting of PII data (SSN,...

  9. Prospective trial comparing full-field digital mammography (FFDM) versus combined FFDM and tomosynthesis in a population-based screening programme using independent double reading with arbitration

    Energy Technology Data Exchange (ETDEWEB)

    Skaane, Per [Oslo University Hospital, University of Oslo, Department of Radiology, Oslo (Norway); Oslo University Hospital Ullevaal, Department of Radiology, Breast Imaging Center, Oslo (Norway); Bandos, Andriy I. [University of Pittsburgh, Department of Biostatistics, Pittsburgh (United States); Gullien, Randi; Eben, Ellen B.; Haakenaasen, Unni; Izadi, Mina; Jebsen, Ingvild N.; Jahr, Gunnar; Krager, Mona [Department of Radiology, Oslo University Hospital, Oslo (Norway); Ekseth, Ulrika [Curato Roentgen Institute, Oslo (Norway); Hofvind, Solveig [The Cancer Registry, Institute of Population-based Cancer Research, Oslo (Norway)

    2013-08-15

    To compare double readings when interpreting full field digital mammography (2D) and tomosynthesis (3D) during mammographic screening. A prospective, Ethical Committee approved screening study is underway. During the first year 12,621 consenting women underwent both 2D and 3D imaging. Each examination was independently interpreted by four radiologists under four reading modes: Arm A - 2D; Arm B - 2D + CAD; Arm C - 2D + 3D; Arm D - synthesised 2D + 3D. Examinations with a positive score by at least one reader were discussed at an arbitration meeting before a final management decision. Paired double reading of 2D (Arm A + B) and 2D + 3D (Arm C + D) were analysed. Performance measures were compared using generalised linear mixed models, accounting for inter-reader performance heterogeneity (P < 0.05). Pre-arbitration false-positive scores were 10.3 % (1,286/12,501) and 8.5 % (1,057/12,501) for 2D and 2D + 3D, respectively (P < 0.001). Recall rates were 2.9 % (365/12,621) and 3.7 % (463/12,621), respectively (P = 0.005). Cancer detection was 7.1 (90/12,621) and 9.4 (119/12,621) per 1,000 examinations, respectively (30 % increase, P < 0.001); positive predictive values (detected cancer patients per 100 recalls) were 24.7 % and 25.5 %, respectively (P = 0.97). Using 2D + 3D, double-reading radiologists detected 27 additional invasive cancers (P < 0.001). Double reading of 2D + 3D significantly improves the cancer detection rate in mammography screening. (orig.)

  10. Changes in rates and severity of compensation claims for asthma due to diisocyanates: a possible effect of medical surveillance measures

    OpenAIRE

    Tarlo, S; Liss, G.; Yeung, K.

    2002-01-01

    Objectives: A medical surveillance programme was introduced into Ontario for workers exposed to diisocyanates in 1983, but no mandated surveillance programme is in effect in this province for other occupational respiratory sensitisers. This study assesses changes in incidence and severity of compensated claims for occupational asthma (OA) due to diisocyanates compared with other causes, which have occurred since the introduction of this surveillance programme.

  11. PREPARATION FOR RETIREMENT PROGRAMME

    CERN Multimedia

    Human Resources Division

    2001-01-01

    27 March 2001 from 2.00 p.m. to 5.30 p.m. 28 March 2001 from 2.00 p.m. to 5.30 p.m. 29 March 2001 from 2.00 p.m. to 5.30 p.m. 30 March 2001 from 2.00 p.m. to 4.45 p.m. Auditorium (Main Building) After the success of the preparation seminars held in recent years, it has been decided that the programme should continue. The forthcoming seminar has been prepared in close collaboration with the CERN Pensioners' Association. The programme will be organised over several half-day sessions. Once again this year, a special session will be devoted to the 10th revision of the Swiss state pension scheme, the 'AVS' (Assurance-Vieillesse et Survivants), and the consequences for international civil servants. A talk will be given by Mrs Danièle Siebold, Director of the Caisse Cantonale Genevoise de Compensation, aimed mainly at those residing in or intending to move to Switzerland, or who worked in Switzerland before joining CERN. To enable Mrs Siebold to respond to your concerns as effectively as possible, please ...

  12. Technology Programme

    Energy Technology Data Exchange (ETDEWEB)

    Batistoni, Paola; De Marco, Francesco; Pieroni, Leonardo (ed.)

    2005-07-01

    The technology activities carried out by the Euratom-ENEA Association in the framework of the European Fusion Development Agreement concern the Next Step (International Thermonuclear Experimental Reactor - ITER), the Long-Term Programme (breeder blanket, materials, International Fusion Materials Irradiation Facility - IFMIF), Power Plant Conceptual Studies and Socio-Economic Studies. The Underlying Technology Programme was set up to complement the fusion activities as well to develop technologies with a wider range of interest. The Technology Programme mainly involves staff from the Frascati laboratories of the Fusion Technical and Scientific Unit and from the Brasimone laboratories of the Advanced Physics Technologies Unit. Other ENEA units also provide valuable contributions to the programme. ENEA is heavily engaged in component development/testing and in design and safety activities for the European Fusion Technology Programme. Although the work documented in the following covers a large range of topics that differ considerably because they concern the development of extremely complex systems, the high level of integration and coordination ensures the capability to cover the fusion system as a whole. In 2004 the most significant testing activities concerned the ITER primary beryllium-coated first wall. In the field of high-heat-flux components, an important achievement was the qualification of the process for depositing a copper liner on carbon fibre composite (CFC) hollow tiles. This new process, pre-brazed casting (PBC), allows the hot radial pressing (HRP) joining procedure to be used also for CFC-based armour monoblock divertor components. The PBC and HRP processes are candidates for the construction of the ITER divertor. In the materials field an important milestone was the commissioning of a new facility for chemical vapour infiltration/deposition, used for optimising silicon carbide composite (SiCf/SiC) components. Eight patents were deposited during 2004

  13. (statcom) in synchronous compensator

    African Journals Online (AJOL)

    eobe

    The conventional and modified Newton bus power system. The conventional and modified Newton-Raphson-based power flow equations based power flow equations describing the steady state conditions before and after compensation was made to the system were presented. Solutions to the developed equations were ...

  14. Curriculum for Digital Education Leadership: A Concept Paper

    Science.gov (United States)

    Brown, Cheryl; Czerniewicz, Laura; Huang, Cheng-Wen; Mayisela, Tabisa

    2016-01-01

    The Commonwealth Digital Education Leadership Training in Action (C-DELTA) is a long-term programme of the Commonwealth of Learning (COL) to promote a digital education environment in Commonwealth Member Nations. This concept paper proposes a holistic approach to conceptualising digital education leadership. The C-DELTA programme will provide a…

  15. DC-Compensated Current Transformer †

    Science.gov (United States)

    Ripka, Pavel; Draxler, Karel; Styblíková, Renata

    2016-01-01

    Instrument current transformers (CTs) measure AC currents. The DC component in the measured current can saturate the transformer and cause gross error. We use fluxgate detection and digital feedback compensation of the DC flux to suppress the overall error to 0.15%. This concept can be used not only for high-end CTs with a nanocrystalline core, but it also works for low-cost CTs with FeSi cores. The method described here allows simultaneous measurements of the DC current component. PMID:26805830

  16. RELIABILITY OF LENTICULAR EXPANSION COMPENSATORS

    Directory of Open Access Journals (Sweden)

    Gabriel BURLACU,

    2011-11-01

    Full Text Available Axial lenticular compensators are made to take over the longitudinal heat expansion, shock , vibration and noise, made elastic connections for piping systems. In order to have a long life for installations it is necessary that all elements, including lenticular compensators, have a good reliability. This desire can be did by technology of manufactoring and assembly of compensators, the material for lenses and by maintenance.of compensator

  17. Chromatic Dispersion Estimation in Digital Coherent Receivers

    DEFF Research Database (Denmark)

    Soriano, Ruben Andres; Hauske, Fabian N.; Guerrero Gonzalez, Neil

    2011-01-01

    Polarization-diverse coherent demodulation allows to compensate large values of accumulated linear distortion by digital signal processing. In particular, in uncompensated links without optical dispersion compensation, the parameter of the residual chromatic dispersion (CD) is vital to set...... the according digital filtering function. We present different non-data-aided (blind) CD estimation methods for single-carrier transmission under implementation constraint conditions such as bandwidth limitation and sampling rate. The estimation performance for various modulation formats is compared...

  18. Stress Compensating Multilayers

    Science.gov (United States)

    Broadway, David M.; Ramsey, Brian D.; O'dell, Stephen; Gurgew, Danielle

    2017-01-01

    We present in-situ stress measurement results for single and multilayer thin-films deposited by magnetron sputtering. In particular, we report on the influence of the material interfaces on the ensuing stress in both the transient and steady-state regimes of film growth. This behavior is used to determine the appropriate thicknesses of the constituent layers that will result in a net tensile stress in multilayers composed of various material combinations. These multilayers can then be used to compensate the compressive integrated stress in single and multilayer EUV and x-ray optical coatings. The use of multilayers to compensate the integrated stress might be advantageous because, unlike single layers of chromium, the roughness is not expected to increase with the total thickness of the multilayer. In this paper, we demonstrate the technique for W/Si and Mo/Si multilayers and discuss its application to other material combinations.

  19. Compensability index for compensation radiotherapy after treatment interruptions

    Directory of Open Access Journals (Sweden)

    Putora Paul

    2012-12-01

    Full Text Available Abstract Background The goal of our work was to develop a simple method to evaluate a compensation treatment after unplanned treatment interruptions with respect to their tumour- and normal tissue effect. Methods We developed a software tool in java programming language based on existing recommendations to compensate for treatment interruptions. In order to express and visualize the deviations from the originally planned tumour and normal tissue effects we defined the compensability index. Results The compensability index represents an evaluation of the suitability of compensatory radiotherapy in a single number based on the number of days used for compensation and the preference of preserving the originally planned tumour effect or not exceeding the originally planned normal tissue effect. An automated tool provides a method for quick evaluation of compensation treatments. Conclusions The compensability index calculation may serve as a decision support system based on existing and established recommendations.

  20. Digital Library Education: Global Trends and Issues

    Science.gov (United States)

    Shem, Magaji

    2015-01-01

    The paper examines trends and issues in digital education programmes globally, drawing examples of developmental growth of Library Information Science (LIS), schools and digital education courses in North America, Britain, and Southern Asia, the slow growth of LIS schools and digital education in Nigeria and some countries in Africa and India. The…

  1. ISOLDE PROGRAMME

    CERN Document Server

    Fedosseev, V; Herfurth, F; Scheidenberger, C; Geppert, C; Gorges, C; Ratajczyk, T; Wiederhold, J C; Vogel, S; Munch, M K; Nieminen, P; Pakarinen, J J A; Lecesne, N; Bouzomita, H; Grinyer, J; Marques moreno, F M; Parlog, M; Blank, B A; Pedroza, J; Ghetta, V; Lozeva, R; Guillemaud mueller, D S; Cottereau, E; Cheikh mhamed, M; Tusseau nenez, S; Tungate, G; Walker, P M; Smith, A G; Fitzpatrick, C; Dominik, W M; Karny, M; Ciemny, A A; Nyman, G H; Thies, R M A; Lindberg, S K G; Langouche, G F; Mayet, P; Ory, G T; Kesteloot, N J K; Papuga, J; Dehairs, M H R; Callens, M; Araujo escalona, V I; Stamati, M; Boudreau, M; Domnanich, K A; Richter, D; Lutter, R J; Javaji, A; Engel, R Y; Wiehr, S; Martinez perez, T; Nacher gonzalez, E; Jungclaus, A; Ribeiro jimenez, G; Marroquin alonso, I; Cal gonzalez, J; Paziy, V; Salsac, M; Murphy, C; Podolyak, Z F; Bajoga, A D; Butler, P; Pritchard, A; Colosimo, S J; Steer, A N; Fox, S P; Wadsworth, B A; Truesdale, V L; Al monthery, M; Bracco, A; Guttormsen, M S; Badea, M N; Calinescu, S; Ujeniuc, S; Cederkall, J A; Zemlyanoy, S; Donets, E D; Golovkov, M; Vranicar, A; Harrichunder, S; Ncube, M; Strisovska, J; Wolf, E; Gerten, R F; Lehnert, J; Gladnishki, K A; Rainovski, G I; Pospisil, S; Datta pramanik, U; Benzoni, G; Fedorov, D; Molkanov, P; Maier, F M; Bonanni, A; Pfeiffer, B; Griesel, T; Wehner, L W; Mikkelsen, M; Lenzi, S M; Smith, J F; Kelly, C M; Acosta sanchez, L A; Chavez lomeli, E R; De melo bandeira tavares, P M; Vieira, J M; Martins da silva, M A; Lima lopes, A M; Mader, J; Kessler, P; Laurent, B G; Schweikhard, L C; Marx, G H; Kulczycka, E; Komorowska, M; Da silva, M F; Goncalves marques, C P; Baptista peres, M A; Welander, J E; Reiter, P; Miller, C; Martin sanchez-cano, D; Wiens, A; Blazhev, A A; Braun, N; Cappellazzo, M V; Birkenbach, B; Gerst, R; Dannhoff, M F; Sithole, M J; Bilgier, B; Nardelli, S; Araujo mendes, C M; Agramunt ros, J; Valencia marin, E; Pantea, E; Hessberger, F P; Leduc, A J; Mitsuoka, S; Carbonari, A W; Buchegger, F J; Garzon camacho, A; Dapo, H; Papka, P; Stachura, M K; Stora, T; Marsh, B A; Thiboud, J A; Heylen, H; Antalic, S; Stahl, C; Bauer, C; Thurauf, M; Maass, B; Sturm, S; Boehm, C; Wolf, N R; Ways, M; Steinsberger, T P; Riisager, K; Ruotsalainen, P A; Bastin, B; Duval, F T; Penessot, G; Flechard, X D; Desrues, P; Giovinazzo, J; Kurtukian nieto, T; Ascher, P E L; Roccia, S; Matea, I; Croizet, H A G; Bonnin, C M; Morfouace, P; Smith, A J; Guin, R; Banerjee, D; Gunnlaugsson, H P; Ohtsubo, T; Zhukov, M V; Tengborn, E A; Welker, A; Giannopoulos, E; Dessagne, P; Juscamaita vivanco, Y; De rydt, M A E; Da costa pereira, L M; Vermaelen, P; Monten, R; Wursten, E J; De coster, A; Jin, H; Hustings, J; Yu, H; Kruecken, R; Nowak, A K; Jankowski, M; Cano ott, D; Murphy, A S J; Shand, C M; Jones, G D; Herzberg, R; Ikin, P; Revill, J P; Everett, C; Napoli, D R; Scarel, G; Larsen, A; Tornyi, T G; Pascu, S G; Stroe, L; Toma, S; Jansson, K; Dronjak fahlander, M; Krupko, S; Hurst, A M; Veskovic, M; Nikolov, J; Masenda, H; Sibanda, W N; Rocchini, M; Klimo, J; Deicher, M; Wichert, T; Kronenberg, J; Helmke, A; Meliani, Z; Ivanov, V S; Keatings, J M; Kuti, I; Halasz, Z; Henry, M O; Bras de sequeira amaral, V; Espirito santo, F; Da silva, D J; Rosendahl, S; Vianden, R J; Speidel, K; Agarwal, I; Faul, T; Kownacki, J M; Martins correia, J G; Lorenz, K; Costa miranda, S M; Granadeiro costa, A R; Zyabkin, D; Kotthaus, T; Pfeiffer, M; Gironi, L; Cakirli, R B; Jensen, A; Romstedt, F; Constantino silva furtado, I; Heredia cardona, J A; Jordan martin, M D; Montaner piza, A; Zacate, M O; Plewinski, F; Mesli, A; Akakpo, E H; Pichard, A; Hergemoller, F; Neu, W; Fallis starhunter, J P; Voulot, D; Mrazek, J; Ugryumov, V; Savreux, R P; Kojouharov, I M; Stegmann, R; Kern, R O; Papst, O; Fitting, J; Lauer, M; Kirsebom, O S; Jensen, K L; Jokinen, A; Rahkila, P J; Hager, U D K; Konki, J P; Dubois, M; Orr, N A; Fabian, X; Huikari, J E; Goigoux, T; Magron, C; Zakari, A A; Maietta, M; Bachelet, C E M; Roussiere, B; Li, R; Canavan, R L; Lorfing, C; Foster, R M; Gislason, H P; Shayestehaminzadeh, S; Qi, B; Mukai, M; Watanabe, Y; Willmann, L; Kurcewicz, W; Wimmer, K; Meisel, Z P; Dorvaux, O; Nowacki, F; Koudriavtsev, I; Lievens, P; Delaure, B J P; Neyens, G; Darby, I G; Descamps, B O; Velten, P; Ceruti, S; Bunka, M; Vermeulen, C; Umbricht, C A; De boer, J; Podadera aliseda, I; Alcorta moreno, M; Pesudo fortes, V; Zielinska, M; Korten, W; Wang, C H; Lotay, G J; Mason, P; Rice, S J; Regan, P H; Willenegger, L M; Andreev, A; Yavuzkanat, N; Hass, M; Kumar, V; Valiente dobon, J J; Crespo campo, L; Zamfir, N - V; Deleanu, D; Jeppesen, H B; Wu, C; Pain, S D; Stracener, D W; Szilner, S; Colovic, P; Matousek, V; Venhart, M; Birova, M; Li, X; Stuchbery, A E; Lellep, G M; Chakraborty, S; Leoni, S; Chupp, T; Yilmaz, C; Severin, G; Garcia ramos, J E; Hadinia, B; Mc glynn, E; Monteiro de sena silvares de carvalho, I; Friedag, P; Figuera, P; Koos, V; Meot, V H; Pauwels, D B; Jancso, A; Srebrny, J; Alves, E J; David bosne, E; Bengtsson, L; Kalkuehler, M; Albers, M; Bharuth-ram, K; Akkus, B; Hemmingsen, L B S; Pedersen, J T; Dos santos redondo, L M; Rubio barroso, B; Algora, A; Kozlov, V; Mavela, D L; Mokhles gerami, A; Keeley, N; Bernardo da silva, E; Unzueta solozabal, I; Schell, J; Szybowicz, M; Yang, X; Plavec, J; Lassen, J; Johnston, K; Coquard, L; Bloch, T P; Bonig, E S; Ignatov, A; Paschalis, S; Fernandez martinez, G; Schilling, M; Habermann, T; Von hahn, R; Minaya ramirez, E E; Manea, V; Moore, I D; Wang, Y; Saastamoinen, A J; Grahn, T; Herzan, A; Stolze, S M; Clement, E; Dijon, A; Shornikov, A; Lienard, E; Gibelin, J D; Pain, C; Canchel, G; Simpson, G S; Latrasse, L P; Huang, W; Forest, D H; Billowes, J; Flanagan, K; Strashnov, I; Binnersley, C L; Sanchez poncela, M; Simpson, J; Morrall, P S; Grant, A F; Charisopoulos, S; Lagogiannis, A; Bhattacharya, C; Olafsson, S; Stepaniuk, M; Tornqvist, H T; Heinz, A M; White iv, E R; Vermote, S L; Courtin, S; Marechal, F; Randisi, G; Kana, T; Rajabali, M M; Lannoo, B J M; Frederickx, R; De coster, T J C; Roovers, N; De lemos lima, T A; Stryjczyk, M; Dockx, K; Haller, S; Rizzi, M; Reichert, S B; Bonn, J; Thirolf, P G; Garcia rios, A R; Gugliermina, V M; Cubero campos, M A; Sanchez tembleque, V; Benito garcia, J; Senoville, M; Mountford, D J; Gelletly, W; Alharbi, T S T; Wilson, E; Rigby, S V; Andreoiu, C; Paul, E S; Harkness, L J; Judson, D S; Wraith, C; Van esbroeck, K; Wadsworth, R; Cubiss, J G; Harding, R D; Vaintraub, S; Mandal, S K; Scarpa, D; Hoff, P; Syed naeemul, H; Borcea, R; Balabanski, D L; Marginean, R; Rotaru, F; Rudolph, D; Fahlander, C H; Chudoba, V; Soic, N; Naidoo, D; Veselsky, M; Kliman, J; Raisanen, J A; Dietrich, M; Maung maung than, M M T; Reed, M W; Danchev, M T; Ray, J; Roy, M; Hammen, M; Recchia, F; Capponi, L; Veghne csatlos, M M; Fryar, J; Mirzadeh vaghefi, S P; Trindade pereira, A M; De pinho oliveira, G N; Bakenecker, A; Tramm, C; Germic, V; Morel, P A; Kowalczyk, M; Matejska-minda, M; Wolinska-cichocka, M; Ringvall moberg, A; Mantovan, R; Fransen, C H; Radeck, F; Schneiders, D W; Steinbach, T; Vibenholt, J E; Magnussen, M J; Stevnhoved, H M; Comas lijachev, V; Dasenbrock-gammon, N M; Perkowski, J; O'neill, G G; Matveev, Y; Wegner, M; Liu, Z; Perez alvarez, T; Cerato, L; Radchenko, V; Molholt, T E; Tabares giraldo, J A; Srnka, D; Dlouhy, Z; Beck, D; Werner, V R; Homm, I; Eliseev, S; Blaum, K; Probst, M B; Kaiser, C J; Martin, J A; Refsgaard, J; Peura, P J; Greenlees, P T; Auranen, K; Delahaye, P; Traykov, E K; Perez loureiro, D; Mery, A A; Couratin, C; Tsekhanovich, I; Lunney, D; Gaulard, C V; Althubiti, N A S; Mottram, A D; Cullen, D M; Das, S K; Van de walle, J; Mazzocchi, C; Jonson, B N G; Woehr, A; Lesher, S R; Zuber, K T; Filippin, L; De witte, H J; Van den bergh, P A M; Raabe, R; Depuydt, M J F; Radulov, D P; Elseviers, J; Dirkx, D; Da silva fenta, A E; Reynders, K L T; Atanasov, D; Delombaerde, L; De maesschalck, D; Parnefjord gustafsson, F O A; Dunlop, R A; Tarasava, K; Gernhaeuser, R A; Weinzierl, W; Berger, C; Wendt, K; Achtzehn, T; Gottwald, T; Schug, M; Rossel, R E; Dominguez reyes, R R; Briz monago, J A; Koester, U H; Bunce, M R; Bowry, M D; Nakhostin, M; Shearman, R; Cresswell, J R; Joss, D T; Gredley, A; Groombridge, D; Laird, A M; Aslanoglou, X; Siem, S; Weterings, J A; Renstrom, T; Szpak, B T; Luczkowski, M J; Ghita, D; Bezbakh, A; Soltz, R A; Bollmann, J; Bhattacharya, P; Roy, S; Rahaman, M A; Wlodarski, T; Carvalho soares, J; Barzakh, A; Schertz, F; Froemmgen, N E; Liberati, V; Foy, B E; Weinheimer, C P; Zboril, M; Simon, R E; Popescu, L A; Czosnyka, T; Miranda jana, P A; Leimbach, D; Naskrecki, R; Plociennik, W A; Ruchowska, E E; Chiara, C J; Eberth, J H; Thomas, T; Thole, P; Queiser, M T; Lo bianco, G; D'amico, F; Muller, S; Sanchez alarcon, R M; Tain enriquez, J L; Orrigo, S E A; Orlandi, R; Masango, S; Plazaola muguruza, F C; Lepareur, N G; Fiebig, J M; Ceylan, N; Wildner, E; Kowalska, M; Malbrunot, S; Garcia ruiz, R F; Pallada, S; Slezak, M; Roeckl, E; Schrieder, G H; Ilieva, S K; Koenig, K L; Amoretti, M A; Lommen, J M; Fynbo, H O U; Weyer, G O P; Koldste, G T; Madsboll, K; Jensen, J H; Nieminen, A M; Reponen, M; Villari, A; Thomas, J; Saint-laurent, M; Sorlin, O H; Carniol, B; Pereira lopez, J; Grevy, S; Plaisir, C; Marie-jeanne, M J; Georgiev, G P; Etile, A M; Le blanc, F M; Verney, D; Stefan, G I; Assie, M; Suzuki, D; Guillot, J; Vazquez rodriguez, L; Campbell, P; Deacon, A N; Ware, T; Flueras, A; Xie, L; Banerjee, K; Piersa, M; Galaviz redondo, D; Johansson, H T; Schwarz, S; Toysa, A S; Aumont, J; Sferrazza, M; Van duppen, P L E; Versyck, S; Dehaes, J; Bree, N C F; Neyskens, P; Carlier, L M F; De schepper, S; Dewolf, K W A; Kabir, L R; Khodery ahmad, M A; Zadvornaya, A; Renaud, M A; Xu, Z; Smolders, P; Krastev, P; Garrett, P E; Rapisarda, E; Reber, J A; Mattolat, C F; Raeder, S; Habs, D; Fraile prieto, L M; Vidal, M; Perez liva, M; Calvo portela, P; Ulla pedrera, F J; Wood, R T; Lalkovski, S; Page, R; Petri, M; Barton, C J; Nichols, A J; Vermeulen, M J; Bloor, D M; Henderson, J; Wilson, G L; De angelis, G; Buerger, A; Modamio hoybjor, V; Klintefjord, M L; Ingeberg, V W; Fornal, B A; Marginean, R; Sava, T; Kusoglu, A; Suvaila, R; Lica, R; Costache, C; Mihai, R; Ionescu, A; Baeck, T M; Fijalkowska, A G; Sedlak, M; Koskelo, O K; Kyaw myat, K M; Ganguly, B; Goncalves marques, J; Cardoso, S; Seliverstov, M; Niessen, B D; Gutt, L E; Chapman, R; Spagnoletti, P N; Lopes, C; De oliveira amorim, C; Batista lopes, C M; Araujo, J; Schielke, S J; Daugas, J R; Gaudefroy, L; Chevrier, R; Szunyogh, D M; Napiorkowski, P J; Wrzosek-lipska, K; Wahl, U; Catarino, N; Pereira carvalho alves de sequeira, M; Walters, W; Hess, H E; Holler, A; Bettermann, L; Geibel, K; Taprogge, J; Lewandowski, L T N; Manchado de sola, F; Das gupta, S; Thulstrup, P W; Heinz, U; Nogwanya, T; Neidherr, D M; Morales lopez, A I; Gumenyuk, O; Peaker, A R; Wakabayashi, Y; Abrahams, K J; Martin montes, E J; Mach, H A; Souza ribeiro junior, I; He, J; Chalil, A; Xing, R; Giles, T J; Dorsival, A; Trujillo hernandez, J S; Kalaninova, Z; Andel, B; Venos, D; Kraemer, J; Saha, S; Neugart, R; Eronen, T O; Kreim, K D; Heck, M K; Goncharov, M; Karthein, J; Julin, R J; Jakobsson, E H U; Eleon, C; Achouri, N L; Grinyer, G F; Fontbonne, C M; Alfaurt, P; Lynch, K M; Wilkins, S G; Brown, A R; Imai, N; Pomorski, M J; Janiak, L; Nilsson, T; Stroke, H H; Stanja, J; Dangelser, E; Heenen, P; Godefroid, M; Mallion, S N; Diriken, J V J; Ghys, L H L; Khamehchi, M A; Van beveren, C; Gins, W A M; Finlay, P E J; Bouma, J T; Augustyns, V; Stegemann, S T; Koszorus, A; Mcnulty, J F; Lin, P; Ohlert, C M; Schwerdtfeger, W; Tengblad, O; Becerril reyes, A D; Perea martinez, A; Martinez perez, M C; Margerin, V; Rudigier, M; Alexander, T D; Patel, Z V; Hammond, N; Wearing, F; Patel, A; Jenkins, D G; Corradi, L; Galtarossa, F; Debernardi, A; Giacoppo, F; Tveten, G M; Malatji, K L; Krolas, W A; Stanoiu, M A; Rickert, E U; Ter-akopian, G; Cline, D; Riihimaeki, I A; Simon, K D; Wagner, F E; Turker, M; Neef, M H; Coombes, B J; Jakubek, J; Vagena, E; Bottoni, S; Nishimura, K; Correia, J; Rodrigues valdrez, C J; Adhikari, R; Ostrowski, A N; Hallmann, O; Scheck, M; Wady, P T; Lane, J; Krasznahorkay, A J; Kunne sohler, D; Meaney, A J; Baptista barbosa, M; Hochschulz, F; Roig, O; Behan, C C; Kargoll, S; Kemnitz, S; Carvalho teixeira, R C; Redondo cubero, A; Tallarida, G; Kaczarowski, R; Finke, F; Linnemann, A; Altenkirch, R; Saed-samii, N; Ansari, S H; Dlamini, W B; Adoons, V N; Ronning, C R; Wiedeking, M; Herlert, A J; Mehl, C V; Judge, S M; Gaertner, D; Divinskyi, S; Zagoraios, G; Boztosun, I; Van zyl, J J; Catherall, R; Lettry, J; Wenander, F J C; Zakoucky, D; Catchen, G L; Noertershaeuser, W; Kroell, T; Leske, J; Shubina, D; Murray, I M; Pancin, J; Delaunay, F; Poincheval, J J L; Audirac, L L; Gerbaux, M T; Aouadi, M; Sole, P G P; Fallot, M P; Onillon, A; Duchemin, C; Formento cavaier, R; Audi, G; Boukhari, A; Lau, C; Martin, J A; Barre, N H; Berry, T A; Procter, T J; Bladen, L K; Axiotis, M; Muto, S; Jeong, S C; Hirayama, Y; Korgul, A B; Minamisono, K; Bingham, C R; Aprahamian, A; Bucher, B M; Severijns, N; Huyse, M L; Himpe, P; Ferrer garcia, R; Marchi, T; Sambi, S; Budincevic, I; Neven, M; Verlinde, M N S; Bomans, P; Romano, N; Maugeri, E A; Klupp, S C; Dehn, M H; Heinke, R M; Naubereit, P; Maira vidal, A; Vedia fernandez, M V; Ibanez garcia, P B; Bruyneel, B J E; Materna, T; Hadynska-klek, K; Al-dahan, N; Alazemi, N; Carroll, R J; Babcock, C; Patronis, N; Eleme, Z; Dhal, A; Sahin, E; Goergen, A; Maj, A; Bednarczyk, P A; Borcea, C; Negoita, F; Suliman, G; Marginean, N M; Sotty, C O; Negret, A L; Nae, S A; Nita, C; Golubev, P I; Knyazev, A; Jost, C U; Petrik, K; Vaeyrynen, S A; Dracoulis, G D; Uher, J; Fernandez dominguez, B; Chakraborty, P; Avigo, R; Falahat, S; Lekovic, F; Dorrer, H J; Mengoni, D; Derkx, X; Angus, L J; Sandhu, K S; Gregor, E; Kelly, N A; Byrne, D J; Haas, H; Lourenco, A A; Sousa pereira, S M; Sousa, J B; De melo mendonca, T M; Tavares de sousa, C; Guerreiro dos santos oliveira custodio, L M; Da rocha rodrigues, P M; Yamaguchi, T; Thompson, P C; Rosenbusch, M; Wienholtz, F; Fischer, P; Iwanicki, J S; Rusek, K M; Hanstorp, D; Vetter, U; Wolak, J M; Park, S H; Warr, N V; Doornenbal, P C; Imig, A; Seidlitz, M; Moschner, K; Vogt, A; Kaya, L; Martel bravo, I; Orduz, A K; Serot, O; Majola, S N; Litvinov, Y; Bommert, M; Hensel, S; Markevich, V; Nishio, K; Ota, S; Matos, I; Zenkevich, A; Picado sandi, E; Forstner, O; Hu, B; Ntshangase, S S; Sanchez-segovia, J

    2002-01-01

    The experiments aim at a broad exploration of the properties of atomic nuclei far away from the region of beta stability. Furthermore, the unique radioactive beams of over 60~elements produced at the on-line isotope separators ISOLDE-2 and ISOLDE-3 are used in a wide programme of atomic, solid state and surface physics. Around 300 scientists are involved in the project, coming from about 70 laboratories. \\\\ \\\\ The electromagnetic isotope separators are connected on-line with their production targets in the extracted 600 MeV proton or 910~MeV Helium-3 beam of the Synchro-Cyclotron. Secondary beams of radioactive isotopes are available at the facility in intensities of 10$^1

  2. Active flutter control using discrete optimal constrained dynamic compensators

    Science.gov (United States)

    Broussard, J. R.; Halyo, N.

    1983-01-01

    A method for synthesizing digital active flutter suppression controllers using the concept of optimal output feedback is presented. A recently developd convergent algorithm is employed to determine constrained control law parameters that minimize an infinite-time discrete quadratic performance index. Low-order compensator dynamics are included in the control law and the compensator parameters are computed along with the output feedback gain as part of the optimization process. An input noise adjustment procedure is used to improve the stability margins of the digital active flutter controller. Results from investigations into sample rate variation, prefilter pole variation, and effects of varying flight condtions are discussed. The study indicates that a digital control law which accommodates computation delay can stabilize the wing with reasonable rms performance and adequate stability margins.

  3. Assessing Honduras? CCT Programme PRAF, Programa de Asignación Familiar: Expected and Unexpected Realities

    OpenAIRE

    Charity Moore

    2008-01-01

    This Country Study investigates the evolution and current state of Honduras? conditional cash transfer programme, known as PRAF, the Programa de Asignación Familiar. The details of the past and current programmes are examined closely, with special attention paid to what can be learned from the experiences. While the programme was originally intended to compensate poor households for the hardships imposed by structural adjustment, it has evolved into a programme focused on human capital develo...

  4. SOFIA image motion compensation

    Science.gov (United States)

    Dunham, Edward; Collins, Peter; Reinacher, Andreas; Lampater, Ulrich

    2010-07-01

    We describe a laboratory simulation of an image motion compensation system for SOFIA that uses high-speed image acquisition from the science instrument HIPO as the sensing element of the system and a Newport voice-coil actuated fast steering mirror as the correcting actuator. Performance of the system when coupled to the SOFIA secondary mirror is estimated based on the known current performance of the secondary mirror controller. The system is described and the observed performance is presented together with expectations for applicability in flight with SOFIA.

  5. Mejoramiento de procesos constructivos a partir de un módulo programable para captura de imágenes y simulación digital Improvement of constructive processes based on a programmable unit for images capture and digital simulation

    Directory of Open Access Journals (Sweden)

    Adriana Gómez Cabrera

    2012-08-01

    modelo de simulación digital del proceso constructivo. Los resultados obtenidos, permiten reducir tiempos de ciclo y dar un mejor uso a los recursos, representando ahorro de recursos para el proyecto.Civil projects executors are constantly dealing with the challenge of increasing productivity through resources optimization and their interaction; this has been addressed from different points of view using computational tools and manual tools. This challenge demands also, the implementation of new information technologies and digital tools as an effective strategy to capture reliable data that could contribute to improve the productivity quality and security indicators. This work presents a value generation in construction projects, through the use of new technologies to capture digital information that allows a construction process re-engineering using Lean Construction philosophy and digital simulation. At first, the design and development of an autonomous and programmable module is presented, powered with solar energy, used to capture digital images of construction processes. This system includes hardware and electronic components such as cameras, video cameras, electronic cards, computers, solar panels, web platform and communication systems; all controlled by a specially designed software which simplifies the control of the equipment and its components. This system simplifies the decision-making process regarding the construction methods and the resources involved, in order to minimize the costs and to increase the performance. The results obtained in the implementation of the module in a construction project in Bogota, Colombia, are presented in the second part of this paper. The analysis of the results, the constructive process characterization using Time-Lapse videos and a digital simulation model of the construction process are presented. These results allow reducing cycle times and using better the resources, which is translated into resources savings for the

  6. (IS) Programme at the University of Dar es Salaam

    African Journals Online (AJOL)

    wemafr

    or work places. According to the University of Sydney's postgraduate programme delivery policy (1998), flexible approaches lead to students primarily carrying out their coursework ... areas of study related to professions. ..... communication, digitization, database design, creation and management, news reporting and.

