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Sample records for measured count-rate performance

  1. Characterization of the count rate performance of modern gamma cameras

    Science.gov (United States)

    Silosky, M.; Johnson, V.; Beasley, C.; Cheenu Kappadath, S.

    2013-01-01

    Purpose: Evaluation of count rate performance (CRP) is an integral component of gamma camera quality assurance and system deadtime (τ) may be utilized for image correction in quantitative studies. This work characterizes the CRP of three modern gamma cameras and estimates τ using two established methods (decay and dual source) under a variety of experimental conditions. Methods: For the decay method, uncollimated detectors were exposed to a Tc-99m source of relatively high activity and count rates were sampled regularly over 48 h. Input count rate at each time point was based on the lowest observed count rate data point. The input count rate was plotted against the observed count rate and fit via least-squares to the paralyzable detector model (PDM) to estimate τ (rates method). A novel expression for observed counts as a function of measurement time interval was derived, taking into account the PDM and the presence of background but making no assumption regarding input count rate. The observed counts were fit via least-squares to this novel expression to estimate τ (counts method). Correlation and Bland-Altman analyses were performed to assess agreement in estimates of τ between the rates and counts methods. The dependence of τ on energy window definition and incident energy spectrum were characterized. The dual source method was also used to estimate τ and its agreement with estimates from the decay method under identical conditions was also investigated. The dependences of τ on the total activity and the ratio of source activities were characterized. Results: The observed CRP curves for each gamma camera agreed with the PDM at low count rates but deviated substantially from it at high count rates. The estimates of τ determined from the paralyzable portion of the CPR curve using the rates method and the counts method were found to be highly correlated (r = 0.999) but with a small (∼6%) difference. No statistically significant difference was observed

  2. Measured count-rate performance of the Discovery STE PET/CT scanner in 2D, 3D and partial collimation acquisition modes.

    Science.gov (United States)

    Macdonald, L R; Schmitz, R E; Alessio, A M; Wollenweber, S D; Stearns, C W; Ganin, A; Harrison, R L; Lewellen, T K; Kinahan, P E

    2008-07-21

    We measured count rates and scatter fraction on the Discovery STE PET/CT scanner in conventional 2D and 3D acquisition modes, and in a partial collimation mode between 2D and 3D. As part of the evaluation of using partial collimation, we estimated global count rates using a scanner model that combined computer simulations with an empirical live-time function. Our measurements followed the NEMA NU2 count rate and scatter-fraction protocol to obtain true, scattered and random coincidence events, from which noise equivalent count (NEC) rates were calculated. The effect of patient size was considered by using 27 cm and 35 cm diameter phantoms, in addition to the standard 20 cm diameter cylindrical count-rate phantom. Using the scanner model, we evaluated two partial collimation cases: removing half of the septa (2.5D) and removing two-thirds of the septa (2.7D). Based on predictions of the model, a 2.7D collimator was constructed. Count rates and scatter fractions were then measured in 2D, 2.7D and 3D. The scanner model predicted relative NEC variation with activity, as confirmed by measurements. The measured 2.7D NEC was equal or greater than 3D NEC for all activity levels in the 27 cm and 35 cm phantoms. In the 20 cm phantom, 3D NEC was somewhat higher ( approximately 15%) than 2.7D NEC at 100 MBq. For all higher activity concentrations, 2.7D NEC was greater and peaked 26% above the 3D peak NEC. The peak NEC in 2.7D mode occurred at approximately 425 MBq, and was 26-50% greater than the peak 3D NEC, depending on object size. NEC in 2D was considerably lower, except at relatively high activity concentrations. Partial collimation shows promise for improved noise equivalent count rates in clinical imaging without altering other detector parameters.

  3. Count rate performance study of the Lausanne ClearPET scanner demonstrator

    Energy Technology Data Exchange (ETDEWEB)

    Rey, M. [LPHE, Ecole Polytechnique Federale de Lausanne, CH-1015 Lausanne (Switzerland)]. E-mail: martin.rey@epfl.ch; Jan, S. [Service Hospitalier Frederic Joliot, CEA, F-91401 Orsay (France); Vieira, J.-M. [LPHE, Ecole Polytechnique Federale de Lausanne, CH-1015 Lausanne (Switzerland); Mosset, J.-B. [LPHE, Ecole Polytechnique Federale de Lausanne, CH-1015 Lausanne (Switzerland); Krieguer, M. [IIHE, Vrije Universiteit Brussel, B-1050 Brussels (Belgium); Comtat, C. [Service Hospitalier Frederic Joliot, CEA, F-91401 Orsay (France); Morel, C. [CPPM, CNRS-IN2P3, Universite de la Mediterranee Aix-Marseille II, F-13288 Marseille (France)

    2007-02-01

    This paper presents the count rate measurements obtained with the Lausanne partial ring ClearPET scanner demonstrator and compares them against GATE Monte Carlo simulations. For the present detector setup, a maximum single event count rate of 1.1 Mcps is measured or a 250-750 keV energy window. This corresponds to a coincidence count rate of approximately 22 kcps. Good agreements are observed between measured and simulated data. Count rate performance, including Noise Equivalent Count (NEC) curves, are determined and extrapolated for a full ring ClearPET design using GATE Monte Carlo simulations. For a full ring design with three rings of detector modules, NEC is peaking at about 70 kcps for 20 MBq.

  4. Count rate performance of a silicon-strip detector for photon-counting spectral CT

    Science.gov (United States)

    Liu, X.; Grönberg, F.; Sjölin, M.; Karlsson, S.; Danielsson, M.

    2016-08-01

    A silicon-strip detector is developed for spectral computed tomography. The detector operates in photon-counting mode and allows pulse-height discrimination with 8 adjustable energy bins. In this work, we evaluate the count-rate performance of the detector in a clinical CT environment. The output counts of the detector are measured for x-ray tube currents up to 500 mA at 120 kV tube voltage, which produces a maximum photon flux of 485 Mphotons/s/mm2 for the unattenuated beam. The corresponding maximum count-rate loss of the detector is around 30% and there are no saturation effects. A near linear relationship between the input and output count rates can be observed up to 90 Mcps/mm2, at which point only 3% of the input counts are lost. This means that the loss in the diagnostically relevant count-rate region is negligible. A semi-nonparalyzable dead-time model is used to describe the count-rate performance of the detector, which shows a good agreement with the measured data. The nonparalyzable dead time τn for 150 evaluated detector elements is estimated to be 20.2±5.2 ns.

  5. A model of the high count rate performance of NaI(Tl)-based PET detectors

    Energy Technology Data Exchange (ETDEWEB)

    Wear, J.A.; Karp, J.S.; Freifelder, R. [Univ. of Pennsylvania, Philadelphia, PA (United States). Dept. of Radiology; Mankoff, D.A. [Univ. of Washington, Seattle, WA (United States). Dept. of Radiology; Muehllehner, G. [UGM Medical Systems, Philadelphia, PA (United States)

    1998-06-01

    A detailed model of the response of large-area NaI(Tl) detectors used in PET and their triggering and data acquisition electronics has been developed. This allows one to examine the limitations of the imaging system`s performance due to degradation in the detector performance from light pile-up and deadtime from triggering and event processing. Comparisons of simulation results to measurements from the HEAD PENN-PET scanner have been performed to validate the Monte Carlo model. The model was then used to predict improvements in the high count rate performance of the HEAD PENN-PET scanner using different signal integration times, light response functions, and detectors.

  6. Extended Measurement Capabilities of the Electron Proton Helium INstrument aboard SOHO - Understanding single detector count rates

    Science.gov (United States)

    Kühl, P.; Banjac, S.; Heber, B.; Labrenz, J.; Müller-Mellin, R.; Terasa, C.

    Forbush (1937) was the first to observe intensity decreases lasting for a few days utilizing ionization chambers. A number of studies on Forbush decreases (FDs) have been performed since then utilizing neutron monitors and space instrumentation. The amplitude of these variations can be as low as a few permil. Therefore intensity measurements need to be of high statistical accuracy. Richardson et al. (1996) suggested therefore to utilize the single counter measurements of the guard counters of the IMP 8 and Helios E6 instruments. Like the above mentioned instruments the Electron Proton Helium INstrument (EPHIN) provides single counting rates. During the extended solar minimum in 2009 its guard detector counted about 25000~counts/minute, allowing to determine intensity variations of less than 2 permil using 30 minute averages. We performed a GEANT 4 simulation of the instrument in order to determine the energy response of all single detectors. It is shown here that their energy thresholds are much lower than the ones of neutron monitors and therefore we developed a criterion that allows to investigate FDs during quiet time periods.

  7. Performance of Drift-Tube Detectors at High Counting Rates for High-Luminosity LHC Upgrades

    CERN Document Server

    Bittner, Bernhard; Kortner, Oliver; Kroha, Hubert; Manfredini, Alessandro; Nowak, Sebastian; Ott, Sebastian; Richter, Robert; Schwegler, Philipp; Zanzi, Daniele; Biebel, Otmar; Hertenberger, Ralf; Ruschke, Alexander; Zibell, Andre

    2016-01-01

    The performance of pressurized drift-tube detectors at very high background rates has been studied at the Gamma Irradiation Facility (GIF) at CERN and in an intense 20 MeV proton beam at the Munich Van-der-Graaf tandem accelerator for applications in large-area precision muon tracking at high-luminosity upgrades of the Large Hadron Collider (LHC). The ATLAS muon drifttube (MDT) chambers with 30 mm tube diameter have been designed to cope with and neutron background hit rates of up to 500 Hz/square cm. Background rates of up to 14 kHz/square cm are expected at LHC upgrades. The test results with standard MDT readout electronics show that the reduction of the drift-tube diameter to 15 mm, while leaving the operating parameters unchanged, vastly increases the rate capability well beyond the requirements. The development of new small-diameter muon drift-tube (sMDT) chambers for LHC upgrades is completed. Further improvements of tracking e?ciency and spatial resolution at high counting rates will be achieved with ...

  8. Counting rate measurements for lifetime experiments using the RDDS method with the new generation γ-ray array AGATA

    Energy Technology Data Exchange (ETDEWEB)

    Goasduff, A., E-mail: Alain.Goasduff@csnsm.in2p3.fr [Université de Strasbourg, IPHC, 23 rue du Loess, F-67037 Strasbourg (France); CNRS, UMR 7178, F-67037 Strasbourg (France); CSNSM, UMR 8609, IN2P3-CNRS, Université Paris-Sud 11, F-91405 Orsay Cedex (France); Valiente-Dobón, J.J. [Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro (Italy); Lunardi, S. [Dipartimento di Fisica e Astronomia, Università di Padova and INFN, Sezione di Padova, I-35131 Padova (Italy); Haas, F. [Université de Strasbourg, IPHC, 23 rue du Loess, F-67037 Strasbourg (France); CNRS, UMR 7178, F-67037 Strasbourg (France); Gadea, A. [Instituto de Física Corpuscular, CSIC-Universitat de València, E-46980 Valencia (Spain); Angelis, G. de [Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro (Italy); Bazzacco, D. [Dipartimento di Fisica e Astronomia, Università di Padova and INFN, Sezione di Padova, I-35131 Padova (Italy); Courtin, S. [Université de Strasbourg, IPHC, 23 rue du Loess, F-67037 Strasbourg (France); CNRS, UMR 7178, F-67037 Strasbourg (France); Farnea, E. [Dipartimento di Fisica e Astronomia, Università di Padova and INFN, Sezione di Padova, I-35131 Padova (Italy); Gottardo, A. [Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro (Italy); Michelagnoli, C. [Dipartimento di Fisica e Astronomia, Università di Padova and INFN, Sezione di Padova, I-35131 Padova (Italy); and others

    2014-09-11

    The differential Recoil Distance Doppler Shift (RDDS) method after multinucleon transfer (MNT) reactions to measure lifetimes of excited states in neutron-rich nuclei requires the use of a thick energy degrader for the recoiling ejectiles that are then detected in a spectrometer. This type of measurements greatly benefits from the use of the new generation segmented γ-ray detectors, such as the AGATA demonstrator which offers unprecedented energy and angular resolutions. In order to make an optimized choice of the material and the thickness of the degrader for lifetime measurements using the RDDS method after MNT, an experiment has been performed with the AGATA demonstrator. Counting rate measurements for different degraders are presented.

  9. [Usefulness of Determining Acquisition Time by True Count Rate Measurement Method for Delivery 18F-FDG PET/CT].

    Science.gov (United States)

    Miura, Shota; Odashima, Satoshi

    2016-03-01

    A stable quality of delivery 18F-fluoro-2-deoxy-D-glucose (18F-FDG) positron emission tomography/computed tomography (PET/CT) requires suitable acquisition time, which can be obtained from an accurate true count of 18F-FDG. However, the true count is influenced by body mass index (BMI) and attenuation of 18F-FDG. In order to remove these influences, we have developed a new method (actual measurement method) to measure the actual true count rate based on sub-pubic thigh, which allows us to calculate a suitable acquisition time. In this study, we aimed to verify the acquisition count through our new method in terms of two categories: (1) the accuracy of acquisition count and (2) evaluation of clinical images using physical index. Our actual measurement method was designed to obtain suitable acquisition time through the following procedure. A true count rate of sub-pubic thigh was measured through detector of PET, and used as a standard true count rate. Finally, the obtained standard count rate was processed to acquisition time. This method was retrospectively applied to 150 patients, receiving 18F-FDG administration from 109.7 to 336.8 MBq, and whose body weight ranged from 37 to 95.4 kg. The accuracy of true count was evaluated by comparing relationships of true count, relative to BMI or to administered dose of 18F-FDG. The PET/CT images obtained by our actual measurement method were assessed using physical index. Our new method resulted in accurate true count, which was not influenced by either BMI or administered dose of 18F-FDG, as well as satisfied PET/CT images with recommended criteria of physical index in all patients.

  10. Compositional variability across Mercury's surface revealed by MESSENGER measurements of variations in thermal neutron count rates

    Science.gov (United States)

    Peplowski, P. N.; Lawrence, D. J.; Goldsten, J. O.; Nittler, L. R.; Solomon, S. C.

    2013-12-01

    Measurements by MESSENGER's Gamma-Ray and Neutron Spectrometer (GRNS) have revealed variations in the flux of thermal neutrons across Mercury's northern hemisphere. These variations are interpreted to originate from spatial variations in surface elemental composition. In particular, the measurements are sensitive to the near-surface abundances of elements that absorb thermal neutrons, including major rock-forming elements such as Fe and Ti, minor elements such as Mn and Cl, and rare-earth elements such as Gd and Sm. We have constructed a map of thermal neutron variability across the surface and compared it with known variations in elemental composition and with the distribution of geologic units. Development of the map included the derivation of the macroscopic thermal neutron absorption cross section across the surface, a quantity whose value and variability provides useful constraints on the formation and geochemical evolution of Mercury's crust. Finally, by combining the thermal neutron measurements with previously reported elemental measurements from the GRNS and MESSENGER's X-Ray Spectrometer, we have derived constraints on the abundances of neutron-absorbing elements, including previously unreported limits for some minor and rare-earth elements.

  11. Gamma spectrum, count rate, and dose rate measurements of the Columbia riverbank from Vernita to Sacajawea

    Energy Technology Data Exchange (ETDEWEB)

    Grande, L.A.

    1966-01-31

    The purpose of this study was to evaluate radiological conditions that exist on the riverbank of the Columbia River. Included was a comparative study of the suitability of three instruments to measure the dose rates. These instruments were a NaI (T1) scintillation counter normally used for aerial monitoring, a bioplastic scintillation counter normally used as a road monitor, and a portable 40 liter ionization chamber normally used to measure very low gamma dose rates. The selection of representative sites for the comparative study was based on an initial GM survey of the general areas in question. Seven sites were studied--from Vernita Ferry Landing above the Hanford project to Sacajawea Park below Pasco.

  12. Gamma-gamma coincidence performance of LaBr3:Ce scintillation detectors vs HPGe detectors in high count-rate scenarios.

    Science.gov (United States)

    Drescher, A; Yoho, M; Landsberger, S; Durbin, M; Biegalski, S; Meier, D; Schwantes, J

    2017-04-01

    A radiation detection system consisting of two cerium doped lanthanum bromide (LaBr3:Ce) scintillation detectors in a gamma-gamma coincidence configuration has been used to demonstrate the advantages that coincident detection provides relative to a single detector, and the advantages that LaBr3:Ce detectors provide relative to high purity germanium (HPGe) detectors. Signal to noise ratios of select photopeak pairs for these detectors have been compared to high-purity germanium (HPGe) detectors in both single and coincident detector configurations in order to quantify the performance of each detector configuration. The efficiency and energy resolution of LaBr3:Ce detectors have been determined and compared to HPGe detectors. Coincident gamma-ray pairs from the radionuclides (152)Eu and (133)Ba have been identified in a sample that is dominated by (137)Cs. Gamma-gamma coincidence successfully reduced the Compton continuum from the large (137)Cs peak, revealed several coincident gamma energies characteristic of these nuclides, and improved the signal-to-noise ratio relative to single detector measurements. LaBr3:Ce detectors performed at count rates multiple times higher than can be achieved with HPGe detectors. The standard background spectrum consisting of peaks associated with transitions within the LaBr3:Ce crystal has also been significantly reduced. It is shown that LaBr3:Ce detectors have the unique capability to perform gamma-gamma coincidence measurements in very high count rate scenarios, which can potentially benefit nuclear safeguards in situ measurements of spent nuclear fuel. Copyright © 2017 Elsevier Ltd. All rights reserved.

  13. Determination of Pu content in a Spent Fuel Assembly by Measuring Passive Total Neutron count rate and Multiplication with the Differential Die-Away Instrument

    Energy Technology Data Exchange (ETDEWEB)

    Henzl, Vladimir [Los Alamos National Laboratory; Croft, Stephen [Los Alamos National Laboratory; Swinhoe, Martyn T. [Los Alamos National Laboratory; Tobin, Stephen J. [Los Alamos National Laboratory

    2012-07-13

    Inspired by approach of Bignan and Martin-Didier (ESARDA 1991) we introduce novel (instrument independent) approach based on multiplication and passive neutron. Based on simulations of SFL-1 the accuracy of determination of {sup tot}Pu content with new approach is {approx}1.3-1.5%. Method applicable for DDA instrument, since it can measure both multiplication and passive neutron count rate. Comparison of pro's & con's of measuring/determining of {sup 239}Pu{sub eff} and {sup tot}Pu suggests a potential for enhanced diversion detection sensitivity.

  14. Determination of total Pu content in a Spent Fuel Assembly by Measuring Passive Neutron Count rate and Multiplication with the Differential Die-Away Instrument

    Energy Technology Data Exchange (ETDEWEB)

    Henzl, Vladimir [Los Alamos National Laboratory; Croft, Stephen [Los Alamos National Laboratory; Swinhoe, Martyn T. [Los Alamos National Laboratory; Tobin, Stephen J. [Los Alamos National Laboratory

    2012-07-18

    A key objective of the Next Generation Safeguards Initiative (NGSI) is to evaluate and develop non-destructive assay (NDA) techniques to determine the elemental plutonium content in a commercial-grade nuclear spent fuel assembly (SFA) [1]. Within this framework, we investigate by simulation a novel analytical approach based on combined information from passive measurement of the total neutron count rate of a SFA and its multiplication determined by the active interrogation using an instrument based on a Differential Die-Away technique (DDA). We use detailed MCNPX simulations across an extensive set of SFA characteristics to establish the approach and demonstrate its robustness. It is predicted that Pu content can be determined by the proposed method to a few %.

  15. Evaluation of two-stage system for neutron measurement aiming at increase in count rate at Japan Atomic Energy Agency-Fusion Neutronics Source

    Energy Technology Data Exchange (ETDEWEB)

    Shinohara, K., E-mail: shinohara.koji@jaea.go.jp; Ochiai, K.; Sukegawa, A. [Japan Atomic Energy Agency, Naka, Ibaraki 311-0193 (Japan); Ishii, K.; Kitajima, S. [Department of Quantum Science and Energy Engineering, Tohoku University, Sendai, Miyagi 980-8579 (Japan); Baba, M. [Cyclotron and Radioisotope Center, Tohoku University, Sendai, Miyagi 980-8578 (Japan); Sasao, M. [Organization for Research Initiatives and Development, Doshisha University, Kyoto 602-8580 (Japan)

    2014-11-15

    In order to increase the count rate capability of a neutron detection system as a whole, we propose a multi-stage neutron detection system. Experiments to test the effectiveness of this concept were carried out on Fusion Neutronics Source. Comparing four configurations of alignment, it was found that the influence of an anterior stage on a posterior stage was negligible for the pulse height distribution. The two-stage system using 25 mm thickness scintillator was about 1.65 times the count rate capability of a single detector system for d-D neutrons and was about 1.8 times the count rate capability for d-T neutrons. The results suggested that the concept of a multi-stage detection system will work in practice.

  16. High Count Rate Electron Probe Microanalysis

    Science.gov (United States)

    Geller, Joseph D.; Herrington, Charles

    2002-01-01

    Reducing the measurement uncertainty of quantitative analyses made using electron probe microanalyzers (EPMA) requires a careful study of the individual uncertainties from each definable step of the measurement. Those steps include measuring the incident electron beam current and voltage, knowing the angle between the electron beam and the sample (takeoff angle), collecting the emitted x rays from the sample, comparing the emitted x-ray flux to known standards (to determine the k-ratio) and transformation of the k-ratio to concentration using algorithms which includes, as a minimum, the atomic number, absorption, and fluorescence corrections. This paper discusses the collection and counting of the emitted x rays, which are diffracted into the gas flow or sealed proportional x-ray detectors. The representation of the uncertainty in the number of collected x rays collected reduces as the number of counts increase. The uncertainty of the collected signal is fully described by Poisson statistics. Increasing the number of x rays collected involves either counting longer or at a higher counting rate. Counting longer means the analysis time increases and may become excessive to get to the desired uncertainty. Instrument drift also becomes an issue. Counting at higher rates has its limitations, which are a function of the detector physics and the detecting electronics. Since the beginning of EPMA analysis, analog electronics have been used to amplify and discriminate the x-ray induced ionizations within the proportional counter. This paper will discuss the use of digital electronics for this purpose. These electronics are similar to that used for energy dispersive analysis of x rays with either Si(Li) or Ge(Li) detectors except that the shaping time constants are much smaller. PMID:27446749

  17. Count rate balance method of measuring sediment transport of sand beds by radioactive tracers; Methode du bilan des taux de comptage d'indicateurs radioactifs pour la determination du debit de charriage des lits sableux

    Energy Technology Data Exchange (ETDEWEB)

    Sauzay, G. [Commissariat a l' Energie Atomique, 91 - Saclay (France). Centre d' Etudes Nucleaires

    1967-11-01

    Radioactive tracers are applied to the direct measurement of the sediment transport rate of sand beds. The theoretical measurement formula is derived: the variation of the count rate balance is inverse of that of the transport thickness. Simultaneously the representativeness of the tracer is critically studied. The minimum quantity of tracer which has to be injected in order to obtain a correct statistical definition of count rate given by a low number of grains 'seen' by the detector is then studied. A field experiment was made and has let to study the technological conditions for applying this method: only the treatment of results is new, the experiment itself is carried out with conventional techniques applied with great care. (author) [French] Les indicateurs radioactifs sont appliques a la mesure directe du debit de charriage des lits sableux. On etablit la formule theorique de mesure: le bilan des taux de comptage varie en sens inverse de l'epaisseur de charriage. Parallelement on fait une etude critique de la representativite de l'indicateur, puis on determine la quantite minimale de traceur qu'il faut immerger pour que les taux de comptage fournis pour un faible nombre de grains 'vus' par le detecteur aient une definition statistique correcte. Une experience de terrain a permis d'etudier les conditions technologiques de cette methode: seul le depouillement des resultats est nouveau. L'experimentation in-situ se fait suivant les procedes classiques avec un tres grand soin. (auteur)

  18. Counting losses due to saturation effects of scintillation counters at high count rates

    CERN Document Server

    Hashimoto, K

    1999-01-01

    The counting statistics of a scintillation counter, with a preamplifier saturated by an overloading input, are investigated. First, the formulae for the variance and the mean number of counts, accumulated within a given gating time, are derived by considering counting-loss effects originating from the saturation and a finite resolving time of the electronic circuit. Numerical examples based on the formulae indicate that the saturation makes a positive contribution to the variance-to-mean ratio and that the contribution increases with count rate. Next the ratios are measured under high count rates when the preamplifier saturation can be observed. By fitting the present formula to the measured data, the counting-loss parameters can be evaluated. Corrections based on the parameters are made for various count rates measured in a nuclear reactor. As a result of the corrections, the linearity between count rate and reactor power can be restored.

  19. Note: A high count rate real-time digital processing method for PGNAA data acquisition system

    Science.gov (United States)

    Liu, Yuzhe; Chen, Lian; Li, Feng; Liang, Futian; Jin, Ge

    2017-07-01

    The prompt gamma neutron activation analysis (PGNAA) technique is a real-time online method to analyze the composition of industrial materials. This paper presents a data acquisition system with a high count rate and real-time digital processing method for PGNAA. Limited by the decay time of the detector, the ORTEC multi-channel analyzer (MCA) can normally achieve an average count rate of 100 kcps. However, this system uses an electrical technique to increase the average count rate and reduce dead time, and guarantees good accuracy. Since the measuring time is usually limited to about 120 s, in order to accelerate the accumulation rate of spectrum and reduce the statistical error, the average count rate is expected to reach more than 500 kcps.

  20. Preset time count rate meter using adaptive digital signal processing

    Directory of Open Access Journals (Sweden)

    Žigić Aleksandar D.

    2005-01-01

    Full Text Available Two presented methods were developed to improve classical preset time count rate meters by using adapt able signal processing tools. An optimized detection algorithm that senses the change of mean count rate was implemented in both methods. Three low-pass filters of various structures with adaptable parameters to implement the control of the mean count rate error by suppressing the fluctuations in a controllable way, were considered and one of them implemented in both methods. An adaptation algorithm for preset time interval calculation executed after the low-pass filter was devised and implemented in the first method. This adaptation algorithm makes it possible to obtain shorter preset time intervals for higher stationary mean count rate. The adaptation algorithm for preset time interval calculation executed before the low-pass filter was devised and implemented in the second method. That adaptation algorithm enables sensing of a rapid change of the mean count rate before fluctuations suppression is carried out. Some parameters were fixed to their optimum values after appropriate optimization procedure. Low-pass filters have variable number of stationary coefficients depending on the specified error and the mean count rate. They implement control of the mean count rate error by suppressing fluctuations in a controllable way. The simulated and realized methods, using the developed algorithms, guarantee that the response time shall not exceed 2 s for the mean count rate higher than 2 s-1 and that controllable mean count rate error shall be within the range of ±4% to ±10%.

  1. High counting rate resistive-plate chamber

    Science.gov (United States)

    Peskov, V.; Anderson, D. F.; Kwan, S.

    1993-05-01

    Parallel-plate avalanche chambers (PPAC) are widely used in physics experiments because they are fast (less than 1 ns) and have very simple construction: just two parallel metallic plates or mesh electrodes. Depending on the applied voltage they may work either in spark mode or avalanche mode. The advantage of the spark mode of operation is a large signal amplitude from the chamber, the disadvantage is that there is a large dead time (msec) for the entire chamber after an event. The main advantage of the avalanche mode is high rate capability 10(exp 5) counts/mm(sup 2). A resistive-plate chamber (RPC) is similar to the PPAC in construction except that one or both of the electrodes are made from high resistivity (greater than 10(exp 10) Omega(cm) materials. In practice RPC's are usually used in the spark mode. Resistive electrodes are charged by sparks, locally reducing the actual electric field in the gap. The size of the charged surface is about 10 mm(sup 2), leaving the rest of the detector unaffected. Therefore, the rate capability of such detectors in the spark mode is considerably higher than conventional spark counters. Among the different glasses tested the best results were obtained with electron type conductive glasses, which obey Ohm's law. Most of the work with such glasses was done with high pressure parallel-plate chambers (10 atm) for time-of-flight measurements. Resistive glasses have been expensive and produced only in small quantities. Now resistive glasses are commercially available, although they are still expensive in small scale production. From the positive experience of different groups working with the resistive glasses, it was decided to review the old idea to use this glass for the RPC. This work has investigated the possibility of using the RPC at 1 atm and in the avalanche mode. This has several advantages: simplicity of construction, high rate capability, low voltage operation, and the ability to work with non-flammable gases.