  7. Fiber Based Dispersion Compensation

    CERN Document Server

    Ramachandran, Siddharth

    2007-01-01

    Dispersion management is a critical design criterion that characterizes the performance of an optical network, and has impacted almost every aspect of the physical layer of an optical transmission line. The past 10 years have seen an explosion in the variety of device effects exploited to obtain optimal performance from dispersion compensators, and this is the first book that deals exclusively with this technology. It starts with an exposition on the fundamental physics underlying dispersion and its effects on optical pulses, followed by at least one chapter devoted to each of the fiber-based dispersion-compensating devices that have either been deployed or are considered as serious candidates for future networks. The final section of this book then describes the systems-level impact of these devices, hence providing a one-stop reference for all aspects of optical-communication-network design pertaining to dispersion-management. Each chapter is written by the leading experts in the field, drawn from both acad...

  8. Equality and Equity in Compensation

    OpenAIRE

    Bao, Jiayi; Wu, Andy

    2017-01-01

    Equity compensation is widely used for incentivizing skilled employees, particularly in new technology businesses. Traditional theories explaining why firms offer equity suggest that workers with higher rank should receive compensation packages more heavily weighted in equity. However, we observe the puzzle that many firms adopt an equality-in-equity strategy: they offer different cash salaries across all jobs but the same equity compensation. We propose a behavioral theory of domain-continge...

  9. Compensations during Unsteady Locomotion.

    Science.gov (United States)

    Qiao, Mu; Jindrich, Devin L

    2014-12-01

    Locomotion in a complex environment is often not steady, but the mechanisms used by animals to power and control unsteady locomotion (stability and maneuverability) are not well understood. We use behavioral, morphological, and impulsive perturbations to determine the compensations used during unsteady locomotion. At the level both of the whole-body and of joints, quasi-stiffness models are useful for describing adjustments to the functioning of legs and joints during maneuvers. However, alterations to the mechanics of legs and joints often are distinct for different phases of the step cycle or for specific joints. For example, negotiating steps involves independent changes of leg stiffness during compression and thrust phases of stance. Unsteady locomotion also involves parameters that are not part of the simplest reduced-parameter models of locomotion (e.g., the spring-loaded inverted pendulum) such as moments of the hip joint. Extensive coupling among translational and rotational parameters must be taken into account to stabilize locomotion or maneuver. For example, maneuvers with morphological perturbations (increased rotational inertial turns) involve changes to several aspects of movement, including the initial conditions of rotation and ground-reaction forces. Coupled changes to several parameters may be employed to control maneuvers on a trial-by-trial basis. Compensating for increased rotational inertia of the body during turns is facilitated by the opposing effects of several mechanical and behavioral parameters. However, the specific rules used by animals to control translation and rotation of the body to maintain stability or maneuver have not been fully characterized. We initiated direct-perturbation experiments to investigate the strategies used by humans to maintain stability following center-of-mass (COM) perturbations. When walking, humans showed more resistance to medio-lateral perturbations (lower COM displacement). However, when running, humans

  10. Optimal Memory Tests Coding for Programmable BIST Architecture

    OpenAIRE

    Alexander A. Ivaniuk

    2008-01-01

    Programmable memory BIST architecture is becoming a necessity for embedded memory cores. Classical memory BIST architectures use fixed algorithmic tests during the whole live of digital device. To improve the flexibility of memory BIST the programmable solution, based on finite state machine with microcode control, was invented. The requirement to use such flexibility is dictated by reason to use newest test for memory cores. In this paper a new Programmable Memory BIST architecture with smal...

  11. Compensation Performance for Induction Motor Load of Voltage Dip Compensator

    Science.gov (United States)

    Nagamoto, Takamichi; Takayama, Katsumi; Kai, Takaaki

    The variable speed drives of the power electronics application are the most sensitive to the voltage dip that is caused by power system fault. Variable speed drives are composed by the converter, the voltage source inverter and induction motor. They could fall into operation failure by wrong control in the converter when degree of the voltage dip exceeds 15% and 10ms. Therefore, important loads are equipped with the voltage dip compensation. Since the load characteristic of the converter equals nearly the impedance load, the induction motors connected directly to power supply are more sensitive to the output voltage waveform of the compensator than the converter. Thus, the induction motors are used as the important load (compensated load) on the simulation. The simulations of the compensation performance to the induction motors are carried out by using simulation tool PSCAD/EMTDC. It is confirmed that the goal of the compensation performance is able to be achieved.

  12. Technology-Enhanced Physics Programme for Community-Based Science Learning: Innovative Design and Programme Evaluation in a Theme Park

    Science.gov (United States)

    Tho, Siew Wei; Chan, Ka Wing; Yeung, Yau Yuen

    2015-01-01

    In this study, a new physics education programme is specifically developed for a famous theme park in Hong Kong to provide community-based science learning to her visitors, involving her three newly constructed rides. We make innovative use of digital technologies in this programme and incorporate a rigorous evaluation of the learning…

  13. DIGITAL TIMELINES- AN INTERDISCIPLINARY APPROACH TO DEMENTIA

    National Research Council Canada - National Science Library

    Cristina Anca COLIBABA; Stefan COLIBABA; Rodica GARDIKIOTIS

    2015-01-01

    .... The project relies on thorough research on dementia carried out in five European countries and aims at producing a training programme and creating digital resources which can encapsulate memory...

  14. CFO compensation method using optical feedback path for coherent optical OFDM system

    Science.gov (United States)

    Moon, Sang-Rok; Hwang, In-Ki; Kang, Hun-Sik; Chang, Sun Hyok; Lee, Seung-Woo; Lee, Joon Ki

    2017-07-01

    We investigate feasibility of carrier frequency offset (CFO) compensation method using optical feedback path for coherent optical orthogonal frequency division multiplexing (CO-OFDM) system. Recently proposed CFO compensation algorithms provide wide CFO estimation range in electrical domain. However, their practical compensation range is limited by sampling rate of an analog-to-digital converter (ADC). This limitation has not drawn attention, since the ADC sampling rate was high enough comparing to the data bandwidth and CFO in the wireless OFDM system. For CO-OFDM, the limitation is becoming visible because of increased data bandwidth, laser instability (i.e. large CFO) and insufficient ADC sampling rate owing to high cost. To solve the problem and extend practical CFO compensation range, we propose a CFO compensation method having optical feedback path. By adding simple wavelength control for local oscillator, the practical CFO compensation range can be extended to the sampling frequency range. The feasibility of the proposed method is experimentally investigated.

  15. Takeovers and (Excess) CEO Compensation

    NARCIS (Netherlands)

    Feito Ruiz, Isabel; Renneboog, Luc

    2017-01-01

    We study if a CEO’s equity-based compensation affects the expected value generation in takeovers. When the objectives of management and shareholders are more aligned, as proxied by the use of equity-based compensation, more value-maximizing acquisitions are expected. Whereas in widely-held firms the

  16. A digital control system for neutron spectrometers

    DEFF Research Database (Denmark)

    Hansen, Knud Bent; Skaarup, Per

    1968-01-01

    A description is given of the principles of a digital system used to control neutron spectrometers. The system is composed of independent functional units with the control programme stored on punched paper tape or in a computer.......A description is given of the principles of a digital system used to control neutron spectrometers. The system is composed of independent functional units with the control programme stored on punched paper tape or in a computer....

  17. DIGITAL TIMELINES- AN INTERDISCIPLINARY APPROACH TO DEMENTIA

    OpenAIRE

    Cristina Anca COLIBABA; Stefan COLIBABA; Rodica GARDIKIOTIS

    2015-01-01

    The Digital timelines project (2014-1-UK01-KA204-000071) co-financed by the European Union under the Erasmus+ programme and coordinated by the Lancaster and Morecambe College, UK addresses the issue of dementia. The project relies on thorough research on dementia carried out in five European countries and aims at producing a training programme and creating digital resources which can encapsulate memory stimulating information from a variety of media to benefit specifically the person with dem...

  18. A Digital Data Processor for Synthetic Aperture Radar

    NARCIS (Netherlands)

    Vlothuizen, W.J.; Medenblik, H.J.W.

    2007-01-01

    This paper presents a Digital Data Processor (DDP) for Synthetic Aperture Radar (SAR). The DDP captures SAR data at a 1 GHz sample rate and processes data at 350 MB/s. Data reduction is performed by a digital down converter, programmable decimating filter and a fully programmable presummer. The

  19. In-phase and quadrature imbalance modeling, estimation, and compensation

    CERN Document Server

    Li, Yabo

    2013-01-01

    This book provides a unified IQ imbalance model and systematically reviews the existing estimation and compensation schemes. It covers the different assumptions and approaches that lead to many models of IQ imbalance. In wireless communication systems, the In-phase and Quadrature (IQ) modulator and demodulator are usually used as transmitter (TX) and receiver (RX), respectively. For Digital-to-Analog Converter (DAC) and Analog-to-Digital Converter (ADC) limited systems, such as multi-giga-hertz bandwidth millimeter-wave systems, using analog modulator and demodulator is still a low power and l

  20. A Digital Loudspeaker: Experimental Construction

    OpenAIRE

    P. Valoušek

    2006-01-01

    To verify the principal functionality of a digital loudspeaker the experimental construction of a digital loudspeaker was designed. This system consists of signal processing unit and transducer array. Both parts offer 8-bit precision and wide a spectrum of sampling frequencies. The signal processing unit is based on a programmable logic device which provides a flexible system for preparing a driving signal. The transducer array is formed by conventional dynamic transducers arranged in a circl...

  1. Differential non-linearity compensation in ADCs employing charge redistribution in an array of binary weighted capacitors

    CERN Document Server

    Sushkov, V V

    2000-01-01

    Differential non-linearity (DNL) compensation in an analog-to-digital converter (ADC) is discussed. The successive approximation ADC under study employs charge redistribution in an array of binary weighted capacitors. The method of DNL compensation is supposed to be implemented in the ADC destined for the tracker readout of the CMS detector at LHC. The parameters of the DNL compensation technique are treated with the constructed simulator built in the Mathematica programming environment. (4 refs).

  2. Economic viability of new launched school lunch programmes

    DEFF Research Database (Denmark)

    Jensen, Jørgen Dejgård; Smed, Sinne; Mørkbak, Morten Raun

    2013-01-01

    The objective of this paper is to investigate determinants for the viability of school lunch programmes with a zero-price start-up period. The study is based on a Danish pilot experiment, in which 38 schools were subsidized to provide free school lunch for all pupils during a two-month start...... activities related to the schools’ support and the users’ feeling of ownership, as well as internal professionalism and leadership in the implementation of the school lunch programme are important for the viability of the programme. Strong performance on the latter factors might to some extent compensate...... for the gap between cost and users’ willingness to pay for school lunches....

  3. Automates programmables Partie 3 : Langages de programmation

    CERN Document Server

    International Electrotechnical Commission. Geneva

    1993-01-01

    S'applique à la représentation imprimée et affichée, à l'aide des caractères ISO/CEI 646, des langages de programmation devant être utilisés pour les automates programmables. Spécifie la syntaxe et la sémantique.

  4. Aging: compensation or maturation?

    Science.gov (United States)

    Aine, Cheryl J; Woodruff, Chad C; Knoefel, Janice E; Adair, John C; Hudson, David; Qualls, Clifford; Bockholt, Jeremy; Best, Elaine; Kovacevic, Sanja; Cobb, Wayne; Padilla, Denise; Hart, Blaine; Stephen, Julia M

    2006-10-01

    Neuroimaging studies of healthy aging often reveal differences in neural activation patterns between young and elderly groups for episodic memory tasks, even though there are no differences in behavioral performance. One explanation typically offered is that the elderly compensate for their memory deficiencies through the recruitment of additional prefrontal regions. The present study of healthy aging compared magnetoencephalographic (MEG) time-courses localized to specific cortical regions in two groups of subjects (20-29 years and >or=65 years) during a visual delayed-match-to-sample (DMS) task. MR morphometrics and neuropsychological test results were also examined with the hope of providing insight into the nature of the age-related differences. The behavioral results indicated no differences in performance between young and elderly groups. Although there was a main effect of age on the latency of the initial peak in primary/secondary visual cortex, these longer latencies were not correlated with the performance of elderly on the DMS task. The lateral occipital gyrus (LOG) revealed qualitatively different patterns of activity for the two age groups corroborated by neuropsychological test results. Morphometric results for the young versus elderly groups revealed less white (WM) and gray matter (GM) volumes in the frontal lobes of the elderly. When a group of middle-aged subjects (33-43 years) was included in the morphometric analyses, the middle-aged subjects revealed statistically greater WM volumes in frontal and parietal cortex suggesting immature WM tracts in the young. Perhaps our elderly utilized a different strategy compared to the young due to the different brain maturation levels of these groups.

  5. Executive Compensation: Six Questions That Need Answering

    OpenAIRE

    Abowd, John M.; Kaplan, David S.

    1999-01-01

    In this article, we focus on how recent research advances can be used to address the following six questions: (1) How much does executive compensation cost the firm? (2) How much is executive compensation worth to the recipient? (3) How well does executive compensation work? (4) What are the effects of executive compensation? (5) How much executive compensation is enough? (6) Could executive compensation be improved? We stress the formal link between executive pay and performance that is prov...

  6. The performance and limitations of FPGA-based digital servos for atomic, molecular, and optical physics experiments.

    Science.gov (United States)

    Yu, Shi Jing; Fajeau, Emma; Liu, Lin Qiao; Jones, David J; Madison, Kirk W

    2018-02-01

    In this work, we address the advantages, limitations, and technical subtleties of employing field programmable gate array (FPGA)-based digital servos for high-bandwidth feedback control of lasers in atomic, molecular, and optical physics experiments. Specifically, we provide the results of benchmark performance tests in experimental setups including noise, bandwidth, and dynamic range for two digital servos built with low and mid-range priced FPGA development platforms. The digital servo results are compared to results obtained from a commercially available state-of-the-art analog servo using the same plant for control (intensity stabilization). The digital servos have feedback bandwidths of 2.5 MHz, limited by the total signal latency, and we demonstrate improvements beyond the transfer function offered by the analog servo including a three-pole filter and a two-pole filter with phase compensation to suppress resonances. We also discuss limitations of our FPGA-servo implementation and general considerations when designing and using digital servos.

  7. An Integrated Thermal Compensation System for MEMS Inertial Sensors

    Directory of Open Access Journals (Sweden)

    Sheng-Ren Chiu

    2014-03-01

    Full Text Available An active thermal compensation system for a low temperature-bias-drift (TBD MEMS-based gyroscope is proposed in this study. First, a micro-gyroscope is fabricated by a high-aspect-ratio silicon-on-glass (SOG process and vacuum packaged by glass frit bonding. Moreover, a drive/readout ASIC, implemented by the 0.25 µm 1P5M standard CMOS process, is designed and integrated with the gyroscope by directly wire bonding. Then, since the temperature effect is one of the critical issues in the high performance gyroscope applications, the temperature-dependent characteristics of the micro-gyroscope are discussed. Furthermore, to compensate the TBD of the micro-gyroscope, a thermal compensation system is proposed and integrated in the aforementioned ASIC to actively tune the parameters in the digital trimming mechanism, which is designed in the readout ASIC. Finally, some experimental results demonstrate that the TBD of the micro-gyroscope can be compensated effectively by the proposed compensation system.

  8. Workers' compensation and hepatitis C

    National Research Council Canada - National Science Library

    Sfikas, P M

    2000-01-01

    Dentists may be required to pay workers' compensation benefits for an employee with hepatitis C even if the employee was not working at the dentist's office at the time he or she contracted the disease...

  9. Learning Media Programme

    NARCIS (Netherlands)

    Westera, Wim

    2009-01-01

    Westera, W. (2009). Learning Media Programme. Introductory presentation of Learning Media Programme for visitors of Kavala University of Technology, Kavala, Greece and National Institute of Multimedia Education, Chiba, Japan. March, 2, 2009, Heerlen, The Netherlands.

  10. River research programme

    CSIR Research Space (South Africa)

    Ferrar, AA

    1988-01-01

    Full Text Available The need for a comprehensive, multidisciplinary research programme for river ecosystems is described. The scope of the programme needs to include basic descriptions of a systems and biota, the testing and development of functional theory...

  11. Digital Literacy Practices and Their Layered Multiplicity

    Science.gov (United States)

    Bhatt, Ibrar

    2012-01-01

    Success in educational programmes often depends on learners being able to negotiate and manage a variety of digital literacy practices commensurate with the literacy demands of their course. This paper reports on preliminary findings of a multi-method PhD study which examines the digital literacy practices arising when an adult learner in a UK…

  12. A Digital Loudspeaker: Experimental Construction

    Directory of Open Access Journals (Sweden)

    P. Valoušek

    2006-01-01

    Full Text Available To verify the principal functionality of a digital loudspeaker the experimental construction of a digital loudspeaker was designed. This system consists of signal processing unit and transducer array. Both parts offer 8-bit precision and wide a spectrum of sampling frequencies. The signal processing unit is based on a programmable logic device which provides a flexible system for preparing a driving signal. The transducer array is formed by conventional dynamic transducers arranged in a circle. The initial measurements and listening tests provide acceptable results that are valuable for further digital loudspeaker developments. 

  13. Temperature-compensated 8-bit column driver for AMLCD

    Science.gov (United States)

    Dingwall, Andrew G. F.; Lin, Mark L.

    1995-06-01

    An all-digital, 5 V input, 50 Mhz bandwidth, 10-bit resolution, 128- column, AMLCD column driver IC has been designed and tested. The 10-bit design can enhance display definition over 6-bit nd 8-bit column drivers. Precision is realized with on-chip, switched-capacitor DACs plus transparently auto-offset-calibrated, opamp outputs. Increased resolution permits multiple 10-bit digital gamma remappings in EPROMs over temperature. Driver IC features include externally programmable number of output column, bi-directional digital data shifting, user- defined row/column/pixel/frame inversion, power management, timing control for daisy-chained column drivers, and digital bit inversion. The architecture uses fewer reference power supplies.

  14. Digital food photography

    National Research Council Canada - National Science Library

    Manna, Lou; Moss, Bill

    2005-01-01

    ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 The Digital Age . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 The Digital Process...

  15. Digital squares

    DEFF Research Database (Denmark)

    Forchhammer, Søren; Kim, Chul E

    1988-01-01

    Digital squares are defined and their geometric properties characterized. A linear time algorithm is presented that considers a convex digital region and determines whether or not it is a digital square. The algorithm also determines the range of the values of the parameter set of its preimages. ....... The analysis involves transforming the boundary of a digital region into parameter space of slope and y-intercept......Digital squares are defined and their geometric properties characterized. A linear time algorithm is presented that considers a convex digital region and determines whether or not it is a digital square. The algorithm also determines the range of the values of the parameter set of its preimages...

  16. Improved Quantization Error Compensation Method for Fixed-Width Booth Multipliers

    Directory of Open Access Journals (Sweden)

    Xiaolong Ma

    2014-01-01

    Full Text Available A novel quantization error (QE compensation method is proposed in design of high accuracy fixed-width radix-4 Booth multipliers, which will effectively reduce the QE and save the area of multipliers when they are employed in cognitive radio (CR detector and digital signal processor (DSP. The truncated partial-products of the proposed multipliers are finely divided into three sections: reserved section, adaptive compensation section, and constant compensation section. The QE compensation carries of the multipliers are generated by applying probability estimation based on a shrunken minor truncated section which is a combination of the constant compensation and adaptive compensation. The proposed compensation method not only reduces the QE of the fixed-width Booth multipliers, but also avoids the exhaustive computing resources (time and memory during getting the compensation carries by statistical simulation. The proposed method can achieve higher accuracy than the existing works under the same area and power budgets. Simulation and experiment results show that the improved compensation method has the minimum power-delay products compared with the existing methods under the same area and can save up to 30% area for realization of full-width radix-4 Booth multipliers.

  17. 48 CFR 970.2270 - Unemployment compensation.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 5 2010-10-01 2010-10-01 false Unemployment compensation... Unemployment compensation. (a) Each state has its own unemployment compensation system to provide payments to... unemployment compensation benefits through a payroll tax on employers. Most DOE contractors are subject to the...

  18. Crime victims‘ right to compensation

    Directory of Open Access Journals (Sweden)

    Mrvić-Petrović Nataša

    2012-01-01

    Full Text Available This paper analyzes the most important documents of the United Nations, Council of Europe and the European Union relating to rights to damage compensation (restitution from offender and state compensation. The analysis shows that there is a gradual move from the concept of exercising the rights of victims in favor of a solidaristic model that takes less into account the rights of victims, and more the need to satisfy their legitimate interests. The economic crisis that is undermining the foundations of the welfare state could jeopardize the realization of this concept, especially in those European countries where the criminal justice system focuses solely on the offender, as is the case in Serbia. In such circumstances, regulation which protects the right to compensation, other rights and interests of victims, shall apply only to the extent that serves crime prevention. So it happens that in spite of a suitable normative framework and developments regarding the protection of victims of domestic violence and trafficking, the right to compensation and other rights of the victims do not actually get actualized in practice. In order to overcome this, a systemic reform to the criminal justice system should be undertaken with the aim to redirect the system towards the victim of the offense. Within these reforms a public fund for compensation of the victims of violence should be established and the process of mediation between the victim and the offender with the goal to make a settlement should be regulated, because these mechanisms do not exist in Serbia.

  19. Compensation for electrical converter nonlinearities

    Energy Technology Data Exchange (ETDEWEB)

    Perisic, Milun; Ransom, Ray M; Kajouke, Lateef A

    2013-11-19

    Systems and methods are provided for delivering energy from an input interface to an output interface. An electrical system includes an input interface, an output interface, an energy conversion module between the input interface and the output interface, an inductive element between the input interface and the energy conversion module, and a control module. The control module determines a compensated duty cycle control value for operating the energy conversion module to produce a desired voltage at the output interface and operates the energy conversion module to deliver energy to the output interface with a duty cycle that is influenced by the compensated duty cycle control value. The compensated duty cycle control value is influenced by the current through the inductive element and accounts for voltage across the switching elements of the energy conversion module.

  20. Digital Culture and Digital Library

    Directory of Open Access Journals (Sweden)

    Yalçın Yalçınkaya

    2016-12-01

    Full Text Available In this study; digital culture and digital library which have a vital connection with each other are examined together. The content of the research consists of the interaction of culture, information, digital culture, intellectual technologies, and digital library concepts. The study is an entry work to integrity of digital culture and digital library theories and aims to expand the symmetry. The purpose of the study is to emphasize the relation between the digital culture and digital library theories acting intersection of the subjects that are examined. Also the perspective of the study is based on examining the literature and analytical evaluation in both studies (digital culture and digital library. Within this context, the methodology of the study is essentially descriptive and has an attribute for the transmission and synthesis of distributed findings produced in the field of the research. According to the findings of the study results, digital culture is an inclusive term that describes the effects of intellectual technologies in the field of information and communication. Information becomes energy and the spectrum of the information is expanding in the vertical rise through the digital culture. In this context, the digital library appears as a new living space of a new environment. In essence, the digital library is information-oriented; has intellectual technology support and digital platform; is in a digital format; combines information resources and tools in relationship/communication/cooperation by connectedness, and also it is the dynamic face of the digital culture in time and space independence. Resolved with the study is that the digital libraries are active and effective in the formation of global knowing and/or mass wisdom in the process of digital culture.

  1. Adaptive Motion Compensation in Radiotherapy

    CERN Document Server

    Murphy, Martin J

    2011-01-01

    External-beam radiotherapy has long been challenged by the simple fact that patients can (and do) move during the delivery of radiation. Recent advances in imaging and beam delivery technologies have made the solution--adapting delivery to natural movement--a practical reality. Adaptive Motion Compensation in Radiotherapy provides the first detailed treatment of online interventional techniques for motion compensation radiotherapy. This authoritative book discusses: Each of the contributing elements of a motion-adaptive system, including target detection and tracking, beam adaptation, and pati

  2. Electronic amplifiers for automatic compensators

    CERN Document Server

    Polonnikov, D Ye

    1965-01-01

    Electronic Amplifiers for Automatic Compensators presents the design and operation of electronic amplifiers for use in automatic control and measuring systems. This book is composed of eight chapters that consider the problems of constructing input and output circuits of amplifiers, suppression of interference and ensuring high sensitivity.This work begins with a survey of the operating principles of electronic amplifiers in automatic compensator systems. The succeeding chapters deal with circuit selection and the calculation and determination of the principal characteristics of amplifiers, as

  3. Optical biosensor with dispersion compensation.

    Science.gov (United States)

    Zong, W; Thirstrup, C; Sørensen, M H; Pedersen, H C

    2005-05-15

    Dispersion limits performance in many optical systems. In surface plasmon resonance (SPR) biosensors, the sensing area is an optical element in which the dispersion depends on the effective refractive index of the biochemical compounds to be measured. We report a method of compensating for wavelength dispersion in SPR biosensors employing two integrated diffractive optical coupling elements in a polymer substrate. The dispersion compensation is achieved over the whole dynamic measurement range and provides a biosensor more robust to wavelength fluctuations than prism-coupler SPR systems. The concept can readily be employed in other types of sensor measuring refractive-index changes.

  4. Control Design and Digital Implementation of a Fast 2-Degree-of-Freedom Translational Optical Image Stabilizer for Image Sensors in Mobile Camera Phones

    Directory of Open Access Journals (Sweden)

    Jeremy H. -S. Wang

    2017-10-01

    Full Text Available This study presents design, digital implementation and performance validation of a lead-lag controller for a 2-degree-of-freedom (DOF translational optical image stabilizer (OIS installed with a digital image sensor in mobile camera phones. Nowadays, OIS is an important feature of modern commercial mobile camera phones, which aims to mechanically reduce the image blur caused by hand shaking while shooting photos. The OIS developed in this study is able to move the imaging lens by actuating its voice coil motors (VCMs at the required speed to the position that significantly compensates for imaging blurs by hand shaking. The compensation proposed is made possible by first establishing the exact, nonlinear equations of motion (EOMs for the OIS, which is followed by designing a simple lead-lag controller based on established nonlinear EOMs for simple digital computation via a field-programmable gate array (FPGA board in order to achieve fast response. Finally, experimental validation is conducted to show the favorable performance of the designed OIS; i.e., it is able to stabilize the lens holder to the desired position within 0.02 s, which is much less than previously reported times of around 0.1 s. Also, the resulting residual vibration is less than 2.2–2.5 μm, which is commensurate to the very small pixel size found in most of commercial image sensors; thus, significantly minimizing image blur caused by hand shaking.

  5. Control Design and Digital Implementation of a Fast 2-Degree-of-Freedom Translational Optical Image Stabilizer for Image Sensors in Mobile Camera Phones.

    Science.gov (United States)

    Wang, Jeremy H-S; Qiu, Kang-Fu; Chao, Paul C-P

    2017-10-13

    This study presents design, digital implementation and performance validation of a lead-lag controller for a 2-degree-of-freedom (DOF) translational optical image stabilizer (OIS) installed with a digital image sensor in mobile camera phones. Nowadays, OIS is an important feature of modern commercial mobile camera phones, which aims to mechanically reduce the image blur caused by hand shaking while shooting photos. The OIS developed in this study is able to move the imaging lens by actuating its voice coil motors (VCMs) at the required speed to the position that significantly compensates for imaging blurs by hand shaking. The compensation proposed is made possible by first establishing the exact, nonlinear equations of motion (EOMs) for the OIS, which is followed by designing a simple lead-lag controller based on established nonlinear EOMs for simple digital computation via a field-programmable gate array (FPGA) board in order to achieve fast response. Finally, experimental validation is conducted to show the favorable performance of the designed OIS; i.e., it is able to stabilize the lens holder to the desired position within 0.02 s, which is much less than previously reported times of around 0.1 s. Also, the resulting residual vibration is less than 2.2-2.5 μm, which is commensurate to the very small pixel size found in most of commercial image sensors; thus, significantly minimizing image blur caused by hand shaking.

  6. Digital divide across borders: A cross-national study of adolescents use of digital technologies

    NARCIS (Netherlands)

    Notten, N.J.W.R.; Peter, J.; Kraaykamp, G.L.M.; Valkenburg, P.M.

    2009-01-01

    In this study, we analyse digital divides in terms of social inequality in digital access and use patterns from a hierarchical perspective. Using data from the Programme for International Student Assessment (PISA) 2003 in 30 nations, we focus on social cleavages in mid-adolescents access and use of

  7. Digital divide across borders : A cross-national study of adolescents’ use of digital technologies

    NARCIS (Netherlands)

    Notten, N.; Peter, J.; Kraaykamp, G.; Valkenburg, P.M.

    2009-01-01

    In this study, we analyse digital divides in terms of social inequality in digital access and use patterns from a hierarchical perspective. Using data from the Programme for International Student Assessment (PISA) 2003 in 30 nations, we focus on social cleavages in mid-adolescents’ access and use of

  8. Digital Insights

    DEFF Research Database (Denmark)

    Knudsen, Gry Høngsmark

    This dissertation forwards the theory of digital consumer-response as a perspective to examine how digital media practices influence consumers’ response to advertising. Digital consumer-response is a development of advertising theory that encompasses how consumers employ their knowledge...... and practices with digital media, when they meet and interpret advertising. Through studies of advertising response on YouTube and experiments with consumers’ response to digitally manipulated images, the dissertation shows how digital media practices facilitate polysemic and socially embedded advertising...... response. The dissertation argues that digital consumer-response changes our understanding of texts, contexts, consumers, and agency, because digital consumer-response operates with a discursive analytical perspective, as opposed to the micro-textual analyses of much advertising research. Further...

  9. Digital Tectonics

    DEFF Research Database (Denmark)

    Christiansen, Karl; Borup, Ruben; Søndergaard, Asbjørn

    2014-01-01

    Digital Tectonics treats the architectonical possibilities in digital generation of form and production. The publication is the first volume of a series, in which aspects of the strategic focus areas of the Aarhus School of Architecture will be disseminated.......Digital Tectonics treats the architectonical possibilities in digital generation of form and production. The publication is the first volume of a series, in which aspects of the strategic focus areas of the Aarhus School of Architecture will be disseminated....

  10. En Note om Programmering

    DEFF Research Database (Denmark)

    Nørmark, Kurt

    2012-01-01

    Denne note er en introduktion til programmering. Formålet er at give dig et indblik i hvad programmering egentlig er for noget. Jeg vil vise at programmering kan foregå på forskellige måder, og at der er mange forskellige udfordringer forbundet med at programmere. Noten vil ikke knytte sig til et...... bestemt programmeringssprog. Noten vil kunne supplere et egentlig undervisningsmateriale, der støtter dig i en bestemt form for programmering i et udvalgt programmeringssprog....

  11. Finnish bioenergy research programme

    Energy Technology Data Exchange (ETDEWEB)

    Asplund, D. [VTT Energy, Jyvaeskylae (Finland)

    1996-12-31

    Finland is a leading country in the use of biofuels and has excellent opportunities to increase the use of biofuels by up to 25-30 %. The Finnish Government has set an objective for the promotion of bioenergy. The aim is to increase the use of bioenergy by about 25 % from the present level by 2005, and the increment corresponds to 1.5 million tonnes of oil equivalent (toe) per year. The R and D work has been considered as an important factor to achieve this ambitious goal. Energy research was organised into a series of research programmes in 1988 in accordance with the proposal of Finnish Energy Research Committee. The object of the research programmes is to enhance research activities and to bundle individual projects together into larger research packages. The common target of the Finnish energy research programmes is to proceed from basic and applied research to product development and pilot operation, and after that to the first commercial applications, e.g. demonstrations. As the organisation of energy research to programmes has led to good results, the Finnish Ministry of Trade and Industry decided to go on with this practice by launching new six-year programmes in 1993-1998. One of these programmes is the Bioenergy Research Programme and the co-ordination of this programme is carried out by VTT Energy. Besides VTT Energy the Finnish Forest Research Institute, Work Efficiency Institute, Metsaeteho and University of Joensuu are participating in the programme 7 refs.

  12. Digital Citizenship

    Science.gov (United States)

    Isman, Aytekin; Canan Gungoren, Ozlem

    2014-01-01

    Era in which we live is known and referred as digital age.In this age technology is rapidly changed and developed. In light of these technological advances in 21st century, schools have the responsibility of training "digital citizen" as well as a good citizen. Digital citizens must have extensive skills, knowledge, Internet and …

  13. DIGITAL FORGERY

    OpenAIRE

    Sarhan M. Musa1

    2017-01-01

    Forgery is the criminal act that provides misleading information about a product or service. It is the process of making, adapting, or imitating documents or objects with the intent to deceive. Digital forgery (or digital tampering) is the process of manipulating documents or images for the intent of financial, social or political gain. This paper provides a brief introduction to the digital forgery.

  14. Can Education Compensate for Society?

    Science.gov (United States)

    Pring, Richard

    2011-01-01

    The extent to which education can compensate for social disadvantage is a matter of political controversy, especially in the context of policies for social mobility. On the one hand, to blame poor achievement on social class or poverty was seen to dodge the professional responsibility of teachers. On the other, the strong correlation between…

  15. Quantitative evaluation of turbulence compensation

    NARCIS (Netherlands)

    Eekeren, A.W.M. van; Schutte, K.; Dijk, J.; Schwering, P.B.W.

    2013-01-01

    A well-known phenomena that diminishes the recognition range in infrared imagery is atmospheric turbulence. In literature many methods are described that try to compensate for the distortions caused by atmospheric turbulence. Most of these methods use a global processing approach in which they

  16. Addressing inadequate compensation | IDRC - International ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    2016-08-12

    Aug 12, 2016 ... Researchers in some projects are using “participatory valuation” processes with communities to help them appraise their lands' value and strengthening procedural protections so they can leverage compensation and benefit sharing. This is one of five cross-cutting issues that have emerged from early ...

  17. Digital preservation

    CERN Document Server

    Deegan, Marilyn

    2013-01-01

    Digital preservation is an issue of huge importance to the library and information profession right now. With the widescale adoption of the internet and the rise of the world wide web, the world has been overwhelmed by digital information. Digital data is being produced on a massive scale by individuals and institutions: some of it is born, lives and dies only in digital form, and it is the potential death of this data, with its impact on the preservation of culture, that is the concern of this book. So how can information professionals try to remedy this? Digital preservation is a complex iss

  18. The Digital Archive Experience

    DEFF Research Database (Denmark)

    Søndergaard, Morten

    2009-01-01

    This article, as well as the book, investigates the ways in which new digital media may enhance the experience of the art-archive. Taken as a whole, the new media is a vital component of a 'transdisciplinary' and transformative field, a cultural landscape that is changing rapidly the conditions....... The book discusses the challenges of the archive and the (art)museum in the age of digital media. It is based upon documentation from a research project, MAP - Media Art Platform, that drew upon the talents and collaboration of many institutions, artists, programmers, art historians, designers and others...... and domains of the archive and the (art)museum. How, then, should the functions and strengths of both archive and museum be shaped to meet those cultural and technological changes? When the Internet and world wide web became 'the place to be' commercially, museums followed suit and established their own sites...

  19. Digital Natives or Digital Tribes?

    Science.gov (United States)

    Watson, Ian Robert

    2013-01-01

    This research builds upon the discourse surrounding digital natives. A literature review into the digital native phenomena was undertaken and found that researchers are beginning to identify the digital native as not one cohesive group but of individuals influenced by other factors. Primary research by means of questionnaire survey of technologies…

  20. Digital Prototyping of Milk Products

    DEFF Research Database (Denmark)

    Frisvad, Jeppe Revall; Nielsen, Otto Højager Attermann; Skytte, Jacob Lercke

    2012-01-01

    an acidification process over time. The challenge is to investigate whether we can use the resulting diffuse reflectance images to measure the static structure factor or similar optical properties of gels. We can see some correlation between measured diffuse reflectance and the rheology of the gel. This indicates...... the extension. This work was (in part) financed by the Centre for Imaging Food Quality project which is funded by the Danish Council for Strategic Research (contract no 09-067039) within the Programme Commission on Health, Food and Welfare. This work was also in part financed by the Digital Prototypes project......Digital prototyping has revolutionised the automotive industry by providing designers and engineers with digital models of their products that enable virtual product design, visualisation, and simulation [1]. However, digital prototyping does not exist in the food industry as the colloidal nature...

  1. Implementation factors affecting the large-scale deployment of digital health and well-being technologies: A qualitative study of the initial phases of the 'Living-It-Up' programme.

    Science.gov (United States)

    Agbakoba, Ruth; McGee-Lennon, Marilyn; Bouamrane, Matt-Mouley; Watson, Nicholas; Mair, Frances S

    2016-12-01

    Little is known about the factors which facilitate or impede the large-scale deployment of health and well-being consumer technologies. The Living-It-Up project is a large-scale digital intervention led by NHS 24, aiming to transform health and well-being services delivery throughout Scotland. We conducted a qualitative study of the factors affecting the implementation and deployment of the Living-It-Up services. We collected a range of data during the initial phase of deployment, including semi-structured interviews (N = 6); participant observation sessions (N = 5) and meetings with key stakeholders (N = 3). We used the Normalisation Process Theory as an explanatory framework to interpret the social processes at play during the initial phases of deployment.Initial findings illustrate that it is clear - and perhaps not surprising - that the size and diversity of the Living-It-Up consortium made implementation processes more complex within a 'multi-stakeholder' environment. To overcome these barriers, there is a need to clearly define roles, tasks and responsibilities among the consortium partners. Furthermore, varying levels of expectations and requirements, as well as diverse cultures and ways of working, must be effectively managed. Factors which facilitated implementation included extensive stakeholder engagement, such as co-design activities, which can contribute to an increased 'buy-in' from users in the long term. An important lesson from the Living-It-Up initiative is that attempting to co-design innovative digital services, but at the same time, recruiting large numbers of users is likely to generate conflicting implementation priorities which hinder - or at least substantially slow down - the effective rollout of services at scale.The deployment of Living-It-Up services is ongoing, but our results to date suggest that - in order to be successful - the roll-out of digital health and well-being technologies at scale requires a delicate and pragmatic trade

  2. Eliminating "Hotspots" in Digital Image Processing

    Science.gov (United States)

    Salomon, P. M.

    1984-01-01

    Signals from defective picture elements rejected. Image processing program for use with charge-coupled device (CCD) or other mosaic imager augmented with algorithm that compensates for common type of electronic defect. Algorithm prevents false interpretation of "hotspots". Used for robotics, image enhancement, image analysis and digital television.

  3. Dynamic neural network-based methods for compensation of nonlinear effects in multimode communication lines

    Science.gov (United States)

    Sidelnikov, O. S.; Redyuk, A. A.; Sygletos, S.

    2017-12-01

    We consider neural network-based schemes of digital signal processing. It is shown that the use of a dynamic neural network-based scheme of signal processing ensures an increase in the optical signal transmission quality in comparison with that provided by other methods for nonlinear distortion compensation.

  4. 22 CFR 96.34 - Compensation.

    Science.gov (United States)

    2010-04-01

    ... Financial and Risk Management § 96.34 Compensation. (a) The agency or person does not compensate any... non-adoption services and discloses to the accrediting entity any corporate or financial arrangements...

  5. High Performance Low Cost Digitally Controlled Power Conversion Technology

    DEFF Research Database (Denmark)

    Jakobsen, Lars Tønnes

    2008-01-01

    suited for digital control schemes involving multiple control loops such as digital control of a switch-mode power supply with several converter stages. Customised digital control solutions implemented in application specific integrated circuits are the best solution for high bandwidth digital control......Digital control of switch-mode power supplies and converters has within the last decade evolved from being an academic subject to an emerging market in the power electronics industry. This development has been pushed mainly by the computer industry that is looking towards digital power management...... of non-isolated DC-DC converters. A customised digital control solution for a voltage mode control scheme should include a digital pulse width modulator which can generate a pulse width modulated signal with high switching frequency and high resolution, a digital compensator with a short execution time...

  6. Channel Effect Compensation in LSF Domain

    Directory of Open Access Journals (Sweden)

    An-Tze Yu

    2003-08-01

    Full Text Available This study addresses the problem of channel effect in the line spectrum frequency (LSF domain. LSF parameters are the popular speech features encoded in the bit stream for low bit-rate speech transmission. A method of channel effect compensation in LSF domain is of interest for robust speech recognition on mobile communication and Internet systems. If the bit error rate in the transmission of digital encoded speech is negligibly low, the channel distortion comes mainly from the microphone or the handset. When the speech signal is represented in terms of the phase of inverse filter derived from LP analysis, this channel distortion can be expressed in terms of the channel phase. Further derivation shows that the mean subtraction performed on the phase of inverse filter can minimize the channel effect. Based on this finding, an iterative algorithm is proposed to remove the bias on LSFs due to channel effect. The experiments on the simulated channel distorted speech and the real telephone speech are conducted to show the effectiveness of our proposed method. The performance of the proposed method is comparable to that of cepstral mean normalization (CMN in using cepstral coefficients.

  7. Federal workers' compensation program basics.

    Science.gov (United States)

    Mallon, Timothy M; Grizzell, Tifani L; Nelson, Cameron J L; Nelson, Cameron L; Hodgson, Michael

    2015-03-01

    Primary health care providers may not be familiar with the Federal Employees' Compensation Act (FECA) and Department of Defense regulations that govern injured workers' rights, benefits, and procedures to follow when an injured employee is seen in the military medical treatment facility. The FECA program was examined and each section reviewed to facilitate provider involvement from time of injury to final disposition of a claim and employee return to work. The best practices in case management are highlighted as well. Several areas of the FECA program require coordination between members of the installation Federal Worker's Compensation team. Areas requiring extensive communication by all team members were emphasized. Successful installation FECA programs engage all members of the FECA team in a collaborative fashion to share information, prevent injuries, and keep costs low.

  8. Frequency Compensation of an Audio Power Amplifier

    NARCIS (Netherlands)

    van der Zee, Ronan A.R.; van Heeswijk, R.

    2006-01-01

    A car audio power amplifier is presented that uses a frequency compensation scheme which avoids large compensation capacitors around the MOS power transistors, while retaining the bandwidth and stable load range of nested miller compensation. THD is 0.005%@(1kHz, 10W), SNR is 108dB, and the

  9. Dynamic Phase Compensation of wind turbines

    DEFF Research Database (Denmark)

    Soerensen, P.; Skaarup, J.; Iov, Florin

    2004-01-01

    This paper describes a dynamic phase compensation unit for a wind turbine with directly connected induction generators. The compensation unit is based on thyristor switched capacitors, where conventional wind turbine compensations use mechanical contactors to switch the capacitors. The unit modules...

  10. 77 FR 4885 - Patent Compensation Board Regulations

    Science.gov (United States)

    2012-02-01

    ... Part 780 RIN 1990-AA33 Patent Compensation Board Regulations AGENCY: Office of the General Counsel... Patent ] Compensation Board regulations to provide that the Secretary of Energy, or a person acting in that position, shall appoint, as needed, a three member panel to serve as the Patent Compensation Board...

  11. 12 CFR 2.5 - Bank compensation.

    Science.gov (United States)

    2010-01-01

    ... compensation in recognition of the role played by its personnel, premises, and good will in credit life... 12 Banks and Banking 1 2010-01-01 2010-01-01 false Bank compensation. 2.5 Section 2.5 Banks and... compensation. (a) Nothing contained in this part prohibits a bank employee, officer, director, or principal...

  12. Personality Differences and Executive Compensation

    OpenAIRE

    Robin L. Bartlett; James H. Grant; Timothy I. Miller

    1990-01-01

    When estimating executive compensation structures econometrically, it is incorrect to ignore an executive's personality type. The problem becomes one of identifying managers and leaders. This study asserts that the key to distinguishing these two types of executives is in their personality types as reflected in their willingness to belong to various kinds of clubs. The authors' findings give new life to the debate over the relative importance of profitability versus sales as determinants of e...

  13. REHABILITATION PRACTICAL PROGRAMME

    Directory of Open Access Journals (Sweden)

    Suzana KRANJC JOLDIKJ

    Full Text Available Centre for Education and Rehabilitation of Physi­cally Handicapped Children and Adolescents Kamnik (Zavod za usposabljanje invalidne mlad­ine Kamnik; hereinafter: ZUIM perform verified or state-ap­proved programme the Rehabilitation practical pro­gramme. The programme is intended for all those young people, who have completed primary school education, but cannot continue regular schooling in secondary school pro­grammes. The programme con­sists of several equivalent parts: education, practical work, train­ing work, health, therapeutic, psychologi­cal, and other activities. For every beginner in the first month of education members of the operative team create an individualized programme, which in­cludes individualized school work, individualized training programme, and other expert activities. The programme can last for 6 years maximum, it can however be completed earlier, when the op­erative team feels the training is no longer neces­sary. Pro­gress of a young person is what matters the most, and if there is no progress, the training is brought to an end. Training of young people in the Rehabilitation practical programme is only the be­ginning. The country will have to start considering social enter­prises, which are found elsewhere in the world, for example in Scandinavian countries and in the USA.

  14. Compensation Techniques in Accelerator Physics

    Energy Technology Data Exchange (ETDEWEB)

    Sayed, Hisham Kamal [Old Dominion Univ., Norfolk, VA (United States)

    2011-05-01

    Accelerator physics is one of the most diverse multidisciplinary fields of physics, wherein the dynamics of particle beams is studied. It takes more than the understanding of basic electromagnetic interactions to be able to predict the beam dynamics, and to be able to develop new techniques to produce, maintain, and deliver high quality beams for different applications. In this work, some basic theory regarding particle beam dynamics in accelerators will be presented. This basic theory, along with applying state of the art techniques in beam dynamics will be used in this dissertation to study and solve accelerator physics problems. Two problems involving compensation are studied in the context of the MEIC (Medium Energy Electron Ion Collider) project at Jefferson Laboratory. Several chromaticity (the energy dependence of the particle tune) compensation methods are evaluated numerically and deployed in a figure eight ring designed for the electrons in the collider. Furthermore, transverse coupling optics have been developed to compensate the coupling introduced by the spin rotators in the MEIC electron ring design.

  15. Vestibular compensation following vestibular neurotomy.

    Science.gov (United States)

    Devèze, A; Montava, M; Lopez, C; Lacour, M; Magnan, J; Borel, L

    2015-09-01

    Four studies assessing vestibular compensation in Menière's disease patients undergoing unilateral vestibular neurotomy, using different analysis methods, are reviewed, with a focus on the different strategies used by patients according to their preoperative sensory preference. Four prospective studies performed in a university tertiary referral center were reviewed, measuring the pattern of vestibular compensation in Menière's disease patients before and after unilateral vestibular neurotomy on various assessment protocols: postural syndrome assessed on static posturography and gait analysis; perceptual syndrome assessed on subjective visual vertical perception; and oculomotor syndrome assessed on ocular cyclotorsion. Vestibular compensation occurred at variable intervals depending on the parameter investigated. Open-eye postural control and gait/walking returned to normal one month after neurotomy. Fine balance analysis found that visual perception of the vertical and ocular cyclotorsion impairment persisted at long-term follow-up. Clinical postural disturbance persisted only when visual afferents were cut off (eyes closed). These impairments were the expression of a postoperative change in postural strategy related to the new use of visual and non-visual references. Understanding pre-operative interindividual variation in balance strategy is critical to screening for postural instability and tailoring vestibular rehabilitation. Copyright © 2015 Elsevier Masson SAS. All rights reserved.

  16. Digital panoramic radiography: a clinical survey

    Energy Technology Data Exchange (ETDEWEB)

    Nessi, R. [Inst. of Radiological Sciences, Univ. of Milan, S. Paolo Hospital (Italy); Minorati, D. [Inst. of Radiological Sciences, Univ. of Milan, S. Paolo Hospital (Italy); Dova, S. [Inst. of Radiological Sciences, Univ. of Milan, S. Paolo Hospital (Italy); Blanc, M. [Inst. of Radiological Sciences, Univ. of Milan, S. Paolo Hospital (Italy)

    1995-12-31

    The application of digital panoramic radiography with photostimulable phosphors to dental diagnosis was evaluated in 500 patients. Comparative intraoral films of selected groups of teeth and electronic magnifications of the same portion of the arches were obtained in 63 cases. Digital images improved the quality of dental examinations compared with film radiographs. The possibility of contrast modulation was helpful to compensate for the different radiographic densities of the arches and to improve the visibility of gingival soft tissues. In addition, digital radiography reduced the radiation dose administered to the patient. (orig.)

  17. Induction motor IFOC based speed-controlled drive with asymptotic disturbance compensation

    Directory of Open Access Journals (Sweden)

    Stojić Đorđe M.

    2012-01-01

    Full Text Available This paper presents the design of digitally controlled speed electrical drive, with the asymptotic compensation of external disturbances, implemented by using the IFOC (Indirect Field Oriented Control torque controlled induction motor. The asymptotic disturbance compensation is achieved by using the DOB (Disturbance Observer with the IMP (Internal Model Principle. When compared to the existing IMP-based DOB solutions, in this paper the robust stability and disturbance compensation are improved by implementing the minimal order DOB filter. Also, the IMP-based DOB design is improved by employing the asymptotic compensation of all elemental or more complex external disturbances. The dynamic model of the IFOC torque electrical drive is, also, included in the speed-controller and DOB section design. The simulation and experimental measurements presented in the paper illustrate the effectiveness and robustness of the proposed control scheme.

  18. 38 CFR 21.3023 - Nonduplication; pension, compensation, and dependency and indemnity compensation.

    Science.gov (United States)

    2010-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 2 2010-07-01 2010-07-01 false Nonduplication; pension, compensation, and dependency and indemnity compensation. 21.3023 Section 21.3023 Pensions, Bonuses, and... Nonduplication; pension, compensation, and dependency and indemnity compensation. (a) Child; age 18. A child who...

  19. Digital Forensics

    OpenAIRE

    Garfinkel, Simson L.

    2013-01-01

    A reprint from American Scientist the magazine of Sigma Xi, The Scientific Research Society Since the 1980s, computers have had increasing roles in all aspects of human life—including an involvement in criminal acts. This development has led to the rise of digital forensics, the uncovering and examination of evidence located on all things electronic with digital storage, including computers, cell phones, and networks. Digital forensics researchers and practitione...

  20. Signatura digital

    OpenAIRE

    Vila Mateos, Carlos

    2011-01-01

    Aquest projecte tracta la Signatura Digital des del punt de vista d'un Enginyer de Software que ha d'iniciar un projecte que doni serveis de Signatura Digital a un projecte més ampli d'Administració Electrònica. El projecte contempla: els conceptes bàsics de la Signatura Digital, les particularitats de la Signatura Digital, les funcionalitats i serveis que pot proporcionar a una plataforma de tramitació electrònica, els requeriments de Signatura Electrònica per l'AE, la selecció d'un prov...

  1. Investigation of FPGA-Based Real-Time Adaptive Digital Pulse Shaping for High-Count-Rate Applications

    Science.gov (United States)

    Saxena, Shefali; Hawari, Ayman I.

    2017-07-01

    Digital signal processing techniques have been widely used in radiation spectrometry to provide improved stability and performance with compact physical size over the traditional analog signal processing. In this paper, field-programmable gate array (FPGA)-based adaptive digital pulse shaping techniques are investigated for real-time signal processing. National Instruments (NI) NI 5761 14-bit, 250-MS/s adaptor module is used for digitizing high-purity germanium (HPGe) detector's preamplifier pulses. Digital pulse processing algorithms are implemented on the NI PXIe-7975R reconfigurable FPGA (Kintex-7) using the LabVIEW FPGA module. Based on the time separation between successive input pulses, the adaptive shaping algorithm selects the optimum shaping parameters (rise time and flattop time of trapezoid-shaping filter) for each incoming signal. A digital Sallen-Key low-pass filter is implemented to enhance signal-to-noise ratio and reduce baseline drifting in trapezoid shaping. A recursive trapezoid-shaping filter algorithm is employed for pole-zero compensation of exponentially decayed (with two-decay constants) preamplifier pulses of an HPGe detector. It allows extraction of pulse height information at the beginning of each pulse, thereby reducing the pulse pileup and increasing throughput. The algorithms for RC-CR2 timing filter, baseline restoration, pile-up rejection, and pulse height determination are digitally implemented for radiation spectroscopy. Traditionally, at high-count-rate conditions, a shorter shaping time is preferred to achieve high throughput, which deteriorates energy resolution. In this paper, experimental results are presented for varying count-rate and pulse shaping conditions. Using adaptive shaping, increased throughput is accepted while preserving the energy resolution observed using the longer shaping times.

  2. Study on Reactive Automatic Compensation System Design

    Science.gov (United States)

    Zhe, Sun; Qingyang, Liang; Peiqing, Luo; Chenfei, Zhang

    At present, low-voltage side of transformer is public in urban distribution network, as inductive load of household appliances is increasing, the power factor decreased, this lead to a large loss of public transformer low voltage side, the supply voltage indicators can not meet user's requirements. Therefore, the design of reactive power compensation system has become another popular research. This paper introduces the principle of reactive power compensation, analyzes key technologies of reactive power compensation, design an overall program of reactive power automatic compensation system to conquer various deficiencies of reactive power automatic compensation equipment.

  3. Digital Offset Calibration of an OPAMP Towards Improving Static Parameters of 90 nm CMOS DAC

    Directory of Open Access Journals (Sweden)

    D. Arbet

    2014-09-01

    Full Text Available In this paper, an on-chip self-calibrated 8-bit R-2R digital-to-analog converter (DAC based on digitally compensated input offset of the operational amplifier (OPAMP is presented. To improve the overall DAC performance, a digital offset cancellation method was used to compensate deviations in the input offset voltage of the OPAMP caused by process variations. The whole DAC as well as offset compensation circuitry were designed in a standard 90 nm CMOS process. The achieved results show that after the self-calibration process, the improvement of 48% in the value of DAC offset error is achieved.

  4. Greek Teachers Programme 2015

    CERN Multimedia

    Hoch, Michael

    2015-01-01

    The 3rd edition of this year's Greek Teachers Programme was co-organized by CERN Education Group and the Hellenic Physical Society and took place from 8 to 12 November 2015. The programme targets physics high-school teachers from all over Greece. It aims to help teachers inspire the next generation of scientists and engineers by motivating their students to understand and appreciate how science works at the world's largest physics laboratory, whereby increasing their interest in pursuing studies in STEM fields in secondary and post-secondary education. 33 teachers took part in this programme which comprised lectures by Greek members of the CERN scientific community, with visits to experimental facilities, hands-on activities and dedicated sessions on effective and creative ways through which participants may bring physics, particle physics and CERN closer to their school classroom. In 2015, more than 100 teachers took part in the three editions of the Greek Teachers Programme.

  5. The VIDA programme

    DEFF Research Database (Denmark)

    Jensen, Bente; Iannone, Rosa Lisa

    This case study describes the VIDA programme (knowledge-based efforts for socially disadvantaged children in daycare), an innovative professional development programme for those working with 3-6-year-old children in Denmark. The case study is part of WP3’s work on ‘Professional Development: Impact...... and Innovation’ within the project ‘Curriculum Quality Analysis and Impact Review of European Education and Care’ (CARE). The programme at the centre of this case builds on theory drawn from research on child development, social disadvantage related to issues of social inequality, and research on organisational...... programme period (2010-2013) and beyond?; 2) What is the impact of the VIDA approach to professional development on i) educators’ practices regarding high quality ECEC (output), ii) child outcomes (outcome), and iii) improved practice at the municipal level (impact in a broader sense)?; and 3) Which factors...

  6. Elukestva õppe programm : Erasmus+

    Index Scriptorium Estoniae

    2014-01-01

    Erasmus+ programm liidab senised koostööprogrammid „Euroopa elukestva õppe programm“, „Euroopa Noored“ ning Euroopa komisjoni rahvusvahelised kõrgharidusprogrammid. Elukestva õppe programmi 2013 kokkuvõte

  7. SPIC Undergraduate Programme

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 3; Issue 12. SPIC Undergraduate Programme. P K Subrahmanyam. Information and Announcements Volume 3 Issue 12 December 1998 pp 108-110. Fulltext. Click here to view fulltext PDF. Permanent link:

  8. Motivation programmes of organizations

    OpenAIRE

    Pízová, Tereza

    2008-01-01

    The Bachelor Thesis "'Motivation Programmes of Organizations" focuses on an extremely important area within personnel management. Employee motivation is crucial to the effective operation of businesses. Motivation programmes assist in increasing and maintaining employee motivation and demonstrate an organization's interest in its employees. This piece is on one hand concerned with theoretical foundations of motivation, describing theories and concepts important to the area of human behaviour ...

  9. The Gold Standard Programme

    DEFF Research Database (Denmark)

    Neumann, Tim; Rasmussen, Mette; Ghith, Nermin

    2013-01-01

    To evaluate the real-life effect of an evidence-based Gold Standard Programme (GSP) for smoking cessation interventions in disadvantaged patients and to identify modifiable factors that consistently produce the highest abstinence rates.......To evaluate the real-life effect of an evidence-based Gold Standard Programme (GSP) for smoking cessation interventions in disadvantaged patients and to identify modifiable factors that consistently produce the highest abstinence rates....

  10. Calm child programme.

    Science.gov (United States)

    Gobrial, Ereny; Raghavan, Raghu

    2017-01-01

    Children with autism spectrum disorder (ASD) and intellectual disabilities (IDs) are more vulnerable to experiencing anxiety disorders. Parental involvement in intervention is crucial for successful management of the interventions in the population of people with ASDs. This article describes the design and evaluation of parenting programme for anxiety disorders in children and young people with ASD and ID. In phase 1 semi-structured interviews were conducted to explore management strategies for anxiety at home and in school settings. A total of 34 participants (14 parents, 20 teachers) participated in the interviews. A Delphi process was conducted with health professionals to develop consensus on appropriate anxiety interventions. In phase 2 the intervention programme was implemented by seven parents who also participated in focus group to evaluate the developed programme. A parental programme, calm child programme (CCP), was developed, implemented and evaluated. The evaluations show significant decrease in children's anxiety as a result of implementing the programme. This study contributes further evidence to parental involvement in interventions for children and young people with ASD and IDs. The CCP is a useful and cost-effective approach in enabling parents to provide anxiety interventions in a home setting.

  11. Optical Doppler tomography based on a field programmable gate array

    DEFF Research Database (Denmark)

    Larsen, Henning Engelbrecht; Nilsson, Ronnie Thorup; Thrane, Lars

    2008-01-01

    We report the design of and results obtained by using a field programmable gate array (FPGA) to digitally process optical Doppler tomography signals. The processor fits into the analog signal path in an existing optical coherence tomography setup. We demonstrate both Doppler frequency and envelope...

  12. Introduction to embedded system design using field programmable gate arrays

    CERN Document Server

    Dubey, Rahul

    2009-01-01

    Offers information on the use of field programmable gate arrays (FPGAs) in the design of embedded systems. This text considers a hypothetical robot controller as an embedded application and weaves around it related concepts of FPGA-based digital design. It is suitable for both students and designers who have worked with microprocessors.

  13. Digital Reading in PISA 2012 and ICT Uses: How Do VET and General Education Students Perform? JRC Science for Policy Report

    Science.gov (United States)

    Dinis da Costa, Patrícia; Araújo, Luísa

    2016-01-01

    The analyses presented in this report indicate that in several Member States (MS) 15-year-old students in vocational-oriented programmes (VET) perform better in digital reading than in print reading in PISA 2012. When differentiated by programme of study--VET versus general education programmes--VET students perform better in digital than in print…

  14. Digital Audiobooks

    DEFF Research Database (Denmark)

    Have, Iben; Pedersen, Birgitte Stougaard

    Audiobooks are rapidly gaining popularity with widely accessible digital downloading and streaming services. The paper is framing how the digital audiobook expands and changes the target groups for book publications and how it as an everyday activity is creating new reading experiences, places...

  15. Digital bioanalysis.

    Science.gov (United States)

    Miller, Elizabeth M; Wheeler, Aaron R

    2009-01-01

    Digital microfluidics has recently emerged as a new paradigm in the world of lab-on-a-chip technology. A wide variety of bioanalyses have been successfully implemented in this format. This paper reviews the various techniques that have been adapted to digital microfluidic systems, and the current state of the field.

  16. Digital TMI

    Science.gov (United States)

    Rios, Joseph

    2012-01-01

    Presenting the current status of the Digital TMI project to visiting members of the FAA Command Center. Digital TMI is an effort to store national-level traffic management initiatives in a standards-compliant manner. Work is funded by the FAA.

  17. Sports Digitalization

    DEFF Research Database (Denmark)

    Xiao, Xiao; Hedman, Jonas; Tan, Felix Ter Chian

    2017-01-01

    Ever since its first manifesto in Greece around 3000 years ago, sports as a field has accumulated a long history with strong traditions while at the same time, gone through tremendous changes toward professionalization and commercialization. The current waves of digitalization have intensified its...... evolution, as digital technologies are increasingly entrenched in a wide range of sporting activities and for applications beyond mere performance enhancement. Despite such trends, research on sports digitalization in the IS discipline is surprisingly still nascent. This paper aims at establishing...... a discourse on sports digitalization within the discipline. Toward this, we first provide an understanding of the institutional Sports Digitalization Thirty Eighth International Conference on Information Systems, Seoul 2017 2 characteristics of the sports industry, establishing its theoretical importance...

  18. Digital displacements

    DEFF Research Database (Denmark)

    Pors, Anja Svejgaard

    2014-01-01

    digital interface. However, the transformation of citizen services from traditional face-to-face interaction to digital self-service gives rise to new practices; some citizens need support to be able to manage self-service through digital tools. A mixture of support and teaching, named co...... digital reforms in Denmark and shows how citizen service is transformed from service to support. The frontline employee’s classical tasks such as casework are being displaced into educational and support-oriented tasks with less professional content. Thus an unintended effect of digitisation is blurred......In recent years digital reforms are being introduced in the municipal landscape of Denmark. The reforms address the interaction between citizen and local authority. The aim is, that by 2015 at least 80 per cent of all correspondence between citizens and public authority will be transmitted through...

  19. Compensator design for corrector magnet power supply of TPS facility

    Science.gov (United States)

    Wong, Y.-S.; Chen, J.-F.; Liu, K.-B.; Liu, C.-Y.; Wang, B.-S.

    2017-10-01

    From 2012 to 2015, Taiwan government has a most important technology project is Taiwan Photon Source (TPS), the total budget of TPS fund to over US300 million. It set up a synchrotron storage ring (electron energy of 3.3 GeV, circumference of 518 m, and low emittance) that provides one of the world's brightest synchrotron sources of x-rays. This study presents a compensator design for corrector magnet power supply to avoid limitations in stabilizing the frequency when the machine output current load is valid. A lead-lag compensator had been built in a full-bridge converter to improve the system bandwidth. Lead-lag compensators influence various disciplines, such as robotics, satellite control, automobile diagnostics, and laser frequency stabilization. These components are important building blocks in analog control systems and can also be used in digital control. A 50V output voltage and 10A output current prototype converter is fabricated in the laboratory. From the experimental results, the effectiveness of the control loop design can be verified from the gain margin and phase margin.

  20. Efficacy of the Danish epilepsy surgery programme

    DEFF Research Database (Denmark)

    Holm, E; Foged, M T; Beniczky, S

    2018-01-01

    OBJECTIVE: Despite optimal medical treatment, approximately one-third of patients with epilepsy continue to have seizures. Epilepsy surgery is widely accepted as a therapeutic option in the selected subset of patients with drug-resistant focal epilepsy. Here, we report the results of the Danish...... epilepsy surgery programme from 2009 to 2014. MATERIAL AND METHODS: A total of 169 consecutive patients, operated at Rigshospitalet, were included. Information was gathered from digital patient records. Before 1-year follow-up, two patients were lost to follow-up and three were referred to new surgery...... lobe after ICR were free of disabling seizures. 12% of MTLE patients developed de novo depression after epilepsy surgery despite good surgical outcome. Three patients required rehabilitation due to post-operative hemiplegia. CONCLUSION: The outcomes of the Danish epilepsy surgery programme align...

  1. The INTEGRAL Core Observing Programme

    DEFF Research Database (Denmark)

    Winkler, C.; Gehrels, N.; Lund, Niels

    1999-01-01

    The Core Programme of the INTEGRAL mission is defined as the portion of the scientific programme covering the guaranteed time observations for the INTEGRAL Science Working Team. This paper describes the current status of the Core Programme preparations and summarizes the key elements...... of the observing programme....

  2. International Oil Pollution Compensation Fund

    Energy Technology Data Exchange (ETDEWEB)

    1979-11-01

    The International Oil Pollution Compensation Fund was established under a 1971 Intergovernmental Maritime Consultative Organization Convention to supplement the 1969 Civil Liability Convention (CLC) under which shipowners were held liable for damage caused by oil spills up to $18 million per incident; the new fund increases the amount payable per incident to $57 million as of April 1979. A further increase up to about $76 million is now under consideration. During 1979, the Fund has been concerned in particular with claims arising out of oil spills in Japan and the Baltic Sea. In the former case, some 540 tons of oil was lost by Miya Maru No. 8 after a collision in March 1979 in the Japanese Inland Sea; cleanup costs and compensation to fishermen were about (pound sterling)400,000. In the latter phase, crude oil apparently coming from the Russian tanker Antonio Gramsci, which grounded off Ventspils in February 1979, drifted across the Baltic and was trapped in or under the ice. After the ice melted, it spread to more than 2000 islands in the Swedish Archipelaso; cleanup measures may result in claims as high as (pound sterling) 8 million.

  3. Digital electronics

    CERN Document Server

    Morris, John

    2013-01-01

    An essential companion to John C Morris's 'Analogue Electronics', this clear and accessible text is designed for electronics students, teachers and enthusiasts who already have a basic understanding of electronics, and who wish to develop their knowledge of digital techniques and applications. Employing a discovery-based approach, the author covers fundamental theory before going on to develop an appreciation of logic networks, integrated circuit applications and analogue-digital conversion. A section on digital fault finding and useful ic data sheets completes th

  4. Digital holography

    CERN Document Server

    Picart, Pascal

    2013-01-01

    This book presents a substantial description of the principles and applications of digital holography.The first part of the book deals with mathematical basics and the linear filtering theory necessary to approach the topic. The next part describes the fundamentals of diffraction theory and exhaustively details the numerical computation of diffracted fields using FFT algorithms. A thorough presentation of the principles of holography and digital holography, including digital color holography, is proposed in the third part.A special section is devoted to the algorithms and method

  5. Digital Leadership

    DEFF Research Database (Denmark)

    Zupancic, Tadeja; Verbeke, Johan; Achten, Henri

    2016-01-01

    . With this paper we intend to initiate a discussion in the eCAADe community to reflect and develop ideas in order to develop digital leadership skills amongst the membership. This paper introduces some important aspects, which may be valuable to look into when developing digital leadership skills.......Leadership is an important quality in organisations. Leadership is needed to introduce change and innovation. In our opinion, in architectural and design practices, the role of leadership has not yet been sufficiently studied, especially when it comes to the role of digital tools and media...

  6. The evolvability of programmable hardware

    Science.gov (United States)

    Raman, Karthik; Wagner, Andreas

    2011-01-01

    In biological systems, individual phenotypes are typically adopted by multiple genotypes. Examples include protein structure phenotypes, where each structure can be adopted by a myriad individual amino acid sequence genotypes. These genotypes form vast connected ‘neutral networks’ in genotype space. The size of such neutral networks endows biological systems not only with robustness to genetic change, but also with the ability to evolve a vast number of novel phenotypes that occur near any one neutral network. Whether technological systems can be designed to have similar properties is poorly understood. Here we ask this question for a class of programmable electronic circuits that compute digital logic functions. The functional flexibility of such circuits is important in many applications, including applications of evolutionary principles to circuit design. The functions they compute are at the heart of all digital computation. We explore a vast space of 1045 logic circuits (‘genotypes’) and 1019 logic functions (‘phenotypes’). We demonstrate that circuits that compute the same logic function are connected in large neutral networks that span circuit space. Their robustness or fault-tolerance varies very widely. The vicinity of each neutral network contains circuits with a broad range of novel functions. Two circuits computing different functions can usually be converted into one another via few changes in their architecture. These observations show that properties important for the evolvability of biological systems exist in a commercially important class of electronic circuitry. They also point to generic ways to generate fault-tolerant, adaptable and evolvable electronic circuitry. PMID:20534598

  7. Digital food photography

    National Research Council Canada - National Science Library

    Manna, Lou; Moss, Bill

    2005-01-01

    ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2 Digital Photography: The Necessities 21 Selecting a Digital Camera and Accessories...

  8. Magnetizing process control for compensation ferrometers

    Science.gov (United States)

    Havránek, Aleš; Zemánek, Ivan

    2017-12-01

    The magnetomotive force (MMF) compensation method is the powerful one for the measurement of open specimen soft magnetic materials parameters at AC magnetization. Although the effective control of the MMF compensation magnetizing process is relatively complicated, the other compensation method properties make this method excellent for precise absolute measurements. Compensation ferrometers (SSTs based on the compensation method) could be improved by more efficient magnetizing process control. This paper deals with the magnetizing process regulator based on the model of the compensation ferrometer magnetizing equipment. The regulator design, its properties, implementation and results of the measurements with described regulator are presented in this paper. The regulator improves the precision of the hysteresis loop measurement by more than ten times. It could be simplified for the IEC method magnetizing equipment.

  9. Digital storytelling to engage postgraduates in reflective practice in ...

    African Journals Online (AJOL)

    The findings established that pedagogical knowledge alone cannot prepare teachers to offer meaningful learning opportunities for all learners. Digital storytelling, however, can be incorporated in teacher training programmes in order to foster a culture of reflective practice for professional development. Keywords: digital ...

  10. Metadata Harvesting in Regional Digital Libraries in the PIONIER Network

    Science.gov (United States)

    Mazurek, Cezary; Stroinski, Maciej; Werla, Marcin; Weglarz, Jan

    2006-01-01

    Purpose: The paper aims to present the concept of the functionality of metadata harvesting for regional digital libraries, based on the OAI-PMH protocol. This functionality is a part of regional digital libraries platform created in Poland. The platform was required to reach one of main objectives of the Polish PIONIER Programme--to enrich the…

  11. Prospective application of advanced series compensation to improve transmission system performance

    Energy Technology Data Exchange (ETDEWEB)

    Gama, C.A.; Scavassa, J.L.; Silva, W.M. da; Silva, J.M.M. da; Ponte, J.R. [ELETRONORTE, Brasilia, DF (Brazil)

    1994-12-31

    This paper describes the main aspects and results of the planning studies undertaken to evaluate the technical benefits of using Thyristor Controlled Series Compensation (TCSC), in a large 500 kV transmission system (Brazilian North-Northeast system). TCSC controllers design and simplified models for digital non-linear time domain simulations are discussed. The proposed controllers are tuned and used to support the comparative analysis between controlled and fixed series compensation. The relevant conclusions concerning this comparison are highlighted. (author) 2 refs., 14 figs., 3 tabs.