  2. High energy resolution and high count rate gamma spectrometry measurement of primary coolant of generation 4 sodium-cooled fast reactor; Spectrometrie gamma haute resolution et hauts taux de comptage sur primaire de reacteur de type generation 4 au sodium liquide

    Energy Technology Data Exchange (ETDEWEB)

    Coulon, R.

    2010-11-10

    Sodium-cooled Fast Reactors are under development for the fourth generation of nuclear reactor. Breeders reactors could gives solutions for the need of energy and the preservation of uranium resources. An other purpose is the radioactive wastes production reduction by transmutation and the control of non-proliferation using a closed-cycle. These thesis shows safety and profit advantages that could be obtained by a new generation of gamma spectrometry system for SFR. Now, the high count rate abilities, allow us to study new methods of accurate power measurement and fast clad failure detection. Simulations have been done and an experimental test has been performed at the French Phenix SFR of the CEA Marcoule showing promising results for these new measurements. (author) [French] Les reacteurs a neutrons rapides refroidis au sodium sont en developpement en vue d'assurer une quatrieme generation de reacteurs repondant a la demande energetique, tout en assurant la preservation des ressources d'uranium par un fonctionnement en surgenerateur. L'objectif de la filiere est egalement d'ameliorer la gestion de la radiotoxicite des dechets produits par transmutation des actinides mineurs et de controler la non-proliferation par un fonctionnement en cycle ferme. Une instrumentation de surveillance et de controle de ce type de reacteur a ete etudiee dans cette these. La spectrometrie gamma de nouvelle generation permet, par les hauts taux de traitement aujourd'hui accessibles, d'envisager de nouvelles approches pour suivre avec une precision accrue la puissance neutronique et de detecter plus precocement des ruptures de gaine combustible. Des simulations numeriques ont ete realisees et une campagne d'essai a ete menee a bien sur le reacteur Phenix de Marcoule. Des perspectives prometteuses ont ete mises en exergue pour ces deux problematiques

  3. Nuclear photonics at ultra-high counting rates and higher multipole excitations

    Energy Technology Data Exchange (ETDEWEB)

    Thirolf, P. G.; Habs, D.; Filipescu, D.; Gernhaeuser, R.; Guenther, M. M.; Jentschel, M.; Marginean, N.; Pietralla, N. [Fakultaet f. Physik, Ludwig-Maximilians-Universitaet Muenchen, Garching (Germany); Fakultaet f. Physik, Ludwig-Maximilians-Universitaet Muenchen, Garching, Germany and Max-Planck-Institute f. Quantum Optics, Garching (Germany); IFIN-HH, Bucharest-Magurele (Romania); Physik Department E12,Technische Universitaet Muenchen, Garching (Germany); Max-Planck-Institute f. Quantum Optics, Garching (Germany); Institut Laue-Langevin, Grenoble (France); Physik Department E12,Technische Universitaet Muenchen, Garching (Germany); Institut f. Kernphysik, Technische Universitaet Darmstadt (Germany)

    2012-07-09

    Next-generation {gamma} beams from laser Compton-backscattering facilities like ELI-NP (Bucharest)] or MEGa-Ray (Livermore) will drastically exceed the photon flux presently available at existing facilities, reaching or even exceeding 10{sup 13}{gamma}/sec. The beam structure as presently foreseen for MEGa-Ray and ELI-NP builds upon a structure of macro-pulses ({approx}120 Hz) for the electron beam, accelerated with X-band technology at 11.5 GHz, resulting in a micro structure of 87 ps distance between the electron pulses acting as mirrors for a counterpropagating intense laser. In total each 8.3 ms a {gamma} pulse series with a duration of about 100 ns will impinge on the target, resulting in an instantaneous photon flux of about 10{sup 18}{gamma}/s, thus introducing major challenges in view of pile-up. Novel {gamma} optics will be applied to monochromatize the {gamma} beam to ultimately {Delta}E/E{approx}10{sup -6}. Thus level-selective spectroscopy of higher multipole excitations will become accessible with good contrast for the first time. Fast responding {gamma} detectors, e.g. based on advanced scintillator technology (e.g. LaBr{sub 3}(Ce)) allow for measurements with count rates as high as 10{sup 6}-10{sup 7}{gamma}/s without significant drop of performance. Data handling adapted to the beam conditions could be performed by fast digitizing electronics, able to sample data traces during the micro-pulse duration, while the subsequent macro-pulse gap of ca. 8 ms leaves ample time for data readout. A ball of LaBr{sub 3} detectors with digital readout appears to best suited for this novel type of nuclear photonics at ultra-high counting rates.

  4. A prototype High Purity Germanium detector for high resolution gamma-ray spectroscopy at high count rates

    Energy Technology Data Exchange (ETDEWEB)

    Cooper, R.J., E-mail: rjcooper@lbl.gov [Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 (United States); Amman, M.; Luke, P.N. [Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 (United States); Vetter, K. [Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 (United States); Department of Nuclear Engineering, University of California, Berkeley, CA 94720 (United States)

    2015-09-21

    Where energy resolution is paramount, High Purity Germanium (HPGe) detectors continue to provide the optimum solution for gamma-ray detection and spectroscopy. Conventional large-volume HPGe detectors are typically limited to count rates on the order of ten thousand counts per second, however, limiting their effectiveness for high count rate applications. To address this limitation, we have developed a novel prototype HPGe detector designed to be capable of achieving fine energy resolution and high event throughput at count rates in excess of one million counts per second. We report here on the concept, design, and initial performance of the first prototype device.

  5. Characteristic Count Rate Profiles for a Rotating Modulator Gamma-Ray Imager

    CERN Document Server

    Budden, Brent S; Case, Gary L; Cherry, Michael L

    2011-01-01

    Rotating modulation is a technique for indirect imaging in the hard x-ray and soft gamma-ray energy bands, which may offer an advantage over coded aperture imaging at high energies. A rotating modulator (RM) consists of a single mask of co-planar parallel slats typically spaced equidistance apart, suspended above an array of circular non-imaging detectors. The mask rotates, temporally modulating the transmitted image of the object scene. The measured count rate profiles of each detector are folded modulo the mask rotational period, and the object scene is reconstructed using pre-determined characteristic modulation profiles. The use of Monte Carlo simulation to derive the characteristic count rate profiles is accurate but computationally expensive; an analytic approach is preferred for its speed of computation. We present both the standard and a new advanced characteristic formula describing the modulation pattern of the RM; the latter is a more robust description of the instrument response developed as part ...

  6. Solar models of low neutrino-counting rate - The depleted Maxwellian tail

    Science.gov (United States)

    Clayton, D. D.; Dwek, E.; Newman, M. J.; Talbot, R. J., Jr.

    1975-01-01

    Evolutionary sequences for the sun are presented which confirm that the Cl-37 neutrino counting rate will be greatly reduced if the high-energy tail of the Maxwellian distribution of relative energies is progressively depleted. Thermonuclear reaction rates and pressure are reevaluated for a distribution function modified by the correction factor suggested by Clayton (1974), and the effect of the results on solar models calculated with a simple Henyey code is discussed. It is shown that if the depletion is characterized by a certain exponential dependence on the distribution function, the counting rate will fall below 1 SNU for a distribution function of not less than 0.01. Suggestions are made for measuring the distribution function in the sun by means of neutrino spectroscopy and photography.

  7. An automatic attenuator device for x-ray detectors at high counting rate

    Science.gov (United States)

    Alvarez, J.; Paiser, E.; Capitan, M. J.

    2002-07-01

    In this article we describe an attenuator device for reducing/controlling the pulse detector counting losses at a high counting rate. The electronics are based on a direct measure of the detector dead time from the analog output signal at the end of the detection chain. Taking into account this parameter the attenuator device decides to reduce/enhance the number of photons that arrive at the detector by inserting/extracting the necessary number of attenuation foils in the x-ray beam path. In that way the number of events in the incoming signal are reduced and the "apparent dynamic range" of the detector is increased.

  8. Low-noise multichannel ASIC for high count rate X-ray diffractometry applications

    Energy Technology Data Exchange (ETDEWEB)

    Szczygiel, R. [AGH University of Science and Technology, Department of Measurement and Instrumentation, al. Mickiewicza 30, Krakow (Poland)], E-mail: robert.szczygiel@agh.edu.pl; Grybos, P.; Maj, P. [AGH University of Science and Technology, Department of Measurement and Instrumentation, al. Mickiewicza 30, Krakow (Poland); Tsukiyama, A.; Matsushita, K.; Taguchi, T. [Rigaku Corporation, 3-9-12 Matsubara-cho, Akishima-shi, Tokyo (Japan)

    2009-08-01

    RG64 is a 64-channel ASIC designed for the silicon strip detector readout and optimized for high count rate X-ray imaging applications. In this paper we report on the test results referring to the RG64 noise level, channel uniformity and the operation with a high rate of input signals. The parameters of the RG64-based diffractometry system are compared with the ones based on the scintillation counter. Diffractometry measurement results with silicon strip detectors of different strip lengths and strip pitch are also presented.

  9. Analysis of geomagnetic storm variations and count-rate of cosmic ray muons recorded at the Brazilian southern space observatory

    Energy Technology Data Exchange (ETDEWEB)

    Frigo, Everton [University of Sao Paulo, USP, Institute of Astronomy, Geophysics and Atmospheric Sciences, IAG/USP, Department of Geophysics, Sao Paulo, SP (Brazil); Savian, Jairo Francisco [Space Science Laboratory of Santa Maria, LACESM/CT, Southern Regional Space Research Center, CRS/INPE, MCT, Santa Maria, RS (Brazil); Silva, Marlos Rockenbach da; Lago, Alisson dal; Trivedi, Nalin Babulal [National Institute for Space Research, INPE/MCT, Division of Space Geophysics, DGE, Sao Jose dos Campos, SP (Brazil); Schuch, Nelson Jorge, E-mail: efrigo@iag.usp.br, E-mail: savian@lacesm.ufsm.br, E-mail: njschuch@lacesm.ufsm.br, E-mail: marlos@dge.inpe.br, E-mail: dallago@dge.inpe.br, E-mail: trivedi@dge.inpe.br [Southern Regional Space Research Center, CRS/INPE, MCT, Santa Maria, RS (Brazil)

    2007-07-01

    An analysis of geomagnetic storm variations and the count rate of cosmic ray muons recorded at the Brazilian Southern Space Observatory -OES/CRS/INPE-MCT, in Sao Martinho da Serra, RS during the month of November 2004, is presented in this paper. The geomagnetic measurements are done by a three component low noise fluxgate magnetometer and the count rates of cosmic ray muons are recorded by a muon scintillator telescope - MST, both instruments installed at the Observatory. The fluxgate magnetometer measures variations in the three orthogonal components of Earth magnetic field, H (North-South), D (East-West) and Z (Vertical), with data sampling rate of 0.5 Hz. The muon scintillator telescope records hourly count rates. The arrival of a solar disturbance can be identified by observing the decrease in the muon count rate. The goal of this work is to describe the physical morphology and phenomenology observed during the geomagnetic storm of November 2004, using the H component of the geomagnetic field and vertical channel V of the multi-directional muon detector in South of Brazil. (author)

  10. Multipixel silicon avalanche photodiode with ultralow dark count rate at liquid nitrogen temperature.

    Science.gov (United States)

    Akiba, M; Tsujino, K; Sato, K; Sasaki, M

    2009-09-14

    Multipixel silicon avalanche photodiodes (Si APDs) are novel photodetectors used as silicon photomultipliers (SiPMs), or multipixel photon counter (MPPC), because they have fast response, photon-number resolution, and a high count rate; one drawback, however, is the high dark count rate. We developed a system for cooling an MPPC to liquid nitrogen temperature and thus reduce the dark count rate. Our system achieved dark count rates of <0.2 cps. Here we present the afterpulse probability, counting capability, timing jitter, and photon-number resolution of our system at 78.5 K and 295 K.

  11. Optimization of statistical methods for HpGe gamma-ray spectrometer used in wide count rate ranges

    Science.gov (United States)

    Gervino, G.; Mana, G.; Palmisano, C.

    2016-07-01

    The need to perform γ-ray measurements with HpGe detectors is a common technique in many fields such as nuclear physics, radiochemistry, nuclear medicine and neutron activation analysis. The use of HpGe detectors is chosen in situations where isotope identification is needed because of their excellent resolution. Our challenge is to obtain the "best" spectroscopy data possible in every measurement situation. "Best" is a combination of statistical (number of counts) and spectral quality (peak, width and position) over a wide range of counting rates. In this framework, we applied Bayesian methods and the Ellipsoidal Nested Sampling (a multidimensional integration technique) to study the most likely distribution for the shape of HpGe spectra. In treating these experiments, the prior information suggests to model the likelihood function with a product of Poisson distributions. We present the efforts that have been done in order to optimize the statistical methods to HpGe detector outputs with the aim to evaluate to a better order of precision the detector efficiency, the absolute measured activity and the spectra background. Reaching a more precise knowledge of statistical and systematic uncertainties for the measured physical observables is the final goal of this research project.

  12. Two dimensional localization of electrons and positrons under high counting rate

    Energy Technology Data Exchange (ETDEWEB)

    Barbosa, A.F.; Anjos, J.C.; Sanchez-Hernandez, A. [Centro Brasileiro de Pesquisas Fisicas (CBPF), Rio de Janeiro, RJ (Brazil); Pepe, I.M.; Barros, N. [Bahia Univ., Salvador, BA (Brazil). Inst. de Fisica

    1997-12-01

    The construction of two wire chambers for the experiment E831 at Fermilab is reported. Each chamber includes three wire planes - one anode and two orthogonal cathodes - in which the wires operate as independent proportional counters. One of the chambers is rotated with respect to the other, so that four position coordinates may be encoded for a charged particle crossing both chambers. Spatial resolution is determined by the wire pitch: 1 mm for cathodes, 2 mm for anodes. 320 electronic channels are involved in the detection system readout. Global counting rates in excess to 10{sup 7} events per second have been measured, while the average electron-positron beam intensity may be as high as 3 x 10{sup 7} events per second. (author) 5 refs., 9 figs.

  13. Detection of Anomalous Reactor Activity Using Antineutrino Count Rate Evolution Over the Course of a Reactor Cycle

    CERN Document Server

    Bulaevskaya, Vera

    2010-01-01

    This paper analyzes the sensitivity of antineutrino count rate measurements to changes in the fissile content of civil power reactors. Such measurements may be useful in IAEA reactor safeguards applications. We introduce a hypothesis testing procedure to identify statistically significant differences between the antineutrino count rate evolution of a standard 'baseline' fuel cycle and that of an anomalous cycle, in which plutonium is removed and replaced with an equivalent fissile worth of uranium. The test would allow an inspector to detect anomalous reactor activity, or to positively confirm that the reactor is operating in a manner consistent with its declared fuel inventory and power level. We show that with a reasonable choice of detector parameters, the test can detect replacement of 73 kg of plutonium in 90 days with 95% probability, while controlling the false positive rate at 5%. We show that some improvement on this level of sensitivity may be expected by various means, including use of the method i...

  14. Developing Effective Performance Measures

    Science.gov (United States)

    2014-10-14

    University When Performance Measurement Goes Bad Laziness Vanity Narcissism Too Many Pettiness Inanity 52 Developing Effective...Kasunic, October 14, 2014 © 2014 Carnegie Mellon University Narcissism Measuring performance from the organization’s point of view, rather than from

  15. Note: Fully integrated active quenching circuit achieving 100 MHz count rate with custom technology single photon avalanche diodes

    Science.gov (United States)

    Acconcia, G.; Labanca, I.; Rech, I.; Gulinatti, A.; Ghioni, M.

    2017-02-01

    The minimization of Single Photon Avalanche Diodes (SPADs) dead time is a key factor to speed up photon counting and timing measurements. We present a fully integrated Active Quenching Circuit (AQC) able to provide a count rate as high as 100 MHz with custom technology SPAD detectors. The AQC can also operate the new red enhanced SPAD and provide the timing information with a timing jitter Full Width at Half Maximum (FWHM) as low as 160 ps.

  16. General Theory of Decoy-State Quantum Cryptography with Dark Count Rate Fluctuation

    Institute of Scientific and Technical Information of China (English)

    GAO Xiang; SUN Shi-Hai; LIANG Lin-Mei

    2009-01-01

    The existing theory of decoy-state quantum cryptography assumes that the dark count rate is a constant, but in practice there exists fluctuation. We develop a new scheme of the decoy state, achieve a more practical key generation rate in the presence of fluctuation of the dark count rate, and compare the result with the result of the decoy-state without fluctuation.It is found that the key generation rate and maximal secure distance will be decreased under the influence of the fluctuation of the dark count rate.

  17. High counting rate, two-dimensional position sensitive timing RPC

    CERN Document Server

    Petrovici, M.; Simion, V; Bartos, D; Caragheorgheopol, G; Deppner, I; Adamczewski-Musch, J; Linev, S; Williams, MCS; Loizeau, P; Herrmann, N; Doroud, K; Radulescu, L; Constantin, F

    2012-01-01

    Resistive Plate Chambers (RPCs) are widely employed as muon trigger systems at the Large Hadron Collider (LHC) experiments. Their large detector volume and the use of a relatively expensive gas mixture make a closed-loop gas circulation unavoidable. The return gas of RPCs operated in conditions similar to the experimental background foreseen at LHC contains large amount of impurities potentially dangerous for long-term operation. Several gas-cleaning agents, characterized during the past years, are currently in use. New test allowed understanding of the properties and performance of a large number of purifiers. On that basis, an optimal combination of different filters consisting of Molecular Sieve (MS) 5Å and 4Å, and a Cu catalyst R11 has been chosen and validated irradiating a set of RPCs at the CERN Gamma Irradiation Facility (GIF) for several years. A very important feature of this new configuration is the increase of the cycle duration for each purifier, which results in better system stabilit...

  18. Instrumental oscillations in RHESSI count rates during solar flares

    CERN Document Server

    Inglis, A R; Dennis, B R; Kontar, E P; Nakariakov, V M; Struminsky, A B; Tolbert, A K

    2011-01-01

    Aims: We seek to illustrate the analysis problems posed by RHESSI spacecraft motion by studying persistent instrumental oscillations found in the lightcurves measured by RHESSI's X-ray detectors in the 6-12 keV and 12-25 keV energy range during the decay phase of the flares of 2004 November 4 and 6. Methods: The various motions of the RHESSI spacecraft which may contribute to the manifestation of oscillations are studied. The response of each detector in turn is also investigated. Results: We find that on 2004 November 6 the observed oscillations correspond to the nutation period of the RHESSI instrument. These oscillations are also of greatest amplitude for detector 5, while in the lightcurves of many other detectors the oscillations are small or undetectable. We also find that the variation in detector pointing is much larger during this flare than the counterexample of 2004 November 4. Conclusions: Sufficiently large nutation motions of the RHESSI spacecraft lead to clearly observable oscillations in count...

  19. Bone and gallium scans in mastocytosis: correlation with count rates, radiography, and microscopy

    Energy Technology Data Exchange (ETDEWEB)

    Ensslen, R.D. (Cross Cancer Inst., Edmonton, Alberta); Jackson, F.I.; Reid, A.M.

    1983-07-01

    Mastocytosis (urticaria pigmentosa) was proven in a patient suffering from severe back pain. A bone scan showed diffusely increased bone activity. Count rates were also abnormally elevated over several areas of the skeleton. Radiographs were consistent with mastocytosis in bone.

  20. Optimization of the ATLAS (s)MDT readout electronics for high counting rates

    Energy Technology Data Exchange (ETDEWEB)

    Kortner, Oliver; Kroha, Hubert; Nowak, Sebastian; Schmidt-Sommerfeld, Korbinian [Max-Planck-Institut fuer Physik (Werner-Heisenberg-Institut), Foehringer Ring 6, 80805 Muenchen (Germany)

    2016-07-01

    In the ATLAS muon spectrometer, Monitored Drift Tube (MDT) chambers are used for precise muon track measurement. For the high background rates expected at HL-LHC, which are mainly due to neutrons and photons produced by interactions of the proton collision products in the detector and shielding, new small-diameter muon drift tube (sMDT)-chambers with half the drift tube diameter of the MDT-chambers and ten times higher rate capability have been developed. The standard MDT readout electronics uses bipolar shaping in front of a discriminator. This shaping leads to an undershoot of same charge but opposite polarity following each pulse. With count rates also the probability of having the subsequent pulse in this undershoot increases, which leads to losses in efficiency and spatial resolution. In order to decrease this effect, discrete prototype electronics including Baseline Restoration has been developed. Results of their tests and data taken with them during muon beamtime measurements at CERN's Gamma Irradiation Facility will be presented. which causes a deterioration of signal pulses by preceding background hits, leading to losses in muon efficiency and drift tube spatial resolution. In order to mitigate these so-called signal pile-up effects, new readout electronics with active baseline restoration (BLR) is under development. Discrete prototype electronics with BLR functionality has been tested in laboratory measurements and in the Gamma Irradiation Facility at CERN under high γ-irradiation rates. Results of the measurements are presented.

  1. Modeling typical performance measures

    NARCIS (Netherlands)

    Weekers, Anke Martine

    2009-01-01

    In the educational, employment, and clinical context, attitude and personality inventories are used to measure typical performance traits. Statistical models are applied to obtain latent trait estimates. Often the same statistical models as the models used in maximum performance measurement are appl

  2. A Calibration of NICMOS Camera 2 for Low Count-Rates

    CERN Document Server

    Rubin, D; Amanullah, R; Barbary, K; Dawson, K S; Deustua, S; Faccioli, L; Fadeyev, V; Fakhouri, H K; Fruchter, A S; Gladders, M D; de Jong, R S; Koekemoer, A; Krechmer, E; Lidman, C; Meyers, J; Nordin, J; Perlmutter, S; Ripoche, P; Schlegel, D J; Spadafora, A; Suzuki, N; Project, The Supernova Cosmology

    2015-01-01

    NICMOS 2 observations are crucial for constraining distances to most of the existing sample of z > 1 SNe Ia. Unlike the conventional calibration programs, these observations involve long exposure times and low count rates. Reciprocity failure is known to exist in HgCdTe devices and a correction for this effect has already been implemented for high and medium count-rates. However observations at faint count-rates rely on extrapolations. Here instead, we provide a new zeropoint calibration directly applicable to faint sources. This is obtained via inter-calibration of NIC2 F110W/F160W with WFC3 in the low count-rate regime using z ~ 1 elliptical galaxies as tertiary calibrators. These objects have relatively simple near-IR SEDs, uniform colors, and their extended nature gives superior signal-to-noise at the same count rate than would stars. The use of extended objects also allows greater tolerances on PSF profiles. We find ST magnitude zeropoints (after the installation of the NICMOS cooling system, NCS) of 25....

  3. Optimization of high count rate event counting detector with Microchannel Plates and quad Timepix readout

    Energy Technology Data Exchange (ETDEWEB)

    Tremsin, A.S., E-mail: ast@ssl.berkeley.edu; Vallerga, J.V.; McPhate, J.B.; Siegmund, O.H.W.

    2015-07-01

    Many high resolution event counting devices process one event at a time and cannot register simultaneous events. In this article a frame-based readout event counting detector consisting of a pair of Microchannel Plates and a quad Timepix readout is described. More than 10{sup 4} simultaneous events can be detected with a spatial resolution of ~55 µm, while >10{sup 3} simultaneous events can be detected with <10 µm spatial resolution when event centroiding is implemented. The fast readout electronics is capable of processing >1200 frames/sec, while the global count rate of the detector can exceed 5×10{sup 8} particles/s when no timing information on every particle is required. For the first generation Timepix readout, the timing resolution is limited by the Timepix clock to 10–20 ns. Optimization of the MCP gain, rear field voltage and Timepix threshold levels are crucial for the device performance and that is the main subject of this article. These devices can be very attractive for applications where the photon/electron/ion/neutron counting with high spatial and temporal resolution is required, such as energy resolved neutron imaging, Time of Flight experiments in lidar applications, experiments on photoelectron spectroscopy and many others.

  4. Measures of rowing performance.

    Science.gov (United States)

    Smith, T Brett; Hopkins, Will G

    2012-04-01

    Accurate measures of performance are important for assessing competitive athletes in practi~al and research settings. We present here a review of rowing performance measures, focusing on the errors in these measures and the implications for testing rowers. The yardstick for assessing error in a performance measure is the random variation (typical or standard error of measurement) in an elite athlete's competitive performance from race to race: ∼1.0% for time in 2000 m rowing events. There has been little research interest in on-water time trials for assessing rowing performance, owing to logistic difficulties and environmental perturbations in performance time with such tests. Mobile ergometry via instrumented oars or rowlocks should reduce these problems, but the associated errors have not yet been reported. Measurement of boat speed to monitor on-water training performance is common; one device based on global positioning system (GPS) technology contributes negligible extra random error (0.2%) in speed measured over 2000 m, but extra error is substantial (1-10%) with other GPS devices or with an impeller, especially over shorter distances. The problems with on-water testing have led to widespread use of the Concept II rowing ergometer. The standard error of the estimate of on-water 2000 m time predicted by 2000 m ergometer performance was 2.6% and 7.2% in two studies, reflecting different effects of skill, body mass and environment in on-water versus ergometer performance. However, well trained rowers have a typical error in performance time of only ∼0.5% between repeated 2000 m time trials on this ergometer, so such trials are suitable for tracking changes in physiological performance and factors affecting it. Many researchers have used the 2000 m ergometer performance time as a criterion to identify other predictors of rowing performance. Standard errors of the estimate vary widely between studies even for the same predictor, but the lowest

  5. The performance measurement manifesto.

    Science.gov (United States)

    Eccles, R G

    1991-01-01

    The leading indicators of business performance cannot be found in financial data alone. Quality, customer satisfaction, innovation, market share--metrics like these often reflect a company's economic condition and growth prospects better than its reported earnings do. Depending on an accounting department to reveal a company's future will leave it hopelessly mired in the past. More and more managers are changing their company's performance measurement systems to track nonfinancial measures and reinforce new competitive strategies. Five activities are essential: developing an information architecture; putting the technology in place to support this architecture; aligning bonuses and other incentives with the new system; drawing on outside resources; and designing an internal process to ensure the other four activities occur. New technologies and more sophisticated databases have made the change to nonfinancial performance measurement systems possible and economically feasible. Industry and trade associations, consulting firms, and public accounting firms that already have well-developed methods for assessing market share and other performance metrics can add to the revolution's momentum--as well as profit from the business opportunities it presents. Every company will have its own key measures and distinctive process for implementing the change. But making it happen will always require careful preparation, perseverance, and the conviction of the CEO that it must be carried through. When one leading company can demonstrate the long-term advantage of its superior performance on quality or innovation or any other nonfinancial measure, it will change the rules for all its rivals forever.