  12. External Mobility Programme

    CERN Multimedia

    HR Department

    2007-01-01

    Every year, a significant number of highly-skilled staff members leave the Organization and offer their talents on the European job market. CERN is launching a programme aiming to help staff members to whom the Organization cannot offer an indefinite contract in the transition towards their next employment. The programme, which is based on the establishment of a number of partnerships with potential employers in the private sector, will run on a voluntary basis. Staff members who have received confirmation that they will not be offered an indefinite contract and who are interested in availing themselves of the opportunities offered by the programme, are invited to enrol by following the procedure described at: https://ert.cern.ch/browse_intranet/wd_pds?p_web_page_id=5841 Applications will be processed in the strictest confidence by the Human Resources Department and eligible profiles will then be made available to partner companies for recruitment purposes. Any subsequent ...

  13. Loss Aversion, Stochastic Compensation, and Team Incentives

    OpenAIRE

    大洞, 公平; Murooka, Takeshi

    2013-01-01

    We investigate moral-hazard problems with limited liability where agents have expectation-based reference-dependent preferences. We show that stochastic compensation for low performance can be optimal. Because of loss aversion, the agents have first-order risk aversion to wage uncertainty. This causes the agents to work harder when their low performance is stochastically compensated. We also examine team incentives for credibly employing such stochastic compensation. In an optimal contract, l...

  14. Digital Discretion

    DEFF Research Database (Denmark)

    Busch, Peter Andre; Zinner Henriksen, Helle

    2018-01-01

    discretion is suggested to reduce this footprint by influencing or replacing their discretionary practices using ICT. What is less researched is whether digital discretion can cause changes in public policy outcomes, and under what conditions such changes can occur. Using the concept of public service values......This study reviews 44 peer-reviewed articles on digital discretion published in the period from 1998 to January 2017. Street-level bureaucrats have traditionally had a wide ability to exercise discretion stirring debate since they can add their personal footprint on public policies. Digital......, we suggest that digital discretion can strengthen ethical and democratic values but weaken professional and relational values. Furthermore, we conclude that contextual factors such as considerations made by policy makers on the macro-level and the degree of professionalization of street...

  15. Becoming digital

    DEFF Research Database (Denmark)

    Pors, Anja Svejgaard

    2015-01-01

    . Originality/value: The study contributes to ethnographic research in public administration by combining two separate subfields, e-government and street-level bureaucracy, to discern recent transformations in public service delivery. In the digital era, tasks, control and equality are distributed in ways......The purpose of this paper is to examine the impact of e-government reforms on street-level bureaucrats’ professionalism and relation to citizens, thus demonstrating how the bureaucratic encounter unfolds in the digital era. Design/methodology/approach: The paper is based on an ethnographic study....... An ethnographic account of how digital reforms are implemented in practice shows how street-level bureaucrat’s classic tasks such as specialized casework are being reconfigured into educational tasks that promote the idea of “becoming digital”. In the paper, the author argues that the work of “becoming digital...

  16. Digital Humanities

    DEFF Research Database (Denmark)

    Brügger, Niels

    2016-01-01

    Digital humanities is an umbrella term for theories, methodologies, and practices related to humanities scholarship that use the digital computer as an integrated and essential part of its research and teaching activities. The computer can be used for establishing, finding, collecting......, and preserving material to study, as an object of study in its own right, as an analytical tool, or for collaborating, and for disseminating results. The term "digital humanities" was coined around 2001, and gained currency within academia in the following years. However, computers had been used within...... the humanities for decades, starting with research fields such as humanities computing or computational linguistics in the 1950s, and later new media studies and internet studies. The historical development of digital humanities has been characterized by a focus on three successive, but co-existing types...

  17. Digital Snaps

    DEFF Research Database (Denmark)

    Sandbye, Mette; Larsen, Jonas

    The New Face of Snapshot Photography / Jonas Larsen and Mette Sandbye -- pt. I. IMAGES ON WEB 2.0 AND THE CAMERA PHONE -- ch. 1. Overlooking, Rarely Looking and Not Looking / Martin Lister -- ch. 2. The (Im)mobile Life of Digital Photographs: The Case of Tourist Photography / Jonas Larsen -- ch. 3....... Distance as the New Punctum / Mikko Villi -- pt. II. FAMILY ALBUMS IN TRANSITION -- ch. 4. How Digital Technologies Do Family Snaps, Only Better / Gillian Rose -- ch. 5. Friendship Photography: Memory, Mobility and Social Networking / Joanne Garde-Hansen -- ch. 6. Play, Process and Materiality in Japanese...... Purikura Photography / Mette Sandbye -- ch. 7. 'Buying an Instrument Does Not Necessarily Make You a Musician': Studio Photography and the Digital Revolution / Sigrid Lien -- pt. III. NEW PUBLIC FORMS -- ch. 8 Paparazzi Photography, Seriality and the Digital Photo Archive / Anne Jerslev and Mette Mortensen...

  18. Digital fabrication

    CERN Document Server

    2012-01-01

    The Winter 2012 (vol. 14 no. 3) issue of the Nexus Network Journal features seven original papers dedicated to the theme “Digital Fabrication”. Digital fabrication is changing architecture in fundamental ways in every phase, from concept to artifact. Projects growing out of research in digital fabrication are dependent on software that is entirely surface-oriented in its underlying mathematics. Decisions made during design, prototyping, fabrication and assembly rely on codes, scripts, parameters, operating systems and software, creating the need for teams with multidisciplinary expertise and different skills, from IT to architecture, design, material engineering, and mathematics, among others The papers grew out of a Lisbon symposium hosted by the ISCTE-Instituto Universitario de Lisboa entitled “Digital Fabrication – A State of the Art”. The issue is completed with four other research papers which address different mathematical instruments applied to architecture, including geometric tracing system...

  19. Compensation for industrial injuries and occupational diseases

    Directory of Open Access Journals (Sweden)

    Jana Mervartová

    2011-01-01

    Full Text Available According to the current legislation in the Labour Code the employer’s liability for personal injury resulting from industrial injury or disease is objective, i.e. liability for result. Employer has always an obligation to pay damages if the employer has not liberated himself from no-fault liability. In terms which are explicitly defined by the Labour Code the employer can relieved from fully liability or in part. The injured party is entitled to compensation for loss of earnings and compensation for pain and diminished social capability, and compensation for reasonably incurred expenses related to medical treatment and compensation for damage. Additional compensation is provided in the case of an employee’s death which occurred due to an industrial injury or occupational disease. This may be compensation for reasonable funeral expenses, reimbursement for dependent survivors, one- off compensation for dependents and damage compensation. Each employer now has to pay compulsory insurance against injury. The new law on accident insurance of employees makes the principle of compensation redundant and establishes the principle of insurance. Employers will pay premiums to the Czech Social Security Administration, who will pay allowances from the accident insurance directly to the injured employees. The aim of the new law on accident insurance of employees is to motivate employees to return to work and curb abuse of the insurance. The law should come into effect on 1st January 2013.

  20. Undulator with dynamic compensation of magnetic forces

    Science.gov (United States)

    Gluskin, Efim; Trakhtenberg, Emil; Xu, Joseph Z.

    2016-05-31

    A method and apparatus for implementing dynamic compensation of magnetic forces for undulators are provided. An undulator includes a respective set of magnet arrays, each attached to a strongback, and placed on horizontal slides and positioned parallel relative to each other with a predetermined gap. Magnetic forces are compensated by a set of compensation springs placed along the strongback. The compensation springs are conical springs having exponential-force characteristics that substantially match undulator magnetic forces independently of the predetermined gap. The conical springs are positioned along the length of the magnets.

  1. Computer mathematics for programmers

    CERN Document Server

    Abney, Darrell H; Sibrel, Donald W

    1985-01-01

    Computer Mathematics for Programmers presents the Mathematics that is essential to the computer programmer.The book is comprised of 10 chapters. The first chapter introduces several computer number systems. Chapter 2 shows how to perform arithmetic operations using the number systems introduced in Chapter 1. The third chapter covers the way numbers are stored in computers, how the computer performs arithmetic on real numbers and integers, and how round-off errors are generated in computer programs. Chapter 4 details the use of algorithms and flowcharting as problem-solving tools for computer p

  2. Air Quality Monitoring Programme

    DEFF Research Database (Denmark)

    Kemp, K.; Palmgren, F.

    The Danish Air Quality Monitoring Programme (LMP IV) has been revised in accordance with the Framework Directive and the first three daughter directives of SO2, NOx/NO2, PM10, lead, benzene, CO and ozone. PM10 samplers are under installation and the installation will be completed during 2002....... The PM10 results from 2000 are spares, only TSP are thus included in this report. The data sets for year 2000 is complete for many stations. The monitoring programme consists of 10 stations plus 2 extra stations under the Municipality of Copenhagen. The SO2 and lead levels are still decreasing and far...

  3. Digital Steganography

    OpenAIRE

    KOCIÁNOVÁ, Helena

    2009-01-01

    Digital steganography is a technique for hiding data mostly into multimedia files (images, audio, video). With the development of information technology this technique has found its use in the field of copyright protection and secret data transfer, could be even applied in places where is limited possibility of using cryptography (e. g. by law). This thesis gives insight into digital steganography and contains an application using this technique.

  4. Aplicación de las técnicas de hardware reconfigurable en un sistema digital de control dinámico. Aplicación práctica Parte II; Application of Programmable Hardware Techniques of Digital Control System Development. Workable Application. Second Part

    Directory of Open Access Journals (Sweden)

    Dennis Arce López

    2011-02-01

    Full Text Available Se presenta la aplicación práctica del diseño electrónico en el desarrollo de un sistema de control dinámicode un servomotor lo cual es una novedad científico-técnica en el campo de la energética y en la defensanacional. En el trabajo se expone la funcionalidad y estructura del hardware programable, así como losresultados parciales de la simulación. This paper describes the design of a dynamic control system for servomotor making use of new electronicdevelopment techniques, and represents a novelty on energetic field and national defence. Also describesstructure and functionality of programmable hardware, and partial results of simulation.

  5. Research note: digital divide across borders: a cross-national study of adolescents’ use of digital technologies

    NARCIS (Netherlands)

    Notten, N.; Peter, J.; Kraaykamp, G.; Valkenburg, P.M.

    2009-01-01

    In this study, we analyse digital divides in terms of social inequality in digital access and use patterns from a hierarchical perspective. Using data from the Programme for International Student Assessment (PISA) 2003 in 30 nations, we focus on social cleavages in mid-adolescents’ access and use of

  6. Digital video.

    Science.gov (United States)

    Johnson, Don; Johnson, Mike

    2004-04-01

    The process of digital capture, editing, and archiving video has become an important aspect of documenting arthroscopic surgery. Recording the arthroscopic findings before and after surgery is an essential part of the patient's medical record. The hardware and software has become more reasonable to purchase, but the learning curve to master the software is steep. Digital video is captured at the time of arthroscopy to a hard disk, and written to a CD at the end of the operative procedure. The process of obtaining video of open procedures is more complex. Outside video of the procedure is recorded on digital tape with a digital video camera. The camera must be plugged into a computer to capture the video on the hard disk. Adobe Premiere software is used to edit the video and render the finished video to the hard drive. This finished video is burned onto a CD. We outline the choice of computer hardware and software for the manipulation of digital video. The techniques of backup and archiving the completed projects and files also are outlined. The uses of digital video for education and the formats that can be used in PowerPoint presentations are discussed.

  7. Equalization-enhanced phase noise for coherent-detection systems using electronic digital signal processing.

    Science.gov (United States)

    Shieh, William; Ho, Keang-Po

    2008-09-29

    In coherent optical systems employing electronic digital signal processing, the fiber chromatic dispersion can be gracefully compensated in electronic domain without resorting to optical techniques. Unlike optical dispersion compensator, the electronic equalizer enhances the impairments from the laser phase noise. This equalization-enhanced phase noise (EEPN) imposes a tighter constraint on the receive laser phase noise for transmission systems with high symbol rate and large electronically-compensated chromatic dispersion.

  8. Programmable Baseband Filter for Multistandard Mobile Phones

    DEFF Research Database (Denmark)

    Jensen, Rasmus Glarborg; Christensen, Kåre Tais; Bruun, Erik

    2003-01-01

    of the input transconductor. The entire filter consumes between 2.5 mW and 7.5 mW, depending on the desired noise performance. It is implemented in a standard 0.25 mum CMOS process. A test circuit has been developed and fabricated and measurements show that both the required programmability and the required......This paper describes a channel selection filter for mobile communication systems using a direct down conversion architecture. The filter can be programmed to meet the requirements of different communication standards, including GSM (Global System for Mobile communication), WCDMA (Wideband Code...... Division Multiple Access), and Bluetooth. The filter includes a novel DC offset compensation circuit that combines offset sampling in GSM mode with high pass filtering in WCDMA mode. The filter can be programmed to different noise performance levels by programming the impedance level and power consumption...

  9. 75 FR 32293 - Nonduplication; Pension, Compensation, and Dependency and Indemnity Compensation; Correction

    Science.gov (United States)

    2010-06-08

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF VETERANS AFFAIRS 38 CFR Part 21 Nonduplication; Pension, Compensation, and Dependency and Indemnity Compensation; Correction AGENCY: Department of Veterans Affairs. ACTION: Correcting amendment. SUMMARY: This document...

  10. Accuracy analysis of the zero-order hold model for digital pulsewidth modulation

    DEFF Research Database (Denmark)

    Ma, Junpeng; Wang, Xiongfei; Blaabjerg, Frede

    2017-01-01

    This paper examines the accuracy of the zero-order hold (ZOH) model of the digital pulsewidth modulator (DPWM). The influence of the computational delay on the precision of this equivalent DPWM model is discussed in detail. A compensation method is proposed to compensate the deviation of this DPWM...

  11. Compensating for synaptic loss in Alzheimer's disease.

    Science.gov (United States)

    Abuhassan, Kamal; Coyle, Damien; Belatreche, Ammar; Maguire, Liam

    2014-02-01

    Confirming that synaptic loss is directly related to cognitive deficit in Alzheimer's disease (AD) has been the focus of many studies. Compensation mechanisms counteract synaptic loss and prevent the catastrophic amnesia induced by synaptic loss via maintaining the activity levels of neural circuits. Here we investigate the interplay between various synaptic degeneration and compensation mechanisms, and abnormal cortical oscillations based on a large-scale network model consisting of 100,000 neurons exhibiting several cortical firing patterns, 8.5 million synapses, short-term plasticity, axonal delays and receptor kinetics. The structure of the model is inspired by the anatomy of the cerebral cortex. The results of the modelling study suggest that cortical oscillations respond differently to compensation mechanisms. Local compensation preserves the baseline activity of theta (5-7 Hz) and alpha (8-12 Hz) oscillations whereas delta (1-4 Hz) and beta (13-30 Hz) oscillations are maintained via global compensation. Applying compensation mechanisms independently shows greater effects than combining both compensation mechanisms in one model and applying them in parallel. Consequently, it can be speculated that enhancing local compensation might recover the neural processes and cognitive functions that are associated with theta and alpha oscillations whereas inducing global compensation might contribute to the repair of neural (cognitive) processes which are associated with delta and beta band activity. Compensation mechanisms may vary across cortical regions and the activation of inappropriate compensation mechanism in a particular region may fail to recover network dynamics and/or induce secondary pathological changes in the network.

  12. Computer Programmer/Analyst.

    Science.gov (United States)

    Ohio State Univ., Columbus. Center on Education and Training for Employment.

    This publication contains 25 subjects appropriate for use in a competency list for the occupation of computer programmer/analyst, 1 of 12 occupations within the business/computer technologies cluster. Each unit consists of a number of competencies; a list of competency builders is provided for each competency. Titles of the 25 units are as…

  13. En model for programmer

    DEFF Research Database (Denmark)

    Christensen, Henrik Bærbak

    Dette undervisningsmateriale beskriver en model for, hvordan programmer er opbygget. Materialet er skrevet til brug i det gymnasiale forsøgsfag Informationsteknologi. Seneste version af dette undervisningsmateriale kan findes på http:// www.imhotep.dk. Tak til Elisabeth Husum for en kritisk...

  14. (ARV) treatment training programme

    African Journals Online (AJOL)

    Winnie

    successful ARV programme requires that all components of a functional management system be put in place for effective and efficient functioning.This would include logistics, human resources, financial planning, and monitoring and ..... which service recipients were surveyed on the quality of service delivery noted above.

  15. Progressive Retirement Programme

    CERN Multimedia

    HR Department

    2007-01-01

    Following discussion at the Standing Concertation Committee at its meeting on 30 January 2007, the Director-General has approved the extension of the Progressive Retirement Programme with effect from 1 April 2007 until 31 March 2008. Human Resources Department Tel. 74484/74128

  16. The European Programme Manager

    DEFF Research Database (Denmark)

    Larson, Anne; Bergman, E.; Ehlers, S.

    The publication is a result of a cooperation between organisations in six European countries with the aim to develop a common European education for programme managers. It contains of a description of the different elements of the education together with a number of case-studies from the counties...

  17. The ONTARGET trial programme

    DEFF Research Database (Denmark)

    Unger, Thomas; Kintscher, Ulrich; Kappert, Kai

    2009-01-01

    The ONTARGET trial programme tested the effects of the angiotensin AT1 receptor blocker (ARB), telmisartan, alone or in combination with the angiotensin converting enzyme (ACE) inhibitor, ramipril, in more than 25.000 patients at high cardiovascular risk including diabetes on a combined endpoint...

  18. The Productive Programmer

    CERN Document Server

    Ford, Neal

    2009-01-01

    Anyone who develops software for a living needs a proven way to produce it better, faster, and cheaper. The Productive Programmer offers critical timesaving and productivity tools that you can adopt right away, no matter what platform you use. Master developer Neal Ford details ten valuable practices that will help you elude common traps, improve your code, and become more valuable to your team.

  19. SET-Routes programme

    CERN Multimedia

    Marietta Schupp, EMBL Photolab

    2008-01-01

    Dr Sabine Hentze, specialist in human genetics, giving an Insight Lecture entitled "Human Genetics – Diagnostics, Indications and Ethical Issues" on 23 September 2008 at EMBL Heidelberg. Activities in a achool in Budapest during a visit of Angela Bekesi, Ambassadors for the SET-Routes programme.

  20. cardiovascular disease intervention programme

    African Journals Online (AJOL)

    Changes in smoking during a community-based cardiovascular disease intervention programme. The Coronary Risk Factor Study. H. J. STEENKAMP, P. L. JOOSTE, P. C. J. JORDAAN,. A. S. P. SWANEPOEL, J. E. ROSSOUW. Summary. A prospective anti-smoking clinical trial was conducted as part of a coronary risk factor ...

  1. 38 CFR 3.351 - Special monthly dependency and indemnity compensation, death compensation, pension and spouse's...

    Science.gov (United States)

    2010-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2010-07-01 2010-07-01 false Special monthly dependency and indemnity compensation, death compensation, pension and spouse's compensation ratings. 3.351 Section 3.351 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS ADJUDICATION Pension...

  2. 77 FR 10358 - Investment Adviser Performance Compensation

    Science.gov (United States)

    2012-02-22

    ... COMMISSION 17 CFR Part 275 RIN 3235-AK71 Investment Adviser Performance Compensation AGENCY: Securities and... ``SEC'') is adopting amendments to the rule under the Investment Advisers Act of 1940 that permits investment advisers to charge performance based compensation to ``qualified clients.'' The amendments...

  3. A brief history of dosage compensation

    Indian Academy of Sciences (India)

    ... postulated the origin of the Y chromosome as having resulted from restricted recombination between homologous sex chromosomes in the male and the accumulation of deleterious mutations. This evolutionary process leads to dosage compensation. This article lays out a brief history of dosage compensation in genetics.

  4. 14 CFR 1253.515 - Compensation.

    Science.gov (United States)

    2010-01-01

    ... EDUCATION PROGRAMS OR ACTIVITIES RECEIVING FEDERAL FINANCIAL ASSISTANCE Discrimination on the Basis of Sex in Employment in Education Programs or Activities Prohibited § 1253.515 Compensation. A recipient... rates of pay or other compensation; (b) Results in the payment of wages to employees of one sex at a...

  5. 40 CFR 5.515 - Compensation.

    Science.gov (United States)

    2010-07-01

    ... EDUCATION PROGRAMS OR ACTIVITIES RECEIVING FEDERAL FINANCIAL ASSISTANCE Discrimination on the Basis of Sex in Employment in Education Programs or Activities Prohibited § 5.515 Compensation. A recipient shall... of pay or other compensation; (b) Results in the payment of wages to employees of one sex at a rate...

  6. 15 CFR 8a.515 - Compensation.

    Science.gov (United States)

    2010-01-01

    ... EDUCATION PROGRAMS OR ACTIVITIES RECEIVING FEDERAL FINANCIAL ASSISTANCE Discrimination on the Basis of Sex in Employment in Education Programs or Activities Prohibited § 8a.515 Compensation. A recipient shall... of pay or other compensation; (b) Results in the payment of wages to employees of one sex at a rate...

  7. 31 CFR 28.515 - Compensation.

    Science.gov (United States)

    2010-07-01

    ... SEX IN EDUCATION PROGRAMS OR ACTIVITIES RECEIVING FEDERAL FINANCIAL ASSISTANCE Discrimination on the Basis of Sex in Employment in Education Programs or Activities Prohibited § 28.515 Compensation. A... in rates of pay or other compensation; (b) Results in the payment of wages to employees of one sex at...

  8. 28 CFR 54.515 - Compensation.

    Science.gov (United States)

    2010-07-01

    ... EDUCATION PROGRAMS OR ACTIVITIES RECEIVING FEDERAL FINANCIAL ASSISTANCE Discrimination on the Basis of Sex in Employment in Education Programs or Activities Prohibited § 54.515 Compensation. A recipient shall... of pay or other compensation; (b) Results in the payment of wages to employees of one sex at a rate...

  9. Workers’ Compensation Insurance and Occupational Injuries

    Directory of Open Access Journals (Sweden)

    Ilsoon Shin

    2011-06-01

    Conclusion: Private insurance system, fixed flat rate employers’ funding mechanism, and higher coverage of compensation scheme are significantly and positively correlated with lower level of occupational accidents compared with the public insurance system, risk-based funding system, and lower coverage of compensation scheme.

  10. Compensation Services Advisor | IDRC - International Development ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Job Summary The Compensation Services Advisor is accountable for the effective provision of professional advisory services for a full range of compensation and benefits services, including but not limited to insurance, pension, leave, disability management, and termination benefits to head office and foreign employees ...

  11. Engineering Compensations in Web Service Environment

    DEFF Research Database (Denmark)

    Schäfer, Micahel; Dolog, Peter; Nejdl, Wolfgang

    2007-01-01

    in such an environment occurs, a compensation can be initiated to recover from the failure. However, current environments have only limited capabilities for compensations, and are usually based on backward recovery. In this paper, we introduce an engineering approach and an environment to deal with advanced...

  12. 77 FR 5381 - Plum Pox Compensation

    Science.gov (United States)

    2012-02-03

    ... leaves of susceptible Prunus spp.) from quarantined areas to prevent the spread of plum pox virus (PPV... Animal and Plant Health Inspection Service 7 CFR Part 301 RIN 0579-AD58 Plum Pox Compensation AGENCY...: We are amending the plum pox regulations to provide for the payment of compensation to eligible...

  13. Time-varying phase diversity turbulence compensation

    NARCIS (Netherlands)

    Eekeren, A.W.M. van; Schutte, K.; Dijk, J.; Schwering, P.B.W.

    2011-01-01

    Long range object identification needs visual identification over large distances. However, atmospheric turbulence does hinder long range imaging. Therefore it is crucial to compensate the visual artifacts due to atmospheric turbulence. In this paper we propose a new method to compensate these

  14. 45 CFR 86.54 - Compensation.

    Science.gov (United States)

    2010-10-01

    ... 45 Public Welfare 1 2010-10-01 2010-10-01 false Compensation. 86.54 Section 86.54 Public Welfare DEPARTMENT OF HEALTH AND HUMAN SERVICES GENERAL ADMINISTRATION NONDISCRIMINATION ON THE BASIS OF SEX IN... in Employment in Education Programs or Activities Prohibited § 86.54 Compensation. A recipient shall...

  15. A Novel Wireless and Temperature-Compensated SAW Vibration Sensor

    Directory of Open Access Journals (Sweden)

    Wen Wang

    2014-11-01

    Full Text Available A novel wireless and passive surface acoustic wave (SAW based temperature-compensated vibration sensor utilizing a flexible Y-cut quartz cantilever beam with a relatively substantial proof mass and two one-port resonators is developed. One resonator acts as the sensing device adjacent to the clamped end for maximum strain sensitivity, and the other one is used as the reference located on clamped end for temperature compensation for vibration sensor through the differential approach. Vibration directed to the proof mass flex the cantilever, inducing relative changes in the acoustic propagation characteristics of the SAW travelling along the sensing device, and generated output signal varies in frequency as a function of vibration.  A theoretical mode using the Rayleigh method was established to determine the optimal dimensions of the cantilever beam. Coupling of Modes (COM model was used to extract the optimal design parameters of the SAW devices prior to fabrication. The performance of the developed SAW sensor attached to an antenna towards applied vibration was evaluated wirelessly by using the precise vibration table, programmable incubator chamber, and reader unit.  High vibration sensitivity of ~10.4 kHz/g, good temperature stability, and excellent linearity were observed in the wireless measurements.

  16. The relationship between overjet size and dentoalveolar compensation

    Directory of Open Access Journals (Sweden)

    Soliman Nadia

    2009-01-01

    Full Text Available Background : The purpose of this study was to investigate the effect of overjet size and the dento-alveolar compensation in subjects with normal class I molar relationship. Materials and Methods: Lateral cephalometric head records of 59 Egyptian children (34 boys and 25 girls aged 7.5 to 10.5 years with mean age of 8.69±0.73. All had normal class I type of occlusion. The sample was classified into four quartiles according to the overjet size and the cephalometric analysis was based on seven linear and eight angular measurements using a dental tracer programme. Results: showed that, in spite of presence of high significant over jet size differences between the groups; there was no significant differences in all the studied parameters were found. Applying the least significant differences (LSD test and coefficient correlations between the studied parameters clarifying that there was a significant differences in angular measurements (SN-AB, SN-Occl, I-I, I-ML, I-NB. Conclusion: during transitional dentition there was a sufficient dento-alveolar adaptation to growth changes in the saggittal jaw relation ship to attain normal class I type of occlusion. This compensation is pronounced in angular parameters and clustered in the lower arches particularly in incisal area.

  17. Digital evidence

    Directory of Open Access Journals (Sweden)

    Lukić Tatjana

    2012-01-01

    Full Text Available Although computer makes human activities faster and easier, innovating and creating new forms of work and other kinds of activities, it also influenced the criminal activity. The development of information technology directly affects the development of computer forensics without which, it can not even imagine the discovering and proving the computer offences and apprehending the perpetrator. Information technology and computer forensic allows us to detect and prove the crimes committed by computer and capture the perpetrators. Computer forensics is a type of forensics which can be defined as a process of collecting, preserving, analyzing and presenting digital evidence in court proceedings. Bearing in mind, that combat against crime, in which computers appear as an asset or object of the offense, requires knowledge of digital evidence as well as specific rules and procedures, the author in this article specifically addresses the issues of digital evidence, forensic (computer investigation, specific rules and procedures for detecting, fixing and collecting digital evidence and use of this type of evidence in criminal proceedings. The author also delas with international standards regarding digital evidence and cyber-space investigation.

  18. Digital watermark

    Directory of Open Access Journals (Sweden)

    Jasna Maver

    2000-01-01

    Full Text Available The huge amount of multimedia contents available on the World-Wide-Web is beginning to raise the question of their protection. Digital watermarking is a technique which can serve various purposes, including intellectual property protection, authentication and integrity verification, as well as visible or invisible content labelling of multimedia content. Due to the diversity of digital watermarking applicability, there are many different techniques, which can be categorised according to different criteria. A digital watermark can be categorised as visible or invisible and as robust or fragile. In contrast to the visible watermark where a visible pattern or image is embedded into the original image, the invisible watermark does not change the visual appearance of the image. The existence of such a watermark can be determined only through a watermark ex¬traction or detection algorithm. The robust watermark is used for copyright protection, while the fragile watermark is designed for authentication and integrity verification of multimedia content. A watermark must be detectable or extractable to be useful. In some watermarking schemes, a watermark can be extracted in its exact form, in other cases, we can detect only whether a specific given watermarking signal is present in an image. Digital libraries, through which cultural institutions will make multimedia contents available, should support a wide range of service models for intellectual property protection, where digital watermarking may play an important role.

  19. Ownership Concentration, Top Management and Board Compensation

    Directory of Open Access Journals (Sweden)

    Marcos Barbosa Pinto

    2013-05-01

    Full Text Available The degree of ownership concentration may influence executive and board compensation (Bebchuk & Fried, 2003. This article analyzes this relationship. Detailed information about top management and board compensation became available starting in 2010 through new Securities Commission filings. Linear regression models applied to a sample of 315 Brazilian companies traded on the national exchange indicate a negative and statistically significant economic correlation between executive compensation and the degree of ownership concentration. Ceteris paribus, companies with a lower degree of ownership concentration pay higher compensation to top executives. Family controlled companies pay more to their chief executive, but not to the managerial team as a whole, and the compensation of directors increases with a greater proportion of control group members or their relatives on the board. There was support for the Managerial Power Hypothesis in companies with a lower degree of ownership concentration and for the extraction of private benefits in companies where it is greater.

  20. Compensation of Disadvantages in University Examination Procedures

    Directory of Open Access Journals (Sweden)

    Ulrike Quapp

    2016-08-01

    Full Text Available Active social participation of disabled people is one of the major tasks of modern society. That also includes access to the academic community by higher education. Universities all over the world work hard to give handicapped students a chance to graduate. In this context, compensation of disadvantages in examination procedures is an important matter. But, also chronic illness may impair the student's examination performance. To ensure equal examination opportunities for all students, responsible university officials must be creative to find individual compensation solutions. The paper analyzes examination regulations at universities in different countries and offers solutions to compensate disabled and chronic ill students' disadvantages. It discusses the necessity of compensation for different types of disability and chronic illness. Finally, an overview of current German case law and solutions for compensation problems are provided.

  1. Comprehensive Monitor-Oriented Compensation Programming

    Directory of Open Access Journals (Sweden)

    Christian Colombo

    2014-04-01

    Full Text Available Compensation programming is typically used in the programming of web service compositions whose correct implementation is crucial due to their handling of security-critical activities such as financial transactions. While traditional exception handling depends on the state of the system at the moment of failure, compensation programming is significantly more challenging and dynamic because it is dependent on the runtime execution flow — with the history of behaviour of the system at the moment of failure affecting how to apply compensation. To address this dynamic element, we propose the use of runtime monitors to facilitate compensation programming, with monitors enabling the modeller to be able to implicitly reason in terms of the runtime control flow, thus separating the concerns of system building and compensation modelling. Our approach is instantiated into an architecture and shown to be applicable to a case study.

  2. Mammographic screening programmes in Europe

    DEFF Research Database (Denmark)

    Giordano, Livia; von Karsa, Lawrence; Tomatis, Mariano

    2012-01-01

    To summarize participation and coverage rates in population mammographic screening programmes for breast cancer in Europe.......To summarize participation and coverage rates in population mammographic screening programmes for breast cancer in Europe....

  3. Digital Creativity

    DEFF Research Database (Denmark)

    Petersson Brooks, Eva; Brooks, Anthony Lewis

    2014-01-01

    This paper reports on a study exploring the outcomes from children’s play with technology in early childhood learning practices. The paper addresses questions related to how digital technology can foster creativity in early childhood learning environments. It consists of an analysis of children......’s interaction with the KidSmart furniture focusing on digital creativity potentials and play values suggested by the technology. The study applied a qualitative approach and included125 children (aged three to five), 10 pedagogues, and two librarians. The results suggests that educators should sensitively...... consider intervening when children are interacting with technology, and rather put emphasize into the integration of the technology into the environment and to the curriculum in order to shape playful structures for children’s digital creativity....

  4. Digital "X"

    DEFF Research Database (Denmark)

    Baiyere, Abayomi; Grover, Varun; Gupta, Alok

    2017-01-01

    Interest in using digital before existing research concepts seem to be on the rise in the IS field. This panel is positioned to explore what value lies in labelling our research as digital “x” as opposed to the well established IT “x” (where “x” can be strategy, infrastructure, innovation, artifact......, capability e.t.c). The question this raises is that of how much this contributes novel insight to IS scholarship versus how much this is merely a relabeling of old wines in new wine bottles. The panel is expected to provide conceptual clarity on the use of the digital “x” concept and provide a delineation...

  5. Digital Relationships

    DEFF Research Database (Denmark)

    Ledborg Hansen, Richard

    -­‐Jones, 2011) for increases in effectiveness and efficiency we indiscriminately embrace digital communication and digitized information dissemination with enthusiasm – at the risk of ignoring the potentially dark side of technology. However, technology also holds a promise for better understanding precisely...... of residual deposits from technology in organizations and its effect on individuals ability to connect to one another. Based on the case study the paper describes indications and suggests potential implication hereof. Given the inherent enhancement possibilities of technology our expectation for entertainment......-­rich information and highly interesting communication are sky-­high and rising. With a continuous increase in digitized communication follows a decrease in face-­to-­face encounters and our ability to engage in inter-­personal relationships are suffering for it (Davis, 2013). The behavior described in this paper...

  6. Evaluation of RugbySmart: a rugby union community injury prevention programme.

    Science.gov (United States)

    Gianotti, Simon M; Quarrie, Ken L; Hume, Patria A

    2009-05-01

    RugbySmart, a rugby union injury prevention programme, was launched in New Zealand in 2001. It was compulsory for all coaches and referees to complete RugbySmart requirements annually in order to continue coaching or refereeing. After 5 years of implementation the programme partners, Accident Compensation Corporation and New Zealand Rugby Union, evaluated RugbySmart to determine its effectiveness in reducing injuries. The purpose was to evaluate the effect of RugbySmart on reducing injury rates per 100,000 players and resulting injury prevention behaviours. The RugbySmart programme was associated with a decrease in injury claims per 100,000 players in most areas the programme targeted; the programme had negligible impact on non-targeted injury sites. The decrease in injury claims numbers was supported by results from the player behaviour surveys pre- and post-RugbySmart. There was an increase in safe behaviour in the contact situations of tackle, scrum and ruck technique.

  7. Digital Radiography

    Science.gov (United States)

    1986-01-01

    System One, a digital radiography system, incorporates a reusable image medium (RIM) which retains an image. No film is needed; the RIM is read with a laser scanner, and the information is used to produce a digital image on an image processor. The image is stored on an optical disc. System allows the radiologist to "dial away" unwanted images to compare views on three screens. It is compatible with existing equipment and cost efficient. It was commercialized by a Stanford researcher from energy selective technology developed under a NASA grant.

  8. Digital communication

    CERN Document Server

    Das, Apurba

    2010-01-01

    ""Digital Communications"" presents the theory and application of the philosophy of Digital Communication systems in a unique but lucid form. This book inserts equal importance to the theory and application aspect of the subject whereby the authors selected a wide class of problems. The Salient features of the book are: the foundation of Fourier series, Transform and wavelets are introduces in a unique way but in lucid language; the application area is rich and resemblance to the present trend of research, as we are attached with those areas professionally; a CD is included which contains code

  9. Digital literacies

    CERN Document Server

    Hockly, Nicky; Pegrum, Mark

    2014-01-01

    Dramatic shifts in our communication landscape have made it crucial for language teaching to go beyond print literacy and encompass the digital literacies which are increasingly central to learners' personal, social, educational and professional lives. By situating these digital literacies within a clear theoretical framework, this book provides educators and students alike with not just the background for a deeper understanding of these key 21st-century skills, but also the rationale for integrating these skills into classroom practice. This is the first methodology book to address not jus

  10. Digital filters

    CERN Document Server

    Hamming, Richard W

    1997-01-01

    Digital signals occur in an increasing number of applications: in telephone communications; in radio, television, and stereo sound systems; and in spacecraft transmissions, to name just a few. This introductory text examines digital filtering, the processes of smoothing, predicting, differentiating, integrating, and separating signals, as well as the removal of noise from a signal. The processes bear particular relevance to computer applications, one of the focuses of this book.Readers will find Hamming's analysis accessible and engaging, in recognition of the fact that many people with the s

  11. Digital photogrammetry

    CERN Document Server

    Egels, Yves

    2003-01-01

    Photogrammetry is the use of photography for surveying primarily and is used for the production of maps from aerial photographs. Along with remote sensing, it represents the primary means of generating data for Geographic Information Systems (GIS). As technology develops, it is becoming easier to gain access to it. The cost of digital photogrammetric workstations are falling quickly and these new tools are therefore becoming accessible to more and more users. Digital Photogrammetry is particularly useful as a text for graduate students in geomantic and is also suitable for people with a good basic scientific knowledge who need to understand photogrammetry, and who wish to use the book as a reference.

  12. Companies' requirements on graduates - programmers

    OpenAIRE

    Urx, Martin

    2009-01-01

    The thesis maps different types of programmers and what are demands on programmers from employees. It analysis both technical skills and also soft-skills and their importance when evaluating a programmer. The thesis also contains an analysis of IT education offered by selected universities and high schools. The data are gathered through questionnaires and their results are confronted with the study options.

  13. Compensation following bilateral vestibular damage

    Directory of Open Access Journals (Sweden)

    Bill J Yates

    2011-12-01

    Full Text Available Bilateral loss of vestibular inputs affects far fewer patients than unilateral inner ear damage, and thus has been understudied. In both animal subjects and human patients, bilateral vestibular hypofunction (BVH produces a variety of clinical problems, including impaired balance control, inability to maintain stable blood pressure during postural changes, difficulty in visual targeting of images, and disturbances in spatial memory and navigational performance. Experiments in animals have shown that nonlabyrinthine inputs to the vestibular nuclei are rapidly amplified following the onset of BVH, which may explain the recovery of postural stability and orthostatic tolerance that occurs within 10 days. However, the loss of the vestibulo-ocular reflex and degraded spatial cognition appear to be permanent in animals with BVH. Current concepts of the compensatory mechanisms in humans with BVH are largely inferential, as there is a lack of data from patients early in the disease process. Translation of animal studies of compensation for BVH into therapeutic strategies and subsequent application in the clinic is the most likely route to improve treatment. In addition to physical therapy, two types of prosthetic devices have been proposed to treat individuals with bilateral loss of vestibular inputs: those that provide tactile stimulation to indicate body position in space, and those that deliver electrical stimuli to branches of the vestibular nerve in accordance with head movements. The relative efficacy of these two treatment paradigms, and whether they can be combined to facilitate recovery, is yet to be ascertained.

  14. Compensation following bilateral vestibular damage.

    Science.gov (United States)

    McCall, Andrew A; Yates, Bill J

    2011-01-01

    Bilateral loss of vestibular inputs affects far fewer patients than unilateral inner ear damage, and thus has been understudied. In both animal subjects and human patients, bilateral vestibular hypofunction (BVH) produces a variety of clinical problems, including impaired balance control, inability to maintain stable blood pressure during postural changes, difficulty in visual targeting of images, and disturbances in spatial memory and navigational performance. Experiments in animals have shown that non-labyrinthine inputs to the vestibular nuclei are rapidly amplified following the onset of BVH, which may explain the recovery of postural stability and orthostatic tolerance that occurs within 10 days. However, the loss of the vestibulo-ocular reflex and degraded spatial cognition appear to be permanent in animals with BVH. Current concepts of the compensatory mechanisms in humans with BVH are largely inferential, as there is a lack of data from patients early in the disease process. Translation of animal studies of compensation for BVH into therapeutic strategies and subsequent application in the clinic is the most likely route to improve treatment. In addition to physical therapy, two types of prosthetic devices have been proposed to treat individuals with bilateral loss of vestibular inputs: those that provide tactile stimulation to indicate body position in space, and those that deliver electrical stimuli to branches of the vestibular nerve in accordance with head movements. The relative efficacy of these two treatment paradigms, and whether they can be combined to facilitate recovery, is yet to be ascertained.

  15. Pharmacovigilance programme of India

    Directory of Open Access Journals (Sweden)

    Kalaiselvan Vivekanandan

    2012-01-01

    Full Text Available The monitoring and reporting of adverse drug reactions (ADRs through pharmacovigilance is vital to patient safety and rational prescribing. In India, Central Drugs Standard Control Organization (CDSCO initiated Pharmacovigilance Programme of India (PvPI to report ADRs through ADRs monitoring centres in India. Indian Pharmacopoeia Commission (IPC is functioning as National Coordination Centre (NCC for PvPI. The ADRs are reported to NCC through VigiFlow by various centres are evaluated and committed to Uppsala Monitoring Centre, Sweden. The potential benefit of the PvPI is aimed to reducing or eliminating a harm of medicine. Continuous efforts of the healthcare professionals and the patients are expected to make this as one of the most successful and effective programmes. The present article updates the status and future plan of PvPI.

  16. Static compensator: comparison between computer simulations and field tests; Compensador estatico: comparacao entre simulacoes computacionais e ensaios de campo

    Energy Technology Data Exchange (ETDEWEB)

    Rose, E.H.; Geraldes Filho, W. [ELETRONORTE, Belem, PA (Brazil); Honda, J.T. [Main Engenharia (Brazil); Vendramini, P.M. [Asea Brown Boveri, SP (Brazil)

    1991-12-31

    This work aims to present the comparison between the obtained results in field tests, performed during the assemblage of the static compensator of Coxipo power substation (-50/+70 Mvar), and the results obtained with the digital model developed in EMTP (Electromagnetic Transient Program). 2 refs., 10 figs.

  17. The Mathematica programmer

    CERN Document Server

    Maeder, Roman E

    1994-01-01

    The Mathematica Programmer covers the fundamental programming paradigms and applications of programming languages. This book is organized into two parts encompassing 10 chapters. Part 1 begins with an overview of the programming paradigms. This part also treats abstract data types, polymorphism and message passing, object-oriented programming, and relational databases. Part 2 looks into the practical aspects of programming languages, including in lists and power series, fractal curves, and minimal surfaces.This book will prove useful to mathematicians and computer scientists.

  18. Punch card programmable microfluidics.

    Directory of Open Access Journals (Sweden)

    George Korir

    Full Text Available Small volume fluid handling in single and multiphase microfluidics provides a promising strategy for efficient bio-chemical assays, low-cost point-of-care diagnostics and new approaches to scientific discoveries. However multiple barriers exist towards low-cost field deployment of programmable microfluidics. Incorporating multiple pumps, mixers and discrete valve based control of nanoliter fluids and droplets in an integrated, programmable manner without additional required external components has remained elusive. Combining the idea of punch card programming with arbitrary fluid control, here we describe a self-contained, hand-crank powered, multiplex and robust programmable microfluidic platform. A paper tape encodes information as a series of punched holes. A mechanical reader/actuator reads these paper tapes and correspondingly executes operations onto a microfluidic chip coupled to the platform in a plug-and-play fashion. Enabled by the complexity of codes that can be represented by a series of holes in punched paper tapes, we demonstrate independent control of 15 on-chip pumps with enhanced mixing, normally-closed valves and a novel on-demand impact-based droplet generator. We demonstrate robustness of operation by encoding a string of characters representing the word "PUNCHCARD MICROFLUIDICS" using the droplet generator. Multiplexing is demonstrated by implementing an example colorimetric water quality assays for pH, ammonia, nitrite and nitrate content in different water samples. With its portable and robust design, low cost and ease-of-use, we envision punch card programmable microfluidics will bring complex control of microfluidic chips into field-based applications in low-resource settings and in the hands of children around the world.

  19. Programme driven music radio

    OpenAIRE

    Hayes, Conor; Cunningham, Padraig; Clerkin, Patrick; Grimaldi, Marco

    2002-01-01

    This paper describes the operation of and research behind a networked application for the delivery of personalised streams of music at Trinity College Dublin. Smart Radio is a web based client-server application that uses streaming audio technology and recommendation techniques to allow users build, manage and share music programmes. While it is generally acknowledged that music distribution over the web will dramatically change how the music industry operates, there are ...

  20. A new video programme

    CERN Multimedia

    CERN video productions

    2011-01-01

    "What's new @ CERN?", a new monthly video programme, will be broadcast on the Monday of every month on webcast.cern.ch. Aimed at the general public, the programme will cover the latest CERN news, with guests and explanatory features. Tune in on Monday 3 October at 4 pm (CET) to see the programme in English, and then at 4:20 pm (CET) for the French version.   var flash_video_player=get_video_player_path(); insert_player_for_external('Video/Public/Movies/2011/CERN-MOVIE-2011-129/CERN-MOVIE-2011-129-0753-kbps-640x360-25-fps-audio-64-kbps-44-kHz-stereo', 'mms://mediastream.cern.ch/MediaArchive/Video/Public/Movies/2011/CERN-MOVIE-2011-129/CERN-MOVIE-2011-129-Multirate-200-to-753-kbps-640x360-25-fps.wmv', 'false', 480, 360, 'https://mediastream.cern.ch/MediaArchive/Video/Public/Movies/2011/CERN-MOVIE-2011-129/CERN-MOVIE-2011-129-posterframe-640x360-at-10-percent.jpg', '1383406', true, 'Video/Public/Movies/2011/CERN-MOVIE-2011-129/CERN-MOVIE-2011-129-0600-kbps-maxH-360-25-fps-...

  1. Digital books.

    Science.gov (United States)

    Wink, Diane M

    2011-01-01

    In this bimonthly series, the author examines how nurse educators can use the Internet and Web-based computer technologies such as search, communication, and collaborative writing tools; social networking and social bookmarking sites; virtual worlds; and Web-based teaching and learning programs. This article describes digital books.

  2. Digital Methods

    NARCIS (Netherlands)

    Rogers, R.

    2013-01-01

    In Digital Methods, Richard Rogers proposes a methodological outlook for social and cultural scholarly research on the Web that seeks to move Internet research beyond the study of online culture. It is not a toolkit for Internet research, or operating instructions for a software package; it deals

  3. Digital Forensics

    Science.gov (United States)

    Harron, Jason; Langdon, John; Gonzalez, Jennifer; Cater, Scott

    2017-01-01

    The term forensic science may evoke thoughts of blood-spatter analysis, DNA testing, and identifying molds, spores, and larvae. A growing part of this field, however, is that of digital forensics, involving techniques with clear connections to math and physics. This article describes a five-part project involving smartphones and the investigation…

  4. Digital Badges

    Science.gov (United States)

    Frederiksen, Linda

    2013-01-01

    Unlike so much of the current vocabulary in education and technology that seems to stir more confusion than clarity, most public service librarians may already have a general idea about digital badges. As visual representations of individual accomplishments, competencies or skills that are awarded by groups, institutions, or organizations, they…

  5. Sports Digitalization

    DEFF Research Database (Denmark)

    Xiao, Xiao; Hedman, Jonas; Tan, Felix Ter Chian

    2017-01-01

    Ever since its first manifesto in Greece around 3000 years ago, sports as a field has accumulated a long history with strong traditions while at the same time, gone through tremendous changes toward professionalization and commercialization. The current waves of digitalization have intensified it...

  6. Digital forvaltning

    DEFF Research Database (Denmark)

    Remmen, Arne; Larsen, Torben; Mosgaard, Mette

    2004-01-01

    Større effektivitet, bedre service og mere demokrai er blot nogle af forventningerne til indførelse af digital forveltning i kommunerne. Kapitlet giver bland andet svar på spørgsmålene : Hvordan lever kommunerne op hertil i dagligdagen? hvilke virkemidler anvender de? Hvilke barrierer har der været...

  7. Digital Disruption

    DEFF Research Database (Denmark)

    Rosenstand, Claus Andreas Foss

    det digitale domæne ud over det niveau, der kendetegner den nuværende debat, så præsenteres der ny viden om digital disruption. Som noget nyt udlægges Clayton Christens teori om disruptiv innovation med et særligt fokus på små organisationers mulighed for eksponentiel vækst. Specielt udfoldes...... forholdet mellem disruption og den stadig accelererende digitale udvikling i konturerne til ny teoridannelse om digital disruption. Bogens undertitel ”faretruende og fascinerende forandringer” peger på, at der er behov for en nuanceret debat om digital disruption i modsætning til den tone, der er slået an i...... videre kalder et ”disruption-råd”. Faktisk er rådet skrevet ind i 2016 regeringsgrundlaget for VLK-regeringen. Disruption af organisationer er ikke et nyt fænomen; men hastigheden, hvormed det sker, er stadig accelererende. Årsagen er den globale mega-trend: Digitalisering. Og derfor er specielt digital...

  8. Digital Humanities and networked digital media

    Directory of Open Access Journals (Sweden)

    Niels Ole Finnemann

    2014-10-01

    Full Text Available This article discusses digital humanities and the growing diversity of digital media, digital materials and digital methods. The first section describes the humanities computing tradition formed around the interpretation of computation as a rule-based process connected to a concept of digital materials centred on the digitisation of non-digital, finite works, corpora and oeuvres. The second section discusses “the big tent” of contemporary digital humanities. It is argued that there can be no unifying interpretation of digital humanities above the level of studying digital materials with the help of software-supported methods. This is so, in part, because of the complexity of the world and, in part, because digital media remain open to the projection of new epistemologies onto the functional architecture of these media. The third section discusses the heterogeneous character of digital materials and proposes that the study of digital materials should be established as a field in its own right.

  9. Digital Humanities and networked digital media

    Directory of Open Access Journals (Sweden)

    Niels Ole Finnemann

    2014-12-01

    Full Text Available This article discusses digital humanities and the growing diversity of digital media, digital materials and digital methods. The first section describes the humanities computing tradition formed around the interpretation of computation as a rule-based process connected to a concept of digital materials centred on the digitisation of non-digital, finite works, corpora and oeuvres. The second section discusses “the big tent” of contemporary digital humanities. It is argued that there can be no unifying interpretation of digital humanities above the level of studying digital materials with the help of software-supported methods. This is so, in part, because of the complexity of the world and, in part, because digital media remain open to the projection of new epistemologies onto the functional architecture of these media. The third section discusses the heterogeneous character of digital materials and proposes that the study of digital materials should be established as a field in its own right.

  10. Compensator configurations for load currents' symmetrization

    Science.gov (United States)

    Rusinaru, D.; Manescu, L. G.; Dinu, R. C.

    2016-02-01

    This paper approaches aspects regarding the mitigation effects of asymmetries in 3-phase 3-wire networks. The measure consisting in connecting of load current symmetrization devices at the load coupling point is presented. A time-variation of compensators parameters is determined as a function of the time-recorded electrical values. The general sizing principle of the load current symmetrization reactive components is based on a simple equivalent model of the unbalanced 3-phase loads. By using these compensators a certain control of the power components transits is ensured in the network. The control is based on the variations laws of the compensators parameters as functions of the recorded electrical values: [B] = [T]·[M]. The link between compensator parameters and measured values is ensured by a transformation matrix [T] for each operation conditions of the supply network. Additional conditions for improving of energy and efficiency performance of the compensator are considered: i.e. reactive power compensation. The compensator sizing algorithm was implemented into a MATLAB environment software, which generate the time-evolution of the parameters of load current symmetrization device. The input data of application takes into account time-recording of the electrical values. By using the compensator sizing software, some results were achieved for the case of a consumer connected at 20 kV busbar of a distribution substation, during 24 hours measurement session. Even the sizing of the compensators aimed some additional network operation aspects (power factor correction) correlated with the total or major load symmetrizations, the harmonics aspects of the network values were neglected.

  11. 38 CFR 3.708 - Federal Employees' Compensation.

    Science.gov (United States)

    2010-07-01

    ... ADJUDICATION Pension, Compensation, and Dependency and Indemnity Compensation Concurrent Benefits and Elections..., hospitalization or hospital care, training, or compensated work therapy program. See §§ 3.358 and 3.361. (b...

  12. The Digital North Denmark Programme -Promoting Regional Change?

    DEFF Research Database (Denmark)

    Østergaard, Christian Richter

    2007-01-01

    (Dybkjær and Lindegaard, 1999, p.96-100). The declared approach was to build on the existing competencies in industry as well as at universities. The national government chose two regions – Ørestaden, a new concentration of knowledge-based institutions near Copenhagen Airport, and North Jutland...... of development perspectives for the regional ICT sector will focus on the participation of the university and the cluster....

  13. Compensation of optical system distortion and image perspective deformations for the projection lens

    Science.gov (United States)

    Burtseva, Anastasiia A.; Ezhova, Kseniia V.; Trifanov, Oleg V.

    2017-06-01

    In the article takes up the possibility of optical system distortion compensation for projection lens by making predistortions into projected digital image. Image processing is producing for main types of optical system distortion, which can be described both as power polynomial and as Zernike polynomials. Special attention is given for perspective deformations which arise in the deviation of the optical axis from perpendicular to the plane of projection. In processing takes into account both as horizontal and as vertical perspective deformation. For possibility of optical system distortion compensation there is a need to provisional certification of lens by Abbe grid for taking polynomial description of distortion. According to certification results performed image processing on the points corresponding to the nodes of the grid Abbe. As a result of processing a digital image deformations introduced, the reverse occurring when deformations are projecting. Pre-made image deformations allow to compensate for distortion of optical system and the perspective deformation caused by the projection lens used, therefore, when projecting the image will largely corresponds to the original image. The results of the work is planning to use in the preparation of digital image mapping show, namely the projection on objects of complex geometric shapes.

  14. Generation of picosecond optical pulse based on chirp compensation

    Science.gov (United States)

    Sun, Xiaofeng; Yang, Jiaqian; Li, Shangyuan; Xue, Xiaoxiao; Zheng, Xiaoping; Zhou, Bingkun

    2017-10-01

    Picosecond optical pulses are widely used in optical communication systems, such as the optical time division multiplexing (OTDM) and photonic analog-to-digital converter (ADC). We have proposed and demonstrated a simple method to generate picosecond optical pulse using the mach-zehnder modulator (MZM), phase modulator (PM) and single model fiber (SMF). The phase modulator is used to generate a frequency chirp which varies periodically with time. The MZM is used to suppress the pedestal of the pulse and improve the performance of the pulse. The SMF is used to compensate the frequency chirp. We have carried out theoretical analysis and numerical simulation for the generation process of the picosecond optical pulse. The influence of phase shift between the modulation signals loaded on the MZM and PM is analyzed by numerical simulation and the conditions for the generation of picosecond optical pulse are given. The formula for calculating the optimum length of SMF which is used to compensate the linear chirp is given. The optical pulses with a repetition frequency of 10 GHz and a pulse width of 8.5 ps were obtained. The time-bandwidth product was as small as 1.09 and the timing jitter is as low as 83 fs.

  15. Compensation and Voluntary Participation in a Continuum of Service

    Science.gov (United States)

    2006-03-01

    literature that discusses compensation " menus ," or cafeteria -style compensation packages. 14 Of course, it is important to set the levels of these...compensation. A compensation " menu " Another approach would be to offer reservists a choice of compensa- tion packages. 8 So-called compensation menus , or... cafeteria -style compensation packages, allow reservists to choose the form of com- pensation that has the most appeal to their unique situations and

  16. "Digital Futures in Teacher Education": Exploring Open Approaches towards Digital Literacy

    Science.gov (United States)

    Gruszczynska, Anna; Merchant, Guy; Pountney, Richard,

    2013-01-01

    This paper reports the findings of a project "Digital Futures in Teacher Education" (DeFT) undertaken as part of the third phase of the Joint Information Systems Committee (JISC) UK Open Educational Resources (OER) programme. It builds on previous work (Gruszczynska and Pountney, 2012, 2013) that has addressed attempts to embed OER…

  17. Health Insurance Costs and Employee Compensation: Evidence from the National Compensation Survey.

    Science.gov (United States)

    Anand, Priyanka

    2016-12-27

    This paper examines the relationship between rising health insurance costs and employee compensation. I estimate the extent to which total compensation decreases with a rise in health insurance costs and decompose these changes in compensation into adjustments in wages, non-health fringe benefits, and employee contributions to health insurance premiums. I examine this relationship using the National Compensation Survey, a panel dataset on compensation and health insurance for a sample of establishments across the USA. I find that total hourly compensation reduces by $0.52 for each dollar increase in health insurance costs. This reduction in total compensation is primarily in the form of higher employee premium contributions, and there is no evidence of a change in wages and non-health fringe benefits. These findings show that workers are absorbing at least part of the increase in health insurance costs through lower compensation and highlight the importance of examining total compensation, and not just wages, when examining the relationship between health insurance costs and employee compensation. Copyright © 2016 John Wiley & Sons, Ltd. Copyright © 2016 John Wiley & Sons, Ltd.

  18. Methodology for the digital calibration of analog circuits and systems with case studies

    CERN Document Server

    Pastre, Marc

    2006-01-01

    Methodology for the Digital Calibration of Analog Circuits and Systems shows how to relax the extreme design constraints in analog circuits, allowing the realization of high-precision systems even with low-performance components. A complete methodology is proposed, and three applications are detailed. To start with, an in-depth analysis of existing compensation techniques for analog circuit imperfections is carried out. The M/2+M sub-binary digital-to-analog converter is thoroughly studied, and the use of this very low-area circuit in conjunction with a successive approximations algorithm for digital compensation is described. A complete methodology based on this compensation circuit and algorithm is then proposed. The detection and correction of analog circuit imperfections is studied, and a simulation tool allowing the transparent simulation of analog circuits with automatic compensation blocks is introduced. The first application shows how the sub-binary M/2+M structure can be employed as a conventional di...

  19. voltage compensation using artificial neural network

    African Journals Online (AJOL)

    Offor Theophilos

    VOLTAGE COMPENSATION USING ARTIFICIAL NEURAL NETWORK: A CASE STUDY OF. RUMUOLA ... using artificial neural network (ANN) controller based dynamic voltage restorer (DVR). ... substation by simulating with sample of average voltage for Omerelu, Waterlines, Rumuola, Shell Industrial and Barracks.

  20. Calculating Employee Compensation Using An Economic Principle

    National Research Council Canada - National Science Library

    Puneet Jaiprakash

    2015-01-01

    .... This paper develops an intuitive method for calculating the minimum amount by which an employee's compensation must be adjusted taking into account changes in economic conditions since the start of employment...

  1. Comprehensive Environmental Response, Compensation and Liability Act

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), commonly known as Superfund, provides a federal "superfund" to clean up...

  2. 33 CFR 136.241 - Compensation allowable.

    Science.gov (United States)

    2010-07-01

    ... Section 136.241 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) MARINE POLLUTION FINANCIAL RESPONSIBILITY AND COMPENSATION OIL SPILL LIABILITY TRUST FUND; CLAIMS... provided by the State or political subdivision. ...

  3. RF inhomogeneity compensation in structural brain imaging

    National Research Council Canada - National Science Library

    Deichmann, R; Good, C.D; Turner, R

    2002-01-01

    .... It is shown experimentally that images acquired with the compensation pulse may be segmented without using intensity correction algorithms during data postprocessing. Magn Reson Med 47:398–402, 2002. © 2002 Wiley‐Liss, Inc.

  4. Integrated open source mine workers compensation system

    CSIR Research Space (South Africa)

    Coetzee, L

    2006-08-01

    Full Text Available This article describes the Mine Workers Compensation System developed by the CSIR and Molepe Consulting for the South African Department of Health. Mining activities increase the risk of certain occupational lung diseases. South African legislation...

  5. Executive Compensation as an Agency Problem

    National Research Council Canada - National Science Library

    Arye Bebchuk, Lucian; Fried, Jesse M

    2003-01-01

    .... Under this approach, the design of executive compensation is viewed not only as an instrument for addressing the agency problem between managers and shareholders but also as part of the agency problem itself...

  6. Comprehensive Environmental Response, Compensation and Liability Act

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data represents geographic terms used within the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). CERCLA, commonly known as...

  7. Executive Compensation and Misconduct: Environmental Harm

    OpenAIRE

    Minor, Dylan Blu

    2016-01-01

    We explore the relationship between managerial incentives and misconduct using the setting of environmental harm. We find that high powered executive compensation can increase the odds of environmental law-breaking by 40-60% and the magnitude of environmental harm by over 100%. We document similar results for the setting of executive compensation and illegal financial accounting. Finally, we outline some managerial and policy implications to blunt these adverse incentive effects.

  8. Reversible thyristor converters of brushless synchronous compensators

    Directory of Open Access Journals (Sweden)

    А.М.Galynovskiy

    2013-12-01

    Full Text Available Behavior of models of three-phase-to-single-phase rotary reversible thyristor converters of brushless synchronous compensators in a circuit simulation system is analyzed. It is shown that combined control mode of opposite-connected thyristors may result in the exciter armature winding short circuits both at the thyristor feed-forward and lagging current delay angles. It must be taken into consideration when developing brushless compensator excitation systems.

  9. Executive Compensation as an Agency Problem

    OpenAIRE

    Lucian A. Bebchuk; Fried, Jesse M.

    2003-01-01

    This paper provides an overview of the main theoretical elements and empirical underpinnings of a "managerial power" approach to executive compensation. Under this approach, the design of executive compensation is viewed not only as an instrument for addressing the agency problem between managers and shareholders but also as part of the agency problem itself. Boards of publicly traded companies with dispersed ownership, we argue, cannot be expected to bargain at arm's length with managers. As...

  10. Reactive power compensation a practical guide

    CERN Document Server

    Hofmann, Wolfgang; Just, Wolfgang

    2012-01-01

    The comprehensive resource on reactive power compensation, presenting the design, application and operation of reactive power equipment and installations The area of reactive power compensation is gaining increasing importance worldwide. If suitably designed, it is capable of improving voltage quality significantly, meaning that losses in equipment and power systems are reduced, the permissible loading of equipment can be increased, and the over-all stability of system operation improved. Ultimately, energy use and CO2 emisson are reduced. This unique guide discusses the

  11. Geographical relationships and CEO compensation contracts

    OpenAIRE

    Junli Yu; Wei Xu; Ping Zhang

    2017-01-01

    In this paper, we empirically analyze the effects that the geographical relationships between chairman and CEO have on the latter’s compensation contracts, based on samples of listed A-share private firms from 2005 to 2014. We find that geographical relationships are related to lower pay–performance sensitivity, and that the correlation mainly exists in poor performance periods, suggesting that geographical relationships weaken the effectiveness of compensation contracts. We also find that ge...

  12. Becoming digital

    DEFF Research Database (Denmark)

    Pors, Anja Svejgaard

    2015-01-01

    government, and draws on empirical material generated through observations, field notes, interviews and policy documents. The material is documenting how service is performed by frontline agents in the ‘bureaucratic encounter’ with citizens, who needs assistance to use digital self-service in order to apply...... online for a public benefit. Findings: The paper shows that e-government technology changes the mode of professionalism in citizen service from service to support. The paper gives an empirical account of recent Danish digital reforms and shows how the reforms both enable and constrain the work...... of ‘becoming digital’ by frontline agents. Overall the street-level bureaucrat’s classical tasks such as specialized casework are being displaced into promoting and educational tasks. An implication of this is blurred distinctions between professional skills and personal competences of the frontline agent...

  13. [Digital radiography].

    Science.gov (United States)

    Haendle, J

    1983-03-01

    Digital radiography is a generally accepted term comprising all x-ray image systems producing a projected image which resembles the conventional x-ray film image, and which are linked to any type of digital image processing. Fundamental criteria of differentiation are based on the production and detection method of the x-ray image. Various systems are employed, viz. the single-detector, line-detector or fanbeam detector and the area-beam or area-detector image converters, which differ from one another mainly in the manner of conversion of the radiation produced by the x-ray tube. The article also deals with the pros and cons of the various principles, the multitude of systems employed, and the varying frequency of their use in x-ray diagnosis work.

  14. Digital resources

    Directory of Open Access Journals (Sweden)

    Redazione Reti Medievali (a cura di

    2005-12-01

    Full Text Available Bibliotheca Latinitatis Mediaevalis (circa VII sec. - XIV sec. IntraText Digital Library [01/06] Corpus Scriptorum Latinorum. A digital library of Latin literature by David Camden [01/06] Fonti disponibili online concernenti la vita religiosa medievale Rete Vitae Religiosae Mediaevalis Studia Conectens [01/06] Fuentes del Medievo Hispanico Instituto de Historia, Consejo Superior de Investigaciones Científicas [01/06] Latin Literature Forum Romanum [01/06] Ludovico Antonio Muratori, Dissertazioni sopra le antichità italiane, 1751 Biblioteca dei Classici Italiani di Giuseppe Bonghi [01/06] Medieval Latin The Latin Library [01/06] Médiévales Presses Universitaires de Vincennes - Revues.org [01/06] Regesta imperii Deutsche Kommission für die Bearbeitung der Regesta Imperii e.V. [01/06] Suda On Line Byzantine Lexicography [01/06

  15. CASINDO Programme Summary Report

    Energy Technology Data Exchange (ETDEWEB)

    Van der Linden, N.; Smekens, K.; Bole-Rentel, T.; Saidi, R. [Unit ECN Policy Studies, Energy research Centre of the Netherlands ECN, Petten (Netherlands); Wijnker, M. [Eindhoven University of Technology TUE, Eindhoven (Netherlands); Kamphuis, E. [ETC Netherlands, Leusden (Netherlands); Winarno, Oetomo Tri [Institute of Technology, Bandung (Indonesia); Permana, Iman [Technical Education Development Centre, Bandung (Indonesia)

    2012-06-15

    The overall objective of the CASINDO programme is to establish a self-sustaining and self-developing structure at both the national and regional level to build and strengthen human capacity to enable the provinces of North Sumatra, Yogyakarta, Central Java, West Nusa Tenggara and Papua to formulate sound policies for renewable energy and energy efficiency and to develop and implement sustainable energy projects. CASINDO stands for Capacity development and strenghtening for energy policy formulation adn implementation of sustainable energy projects in Indonesia.

  16. PROGRAMMABLE AUTONOMOUS ROBOTS

    Directory of Open Access Journals (Sweden)

    Lucian PESTRITU

    2012-05-01

    Full Text Available This paper aims to present how technology has advanced in terms of programmable microcontrollers and how circuits can be equipped with complex software so they can to act on their own, becoming a so-called autonomous robot or agent. To illustrate this, the 3PI robot is used, which is faced with solving a problem by itself, namely: solving a maze on its own. To make this possible so we had to implement this robot with a computer algorithm that helps it to remember the route that it had just travelled and then find the shortest and fastest way to the destination point.

  17. Multilateral Interoperability Programme

    Directory of Open Access Journals (Sweden)

    L. Burita

    2009-12-01

    Full Text Available The Multilateral Interoperability Programme (MIP is a voluntary and independent activity in NATO environment by the participating nations and organizations. The MIP concept is based on data exchange in form of common exchange data model to achieve the international interoperability in command and control information systems (C2IS of the tactical units. The article describes the basis of the MIP organizations, structure, planning and testing processes. The core of the MIP solution is the Information Exchange Data Model (IEDM. The Czech Armed Forces (CAF MIP process implementation is mentioned. The MIP example is a part of university education process.

  18. Novel Compensation Scheme for the Modulation Gain to Suppress the Quantization-Induced Bias in a Fiber Optic Gyroscope.

    Science.gov (United States)

    Pan, Xiong; Liu, Pengcheng; Zhang, Shaobo; Jin, Jing; Song, Ningfang

    2017-04-10

    A novel digital compensation scheme is demonstrated to control the gain of the modulation chain and suppress the influence of quantization error on bias. The error produced by the quantization multiplied by the scaling factor is theoretically analyzed. Simulations indicate that the quantization error varies with the input angular velocity and temperature, which is verified by experiments. By switching the integration and compression operations in the modulation chain, this quantization error is reduced, while automatic reset of the digital phase ramp register is achieved. We test the scheme in a fiber optic gyroscope. The test results reveal that the quantization-induced bias is suppressed and the residual bias is two times less than the desired accuracy with data accumulated over one-second sample interval. The scheme is a feasible method to miniaturize fiber optic gyroscope using a totally digital circuit for compensation of the modulation gain.

  19. Environmental change, phenotypic plasticity, and genetic compensation.

    Science.gov (United States)

    Grether, Gregory F

    2005-10-01

    When a species encounters novel environmental conditions, some phenotypic characters may develop differently than in the ancestral environment. Most environmental perturbations of development are likely to reduce fitness, and thus selection would usually be expected to favor genetic changes that restore the ancestral phenotype. I propose the term "genetic compensation" to refer to this form of adaptive evolution. Genetic compensation is a subset of genetic accommodation and the reverse of genetic assimilation. When genetic compensation has occurred along a spatial environmental gradient, the mean trait values of populations in different environments may be more similar in the field than when representatives of the same populations are raised in a common environment (i.e., countergradient variation). If compensation is complete, genetic divergence between populations may be cryptic, that is, not detectable in the field. Here I apply the concept of genetic compensation to three examples involving carotenoid-based sexual coloration and then use these and other examples to discuss the concept in a broader context. I show that genetic compensation may lead to a cryptic form of reproductive isolation between populations evolving in different environments, may explain some puzzling cases in which heritable traits exposed to strong directional selection fail to show the expected evolutionary response, and may complicate efforts to monitor populations for signs of environmental deterioration.

  20. Goniometer crosstalk compensation for knee joint applications.

    Science.gov (United States)

    de Oliveira Sato, Tatiana; Hansson, Gert-Åke; Coury, Helenice Jane Cote Gil

    2010-01-01

    Electrogoniometers are prone to crosstalk errors related to endblocks rotation (general crosstalk) and to the characteristics of each sensor (individual crosstalk). The aim of this study was to assess the crosstalk errors due to endblock misalignments and to propose a procedure to compensate for these errors in knee applications. A precision jig was used to simulate pure ± 100° flexion/extension movements. A goniometer was mounted with various degrees of valgus/varus (± 20°) and rotation (± 30°) misalignments. For valgus/varus misalignments, although offset compensation eliminated the error in the valgus/varus recordings for 0° of flexion/extension and reduced it to a few degrees for small (± 30°) flexion/extension angles (root mean square error = 1.1°), the individual crosstalk caused pronounced errors for large (± 100°) angles (18.8°). Subsequent compensation for this crosstalk reduced these errors to 0.8° and 4.5°, respectively. For rotational misalignment, compensation for the general crosstalk by means of coordinate system rotation, in combination with compensation for the individual crosstalk, reduced the errors for small (± 30°) and large (± 100°) flexion/extension angles from 3.6° to 0.5° and from 15.5° to 2.4°, respectively. Crosstalk errors were efficiently compensated by the procedures applied, which might be useful in preprocessing of knee functional data, thereby substantially improving goniometer accuracy.

  1. A fully programmable computing architecture for medical ultrasound machines.

    Science.gov (United States)

    Schneider, Fabio Kurt; Agarwal, Anup; Yoo, Yang Mo; Fukuoka, Tetsuya; Kim, Yongmin

    2010-03-01

    Application-specific ICs have been traditionally used to support the high computational and data rate requirements in medical ultrasound systems, particularly in receive beamforming. Utilizing the previously developed efficient front-end algorithms, in this paper, we present a simple programmable computing architecture, consisting of a field-programmable gate array (FPGA) and a digital signal processor (DSP), to support core ultrasound signal processing. It was found that 97.3% and 51.8% of the FPGA and DSP resources are, respectively, needed to support all the front-end and back-end processing for B-mode imaging with 64 channels and 120 scanlines per frame at 30 frames/s. These results indicate that this programmable architecture can meet the requirements of low- and medium-level ultrasound machines while providing a flexible platform for supporting the development and deployment of new algorithms and emerging clinical applications.