  6. Enterprise performance measurement systems

    Directory of Open Access Journals (Sweden)

    Milija Bogavac

    2014-10-01

    Full Text Available Performance measurement systems are an extremely important part of the control and management actions, because in this way a company can determine its business potential, its market power, potential and current level of business efficiency. The significance of measurement consists in influencing the relationship between the results of reproduction (total volume of production, value of production, total revenue and profit and investments to achieve these results (factors of production spending and hiring capital in order to achieve the highest possible quality of the economy. (The relationship between the results of reproduction and investment to achieve them quantitatively determines economic success as the quality of the economy. Measuring performance allows the identification of the economic resources the company has, so looking at the key factors that affect its performance can help to determine the appropriate course of action.

  7. Improving the assessment of activity in samples with non-uniform distribution using the sum peak count rate.

    Science.gov (United States)

    Suvaila, Rares; Osvath, Iolanda; Sima, Octavian

    2013-11-01

    In this work a method for the evaluation of the activity when a point source containing (60)Co is located in an unknown position within a sample is developed. The method can be applied if the count rate in the 2,505 keV sum peak has an acceptable uncertainty. It is based on the correlation between the apparent efficiency for the 1,173 keV peak and the ratio of the count rate in the sum peak of 2,505 keV and in the 1,332 keV peak. The correlation was observed in the measurements of a (60)Co point source located in various positions in a soil sample. The measurements were done with a 47% efficiency n-type HPGe detector. The correlation is also observed in the measurements and simulations done with a Compton-suppressed spectrometer having a 100% n-type HPGe detector. The results obtained with the proposed method are less affected by the uncertainty of the position of the point source than the results obtained using the standard methods of activity evaluation. Copyright © 2013 Elsevier Ltd. All rights reserved.

  8. Linear-log counting-rate meter uses transconductance characteristics of a silicon planar transistor

    Science.gov (United States)

    Eichholz, J. J.

    1969-01-01

    Counting rate meter compresses a wide range of data values, or decades of current. Silicon planar transistor, operating in the zero collector-base voltage mode, is used as a feedback element in an operational amplifier to obtain the log response.

  9. The study of error for analysis in dynamic image from the error of count rates in Nal (Tl) scintillation camera

    Energy Technology Data Exchange (ETDEWEB)

    Oh, Joo Young; Kang, Chun Goo; Kim, Jung Yul; Oh, Ki Baek; Kim, Jae Sam [Dept. of Nuclear Medicine, Severance Hospital, Yonsei University, Seoul (Korea, Republic of); Park, Hoon Hee [Dept. of Radiological Technology, Shingu college, Sungnam (Korea, Republic of)

    2013-12-15

    measurement. Especially, we found a tendency that count rate changes over time at this study, and we proved that it can effect T{sub 1/2} . And also, there is need of appropriate phantoms and the method of quality management like this study, because there are not any advice or limitation degrees for domestic medical purpose scintillation camera.

  10. Nuclear Enterprise Performance Measurement

    Science.gov (United States)

    2011-03-01

    Figure 2-1 Balanced scorecard model ............................................................................11 Figure 2-2 Analytic Hierarchy...outcomes for each organization. Perhaps the most well-known performance measurement framework method is The Balanced Scorecard . The Balanced ...perspective)? 11 Figure 2-1. Balanced scorecard model. The Balanced Scorecard has evolved since its initial rise to popularity. It focuses less on

  11. Performance Measurement at Universities

    DEFF Research Database (Denmark)

    Lueg, Klarissa

    2014-01-01

    This paper proposes empirical approaches to testing the reliability, validity, and organizational effectiveness of student evaluations of teaching (SET) as a performance measurement instrument in knowledge management at the institutional level of universities. Departing from Weber’s concept...... of bureaucracy and critical responses to this concept, we discuss how contemporary SET are used as an instrument of organizational control at Danish universities. A discussion of the current state of performance measurement within the frame of new public management (NPM) and its impact on knowledge creation......, it can be investigated if SET actually contribute to teaching improvement by examining how the instrument is integrated into systematic ex-ante and ex-post organizational management. It is expected to find discrepancy between the proponents’ intent to evaluate teaching and the way the performance...

  12. Measuring Firm Performance

    DEFF Research Database (Denmark)

    Assaf, A. George; Josiassen, Alexander; Gillen, David

    2014-01-01

    Set in the airport industry, this paper measures firm performance using both desirable and bad outputs (i.e. airport delays). We first estimate a model that does not include the bad outputs and then a model that includes bad outputs. The results show important differences in the efficiency...... and productivity results depending on whether bad outputs are or are not included in the model. The differences reflect the resource cost to society and the potential cost to an airport if such externalities were internalized. Finally, the paper provides measures of shadow prices for the bad output, in our case...

  13. Correction of dead-time and pile-up in a detector array for constant and rapidly varying counting rates

    Energy Technology Data Exchange (ETDEWEB)

    Guerrero, C. [Centro de Investigaciones Medioambientales, Energéticas y Tecnológicas (CIEMAT), Madrid (Spain); Departamento de Física Atómica, Molecular y Nuclear, Universidad de Sevilla (Spain); Cano-Ott, D.; Mendoza, E. [Centro de Investigaciones Medioambientales, Energéticas y Tecnológicas (CIEMAT), Madrid (Spain); Wright, T. [University of Manchester, Manchester (United Kingdom)

    2015-03-21

    The effect of dead-time and pile-up in counting experiments may become a significant source of uncertainty if not properly taken into account. Although analytical solutions to this problem have been proposed for simple set-ups with one or two detectors, these are limited when it comes to arrays where time correlation between the detector modules is used, and also in situations of variable counting rates. In this paper we describe the dead-time and pile-up corrections applied to the n-TOF Total Absorption Calorimeter (TAC), a 4π γ-ray detector made of 40 BaF{sub 2} modules operating at the CERN n-TOF facility. Our method is based on the simulation of the complete signal detection and event reconstruction processes and can be applied as well in the case of rapidly varying counting rates. The method is discussed in detail and then we present its successful application to the particular case of the measurement of {sup 238}U(n, γ) reactions with the TAC detector.

  14. Dependence of the neutron monitor count rate and time delay distribution on the rigidity spectrum of primary cosmic rays

    Science.gov (United States)

    Mangeard, P.-S.; Ruffolo, D.; Sáiz, A.; Nuntiyakul, W.; Bieber, J. W.; Clem, J.; Evenson, P.; Pyle, R.; Duldig, M. L.; Humble, J. E.

    2016-12-01

    Neutron monitors are the premier instruments for precisely tracking time variations in the Galactic cosmic ray flux at GeV-range energies above the geomagnetic cutoff at the location of measurement. Recently, a new capability has been developed to record and analyze the neutron time delay distribution (related to neutron multiplicity) to infer variations in the cosmic ray spectrum as well. In particular, from time delay histograms we can determine the leader fraction L, defined as the fraction of neutrons that did not follow a previous neutron detection in the same tube from the same atmospheric secondary particle. Using data taken during 2000-2007 by a shipborne neutron monitor latitude survey, we observe a strong dependence of the count rate and L on the geomagnetic cutoff. We have modeled this dependence using Monte Carlo simulations of cosmic ray interactions in the atmosphere and in the neutron monitor. We present new yield functions for the count rate of a neutron monitor at sea level. The simulation results show a variation of L with geomagnetic cutoff as observed by the latitude survey, confirming that these changes in L can be attributed to changes in the cosmic ray spectrum arriving at Earth's atmosphere. We also observe a variation in L with time at a fixed cutoff, which reflects the evolution of the cosmic ray spectrum with the sunspot cycle, known as solar modulation.

  15. Performance Measurement at Universities

    DEFF Research Database (Denmark)

    Lueg, Klarissa

    2014-01-01

    and legitimation forms the basis for proposing four steps of investigation. The suggested mixed-methods approach comprises the following: first, thematic analysis can serve as a tool to evaluate the legitimacy discourse as initiated by official SET affirmative documents by government, university, and students......, it can be investigated if SET actually contribute to teaching improvement by examining how the instrument is integrated into systematic ex-ante and ex-post organizational management. It is expected to find discrepancy between the proponents’ intent to evaluate teaching and the way the performance......This paper proposes empirical approaches to testing the reliability, validity, and organizational effectiveness of student evaluations of teaching (SET) as a performance measurement instrument in knowledge management at the institutional level of universities. Departing from Weber’s concept...

  16. Use of Feedback to Maximize Photon Count Rate in XRF Spectroscopy

    CERN Document Server

    Lucas, Benjamin A

    2016-01-01

    The effective bandwidth of an energy dispersive x-ray fluorescence spectroscopy system is limited by the timing of incident photons. When multiple photons strike the detector within the processing time of the detector photon pile-up occurs and the signal received by the detector during this interval must be ignored. In conventional ED-XRF systems the probability of a photon being incident upon the detector is uniform over time, and thus pile-up follows Poisson statistics. In this paper we present a mathematical treatment of the relationship between photon timing statistics and the count rate of an XRF system. We show that it is possible to increase the maximum count rates by applying feedback from the detector to the x-ray source to alter the timing statistics of photon emission. Monte-Carlo simulations, show that this technique can increase the maximum count rate of an XRF spectroscopy system by a factor of 2.94 under certain circumstances.

  17. Effects, determination, and correction of count rate nonlinearity in multi-channel analog electron detectors

    Energy Technology Data Exchange (ETDEWEB)

    Reber, T. J.; Plumb, N. C.; Waugh, J. A.; Dessau, D. S. [Department of Physics, University of Colorado, Boulder, Colorado 80309-0390 (United States)

    2014-04-15

    Detector counting rate nonlinearity, though a known problem, is commonly ignored in the analysis of angle resolved photoemission spectroscopy where modern multichannel electron detection schemes using analog intensity scales are used. We focus on a nearly ubiquitous “inverse saturation” nonlinearity that makes the spectra falsely sharp and beautiful. These artificially enhanced spectra limit accurate quantitative analysis of the data, leading to mistaken spectral weights, Fermi energies, and peak widths. We present a method to rapidly detect and correct for this nonlinearity. This algorithm could be applicable for a wide range of nonlinear systems, beyond photoemission spectroscopy.

  18. NEMA NU 2-2007 performance measurements of the Siemens Inveon™ preclinical small animal PET system

    Science.gov (United States)

    Kemp, Brad J.; Hruska, Carrie B.; McFarland, Aaron R.; Lenox, Mark W.; Lowe, Val J.

    2009-04-01

    National Electrical Manufacturers Association (NEMA) NU 2-2007 performance measurements were conducted on the Inveon™ preclinical small animal PET system developed by Siemens Medical Solutions. The scanner uses 1.51 × 1.51 × 10 mm LSO crystals grouped in 20 × 20 blocks; a tapered light guide couples the LSO crystals of a block to a position-sensitive photomultiplier tube. There are 80 rings with 320 crystals per ring and the ring diameter is 161 mm. The transaxial and axial fields of view (FOVs) are 100 and 127 mm, respectively. The scanner can be docked to a CT scanner; the performance characteristics of the CT component are not included herein. Performance measurements of spatial resolution, sensitivity, scatter fraction and count rate performance were obtained for different energy windows and coincidence timing window widths. For brevity, the results described here are for an energy window of 350-650 keV and a coincidence timing window of 3.43 ns. The spatial resolution at the center of the transaxial and axial FOVs was 1.56, 1.62 and 2.12 mm in the tangential, radial and axial directions, respectively, and the system sensitivity was 36.2 cps kBq-1 for a line source (7.2% for a point source). For mouse- and rat-sized phantoms, the scatter fraction was 5.7% and 14.6%, respectively. The peak noise equivalent count rate with a noisy randoms estimate was 1475 kcps at 130 MBq for the mouse-sized phantom and 583 kcps at 74 MBq for the rat-sized phantom. The performance measurements indicate that the Inveon™ PET scanner is a high-resolution tomograph with excellent sensitivity that is capable of imaging at a high count rate.

  19. NEMA NU 2-2007 performance measurements of the Siemens Inveon preclinical small animal PET system.

    Science.gov (United States)

    Kemp, Brad J; Hruska, Carrie B; McFarland, Aaron R; Lenox, Mark W; Lowe, Val J

    2009-04-21

    National Electrical Manufacturers Association (NEMA) NU 2-2007 performance measurements were conducted on the Inveon preclinical small animal PET system developed by Siemens Medical Solutions. The scanner uses 1.51 x 1.51 x 10 mm LSO crystals grouped in 20 x 20 blocks; a tapered light guide couples the LSO crystals of a block to a position-sensitive photomultiplier tube. There are 80 rings with 320 crystals per ring and the ring diameter is 161 mm. The transaxial and axial fields of view (FOVs) are 100 and 127 mm, respectively. The scanner can be docked to a CT scanner; the performance characteristics of the CT component are not included herein. Performance measurements of spatial resolution, sensitivity, scatter fraction and count rate performance were obtained for different energy windows and coincidence timing window widths. For brevity, the results described here are for an energy window of 350-650 keV and a coincidence timing window of 3.43 ns. The spatial resolution at the center of the transaxial and axial FOVs was 1.56, 1.62 and 2.12 mm in the tangential, radial and axial directions, respectively, and the system sensitivity was 36.2 cps kBq(-1) for a line source (7.2% for a point source). For mouse- and rat-sized phantoms, the scatter fraction was 5.7% and 14.6%, respectively. The peak noise equivalent count rate with a noisy randoms estimate was 1475 kcps at 130 MBq for the mouse-sized phantom and 583 kcps at 74 MBq for the rat-sized phantom. The performance measurements indicate that the Inveon PET scanner is a high-resolution tomograph with excellent sensitivity that is capable of imaging at a high count rate.

  20. Time and position resolution of high granularity, high counting rate MRPC for the inner zone of the CBM-TOF wall

    CERN Document Server

    Petriş, M; Caragheorgheopol, G.; Deppner, I.; Frühauf, J.; Herrmann, N.; Kiš, M.; Loizeau, P-A.; Petrovici, M.; Rǎdulescu, L.; Simion, V.; Simon, C.

    2016-01-01

    Multi-gap RPC prototypes with readout on a multi-strip electrode were developed for the small polar angle region of the CBM-TOF subdetector, the most demanding zone in terms of granularity and counting rate. The prototypes are based on low resistivity ($\\sim$10$^{10}$ $\\Omega$cm) glass electrodes for performing in high counting rate environment. The strip width/pitch size was chosen such to fulfill the impedance matching with the front-end electronics and the granularity requirements of the innermost zone of the CBM-TOF wall. The in-beam tests using secondary particles produced in heavy ion collisions on a Pb target at SIS18 - GSI Darmstadt and SPS - CERN were focused on the performance of the prototype in conditions similar to the ones expected at SIS100/FAIR. An efficiency larger than 98\\% and a system time resolution in the order of 70~-~80~ps were obtained in high counting rate and high multiplicity environment.

  1. Time and position resolution of high granularity, high counting rate MRPC for the inner zone of the CBM-TOF wall

    Science.gov (United States)

    Petriş, M.; Bartoş, D.; Caragheorgheopol, G.; Deppner, I.; Frühauf, J.; Herrmann, N.; Kiš, M.; Loizeau, P.-A.; Petrovici, M.; Rădulescu, L.; Simion, V.; Simon, C.

    2016-09-01

    Multi-gap RPC prototypes with a multi-strip-electrode readout were developed for the small polar angle region of the CBM-TOF subdetector, the most demanding zone in terms of granularity and counting rate. The prototypes are based on using low resistivity (~ 1010 Ω·cm) glass electrodes for performing in high counting rate environment. The strip width/pitch size was chosen such to fulfill the impedance matching with the front-end electronics and the granularity requirements of the innermost zone of the CBM-TOF wall. The in-beam tests using secondary particles produced in heavy ion collisions on a Pb target at SIS18—GSI Darmstadt and SPS—CERN were focused on the performance of the prototypes in conditions similar to the ones expected at SIS100/FAIR. An efficiency larger than 98% and a system time resolution in the order of 70-80 ps were obtained in high counting rate and high multiplicity environment.

  2. Pulse shape discrimination of Cs2LiYCl6:Ce3+ detectors at high count rate based on triangular and trapezoidal filters

    Science.gov (United States)

    Wen, Xianfei; Enqvist, Andreas

    2017-09-01

    Cs2LiYCl6:Ce3+ (CLYC) detectors have demonstrated the capability to simultaneously detect γ-rays and thermal and fast neutrons with medium energy resolution, reasonable detection efficiency, and substantially high pulse shape discrimination performance. A disadvantage of CLYC detectors is the long scintillation decay times, which causes pulse pile-up at moderate input count rate. Pulse processing algorithms were developed based on triangular and trapezoidal filters to discriminate between neutrons and γ-rays at high count rate. The algorithms were first tested using low-rate data. They exhibit a pulse-shape discrimination performance comparable to that of the charge comparison method, at low rate. Then, they were evaluated at high count rate. Neutrons and γ-rays were adequately identified with high throughput at rates of up to 375 kcps. The algorithm developed using the triangular filter exhibits discrimination capability marginally higher than that of the trapezoidal filter based algorithm irrespective of low or high rate. The algorithms exhibit low computational complexity and are executable on an FPGA in real-time. They are also suitable for application to other radiation detectors whose pulses are piled-up at high rate owing to long scintillation decay times.

  3. The Politics of Performance Measurement

    DEFF Research Database (Denmark)

    Bjørnholt, Bente; Larsen, Flemming

    2014-01-01

    Performance measurements are meant to improve public decision making and organizational performance. But performance measurements are far from always rational tools for problem solving, they are also political instruments. The central question addressed in this article is how performance...... measurement affects public policy. The aim is to conceptualize the political consequences of performance measurements and of special concern is how performance systems influence how political decisions are made, what kind of political decisions are conceivable, and how they are implemented. The literature...... on the utilization of evaluation and performance measurements is applied to analyse how performance measurements affect the political process of goal-setting, implementation and learning. The article concludes that performance measurements may have intended and unintended effects and they seem to have a retroactive...

  4. Performance Measurement and Faculty Pay

    Institute of Scientific and Technical Information of China (English)

    LUO Pin-liang; RUI Ming-jie

    2002-01-01

    In classic agency models, first best efficiency can't be achieved due to the trade-off between risk and incentives except that agency is risk neutral. Whereas if the principal's objective is not contractible,an alternative objective performance measurement which is contractible is always proposed. However, if the reaction of this objective performance measurement to agency's effort differs from that of the principal's objective, the agent would game performance measures, which leads to loss of efficiency, even if agency is risk neutral. By adding subjective weights on objective measures, or combination of subjective performance measurement with objective performance measurement, efficiency can be regained. Implications for faculty pay are also discussed.

  5. Measuring the Company Performance

    Directory of Open Access Journals (Sweden)

    Ion Stancu

    2006-01-01

    Full Text Available According to the logics of the efficient capital investment, the management of the investment of the saving capital in the company’s assets must conclude, on the end of the financial year, with a plus of real value (NPV > 0. From this point of view, in this paper we suggest the usage of an investment valuation model for the assessment of the company managerial and technological performance. Supposing the book value is a proxy of the just value (of assets and operational results and supposing the capital cost is correctly estimated, we evaluate the company’s performance both by the net present value model, and also by the company’s ability to create a surplus of the invested capital (NPV >0. Our paper also aims to identify the performance of the financial breakeven point (for which NPV is at least equal to zero as the minimum acceptable level for the company’s activity. Under this critical sales point, the company goes through the undervaluation of shareholders fortune even if the company’s sales are greater than accounting breakeven point. The performance’s activity level is one which the managers recover and surpass the cost of capital, cost which stand for the normal activity benchmark. The risks of applying of our suggested model we support go down to the confidence of accounting data and of the cost of capital estimating. In spite all of this, the usage of a sensitivity analysis to search an average NPV would leads to the company’s performance valuation within investment logic with a high information power.

  6. Measuring the Company Performance

    Directory of Open Access Journals (Sweden)

    Ion Stancu

    2006-03-01

    Full Text Available According to the logics of the efficient capital investment, the management of the investment of the saving capital in the company’s assets must conclude, on the end of the financial year, with a plus ofreal value (NPV > 0. From this point of view, in this paper we suggest the usage of an investment valuationmodel for the assessment of the company managerial and technological performance. Supposing the book value is a proxy of the just value (of assets and operational results and supposing the capital cost iscorrectly estimated, we evaluate the company’s performance both by the net present value model, and also by the company’s ability to create a surplus of the invested capital (NPV >0.Our paper also aims to identify the performance of the financial breakeven point (for which NPV is at least equal to zero as the minimum acceptable level for the company’s activity. Under this critical sales point, the company goes through the undervaluation of shareholders fortune even if the company’s sales are greater than accounting breakeven point. The performance’s activity level is one which the managers recover and surpass the cost of capital, cost which stand for the normal activity benchmark.The risks of applying of our suggested model we support go down to the confidence of accounting data and of the cost of capital estimating. In spite all of this, the usage of a sensitivity analysis to search anaverage NPV would leads to the company’s performance valuation within investment logic with a high information power.

  7. Study of the counting rate capability of MRPC detectors built with soda lime glass

    Science.gov (United States)

    Forster, R.; Margoto Rodríguez, O.; Park, W.; Rodríguez Rodríguez, A.; Williams, M. C. S.; Zichichi, A.; Zuyeuski, R.

    2016-09-01

    We report the results of three MRPC detectors built with soda lime glass and tested in the T10 beam line at CERN. The detectors consist of a stack of 280 μm thick glass sheets with 6 gaps of 220 μm . We built two identical MRPCs, except one had the edges of glass treated with resistive paint. A third detector was built with one HV electrode painted as strips. The detectors' efficiency and time resolution were studied at different particle flux in a pulsed beam environment. The results do not show any improvement with the painted edge technique at higher particle flux. We heated the MRPCs up to 40 °C to evaluate the influence of temperature in the rate capability. Results from this warming has indicated an improvement on the rate capability. The dark count rates show a significant dependence with the temperature.

  8. Measuring Corporate Sustainability Performance

    Directory of Open Access Journals (Sweden)

    Eugen Nicolăescu

    2015-01-01

    Full Text Available The aim of the present study is to examine and evaluate the evolving character of sustainability management in corporations, the significance of environmental protection and sustainability, and barriers to carrying out an incorporated and strategic firm-wide advance of social responsibility. In the present paper, we focus on the contribution of sustainability undertakings towards enhancing corporate performance, the financial involvements of sustainability position and operation, and the chief function of values in corporate policy. Our paper contributes to the literature by supplying proof of elements that lead to the triumph of business patterns for sustainable development, processes through which stakeholders are affecting corporate sustainability conduct, and the link between economic growth and the environment.

  9. Patient-dependent count-rate adaptive normalization for PET detector efficiency with delayed-window coincidence events.

    Science.gov (United States)

    Niu, Xiaofeng; Ye, Hongwei; Xia, Ting; Asma, Evren; Winkler, Mark; Gagnon, Daniel; Wang, Wenli

    2015-07-07

    Quantitative PET imaging is widely used in clinical diagnosis in oncology and neuroimaging. Accurate normalization correction for the efficiency of each line-of- response is essential for accurate quantitative PET image reconstruction. In this paper, we propose a normalization calibration method by using the delayed-window coincidence events from the scanning phantom or patient. The proposed method could dramatically reduce the 'ring' artifacts caused by mismatched system count-rates between the calibration and phantom/patient datasets. Moreover, a modified algorithm for mean detector efficiency estimation is proposed, which could generate crystal efficiency maps with more uniform variance. Both phantom and real patient datasets are used for evaluation. The results show that the proposed method could lead to better uniformity in reconstructed images by removing ring artifacts, and more uniform axial variance profiles, especially around the axial edge slices of the scanner. The proposed method also has the potential benefit to simplify the normalization calibration procedure, since the calibration can be performed using the on-the-fly acquired delayed-window dataset.

  10. Alternative Optimizations of X-ray TES Arrays: Soft X-rays, High Count Rates, and Mixed-Pixel Arrays

    Science.gov (United States)

    Kilbourne, C. A.; Bandler, S. R.; Brown, A.-D.; Chervenak, J. A.; Figueroa-Feliciano, E.; Finkbeiner, F. M.; Iyomoto, N.; Kelley, R. L.; Porter, F. S.; Smith, S. J.

    2007-01-01

    We are developing arrays of superconducting transition-edge sensors (TES) for imaging spectroscopy telescopes such as the XMS on Constellation-X. While our primary focus has been on arrays that meet the XMS requirements (of which, foremost, is an energy resolution of 2.5 eV at 6 keV and a bandpass from approx. 0.3 keV to 12 keV), we have also investigated other optimizations that might be used to extend the XMS capabilities. In one of these optimizations, improved resolution below 1 keV is achieved by reducing the heat capacity. Such pixels can be based on our XMS-style TES's with the separate absorbers omitted. These pixels can added to an array with broadband response either as a separate array or interspersed, depending on other factors that include telescope design and science requirements. In one version of this approach, we have designed and fabricated a composite array of low-energy and broad-band pixels to provide high spectral resolving power over a broader energy bandpass than could be obtained with a single TES design. The array consists of alternating pixels with and without overhanging absorbers. To explore optimizations for higher count rates, we are also optimizing the design and operating temperature of pixels that are coupled to a solid substrate. We will present the performance of these variations and discuss other optimizations that could be used to enhance the XMS or enable other astrophysics experiments.

  11. Quantum-counting CT in the regime of count-rate paralysis: introduction of the pile-up trigger method

    Science.gov (United States)

    Kappler, S.; Hölzer, S.; Kraft, E.; Stierstorfer, K.; Flohr, T.

    2011-03-01

    The application of quantum-counting detectors in clinical Computed Tomography (CT) is challenged by extreme X-ray fluxes provided by modern high-power X-ray tubes. Scanning of small objects or sub-optimal patient positioning may lead to situations where those fluxes impinge on the detector without attenuation. Even in operation modes optimized for high-rate applications, with small pixels and high bias voltage, CdTe/CdZnTe detectors deliver pulses in the range of several nanoseconds. This can result in severe pulse pile-up causing detector paralysis and ambiguous detector signals. To overcome this problem we introduce the pile-up trigger, a novel method that provides unambiguous detector signals in rate regimes where classical rising-edge counters run into count-rate paralysis. We present detailed CT image simulations assuming ideal sensor material not suffering from polarization effects at high X-ray fluxes. This way we demonstrate the general feasibility of the pile-up trigger method and quantify resulting imaging properties such as contrasts, image noise and dual-energy performance in the high-flux regime of clinical CT devices.

  12. Construction and Test of Muon Drift Tube Chambers for High Counting Rates

    CERN Document Server

    Schwegler, Philipp; Dubbert, Jörg

    2010-01-01

    Since the start of operation of the Large Hadron Collider (LHC) at CERN on 20 November 2009, the instantaneous luminosity is steadily increasing. The muon spectrometer of the ATLAS detector at the LHC is instrumented with trigger and precision tracking chambers in a toroidal magnetic field. Monitored Drift-Tube (MDT) chambers are employed as precision tracking chambers, complemented by Cathode Strip Chambers (CSC) in the very forward region where the background counting rate due to neutrons and γ's produced in shielding material and detector components is too high for the MDT chambers. After several upgrades of the CERN accelerator system over the coming decade, the instantaneous luminosity is expected to be raised to about five times the LHC design luminosity. This necessitates replacement of the muon chambers in the regions with the highest background radiation rates in the so-called Small Wheels, which constitute the innermost layers of the muon spectrometer end-caps, by new detectors with higher rate cap...

  13. Development of Fast High-Resolution Muon Drift-Tube Detectors for High Counting Rates

    CERN Document Server

    INSPIRE-00287945; Dubbert, J.; Horvat, S.; Kortner, O.; Kroha, H.; Legger, F.; Richter, R.; Adomeit, S.; Biebel, O.; Engl, A.; Hertenberger, R.; Rauscher, F.; Zibell, A.

    2011-01-01

    Pressurized drift-tube chambers are e?cient detectors for high-precision tracking over large areas. The Monitored Drift-Tube (MDT) chambers of the muon spectrometer of the ATLAS detector at the Large Hadron Collider (LHC) reach a spatial resolution of 35 micons and almost 100% tracking e?ciency with 6 layers of 30 mm diameter drift tubes operated with Ar:CO2 (93:7) gas mixture at 3 bar and a gas gain of 20000. The ATLAS MDT chambers are designed to cope with background counting rates due to neutrons and gamma-rays of up to about 300 kHz per tube which will be exceeded for LHC luminosities larger than the design value of 10-34 per square cm and second. Decreasing the drift-tube diameter to 15 mm while keeping the other parameters, including the gas gain, unchanged reduces the maximum drift time from about 700 ns to 200 ns and the drift-tube occupancy by a factor of 7. New drift-tube chambers for the endcap regions of the ATLAS muon spectrometer have been designed. A prototype chamber consisting of 12 times 8 l...

  14. Statistical analysis of dark count rate in Geiger-mode APD FPAs

    Science.gov (United States)

    Itzler, Mark A.; Krishnamachari, Uppili; Chau, Quan; Jiang, Xudong; Entwistle, Mark; Owens, Mark; Slomkowski, Krystyna

    2014-10-01

    We present a temporal statistical analysis of the array-level dark count behavior of Geiger-mode avalanche photodiode (GmAPD) focal plane arrays that distinguishes between Poissonian intrinsic dark count rate and non-Poissonian crosstalk counts by considering "inter-arrival" times between successive counts from the entire array. For 32 x 32 format sensors with 100 μm pixel pitch, we show the reduction of crosstalk for smaller active area sizes within the pixel. We also compare the inter-arrival time behavior for arrays with narrow band (900 - 1100 nm) and broad band (900 - 1600 nm) spectral response. We then consider a similar analysis of larger format 128 x 32 arrays. As a complement to the temporal analysis, we describe the results of a spatial analysis of crosstalk events. Finally, we propose a simple model for the impact of crosstalk events on the Poissonian statistics of intrinsic dark counts that provides a qualitative explanation for the results of the inter-arrival time analysis for arrays with varying degrees of crosstalk.

  15. Preamplifier development for high count-rate, large dynamic range readout of inorganic scintillators

    Energy Technology Data Exchange (ETDEWEB)

    Keshelashvili, Irakli; Erni, Werner; Steinacher, Michael; Krusche, Bernd; Collaboration: PANDA-Collaboration

    2013-07-01

    Electromagnetic calorimeter are central component of many experiments in nuclear and particle physics. Modern ''trigger less'' detectors run with very high count-rates, require good time and energy resolution, and large dynamic range. In addition photosensors and preamplifiers must work in hostile environments (magnetic fields). Due to later constraints mainly Avalanche Photo Diodes (APD's), Vacuum Photo Triodes (VPT's), and Vacuum Photo Tetrodes (VPTT's) are used. A disadvantage is their low gain which together with other requirements is a challenge for the preamplifier design. Our group has developed special Low Noise / Low Power (LNP) preamplifier for this purpose. They will be used to equip PANDA EMC forward end-cap (dynamic range 15'000, rate 1MHz), where the PWO II crystals and preamplifier have to run in an environment cooled down to -25{sup o}C. Further application is the upgrade of the Crystal Barrel detector at the Bonn ELSA accelerator with APD readout for which special temperature comparison of the APD gain and good time resolution is necessary. Development and all test procedures after the mass production done by our group during past several years in Basel University will be reported.

  16. A count-rate model for PET scanners using pixelated Anger-logic detectors with different scintillators

    Energy Technology Data Exchange (ETDEWEB)

    Surti, S; Karp, J S [Department of Radiology, University of Pennsylvania, 110 Donner Building (HUP), 3400 Spruce Street, Philadelphia, PA 19104 (United States)

    2005-12-07

    A high count-rate simulation (HCRSim) model has been developed so that all results are derived from fundamental physics principles. Originally developed to study the behaviour of continuous sodium iodide (NaI(Tl)) detectors, this model is now applied to PET scanners based on pixelated Anger-logic detectors using lanthanum bromide (LaBr{sub 3}), gadolinium orthosilicate (GSO) and lutetium orthosilicate (LSO) scintillators. This simulation has been used to study the effect on scanner deadtime and pulse pileup at high activity levels due to the scintillator stopping power ({mu}), decay time ({tau}) and energy resolution. Simulations were performed for a uniform 20 cm diameter x 70 cm long cylinder (NEMA NU2-2001 standard) in a whole-body scanner with an 85 cm ring diameter and a 25 cm axial field-of-view. Our results for these whole-body scanners demonstrate the potential of a pixelated Anger-logic detector and the relationship of its performance with the scanner NEC rate. Faster signal decay and short coincidence timing window lead to a reduction in deadtime and randoms fraction in the LaBr{sub 3} and LSO scanners compared to GSO. The excellent energy resolution of LaBr{sub 3} leads to the lowest scatter fraction for all scanners and helps compensate for reduced sensitivity compared to the GSO and LSO scanners, leading to the highest NEC values at high activity concentrations. The LSO scanner has the highest sensitivity of all the scanner designs investigated here, therefore leading to the highest peak NEC value but at a lower activity concentration than that of LaBr{sub 3}.

  17. High-voltage integrated active quenching circuit for single photon count rate up to 80 Mcounts/s.

    Science.gov (United States)

    Acconcia, Giulia; Rech, Ivan; Gulinatti, Angelo; Ghioni, Massimo

    2016-08-01

    Single photon avalanche diodes (SPADs) have been subject to a fast improvement in recent years. In particular, custom technologies specifically developed to fabricate SPAD devices give the designer the freedom to pursue the best detector performance required by applications. A significant breakthrough in this field is represented by the recent introduction of a red enhanced SPAD (RE-SPAD) technology, capable of attaining a good photon detection efficiency in the near infrared range (e.g. 40% at a wavelength of 800 nm) while maintaining a remarkable timing resolution of about 100ps full width at half maximum. Being planar, the RE-SPAD custom technology opened the way to the development of SPAD arrays particularly suited for demanding applications in the field of life sciences. However, to achieve such excellent performance custom SPAD detectors must be operated with an external active quenching circuit (AQC) designed on purpose. Next steps toward the development of compact and practical multichannel systems will require a new generation of monolithically integrated AQC arrays. In this paper we present a new, fully integrated AQC fabricated in a high-voltage 0.18 µm CMOS technology able to provide quenching pulses up to 50 Volts with fast leading and trailing edges. Although specifically designed for optimal operation of RE-SPAD devices, the new AQC is quite versatile: it can be used with any SPAD detector, regardless its fabrication technology, reaching remarkable count rates up to 80 Mcounts/s and generating a photon detection pulse with a timing jitter as low as 119 ps full width at half maximum. The compact design of our circuit has been specifically laid out to make this IC a suitable building block for monolithically integrated AQC arrays.

  18. A count-rate model for PET scanners using pixelated Anger-logic detectors with different scintillators.

    Science.gov (United States)

    Surti, S; Karp, J S

    2005-12-07

    A high count-rate simulation (HCRSim) model has been developed so that all results are derived from fundamental physics principles. Originally developed to study the behaviour of continuous sodium iodide (NaI(Tl)) detectors, this model is now applied to PET scanners based on pixelated Anger-logic detectors using lanthanum bromide (LaBr(3)), gadolinium orthosilicate (GSO) and lutetium orthosilicate (LSO) scintillators. This simulation has been used to study the effect on scanner deadtime and pulse pileup at high activity levels due to the scintillator stopping power (mu), decay time (tau) and energy resolution. Simulations were performed for a uniform 20 cm diameter x 70 cm long cylinder (NEMA NU2-2001 standard) in a whole-body scanner with an 85 cm ring diameter and a 25 cm axial field-of-view. Our results for these whole-body scanners demonstrate the potential of a pixelated Anger-logic detector and the relationship of its performance with the scanner NEC rate. Faster signal decay and short coincidence timing window lead to a reduction in deadtime and randoms fraction in the LaBr(3) and LSO scanners compared to GSO. The excellent energy resolution of LaBr(3) leads to the lowest scatter fraction for all scanners and helps compensate for reduced sensitivity compared to the GSO and LSO scanners, leading to the highest NEC values at high activity concentrations. The LSO scanner has the highest sensitivity of all the scanner designs investigated here, therefore leading to the highest peak NEC value but at a lower activity concentration than that of LaBr(3).

  19. Performance Measurement of Research Activitities

    DEFF Research Database (Denmark)

    Jakobsen, Morten; Jensen, Tina Blegind; Peyton, Margit Malmmose

    Performance measurements have made their entry into the world of universities. Every research activity is registered in a database and the output measures form the foundation for managerial decisions. The purpose of this chapter is to investigate the registration practices among researchers...... to the initial registration inscriptions and thus make decisions based on aggregated data that have been cut off from the original phenomena....

  20. Methodology of Pilot Performance Measurements

    Directory of Open Access Journals (Sweden)

    Peter Kalavsky

    2017-04-01

    Full Text Available The article is devoted to the development of the methodology of measuring pilot performance under real flight conditions. It provides the basic information on a research project realized to obtain new information regarding training and education of pilots. The introduction is focused on the analytical part of the project and the outputs in terms of the current state of the art. Detailed view is cast on the issue of measuring pilot performance under specific conditions of the cockpit or the flight simulator. The article is zooming in on the two selected and developed methods of pilot performance in terms of the defined indicators evaluated, conditions of compliance for conducting research and procedures of the methodology of pilot performance measurements.

  1. Understanding Process Performance Measurement Systems

    Directory of Open Access Journals (Sweden)

    Ljubica MilanoviÊ Glavan

    2011-01-01

    Full Text Available The purpose of this paper is to analyze the current state of Process Performance Measurement Systems (PPMS by means of a systematic review of literature. The PPMS literature is reviewed using a systematic approach. Based on an extensive literature review only twelve articles that contain the term PPMS in the title were found. The literature analysis showed that PPMS is a relatively new topic in the area of performance measurement. In order to understand PPMS, it was crucial to explain the concepts of business process management, business performance measurement and Performance Measurement System (PMS which are well known and used in the literature and practice. PPMS is a special type of PMS that should be used in process-oriented organizations. Limitations of this research lie in the fact that all the conclusions were derived only from the literature, not empirical research. The results presented in the paper continue towards providing an updated overview of the current state of performance measurement, especially PPMS in order to identify the existing research gaps on which ongoing and future research efforts regarding this topic can be focused.

  2. Performance measurement of mobile manipulators

    Science.gov (United States)

    Bostelman, Roger; Hong, Tsai; Marvel, Jeremy

    2015-05-01

    This paper describes a concept for measuring the reproducible performance of mobile manipulators to be used for assembly or other similar tasks. An automatic guided vehicle with an onboard robot arm was programmed to repeatedly move to and stop at a novel, reconfigurable mobile manipulator artifact (RMMA), sense the RMMA, and detect targets on the RMMA. The manipulator moved a laser retroreflective sensor to detect small reflectors that can be reconfigured to measure various manipulator positions and orientations (poses). This paper describes calibration of a multi-camera, motion capture system using a 6 degree-of-freedom metrology bar and then using the camera system as a ground truth measurement device for validation of the reproducible mobile manipulator's experiments and test method. Static performance measurement of a mobile manipulator using the RMMA has proved useful for relatively high tolerance pose estimation and other metrics that support standard test method development for indexed and dynamic mobile manipulator applications.

  3. Verifiable Network-Performance Measurements

    CERN Document Server

    Argyraki, Katerina; Singla, Ankit

    2010-01-01

    In the current Internet, there is no clean way for affected parties to react to poor forwarding performance: when a domain violates its Service Level Agreement (SLA) with a contractual partner, the partner must resort to ad-hoc probing-based monitoring to determine the existence and extent of the violation. Instead, we propose a new, systematic approach to the problem of forwarding-performance verification. Our mechanism relies on voluntary reporting, allowing each domain to disclose its loss and delay performance to its neighbors; it does not disclose any information regarding the participating domains' topology or routing policies beyond what is already publicly available. Most importantly, it enables verifiable performance measurements, i.e., domains cannot abuse it to significantly exaggerate their performance. Finally, our mechanism is tunable, allowing each participating domain to determine how many resources to devote to it independently (i.e., without any inter-domain coordination), exposing a control...

  4. 76 FR 70653 - Performance Measurement

    Science.gov (United States)

    2011-11-15

    ... 39 CFR Part 3055 Performance Measurement AGENCY: Postal Regulatory Commission. ACTION: Final rule... rules consistent with the Postal Service's reporting proposals. \\4\\ Letter from Shoshana M. Grove... Public Representative and David B. Popkin (Popkin) commented on the proposed rules.\\6\\ The Postal Service...

  5. Gamma-ray spectroscopy at MHz counting rates with a compact LaBr{sub 3} detector and silicon photomultipliers for fusion plasma applications

    Energy Technology Data Exchange (ETDEWEB)

    Nocente, M., E-mail: massimo.nocente@mib.infn.it [EUROfusion Consortium, JET, Culham Science Centre, Abingdon (United Kingdom); Dipartimento di Fisica, Università di Milano-Bicocca, Milano (Italy); Istituto di Fisica del Plasma “Piero Caldirola,” Milano (Italy); Rigamonti, D.; Croci, G.; Gorini, G. [Dipartimento di Fisica, Università di Milano-Bicocca, Milano (Italy); Istituto di Fisica del Plasma “Piero Caldirola,” Milano (Italy); Perseo, V. [Dipartimento di Fisica, Università di Milano-Bicocca, Milano (Italy); Tardocchi, M.; Cremona, A.; Muraro, A. [Istituto di Fisica del Plasma “Piero Caldirola,” Milano (Italy); Boltruczyk, G.; Broslawski, A.; Gosk, M.; Korolczuk, S.; Zychor, I. [Narodowe Centrum Badan Jadrowych (NCBJ), Otwock-Swierk (Poland); Kiptily, V. [Culham Centre for Fusion Energy, Culham (United Kingdom); Mazzocco, M.; Strano, E. [Dipartimento di Fisica, Istituto Nazionale di Fisica Nucleare, Padova (Italy); Collaboration: EUROfusion Consortium, JET, Culham Science Centre, Abingdon (United Kingdom)

    2016-11-15

    Gamma-ray spectroscopy measurements at MHz counting rates have been carried out, for the first time, with a compact spectrometer based on a LaBr{sub 3} scintillator and silicon photomultipliers. The instrument, which is also insensitive to magnetic fields, has been developed in view of the upgrade of the gamma-ray camera diagnostic for α particle measurements in deuterium-tritium plasmas of the Joint European Torus. Spectra were measured up to 2.9 MHz with a projected energy resolution of 3%-4% in the 3-5 MeV range, of interest for fast ion physics studies in fusion plasmas. The results reported here pave the way to first time measurements of the confined α particle profile in high power plasmas of the next deuterium-tritium campaign at the Joint European Torus.

  6. Gamma-ray spectroscopy at MHz counting rates with a compact LaBr3 detector and silicon photomultipliers for fusion plasma applications.

    Science.gov (United States)

    Nocente, M; Rigamonti, D; Perseo, V; Tardocchi, M; Boltruczyk, G; Broslawski, A; Cremona, A; Croci, G; Gosk, M; Kiptily, V; Korolczuk, S; Mazzocco, M; Muraro, A; Strano, E; Zychor, I; Gorini, G

    2016-11-01

    Gamma-ray spectroscopy measurements at MHz counting rates have been carried out, for the first time, with a compact spectrometer based on a LaBr3 scintillator and silicon photomultipliers. The instrument, which is also insensitive to magnetic fields, has been developed in view of the upgrade of the gamma-ray camera diagnostic for α particle measurements in deuterium-tritium plasmas of the Joint European Torus. Spectra were measured up to 2.9 MHz with a projected energy resolution of 3%-4% in the 3-5 MeV range, of interest for fast ion physics studies in fusion plasmas. The results reported here pave the way to first time measurements of the confined α particle profile in high power plasmas of the next deuterium-tritium campaign at the Joint European Torus.

  7. Gamma-ray spectroscopy at MHz counting rates with a compact LaBr3 detector and silicon photomultipliers for fusion plasma applications

    Science.gov (United States)

    Nocente, M.; Rigamonti, D.; Perseo, V.; Tardocchi, M.; Boltruczyk, G.; Broslawski, A.; Cremona, A.; Croci, G.; Gosk, M.; Kiptily, V.; Korolczuk, S.; Mazzocco, M.; Muraro, A.; Strano, E.; Zychor, I.; Gorini, G.

    2016-11-01

    Gamma-ray spectroscopy measurements at MHz counting rates have been carried out, for the first time, with a compact spectrometer based on a LaBr3 scintillator and silicon photomultipliers. The instrument, which is also insensitive to magnetic fields, has been developed in view of the upgrade of the gamma-ray camera diagnostic for α particle measurements in deuterium-tritium plasmas of the Joint European Torus. Spectra were measured up to 2.9 MHz with a projected energy resolution of 3%-4% in the 3-5 MeV range, of interest for fast ion physics studies in fusion plasmas. The results reported here pave the way to first time measurements of the confined α particle profile in high power plasmas of the next deuterium-tritium campaign at the Joint European Torus.

  8. Scalable Performance Measurement and Analysis

    Energy Technology Data Exchange (ETDEWEB)

    Gamblin, Todd [Univ. of North Carolina, Chapel Hill, NC (United States)

    2009-01-01

    Concurrency levels in large-scale, distributed-memory supercomputers are rising exponentially. Modern machines may contain 100,000 or more microprocessor cores, and the largest of these, IBM's Blue Gene/L, contains over 200,000 cores. Future systems are expected to support millions of concurrent tasks. In this dissertation, we focus on efficient techniques for measuring and analyzing the performance of applications running on very large parallel machines. Tuning the performance of large-scale applications can be a subtle and time-consuming task because application developers must measure and interpret data from many independent processes. While the volume of the raw data scales linearly with the number of tasks in the running system, the number of tasks is growing exponentially, and data for even small systems quickly becomes unmanageable. Transporting performance data from so many processes over a network can perturb application performance and make measurements inaccurate, and storing such data would require a prohibitive amount of space. Moreover, even if it were stored, analyzing the data would be extremely time-consuming. In this dissertation, we present novel methods for reducing performance data volume. The first draws on multi-scale wavelet techniques from signal processing to compress systemwide, time-varying load-balance data. The second uses statistical sampling to select a small subset of running processes to generate low-volume traces. A third approach combines sampling and wavelet compression to stratify performance data adaptively at run-time and to reduce further the cost of sampled tracing. We have integrated these approaches into Libra, a toolset for scalable load-balance analysis. We present Libra and show how it can be used to analyze data from large scientific applications scalably.

  9. Measuring performance at trade shows

    DEFF Research Database (Denmark)

    Hansen, Kåre

    2004-01-01

    Trade shows is an increasingly important marketing activity to many companies, but current measures of trade show performance do not adequately capture dimensions important to exhibitors. Based on the marketing literature's outcome and behavior-based control system taxonomy, a model is built...... that captures a outcome-based sales dimension and four behavior-based dimensions (i.e. information-gathering, relationship building, image building, and motivation activities). A 16-item instrument is developed for assessing exhibitors perceptions of their trade show performance. The paper presents evidence...

  10. From performance measurement to learning

    DEFF Research Database (Denmark)

    Lewis, Jenny; Triantafillou, Peter

    2012-01-01

    overload. We conclude with some comments on limiting the undesirable consequences of such a move. Points for practitioners Public administrators need to identify and weigh the (human, political and economic) benefits and costs of accountability regimes. While output-focused performance measurement regimes......Over the last few decades accountability has accommodated an increasing number of different political, legal and administrative goals. This article focuses on the administrative aspect of accountability and explores the potential perils of a shift from performance measurement to learning. While...... to comply with accountability requirements, because of the first point. Third, the costs of compliance are likely to increase because learning requires more participation and dialogue. Fourth, accountability as learning may generate a ‘change for the sake of change’ mentality, creating further government...

  11. Team and Collective Performance Measurement

    Science.gov (United States)

    2007-07-01

    missions with specific as well as general questions. Relationships between the indices have been analyzed by means of structural equation modeling [21... equation modeling with the SIMPLIS command language’. Hillsdale: Lawrence Erlbaum Associates. 1993. [17] Berggren, P. (2000). ‘Situational awareness...2004. TEAM AND COLLECTIVE PERFORMANCE MEASUREMENT RTO-TR-HFM-121-Part-II 7 - 15 [16] Jöreskog, K.G. and Sörbom, D. ‘LISREL8: Structural

  12. Photovoltaic measurements and performance branch

    Science.gov (United States)

    Asher, S. E.; Dippo, P.

    1990-05-01

    The Photovoltaic (PV) Measurements and Performance Branch of the Solar Energy Research Institute (SERI) provides comprehensive PV materials, device and component characterization, measurement, fabrication, and modeling research and support for the international PV research community in the context of the U.S. Department of Energy's PV m goals. The progress of the Branch is summarized. The seven technical sections present a succinct overview of the capabilities and accomplishments of each group in the Branch. The Branch is comprised of the following groups; Surface and Interface Analysis, Materials Characterization, Device Development, Electro-Optical Characterization, Cell Performance, Advanced Module Testing and Performance, and Surface and Interface Modification and Stability. The main research projects completed in FY 1989 are highlighted including measurements and tests of PV materials, cells, submodules and modules. The report contains a comprehensive bibliography of the more than 80 branch-originated journal and conference publications which were authored in collaboration with, or in support of, approximately 130 university, industrial, government, and in-house research groups.

  13. Opcode counting for performance measurement

    Energy Technology Data Exchange (ETDEWEB)

    Gara, Alan; Satterfield, David L.; Walkup, Robert E.

    2016-10-18

    Methods, systems and computer program products are disclosed for measuring a performance of a program running on a processing unit of a processing system. In one embodiment, the method comprises informing a logic unit of each instruction in the program that is executed by the processing unit, assigning a weight to each instruction, assigning the instructions to a plurality of groups, and analyzing the plurality of groups to measure one or more metrics. In one embodiment, each instruction includes an operating code portion, and the assigning includes assigning the instructions to the groups based on the operating code portions of the instructions. In an embodiment, each type of instruction is assigned to a respective one of the plurality of groups. These groups may be combined into a plurality of sets of the groups.

  14. Opcode counting for performance measurement

    Energy Technology Data Exchange (ETDEWEB)

    Gara, Alan; Satterfield, David L.; Walkup, Robert E.

    2015-08-11

    Methods, systems and computer program products are disclosed for measuring a performance of a program running on a processing unit of a processing system. In one embodiment, the method comprises informing a logic unit of each instruction in the program that is executed by the processing unit, assigning a weight to each instruction, assigning the instructions to a plurality of groups, and analyzing the plurality of groups to measure one or more metrics. In one embodiment, each instruction includes an operating code portion, and the assigning includes assigning the instructions to the groups based on the operating code portions of the instructions. In an embodiment, each type of instruction is assigned to a respective one of the plurality of groups. These groups may be combined into a plurality of sets of the groups.

  15. Count rate studies of a box-shaped PET breast imaging system comprised of position sensitive avalanche photodiodes utilizing monte carlo simulation.

    Science.gov (United States)

    Foudray, Angela M K; Habte, Frezghi; Chinn, Garry; Zhang, Jin; Levin, Craig S

    2006-01-01

    We are investigating a high-sensitivity, high-resolution positron emission tomography (PET) system for clinical use in the detection, diagnosis and staging of breast cancer. Using conventional figures of merit, design parameters were evaluated for count rate performance, module dead time, and construction complexity. The detector system modeled comprises extremely thin position-sensitive avalanche photodiodes coupled to lutetium oxy-orthosilicate scintillation crystals. Previous investigations of detector geometries with Monte Carlo indicated that one of the largest impacts on sensitivity is local scintillation crystal density when considering systems having the same average scintillation crystal densities (same crystal packing fraction and system solid-angle coverage). Our results show the system has very good scatter and randoms rejection at clinical activity ranges ( approximately 200 muCi).

  16. Performance testing of radiobioassay laboratories: In vitro measurements (urinalysis): Final report

    Energy Technology Data Exchange (ETDEWEB)

    MacLellan, J.A.; Traub, R.J.; Fisher, D.R.

    1988-03-01

    This report provides results of the two-round nationwide in vitro bioassay intercomparison study. Conclusions were based on analyses by 35 bioassay laboratories of nearly 1400 artificial urine samples containing known quantities of radionuclides. The test radionuclides were H, /sup 89/Sr, /sup 238/Pu, /sup 241/Am, /sup 137/Cs, /sup 60/Co, and natural uranium. The data reported included background count rates, total samples counts, counting times, counting efficiencies, sample yields, and estimated errrors of the determinations. The measurement data were evaluated according to statistical methods presented in the November 1985 version of the draft ANSI Standard N13.30. If a laboratory failed a performance test for any one of the three criteria, the laboratory was considered to have failed the test for that category. 22 refs., 18 figs., 14 tabs

  17. Investigation of Detector Behaviour At High Count Rates for the Purple Crow Lidar

    Science.gov (United States)

    Sica, R. J.; McCullough, E. M.; Jalali, A.; Hartery, S.; Farhani, G.; Argall, P.; Argall, S.

    2013-12-01

    Temperature measurements in the middle and upper atmosphere are an important complement to similar measurements in the lower atmosphere. Even modest size Rayleigh-scatter lidars are capable of high quality measurements of temperature in the stratosphere (above 25 km) and lower mesosphere. The most commonly reported uncertainty, that due to counting statistics, is well understood and affects temperatures at the greatest heights (i.e. lowest signal rates). Counting statistics have a lesser effect on temperatures at the lower range of measurements, where the photocount rate is larger. However, if a lidar's dynamic range is increased by combining analog and digital counting profiles into a 'glued' profile, the gluing introduces a systematic uncertainty. In this presentation we will show the effect of the uncertainty due to gluing on our temperature measurements. The Purple Crow Lidar (PCL), located at the The University of Western Ontario's Echo Base Field Station near London, Canada, has undergone considerable modifications to its transmitter (now a Litron Nd:YAG laser outputting 1 J/pulse at 532 nm with a repetition rate of 30 Hz) as well as to its data acquisition system. The PCL has retained its 2.6 m diameter liquid mercury mirror, giving the system a large power-aperture product. Such a large throughput requires simultaneous analog-digital detection to obtain Rayleigh-scatter temperatures from 25 to above 100 km. The analog and digital profiles must be combined into a single continuous profile, a process called gluing. Several excellent methods for gluing profiles have been presented, but prior to now systematic uncertainties due to the procedure have not been quantified. We will present a detailed characterization of the analog and digital counting channels, using a variety of tests which will show the effect of the gluing procedure on the retrieved temperature.

  18. Improved count rate corrections for highest data quality with PILATUS detectors.

    Science.gov (United States)

    Trueb, P; Sobott, B A; Schnyder, R; Loeliger, T; Schneebeli, M; Kobas, M; Rassool, R P; Peake, D J; Broennimann, C

    2012-05-01

    The PILATUS detector system is widely used for X-ray experiments at third-generation synchrotrons. It is based on a hybrid technology combining a pixelated silicon sensor with a CMOS readout chip. Its single-photon-counting capability ensures precise and noise-free measurements. The counting mechanism introduces a short dead-time after each hit, which becomes significant for rates above 10(6) photons s(-1) pixel(-1). The resulting loss in the number of counted photons is corrected for by applying corresponding rate correction factors. This article presents the results of a Monte Carlo simulation which computes the correction factors taking into account the detector settings as well as the time structure of the X-ray beam at the synchrotron. The results of the simulation show good agreement with experimentally determined correction factors for various detector settings at different synchrotrons. The application of accurate rate correction factors improves the X-ray data quality acquired at high photon fluxes. Furthermore, it is shown that the use of fast detector settings in combination with an optimized time structure of the X-ray beam allows for measurements up to rates of 10(7) photons s(-1) pixel(-1).