  2. Digital Humanities and networked digital media

    DEFF Research Database (Denmark)

    Finnemann, Niels Ole

    2014-01-01

    This article discusses digital humanities and the growing diversity of digital media, digital materials and digital methods. The first section describes the humanities computing tradition formed around the interpretation of computation as a rule-based process connected to a concept of digital...... of software-supported methods. This is so, in part, because of the complexity of the world and, in part, because digital media remain open to the projection of new epistemologies onto the functional architecture of these media. The third section discusses the heterogeneous character of digital materials...

  3. Programmable pH buffers

    Science.gov (United States)

    Gough, Dara Van; Huber, Dale L.; Bunker, Bruce C.; Roberts, Mark E.

    2017-01-24

    A programmable pH buffer comprises a copolymer that changes pK.sub.a at a lower critical solution temperature (LCST) in water. The copolymer comprises a thermally programmable polymer that undergoes a hydrophobic-to-hydrophilic phase change at the LCST and an electrolytic polymer that exhibits acid-base properties that are responsive to the phase change. The programmable pH buffer can be used to sequester CO.sub.2 into water.

  4. Use of spatial phase shifting technique in digital speckle pattern interferometry (DSPI) and digital shearography (DS).

    Science.gov (United States)

    Bhaduri, Basanta; Mohan, N K; Kothiyal, M P; Sirohi, R S

    2006-11-27

    Digital speckle pattern interferometry (DSPI) and digital shearography (DS) are well known optical tools for qualitative as well as quantitative measurements of displacement components and its derivatives of engineering structures subjected either static or dynamic load. Spatial phase shifting (SPS) technique is useful for extracting quantitative displacement data from the system with only two frames. Optical configurations for DSPI and DS with a double aperture mask in front of the imaging lens for spatial phase shifting are proposed in this paper for the measurement of out-of-plane displacement and its first order derivative (slope) respectively. An error compensating four-phase step algorithm is used for quantitative fringe analysis.

  5. Use of spatial phase shifting technique in digital speckle pattern interferometry (DSPI) and digital shearography (DS)

    Science.gov (United States)

    Bhaduri, Basanta; Mohan, N. K.; Kothiyal, M. P.; Sirohi, R. S.

    2006-11-01

    Digital speckle pattern interferometry (DSPI) and digital shearography (DS) are well known optical tools for qualitative as well as quantitative measurements of displacement components and its derivatives of engineering structures subjected either static or dynamic load. Spatial phase shifting (SPS) technique is useful for extracting quantitative displacement data from the system with only two frames. Optical configurations for DSPI and DS with a double aperture mask in front of the imaging lens for spatial phase shifting are proposed in this paper for the measurement of out-of-plane displacement and its first order derivative (slope) respectively. An error compensating four-phase step algorithm is used for quantitative fringe analysis.

  6. Cigotica programme: pediatric experiences

    Directory of Open Access Journals (Sweden)

    Lešović Snežana

    2011-01-01

    Full Text Available Introduction The alarming spread of obesity epidemic in children and adolsecents, as well as the absence of tested and efficient measures and programmes on obesity preven­tion indicate the necessity for the establishment of the Centre for the prevention, treatment and rehabilitation of obesity in children and adolescents and the 'Cigotica Programme' at the Special Hospital 'Zlatibor'. The advantage of the 'Cigotica' Programme is the multidisciplinary approach to treating obese children, which implies specific education, dietetic interventions with the reduction in the total daily calorie intake, physical activity, medical, educational and psychological support, change of behavior and lifestyle. Objective To define obesity complications, metabolic risk factors and treatment effects on body composition and metabolic parameters in adolescents participating in the 'Cigotica' Programme. Method 1,030 adolescents were examined (498 girls and 532 boys, aged 12 to 18, average age 15.45, diagnosed with primary obesity, hospitalized at the Centre for the prevention, treatment and rehabilitation of obesity in children and adolescents at the Special Hospital 'Zlatibor', in the period from 27/07/2008 to 03/10/2010. Hospitalization lasted 21 days. Obesity criterion was body mass index (BMI > +2 SD . Body The Special Hospital for the Thyroid Gland and Metabolism Zlatibor mass, BMI, % of fat were obtained by means of Tanita scales for determining body composition using the impendence method. Apart from medical examination, blood pressure was also taken. The levels of triglycerides, total HDL and LDL cholesterols, uric acids and glycemia were determined on the second and twenty-first day of hospitalization after a 12-day fasting period. Results After the multidisciplinary treatment, the average reduction in body mass (p< 0.05 in all adolescents was 5.92 ± 2.71 kg, in boys - 6.24 ±3.24 kg, and in girls -5.86±2.4. During the 21-day hospitalization, the average

  7. Neurovestibular Compensation following Ototoxic Lesion and Labyrinthectomy

    Directory of Open Access Journals (Sweden)

    Yazdanshenas, Hamed

    2016-03-01

    Full Text Available Introduction Unilateral labyrinthectomy and intra-tympanic gentamycin have been employed in the treatment of Ménière's disease, but the efficacy of these techniques has not been well established. Objective The objective of this study is to measure the time course of recovery from a unilateral labyrinthectomy either after ipsilateral topical treatment with gentamicin to the inner ear or without the previous insult. Methods Twenty-nine adult Mongolian gerbils were randomized into two experimental groups. Group 1 (n = 17 received a right ear gentamicin drug-induced lesion by unilateral labyrinthectomy (UL. Group 2 (n = 12 only received a right unilateral labyrinthectomy lesion. We measured the horizontal vestibulo-ocular responses in gerbils before and after the lesion. The gerbils received an angular acceleration stimulus and their eye movements were recorded. Results The gentamicin lesion resulted in a quicker recovery. Experimental groups underwent a similar time course of recovery. Statistical analysis showed no significant difference between the two groups. Both groups displayed adaptation to the lesion by day 21, but long-term compensation did not completely revert to the original pre-lesion state. Conclusions In a lesion requiring both static and dynamic compensation as in UL, the need for a static compensation may alter pre-existing compensation from a previous dynamic insult and require a new compensation. A previous lesion and adaptation is not preserved for a second lesion and the subject has to re-compensate. Therefore, surgical treatment in Meniere's disease such as UL can be considered without prior gentamicin treatment. Static and dynamic compensations do not appear to be as independent as previous studies have suggested.

  8. Economic benefit of the PHLAME wellness programme on firefighter injury.

    Science.gov (United States)

    Kuehl, K S; Elliot, D L; Goldberg, L; Moe, E L; Perrier, E; Smith, J

    2013-04-01

    Work-related injuries and illness are prevalent and costly. Firefighting is especially hazardous and many firefighters sustain work-related injuries. Workplace health promotion programmes have shown positive return on investment (ROI). Little is known about how similar programmes would impact injury and cost among firefighters. To evaluate the impact of a workplace health promotion intervention on workers' compensation (WC) claims and medical costs among Oregon fire departments participating in the PHLAME (Promoting Healthy Lifestyles: Alternative Models' Effects) health promotion programme compared with Oregon fire departments not participating in PHLAME. Data from firefighters from four large urban fire departments in Oregon were evaluated using a retrospective quasi-experimental study design. Outcomes were (i) total annual firefighter WC claims, (ii) total annual incurred medical costs prior to and after implementation of the PHLAME firefighter worksite health promotion programme (iii) and an ROI analysis. Data were obtained from 1369 firefighters (mean age of 42 years, 91% white, 93% male). WC claims (P firefighter injury and illness rates.

  9. Digital Augmented Reality Audio Headset

    Directory of Open Access Journals (Sweden)

    Jussi Rämö

    2012-01-01

    Full Text Available Augmented reality audio (ARA combines virtual sound sources with the real sonic environment of the user. An ARA system can be realized with a headset containing binaural microphones. Ideally, the ARA headset should be acoustically transparent, that is, it should not cause audible modification to the surrounding sound. A practical implementation of an ARA mixer requires a low-latency headphone reproduction system with additional equalization to compensate for the attenuation and the modified ear canal resonances caused by the headphones. This paper proposes digital IIR filters to realize the required equalization and evaluates a real-time prototype ARA system. Measurements show that the throughput latency of the digital prototype ARA system can be less than 1.4 ms, which is sufficiently small in practice. When the direct and processed sounds are combined in the ear, a comb filtering effect is brought about and appears as notches in the frequency response. The comb filter effect in speech and music signals was studied in a listening test and it was found to be inaudible when the attenuation is 20 dB. Insert ARA headphones have a sufficient attenuation at frequencies above about 1 kHz. The proposed digital ARA system enables several immersive audio applications, such as a virtual audio tourist guide and audio teleconferencing.

  10. Three-color crystal digital PCR.

    Science.gov (United States)

    Madic, J; Zocevic, A; Senlis, V; Fradet, E; Andre, B; Muller, S; Dangla, R; Droniou, M E

    2016-12-01

    Digital PCR is an exciting new field for molecular analysis, allowing unprecedented precision in the quantification of nucleic acids, as well as the fine discrimination of rare molecular events in complex samples. We here present a novel technology for digital PCR, Crystal Digital PCR™, which relies on the use of a single chip to partition samples into 2D droplet arrays, which are then subjected to thermal cycling and finally read using a three-color fluorescence scanning device. This novel technology thus allows three-color multiplexing, which entails a different approach to data analysis. In the present publication, we present this innovative workflow, which is both fast and user-friendly, and discuss associated data analysis issue, such as fluorescence spillover compensation and data representation. Lastly, we also present proof-of-concept of this three-color detection system, using a quadriplex assay for the detection of EGFR mutations L858R, L861Q and T790M.

  11. Digital Pulse-Width-Modulation Circuit

    Science.gov (United States)

    Wenzler, Carl J.; Eichenberg, Dennis J.

    1995-01-01

    Digital pulse-width-modulation circuit provides programmable duration from 1 microsecond to full on, at repetition rate of 1 kHz. Designed for use in controlling CO2 laser, also used in applications in which precision and flexibility of digital control of pulse durations needed. Circuit incorporates low-power Schottky transistor/transistor-logic (TTL) devices in critical high-speed parts. Designed in TTL to make it compatible with Pro-Log 7914 (or equivalent) decoder input/output (I/O) utility printed-circuit card.

  12. 50 CFR 600.245 - Council member compensation.

    Science.gov (United States)

    2010-10-01

    ... 50 Wildlife and Fisheries 8 2010-10-01 2010-10-01 false Council member compensation. 600.245....245 Council member compensation. (a) All voting Council members whose eligibility for compensation has... state income taxes. A report of compensation will be furnished each year by the member's Council to the...

  13. 38 CFR 3.5 - Dependency and indemnity compensation.

    Science.gov (United States)

    2010-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2010-07-01 2010-07-01 false Dependency and indemnity... ADJUDICATION Pension, Compensation, and Dependency and Indemnity Compensation General § 3.5 Dependency and indemnity compensation. (a) Dependency and indemnity compensation. This term means a monthly payment made by...

  14. Former migrant mineworkers with respiratory disease: the South African compensation system, and implications for neighbouring countries.

    Science.gov (United States)

    Steen, T W; Mabongo, N; Moeti, T; Monare, B; Trapido, A S

    2000-01-01

    In the region of Southern Africa, substantial numbers of people, primarily males, have been employed in the South African mining industry. Migrant workers from neighbouring countries have constituted a large part of the work force. Until recently, there has been little or no attention directed toward the state of health of these individuals, despite the fact that their work involves a high health risk, especially in regard to mine-related lung diseases. In addition, the South African workers' compensation programme has seldom been utilised by the migrant worker who is a victim of occupational disease. However, recent experiences from Botswana show that compensation claims can be successfully made from the neighbouring countries where the migrant workers originate. Efforts are being made to address the problem systematically, and the government of Botswana is actively involved. The major occupational lung disorders are described briefly, and differential diagnostic problems with pulmonary TB are discussed. Furthermore, a survey of the compensation system in South Africa is presented, and practical steps for medical examinations involving compensation claims are described.

  15. Digital acquisition and wavelength control of seed laser for space-based Lidar applications Project

    Data.gov (United States)

    National Aeronautics and Space Administration — This SBIR Phase I proposes to establish the feasibility of using a space qualifiable Field Programmable Gate Array (FPGA) based digital controller to autonomously...

  16. Digital radiography

    DEFF Research Database (Denmark)

    Precht, H; Gerke, O; Rosendahl, K

    2012-01-01

    BACKGROUND: New developments in processing of digital radiographs (DR), including multi-frequency processing (MFP), allow optimization of image quality and radiation dose. This is particularly promising in children as they are believed to be more sensitive to ionizing radiation than adults...... image processing parameters, a significant dose reduction is possible without significant loss of image quality........ OBJECTIVE: To examine whether the use of MFP software reduces the radiation dose without compromising quality at DR of the femur in 5-year-old-equivalent anthropomorphic and technical phantoms. MATERIALS AND METHODS: A total of 110 images of an anthropomorphic phantom were imaged on a DR system (Canon DR...

  17. Digital pathology

    CERN Document Server

    Sucaet, Yves

    2014-01-01

    Digital pathology has experienced exponential growth, in terms of its technology and applications, since its inception just over a decade ago. Though it has yet to be approved for primary diagnostics, its values as a teaching tool, facilitator of second opinions and quality assurance reviews and research are becoming, if not already, undeniable. It also offers the hope of providing pathology consultant and educational services to under-served areas, including regions of the world that could not possibly sustain this level of services otherwise. And this is just the beginning, as its adoption b

  18. Programmable ferroelectric tunnel memristor

    Directory of Open Access Journals (Sweden)

    Andy eQuindeau

    2014-02-01

    Full Text Available We report an analogously programmable memristor based on genuine electronic resistive switching combining ferroelectric switching and electron tunneling. The tunnel current through an 8 unit cell thick epitaxial Pb(Zr[0.2]Ti[0.8]O[3] film sandwiched between La[0.7]Sr[0.3]MnO[3] and cobalt electrodes obeys the Kolmogorov-Avrami-Ishibashi model for bidimensional growth with a characteristic switching time in the order of 10^-7 seconds. The analytical description of switching kinetics allows us to develop a characteristic transfer function that has only one parameter viz. the characteristic switching time and fully predicts the resistive states of this type of memristor.

  19. Programmable Cadence Timer

    Science.gov (United States)

    Hall, William A.; Gilbert, John

    1990-01-01

    Electronic metronome paces users through wide range of exercise routines. Conceptual programmable cadence timer provides rhythmic aural and visual cues. Timer automatically changes cadence according to program entered by the user. It also functions as clock, stopwatch, or alarm. Modular pacer operated as single unit or as two units. With audiovisual module moved away from base module, user concentrates on exercise cues without distraction from information appearing on the liquid-crystal display. Variety of uses in rehabilitative medicine, experimental medicine, sports, and gymnastics. Used in intermittent positive-pressure breathing treatment, in which patient must rhythmically inhale and retain medication delivered under positive pressure; and in incentive spirometer treatment, in which patient must inhale maximally at regular intervals.

  20. Programmable multimode quantum networks

    Science.gov (United States)

    Armstrong, Seiji; Morizur, Jean-François; Janousek, Jiri; Hage, Boris; Treps, Nicolas; Lam, Ping Koy; Bachor, Hans-A.

    2012-08-01

    Entanglement between large numbers of quantum modes is the quintessential resource for future technologies such as the quantum internet. Conventionally, the generation of multimode entanglement in optics requires complex layouts of beamsplitters and phase shifters in order to transform the input modes into entangled modes. Here we report the highly versatile and efficient generation of various multimode entangled states with the ability to switch between different linear optics networks in real time. By defining our modes to be combinations of different spatial regions of one beam, we may use just one pair of multi-pixel detectors in order to measure multiple entangled modes. We programme virtual networks that are fully equivalent to the physical linear optics networks they are emulating. We present results for N=2 up to N=8 entangled modes here, including N=2, 3, 4 cluster states. Our approach introduces the highly sought after attributes of flexibility and scalability to multimode entanglement.

  1. Photovoltaic programme - edition 2003

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-07-01

    This publication issued by the Swiss Federal Office of Energy's Photovoltaics (PV) Programme presents an overview (in English) of activities and projects in the photovoltaics research and pilot and demonstration area in Switzerland. Progress in the area of future solar cell technologies, modules and building integration, system technologies, planning and operating aids is summarised. Also, PV for applications in developing countries, thermo-photovoltaics and international co-operation are commented on. In the area of pilot and demonstration projects, component development, PV integration in sloping roofs, on flat roofs and noise barriers as well as further PV plant are looked at. Also, measurement campaigns, studies, statistics and further PV-related topics are summarised. This volume also presents the abstracts of reports made by the project managers of 73 research and pilot and demonstration projects in these areas for 2002.

  2. Digital broadband linearization technique and its application to photonic time-stretch analog-to-digital converter.

    Science.gov (United States)

    Fard, Ali; Gupta, Shalabh; Jalali, Bahram

    2011-04-01

    Suppression of distortion induced by nonlinearity in a dynamical system (such as an analog optical link) is very challenging, particularly for a wide-bandwidth signal. Conventional compensation techniques are computationally intensive, significantly limiting their realization in real-time applications. Here, we propose and demonstrate an efficient digital postprocessing technique to suppress distortions added to a wideband signal by a nonlinear system with memory effect. Experimentally, digital broadband linearization of the photonic time-stretch analog-to-digital converter (TSADC) is demonstrated. In case of TSADC, a dynamic range improvement of >15 dB compared to conventional memory-less correction method is achieved.

  3. Managerial Stock Compensation and Risky Investment

    Directory of Open Access Journals (Sweden)

    Raluca Georgiana Nastasescu

    2009-06-01

    Full Text Available This study analyzes the relationship between the mix of CEO equity-based compensation, namely stock options and restricted stock, and firms' risky investment. In general, the theory suggests that long-term compensation aligns CEOs' and shareholders' interests by inducing the managers to undertake risky investment, which has a positive impact on longterm well-being of the firm. However, as my results show, it is important to distinguish between types of awards since they can have different effects on the riskiness of the firm. In this respect, I answer the question how are different types of stock based compensation related to the executives' determination to increase or not the intensity of the firm's risky investment? I find that awarding the CEOs preponderantly with stock options positively affects the firm's level of R&D investment. Conversely, a higher proportion of restricted stock in the CEO's compensation is related to lower investment in (risky R&D. The inverse relation of causality also holds. Firms that make intensive R&D investments are more likely to award their CEOs with more stock options relative to restricted stock. Overall, the results are consistent with the theoretical prediction, in that the managerial compensation scheme plays an important role in determining the level of R&D investment.

  4. Attenuation compensation for optical coherence tomography imaging

    Science.gov (United States)

    Chang, Shoude; Flueraru, Costel; Mao, Youxin; Sherif, Sherif

    2009-12-01

    Optical coherence tomography (OCT) is a noninvasive technique that provides micrometer-scale imaging of tissue. As most biological tissues are considered turbid, it causes attenuation of the OCT signal and limits the depth penetration. Although a few algorithms had been developed to compensate the attenuation, almost all of them need to extract the scattering parameters before doing the compensation procedure. Because the real biological samples are anisotropic and multilayer-like structure, it is not time-efficient to model and solve these scattering parameters. This paper introduces a new method to compensate the OCT signal attenuation in depth. By analyzing the input signal, a compensation function is adaptively derived for each A-scan line, which can be used effectively to compensate the energy loss in the large sections and enhance the details in the deep, dark-like areas. Three bio-samples, a piece of onion, a Poecilia Wingei fish and a piece of rabbit abdominal aorta, were used to test our method. OCT images obtained by a swept-source OCT system were processed by the proposed method. Results show the visualization of structures in OCT images has been evidently improved, especially in deep region.

  5. Mechanisms of vestibular compensation: recent advances.

    Science.gov (United States)

    Dutia, Mayank B

    2010-10-01

    This article reviews recent studies that have provided experimental evidence for mechanisms of neural and synaptic plasticity in the brain during vestibular compensation, the behavioural recovery that takes place following peripheral vestibular lesions. First, experimental evidence from animal studies indicates that an unbalanced vestibular commissural system is a fundamental cause of the syndrome of oculomotor and postural deficits after unilateral labyrinthectomy. Second, recent studies suggest the involvement of both GABAergic and glycinergic commissural neurons. In addition gliosis and reactive neurogenesis in the ipsilesional vestibular nuclei appear to be involved in compensation. Third, evidence from cerebellar-deficient mutant mice demonstrates an important role for cerebellum-dependent motor learning in the longer term. Factors such as stress steroids and neuromodulators such as histamine influence these plasticity mechanisms and may thus contribute to the development of compensation in patients. Vestibular compensation involves multiple, parallel plastic processes at various sites in the brain. Experimental evidence suggests that adaptive changes in the sensitivity of ipsilesional vestibular neurons to the inhibitory neurotransmitters GABA and glycine, changes in the electrophysiological excitability of vestibular neurons, changes in the inhibitory control of the brainstem vestibular networks by the cerebellum, gliosis and neurogenesis in the ipsilesional vestibular nuclei, and activity-dependent reorganization of the synaptic connectivity of the vestibular pathways are mechanisms involved in compensation.

  6. Low complexity split digital backpropagation for digital subcarrier-multiplexing optical transmissions.

    Science.gov (United States)

    Xiao, Zhuopeng; Zhuge, Qunbi; Fu, Songnian; Zhang, Fangyuan; Qiu, Meng; Tang, Ming; Liu, Deming; Plant, David V

    2017-10-30

    A split digital backpropagation (DBP) scheme for digital subcarrier-multiplexing (SCM) transmissions, denoted as SSDBP, is proposed and studied in both experiments and simulations. The implementation of the SSDBP is split at the transmitter and the receiver, leveraging existing chromatic dispersion (CD) compensation blocks to reduce complexity. We experimentally demonstrate that the SSDBP, with a complexity reduction up to 50% compared to the original receiver based SCM-DBP, can achieve a nonlinear compensation Q2 gain of 0.7-dB and 0.9-dB for 1920-km and 2880-km 34.94-GBd single channel PDM-16QAM transmissions, respectively. The maximum reach can be extended by 31.6% using 2-step SSDBP with only 27.5 complex multiplications per sample. Meanwhile, using 3-step SSDBP, the reach extension can be increased to 40.8%. The benefit of implementing part of SSDBP at the transmitter is experimentally validated with 0.1-dB Q2 improvement at 4-dBm launch power. We also numerically investigate the impact of the digital-to-analog converter (DAC) resolution and fiber parameter uncertainties on the nonlinear compensation performance of the SSDBP.

  7. DIGITAL TIMELINES- AN INTERDISCIPLINARY APPROACH TO DEMENTIA

    Directory of Open Access Journals (Sweden)

    Cristina Anca COLIBABA

    2015-04-01

    Full Text Available The Digital timelines project (2014-1-UK01-KA204-000071 co-financed by the European Union under the Erasmus+ programme and coordinated by the Lancaster and Morecambe College, UK addresses the issue of dementia. The project relies on thorough research on dementia carried out in five European countries and aims at producing a training programme and creating digital resources which can encapsulate memory stimulating information from a variety of media to benefit specifically the person with dementia and their family and friends, as well as professional carers. New models of coordinated and non-pharmacologic rehabilitative care systems meeting the needs of individuals with dementia and their family members are imperative in order to respond to the increasing number of individuals living in the community with this devastating disease.

  8. A Programmable, Scalable-Throughput Interleaver

    Directory of Open Access Journals (Sweden)

    Rijshouwer EJC

    2010-01-01

    Full Text Available The interleaver stages of digital communication standards show a surprisingly large variation in throughput, state sizes, and permutation functions. Furthermore, data rates for 4G standards such as LTE-Advanced will exceed typical baseband clock frequencies of handheld devices. Multistream operation for Software Defined Radio and iterative decoding algorithms will call for ever higher interleave data rates. Our interleave machine is built around 8 single-port SRAM banks and can be programmed to generate up to 8 addresses every clock cycle. The scalable architecture combines SIMD and VLIW concepts with an efficient resolution of bank conflicts. A wide range of cellular, connectivity, and broadcast interleavers have been mapped on this machine, with throughputs up to more than 0.5 Gsymbol/second. Although it was designed for channel interleaving, the application domain of the interleaver extends also to Turbo interleaving. The presented configuration of the architecture is designed as a part of a programmable outer receiver on a prototype board. It offers (near universal programmability to enable the implementation of new interleavers. The interleaver measures 2.09 m in 65 nm CMOS (including memories and proves functional on silicon.

  9. Digital Humanities

    DEFF Research Database (Denmark)

    Nielsen, Hans Jørn

    2015-01-01

    overgangen fra trykkekultur til digital kultur. For det første problemstillingen omkring digitalisering af litterær kulturarv med fokus på kodning og tagging af teksten samt organisering i hypertekststrukturer. For det andet reorganiseringen af det digitale dokument i dataelementer og database. For det......Artiklen præsenterer først nogle generelle problemstillinger omkring Digital Humanities (DH) med det formål at undersøge dem nærmere i relation til konkrete eksempler på forskellige digitaliseringsmåder og ændringer i dokumentproduktion. I en nærmere afgrænsning vælger artiklen den tendens i DH......, der betragter DH som forbundet med "making" og "building" af digitale objekter og former. Dette kan også karakteriseres som DH som praktisk-produktiv vending. Artiklen har valgt tre typer af digitalisering. De er valgt ud fra, at de skal repræsentere forskellige måder at håndtere digitaliseringen på...

  10. An automatic bibliography indexing programme

    Directory of Open Access Journals (Sweden)

    J. W. Morris

    1974-12-01

    Full Text Available A relatively simple FORTRAN IV programme, designed for a small computer, for author and key-word indexes to bibliographic records is described, and examples of output are given. It is com­pared with some other systems. Suggested improvements to the programme are given.

  11. Climate Ambassador Programmes in Municipalities

    DEFF Research Database (Denmark)

    Jørgensen, Michael Søgaard; Pedersen, Stine Rahbek

    2016-01-01

    in the municipalities of Furesø, Lyngby-Taarbæk, Frederiksberg and Hvidovre. Two of the ambassador programmes presented here focus primarily on climate change mitigation initiatives, and two have a broader focus on sustainable development. Important elements for the impact of these programmes are the networking among...

  12. Programmable architecture for quantum computing

    NARCIS (Netherlands)

    Chen, J.; Wang, L.; Charbon, E.; Wang, B.

    2013-01-01

    A programmable architecture called “quantum FPGA (field-programmable gate array)” (QFPGA) is presented for quantum computing, which is a hybrid model combining the advantages of the qubus system and the measurement-based quantum computation. There are two kinds of buses in QFPGA, the local bus and

  13. Undergraduate Programme: Admissions for 2013

    Indian Academy of Sciences (India)

    IAS Admin

    2013-02-01

    Feb 1, 2013 ... Undergraduate Programme: Admissions for 2013. The Indian Institute of Science, a leading institution of higher learning with a strong tradition of research, offers a four-year Bachelor of Science (B.S.) Programme which is designed as a balanced blend of core science and interdisciplinary topics to serve as ...

  14. FPGA-based digital convolution for wireless applications

    CERN Document Server

    Guan, Lei

    2017-01-01

    This book presents essential perspectives on digital convolutions in wireless communications systems and illustrates their corresponding efficient real-time field-programmable gate array (FPGA) implementations. Covering these digital convolutions from basic concept to vivid simulation/illustration, the book is also supplemented with MS PowerPoint presentations to aid in comprehension. FPGAs or generic all programmable devices will soon become widespread, serving as the “brains” of all types of real-time smart signal processing systems, like smart networks, smart homes and smart cities. The book examines digital convolution by bringing together the following main elements: the fundamental theory behind the mathematical formulae together with corresponding physical phenomena; virtualized algorithm simulation together with benchmark real-time FPGA implementations; and detailed, state-of-the-art case studies on wireless applications, including popular linear convolution in digital front ends (DFEs); nonlinear...

  15. National biosecurity approaches, plans and programmes in response to diseases in farmed aquatic animals: evolution, effectiveness and the way forward

    DEFF Research Database (Denmark)

    Håstein, T.; Binde, M.; Hine, M.

    2008-01-01

    and eradication are also discussed. Important to the effectiveness of such strategies are provision of financial, personnel and other resources to implement them, including incentives such as indemnification or compensation in eradication programmes, and practical linkage to regulatory or government policy...

  16. (Crime Victims’ Compensation: The Emergence of Convergence

    Directory of Open Access Journals (Sweden)

    Renée S.B. Kool

    2014-07-01

    Full Text Available Crime victims’ compensation has become a major issue within Dutch criminal policy. Legal procedures have been subject to change, leading towards the convergence of tort law and criminal law. Such a convergence calls for a reflection (on the application of the core concepts of responsibility, accountability and liability. Moreover, the current pursuit of victims’ compensation affects procedural issues, specifically with regard to the issue of enforcement. Leaving aside the issue of the legitimacy of victims’ compensation, this convergence raises the question of how to preserve the delicate balance that flows from the use of the law as an instrument to preserve social order. The topical question is not whether convergence is occurring, but how we must deal with it in order to find a (new equilibrium between the public interest and the interest of the individual who has experienced a harmful wrong.

  17. On the compensation effect in heterogeneous catalysis

    DEFF Research Database (Denmark)

    Pedersen, Thomas Bligaard; Honkala, Johanna Karoliina; Logadottir, Ashildur

    2003-01-01

    For a class of heterogeneously catalyzed reactions, we explain the compensation effect in terms of a switching of kinetic regimes leading to a concomitant change in the apparent activation energy and in the prefactor for the overall rate of the reaction. We first use the ammonia synthesis...... to illustrate the effect. Both experiments and a detailed kinetic model show a compensation effect. Second, we use density functional theory calculations to show that the compensation effect is not only due to changes in the activation barrier and prefactor of the rate-determining step, N-2 dissociation. We...... model for a surface-catalyzed reaction and show that the effect can be related to a shift in kinetic regime, from one dominated by the rate of activation of the reactants to a regime where the stability of the reaction products on the surface becomes increasingly important. Finally, we present arguments...

  18. Software compensation in Particle Flow reconstruction

    CERN Document Server

    Lan Tran, Huong; Sefkow, Felix; Green, Steven; Marshall, John; Thomson, Mark; Simon, Frank

    2017-01-01

    The Particle Flow approach to calorimetry requires highly granular calorimeters and sophisticated software algorithms in order to reconstruct and identify individual particles in complex event topologies. The high spatial granularity, together with analog energy information, can be further exploited in software compensation. In this approach, the local energy density is used to discriminate electromagnetic and purely hadronic sub-showers within hadron showers in the detector to improve the energy resolution for single particles by correcting for the intrinsic non-compensation of the calorimeter system. This improvement in the single particle energy resolution also results in a better overall jet energy resolution by improving the energy measurement of identified neutral hadrons and improvements in the pattern recognition stage by a more accurate matching of calorimeter energies to tracker measurements. This paper describes the software compensation technique and its implementation in Particle Flow reconstruct...

  19. Incomplete and imperfect information for sales compensation

    Directory of Open Access Journals (Sweden)

    Raluca Valeanu

    2010-12-01

    Full Text Available Sales force compensation represents the fix and / or variable payment by the company. To compensate agents based on the results, the company set a goal which is brought to their attention through the compensation plan. Applying the model of moral hazard, where the agent behavior cannot be verified, it cannot be specified in the contract what is the expected behavior of the agent. In order to make an offer to contract principal should know the effort that the agent will submit it to define the payment and the contract is determined optimally in trade between the two conflicting objectives of the two participants in the contract. Although agent behavior cannot be verified, the result of this behavior should be measurable at the end of the contract so that the employer may make the contract contingent on effort commission agent for sale of which is measured by the amount of earnings to the company.

  20. Institutional directors and board compensation: Spanish evidence

    Directory of Open Access Journals (Sweden)

    Felix López-Iturriaga

    2015-07-01

    Full Text Available We address the influence of directors who represent institutional investors in three aspects of board compensation policies: level of compensation, composition, and performance sensitivity. We differentiate pressure-sensitive directors (i.e., with business links and pressure-resistant directors (i.e., without business links. Our results show that pressure-resistant directors decrease total board compensation and its fixed proportion, whereas they increase the variable proportion of total remuneration and the pay-for-performance sensitivity. By contrast, pressure-sensitive directors offer the opposite results. These findings are consistent with the view that institutional investors are not a homogeneous group and that pressure-resistant directors fulfill a more thorough monitoring role.

  1. Temperature effects and compensation-control methods.

    Science.gov (United States)

    Xia, Dunzhu; Chen, Shuling; Wang, Shourong; Li, Hongsheng

    2009-01-01

    In the analysis of the effects of temperature on the performance of microgyroscopes, it is found that the resonant frequency of the microgyroscope decreases linearly as the temperature increases, and the quality factor changes drastically at low temperatures. Moreover, the zero bias changes greatly with temperature variations. To reduce the temperature effects on the microgyroscope, temperature compensation-control methods are proposed. In the first place, a BP (Back Propagation) neural network and polynomial fitting are utilized for building the temperature model of the microgyroscope. Considering the simplicity and real-time requirements, piecewise polynomial fitting is applied in the temperature compensation system. Then, an integral-separated PID (Proportion Integration Differentiation) control algorithm is adopted in the temperature control system, which can stabilize the temperature inside the microgyrocope in pursuing its optimal performance. Experimental results reveal that the combination of microgyroscope temperature compensation and control methods is both realizable and effective in a miniaturized microgyroscope prototype.

  2. Bjerknes compensation in the Bergen Climate Model

    Science.gov (United States)

    Outten, Stephen; Esau, Igor

    2017-10-01

    The meridional transport of heat is a critical component of the Earth's climate system. If the total heat transported by the climate system is approximately constant, then the anomalies of heat transported by the atmosphere and ocean should be approximately equal and opposite, a scenario now called Bjerknes compensation. This has previously been found in two coupled climate models, with both showing multi-decadal variability in the heat transports. This work identifies Bjerknes compensation in the Bergen Climate Model, adding to the understanding of the robust features of Bjerknes compensation in coupled climate models. The atmospheric and oceanic heat transports are investigated in the 600-year control run of a fully-coupled global climate model. The presence of Bjerknes compensation is confirmed by the strong anti-correlation and equal magnitude of the anomalies of these heat transports. The heat transport anomalies contain a signal of multi-decadal variability. Since natural variability in global heat transport could mask anthropogenic climate change signals, understanding Bjerknes compensation is of socio-economic importance. Using regression analysis the atmospheric and oceanic responses to the multi-decadal variability of the Bjerknes compensation signal are investigated. This highlights the importance of the marginal ice zones of the Greenland and Barents Seas as the critical location for coupling the atmosphere and ocean. During periods of increased heat transport in the ocean, these regions show decreased sea-ice, leading to increased fluxes and local temperatures, and giving rise to a thermal low-pressure center and a non-local high-pressure centre, thus changing the atmospheric flow on multi-decadal timescales.

  3. Gigabit Ethernet Asynchronous Clock Compensation FIFO

    Science.gov (United States)

    Duhachek, Jeff

    2012-01-01

    Clock compensation for Gigabit Ethernet is necessary because the clock recovered from the 1.25 Gb/s serial data stream has the potential to be 200 ppm slower or faster than the system clock. The serial data is converted to 10-bit parallel data at a 125 MHz rate on a clock recovered from the serial data stream. This recovered data needs to be processed by a system clock that is also running at a nominal rate of 125 MHz, but not synchronous to the recovered clock. To cross clock domains, an asynchronous FIFO (first-in-first-out) is used, with the write pointer (wprt) in the recovered clock domain and the read pointer (rptr) in the system clock domain. Because the clocks are generated from separate sources, there is potential for FIFO overflow or underflow. Clock compensation in Gigabit Ethernet is possible by taking advantage of the protocol data stream features. There are two distinct data streams that occur in Gigabit Ethernet where identical data is transmitted for a period of time. The first is configuration, which happens during auto-negotiation. The second is idle, which occurs at the end of auto-negotiation and between every packet. The identical data in the FIFO can be repeated by decrementing the read pointer, thus compensating for a FIFO that is draining too fast. The identical data in the FIFO can also be skipped by incrementing the read pointer, which compensates for a FIFO draining too slowly. The unique and novel features of this FIFO are that it works in both the idle stream and the configuration streams. The increment or decrement of the read pointer is different in the idle and compensation streams to preserve disparity. Another unique feature is that the read pointer to write pointer difference range changes between compensation and idle to minimize FIFO latency during packet transmission.