  19. Simulating the Counting Mechanism of PILATUS2 and PILATUS3 Detectors for Improved Count Rate Corrections

    Science.gov (United States)

    Trueb, P.; Sobott, B. A.; Schnyder, R.; Loeliger, T.; Schneebeli, M.; Kobas, M.; Rassool, R. P.; Peake, D. J.; Broennimann, C.

    2013-03-01

    PILATUS systems are well established as X-ray detectors at most synchrotrons. Their single photon counting capability ensures precise measurements, but introduces a short dead time after each hit, which becomes significant for photon rates above a million per second and pixel. The resulting loss in the number of counted photons can be corrected for by applying corresponding rate correction factors. This article presents a Monte-Carlo simulation, which computes the correction factors taking into account the detector settings as well as the time structure of the X-ray beam at the synchrotron. For the PILATUS2 detector series the simulation shows good agreement with experimentally determined correction factors for various detector settings at different synchrotrons. The application of more accurate rate correction factors will improve the X-ray data quality at high photon fluxes. Furthermore we report on the simulation of the rate correction factors for the new PILATUS3 systems. The successor of the PILATUS2 detector avoids the paralysation of the counter, and allows for measurements up to a rate of ten million photons per second and pixel. For fast detector settings the simulation is capable of reproducing the data within one to two percent at an incoming photon rate of one million per second and pixel.

  20. Wynkoop Building Performance Measurement: Water

    Energy Technology Data Exchange (ETDEWEB)

    Fowler, Kimberly M.; Kora, Angela R.

    2012-08-26

    This report is a summary of the water analysis performance for the Denver, Colorado Wynkoop Building. The Wynkoop Building (Figure 1) was built in 2006 as the Environmental Protection Agency (EPA) Region 8 Headquarters intended to house over 900 occupants in the 301,292 gross square feet (248,849 rentable square feet). The building was built on a brownfield in the Lower Downtown Historic District as part of an urban redevelopment effort. The building was designed and constructed through a public-private partnership with the sustainable design elements developed jointly by General Services Administration (GSA) and EPA. That partnership is still active with all parties still engaged to optimize building operations and use the building as a Learning Laboratory. The building design achieved U.S. Green Building Council Leadership in Energy and Environmental Design for New Construction (LEED-NC) Gold Certification in 2008 (Figure 2) and a 2008 EPA Energy Star Rating of 96 with design highlights that include: (1) Water use was designed to use 40% less than a typical design baseline. The design included low flow fixtures, waterless urinals and dual flush toilets; (2) Native and adaptive vegetation were selected to minimize the need for irrigation water for landscaping; and (3) Energy use intensity was modeled at 66.1 kBtus/gross square foot, which is 39% better than ASHRAE 90.1 1999. The Wynkoop Building water use (10 gallons/square foot) was measured at lower than industry average (15 gallons/square foot) and GSA goals (13 gallons/square foot), however, it was higher than building management expected it would be. The type of occupants and number of occupants can have a significant impact on fixture water use. The occupancy per floor varied significantly over the study time period, which added uncertainty to the data analysis. Investigation of the fixture use on the 2nd, 5th, and 7th floors identified potential for water use reduction if the flush direction of the dual

  1. 20 CFR 638.302 - Performance measurement.

    Science.gov (United States)

    2010-04-01

    ... 20 Employees' Benefits 3 2010-04-01 2010-04-01 false Performance measurement. 638.302 Section 638... § 638.302 Performance measurement. The Job Corps Director shall establish a national performance measurement system for centers and other program components which shall include annual performance standards....

  2. Accounting System and Financial Performance Measurements

    OpenAIRE

    Halíř, Zbyněk

    2011-01-01

    The paper concerns measuring and reporting of financial performance of an enterprise. Currently increasing emphasis is placed on performance measurement and management. Within performance measurement and management in general the role of financial performance is becoming increasingly important. The paper is concerned with measuring and reporting of financial performance of an enterprise primarily from manager’s point of view. In its first part it deals primarily with the connection between th...

  3. Free-running InGaAs single photon detector with 1 cps dark count rate at 10% efficiency

    CERN Document Server

    Korzh, Boris; Lunghi, Tommaso; Gisin, Nicolas; Zbinden, Hugo

    2013-01-01

    We present a free-running single photon detector for telecom wavelengths based on a negative feedback avalanche photodiode (NFAD). A dark count rate as low as 1 cps was obtained at a detection efficiency of 10%, with an afterpulse probability of 2.2% for 20 {\\mu}s of deadtime. This was achieved by using an active hold-off circuit and cooling the NFAD with a free-piston stirling cooler down to temperatures of -110${^o}$C. We integrated two detectors into a practical, 625 MHz clocked quantum key distribution system. Stable, real-time key distribution in presence of 30 dB channel loss was possible, yielding a secret key rate of 350 bps.

  4. Performance Measurement of AMTEC Electrode

    Institute of Scientific and Technical Information of China (English)

    MA; Jun-ping; HE; Hu; LI; Si-jie; TANG; Xian; LUO; Zhi-fu

    2015-01-01

    Alkali metal thermal to electric converter(AMTEC)is a direct energy conversion device capable of near-Carnot efficiencies,and has demonstrated the performance of high power density,high current low voltage.Electrode is a key component of achieving high efficiency in an AMTEC device.A RhW alloy target was used for deposition

  5. PRINCIPLES OF THE SUPPLY CHAIN PERFORMANCE MEASUREMENT

    OpenAIRE

    BEATA ŒLUSARCZYK; SEBASTIAN KOT

    2012-01-01

    Measurement of performance in every business management is a crucial activity allowing for effectiveness increase. The lack of suitable performance measurement is especially noticed in complex systems as supply chains. Responsible persons cannot manage effectively without suitable set of measures those are base for comparison to previous data or effects of other supply chain functioning. The analysis shows that it is very hard to find balanced set of supply chain performance measures those sh...

  6. Performance Measurement and Performance Information in New Democracies

    NARCIS (Netherlands)

    K. Nõmm (Külli); T. Randma-Liiv (Tiina)

    2012-01-01

    markdownabstract__Abstract__ This article explores the introduction of performance measurement tools in new democracies by presenting a qualitative study based on Estonian governmental documents and performance audits. A set of specific factors help to explain difficulties in introducing performan

  7. Measured energy performance of greenroofs

    Energy Technology Data Exchange (ETDEWEB)

    Bell, H. [Sulzer Pumps, Portland, OR (United States); Spolek, G. [Portland State Univ., OR (United States)

    2009-07-01

    In this study, a wind tunnel was used to simulate the exposure of extensive green roofs to varying temperature rates. The aim of the study was to calculate an effective R-value under steady state conditions. Heat transfer through the green roof into the building beneath was measured. Results of the study showed that hotter air temperatures inhibited rooftop heat transfer. Larger-leafed plants with higher transpiration rates delivered higher R-values than low water use plants such as sedums. R-values for green roofs covered with periwinkle, clover, and rye grass were all significantly higher than values observed for bare soil roofs in comparable conditions. Effective R-values were reduced when soil moisture was increased beyond the necessary transpiration requirements of the plants. The laboratory studies indicated that green roofs can be designed to maximize effective R-values. R-values can be increased by up to 50 per cent when appropriate irrigation is supplied to plants with high transpiration rates. 13 refs., 2 tabs., 6 figs.

  8. Comparison of Monte Carlo simulated and measured performance parameters of miniPET scanner

    Science.gov (United States)

    Kis, S. A.; Emri, M.; Opposits, G.; Bükki, T.; Valastyán, I.; Hegyesi, Gy.; Imrek, J.; Kalinka, G.; Molnár, J.; Novák, D.; Végh, J.; Kerek, A.; Trón, L.; Balkay, L.

    2007-02-01

    In vivo imaging of small laboratory animals is a valuable tool in the development of new drugs. For this purpose, miniPET, an easy to scale modular small animal PET camera has been developed at our institutes. The system has four modules, which makes it possible to rotate the whole detector system around the axis of the field of view. Data collection and image reconstruction are performed using a data acquisition (DAQ) module with Ethernet communication facility and a computer cluster of commercial PCs. Performance tests were carried out to determine system parameters, such as energy resolution, sensitivity and noise equivalent count rate. A modified GEANT4-based GATE Monte Carlo software package was used to simulate PET data analogous to those of the performance measurements. GATE was run on a Linux cluster of 10 processors (64 bit, Xeon with 3.0 GHz) and controlled by a SUN grid engine. The application of this special computer cluster reduced the time necessary for the simulations by an order of magnitude. The simulated energy spectra, maximum rate of true coincidences and sensitivity of the camera were in good agreement with the measured parameters.

  9. The service of public services performance measurement

    DEFF Research Database (Denmark)

    Lystbæk, Christian Tang

    2014-01-01

    that performance measurement serves as “rituals of verification” which promotes the interests of political masters and their mistresses rather than public service. Another area of concern is the cost of performance measurement. Hood & Peters (2004:278) note that performance measurement is likely to “distract...... the actual impact, the costs and unintended consequences associated with performance measurement. This paper identifies the main rationales and rationalities in the scholarly discourse on public services performance measurement. It concludes with some suggestions on how to deal with the many rationales......Nowadays, states spend more attention, time and money on performance measurement and evaluation in the public sector than ever before (OECD, 1996; Power, 1997; van Thiel et al., 2002). Result-based management is the talk of the day at all levels of the public sector; at local, regional, national...

  10. Select21 Soldier Job Performance Measurement Tools

    Science.gov (United States)

    2005-08-01

    with 18 to 36 months time in service and, at the same time, assess the Soldiers’ job performance by using specially designed indicators, called...criterion measures. This report describes the criterion measures that will be used to measure the job performance and organizational "fit" of Soldiers...tests to determine how well the pre-enlistment tests might forecast future job performance . The main purpose of this report is to acquaint Army readers

  11. COMPANY PERFORMANCE MEASUREMENT AND REPORTING METHODS

    Directory of Open Access Journals (Sweden)

    Nicu Ioana Elena

    2012-12-01

    Full Text Available One of the priorities of economic research has been and remains the re-evaluation of the notion of performance and especially exploring and finding some indicators that would reflect as accurately as possible the subtleties of the economic entity. The main purpose of this paper is to highlight the main company performance measurement and reporting methods. Performance is a concept that raises many question marks concerning the most accurate or the best method of reporting the performance at the company level. The research methodology has aimed at studying the Romanian and foreign specialized literature dealing with the analyzed field, studying magazines specialized on company performance measurement. If the financial performance measurement indicators are considered to offer an accurate image of the situation of the company, the modern approach through non-financial indicators offers a new perspective upon performance measurement, which is based on simplicity. In conclusion, after the theoretical study, I have noticed that the methods of performance measurement, reporting and interpretation are various, the opinions regarding the best performance measurement methods are contradictive and the companies prefer resorting to financial indicators that still play a more important role in the consolidation of the company performance measurement than the non-financial indicators do.

  12. Electro-optical imaging system performance measurement

    NARCIS (Netherlands)

    Bijl, P.; Toet, A.; Valeton, J.M.

    2003-01-01

    The minimum resolvable temperature difference (MRTD), the minimum resolvable contrast (MRC), and the triangle orientation discrimination (TOD) are end-to-end EO system performance measures; that is, laboratory measures that characterize EO system performance with a human observer in the loop. Such s

  13. An Ethnostatistical Analysis of Performance Measurement

    Science.gov (United States)

    Winiecki, Donald J.

    2008-01-01

    Within the fields of human performance technology (HPT), human resources management (HRM), and management in general, performance measurement is not only foundational but considered necessary at all phases in the process of HPT. In HPT in particular, there is substantial advice literature on what measurement is, why it is essential, and (at a…

  14. A Critique of Health System Performance Measurement.

    Science.gov (United States)

    Lynch, Thomas

    2015-01-01

    Health system performance measurement is a ubiquitous phenomenon. Many authors have identified multiple methodological and substantive problems with performance measurement practices. Despite the validity of these criticisms and their cross-national character, the practice of health system performance measurement persists. Theodore Marmor suggests that performance measurement invokes an "incantatory response" wrapped within "linguistic muddle." In this article, I expand upon Marmor's insights using Pierre Bourdieu's theoretical framework to suggest that, far from an aberration, the "linguistic muddle" identified by Marmor is an indicator of a broad struggle about the representation and classification of public health services as a public good. I present a case study of performance measurement from Alberta, Canada, examining how this representational struggle occurs and what the stakes are.

  15. Does hospital financial performance measure up?

    Science.gov (United States)

    Cleverley, W O; Harvey, R K

    1992-05-01

    Comparisons are continuously being made between the financial performance, products and services, of the healthcare industry and those of non-healthcare industries. Several useful measures of financial performance--profitability, liquidity, financial risk, asset management and replacement, and debt capacity, are used by the authors to compare the financial performance of the hospital industry with that of the industrial, transportation and utility sectors. Hospitals exhibit weaknesses in several areas. Goals are suggested for each measure to bring hospitals closer to competitive levels.

  16. A returns based approach to performance measurement

    OpenAIRE

    Casselman, Graham Andrew

    2005-01-01

    This paper applies the performance measurement technique first developed by Sharpe (1992) to a selected pool of Canadian investment funds. Sharpe's technique differed from traditional performance measurement methods in two areas. The first being that Sharpe's method included distinct investing styles as asset classes, resulting in an expanded the asset class universe. The second being his method of method of measuring asset class exposures. With a constrained regression equation, Sharpe was a...

  17. Visual Object Tracking Performance Measures Revisited.

    Science.gov (United States)

    Čehovin, Luka; Leonardis, Aleš; Kristan, Matej

    2016-03-01

    The problem of visual tracking evaluation is sporting a large variety of performance measures, and largely suffers from lack of consensus about which measures should be used in experiments. This makes the cross-paper tracker comparison difficult. Furthermore, as some measures may be less effective than others, the tracking results may be skewed or biased toward particular tracking aspects. In this paper, we revisit the popular performance measures and tracker performance visualizations and analyze them theoretically and experimentally. We show that several measures are equivalent from the point of information they provide for tracker comparison and, crucially, that some are more brittle than the others. Based on our analysis, we narrow down the set of potential measures to only two complementary ones, describing accuracy and robustness, thus pushing toward homogenization of the tracker evaluation methodology. These two measures can be intuitively interpreted and visualized and have been employed by the recent visual object tracking challenges as the foundation for the evaluation methodology.

  18. Development of a Behavioral Performance Measure

    Directory of Open Access Journals (Sweden)

    Marcelo Cabus Klotzle

    2012-09-01

    Full Text Available Since the fifties, several measures have been developed in order to measure the performance of investments or choices involving uncertain outcomes. Much of these measures are based on Expected Utility Theory, but since the nineties a number of measures have been proposed based on Non-Expected Utility Theory. Among the Theories of Non-Expected Utility highlights Prospect Theory, which is the foundation of Behavioral Finance. Based on this theory this study proposes a new performance measure in which are embedded loss aversion along with the likelihood of distortions in the choice of alternatives. A hypothetical example is presented in which various performance measures, including the new measure are compared. The results showed that the ordering of the assets varied depending on the performance measure adopted. According to what was expected, the new performance measure clearly has captured the distortion of probabilities and loss aversion of the decision maker, ie, those assets with the greatest negative deviations from the target were those who had the worst performance.

  19. MEASUREMENT: ACCOUNTING FOR RELIABILITY IN PERFORMANCE ESTIMATES.

    Science.gov (United States)

    Waterman, Brian; Sutter, Robert; Burroughs, Thomas; Dunagan, W Claiborne

    2014-01-01

    When evaluating physician performance measures, physician leaders are faced with the quandary of determining whether departures from expected physician performance measurements represent a true signal or random error. This uncertainty impedes the physician leader's ability and confidence to take appropriate performance improvement actions based on physician performance measurements. Incorporating reliability adjustment into physician performance measurement is a valuable way of reducing the impact of random error in the measurements, such as those caused by small sample sizes. Consequently, the physician executive has more confidence that the results represent true performance and is positioned to make better physician performance improvement decisions. Applying reliability adjustment to physician-level performance data is relatively new. As others have noted previously, it's important to keep in mind that reliability adjustment adds significant complexity to the production, interpretation and utilization of results. Furthermore, the methods explored in this case study only scratch the surface of the range of available Bayesian methods that can be used for reliability adjustment; further study is needed to test and compare these methods in practice and to examine important extensions for handling specialty-specific concerns (e.g., average case volumes, which have been shown to be important in cardiac surgery outcomes). Moreover, it's important to note that the provider group average as a basis for shrinkage is one of several possible choices that could be employed in practice and deserves further exploration in future research. With these caveats, our results demonstrate that incorporating reliability adjustment into physician performance measurements is feasible and can notably reduce the incidence of "real" signals relative to what one would expect to see using more traditional approaches. A physician leader who is interested in catalyzing performance improvement

  20. Performance Measurement in Global Product Development

    DEFF Research Database (Denmark)

    Taylor, Thomas Paul; Ahmed-Kristensen, Saeema

    2013-01-01

    performance is measured has focussed on the process of product development. However, exploration of performance measurement related to global product development is relatively unexplored and a need for further research is evident. This paper contributes towards understanding how performance is measured...... in global product development. More specifically, results from a survey and interviews highlight a need for further development in current performance measurement frameworks used in product development to facilitate the key factors and metrics in global product development.......An organisation looking to form collaborations across borders is a consequence of an increasingly competitive world market. Recent studies highlighted key challenges and success factors organisation’s face when globalising stages of product development. To optimize performance along these factors...

  1. Wind tunnel measurements of windscreen performance

    Science.gov (United States)

    Maniet, Edward R.

    2002-05-01

    Microphone windscreens are routinely used in outdoor acoustic measurements to reduce wind noise pickup. Characterization of windscreen performance outdoors with real wind has several drawbacks notably that the test conditions cannot be controlled. Test methodology has been developed that provides controlled, repeatable measurements of microphone windscreen performance in a laboratory setting. Wind noise measurements are performed using a high-speed/laminar-flow, low-noise wind tunnel that incorporates a large anechoic chamber. The wind tunnel is modified to produce a turbulent flow into which the microphone and windscreen under evaluation are placed. The turbulent velocity spectrum is measured using multi-axis hot-wire anemometers and compared to outdoor data to locate the best position in the turbulent flow to place the test article. Comparative performance measurements of several windscreen designs are presented.

  2. Phase space representation of neutron monitor count rate and atmospheric electric field in relation to solar activity in cycles 21 and 22.

    Science.gov (United States)

    Silva, H G; Lopes, I

    Heliospheric modulation of galactic cosmic rays links solar cycle activity with neutron monitor count rate on earth. A less direct relation holds between neutron monitor count rate and atmospheric electric field because different atmospheric processes, including fluctuations in the ionosphere, are involved. Although a full quantitative model is still lacking, this link is supported by solid statistical evidence. Thus, a connection between the solar cycle activity and atmospheric electric field is expected. To gain a deeper insight into these relations, sunspot area (NOAA, USA), neutron monitor count rate (Climax, Colorado, USA), and atmospheric electric field (Lisbon, Portugal) are presented here in a phase space representation. The period considered covers two solar cycles (21, 22) and extends from 1978 to 1990. Two solar maxima were observed in this dataset, one in 1979 and another in 1989, as well as one solar minimum in 1986. Two main observations of the present study were: (1) similar short-term topological features of the phase space representations of the three variables, (2) a long-term phase space radius synchronization between the solar cycle activity, neutron monitor count rate, and potential gradient (confirmed by absolute correlation values above ~0.8). Finally, the methodology proposed here can be used for obtaining the relations between other atmospheric parameters (e.g., solar radiation) and solar cycle activity.

  3. Introduction to control system performance measurements

    CERN Document Server

    Garner, K C

    1968-01-01

    Introduction to Control System Performance Measurements presents the methods of dynamic measurements, specifically as they apply to control system and component testing. This book provides an introduction to the concepts of statistical measurement methods.Organized into nine chapters, this book begins with an overview of the applications of automatic control systems that pervade almost every area of activity ranging from servomechanisms to electrical power distribution networks. This text then discusses the common measurement transducer functions. Other chapters consider the basic wave

  4. Internal Performance Measurement Systems: Problems and Solutions

    DEFF Research Database (Denmark)

    Jakobsen, Morten; Mitchell, Falconer; Nørreklit, Hanne

    2010-01-01

    . The analysis uses and extends N rreklit's (2000) critique of the BSC by applying the concepts developed therein to contemporary research on the BSC and to the development of practice in performance measurement. The analysis is of relevance for many companies in the Asia-Pacific area as an increasing numbers......This article pursues two aims: to identify problems and dangers related to the operational use of internal performance measurement systems of the Balanced Scorecard (BSC) type and to provide some guidance on how performance measurement systems may be designed to overcome these problems...

  5. Testing for Distortions in Performance Measures

    DEFF Research Database (Denmark)

    Sloof, Randolph; Van Praag, Mirjam

    Distorted performance measures in compensation contracts elicit suboptimal behavioral responses that may even prove to be dysfunctional (gaming). This paper applies the empirical test developed by Courty and Marschke (2008) to detect whether the widely used class of Residual Income based...... performance measures —such as Economic Value Added (EVA)— is distorted, leading to unintended agent behavior. The paper uses a difference-in-differences approach to account for changes in economic circumstances and the self-selection of firms using EVA. Our findings indicate that EVA is a distorted...... performance measure that elicits the gaming response....

  6. Testing for Distortions in Performance Measures

    DEFF Research Database (Denmark)

    Sloof, Randolph; Van Praag, Mirjam

    2015-01-01

    used class of residual income-based performance measures-such as economic value added (EVA)-is distorted, leading to unintended agent behavior. The paper uses a difference-in-differences approach to account for changes in economic circumstances and the self-selection of firms using EVA. Our findings......Distorted performance measures in compensation contracts elicit suboptimal behavioral responses that may even prove to be dysfunctional (gaming). This paper applies the empirical test developed by Courty and Marschke (Review of Economics and Statistics, 90, 428-441) to detect whether the widely...... indicate that EVA is a distorted performance measure that elicits the gaming response....

  7. The service of public services performance measurement

    DEFF Research Database (Denmark)

    Lystbæk, Christian Tang

    2014-01-01

    Nowadays, states spend more attention, time and money on performance measurement and evaluation in the public sector than ever before (OECD, 1996; Power, 1997; van Thiel et al., 2002). Result-based management is the talk of the day at all levels of the public sector; at local, regional, national...... explosion” and “the audit society” to describe this development.  Some criticize this development. Thus, a number of critiques which suggest that public service performance measurement may in fact have no significant impact or even lead to negative effects on performance. Powers (1997, 2003) have argued...... middle- and upper-level officials, create massive paperwork, and produce major unintended effects.” Critics also argue that performance measures stifles innovation by rewarding conformity rather than risk-taking (fx. van Thiel et al., 2002). Thus, the scholarly discourse on public services performance...

  8. Measures of Searcher Performance: A Psychometric Evaluation.

    Science.gov (United States)

    Wildemuth, Barbara M.; And Others

    1993-01-01

    Describes a study of medical students that was conducted to evaluate measures of performance on factual searches of INQUIRER, a full-text database in microbiology. Measures relating to recall, precision, search term overlap, and efficiency are discussed; reliability and construct validity are considered; and implications for future research are…

  9. Measuring performance in virtual reality phacoemulsification surgery

    Science.gov (United States)

    Söderberg, Per; Laurell, Carl-Gustaf; Simawi, Wamidh; Skarman, Eva; Nordh, Leif; Nordqvist, Per

    2008-02-01

    We have developed a virtual reality (VR) simulator for phacoemulsification surgery. The current work aimed at developing a relative performance index that characterizes the performance of an individual trainee. We recorded measurements of 28 response variables during three iterated surgical sessions in 9 experienced cataract surgeons, separately for the sculpting phase and the evacuation phase of phacoemulsification surgery and compared their outcome to that of a reference group of naive trainees. We defined an individual overall performance index, an individual class specific performance index and an individual variable specific performance index. We found that on an average the experienced surgeons performed at a lower level than a reference group of naive trainees but that this was particularly attributed to a few surgeons. When their overall performance index was further analyzed as class specific performance index and variable specific performance index it was found that the low level performance was attributed to a behavior that is acceptable for an experienced surgeon but not for a naive trainee. It was concluded that relative performance indices should use a reference group that corresponds to the measured individual since the definition of optimal surgery may vary among trainee groups depending on their level of experience.

  10. Measurement Of Shariah Stock Performance Using Risk Adjusted Performance

    Directory of Open Access Journals (Sweden)

    Zuhairan Y Yunan

    2015-03-01

    Full Text Available The aim of this research is to analyze the shariah stock performance using risk adjusted performance method. There are three parameters to measure the stock performance i.e. Sharpe, Treynor, and Jensen. This performance’s measurements calculate the return and risk factor from shariah stocks. The data that used on this research is using the data of stocks at Jakarta Islamic Index. Sampling method that used on this paper is purposive sampling. This research is using ten companies as a sample. The result shows that from three parameters, the stock that have a best performance are AALI, ANTM, ASII, CPIN, INDF, KLBF, LSIP, and UNTR.DOI: 10.15408/aiq.v7i1.1364

  11. Improving competitiveness through performance-measurement systems.

    Science.gov (United States)

    Stewart, L J; Lockamy, A

    2001-12-01

    Parallels exist between the competitive pressures felt by U.S. manufacturers over the past 30 years and those experienced by healthcare providers today. Increasing market deregulation, changing government policies, and growing consumerism have altered the healthcare arena. Responding to similar pressures, manufacturers adopted a strategic orientation driven by customer needs and expectations that led them to achieve high performance levels and surpass their competition. The adoption of integrated performance-measurement systems was instrumental in these firms' success. An integrated performance-measurement model for healthcare organizations can help to blend the organization's strategy with the demands of the contemporary healthcare environment. Performance-measurement systems encourage healthcare organizations to focus on their mission and vision by aligning their strategic objectives and resource-allocation decisions with customer requirements.

  12. The PROOF benchmark suite measuring PROOF performance

    Science.gov (United States)

    Ryu, S.; Ganis, G.

    2012-06-01

    The PROOF benchmark suite is a new utility suite of PROOF to measure performance and scalability. The primary goal of the benchmark suite is to determine optimal configuration parameters for a set of machines to be used as PROOF cluster. The suite measures the performance of the cluster for a set of standard tasks as a function of the number of effective processes. Cluster administrators can use the suite to measure the performance of the cluster and find optimal configuration parameters. PROOF developers can also utilize the suite to help them measure, identify problems and improve their software. In this paper, the new tool is explained in detail and use cases are presented to illustrate the new tool.

  13. MEASURING FINANCIAL PERFORMANCE TYPES OF RESPONSIBILITY CENTERS

    Directory of Open Access Journals (Sweden)

    LOREDANA CIURLĂU

    2012-11-01

    Full Text Available The financial performance of a responsibility center is measured on the basis of specific indicators of the nature center. To obtain a relevant and consistent images relating to the performance of an entity is required to use a system of indicators. Performance indicators of the structure it needs to capture at the same time, at least the following aspects: the objectives of the entity, its strategy, efficacy and effectiveness of activities carried out, the entity's ability to adapt to the requirements of the market in which they operate. Financial indicators of performance are the most objective, because most businesses give important resources for the activities of audit and control.

  14. PERFORMANCE MEASUREMENT IN HIGHER EDUCATION: LITERATURE REVIEW

    Directory of Open Access Journals (Sweden)

    Andreea Ioana COSTE

    2015-06-01

    Full Text Available Significant actions have been taken to define the concept of performance measurement. Many researchers have been discussing and developing this topic. Also, not only in the recent literature are many studies regarding the topic, but now are more than ever. At international level, International Public Sector Accounting Standard Board took the decision to develop a framework for reporting service performance measurement that focuses on meeting the needs of intended users. In this way, around the world, will be a uniform understanding and applicability for performance measurement. This paper analyzes the concept of performance measurement. The main objective of the paper is to do a review of the definitions received by the concept in time, thus a qualitative approach will be used. Furthermore, this paper tries to examine the changes which occurred in public universities due to the budget constraints. Performance measurement plays a central role because, in this way, universities prove their accountability and to show the way in which they have value the money.

  15. Performance Evaluation of Spectroscopic Detectors for LEU Hold-up Measurements

    Energy Technology Data Exchange (ETDEWEB)

    Venkataraman, Ramkumar [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Nutter, Greg [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); McElroy, Robert Dennis [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2016-12-06

    The hold-up measurement of low-enriched uranium materials may require use of alternate detector types relative to the measurement of highly enriched uranium. This is in part due to the difference in process scale (i.e., the components are generally larger for low-enriched uranium systems), but also because the characteristic gamma-ray lines from 235U used for assay of highly enriched uranium will be present at a much reduced intensity (on a per gram of uranium basis) at lower enrichments. Researchers at Oak Ridge National Laboratory examined the performance of several standard detector types, e.g., NaI(Tl), LaBr3(Ce), and HPGe, to select a suitable candidate for measuring and quantifying low-enriched uranium hold-up in process pipes and equipment at the Portsmouth gaseous diffusion plant. Detector characteristics, such as energy resolution (full width at half maximum) and net peak count rates at gamma ray energies spanning a range of 60–1332 keV, were measured for the above-mentioned detector types using the same sources and in the same geometry. Uranium enrichment standards (Certified Reference Material no. 969 and Certified Reference Material no. 146) were measured using each of the detector candidates in the same geometry. The net count rates recorded by each detector at 186 keV and 1,001 keV were plotted as a function of enrichment (atom percentage). Background measurements were made in unshielded and shielded configurations under both ambient and elevated conditions of 238U activity. The highly enriched uranium hold-up measurement campaign at the Portsmouth plant was performed on process equipment that had been cleaned out. Therefore, in most cases, the thickness of the uranium deposits was less than the “infinite thickness” for the 186 keV gamma rays to be completely self-attenuated. Because of this, in addition to measuring the 186 keV gamma, the 1,001 keV gamma ray from 234mPa—a daughter of 238U in secular

  16. Telerobotic system performance measurement: motivation and methods

    Science.gov (United States)

    Kondraske, George V.; Khoury, George J.

    1992-11-01

    Telerobotic systems (TRSs) and shared teleautonomous systems result from the integration of multiple sophisticated modules. Procedures used in systems integration design decision-making of such systems are frequently ad hoc compared to more quantitative and systematic methods employed elsewhere in engineering. Experimental findings associated with verification and validation (V&V) are often application-specific. Furthermore, models and measurement strategies do not exist which allow prediction of overall TRS performance in a given task based on knowledge of the performance characteristics of individual subsystems. This paper introduces the use of general systems performance theory (GSPT), developed by the senior author to help resolve similar problems in human performance, as a basis for: (1) measurement of overall TRS performance (viewing all system components, including the operator, as a single entity); (2) task decomposition; (3) development of a generic TRS model; and (4) the characterization of performance of subsystems comprising the generic model. GSPT uses a resource construct to model performance and resource economic principles to govern the interface of systems to tasks. It provides a comprehensive modeling/measurement strategy applicable to complex systems including both human and artificial components. Application is presented in the context of a distributed telerobotics network (Universities Space Automation and Robotics Consortium) as a testbed. Insight into the design of test protocols which elicit application-independent data (i.e., multi-purpose or reusable) is described. Although the work is motivated by space automation and robotics challenges, it is considered to be applicable to telerobotic systems in general.

  17. Procedure to Measure Indoor Lighting Energy Performance

    Energy Technology Data Exchange (ETDEWEB)

    Deru, M.; Blair, N.; Torcellini, P.

    2005-10-01

    This document provides standard definitions of performance metrics and methods to determine them for the energy performance of building interior lighting systems. It can be used for existing buildings and for proposed buildings. The primary users for whom these documents are intended are building energy analysts and technicians who design, install, and operate data acquisition systems, and who analyze and report building energy performance data. Typical results from the use of this procedure are the monthly and annual energy used for lighting, energy savings from occupancy or daylighting controls, and the percent of the total building energy use that is used by the lighting system. The document is not specifically intended for retrofit applications. However, it does complement Measurement and Verification protocols that do not provide detailed performance metrics or measurement procedures.

  18. Procedure to Measure Indoor Lighting Energy Performance

    Energy Technology Data Exchange (ETDEWEB)

    Deru, M.; Blair, N.; Torcellini, P.

    2005-10-01

    This document provides standard definitions of performance metrics and methods to determine them for the energy performance of building interior lighting systems. It can be used for existing buildings and for proposed buildings. The primary users for whom these documents are intended are building energy analysts and technicians who design, install, and operate data acquisition systems, and who analyze and report building energy performance data. Typical results from the use of this procedure are the monthly and annual energy used for lighting, energy savings from occupancy or daylighting controls, and the percent of the total building energy use that is used by the lighting system. The document is not specifically intended for retrofit applications. However, it does complement Measurement and Verification protocols that do not provide detailed performance metrics or measurement procedures.

  19. MODERN INSTRUMENTS FOR MEASURING ORGANIZATIONAL PERFORMANCE

    OpenAIRE

    RADU CATALINA; BADEA FLORICA; GRIGORE ANA-MARIA

    2010-01-01

    Any significant management action can be assessed both in terms of success of immediate goals and as effect of the organization ability to embrace change. Market competition intensifies with the development of Romanian society and its needs. Companies that offer different products and services need to impose certain advantages and to increase their performances. The paper will present modern tools for measuring and evaluating organizational performance, namely: Balanced Scorecard, Deming mode...

  20. Performance measuring framework for grid market middleware

    OpenAIRE

    Freitag, Fèlix; Chacín Martínez, Pablo; Chao, Isaac; Brunner, René; Navarro Moldes, Leandro; Ardáiz Villanueva, Óscar

    2007-01-01

    Current implementations of Grid infrastructures provide frameworks which aim at achieve on-demand computing. In such a scenario, contribution and use of resources will be governed by business models. The challenge is to provide multi-level performance information which enables the participation of the different actors in such a system. In this paper we describe the performance measuring framework developed for Grid Market Middleware, a middleware which supports economic-model based selection ...

  1. Neutron Monitors and muon detectors for solar modulation studies: Interstellar flux, yield function, and assessment of critical parameters in count rate calculations

    CERN Document Server

    Maurin, D; Derome, L; Ghelfi, A; Hubert, G

    2014-01-01

    Particles count rates at given Earth location and altitude result from the convolution of (i) the interstellar (IS) cosmic-ray fluxes outside the solar cavity, (ii) the time-dependent modulation of IS into Top-of-Atmosphere (TOA) fluxes, (iii) the rigidity cut-off (or geomagnetic transmission function) and grammage at the counter location, (iv) the atmosphere response to incoming TOA cosmic rays (shower development), and (v) the counter response to the various particles/energies in the shower. Count rates from neutron monitors or muon counters are therefore a proxy to solar activity. In this paper, we review all ingredients, discuss how their uncertainties impact count rate calculations, and how they translate into variation/uncertainties on the level of solar modulation $\\phi$ (in the simple Force-Field approximation). The main uncertainty for neutron monitors is related to the yield function. However, many other effects have a significant impact, at the 5-10% level on $\\phi$ values. We find no clear ranking...

  2. Corporate Social Performance: From Output Measurement to Impact Measurement

    NARCIS (Netherlands)

    K.E.H. Maas (Karen)

    2009-01-01

    textabstractAll organisations have social, environmental and economic impacts that effect people, their communities and the natural environment. Impacts include intended as well as unintended effects and negative as well as positive effects. Current practice in performance measurement tends to focus

  3. Corporate Social Performance: From Output Measurement to Impact Measurement

    NARCIS (Netherlands)

    K.E.H. Maas (Karen)

    2009-01-01

    textabstractAll organisations have social, environmental and economic impacts that effect people, their communities and the natural environment. Impacts include intended as well as unintended effects and negative as well as positive effects. Current practice in performance measurement tends to focus

  4. External Innovation Implementation Determinants and Performance Measurement

    DEFF Research Database (Denmark)

    Coates, Matthew; Bals, Lydia

    2013-01-01

    for innovation implementation based on a case study in the pharmaceutical industry. The results of 25 expert interviews and a survey with 67 respondents led to the resulting framework and a corresponding performance measurement system. The results reveal the importance of supporting systems and show differences...

  5. The Validity of Subjective Performance Measures

    DEFF Research Database (Denmark)

    Meier, Kenneth J.; Winter, Søren C.; O'Toole, Laurence J.

    2015-01-01

    to provide, and are highly policy specific rendering generalization difficult. But are perceptual performance measures valid, and do they generate unbiased findings? We examine these questions in a comparative study of middle managers in schools in Texas and Denmark. The findings are remarkably similar...

  6. Strategic Performance Measurement of Research and Development

    DEFF Research Database (Denmark)

    Parisi, Cristiana; Rossi, Paola

    2015-01-01

    The paper used an in depth case study to investigate how firms can integrate the strategic performance measurement of R&D with the Balanced Scorecard. Moreover, the paper investigated the crucial role of controller in the decision making process of this integration.The literature review of R&D ma...

  7. Performance measurement in industrial R&D

    NARCIS (Netherlands)

    Kerssens-van Drongelen, I.C.; Nixon, Bill; Pearson, Alan

    2000-01-01

    Currently, the need for R&D performance measurements that are both practically useful and theoretically sound seems to be generally acknowledged; indeed, the rising cost of R&D, greater emphasis on value management and a trend towards decentralization are escalating the need for ways of evaluating

  8. Demystifying Results-Based Performance Measurement.

    Science.gov (United States)

    Jorjani, Hamid

    Many evaluators are convinced that Results-based Performance Measurement (RBPM) is an effective tool to improve service delivery and cost effectiveness in both public and private sectors. Successful RBPM requires self-directed and cross-functional work teams and the supporting infrastructure to make it work. There are many misconceptions and…

  9. Performance measurement in industrial R&D

    NARCIS (Netherlands)

    Kerssens-van Drongelen, Inge; Nixon, Bill; Pearson, Alan

    2000-01-01

    Currently, the need for R&D performance measurements that are both practically useful and theoretically sound seems to be generally acknowledged; indeed, the rising cost of R&D, greater emphasis on value management and a trend towards decentralization are escalating the need for ways of evaluating t

  10. The five traps of performance measurement.

    Science.gov (United States)

    Likierman, Andrew

    2009-10-01

    Evaluating a company's performance often entails wading through a thicket of numbers produced by a few simple metrics, writes the author, and senior executives leave measurement to those whose specialty is spreadsheets. To take ownership of performance assessment, those executives should find qualitative, forward-looking measures that will help them avoid five common traps: Measuring against yourself. Find data from outside the company, and reward relative, rather than absolute, performance. Enterprise Rent-A-Car uses a service quality index to measure customers' repeat purchase intentions. Looking backward. Use measures that lead rather than lag the profits in your business. Humana, a health insurer, found that the sickest 10% of its patients account for 80% of its costs; now it offers customers incentives for early screening. Putting your faith in numbers. The soft drinks company Britvic evaluates its executive coaching program not by trying to assign it an ROI number but by tracking participants' careers for a year. Gaming your metrics. The law firm Clifford Chance replaced its single, easy-to-game metric of billable hours with seven criteria on which to base bonuses. Sticking to your numbers too long. Be precise about what you want to assess and explicit about what metrics are assessing it. Such clarity would have helped investors interpret the AAA ratings involved in the financial meltdown. Really good assessment will combine finance managers' relative independence with line managers' expertise.

  11. Performance measures for world class maintenance

    Energy Technology Data Exchange (ETDEWEB)

    Labib, A.W. [Department of Mechanical Engineering, University of Manchester, Institute of Science and Technology, Manchester (United Kingdom)

    1998-12-31

    A main problem in maintenance in general, and in power plants and related equipment in particular, is the lack of a practical, consistent, and adaptive performance measure that provides a focused feedback and integrates preventive and corrective modes of maintenance. The presentation defines concepts of world class and benchmarking. Desirable features in an appropriate performance measure are identified. It then, demonstrates current practices in maintenance and criticises their shortcomings. An alternative model is presented through a case study. The model monitors performance from a general view, and then offers a focused analysis. The main conclusion is that the proposed model offers an adaptive and a dynamic framework, and hence production and maintenance are integrated in a `real time` environment. The system is also flexible in working with any other criteria whether they are of a quantitative or a qualitative nature. (orig.) 16 refs.

  12. Strategic Performance Measurement of Research and Development

    DEFF Research Database (Denmark)

    Parisi, Cristiana; Rossi, Paola

    2015-01-01

    &D management evidenced the limits of Balanced Scorecard to manage and monitor the R&D activities. Therefore, the firms have to create a specific performance measurement system and to link it with the macroindicators of Balanced Scorecard. The controller has a central role in the selection of non...... and in the organizational learning process connected to the feedbackprocess. The study offers an example of integration of R&D performance management with Balanced Scorecard and it contributes to the literature review about the role of controller in a complex system control environment.......The paper used an in depth case study to investigate how firms can integrate the strategic performance measurement of R&D with the Balanced Scorecard. Moreover, the paper investigated the crucial role of controller in the decision making process of this integration.The literature review of R...

  13. Improvement an enterprises marketing performance measurement system

    Directory of Open Access Journals (Sweden)

    Stanković Ljiljana

    2013-01-01

    Full Text Available Business conditions in which modern enterprises do business are more and more complex. The complexity of the business environment is caused by activities of external and internal factors, which imposes the need for the turn in management focus. One of key turns is related to the need of adaptation and development of new business performance evaluation systems. The evaluation of marketing contribution to business performance is very important however a complex task as well. The marketing theory and practice indicates the need for developing adequate standards and systems for evaluating the efficiency of marketing decisions. The better understanding of marketing standards and ways that managers use is a very important factor that affects the efficiency of strategic decision-making. The paper presents the results of researching the way in which managers perceive and apply marketing performance measures. The data that were received through the field research sample enabled the consideration of the managers' attitudes on practical ways of implementing marketing performance measurement and identifying measures that managers imply as used mostly in business practice.

  14. P2 performance measurement tools workbook: Draft

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-06-01

    The underlying purpose of the Department of Energy`s (DOE) Waste Minimization and Pollution Prevention (WMin/P2) Program is compliance with the waste management regulations set forth by the DOE, the federal government, and individual state and local agencies 1. In addition to these regulatory mandates, the increases in waste management costs and public interest in environmental issues have created other drivers to develop and demonstrate an effective WMin/P2 Program. The Waste Minimization Division (EM-334) must have adequate methods to calculate and roll up pollution prevention (P2) progress to meet the WMin/P2 requirements; these requirements support DOE and national objectives and direct funding. This document outlines a system to evaluate DOE`s P2 progress towards the waste reduction requirements. The emphasis of these pollution prevention measurements is to evaluate whether P2 activities are effective, (i.e., has the required amount of waste been reduced as a result of the P2 activities) and to evaluate the cost management of P2 projects. The performance evaluation system presented in this document encompass these aspects: (1) site requirements that apply to all DOE waste generating organizations, (2) a baseline that is not affected by short-term waste generation, and (3) key indicators that can be rolled up across DOE sites and across specific Cognizant Secretarial Officers` (CSO) sites. In a performance-based management system, requirements are the fundamental link between the planning and measurement process. The site requirements are {open_quotes}targets{close_quotes} at the process or activity level. Measuring DOE`s P2 progress toward these requirements provides the necessary feedback to (1) compare performance with the requirements/standards (i.e., whether the reduction requirement of 50% by 1999 is achievable) (2) detect departures from planned levels of performance, and (3) restore performance to the planned levels or achieve new levels of performance.

  15. Coming up short on nonfinancial performance measurement.

    Science.gov (United States)

    Ittner, Christopher D; Larcker, David F

    2003-11-01

    Companies in increasing numbers are measuring customer loyalty, employee satisfaction, and other nonfinancial areas of performance that they believe affect profitability. But they've failed to relate these measures to their strategic goals or establish a connection between activities undertaken and financial outcomes achieved. Failure to make such connections has led many companies to misdirect their investments and reward ineffective managers. Extensive field research now shows that businesses make some common mistakes when choosing, analyzing, and acting on their nonfinancial measures. Among these mistakes: They set the wrong performance targets because they focus too much on short-term financial results, and they use metrics that lack strong statistical validity and reliability. As a result, the companies can't demonstrate that improvements in nonfinancial measures actually affect their financial results. The authors lay out a series of steps that will allow companies to realize the genuine promise of nonfinancial performance measures. First, develop a model that proposes a causal relationship between the chosen nonfinancial drivers of strategic success and specific outcomes. Next, take careful inventory of all the data within your company. Then use established statistical methods for validating the assumed relationships and continue to test the model as market conditions evolve. Finally, base action plans on analysis of your findings, and determine whether those plans and their investments actually produce the desired results. Nonfinancial measures will offer little guidance unless you use a process for choosing and analyzing them that relies on sophisticated quantitative and qualitative inquiries into the factors actually contributing to economic results.

  16. Approaches towards airport economic performance measurement

    Directory of Open Access Journals (Sweden)

    Ivana STRYČEKOVÁ

    2011-01-01

    Full Text Available The paper aims to assess how economic benchmarking is being used by airports as a means of performance measurement and comparison of major international airports in the world. The study focuses on current benchmarking practices and methods by taking into account different factors according to which it is efficient to benchmark airports performance. As methods are considered mainly data envelopment analysis and stochastic frontier analysis. Apart from them other approaches are discussed by airports to provide economic benchmarking. The main objective of this article is to evaluate the efficiency of the airports and answer some undetermined questions involving economic benchmarking of the airports.

  17. $C^3$-index: Revisiting Authors' Performance Measure

    OpenAIRE

    Pradhan, Dinesh; Paul, Partha Sarathi; Maheswari, Umesh; Nandi, Subrata; Chakraborty, Tanmoy

    2016-01-01

    Author performance indices (such as h-index and its variants) fail to resolve ties while ranking authors with low index values (majority in number) which includes the young researchers. In this work we leverage the citations as well as collaboration profile of an author in a novel way using a weighted multi-layered network and propose a variant of page-rank algorithm to obtain a new author performance measure, $C^3$-index. Experiments on a massive publication dataset reveal several interestin...

  18. MODERN INSTRUMENTS FOR MEASURING ORGANIZATIONAL PERFORMANCE

    Directory of Open Access Journals (Sweden)

    RADU CATALINA

    2010-12-01

    Full Text Available Any significant management action can be assessed both in terms of success of immediate goals and as effect of the organization ability to embrace change. Market competition intensifies with the development of Romanian society and its needs. Companies that offer different products and services need to impose certain advantages and to increase their performances. The paper will present modern tools for measuring and evaluating organizational performance, namely: Balanced Scorecard, Deming model and Baldrige model. We also present an example for Balance Scorecard, of an organizations belonging to the cosmetics industry.

  19. Performance measurements of a data link protocol

    Science.gov (United States)

    Kanakia, Hemant; Tobagi, Fouad

    The end-to-end performance of a program implementing IEEE Std 802.2 logical link control protocol, which provides virtual circuit and datagram service and which constitutes the top sublayer of the data link layer of the reference model for Local Area Networks is studied. The measurements of relative execution times of various functions required in transferring data, over virtual circuits or as datagrams, showed that most of the program execution time is spent in a few relatively low-level functions. One of these functions performs block movement of data in memory, and two other functions provide access to various queues. Based on this result, two alternative versions of the program which move data efficiently were written and measured. In this paper the results of the study are reported and their impact on designing hardware and software systems for a network interface are discussed.

  20. Combat-Ready Crew Performance Measurement System.

    Science.gov (United States)

    1974-12-01

    station, as shown in Figure 11, must permit the transformacion of data collected through the five avenues shown in Figure 9 into a digital format...Measureti\\ent System: The performance measurement system consists of the following subsystems: (1) Data Acquisition. A hybrid audio/video/photo/ digital ...processing is provided. (2) Data Processing. A general purpose digital computer with standard peripherals is required, hi addition to executive and

  1. Theoretical and measured performance of diffraction gratings

    Energy Technology Data Exchange (ETDEWEB)

    Bowler, M.A. E-mail: m.bowler@dl.ac.uk; Finetti, P.; Holland, D.M.P.; Humphrey, I.; Quinn, F.M.; Roper, M.D

    2001-07-21

    At the SRS at Daresbury Laboratory, we are undertaking a programme comparing the results from efficiency calculations of diffraction gratings, mainly using the GRADIF code of Neviere, with measured efficiencies. The deviations from the predicted performance are larger for higher orders than for first order. Higher order contamination is important in determining the usability of the beamline for certain types of experiments, particularly at energies below 100 eV.

  2. Theoretical and measured performance of diffraction gratings

    CERN Document Server

    Bowler, M A; Holland, D M P; Humphrey, I; Quinn, F M; Röper, M D

    2001-01-01

    At the SRS at Daresbury Laboratory, we are undertaking a programme comparing the results from efficiency calculations of diffraction gratings, mainly using the GRADIF code of Neviere, with measured efficiencies. The deviations from the predicted performance are larger for higher orders than for first order. Higher order contamination is important in determining the usability of the beamline for certain types of experiments, particularly at energies below 100 eV.

  3. Performance Measurement Systems: A Best Practices Study

    Science.gov (United States)

    1992-12-01

    Vollman , 1990, p. 37). The use of self-directed work teams in this study, to make changes to the Performance Measurement Systems, using personnel from all...strategy and goals of the organization (Atkinson, et al, 1991, p. 86; Ernst and Young, 1990, p. 163). And as Dixon, Nanni and Vollman (1991) point out, a...Reaaining the Productive Edae, Massachusetts Institute of Technology, 1990. Dixon, J.R., Nanni, A.J., and Vollman , T.E., The N Performancge Challenge

  4. Key indicators for organizational performance measurement

    Directory of Open Access Journals (Sweden)

    Firoozeh Haddadi

    2014-09-01

    Full Text Available Each organization for assessing the amount of utility and desirability of their activities, especially in complex and dynamic environments, requires determining and ranking the vital performance indicators. Indicators provide essential links among strategy, execution and ultimate value creation. The aim of this paper is to develop a framework, which identifies and prioritizes Key Performance Indicators (KPIs that a company should focus on them to define and measure progress towards organizational objectives. For this purpose, an applied research was conducted in 2013 in an Iranian telecommunication company. We first determined the objectives of the company with respect to four perspectives of BSC (Balanced Scorecard framework. Next, performance indicators were listed and paired wise comparisons were accomplished by company's high-ranked employees through standard Analytic Hierarchy Process (AHP questionnaires. This helped us establish the weight of each indicator and to rank them, accordingly.

  5. Comparative performance of color-measuring instruments.

    Science.gov (United States)

    Billmeyer, F W

    1969-04-01

    The comparative performance of fifteen different color-measuring instruments was studied for precision (short-term repeatability) and accuracy of color measurement and of color difference measurement. For estimates of accuracy, a GE spectrophotometer was considered the referee instrument. The instruments tested included two integrating sphere spectrophotometers, six integrating sphere colorimeters (four of which were individually calibrated for close conformance to CIE coordinates), and seven 45 degrees / normal calorimeters (four of which were individually calibrated for close conformance to CIE coordinates). Up to fifty-three samples were measured, most of them several times, on each instrument. Paint panels, plastics, porcelain enamels, and ceramic tiles were among the samples used. Overall, the well-established IDL D-1 Signature Color-Eye colorimeter-abridged spectrophotometer and the Hunter D25 Color and Color Difference Meter demonstrated the best and next best performance, respectively, in all categories. Several other instruments, both well established and new, were outstanding in one or more respects. All production instruments tested gave generally satisfactory results.

  6. Advanced Ceramics Property and Performance Measurements

    Science.gov (United States)

    Jenkins, Michael; Salem, Jonathan; Helfinstine, John; Quinn, George; Gonczy, Stephen

    2015-01-01

    Mechanical and physical properties of ceramic bodies can be difficult to measure correctly unless the proper techniques are used. The Advanced Ceramics Committee of ASTM, C-28, has developed dozens of consensus test standards and practices to measure various properties of a ceramic monolith, composite, or coating. The standards give the what, how, how not, and why for measurement of many mechanical, physical, thermal, and performance properties. Using these standards will provide accurate, reliable, and complete data for rigorous comparisons with other test results from your test lab, or another. The C-28 Committee has involved academics, producers, and users of ceramics to write and continually update more than 45 standards since the committees inception in 1986. Included in this poster is a pictogram of the C-28 standards and information on how to obtain individual copies with full details or the complete collection of all of the standards in one volume.

  7. Measuring and managing pain and performance.

    Science.gov (United States)

    Simmonds, Maureen J

    2006-08-01

    Pain and movement dysfunction are invariant sensory and motor expressions of health disorders. They are also complex, inter-related problems and may be accompanied by fatigue and depressed mood. Optimum management is predicated on the appropriate selection, application and interpretation of assessment measures. Research on pain and physical function using physical performance tests has shown that regardless of whether pain and impairment is a consequence of musculo-skeletal injury or systemic disease such as cancers, pain-free individuals outperform those with pain in terms of movement speed and endurance ability across a variety of performance tests (e.g. walk and reach tests, and repeated sit-to-stand and trunk flexion tests). Slow movements are characterized by fractionated and extraneous movement patterns. They are also associated with a relatively high level of muscle activity (amplitude and duration) throughout the task compared to fast movements. Slow movements are also relatively inefficient in terms of physiological energy and time burden. For a similar level of effort, individuals with pain are able to perform significantly less work. Our research has shown that individuals with pain move slower across a range of self-selected movement speeds i.e. slow, preferred and fast speeds. It is also apparent that patients systematically over estimate expected pain during task performance at faster speeds. Preliminary work using speed targeted treatment shows promise in terms of improving physical performance and reducing the burden of illness and physical dysfunction.

  8. Proposal for a GHz count rate near-IR single-photon detector based on a nanoscale superconducting transition edge sensor

    CERN Document Server

    Santavicca, Daniel F; Prober, Daniel E; 10.1117/12.883979

    2012-01-01

    We describe a superconducting transition edge sensor based on a nanoscale niobium detector element. This device is predicted to be capable of energy-resolved near-IR single-photon detection with a GHz count rate. The increased speed and sensitivity of this device compared to traditional transition edge sensors result from the very small electronic heat capacity of the nanoscale detector element. In the present work, we calculate the predicted thermal response time and energy resolution. We also discuss approaches for achieving efficient optical coupling to the sub-wavelength detector element using a resonant near-IR antenna.

  9. Performance measurement with fuzzy data envelopment analysis

    CERN Document Server

    Tavana, Madjid

    2014-01-01

    The intensity of global competition and ever-increasing economic uncertainties has led organizations to search for more efficient and effective ways to manage their business operations.  Data envelopment analysis (DEA) has been widely used as a conceptually simple yet powerful tool for evaluating organizational productivity and performance. Fuzzy DEA (FDEA) is a promising extension of the conventional DEA proposed for dealing with imprecise and ambiguous data in performance measurement problems. This book is the first volume in the literature to present the state-of-the-art developments and applications of FDEA. It is designed for students, educators, researchers, consultants and practicing managers in business, industry, and government with a basic understanding of the DEA and fuzzy logic concepts.