  4. Advanced linear and nonlinear compensations for 16QAM SC-400G unrepeatered transmission system

    Science.gov (United States)

    Zhang, Junwen; Yu, Jianjun; Chien, Hung-Chang

    2018-02-01

    Digital signal processing (DSP) with both linear equalization and nonlinear compensations are studied in this paper for the single-carrier 400G system based on 65-GBaud 16-quadrature amplitude modulation (QAM) signals. The 16-QAM signals are generated and pre-processed with pre-equalization (Pre-EQ) and Look-up-Table (LUT) based pre-distortion (Pre-DT) at the transmitter (Tx)-side. The implementation principle of training-based equalization and pre-distortion are presented here in this paper with experimental studies. At the receiver (Rx)-side, fiber-nonlinearity compensation based on digital backward propagation (DBP) are also utilized to further improve the transmission performances. With joint LUT-based Pre-DT and DBP-based post-compensation to mitigate the opto-electronic components and fiber nonlinearity impairments, we demonstrate the unrepeatered transmission of 1.6Tb/s based on 4-lane 400G single-carrier PDM-16QAM over 205-km SSMF without distributed amplifier.

  5. Compensation systems for low temperature applications

    CERN Document Server

    Skoczen, Balzej T

    2004-01-01

    The book is dedicated to the behaviour of ductile materials at cryogenic temperatures, structural stability issues and reliability oriented parametric optimisation of compensation systems containing the corrugated bellows. The problems of local and global stability of systems containing bellows, coupling between the low-cycle fatigue and stability as well as evolution of plastic strain fields, micro-damage and strain induced phase transformation in the corrugated shells at cryogenic temperatures are presented. As a special feature reliability oriented optimum design of compensation systems under strength, stability, fatigue and geometrical constraints is discussed. The relevant applications in the particle accelerators and cryogenic transfer lines are shown.

  6. Filament stretching rheometer: inertia compensation revisited

    DEFF Research Database (Denmark)

    Szabo, Peter; McKinley, Gareth H.

    2003-01-01

    The necessary inertia compensation used in the force balance for the filament stretching rheometer is derived for an arbitrary frame of reference. This enables the force balance to be used to extract correctly the extensional viscosity from measurements of the tensile force at either end of the e......The necessary inertia compensation used in the force balance for the filament stretching rheometer is derived for an arbitrary frame of reference. This enables the force balance to be used to extract correctly the extensional viscosity from measurements of the tensile force at either end...

  7. Trends in VBA Disability Compensation Spending

    Science.gov (United States)

    2016-06-01

    I N S T I T U T E F O R D E F E N S E A N A L Y S E S Trends in VBA Disability Compensation Spending Sarah K. Burns Kristen M. Guerrera David E...license under the clause at DFARS 252.227-7013 (a)(16) [Jun 2013]. Trends in VBA Disability Compensation Spending Sarah K. Burns Kristen M. Guerrera...53.9 billion in 2014. The most recent 15-year period shows a fundamental change in participation in the Veterans Benefit Administration ( VBA

  8. Security careers skills, compensation, and career paths

    CERN Document Server

    Walker, Stephen W

    2014-01-01

    The third edition of Security Careers is the authoritative reference for current job descriptions and pay practices of security, compliance, ethics, environmental, health and safety occupations. The job descriptions and compensation ranges in this report are drawn from research from the Foushée Group, which has been conducting this research since 1980. Security Careers includes more than 75 job descriptions for security-related positions, which range from the entry-level security guard to the top global corporate executive. It also provides four years of compensation trend data to give a th

  9. Individual Hearing Loss: Characterization, Modelling, Compensation Strategies

    DEFF Research Database (Denmark)

    Santurette, Sébastien; Dau, Torsten; Christensen-Dalsgaard, Jakob

    2016-01-01

    It is well-established that hearing loss does not only lead to a reduction of hearing sensitivity. Large individual differences are typically observed among listeners with hearing impairment in a wide range of suprathreshold auditory measures. In many cases, audiometric thresholds cannot fully...... account for such individual differences, which make it challenging to find adequate compensation strategies in hearing devices. How to characterize, model, and compensate for individual hearing loss were the main topics of the fifth International Symposium on Auditory and Audiological Research (ISAAR...

  10. Static compensators (STATCOMs) in power systems

    CERN Document Server

    Shahnia, Farhad; Ghosh, Arindam

    2014-01-01

    A static compensator (STATCOM), also known as static synchronous compensator, is a member of the flexible alternating current transmission system (FACTS) devices. It is a power-electronics based regulating device which is composed of a voltage source converter (VSC) and is shunt-connected to alternating current electricity transmission and distribution networks. The voltage source is created from a DC capacitor and the STATCOM can exchange reactive power with the network. It can also supply some active power to the network, if a DC source of power is connected across the capacitor. A STATCOM

  11. Geographical relationships and CEO compensation contracts

    Directory of Open Access Journals (Sweden)

    Junli Yu

    2017-06-01

    Full Text Available In this paper, we empirically analyze the effects that the geographical relationships between chairman and CEO have on the latter’s compensation contracts, based on samples of listed A-share private firms from 2005 to 2014. We find that geographical relationships are related to lower pay–performance sensitivity, and that the correlation mainly exists in poor performance periods, suggesting that geographical relationships weaken the effectiveness of compensation contracts. We also find that geographical relationships can be substituted by external formal institutions.

  12. DVB-T2: An Outline of HDTV and UHDTV Programmes Broadcasting

    Directory of Open Access Journals (Sweden)

    M. Milivojević

    2015-11-01

    Full Text Available Increasing of video resolution of the HD programmes requires a higher bit rate. On the other hand, a continuous enhancement of existing and introduction of new source coding techniques are evident. Technical evolution of the Digital Terrestrial Television platform improves channel coding and RF channel utilization. Some optional solutions have also been proposed. This paper discusses the possibilities of allocating HD programmes in formats expected in the near future. Performed calculations are guidance to accurate examination of the efficiency of allocating high definition programmes in the DVB-T2 multiplex, in line with existing and expected enhancements.

  13. Auditing emergency management programmes: Measuring leading indicators of programme performance.

    Science.gov (United States)

    Tomsic, Heather

    Emergency Management Programmes benefit from review and measurement against established criteria. By measuring current vs required programme elements for their actual currency, completeness and effectiveness, the resulting timely reports of achievements and documentation of identified gaps can effectively be used to rationally support prioritised improvement. Audits, with their detailed, triangulated and objectively weighted processes, are the ultimate approach in terms of programme content measurement. Although Emergency Management is often presented as a wholly separate operational mechanism, distinct and functionally different from the organisation's usual management structure, this characterisation is only completely accurate while managing an emergency itself. Otherwise, an organisation's Emergency Management Programme is embedded within that organisation and dependent upon it. Therefore, the organisation's culture and structure of management, accountability and measurement must be engaged for the programme to exist, much less improve. A wise and successful Emergency Management Coordinator does not let the separate and distinct nature of managing an emergency obscure their realisation of the need for an organisation to understand and manage all of the other programme components as part of its regular business practices. This includes its measurement. Not all organisations are sufficiently large or capable of supporting the use of an audit. This paper proposes that alternate, less formal, yet effective mechanisms can be explored, as long as they reflect and support organisational management norms, including a process of relatively informal measurement focused on the organisation's own perception of key Emergency Management Programme performance indicators.

  14. Tunable Digital Metamaterial for Broadband Vibration Isolation at Low Frequency.

    Science.gov (United States)

    Wang, Ziwei; Zhang, Quan; Zhang, Kai; Hu, Gengkai

    2016-11-01

    A 3D-printed digital metamaterial embedded with electromagnets is fabricated. Switching electromagnets between the attaching (1 bit) and detaching (0 bit) modes activates different waveguides in the metamaterial. The underlying mechanism is investigated theoretically and experimentally. The hierarchical assemblies of unit cells, mimicking digital bits, allow programmable broadening of the bandgap of the metamaterial. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  15. Focus: Digital

    DEFF Research Database (Denmark)

    Technology has been an all-important and defining element within the arts throughout the 20th century, and it has fundamentally changed the ways in which we produce and consume music. With this Focus we investigate the latest developments in the digital domain – and their pervasiveness and rapid...... production and reception of contemporary music and sound art. With ‘Digital’ we present four composers' very different answers to how technology impact their work. To Juliana Hodkinson it has become an integral part of her sonic writing. Rudiger Meyer analyses the relationships between art and design and how...... pace, which demand a closer look at the relations between arts and technology. The composers’ understanding of her occupation is challenged – and alongside, mediatisation and changes in distribution mark an incursion on solid conceptions of the artwork. Together, this means changing conditions for both...

  16. Fokus: Digital

    DEFF Research Database (Denmark)

    2014-01-01

    i det digitale domæne – udviklinger, der foregår hastigt og er gennemgribende, og som derfor kræver et nærmere blik på forholdet mellem kunsten og teknologien. Komponistens forståelse af sin metier udfordres – samtidig med at befæstede ideer om kunstværket møder modstand fra nye mediemæssige...... sammenhænge og fra forandrede distributionsformer. Dette betyder ændrede betingelser for både produktion og reception af kunstmusik og lydkunst. Med Digital tager vi udgangspunkt i fire komponisters meget forskellige bud på hvordan teknologien spiller en rolle i arbejdet. Juliana Hodkinson beskriver hvordan...

  17. Digital entrepreneurship

    DEFF Research Database (Denmark)

    Brem, Alexander; Richter, Chris; Kraus, Sascha

    2017-01-01

    What's mine is yours. An increasing number of people are participating in sharing and exchanging information, knowledge, data and goods. As research addressing the so-called ‘sharing economy’ is still in its infancy, this article aims to shed light on it. To do this, a qualitative research approach...... comprising guided interviews with 14 companies from Germany, Austria and Switzerland provides detailed insights into different aspects of the sharing economy phenomenon. Our results make a direct contribution to sharing economy research, especially regarding the new business models of start-ups. Here, we...... find a clear difference between the relevance of economic and social orientation. The latter appears to be in higher demand among customers than entrepreneurs. The increasingly digitalized environment has led to a changed living situation characterized by urbanity, openness to new solutions, changed...

  18. DIGITAL BLOOD PRESSURE MONITOR

    Directory of Open Access Journals (Sweden)

    R. Fuentes

    2004-12-01

    Full Text Available In this work we present a blood pressure monitor which measures both the high blood pressure (systolic pressure,and the low blood pressure (diastolic pressure. It is a semiautomatic meter because the inflation of the occlusivecuff is carried out in a manual way. The transducer used is a piezoresistive silicon pressure sensor integrated onchip which provides a proportional voltage to the input pressure, with a measurement range from 0 to 50 kPa (0–7.3 PSI. The oscillometric method is employed, which consists on detecting the oscillometric signal on brachialartery, being processed at each pressure step, when the cuff is gradually deflated. Signal sampling is carried out ata rate determined by the heart rate.In order to program the digital electronics of the circuit we used Altera tools, with the compiler MAX-PLUS II, andthe device selected to implement the design was an EPM7128SLC84-15 CPLD (Complex Programmable LogicDevice

  19. Robust filtering for dynamic compensation of self-powered neutron detectors

    Energy Technology Data Exchange (ETDEWEB)

    Peng, Xingjie, E-mail: pxj11@mails.tsinghua.edu.cn [Department of Engineering Physics, Tsinghua University, Beijing 100084 (China); Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu 610041 (China); Li, Qing; Zhao, Wenbo; Gong, Helin [Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu 610041 (China); Wang, Kan [Department of Engineering Physics, Tsinghua University, Beijing 100084 (China)

    2014-12-15

    Highlights: • Three dynamic compensation methods based on robust filtering theory are proposed. • Filter design problems are converted into linear matrix inequality problems. • Rhodium and Vanadium self-powered neutron detectors are used to validate the use of these three dynamic compensation methods. • The numerical simulation results show that all three methods can provide a reasonable balance between response speed and noise suppression. - Abstract: Self-powered neutron detectors (SPNDs), which are widely used in nuclear reactors to obtain core neutron flux distribution, are accurate at steady state but respond slowly to changes in neutron flux. Dynamic compensation methods are required to improve the response speed of the SPNDs and make it possible to apply the SPNDs for core monitoring and surveillance. In this paper, three digital dynamic compensation methods are proposed. All the three methods are based on the convex optimization framework using linear matrix inequalities (LMIs). The simulation results show that all three methods can provide a reasonable balance between response speed and noise suppression.

  20. Summer Student Programme

    CERN Multimedia

    2006-01-01

    Date Time Title Speaker 05/07/2006 09:15 - 10:00 Presentation of the Summer Student Programme F. CERUTTI Information on Computing Rules D. HEAGERTY Workshops presentation O. ULLALAND 10:15 - 11:00 Introduction to CERN J. ENGELEN 11:15 Film on CERN 11:00 Introduction to Particle Physics F. CLOSE 11:15 - 12:00 Accelerators (1/5) S. GILARDONI / E. METRAL 12:00 Discussion Session 7/07/2006 09:15 - 11:00 Introduction to Particle Physics F. CLOSE 11:15 - 12:00 Accelerators (2/5) S. GILARDONI / E. METRAL 12:00 Discussion Session 09:15 - 10:00 Accelerators (3/5) S. GILARDONI / E. METRAL 10:15 - 12:00 Detectors (1-2/5) O. ULLALAND 12:00 Discussion Session 11/07/2006 09:15 - 10:00 Accelerators (4/5) S. GILARDONI / E. METRAL 10:15 - 11:00 Detectors (3/5) O. ULLALAND 11:15 - 12:00 Introduction to Nuclear Physics (1/4) P. CHOMAZ P. CHOMAZ 10:15 - 11:00 Accelerators (5/5) S. GILARDONI / E. METRAL 11:15 - 12:00 Detectors (4/5) O. ULLALAND 12:00 Discus...

  1. Management and Communication programme

    CERN Multimedia

    Nathalie Dumeaux

    2005-01-01

    We are pleased to announce the launch of three new courses in the Management and Communication programme: 1.     Managing Time (Open to all Staff Members) The objectives are: To enhance your personal effectiveness through better organisation skills To acquire ways of making the most of your time through improved work habits To reduce stress For the description of this course, please see:  http://humanresources.web.cern.ch/humanresources/external/training/MANCO/P9798/S8E_e.asp 2.     Service Orientation (Open to all Staff Members working in a service-related function) The objectives are: To understand the key elements in an effective client/service provider relationship To develop a client focused approach to providing services For the description of this course, please see:  http://humanresources.web.cern.ch/humanresources/external/training/MANCO/P9798/serv_e.asp 3.   Introduction to Leadership (Open to Staff in Career Paths E & above, including newly appointed supervisors and Sect...

  2. Management and Communication programme

    CERN Multimedia

    Nathalie Dumeaux

    2005-01-01

    We are pleased to announce the launch of three new courses in the Management and Communication programme: 1.     Managing Time (Open to all Staff Members) The objectives are: To enhance your personal effectiveness through better organisation skills To acquire ways of making the most of your time through improved work habits To reduce stress For the description of this course, please see:  http://humanresources.web.cern.ch/humanresources/external/training/MANCO/P9798/S8E_e.asp 2.     Service Orientation (Open to all Staff Members working in a service-related function) The objectives are: To understand the key elements in an effective client/service provider relationship To develop a client focused approach to providing services For the description of this course, please see:  http://humanresources.web.cern.ch/humanresources/external/training/MANCO/P9798/serv_e.asp 3.   Introduction to Leadership (Open to Staff in Career Paths E & above, including newly appointed supervisors and Secti...

  3. SUMMER STUDENT LECTURE PROGRAMME

    CERN Multimedia

    Françoise Benz

    2002-01-01

    SUMMER STUDENT LECTURE PROGRAMME Main Auditorium, bldg. 500   DATE TIME LECTURER TITLE Monday 29 July 09:15 - 10:00 R. RATTAZZI Beyond the Standard Model (3/3) 10:15 - 11:00 P. WELLS Experimental test of the SM - LEP (3/3) 11:15 - 12:00 P. WELLS Discussion Session 14:00 - 16:00 R. ASSMANN The CLIC Concept for a Future Particle Collider at the Energy Frontier Tuesday 30 July 09:15 - 10:00 F. ANTINORI Heavy Ions (1/2) 10:15 - 12:00 F. DYDAK Neutrino Physics (1&2/4) Wednesday 31 July  09:15 - 10:00 F. ANTINORI Heavy Ions (2/2) 10:15 - 11:00 F. DYDAK Neutrino Physics (3/4) 11:15 - 12:00 F. DYDAK / F. ANTINORI Discussion Session Thursday 1 August 09:15 - 10:00 T. NAKADA CP Violation (1/4) 10:15 - 11:00 F. DYDAK Neutrino Physics (4/4) 11:15 - 12:00 F. BEDESCHI Experimental test of the SM Tevatron (1/2) Friday 2 August 09:15 - 10:00 T. NAKADA CP Violation (2/4) 10:15 ? 11:00 F. BEDESCHI Experimental test of the SM Tevatron (2/2) 11:15 ? 12:00 F. BEDESCHI / T. NAKADA Di...

  4. FPGAs for software programmers

    CERN Document Server

    Hannig, Frank; Ziener, Daniel

    2016-01-01

    This book makes powerful Field Programmable Gate Array (FPGA) and reconfigurable technology accessible to software engineers by covering different state-of-the-art high-level synthesis approaches (e.g., OpenCL and several C-to-gates compilers). It introduces FPGA technology, its programming model, and how various applications can be implemented on FPGAs without going through low-level hardware design phases. Readers will get a realistic sense for problems that are suited for FPGAs and how to implement them from a software designer’s point of view. The authors demonstrate that FPGAs and their programming model reflect the needs of stream processing problems much better than traditional CPU or GPU architectures, making them well-suited for a wide variety of systems, from embedded systems performing sensor processing to large setups for Big Data number crunching. This book serves as an invaluable tool for software designers and FPGA design engineers who are interested in high design productivity through behavi...

  5. Photovoltaic programme, edition 2004

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-07-01

    This comprehensive publication issued by the Swiss Federal Office of Energy's Photovoltaics (PV) Programme presents an overview (in English) of activities and projects in the photovoltaics research and pilot and demonstration areas in Switzerland for the year 2003. Progress in future solar cell technologies as well as in the area of modules, building integration and system technologies is summarised. Also, national and international co-operation and multi-national pilot and demonstration projects are commented on. Associated projects such as eco-balances for PV systems, forecasting and modelling tools as well as system monitoring tools are discussed. In the area of pilot and demonstration projects, component development, PV integration in sloping roofs, on flat roofs and on facades as well as further PV plant are looked at. Also, measurement campaigns, studies, statistics and other PV-related topics are summarised. This volume presents a list of 92 projects in the PV area including the appropriate Internet links and is completed with a collection of project abstracts.

  6. Summer Student Lecture Programme

    CERN Multimedia

    2004-01-01

    Main Auditorium, bldg. 500 More Information DATE TIME LECTURER TITLE Wednesday 7 July 09:15 - 10:00 L. Fayard, O. Ullaland, D. Heagerty (CERN) Programme Presentation Workshops presentation Information on Computing Rules 10:15 - 11:00 R. Aymar (CERN) Introduction to CERN (1/2) 11:15 - 12:00 J. Engelen (CERN) Introduction to CERN (2/2) 15:00 - 16:30 H. Menzel (CERN) An Introduction to Radiation Protection DATE TIME LECTURER TITLE Thursday 8 july 09:15 - 10:00 L. Di Lella (CERN) Introduction to Particle Physics (1/4) 10:15 - 11:00 L. Di Lella (CERN) Introduction to Particle Physics (2/4) 11:15 - 12:00 P. Chomaz (GANIL / CERN) Fundamental questions in modern nuclear physics: The challenge of exotic nuclei (1/2) DATE TIME LECTURER TITLE Friday 9 July 09:15 - 10:00 L. Di Lella (CERN) Introduction to Particle Physics (3/4) 10:15 - 11:00 P. Chomaz (GANIL / CERN) Fundamental questions in modern nuclear physics: The challenge of exotic nuclei (2/2) 11:15 - 12:00 P....

  7. South African southern ocean research programme

    CSIR Research Space (South Africa)

    SASCAR

    1987-01-01

    Full Text Available This document describes the South African National Antarctic Research Programme's (SANARP) physical, chemical and biological Southern Ocean research programme. The programme has three main components: ecological studies of the Prince Edward Islands...

  8. USNA DIGITAL FORENSICS LAB

    Data.gov (United States)

    Federal Laboratory Consortium — To enable Digital Forensics and Computer Security research and educational opportunities across majors and departments. Lab MissionEstablish and maintain a Digital...

  9. Journal of digital information

    National Research Council Canada - National Science Library

    1990-01-01

    Contains articles, book reviews and lab reports dealing with digital libraries, hypermedia systems, intelligent agents, information management, interfaces to digital information, social consequences...

  10. Adapting Nepal's polio eradication programme.

    Science.gov (United States)

    Paudel, Krishna P; Hampton, Lee M; Gurung, Santosh; Bohara, Rajendra; Rai, Indra K; Anaokar, Sameer; Swift, Rachel D; Cochi, Stephen

    2017-03-01

    Many countries have weak disease surveillance and immunization systems. The elimination of polio creates an opportunity to use staff and assets from the polio eradication programme to control other vaccine-preventable diseases and improve disease surveillance and immunization systems. In 2003, the active surveillance system of Nepal's polio eradication programme began to report on measles and neonatal tetanus cases. Japanese encephalitis and rubella cases were added to the surveillance system in 2004. Staff from the programme aided the development and implementation of government immunization policies, helped launch vaccination campaigns, and trained government staff in reporting practices and vaccine management. Nepal eliminated indigenous polio in 2000, and controlled outbreaks caused by polio importations between 2005 and 2010. In 2014, the surveillance activities had expanded to 299 sites, with active surveillance for measles, rubella and neonatal tetanus, including weekly visits from 15 surveillance medical officers. Sentinel surveillance for Japanese encephalitis consisted of 132 sites. Since 2002, staff from the eradication programme have helped to introduce six new vaccines and helped to secure funding from Gavi, the Vaccine Alliance. Staff have also assisted in responding to other health events in the country. By expanding the activities of its polio eradication programme, Nepal has improved its surveillance and immunization systems and increased vaccination coverage of other vaccine-preventable diseases. Continued donor support, a close collaboration with the Expanded Programme on Immunization, and the retention of the polio eradication programme's skilled workforce were important for this expansion.

  11. Compensation Trends into the 21st Century.

    Science.gov (United States)

    Stelluto, George L.; Klein, Deborah P.

    1990-01-01

    Dramatic changes in the work force and society--increasing numbers of women workers, early retirement, structural changes in the economy, and changes in employer-employee relationships--have had substantial impact on the compensation package. These trends point to continued changes in pay, paid leave, insurance, and retirement and savings plans.…

  12. 76 FR 27959 - Investment Adviser Performance Compensation

    Science.gov (United States)

    2011-05-13

    ... COMMISSION 17 CFR Part 275 RIN 3235-AK71 Investment Adviser Performance Compensation AGENCY: Securities and... amount tests in the rule under the Investment Advisers Act of 1940 that permits investment advisers to... Director, at 202-551-6792, Office of Regulatory Policy, Division of Investment Management, Securities and...

  13. Compensation of regional unemployment in housing markets

    NARCIS (Netherlands)

    Vermeulen, W.; van Ommeren, J.N.

    2008-01-01

    Why are regional unemployment differentials in Europe so persistent if, as the wage curve literature demonstrates, there is no compensation through wages? Using Urban Audit data for 142 cities over 12 EU countries, as well as a Dutch household survey, we estimate relationships between local labour

  14. 32 CFR 196.515 - Compensation.

    Science.gov (United States)

    2010-07-01

    ... NONDISCRIMINATION ON THE BASIS OF SEX IN EDUCATION PROGRAMS OR ACTIVITIES RECEIVING FEDERAL FINANCIAL ASSISTANCE Discrimination on the Basis of Sex in Employment in Education Programs or Activities Prohibited § 196.515... distinctions in rates of pay or other compensation; (b) Results in the payment of wages to employees of one sex...

  15. 38 CFR 23.515 - Compensation.

    Science.gov (United States)

    2010-07-01

    ...) NONDISCRIMINATION ON THE BASIS OF SEX IN EDUCATION PROGRAMS OR ACTIVITIES RECEIVING FEDERAL FINANCIAL ASSISTANCE Discrimination on the Basis of Sex in Employment in Education Programs or Activities Prohibited § 23.515... distinctions in rates of pay or other compensation; (b) Results in the payment of wages to employees of one sex...

  16. Hybrid VAR compensator with improved efficiency

    Directory of Open Access Journals (Sweden)

    V. V. Burlaka

    2015-03-01

    Full Text Available In modern electrical networks thyristor-switched capacitors (TSC are most used devices for VAR compensation. These devices don’t contain rotating parts and mechanical contacts, provide a stepwise control of reactive power and no generation of harmonics to the network. However, with the help of TSC it’s not possible to ensure smooth control of reactive power and capacitor banks (CB are exposed to the negative impact of higher harmonic components of the network voltage. Hybrid VAR compensator don’t have such drawbacks. It consists of active filter (AF and capacitor bank with discrete regulation. The main drawback of such systems is the necessity of accessing all six terminals of CB, while most of them are manufactured with three terminals, internally delta-connected. In the article, the topology and control system of hybrid VAR compensator free from beforementioned drawback, is proposed. The control system provides operating modes of overcompensation or undercompensation reactive power. VAR distribution regulator performs redistribution of reactive power between active filter and capacitor banks with the condition to minimize active filter’s power. Scheme of the hybrid VAR compensator, which includes a three-phase three-terminal delta-connected capacitor banks, is shown. Proposed approach allows to provide smooth control of reactive power, isolate the capacitor bank from harmonic currents and use a more effective low-voltage power components

  17. Paraxial charge compensator for electron cryomicroscopy

    Energy Technology Data Exchange (ETDEWEB)

    Berriman, John A. [Division of Physical Biochemistry, MRC National Institute for Medical Research, The Ridgeway, Mill Hill, London, NW7 1AA (United Kingdom); Rosenthal, Peter B., E-mail: peter.rosenthal@nimr.mrc.ac.uk [Division of Physical Biochemistry, MRC National Institute for Medical Research, The Ridgeway, Mill Hill, London, NW7 1AA (United Kingdom)

    2012-05-15

    We describe a multi-hole condenser aperture for the production of several electron beams in the transmission electron microscope (TEM) making it possible to simultaneously image and irradiate spatially separated regions of a specimen. When the specimen is a thin film of vitreous ice suspended over a holey carbon film, simultaneous irradiation of the adjacent carbon support with the off-axis beam compensates for some of the effects of charging in the image formed by a beam irradiating only the ice. Because the intervening region is not irradiated, charge-neutralization of frozen-hydrated specimens can occur by a through-space mechanism such as the emission of secondary electrons from a grounded carbon support film. We use paraxial charge compensation (PCC) to control the amount of charge build-up on the specimen and observe the effects of charge on images. The multi-hole aperture thus provides a tool for investigating the mechanism of charging and charge mitigation during the imaging of radiation sensitive biological specimens by cryomicroscopy. -- Highlights: Black-Right-Pointing-Pointer A multi-hole condenser aperture produces multiple (paraxial) beams in TEM. Black-Right-Pointing-Pointer Paraxial charge compensation is used to study electron-optical effects of charging. Black-Right-Pointing-Pointer Emission of secondary electrons controls charging by a through space mechanism. Black-Right-Pointing-Pointer Paraxial beams compensate for charging effects in frozen-hydrated specimens.

  18. Lossless Compression of Video using Motion Compensation

    DEFF Research Database (Denmark)

    Martins, Bo; Forchhammer, Søren

    1998-01-01

    We investigate lossless coding of video using predictive coding andmotion compensation. The methods incorporate state-of-the-art lossless techniques such ascontext based prediction and bias cancellation, Golomb coding, high resolution motion field estimation,3d-dimensional predictors, prediction ...

  19. One-Way Temperature Compensated Fiber Link

    Science.gov (United States)

    2011-05-01

    individual compensated links. [1] R. Wynands and S. Weyers, “Atomic Fountain Clocks,” Metrologia , vol. 42, pp. S64-S79, 2005. [2] A. D. Ludlow...3] A. Bauch, et al. ,”Comparison Between Frequency Standards oin Europe and the USA at the 10-15 Uncertainty Level,” Metrologia , vol. 43, pp.109

  20. ADE 2000 Survey of Department Chair Compensation.

    Science.gov (United States)

    ADE Bulletin, 2002

    2002-01-01

    Surveys the types of support and compensation that chairs in the Association of Departments of English (ADE) community receive. Notes that in the survey larger institutions and those granting advanced degrees are overrepresented, as they are in the ADE membership. Presents results of the surveys in 17 different tables. (SG)

  1. Global Compensation Specialist | IDRC - International Development ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Analyze global compensation trends in the market, conduct salary surveys and benefit reviews for Ottawa hired staff (OHS) and locally-engaged staff (LES) in the regions where IDRC is present, analyze insurance coverage and pension plans and make recommendations to management on the best course of action.

  2. Evaluation of the implementation of Employees Compensation ...

    African Journals Online (AJOL)

    Since the passage into law of the Employees Compensation Act in 2011, countless cases of workplace accidents have occurred in Nigeria. Yet there seems to be no succour for the Nigerian worker as many state governments have either refused to register with or do not have the will power to implement the legislation in ...

  3. Rectangular Laser Resonators with Astigmatic Compensation

    DEFF Research Database (Denmark)

    Skettrup, Torben

    2005-01-01

    An investigation of rectangular resonators with a view to the compensation of astigmatism has been performed. In order to have beam waists placed at the same positions in the tangential and sagittal planes, pairs of equal mirrors were considered. It was found that at least two concave mirrors are...

  4. Wire compensation: Performance, SPS MDs, pulsed system

    CERN Document Server

    Dorda, U

    2008-01-01

    A wire compensation (BBLR) scheme has been proposed in order to improve the long range beam-beam performance of the nominal LHC and its phase 1 and phase 2 upgrades[1]. In this paper we present experimental experience of the CERN SPS wires (BBLR) and report on progress with the RF BBLR.

  5. T1 VSAT Fade Compensation Statistical Results

    Science.gov (United States)

    Johnson, Sandra K.; Acosta, Roberto; Ugweje, Oke

    2000-01-01

    New satellite communication systems are steadily seeking to use higher frequency bands to accommodate the requirements for additional capacity. At these higher frequencies, propagation impairments that did not significantly affect the signal at lower frequencies begin to have considerable impact. In Ka-band. the next logical commercial frequency band to be used for satellite communication, attenuation of the signal due to rain is a primary concern. An experimental satellite built by NASA, the Advanced Communication Technology Satellite (ACTS). launched in September 1993, is the first U.S. communication satellite operating in the Ka-band. In addition to higher carrier frequencies, a number of other new technologies, including on-board baseband processing. multiple beam antennas, and rain fade detection and compensation techniques, were designed into the ACTS. Verification experiments have been conducted since the launch to characterize the new technologies. The focus of this paper is to characterize the method used by the ACTS TI Very Small Aperture Terminal (TI VSAT) ground stations in detecting the presence of fade in the communication signal and to adaptively compensate for it by the addition of burst rate reduction and forward error correction. Measured data obtained from the ACTS program was used to validate the compensation technique. A software process was developed and demonstrated to statistically characterize the increased availability achieved by the compensation techniques in terms of the bit error rate time enhancement factor. Several improvements to the ACTS technique are discussed and possible implementations for future Ka band system are offered.

  6. Granulate of stainless steel as compensator material

    NARCIS (Netherlands)

    J.P.C. van Santvoort (J. P C)

    1995-01-01

    textabstractCompensators produced with computer controlled milling devices usually consist of a styrofoam mould, filled with an appropriate material. We investigated granulate of stainless steel as filling material. This cheap, easy to use, clean and re-usable material can be obtained with an

  7. 22 CFR 146.515 - Compensation.

    Science.gov (United States)

    2010-04-01

    ... employees of the opposite sex for equal work on jobs the performance of which requires equal skill, effort... Relations DEPARTMENT OF STATE CIVIL RIGHTS NONDISCRIMINATION ON THE BASIS OF SEX IN EDUCATION PROGRAMS OR... Education Programs or Activities Prohibited § 146.515 Compensation. A recipient shall not make or enforce...

  8. 22 CFR 229.515 - Compensation.

    Science.gov (United States)

    2010-04-01

    ... employees of the opposite sex for equal work on jobs the performance of which requires equal skill, effort... Relations AGENCY FOR INTERNATIONAL DEVELOPMENT NONDISCRIMINATION ON THE BASIS OF SEX IN EDUCATION PROGRAMS... in Education Programs or Activities Prohibited § 229.515 Compensation. A recipient shall not make or...

  9. Education, Variation in Earnings, and Nonmonetary Compensation.

    Science.gov (United States)

    Mathios, Alan D.

    1989-01-01

    The National Academy of Sciences-National Research Council Twin Offspring data support the proposition that for those with low levels of education, earnings may be an adequate proxy for compensation, whereas the opposite holds for highly educated people. (Author/JOW)

  10. 24 CFR 3.515 - Compensation.

    Science.gov (United States)

    2010-04-01

    ... 24 Housing and Urban Development 1 2010-04-01 2010-04-01 false Compensation. 3.515 Section 3.515 Housing and Urban Development Office of the Secretary, Department of Housing and Urban Development NONDISCRIMINATION ON THE BASIS OF SEX IN EDUCATION PROGRAMS OR ACTIVITIES RECEIVING FEDERAL FINANCIAL ASSISTANCE...

  11. 77 FR 58469 - Plum Pox Compensation

    Science.gov (United States)

    2012-09-21

    ... spread of plum pox virus (PPV) into uninfected areas of the United States. In addition to the quarantine... Animal and Plant Health Inspection Service 7 CFR Part 301 RIN 0579-AD58 Plum Pox Compensation AGENCY... adopting as a final rule, without change, an interim rule that amended the plum pox regulations to provide...

  12. The compensating income variation of cardiovascular disease

    NARCIS (Netherlands)

    Groot, W.; Maassen van den Brink, H.

    2006-01-01

    This paper uses longitudinal data from the British Household Panel Survey to calculate the compensating income variation (CIV) of cardiovascular disease. It is found that the CIV decreases with age and is higher for men than for women. For women the estimated CIV is similar to those calculated by

  13. Software compensation in particle flow reconstruction

    Energy Technology Data Exchange (ETDEWEB)

    Tran, Huong Lan; Krueger, Katja; Sefkow, Felix [Deutsches Elektronen-Synchrotron DESY, Hamburg (Germany); Green, Steven; Marshall, John; Thomson, Mark [Cavendish Laboratory, Cambridge (United Kingdom); Simon, Frank [Max-Planck-Institut fuer Physik, Muenchen (Germany)

    2017-10-15

    The particle flow approach to calorimetry benefits from highly granular calorimeters and sophisticated software algorithms in order to reconstruct and identify individual particles in complex event topologies. The high spatial granularity, together with analogue energy information, can be further exploited in software compensation. In this approach, the local energy density is used to discriminate electromagnetic and purely hadronic sub-showers within hadron showers in the detector to improve the energy resolution for single particles by correcting for the intrinsic non-compensation of the calorimeter system. This improvement in the single particle energy resolution also results in a better overall jet energy resolution by improving the energy measurement of identified neutral hadrons and improvements in the pattern recognition stage by a more accurate matching of calorimeter energies to tracker measurements. This paper describes the software compensation technique and its implementation in particle flow reconstruction with the Pandora Particle Flow Algorithm (PandoraPFA). The impact of software compensation on the choice of optimal transverse granularity for the analogue hadronic calorimeter option of the International Large Detector (ILD) concept is also discussed. (orig.)