  10. Measuring the performance of maintenance service outsourcing.

    Science.gov (United States)

    Cruz, Antonio Miguel; Rincon, Adriana Maria Rios; Haugan, Gregory L

    2013-01-01

    The aims of this paper are (1) to identify the characteristics of maintenance service providers that directly impact maintenance service quality, using 18 independent covariables; (2) to quantify the change in risk these covariables present to service quality, measured in terms of equipment turnaround time (TAT). A survey was applied to every maintenance service provider (n = 19) for characterization purposes. The equipment inventory was characterized, and the TAT variable recorded and monitored for every work order of each service provider (N = 1,025). Finally, the research team conducted a statistical analysis to accomplish the research objectives. The results of this study offer strong empirical evidence that the most influential variables affecting the quality of maintenance service performance are the following: type of maintenance, availability of spare parts in the country, user training, technological complexity of the equipment, distance between the company and the hospital, and the number of maintenance visits performed by the company. The strength of the results obtained by the Cox model built are supported by the measure of the Rp,e(2) = 0.57 with a value of Rp,e= 0.75. Thus, the model explained 57% of the variation in equipment TAT, with moderate high positive correlation between the dependent variable (TAT) and independent variables.

  11. PERFORMANCE MEASUREMENT THROUGH NON-FINANCIAL INDICATORS

    Directory of Open Access Journals (Sweden)

    Tarta (Blaga Eugenia Anisoara

    2012-07-01

    Full Text Available The information about a company’s performance is necessary in order to evaluate the potential modifications of the economic resources that the entity will be able to control in the future, to anticipate the ability to generate treasury fluxes with the available resources, and to establish the efficiency with which it can employ and make use of new resources. In current practice, the information regarding financial performance are mainly given by “the profit and loss account”, respectively “the budgetary execution account”, but things are not so simple as to reduce them to the synthetic data in a certain periodic report form since it would be a pity to ignore the real - time information given by the account itself. In our paper we have tried to resume the most important non-financial indicators, through which the performance of a company is measured.

  12. A methodical approach to performance measurement experiments : measure and measurement specification

    OpenAIRE

    Hoeksema, F.W.; Veen,, A. m.; Beijnum, van, B.J.F.

    1997-01-01

    This report describes a methodical approach to performance measurement experiments. This approach gives a blueprint for the whole trajectory from the notion of performance measures and how to define them via planning, instrumentation and execution of the experiments to interpretation of the results. The first stage of the approach, Measurement Initialisation, has been worked out completely. It is shown that a well-defined system description allows a procedural approach to defining performance...

  13. A methodical approach to performance measurement experiments : measure and measurement specification

    NARCIS (Netherlands)

    Hoeksema, F.W.; Veen, van der J.T.; Beijnum, van B.J.F.

    1997-01-01

    This report describes a methodical approach to performance measurement experiments. This approach gives a blueprint for the whole trajectory from the notion of performance measures and how to define them via planning, instrumentation and execution of the experiments to interpretation of the results.

  14. A Methodical Approach to Performance Measurement Experiments: Measure and Measurement Specification

    NARCIS (Netherlands)

    Hoeksema, F.W.; van der Veen, Johan (CTIT); van Beijnum, Bernhard J.F.

    1997-01-01

    This report describes a methodical approach to performance measurement experiments. This approach gives a blueprint for the whole trajectory from the notion of performance measures and how to define them via planning, instrumentation and execution of the experiments to interpretation of the results.

  15. Measuring individual work performance: identifying and selecting indicators

    NARCIS (Netherlands)

    Koopmans, L.; Bernaards, C.M.; Hildebrandt, V.H.; Vet, H.C de; Beek, A.J. van der

    2014-01-01

    BACKGROUND: Theoretically, individual work performance (IWP) can be divided into four dimensions: task performance, contextual performance, adaptive performance, and counterproductive work behavior. However, there is no consensus on the indicators used to measure these dimensions. OBJECTIVE: This st

  16. 2007 Merit Principles Survey: Performance Management Measures

    Data.gov (United States)

    Merit Systems Protection Board — 2007 survey responses from selected Federal agencies summarizing the existence of positive performance management practices and employee engagement scores for each...

  17. Developing integrated benchmarks for DOE performance measurement

    Energy Technology Data Exchange (ETDEWEB)

    Barancik, J.I.; Kramer, C.F.; Thode, Jr. H.C.

    1992-09-30

    The objectives of this task were to describe and evaluate selected existing sources of information on occupational safety and health with emphasis on hazard and exposure assessment, abatement, training, reporting, and control identifying for exposure and outcome in preparation for developing DOE performance benchmarks. Existing resources and methodologies were assessed for their potential use as practical performance benchmarks. Strengths and limitations of current data resources were identified. Guidelines were outlined for developing new or improved performance factors, which then could become the basis for selecting performance benchmarks. Data bases for non-DOE comparison populations were identified so that DOE performance could be assessed relative to non-DOE occupational and industrial groups. Systems approaches were described which can be used to link hazards and exposure, event occurrence, and adverse outcome factors, as needed to generate valid, reliable, and predictive performance benchmarks. Data bases were identified which contain information relevant to one or more performance assessment categories . A list of 72 potential performance benchmarks was prepared to illustrate the kinds of information that can be produced through a benchmark development program. Current information resources which may be used to develop potential performance benchmarks are limited. There is need to develop an occupational safety and health information and data system in DOE, which is capable of incorporating demonstrated and documented performance benchmarks prior to, or concurrent with the development of hardware and software. A key to the success of this systems approach is rigorous development and demonstration of performance benchmark equivalents to users of such data before system hardware and software commitments are institutionalized.

  18. Measuring Student Performance in General Organic Chemistry

    Science.gov (United States)

    Austin, Ara C.; Ben-Daat, Hagit; Zhu, Mary; Atkinson, Robert; Barrows, Nathan; Gould, Ian R.

    2015-01-01

    Student performance in general organic chemistry courses is determined by a wide range of factors including cognitive ability, motivation and cultural capital. Previous work on cognitive factors has tended to focus on specific areas rather than exploring performance across all problem types and cognitive skills. In this study, we have categorized…

  19. Measuring Student Performance in General Organic Chemistry

    Science.gov (United States)

    Austin, Ara C.; Ben-Daat, Hagit; Zhu, Mary; Atkinson, Robert; Barrows, Nathan; Gould, Ian R.

    2015-01-01

    Student performance in general organic chemistry courses is determined by a wide range of factors including cognitive ability, motivation and cultural capital. Previous work on cognitive factors has tended to focus on specific areas rather than exploring performance across all problem types and cognitive skills. In this study, we have categorized…

  20. Logistics Performance Measurements - Issues and Reviews

    OpenAIRE

    Abu Bakar, Mohd Azlan; Jaafar, Harlina Suzana; Faisol, Nasruddin; Muhammad, Azlina

    2014-01-01

    Logistics is a backbone for the global supply chains. In Malaysia, logistics are now recognized as strategic industry that positively contribute to gross domestic product (GDP) and performance of logistics is foremost significant. Whereas most of the logistics performance has focused on investigating operational and trade facilitation contexts. Thus, the purpose of this paper is to examine the issues and reviews by practitioners and found 7 key components that translated it into operations pe...

  1. Measuring marketing performance - A case study

    OpenAIRE

    Laakso, Vesa-Pekka

    2011-01-01

    PURPOSE OF THE STUDY The purpose of this study is to develop a marketing dashboard for a Finnish company that operates in the financial industry. The identification of suitable metrics for assessing marketing performance is considered central. This study proposes a new construct (a dashboard) that aims to providing management relevant information on marketing performance from decision-making perspective. METHODOLOGY AND DATA The methodology is a constructive case study. In the...

  2. ESRD - Clinical Performance Measures (CPM) Project

    Data.gov (United States)

    U.S. Department of Health & Human Services — Section 4558 (b) of the Balanced Budget Act (BBA) requires CMS to develop and implement by January 1, 2000, a method to measure and report the quality of renal...

  3. ESRD - Clinical Performance Measures (CPM) Project

    Data.gov (United States)

    U.S. Department of Health & Human Services — Section 4558 (b) of the Balanced Budget Act (BBA) requires CMS to develop and implement by January 1, 2000, a method to measure and report the quality of renal...

  4. 基于聚类NASVD的CE2-GRS月表放射性元素Th计数率分布%Distribution of the Thorium Counting Rate on the Lunar Surface from CE2-GRS Based on Cluster NASVD

    Institute of Scientific and Technical Information of China (English)

    李晓丽; 葛良全; 杨佳; 熊盛青

    2015-01-01

    月表Th元素分布特征对于分析月表岩石成因及化学特征等提供了重要依据。为了减小嫦娥二号伽玛谱(CE2-GRS)噪声对获取Th元素分布特征的影响,提出了一种基于噪声调整的奇异值分解(NASVD)去噪算法。通过伽玛谱预处理、去噪、本底扣除及净峰面积求解等步骤,获得月表放射性元素Th计数率全月分布图。通过与国内外其他方法所获得的Th元素计数率分布图对比有较高的一致性。与传统伽玛谱去噪算法比较,聚类NASVD算法能有效地去除统计涨落噪声影响,提取出嫦娥二号伽玛谱中的特征峰信息。%The distribution of thorium on the lunar surface provides the important evidence for lunar evolution history. It is difficult to obtain the distribution of thorium on the lunar surface from CE2-GRS because of noise in the spectrum. The method for smoothing the spectrum is proposed which is based on cluster NASVD. The counting rate map of thorium on the lunar surface is achieved from CE2-GRS. Counting rate map of thorium gamma-rays shows a surface thorium distribution that is in general agreement with other measurement from LP-GRS and SLENE GRS which have better accuracy. It is more effectively to reduce the noise and get the weak information of characteristic peak used the method of cluster NASVD than other traditional methods for smoothing gamma-ray spectrum.

  5. Performance of Measuring Vibration of MEMS Sensor

    OpenAIRE

    Choe, Jung Seob; Inoue, Eiji; Mitsuoka, Muneshi; Okayasu, Takashi; Hirai, Yasumaru

    2014-01-01

    The purpose of this study is to examine the usefulness of an MEMS sensor for measuring vibration of agricultural vehicle by obtaining serial data of vibration acceleration of agricultural vehicle using an MEMS sensor and translational accelerometer and thereby calculating RMS and PSD for comparison and analysis as a step before construction of measuring system which can identify operating conditions of agricultural packaging machinery at all times. Although there are differences between verti...

  6. Ocular microtremor measurement system: design and performance.

    Science.gov (United States)

    Sheahan, N F; Coakley, D; Hegarty, F; Bolger, C; Malone, J

    1993-05-01

    The frequency of ocular microtremor (OMT) is related to the functional status of the brain stem, and thus OMT may be useful in the diagnosis and management of brain stem disorders. The paper discusses the design of an OMT measurement system and reports quantitative specifications for three portable systems. All systems use a piezo-electric element as the transducer, which measures the displacement of the sclera during eye rotations. The systems differ in the manner in which the signal is recorded. All systems can detect eye movements corresponding to displacements of the sclera ranging from 12 to over 3000 nm. The frequency responses of all systems are flat (< 2 dB deviation from peak response) between 20 and 150 Hz. The phase response shows deviations (< pi) at the extremes of this range, but qualitative comparison of input and measured signals demonstrates that phase distortion is not excessive. Thus all systems are acceptable for clinical studies involving OMT.

  7. Partnership Versus Public Ownership of Accounting Firms: Exploring RelativePerformance, Performance Measurement and Measurement Issues

    Directory of Open Access Journals (Sweden)

    Mark E Pickering

    2012-09-01

    Full Text Available Despite theoretical arguments that partnerships are the most efficient ownership form for professional service firms (PSFs, PSFs are increasingly moving to other ownership structures, such as publicly listed companies (PLCs. Research on the comparative performance of PSF, PLCs and partnerships is sparse with conflicting results suggesting that some segments of PSFs are moving to a less efficient form. This study explores the performance of two Australian accounting PLCs compared to a sample of similar sized mid tier accounting firms. The accounting PLCs achieved substantially higher revenue growth rates but lower productivity than the partnership sample. Measurement issues were identified in the use of closing resource numbers and different treatment of reporting merger and acquisition revenues which may partially explain the underperformance of publicly owned PSFs in prior studies. The need for research at a more detailed level exploring the market and service focus, organisational structures, resources utilised and resource costs across different PSF ownership forms is suggested.

  8. Optimization of injection dose based on noise-equivalent count rate with use of an anthropomorphic pelvis phantom in three-dimensional 18F-FDG PET/CT.

    Science.gov (United States)

    Inoue, Kazumasa; Kurosawa, Hideo; Tanaka, Takashi; Fukushi, Masahiro; Moriyama, Noriyuki; Fujii, Hirofumi

    2012-07-01

    The optimal injection dose for imaging of the pelvic region in 3D FDG PET tests was investigated based on the noise-equivalent count (NEC) rate with use of an anthropomorphic pelvis phantom. Count rates obtained from an anthropomorphic pelvis phantom were compared with those of pelvic images of 60 patients. The correlation between single photon count rates obtained from the pelvic regions of patients and the doses per body weight was also evaluated. The radioactivity at the maximum NEC rate was defined as an optimal injection dose, and the optimal injection dose for the body weight was evaluated. The image noise of a phantom was also investigated. Count rates obtained from an anthropomorphic pelvis phantom corresponded well with those from the human pelvis. The single photon count rate obtained from the phantom was 9.9 Mcps at the peak NEC rate. The coefficient of correlation between the single photon count rate and the dose per weight obtained from patient data was 0.830. The optimal injection doses for a patient with weighing 60 kg were estimated to be 375 MBq (6.25 MBq/kg) and 435 MBq (7.25 MBq/kg) for uptake periods of 60 and 90 min, respectively. The image noise was minimal at the peak NEC rate. We successfully estimated the optimal injection dose based on the NEC rate in the pelvic region on 3D FDG PET tests using an anthropomorphic pelvis phantom.

  9. A measure for the batting performance of cricket players : research ...

    African Journals Online (AJOL)

    Abstract. A single measure that can be used to assess the performance of batsmen ... a formula for batting performance and a classification table for Test players. Keywords: Batting performance, Consistency, Cricket, Present form of a batsman ...

  10. 45 CFR 305.2 - Performance measures.

    Science.gov (United States)

    2010-10-01

    ... the State, as of the end of the fiscal year) who have been born out-of-wedlock and for whom paternity... the end of the preceding fiscal year who were born out-of-wedlock. The equation to compute the measure... Percentage means the ratio that the total number of minor children who have been born out-of-wedlock and for...

  11. Performance Measurement of the Heterogeneous Network

    CERN Document Server

    Kanrar, Soumen

    2011-01-01

    Till today we dreamt of imperceptible delay in a network. The computer science research grows today faster than ever offering more and more services (computational representational, graphical, intelligent implication etc) to its user. But the problem lies in "greater the volume of services greater the problem of delay". So tracing delay, or performance analysis focusing on time required for computation, in a existing or newly configured network is necessary to conclude the improvement. In this paper, we have done the job of delay analysis in a multi-server system,. For this proposed work we have used continuous -parameter Markov chains (Non -Birth -Death Process),for developing the required models, and for developing the simulator we have used queuing networking, different scheduling algorithms at the servers queue and process scheduling . The work can be further extended to test the performance of wireless domain.

  12. Economic profit and performance measurement in banking

    OpenAIRE

    Ralph C. Kimball

    1998-01-01

    Successful bank operation requires managers to weigh complex trade-offs between growth, return, and risk. In recent years banks increasingly have adopted innovative performance metrics based on the concept of economic profit, rather than accounting earnings to assist managers in making such difficult and complex decisions. Banks hope in this way to elicit better decision-making by managers and also too align managerial behavior more closely with the interests of shareholders. This article ana...

  13. "Productivity performance measurement - follow-up"

    DEFF Research Database (Denmark)

    Kristensen, Troels

    2008-01-01

    The Danish Ministry of Health has published the third annual report on hospital productivity. This experience has contributed to policy goals becoming more detailed and ambitious. New policy goals are: to include hospital productivity measures at less aggregated levels, to include labour producti......The Danish Ministry of Health has published the third annual report on hospital productivity. This experience has contributed to policy goals becoming more detailed and ambitious. New policy goals are: to include hospital productivity measures at less aggregated levels, to include labour...... productivity and hospital psychiatric care, to provide web-based solutions that facilitate access to productivity data, and to develop new classifications of hospital levels related to structural reforms....

  14. Performance appraisal & promotion process: A measured approach

    Science.gov (United States)

    Kumar, Jitendra

    2012-06-01

    Most of the companies have yearly performance appraisal process for their employees. This process involves rating of employees by their manager. And Companies rely purely on managerís state of thinking and perception. Humans have tendency to become biased, corrupt, give favor to some employees whom they like. This favor is due to some other reasons e.g. personal reason, social reason, political reason, flattering. All these reasons are not related to the work that the employee is doing for the organization.

  15. CMS performance for CP violation measurements

    Energy Technology Data Exchange (ETDEWEB)

    Pralavorio, P.

    1996-12-31

    Recent set of structure functions, branching ratios and the current understanding of detector performance lead to a new evaluation of the CP reach of CMS. Compared to previous analysis, expected numbers of fully reconstructed and {mu} tagged B events are smaller, but are partly recovered thanks to progress on low pT electron identification based upon the high-resolution and fine granular electromagnetic calorimeter. This allow to use electrons for tagging purpose as well s for J/{psi} {yields} e{sup +}e{sup -}reconstruction. (author). 13 refs.

  16. Background and muon counting rates in underground muon measurements with a plastic scintillator counter based on a wavelength shifting fibre and a multi-pixel avalanche photodiode readout

    National Research Council Canada - National Science Library

    Volchenko, Vladimir I; Akhrameev, Evgeniy V; Bezrukov, Leonid B; Dzaparova, Irina M; Davitashvili, Irakliy Sh; Enqvist, Timo; Fynbo, Hans; Guliev, Zhamal Sh; Inzhechik, Lev V; Izmaylov, Alexander O; Joutsenvaara, Jari; Khabibullin, Marat M; Khotjantsev, Alexey N; Kudenko, Yuri G; Kuusiniemi, Pasi; Lubsandorzhiev, Bayarto K; Lubsandorzhiev, Nima B; Mineev, Oleg V; Olanterä, Lauri; Petkov, Valeriy B; Poleshuk, Roman V; Räihä, Tomi; Shaibonov, Bator A. M; Sarkamo, Juho; Shaykhiev, Alexey T; Trzaska, Wladyslaw; Volchenko, Galina V; Yanin, Alexey F; Yershov, Nikolay V

    2010-01-01

    ...×3.0 cm3 size scintillator counter with a wavelength shifting fibre and a multi-pixel Geiger mode avalanche photodiode readout in the Baksan underground laboratory at a depth of 200 metres of water equivalent...

  17. Employee participation in developing performance measures and job performance: on the role of measurement properties and incentives

    NARCIS (Netherlands)

    Groen, B.; Wouters, M.; Wilderom, C.

    2013-01-01

    Involving employees in the development of performance measures often results in better employee job performance. Yet not all prior studies find such a direct effect. This study explains these inconsistent findings. It focuses on the measurement properties of performance measures and using them for

  18. Performance Measurement of Cloud Computing Services

    CERN Document Server

    Suakanto, Sinung; Suhardi,; Saragih, Roberd

    2012-01-01

    Cloud computing today has now been growing as new technologies and new business models. In distributed technology perspective, cloud computing most like client-server services like web-based or web-service but it used virtual resources to execute. Currently, cloud computing relies on the use of an elastic virtual machine and the use of network for data exchange. We conduct an experimental setup to measure the quality of service received by cloud computing customers. Experimental setup done by creating a HTTP service that runs in the cloud computing infrastructure. We interest to know about the impact of increasing the number of users on the average quality received by users. The qualities received by user measured within two parameters consist of average response times and the number of requests time out. Experimental results of this study show that increasing the number of users has increased the average response time. Similarly, the number of request time out increasing with increasing number of users. It m...

  19. A multivariate approach in measuring innovation performance

    Directory of Open Access Journals (Sweden)

    Elżbieta Roszko-Wójtowicz

    2016-12-01

    Full Text Available The goal of this research is to propose a procedure of innovativeness measurement, taking Summary Innovation Index methodology as a starting point. In contemporary world, innovative activity is perceived as a source of competitiveness and economic growth. New products, utility models, trademarks and creative projects are an important element of present socio-economic reality. In particular, authors focus on selection and application of multivariable statistical analysis to distinguish factors influencing innovativeness of EU economies to the highest degree. The result of quantitative analyses is linear ordering of EU countries by the level of their innovativeness based on the reduced set of diagnostic variables. The rating was compared with the outcome presented in Innovation Union Scoreboard (IUS with Summary Innovation Index (SII. Conducted analysis proves a convergence between authors’ results and existing ratings of innovativeness. Nevertheless, the main conclusion is that the methodology of innovativeness assessment remains an open issue and requires further research. Especially, it should first and foremost concentrate on deeper verification of a small set of variables that have the strongest impact on innovativeness. It is both, in economic and social interest, to get a clear picture of innovativeness driving forces.

  20. Developing Performance Measures for Manned-Unmanned Teaming Skills

    Science.gov (United States)

    2015-02-01

    a new concept (Stewart, 1985; Stewart, Dohme, & Nullmeyer, 1999). For the past two decades, performance measures have been within the capabilities...that flight training grades alone may not be a valid predictor of future aviator performance in the unit. For instance, Bales, Rickus, and Ambler...Research Report 1983 Developing Performance Measures for Manned-Unmanned Teaming Skills John E. Stewart and

  1. Performance measurement, expectancy and agency theory: An experimental study

    NARCIS (Netherlands)

    Sloof, R.; van Praag, C.M.

    2008-01-01

    Theoretical analyses of (optimal) performance measures are typically performed within the realm of the linear agency model. This model implies that, for a given compensation scheme, the agent’s optimal effort is unrelated to the amount of noise in the performance measure. In contrast, expectancy

  2. Performance measurement, expectancy and agency theory: An experimental study

    NARCIS (Netherlands)

    Sloof, R.; van Praag, C.M.

    2005-01-01

    Theoretical analyses of (optimal) performance measures are typically performed within the realm of the linear agency model. An important implication of this model is that, for a given compensation scheme, the agent's optimal effort choice is unrelated to the amount of noise in the performance measur

  3. Risk-adjusted performance measures and implied risk-attitudes

    NARCIS (Netherlands)

    Plantinga, Auke; Groot, Sebastiaan de

    2001-01-01

    In this article we study the relation between performance measures and preferences functions. In particular, we examine to what extent performance measures can be used as alternatives for preference functions. We study the Sharpe ratio, Sharpe’s alpha, the expected return measure, the Sortino ratio,

  4. Radiometric instrumentation and measurements guide for photovoltaic performance testing

    Energy Technology Data Exchange (ETDEWEB)

    Myers, D.

    1997-04-01

    The Photovoltaic Module and Systems Performance and Engineering Project at the National Renewable Energy Laboratory performs indoor and outdoor standardization, testing, and monitoring of the performance of a wide range of photovoltaic (PV) energy conversion devices and systems. The PV Radiometric Measurements and Evaluation Team (PVSRME) within that project is responsible for measurement and characterization of natural and artificial optical radiation which stimulates the PV effect. The PV manufacturing and research and development community often approaches project members for technical information and guidance. A great area of interest is radiometric instrumentation, measurement techniques, and data analysis applied to understanding and improving PV cell, module, and system performance. At the Photovoltaic Radiometric Measurements Workshop conducted by the PVSRME team in July 1995, the need to communicate knowledge of solar and optical radiometric measurements and instrumentation, gained as a result of NREL`s long-term experiences, was identified as an activity that would promote improved measurement processes and measurement quality in the PV research and manufacturing community. The purpose of this document is to address the practical and engineering need to understand optical and solar radiometric instrument performance, selection, calibration, installation, and maintenance applicable to indoor and outdoor radiometric measurements for PV calibration, performance, and testing applications. An introductory section addresses radiometric concepts and definitions. Next, concepts essential to spectral radiometric measurements are discussed. Broadband radiometric instrumentation and measurement concepts are then discussed. Each type of measurement serves as an important component of the PV cell, module, and system performance measurement and characterization process.

  5. New’ Performance Measures: Determinants of Their Use and Their Impact on Performance

    NARCIS (Netherlands)

    F.H.M. Verbeeten (Frank)

    2005-01-01

    textabstractThis study investigates the extent to which Dutch organizations use ‘new’ performance measures to deal with the perceived inadequacies of traditional accounting performance measures. In addition, the determinants of the use of these ‘new’ performance measures are documented; finally, the

  6. Structure analysis and performance measurement of Chinese health delivery system

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Objective: Although evidence has already demonstrated that the performance of Health Delivery System (HDS) varies widely across nations, relatively little is known about the factors that give rise to these variations and the key point to improve the performance besides adjusting system structure. By setup of HDS performance measurement system on the base of association of financial, social, and environmental characteristics, we construct system dynamic model of HDS to simulate the invention policies. Methods:Performance measures were collected from HDS in 31 regions of China and combined with secondary data sources. Multivariate, linear, nonlinear regression and factor analysis models were used to estimate associations between system characteristics and the performance. Results: Performance varied significantly with the size, financial resources and organizational structure of HDS. Performance measurement system of health delivery system was developed to give the rank of all Chinese regions. Conclusion: Performance measurement system of HDS is the basic of HDS modeling by system dynamic.

  7. The effects of performance measurement and compensation on motivation

    NARCIS (Netherlands)

    van Herpen, M.; van Praag, C.M.; Cools, C.

    2005-01-01

    This paper analyzes empirically the relationship between pay and performance. Economic and psychological theories predict that the design and implementation of a performance measurement and compensation system affect the motivation of employees. Our survey results demonstrate a positive relationship

  8. The effects of performance measurement and compensation on motivation

    NARCIS (Netherlands)

    van Herpen, M.; van Praag, C.M.; Cools, C.

    2005-01-01

    This paper analyzes empirically the relationship between pay and performance. Economic and psychological theories predict that the design and implementation of a performance measurement and compensation system affect the motivation of employees. Our survey results demonstrate a positive relationship

  9. Managing change in performance measures within a manufacturing context

    OpenAIRE

    Salloum, Mohammed

    2013-01-01

    Even though the literature available within the field of performance measurement and management (PMM) is extensive, a gap exists regarding how change is managed in performance measures (PM).  This gap is corroborated by the empirical data underlining that only a few organisations have mechanisms in place for managing PM change. The need to manage change in PM arises from the consensus that performance measurement systems (PMS) should reflect the strategy and direct environments of the company...

  10. Performance measurement for product lifecycle management: a systemact literature review

    Directory of Open Access Journals (Sweden)

    Fernando Fonseca

    2012-01-01

    Full Text Available The aim of this study is to identify recommendations as well as the main performance indicator for developing a performance measurement system (PMS for product lifecycle management (PLM approach. Thus it was performed a systematic literature review that identified 22 recommendations and 296 performance indicators.

  11. Enabling employees through co-development of performance measures

    NARCIS (Netherlands)

    Groen, B.A.C.

    2012-01-01

    Various studies have demonstrated that involving employees in the development of performance measures can lead to improved employee performance. Yet to date it is unclear how such performance improvement comes about. In order to enable companies to improve the performance of their employees, this di

  12. Transgressing the System: Performance Measurement and Library Development.

    Science.gov (United States)

    Schlukbier, George

    1978-01-01

    A discussion of the interrelated aspects of library performance measurement and what data collection means to library planning. Methodologies considered are cost analysis, quantitative vs qualitative measurement, community analysis, and citizen attitudes and opinions. (JAB)

  13. Assessing Green Infrastructure Performance Using Remote Hydologic Monitoring Measures

    Science.gov (United States)

    Two locations in Cincinnati were instrumented with level sensing technologies to measure stormwater flow in porous pavement and bioretention areas. Results indicate good performance of porous pavement and a cost effective application of technology to measure those flows. Result...