  14. Hybrid compensation arrangement in dispersed generation systems

    DEFF Research Database (Denmark)

    Chen, Zhe; Blaabjerg, Frede; Pedersen, John Kim

    2005-01-01

    are performed for a power system including the dispersed generation units connected into the system through power electronic converters and diode rectifier loads, which produce the distorted waveforms. The simulation results have demonstrated that good compensation effects can be achieved by using the combined...

  15. Temperature-Compensated Clock Skew Adjustment

    Directory of Open Access Journals (Sweden)

    Joaquín Olivares

    2013-08-01

    Full Text Available This work analyzes several drift compensation mechanisms in wireless sensor networks (WSN. Temperature is an environmental factor that greatly affects oscillators shipped in every WSN mote. This behavior creates the need of improving drift compensation mechanisms in synchronization protocols. Using the Flooding Time Synchronization Protocol (FTSP, this work demonstrates that crystal oscillators are affected by temperature variations. Thus, the influence of temperature provokes a low performance of FTSP in changing conditions of temperature. This article proposes an innovative correction factor that minimizes the impact of temperature in the clock skew. By means of this factor, two new mechanisms are proposed in this paper: the Adjusted Temperature (AT and the Advanced Adjusted Temperature (A2T. These mechanisms have been combined with FTSP to produce AT-FTSP and A2T-FTSP. Both have been tested in a network of TelosB motes running TinyOS. Results show that both AT-FTSP and A2T-FTSP improve the average synchronization errors compared to FTSP and other temperature-compensated protocols (Environment-Aware Clock Skew Estimation and Synchronization for WSN (EACS and Temperature Compensated Time Synchronization (TCTS.

  16. Manager, Global Compensation | IDRC - International Development ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    The incumbent is a full member of the Division's management team and participates in key strategic and operational discussions and decisions on human resources issues, priorities, systems, processes, performance indicators and budgets. The Manager directs and overseas payroll services and global compensation ...

  17. 33 CFR 136.235 - Compensation allowable.

    Science.gov (United States)

    2010-07-01

    ... allowable. The amount of compensation allowable is limited to the actual net reduction or loss of earnings or profits suffered. Calculations for net reductions or losses must clearly reflect adjustments for— (a) All income resulting from the incident; (b) All income from alternative employment or business...

  18. Can We Teach Digital Natives Digital Literacy?

    Science.gov (United States)

    Ng, Wan

    2012-01-01

    In recent years, there has been much debate about the concept of digital natives, in particular the differences between the digital natives' knowledge and adoption of digital technologies in informal versus formal educational contexts. This paper investigates the knowledge about educational technologies of a group of undergraduate students…

  19. Implementing universal vaccination programmes: Spain.

    Science.gov (United States)

    de la Torre, J; Esteban, R

    1995-01-01

    Until 1990, the immunization policy against hepatitis B in Spain was selective high-risk vaccination. That policy failed to reduce the incidence of hepatitis B and the prevalence rates of chronic carriers. In 1991, Catalonia began a universal immunization programme targeted at 12-year-olds. Six other regions (Castilla-León, Valencia, Extramadura, Navarra, the Balearic Islands and Rioja) introduced vaccination programmes in 1992. In 1993, three more regions (Galicia, Castilla-La-Mancha and Pais Vasco) began immunizing young adolescents. This means that 12-year-olds in Spain are now included in vaccination programmes against hepatitis B.

  20. A Statistical Programme Assignment Model

    DEFF Research Database (Denmark)

    Rosholm, Michael; Staghøj, Jonas; Svarer, Michael

    When treatment effects of active labour market programmes are heterogeneous in an observable way  across the population, the allocation of the unemployed into different programmes becomes a particularly  important issue. In this paper, we present a statistical model designed to improve the present...... duration of unemployment spells may result if a statistical programme assignment model is introduced. We discuss several issues regarding the  plementation of such a system, especially the interplay between the statistical model and  case workers....

  1. Automatic TLI recognition system, programmer`s guide

    Energy Technology Data Exchange (ETDEWEB)

    Lassahn, G.D.

    1997-02-01

    This report describes the software of an automatic target recognition system (version 14), from a programmer`s point of view. The intent is to provide information that will help people who wish to modify the software. In separate volumes are a general description of the ATR system, Automatic TLI Recognition System, General Description, and a user`s manual, Automatic TLI Recognition System, User`s Guide. 2 refs.

  2. A novel input-parasitic compensation technique for a nanopore-based CMOS DNA detection sensor

    Science.gov (United States)

    Kim, Jungsuk

    2016-12-01

    This paper presents a novel input-parasitic compensation (IPC) technique for a nanopore-based complementary metal-oxide-semiconductor (CMOS) DNA detection sensor. A resistive-feedback transimpedance amplifier is typically adopted as the headstage of a DNA detection sensor to amplify the minute ionic currents generated from a nanopore and convert them to a readable voltage range for digitization. But, parasitic capacitances arising from the headstage input and the nanopore often cause headstage saturation during nanopore sensing, thereby resulting in significant DNA data loss. To compensate for the unwanted saturation, in this work, we propose an area-efficient and automated IPC technique, customized for a low-noise DNA detection sensor, fabricated using a 0.35- μm CMOS process; we demonstrated this prototype in a benchtop test using an α-hemolysin ( α-HL) protein nanopore.

  3. The Improved Kriging Interpolation Algorithm for Local Underwater Terrain Based on Fractal Compensation

    Directory of Open Access Journals (Sweden)

    Pengyun Chen

    2014-01-01

    Full Text Available The interpolation-reconstruction of local underwater terrain using the underwater digital terrain map (UDTM is an important step for building an underwater terrain matching unit and directly affects the accuracy of underwater terrain matching navigation. The Kriging method is often used in terrain interpolation, but, with this method, the local terrain features are often lost. Therefore, the accuracy cannot meet the requirements of practical application. Analysis of the geographical features is performed on the basis of the randomness and self-similarity of underwater terrain. We extract the fractal features of local underwater terrain with the fractal Brownian motion model, compensating for the possible errors of the Kriging method with fractal theory. We then put forward an improved Kriging interpolation method based on this fractal compensation. Interpolation-reconstruction tests show that the method can simulate the real underwater terrain features well and that it has good usability.

  4. Presbyopia compensation: looking for cortical predictors.

    Science.gov (United States)

    Imbeau, Léa; Majzoub, Sadi; Thillay, Alix; Bonnet-Brilhault, Frederique; Pisella, Pierre-Jean; Batty, Magali

    2017-02-01

    New surgical techniques have recently been developed in order to compensate for visual impairment and to improve visual comfort for patients with presbyopia. However, the results are still variable, depending on the correction modality used and/or the patient. The main purpose of this study was to identify predictive electrophysiological markers of postcorrection visual comfort for patients with presbyopia. Thirteen patients with presbyopia (aged between 45 and 60 years) received successive randomised presbyopia compensation with contact lenses supplying monovision (one eye corrected for distance, the other for near vision) and simultaneous vision (progressive lenses). The period for each type of correction lasted for 3 weeks, with a 2-week break without any presbyopia compensation between the two test phases. Examinations were performed at entry (T0) and after each correction modality (Tmono and Tsimult). They included testing for near and distance visual acuity, stereoacuity, binocular contrast sensitivity and electrophysiological recordings (monocular and binocular visual evoked potentials). Follow-up showed no significant differences between the two compensation modalities for either clinical or electrophysiological criteria. However, a significant correlation was found between the difference in TNO score (monovision-simultaneous vision) and the P100 latency evoked by the binocular pattern at T0, suggesting that late P100 latency could be associated with a lesser degree of decrease in stereoacuity with monovision. While our findings do not permit decisions regarding the superiority of one type of compensation over another, these preliminary results support using the P100 latency evoked by binocular patterns as a predictor of postcompensation stereoacuity. NCT02444130, Pre-results. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/.

  5. Space Digital Controller for Improved Motor Control

    Science.gov (United States)

    Alves-Nunes, Samuel; Daras, Gaetan; Dehez, Bruno; Maillard, Christophe; Bekemans, Marc; Michel, Raymond

    2014-08-01

    Performing digital motor control into space equipment is a new challenge. The new DPC (Digital Programmable Controller) is the first chip that we can use as a micro-controller, allowing us to drive motors with digital control schemes. In this paper, the digital control of hybrid stepper motors is considered. This kind of motor is used for solar array rotation and antenna actuation. New digital control technology brings a lot of advantages, allowing an important reduction of thermal losses inside the motor, and a reduction of thermal constraints on power drive electronic components. The opportunity to drive motors with a digital controller also brings many new functionalities like post-failure torque analysis, micro- vibrations and cogging torque reduction, or electro- mechanical damping of solar array oscillations. To evaluate the performance of the system, Field-Oriented Control (FOC) is implemented on a hybrid stepper motor. A test-bench, made of an active load, has been made to emulate the mechanical behaviour of the solar array, by the use of a torsionally-compliant model. The experimental results show that we can drastically reduce electrical power consumption, compared with the currently used open-loop control scheme.

  6. Comparison of performance of transcranial contralateral routing of signal, pre-implanted trimmer digital and digital bone anchored hearing aid in adults with unilateral hearing loss

    Directory of Open Access Journals (Sweden)

    Neelamegarajan Devi

    2015-06-01

    Full Text Available Individuals with unilateral hearing loss of severe-profound degree face listening difficulties while localizing a sound source and while perceiving speech in the presence of noise. The objective was to compare the efficacy of the digitally programmable bone anchored hearing aid (BAHA, trimmer digital BAHA and the transcranial contralateral routing of signal (T-CROS in improving the listening performance in adults with unilateral hearing loss. Twenty-four adults with unilateral hearing loss was assessed for sound field thresholds, speech perception performance in quiet and noise (direct and indirect conditions and the subjective quality rating of speech in unaided and aided with either T-CROS or digitally programmable BAHA or trimmer digital BAHA attached to the headband. Results indicated that the participants performed better with both the digitally programmable and the trimmer digital BAHA than the T-CROS in both quiet and noise. However, the digitally programmable BAHA performed better when the speech arrived from the poorer ear side. The current study helps in prioritizing the hearing amplification devices for the trial and also helps in arriving at the appropriate hearing amplification device for the individuals with unilateral hearing loss.

  7. Comparison of Performance of Transcranial Contralateral Routing of Signal, Pre-Implanted Trimmer Digital and Digital Bone Anchored Hearing Aid in Adults with Unilateral Hearing Loss.

    Science.gov (United States)

    Devi, Neelamegarajan; Chatni, Suma; Ramadevi, Kasetty Jagannathaiah S; Fakruddin, Darga Baba

    2015-06-11

    Individuals with unilateral hearing loss of severe-profound degree face listening difficulties while localizing a sound source and while perceiving speech in the presence of noise. The objective was to compare the efficacy of the digitally programmable bone anchored hearing aid (BAHA), trimmer digital BAHA and the transcranial contralateral routing of signal (T-CROS) in improving the listening performance in adults with unilateral hearing loss. Twenty-four adults with unilateral hearing loss was assessed for sound field thresholds, speech perception performance in quiet and noise (direct and indirect conditions) and the subjective quality rating of speech in unaided and aided with either T-CROS or digitally programmable BAHA or trimmer digital BAHA attached to the headband. Results indicated that the participants performed better with both the digitally programmable and the trimmer digital BAHA than the T-CROS in both quiet and noise. However, the digitally programmable BAHA performed better when the speech arrived from the poorer ear side. The current study helps in prioritizing the hearing amplification devices for the trial and also helps in arriving at the appropriate hearing amplification device for the individuals with unilateral hearing loss.

  8. Digital forensics digital evidence in criminal investigations

    CERN Document Server

    Marshall, Angus McKenzie

    2009-01-01

    The vast majority of modern criminal investigations involve some element of digital evidence, from mobile phones, computers, CCTV and other devices. Digital Forensics: Digital Evidence in Criminal Investigations provides the reader with a better understanding of how digital evidence complements "traditional" scientific evidence and examines how it can be used more effectively and efficiently in a range of investigations. Taking a new approach to the topic, this book presents digital evidence as an adjunct to other types of evidence and discusses how it can be deployed effectively in s

  9. Compensation of the Meyer‐Neldel Compensation Law for H diffusion in minerals

    National Research Council Canada - National Science Library

    Jones, Alan G

    2014-01-01

    The Meyer‐Neldel Rule (MNR), or compensation law, linearly relates the preexponent term to the logarithm of the excitation enthalpy for any process that is thermally driven in an Arrhenian manner, and MNR fits can be used...

  10. 75 FR 66589 - Shareholder Approval of Executive Compensation and Golden Parachute Compensation

    Science.gov (United States)

    2010-10-28

    ... the Economy, Burden on Competition, and Promotion of Efficiency, Competition, and Capital Formation... compensation policies and practices as they relate to risk management and risk-taking incentives, these...

  11. Saccadic compensation for reflexive optokinetic nystagmus just as good as compensation for volitional pursuit.

    Science.gov (United States)

    Harrison, James J; Freeman, Tom C A; Sumner, Petroc

    2015-01-26

    The natural viewing behavior of moving observers ideally requires target-selecting saccades to be coordinated with automatic gaze-stabilizing eye movements such as optokinetic nystagmus. However, it is unknown whether saccade plans can compensate for reflexive movement of the eye during the variable saccade latency period, and it is unclear whether reflexive nystagmus is even accompanied by extraretinal signals carrying the eye movement information that could potentially underpin such compensation. We show that saccades do partially compensate for optokinetic nystagmus that displaces the eye during the saccade latency period. Moreover, this compensation is as good as for displacements due to voluntary smooth pursuit. In other words, the saccade system appears to be as well coordinated with reflexive nystagmus as it is with volitional pursuit, which in turn implies that extraretinal signals accompany nystagmus and are just as informative as those accompanying pursuit. © 2015 ARVO.

  12. The biomedicalisation of war and military remains: US nuclear worker compensation in the 'post-Cold War'.

    Science.gov (United States)

    Krupar, Shiloh

    2013-01-01

    This paper analyses the recent legislation and administration of United States nuclear worker compensation--the Energy Employees Occupational Illness Compensation Programme Act (EEOICPA)--in order to show the domestic impacts of war and the social order that has been established to respond to the Cold War legacy of occupational exposures, illness, and death. Examining the epistemological politics and material effects of compensation, an insufficiently analysed aspect of the Cold War, I argue that the system designed to redress the occupational exposures of nuclear workers accomplishes something else: obscuring the ethical problem of misinformation and missing data from the Cold War era; mobilising an industry of knowledge and market-economic opportunities in the arena of biomedical exposure assessment and dose reconstruction for parts of the former US nuclear complex; and, lastly, dematerialising and depoliticising geographies of the Cold War and its differential impacts through an individualistic epidemiological reprocessing of radiation exposures. The paper shows how the general claims procedure, combined with two methods mandated by EEOICPA--dose reconstruction and the probability of causation--effectively de-link workers from each other, and worksites from homes, pin compensation to a cost-benefit logic, implicate genuine scientific complexity and uncertainty in an ongoing denial of the toxic legacies of war, and ethically undermine the social justice aims of the legislation. The article ends by considering some of the ways that US nuclear workers have responded to living as the remains of both US bomb production and the compensation system.

  13. Digital dannelse

    DEFF Research Database (Denmark)

    Bundsgaard, Jeppe

    2012-01-01

    I al vores iver efter at få presset nogle flere digitale dimser ind i skolen, er vi i fare for at glemme hvad det er vi skal med disse dimser. Der er store forventninger til at de kan gøre det lettere at være lærer (og dermed billigere), og det kan det måske. Men der er jo også et dannelsesspørgs......I al vores iver efter at få presset nogle flere digitale dimser ind i skolen, er vi i fare for at glemme hvad det er vi skal med disse dimser. Der er store forventninger til at de kan gøre det lettere at være lærer (og dermed billigere), og det kan det måske. Men der er jo også et...... dannelsesspørgsmål knyttet til it. Hvad er egentlig digital dannelse? Og hvad betyder det for danskfaget?...

  14. Digital produktion

    DEFF Research Database (Denmark)

    Bogen sætter fokus på digital produktion, som er en stærk læringsform, der faciliterer elevernes læreprocesser og kvalificerer elevernes faglige læringsresultater. Det sker når lærerne udarbejder didaktiske rammedesign, hvor eleverne arbejder selvstændigt inden for dette rammedesign, og hvor mål og...... procesevaluering stilladserer elevernes faglige proces. I digitale produktionsprocesser arbejder eleverne iterativt, de udvikler ejerskab til produktionen og fastholder selv deres læreprocesser. It’s multimodalitet, elevernes kollaborative tilgange, videndeling mellem eleverne og elevernes uformelle lege- og...... elevernes digitale produktion er lærernes didaktiske rammesætning og stilladserende tilgange. Her lægger lærerne op til, at eleverne som didaktiske designere i relation til rammesætningen skal organisere og planlægge deres læreprocesser, inddrages i målsætning, evaluering og valg af digitale ressourcer...

  15. Modeling and Compensation Design for a Power Hardware-in-the-Loop Simulation of an AC Distribution System: Preprint

    Energy Technology Data Exchange (ETDEWEB)

    Prabakar, Kumaraguru [National Renewable Energy Laboratory (NREL), Golden, CO (United States); Ainsworth, Nathan [National Renewable Energy Laboratory (NREL), Golden, CO (United States); Pratt, Annabelle [National Renewable Energy Laboratory (NREL), Golden, CO (United States); Baggu, Murali M [National Renewable Energy Laboratory (NREL), Golden, CO (United States); Hariri, Ali [Formerly NREL

    2017-10-06

    Power hardware-in-the-loop (PHIL) simulation, where actual hardware under text is coupled with a real-time digital model in closed loop, is a powerful tool for analyzing new methods of control for emerging distributed power systems. However, without careful design and compensation of the interface between the simulated and actual systems, PHIL simulations may exhibit instability and modeling inaccuracies. This paper addresses issues that arise in the PHIL simulation of a hardware battery inverter interfaced with a simulated distribution feeder. Both the stability and accuracy issues are modeled and characterized, and a methodology for design of PHIL interface compensation to ensure stability and accuracy is presented. The stability and accuracy of the resulting compensated PHIL simulation is then shown by experiment.

  16. Design and Implementation of Digital Chebyshev Type II Filter using XSG for Noise Reduction in ECG Signal

    OpenAIRE

    Kaustubh Gaikwad; Mahesh Chavan

    2016-01-01

    ASIC Chips and Digital Signal Processors are generally used for implementing digital filters. Now days the advanced technologies lead to use of field programmable Gate Array (FPGA) for the implementation of Digital Filters.The present paper deals with Design and Implementation of Digital IIR Chebyshev type II filter using Xilinx System Generator. The Quantization and Overflow are main crucial parameters while designing the filter on FPGA and that need to be consider for getting th...

  17. Digital Copies and Digital Museums in a Digital Cultural Policy

    Directory of Open Access Journals (Sweden)

    Ole Marius Hylland

    2017-09-01

    Full Text Available This article investigates how a digital turn and digital copies have influenced ideas, roles and authorities within a national museum sector. It asks whether digital mu-seums and their digital reproductions expand and/or challenge a traditional cul-tural policy. Two specific cases are highlighted to inform the discussion on these questions - the Norwegian digital museum platform DigitaltMuseum and Google Art Project. The article argues that there is a certain epochalism at play when the impact of a digital turn is analysed. At the same time, some clear major changes are taking place, even if their impact on cultural policies might be less than expec-ted. I propose that one of the changes is the replacing of authenticity with accessi-bility as the primary legitimating value of museum objects.

  18. Global patterns and trends in human-wildlife conflict compensation.

    Science.gov (United States)

    Ravenelle, Jeremy; Nyhus, Philip J

    2017-04-25

    Human-wildlife conflict is a major conservation challenge, and compensation for wildlife damage is a widely used economic tool to mitigate this conflict. The effectiveness of this management tool is widely debated. The relative importance of factors associated with compensation success is unclear, and little is known about global geographic or taxonomic differences in the application of compensation programs. We reviewed research on wildlife-damage compensation to determine geographic and taxonomic gaps, analyze patterns of positive and negative comments related to compensation, and assess the relative magnitude of global compensation payments. We analyzed 288 publications referencing wildlife compensation and identified 138 unique compensation programs. These publications reported US$222 million (adjusted for inflation) spent on compensation in 50 countries since 1980. Europeans published the most articles, and compensation funding was highest in Europe, where depredation by wolves and bears was the most frequently compensated damage. Authors of the publications we reviewed made twice as many negative comments as positive comments about compensation. Three-quarters of the negative comments related to program administration. Conversely, three-quarters of the positive comments related to program outcomes. The 3 most common suggestions to improve compensation programs included requiring claimants to employ damage-prevention practices, such as improving livestock husbandry or fencing of crops to receive compensation (n = 25, 15%); modifying ex post compensation schemes to some form of outcome-based performance payment (n = 21, 12%); and altering programs to make compensation payments more quickly (n = 14, 8%). We suggest that further understanding of the strengths and weaknesses of compensation as a conflict-mitigation tool will require more systematic evaluation of the factors driving these opinions and that differentiating process and outcomes and understanding

  19. Summer Research Fellowship Programme 2018

    Indian Academy of Sciences (India)

    Date of birth: 2 September 1957. Specialization: Cosmic Magnetic Fields, Structure Formation, Cosmology Address: Distinguished Professor & Dean, Visitor Academic Programmes, Inter-University Centre for Astronomy & Astrophysics, Post Bag 4, Ganeshkhind, Pune 411 007, Maharashtra Contact: Office: (020) 2560 4101

  20. Climate Ambassador Programmes in Municipalities

    DEFF Research Database (Denmark)

    Jørgensen, Michael Søgaard; Pedersen, Stine Rahbek

    2016-01-01

    in the municipalities of Furesø, Lyngby-Taarbæk, Frederiksberg and Hvidovre. Two of the ambassador programmes presented here focus primarily on climate change mitigation initiatives, and two have a broader focus on sustainable development. Important elements for the impact of these programmes are the networking among......Some Danish municipalities have developed ambassador programmes which generate environmental and climate change mitigation efforts in local public administrations and institutions. This chapter analyses the characteristics and experiences of four ambassador programmes now operating...... the local ambassadors, the central coordinator’s ability to support the local ambassador with knowledge about mapping, reduction of environmental impacts and facilitation of development of initiatives, and mechanisms for the allocation of cost savings from local resource savings....

  1. CERN openlab Summer Student Programme

    CERN Multimedia

    2012-01-01

    CERN openlab is currently taking applications for its summer student programme. The closing date for applications is 30 March 2012.   The openlab Summer Student Programme is open for applications from bachelor, master and PhD students in computer science and physics. Successful applicants will spend 8 weeks at CERN, during the period June to September 2012, to work with some of the latest hardware and software technologies. The programme is more than just a summer at CERN: it can lead to follow-on projects at the home institute and may even inspire the students to become entrepreneurs in cutting-edge computing technologies. A series of lectures will be given by experts in various domains of CERN related high-throughput computing. Study tours to external companies and universities as well as to CERN facilities are also part of the programme. Please visit www.cern.ch/openlab-students for more information.

  2. CERN openlab summer student programme

    CERN Multimedia

    2013-01-01

    CERN openlab is currently taking applications for its summer student programme. The closing date for applications is 31 March 2013.   The openlab summer student programme is open for applications from bachelor, master and PhD students in computer science and physics. Successful applicants will spend 9 weeks at CERN, during the period from June to September 2013, working with some of the latest hardware and software technologies. The programme is more than just a summer at CERN: it can lead to follow-on projects at the home institute and may even inspire students to become entrepreneurs in cutting-edge computing technologies. A series of lectures will be given by experts in various domains of CERN-related high-throughput computing. Study tours of external companies and universities as well as of CERN facilities are also part of the programme. Please visit the CERN openlab website for more information.

  3. Digital radiography can reduce scoliosis x-ray exposure

    Energy Technology Data Exchange (ETDEWEB)

    Kling, T.F. Jr.; Cohen, M.J.; Lindseth, R.E.; De Rosa, G.P. (Indiana Univ. School of Medicine, Indianapolis (USA))

    1990-09-01

    Digital radiology is a new computerized system of acquiring x-rays in a digital (electronic) format. It possesses a greatly expanded dose response curve that allows a very broad range of x-ray dose to produce a diagnostic image. Potential advantages include significantly reduced radiation exposure without loss of image quality, acquisition of images of constant density irrespective of under or over exposure, and reduced repeat rates for unsatisfactory films. The authors prospectively studied 30 adolescents with scoliosis who had both conventional (full dose) and digital (full, one-half, or one-third dose) x-rays. They found digital made AP and lateral image with all anatomic areas clearly depicted at full and one-half dose. Digital laterals were better at full dose and equal to conventional at one-half dose. Cobb angles were easily measured on all one-third dose AP and on 8 of 10 one-third dose digital laterals. Digital clearly depicted the Risser sign at one-half and one-third dose and the repeat rate was nil in this study, indicating digital compensates well for exposure errors. The study indicates that digital does allow radiation dose to be reduced by at least one-half in scoliosis patients and that it does have improved image quality with good contrast over a wide range of x-ray exposure.

  4. Deformation compensation in dynamic tomography; Compensation de deformations en tomographie dynamique

    Energy Technology Data Exchange (ETDEWEB)

    Desbat, L. [Universite Joseph Fourier, UMR CNRS 5525, 38 - Grenoble (France); Roux, S. [Universite Joseph Fourier, TIMC-IMAG, In3S, Faculte de Medecine, 38 - Grenoble (France)]|[CEA Grenoble, Lab. d' Electronique et de Technologie de l' Informatique (LETI), 38 (France); Grangeat, P. [CEA Grenoble, Lab. d' Electronique et de Technologie de l' Informatique (LETI), 38 (France)

    2005-07-01

    This work is a contribution to the compensation of motion in tomography. New classes of deformation are proposed, that compensates analytically by an algorithm of a F.B.P. type reconstruction. This work makes a generalisation of the known results for affine deformations, in parallel geometry and fan-beam, to deformation classes of infinite dimension able to include strong non linearities. (N.C.)

  5. Digital platforms as enablers for digital transformation

    DEFF Research Database (Denmark)

    Hossain, Mokter; Lassen, Astrid Heidemann

    transformation is crucial. This study aims at exploring how organizations are driven towards transformation in various ways to embrace digital platforms for ideas, technologies, and knowledge. It shows the opportunities and challenges digital platforms bring in organizations. It also highlights underlying......Digital platforms offer new ways for organizations to collaborate with the external environment for ideas, technologies, and knowledge. They provide new possibilities and competence but they also bring new challenges for organizations. Understanding the role of these platforms in digital...... mechanisms and potential outcomes of various digital platforms. The contribution of the submission is valuable for scholars to understand and further explore this area. It provides insight for practitioners to capture value through digital platforms and accelerate the pace of organizations’ digital...

  6. INCORRECT PRESERVATION OF AMPUTATED DIGITS

    Directory of Open Access Journals (Sweden)

    Uroš Ahčan

    2004-09-01

    completely amputated finger or fingers; the occurence was at its highest in 1998 (28 cases and at its lowest (23 in the years 2000 and 2002 (at an average of 24.8 annually. The number of attempted replantations has been demonstrated to be on the rise (28.8% of all severed fingers replanted in 1998; and 47.9% in 2002. The success rate throughout the 5 year period was 81%. The type of injury under investigation is most frequent in population of the age group 30 to 50.The presented cases clearly indicate that the incorrect, hypothermic treatment of the amputated extremity has a demonstrable negative effect on the result of the replantation.Conclusions. It is obvious that the knowledge on the treatment of severed digits is lacking in both lay and professional public. The most common error in the preservation of the severed digit is dangerously low temperature during transport. Optimal conditions of hypothermic preservation are, however, difficult to maintain in the field. A more engaged education would greatly improve the conditions of transport, and increase the success rate of replantations. Adequate educational programmes; instructions to both lay persons and professionals; and devising a transport bag for hypothermic preservation of severed digits are urgently called for.

  7. Field Evaluation of Programmable Thermostats

    Energy Technology Data Exchange (ETDEWEB)

    Sachs, O. [Fraunhofer Center for Sustainable Energy Systems (CSE), Cambridge, MA (United States); Tiefenbeck, V. [Fraunhofer Center for Sustainable Energy Systems (CSE), Cambridge, MA (United States); Duvier, C. [Fraunhofer Center for Sustainable Energy Systems (CSE), Cambridge, MA (United States); Qin, A. [Fraunhofer Center for Sustainable Energy Systems (CSE), Cambridge, MA (United States); Cheney, K. [Fraunhofer Center for Sustainable Energy Systems (CSE), Cambridge, MA (United States); Akers, C. [Fraunhofer Center for Sustainable Energy Systems (CSE), Cambridge, MA (United States); Roth, K. [Fraunhofer Center for Sustainable Energy Systems (CSE), Cambridge, MA (United States)

    2012-12-01

    Prior research suggests that poor programmable thermostats usability may prevent their effective use to save energy. The Fraunhofer team hypothesized that home occupants with high-usability thermostats would be more likely to use them to save energy than people with a basic thermostats. In this report, the team discusses results of a project in which the team monitored and compared programmable thermostats with basic thermostats in an affordable housing apartment complex.

  8. Scarabee programme and associated trials

    Energy Technology Data Exchange (ETDEWEB)

    Meyer-Heine, A.; Schmitt, A.P.; Aujollet, J.M.; Fortunato, M.; Chaudat, J.P. (Departement de Surete Nucleaire, CEA Fontenay-aux-Roses, 92 (France)); Penet, F. (CEA Cadarache, 13 - Saint-Paul-les-Durance (France)); Costa, J. (CEA Saclay, 91 - Gif-sur-Yvette (France)); Simeon, C. (SEPTEN-EDF, 92 - Clamart)

    This article describes the Scarabee set-up and the programme conducted in this experimental reactor, designed for the study of assembly accidents in the fast neutron field. Out-pile experiments carried out in support of the Scarabee programme are then presented. Two lines of research are distinguished: thermohydraulic (local obstructions, sodium boiling, melting of cladding) and fuel baths. Some studies more specific to molten fuels are also mentioned.

  9. Feed-forward digital phase and amplitude correction system

    Science.gov (United States)

    Yu, David U. L.; Conway, Patrick H.

    1994-01-01

    Phase and amplitude modifications in repeatable RF pulses at the output of a high power pulsed microwave amplifier are made utilizing a digital feed-forward correction system. A controlled amount of the output power is coupled to a correction system for processing of phase and amplitude information. The correction system comprises circuitry to compare the detected phase and amplitude with the desired phase and amplitude, respectively, and a digitally programmable phase shifter and attenuator and digital logic circuitry to control the phase shifter and attenuator. The Phase and amplitude of subsequent are modified by output signals from the correction system.

  10. H. Sapiens Digital: From Digital Immigrants and Digital Natives to Digital Wisdom

    Science.gov (United States)

    Prensky, Marc

    2009-01-01

    As we move further into the 21st century, the digital native/digital immigrant paradigm created by Marc Prensky in 2001 is becoming less relevant. In this article, Prensky suggests that we should focus instead on the development of what he calls "digital wisdom." Arguing that digital technology can make us not just smarter but truly wiser, Prensky…

  11. Norwegian mastitis control programme

    Directory of Open Access Journals (Sweden)

    Østerås O

    2009-04-01

    changes in attitude and breeding, eradicating bovine virus diarrhoea virus (BVDV and a better implementation of mastitis prevention programmes.

  12. Norwegian mastitis control programme

    Science.gov (United States)

    2009-01-01

    breeding, eradicating bovine virus diarrhoea virus (BVDV) and a better implementation of mastitis prevention programmes. PMID:22081877

  13. [Programmes against depression].

    Science.gov (United States)

    Taleb, M; Rouillon, F; Hegerl, U; Hamdani, N; Gorwood, Ph

    2006-01-01

    frequently criticized, as this may reduce efficacy. A multilevel approach is crucial for the success of action programmes against depression, because synergistic effects can be expected. In Germany, the "Nürnberger Bündnis gegen Depression" project was based on four levels, and effectively reduced the suicide rate. These levels of action included "cooperation with GPs", such as training sessions based on video, and presence of a phone hotline, "public relations activities", "training sessions for multipliers", such as priests, social workers and media, and "special offers for high risk groups and self-help activities". In France, such a program is clearly required.

  14. Digital television in the delivery of multimedia education content.

    CSIR Research Space (South Africa)

    Ntlatlapa, N

    2012-11-01

    Full Text Available network or cellular technology and the downlink will be through digital video broadcasting (DVB). DVB is the standard that South Africa has selected for its TV digitalisation programme. Each DVB-T2 multiplex has the capacity to deliver 31Mbps, meaning...

  15. Syrians' Acceptance of Digital Lectures: A Case Study

    Science.gov (United States)

    Ramadan, Reem

    2016-01-01

    Technology-based learning modules are mostly challenged by their acceptance. A single-case study and mixed research method are used to explore a unique situation of applying digital lectures at the postgraduate Programmes at the Faculty of Tourism at Damascus University as a solution for brain drain in the Syrian higher education system. Results…

  16. Geotagging Digital Collections: BeaverTracks Mobile Project

    Science.gov (United States)

    Griggs, Kim

    2011-01-01

    BeaverTracks Historical Locations and Walking Tour is a mobile project at Oregon State University (OSU), where the author serves as programmer/analyst. It connects the past to the present by linking historic images to current campus locations. The goal of BeaverTracks is to showcase and bring attention to OSU Libraries' digital collections as well…

  17. FPGA-Based Filterbank Implementation for Parallel Digital Signal Processing

    Science.gov (United States)

    Berner, Stephan; DeLeon, Phillip

    1999-01-01

    One approach to parallel digital signal processing decomposes a high bandwidth signal into multiple lower bandwidth (rate) signals by an analysis bank. After processing, the subband signals are recombined into a fullband output signal by a synthesis bank. This paper describes an implementation of the analysis and synthesis banks using (Field Programmable Gate Arrays) FPGAs.

  18. MTB-USDH Compensation Tracking System (MTB-CTS)

    Data.gov (United States)

    US Agency for International Development — MTB-USDH Compensation Tracking System: is the USDH Compensation Tracking System (MTB-CTS) to assist managers in monitoring their payroll costs for U.S. direct hires....

  19. NOSTRADAMUS programmable translator user's manual and programmer's manual

    Energy Technology Data Exchange (ETDEWEB)

    Harmon, J.D.

    1987-07-01

    One of the disadvantages in using supercomputers to run engineering analysis codes is that the binary files produced on the supercomputer may be incompatible with postprocessing programs running on a different machine. It is therefore necessary to translate these binary files into a form that is readable by the machines used for postprocessing. Described herein is a programmable translator that translates data produced by one of these analysis codes from the binary format of the Cray supercomputer to the functional equivalent for the Digital Equipment Corporation VAX machines. The general usage of this translator is discussed, as well as the programming language for the translator and some of the finer points of the use of this language. Several programming examples are also included.

  20. Enabling Digital Literacy

    DEFF Research Database (Denmark)

    Ryberg, Thomas; Georgsen, Marianne

    2010-01-01

    There are some tensions between high-level policy definitions of “digital literacy” and actual teaching practice. We need to find workable definitions of digital literacy; obtain a better understanding of what digital literacy might look like in practice; and identify pedagogical approaches, which...... support teachers in designing digital literacy learning. We suggest that frameworks such as Problem Based Learning (PBL) are approaches that enable digital literacy learning because they provide good settings for engaging with digital literacy. We illustrate this through analysis of a case. Furthermore......, these operate on a meso-level mediating between high-level concepts of digital literacy and classroom practice....