  14. Air Force Materiel Command: A Survey of Performance Measures

    National Research Council Canada - National Science Library

    Leonard, Marcia

    2004-01-01

    ... and Transformation all represent efforts to find and implement effective answers (RAND, 2003:ix). And, while there appears to be a consensus that better performance measures are needed, there is little agreement on exactly what should be measured, and how...

  15. Quality indicators and performance measures in diabetes care.

    Science.gov (United States)

    Aron, David C

    2014-03-01

    The operations of any portion of the healthcare delivery system, eg, ambulatory care, the consultation and referral process, or hospital care, are critically dependent upon their control systems. The quality of health care produced by the system and its components is also subject to "control." One of the regulatory mechanisms involves performance measures. The development of good measures of quality is a complex and dynamic process. Within endocrinology, most measures have addressed diabetes care and most quality measurement in diabetes has focused on the ambulatory setting and mainly includes measures of process and intermediate outcomes. This review addresses quality and performance measures for diabetes, their development, characteristics, use, misuse, and future prospects.

  16. Translation of device performance measurements to reference conditions

    Energy Technology Data Exchange (ETDEWEB)

    Osterwald, C.R.

    1986-09-15

    Translation of photovoltaic performance measurements is required when a measurement is made under conditions different from those specified in standard measurement procedures. These specifications can be categorized into three areas: the device temperature at the time of measurement; the total incident irradiance level; and the spectral distribution of the incident irradiance. If these three conditions are identical to those specified in the standard measurement procedures, then no translation is required. However, because in practice the standard measurement conditions can be very difficult (and expensive) to achieve, one or more of these three conditions will generally be different and translation is then necessary. In general, the method used for translation is to know how a device responds to different conditions, measure the difference at the time the performance is determined, and correct the performance measurement to the standard conditions.

  17. Performance Measurement and Accountability of WAQF Institutions in Malaysia

    Directory of Open Access Journals (Sweden)

    Arshad Roshayani

    2017-01-01

    Full Text Available It has been seen for the past few years that the revival of waqf institutions has been an upsurge interest of Muslim communities around the world. In line with the revitalization, the issues of measuring and managing waqf performance are growingly being discussed and concerned by the academicians and constituents. Waqf institutions need to demonstrate their performance as whether they have effectively and efficiently managed in order to discharge their accountability to various waqf stakeholders. There are many studies conducted to measure the performance of various organizations in the private, public and third sector. However, studies on the performance measurement of waqf institution are still limited, and financial ratios become the dominant measurement in those studies. Being a non-profit in nature and religious entity, managing the entrusted waqf assets for social and economic development of the society, the performance measurement of waqf institutions should also focus on realizing their missions. Therefore, the aim of this paper is to discuss both financial and non-financial measurement that can be adapted by waqf institutions to assess their performance in discharging their accountability. Drawing from the experience on performance measurement discussed in the non-profit organizations literatures, this conceptual paper is hoped to provide significant insight on how waqf institutions performance may be measured and provide a tool to benchmark the best practices that can guide them to achieve their goals and missions.

  18. Assessing Organizational Effectiveness: The Role of Performance Measures

    Science.gov (United States)

    Matthews, Joseph R.

    2011-01-01

    A brief overview of the challenges associated with demonstrating organizational effectiveness and the role of performance measures as surrogates for demonstrating effectiveness are provided. The complexity of analysis and the importance of use of performance measures provide a way to review the strengths and weakness of eight different ways to…

  19. Assessing Organizational Effectiveness: The Role of Performance Measures

    Science.gov (United States)

    Matthews, Joseph R.

    2011-01-01

    A brief overview of the challenges associated with demonstrating organizational effectiveness and the role of performance measures as surrogates for demonstrating effectiveness are provided. The complexity of analysis and the importance of use of performance measures provide a way to review the strengths and weakness of eight different ways to…

  20. 40 CFR 1065.205 - Performance specifications for measurement instruments.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 32 2010-07-01 2010-07-01 false Performance specifications for... (CONTINUED) AIR POLLUTION CONTROLS ENGINE-TESTING PROCEDURES Measurement Instruments § 1065.205 Performance specifications for measurement instruments. Your test system as a whole must meet all the applicable...

  1. Environmental Uncertainty, Performance Measure Variety and Perceived Performance in Icelandic Companies

    DEFF Research Database (Denmark)

    Rikhardsson, Pall; Sigurjonsson, Throstur Olaf; Arnardottir, Audur Arna

    The use of performance measures and performance measurement frameworks has increased significantly in recent years. The type and variety of performance measures in use has been researched in various countries and linked to different variables such as the external environment, performance measurem......The use of performance measures and performance measurement frameworks has increased significantly in recent years. The type and variety of performance measures in use has been researched in various countries and linked to different variables such as the external environment, performance...... measurement frameworks, and management characteristics. This paper reports the results of a study carried out at year end 2013 of the use of performance measures by Icelandic companies and the links to perceived environmental uncertainty, management satisfaction with the performance measurement system...... and the perceived performance of the company. The sample was the 300 largest companies in Iceland and the response rate was 27%. Compared to other studies the majority of the respondents use a surprisingly high number of different measures – both financial and non-financial. This made testing of the three...

  2. The balanced scorecard--measures that drive performance.

    Science.gov (United States)

    Kaplan, R S; Norton, D P

    1992-01-01

    Frustrated by the inadequacies of traditional performance measurement systems, some managers have abandoned financial measures like return on equity and earnings per share. "Make operational improvements and the numbers will follow," the argument goes. But managers do not want to choose between financial and operational measures. Executives want a balanced presentation of measures that allow them to view the company from several perspectives simultaneously. During a year-long research project with 12 companies at the leading edge of performance measurement, the authors developed a "balanced scorecard," a new performance measurement system that gives top managers a fast but comprehensive view of the business. The balanced scorecard includes financial measures that tell the results of actions already taken. And it complements those financial measures with three sets of operational measures having to do with customer satisfaction, internal processes, and the organization's ability to learn and improve--the activities that drive future financial performance. Managers can create a balanced scorecard by translating their company's strategy and mission statements into specific goals and measures. To create the part of the scorecard that focuses on the customer perspective, for example, executives at Electronic Circuits Inc. established general goals for customer performance: get standard products to market sooner, improve customers' time-to-market, become customers' supplier of choice through partnerships, and develop innovative products tailored to customer needs. Managers translated these elements of strategy into four specific goals and identified a measure for each.

  3. Performance measurement, expectancy and agency theory: An experimental study

    OpenAIRE

    Sloof, R.; van Praag, C.M.

    2005-01-01

    Theoretical analyses of (optimal) performance measures are typically performed within the realm of the linear agency model. An important implication of this model is that, for a given compensation scheme, the agent's optimal effort choice is unrelated to the amount of noise in the performance measure. In contrast, expectancy theory as developed by psychologists predicts that effort levels are increasing in the signal-to-noise ratio. We conduct a real effort laboratory experiment to assess the...

  4. Performance measurement, expectancy and agency theory: An experimental study

    OpenAIRE

    Sloof, R.; van Praag, C.M.

    2005-01-01

    Theoretical analyses of (optimal) performance measures are typically performed within the realm of the linear agency model. An important implication of this model is that, for a given compensation scheme, the agent's optimal effort choice is unrelated to the amount of noise in the performance measure. In contrast, expectancy theory as developed by psychologists predicts that effort levels are increasing in the signal-to-noise ratio. We conduct a real effort laboratory experiment to assess the...

  5. Measuring Marketing Performance: Investigation into Practice and Certification

    Institute of Scientific and Technical Information of China (English)

    WANG Xiu-cun; LU Bin-bin

    2005-01-01

    The content validity of marketing performance measurement metrics in China is reported. Based on the respondents in the research, the statistic analysis of relative importance, and the frequencies of use of marketing metrics are given. It is shown that the marketing metrics are consistent with market orientation, sectors and the role of managers, that affect the way in measuring marketing performance. The investigation results provide certified basis for developing marketing performance assessment systems in Chinese enterprises.

  6. Performance measuring of tourism small medium-sized enterprises

    OpenAIRE

    Anca Borza; Ovidiu Bordean

    2006-01-01

    The article analyzes the performance measurement processes within the small medium-sized enterprises that run businesses in Romania's tourism sector. Related to contemporary approaches to improving business performance in the management literature, performance measurement approaches are analyzed using the balanced scorecard framework. Balanced scorecards proved to be a powerful tool that can inform the managers about the things that are working or not within a company, what is to be improved ...

  7. Performance measurement, expectancy and agency theory: An experimental study

    NARCIS (Netherlands)

    Sloof, R.; van Praag, C.M.

    2005-01-01

    Theoretical analyses of (optimal) performance measures are typically performed within the realm of the linear agency model. An important implication of this model is that, for a given compensation scheme, the agent's optimal effort choice is unrelated to the amount of noise in the performance

  8. Thermal performance measurements on ATLAS-SCT KB forward modules

    CERN Document Server

    Donegà, M; D'Onofrio, M; Ferrère, D; Hirt, C; Ikegami, Y; Kohriki, T; Kondo, T; Lindsay, S; Mangin-Brinet, M; Niinikoski, T O; Pernegger, H; Perrin, E; Taylor, G; Terada, S; Unno, Y; Wallny, R; Weber, M

    2003-01-01

    The thermal design of the KB module is presented. A Finite Elements Analysis (FEA) has been used to finalize the module design. The thermal performance of an outer irradiated KB module has been measured at different cooling conditions. The thermal runaway of the module has been measured. The FEA model has been compared with the measurements and has been used to predict the thermal performance in a realistic SCT scenario.

  9. Performance assessment of self-interrogation neutron resonance densitometry for spent nuclear fuel assay

    Energy Technology Data Exchange (ETDEWEB)

    Hu, Jianwei, E-mail: huj1@ornl.gov [Reactor and Nuclear Systems Division, Oak Ridge National Laboratory, 1 Bethel Valley Road, PO Box 2008, MS-6172, Oak Ridge, TN 37831-6172 (United States); Tobin, Stephen J.; LaFleur, Adrienne M.; Menlove, Howard O.; Swinhoe, Martyn T. [Nuclear Engineering and Nonproliferation Division, Los Alamos National Laboratory (United States)

    2013-11-21

    Self-Interrogation Neutron Resonance Densitometry (SINRD) is one of several nondestructive assay (NDA) techniques being integrated into systems to measure spent fuel as part of the Next Generation Safeguards Initiative (NGSI) Spent Fuel Project. The NGSI Spent Fuel Project is sponsored by the US Department of Energy's National Nuclear Security Administration to measure plutonium in, and detect diversion of fuel pins from, spent nuclear fuel assemblies. SINRD shows promising capability in determining the {sup 239}Pu and {sup 235}U content in spent fuel. SINRD is a relatively low-cost and lightweight instrument, and it is easy to implement in the field. The technique makes use of the passive neutron source existing in a spent fuel assembly, and it uses ratios between the count rates collected in fission chambers that are covered with different absorbing materials. These ratios are correlated to key attributes of the spent fuel assembly, such as the total mass of {sup 239}Pu and {sup 235}U. Using count rate ratios instead of absolute count rates makes SINRD less vulnerable to systematic uncertainties. Building upon the previous research, this work focuses on the underlying physics of the SINRD technique: quantifying the individual impacts on the count rate ratios of a few important nuclides using the perturbation method; examining new correlations between count rate ratio and mass quantities based on the results of the perturbation study; quantifying the impacts on the energy windows of the filtering materials that cover the fission chambers by tallying the neutron spectra before and after the neutrons go through the filters; and identifying the most important nuclides that cause cooling-time variations in the count rate ratios. The results of these studies show that {sup 235}U content has a major impact on the SINRD signal in addition to the {sup 239}Pu content. Plutonium-241 and {sup 241}Am are the two main nuclides responsible for the variation in the count

  10. Simulated Performance of the Integrated Passive Neutron Albedo Reactivity and Self-Interrogation Neutron Resonance Densitometry Detector Designed for Spent Fuel Measurement at the Fugen Reactor in Japan

    Energy Technology Data Exchange (ETDEWEB)

    Ulrich, Timothy J. II [Los Alamos National Laboratory; Lafleur, Adrienne M. [Los Alamos National Laboratory; Menlove, Howard O. [Los Alamos National Laboratory; Swinhoe, Martyn T. [Los Alamos National Laboratory; Tobin, Stephen J. [Los Alamos National Laboratory; Seya, Michio [Los Alamos National Laboratory; Bolind, Alan M. [Los Alamos National Laboratory

    2012-07-16

    An integrated nondestructive assay instrument, which combined the Passive Neutron Albedo Reactivity (PNAR) and the Self-Interrogation Neutron Resonance Densitometry (SINRD) techniques, is the research focus for a collaborative effort between Los Alamos National Laboratory (LANL) and the Japanese Atomic Energy Agency as part of the Next Generation Safeguard Initiative. We will quantify the anticipated performance of this experimental system in two physical environments: (1) At LANL we will measure fresh Low Enriched Uranium (LEU) assemblies for which the average enrichment can be varied from 0.2% to 3.2% and for which Gd laced rods will be included. (2) At Fugen we will measure spent Mixed Oxide (MOX-B) and LEU spent fuel assemblies from the heavy water moderated Fugen reactor. The MOX-B assemblies will vary in burnup from {approx}3 GWd/tHM to {approx}20 GWd/tHM while the LEU assemblies ({approx}1.9% initial enrichment) will vary from {approx}2 GWd/tHM to {approx}7 GWd/tHM. The estimated count rates will be calculated using MCNPX. These preliminary results will help the finalization of the hardware design and also serve a guide for the experiment. The hardware of the detector is expected to be fabricated in 2012 with measurements expected to take place in 2012 and 2013. This work is supported by the Next Generation Safeguards Initiative, Office of Nuclear Safeguards and Security, National Nuclear Security Administration.

  11. Strategy Archetypes Adopted by Icelandic Companies, Their Fit with Performance Measures and Effects on Financial Performance

    DEFF Research Database (Denmark)

    Rikhardsson, Pall; Sigurjonsson, Olaf; Arnardottir, Audur Arna

    or operational strategies seem to favor financial measures and are less likely to use non-financial measures. We take this research further by focusing not only on the link between strategy types and performance measures but also on what specific performance measures are used in connection to which strategies......Past research seems to suggest that companies adopting certain strategies favor certain sets of performance measures. That is to say companies using entrepreneurial focused strategies favor non-financial measures or a balanced mix of financial and non-financial measures. Companies adopting reactive....... Furthermore, we examine the link between the strategies adopted, the performance measures favored and the financial performance of the companies. The empirical data collection was carried out in winter 2013 with a population of the 300 largest companies in Iceland. The survey was sent to the CFO...

  12. Performance measure for image fusion considering region information

    Institute of Scientific and Technical Information of China (English)

    LIU Gang; L(U) Xue-qin

    2007-01-01

    An objective performance measure for image fusion considering region information is proposed. The measure not only reflects how much the pixel level information that fused image takes from the source image, but also considers the region information between source images and fused image. The measure is meaningful and explicit. Several simulations were conducted to show that it accords well with the subjective evaluations.

  13. Performance Measure as Feedback Variable in Image Processing

    Directory of Open Access Journals (Sweden)

    Ristić Danijela

    2006-01-01

    Full Text Available This paper extends the view of image processing performance measure presenting the use of this measure as an actual value in a feedback structure. The idea behind is that the control loop, which is built in that way, drives the actual feedback value to a given set point. Since the performance measure depends explicitly on the application, the inclusion of feedback structures and choice of appropriate feedback variables are presented on example of optical character recognition in industrial application. Metrics for quantification of performance at different image processing levels are discussed. The issues that those metrics should address from both image processing and control point of view are considered. The performance measures of individual processing algorithms that form a character recognition system are determined with respect to the overall system performance.

  14. Multi-instance dictionary learning via multivariate performance measure optimization

    KAUST Repository

    Wang, Jim Jing-Yan

    2016-12-29

    The multi-instance dictionary plays a critical role in multi-instance data representation. Meanwhile, different multi-instance learning applications are evaluated by specific multivariate performance measures. For example, multi-instance ranking reports the precision and recall. It is not difficult to see that to obtain different optimal performance measures, different dictionaries are needed. This observation motives us to learn performance-optimal dictionaries for this problem. In this paper, we propose a novel joint framework for learning the multi-instance dictionary and the classifier to optimize a given multivariate performance measure, such as the F1 score and precision at rank k. We propose to represent the bags as bag-level features via the bag-instance similarity, and learn a classifier in the bag-level feature space to optimize the given performance measure. We propose to minimize the upper bound of a multivariate loss corresponding to the performance measure, the complexity of the classifier, and the complexity of the dictionary, simultaneously, with regard to both the dictionary and the classifier parameters. In this way, the dictionary learning is regularized by the performance optimization, and a performance-optimal dictionary is obtained. We develop an iterative algorithm to solve this minimization problem efficiently using a cutting-plane algorithm and a coordinate descent method. Experiments on multi-instance benchmark data sets show its advantage over both traditional multi-instance learning and performance optimization methods.

  15. From mission to measures: performance measure development for a Teen Pregnancy Prevention Program.

    Science.gov (United States)

    Farb, Amy Feldman; Burrus, Barri; Wallace, Ina F; Wilson, Ellen K; Peele, John E

    2014-03-01

    The Office of Adolescent Health (OAH) sought to create a comprehensive set of performance measures to capture the performance of the Teen Pregnancy Prevention (TPP) program. This performance measurement system needed to provide measures that could be used internally (by both OAH and the TPP grantees) for management and program improvement as well as externally to communicate the program's progress to other interested stakeholders and Congress. This article describes the selected measures and outlines the considerations behind the TPP measurement development process. Issues faced, challenges encountered, and lessons learned have broad applicability for other federal agencies and, specifically, for TPP programs interested in assessing their own performance and progress.

  16. Process Performance Measurement in a Maintenance Process; Prozess Performance Measurement im Auftragsbearbeitungsprozess

    Energy Technology Data Exchange (ETDEWEB)

    Kronz, A. [IDS Scheer AG, Saarbruecken (Germany); Ramler, K. [Eon Kernkraft GmbH (Germany). Kernkraftwerk Unterweser; Renner, A. [Horvath und Partner GmbH (Germany)

    2002-07-01

    Collecting and analysing of process oriented performance indicators is a prerequisite to a comprehensive process management. In order to realize continuous process optimization, performance gaps within the processes of companies are being detected. Thus, an adequate IT-solution like ARIS-Process Performance Manager is needed. The following presents the results of a project at the nuclear power plant Eon Kernkraftwerk Unterweser, which was carried out by Horvath and Partners and IDS Scheer. (orig.) [German] Die Erhebung und Analyse leistungsbezogener Prozesskennzahlen ist Voraussetzung fuer ein ganzheitliches Prozessmanagement. Nur so laesst sich eine durchgaengige und kontinuierliche Prozessoptimierung realisieren. Zudem werden Schwachstellen in Unternehmensprozessen aufgedeckt. Voraussetzung ist eine geeignete IT-Loesung wie der Aris-Process-Performance-Manager. Vorgestellt werden die Ergebnisse eines von Horvath and Partners und IDS Scheer gemeinsam durchgefuehrten Projekts bei dem Eon-Kernkraftwerk Unterweser. (orig.)

  17. Translation of Device Performance Measurements to Reference Conditions

    Energy Technology Data Exchange (ETDEWEB)

    Osterwald, C. R.

    1986-09-01

    Translation of photovoltaic performance measurements is required when a measurement is made under conditions which are different from those specified in standard measurement procedures. These specifications can be categorized into three areas: the device temperature at the time of measurement; the total incident irradiance level; and the spectral distribution of the incident irradiance. If these three conditions are identical to those specified in the standard measurement procedures, then no translation is required. However, because in practice the standard measurement conditions can be very difficult (and expensive) to achieve, one or more of these three conditions will generally be different and translation is then necessary.

  18. Academic writing performance measured for research and instruction

    NARCIS (Netherlands)

    Firssova, Olga

    2012-01-01

    Firssova, O. (2011, January 19). Academic writing performance measured for research and instruction. Presentation at the ICO Course Domain specific research on learning and instruction: theories, methodology and curricular innovations, Utrecht, The Netherlands: Interuniversitair Centrum voor

  19. Academic writing performance measured for research and instruction

    NARCIS (Netherlands)

    Firssova, Olga

    2012-01-01

    Firssova, O. (2012, 19 January). Academic writing performance measured for research and instruction. Presentation given at the ICO Masterclass, Theme Domain-Specific Instruction, January 19-February 10, Utrecht, The Netherlands.

  20. 76 FR 55619 - Performance Measurement for Special Postal Services

    Science.gov (United States)

    2011-09-08

    ... Commission's reporting rules consistent with the Postal Service's reporting proposals. \\4\\ Letter dated... From the Federal Register Online via the Government Publishing Office POSTAL REGULATORY COMMISSION 39 CFR Part 3055 Performance Measurement for Special Postal Services AGENCY: Postal Regulatory...

  1. Performance measurement of broadband, wide-angle polarizing beam splitter

    Institute of Scientific and Technical Information of China (English)

    CHEN Wei-bin; ZHENG Zhen-rong; GU Pei-fu; ZHANG Yue-guang

    2007-01-01

    Polarizing beam splitter (PBS) is a critical optical component in projection display system because PBS performance greatly influences the contrast and brightness of the system. PBS performance is usually measured by spectrophotometer after coating and cementing, but the measured result cannot represent the actual performance in practice because people usually change the incident angle in one plane (horizontal plane) and do not consider the other plane (vertical plane). Geometrical polarization rotation occurring at reduced F-number influences the measuring precision of s-polarization transmittance (Ts) and p-polarization reflectance (Rp). A more accurate and practical way to measure the performance of broadband, wide-angle PBS is presented in this paper.

  2. Academic writing performance measured for research and instruction

    NARCIS (Netherlands)

    Firssova, Olga

    2012-01-01

    Firssova, O. (2011, January 19). Academic writing performance measured for research and instruction. Presentation at the ICO Course Domain specific research on learning and instruction: theories, methodology and curricular innovations, Utrecht, The Netherlands: Interuniversitair Centrum voor Onderwi

  3. Performance measurement and management control : A compendium of research

    NARCIS (Netherlands)

    Bouwens, J.F.M.G.

    2004-01-01

    Reviews the book "Performance Measurement and Management Control: A Compendium of Research Studies in Managerial and Financial Accounting Series," vol. 12, edited by Marc J. Epstein and Jean-Francois Manzoni.

  4. Academic writing performance measured for research and instruction

    NARCIS (Netherlands)

    Firssova, Olga

    2012-01-01

    Firssova, O. (2011, January 19). Academic writing performance measured for research and instruction. Presentation at the ICO Course Domain specific research on learning and instruction: theories, methodology and curricular innovations, Utrecht, The Netherlands: Interuniversitair Centrum voor Onderwi

  5. Academic writing performance measured for research and instruction

    OpenAIRE

    Firssova, Olga

    2012-01-01

    Firssova, O. (2011, January 19). Academic writing performance measured for research and instruction. Presentation at the ICO Course Domain specific research on learning and instruction: theories, methodology and curricular innovations, Utrecht, The Netherlands: Interuniversitair Centrum voor Onderwijswetenschappen.

  6. Academic writing performance measured for research and instruction

    NARCIS (Netherlands)

    Firssova, Olga

    2012-01-01

    Firssova, O. (2012, 19 January). Academic writing performance measured for research and instruction. Presentation given at the ICO Masterclass, Theme Domain-Specific Instruction, January 19-February 10, Utrecht, The Netherlands.

  7. Procurement performance measurement system in the health care industry.

    Science.gov (United States)

    Kumar, Arun; Ozdamar, Linet; Ng, Chai Peng

    2005-01-01

    The rising operating cost of providing healthcare is of concern to health care providers. As such, measurement of procurement performance will enable competitive advantage and provide a framework for continuous improvement. The objective of this paper is to develop a procurement performance measurement system. The paper reviews the existing literature in procurement performance measurement to identify the key areas of purchasing performance. By studying the three components in the supply chain collectively with the resources, procedures and output, a model is been developed. Additionally, a balanced scorecard is proposed by establishing a set of generic measures and six perspectives. A case study conducted at the Singapore Hospital applies the conceptual model to describe the purchasing department and the activities within and outside the department. The results indicate that the material management department has already made a good start in measuring the procurement process through the implementation of the balanced scorecard. There are many data that are collected but not properly collated and utilized. Areas lacking measurement include cycle time of delivery, order processing time, effectiveness, efficiency and reliability. Though a lot of hard work was involved, the advantages of establishing a measurement system outweigh the costs and efforts involved in its implementation. Results of balanced scorecard measurements provide decision-makers with critical information on efficiency and effectiveness of the purchasing department's work. The measurement model developed could be used for any hospital procurement system.

  8. The effectiveness of performance measuring in Slovenian public libraries

    Directory of Open Access Journals (Sweden)

    Silva Novljan

    1997-01-01

    Full Text Available The article describes methods of performance measuring in Slovenian public libraries, and calls attention to the problems attached to it. The argued presumption is that the performance measuring carried out on the state level, is not always a sufficient and adequate foundation for plarming of the developmenl and functioning of an individual library which has to cater for the needs and wishes of the population in a certain area.

  9. An analytical review of hospital financial performance measures.

    Science.gov (United States)

    Glandon, G L; Counte, M; Holloman, K; Kowalczyk, J

    1987-11-01

    Hospital administrators must have timely, valid, and interpretable financial information that allows them to make operational decisions in response to the threats of the changing health care environment. Aggregate indexes that reflect dimensions of hospital financial performance and simplify the information in financial ratios are needed to aid in decision making. This article reviews the development and use of hospital financial performance measures and lays the groundwork for research into deriving a multidimensional measure.

  10. How Firms in Turbulent Environments Measure Strategic Performance

    OpenAIRE

    Barrows, Edward

    2014-01-01

    This thesis presents the findings from two case study examinations of strategic performance measurement systems within two turbulent environmental contexts: the U.S. security software industry and the U.S. health care industry. Despite a three-­‐decade emphasis on performance measurement research, little empirical work has been carried out inside turbulent settings—contexts characterized by rapid change, high levels of instability and complex configurations among environmental variables. T...

  11. A Comparison of Performance Measures via Online Search

    CERN Document Server

    Boyar, Joan; Maiti, Abyayananda

    2011-01-01

    Though competitive analysis has been a very useful performance measure for the quality of online algorithms, it is recognized that it sometimes fails to distinguish between algorithms of different quality in practice. A number of alternative measures have been proposed, but, with a few exceptions, these have generally been applied only to the online problem they were developed in connection with. Recently, a systematic study of performance measures for online algorithms was initiated [Boyar, Irani, Larsen: Eleventh International Algorithms and Data Structures Symposium 2009], first focusing on a simple server problem. We continue this work by studying a fundamentally different online problem, online search, and the Reservation Price Policies in particular. The purpose of this line of work is to learn more about the applicability of various performance measures in different situations and the properties that the different measures emphasize. We investigate the following analysis techniques: Competitive, Relati...

  12. From Performance Measurement to Strategic Management Model: Balanced Scorecard

    Directory of Open Access Journals (Sweden)

    Cihat Savsar

    2015-03-01

    Full Text Available Abstract: In Today’s competitive markets, one of the main conditions of the surviving of enterprises is the necessity to have effective performance management systems. Decisions must be taken by the management according to the performance of assets. In the transition from industrial society to information society, the presence of business structures have changed and the values of non-financial assets have increased in this period. So some systems have emerged based on intangible assets and to measure them instead of tangible assets and their measurements. With economic and technological development multi-dimensional evaluation in the business couldn’t be sufficient.  Performance evaluation methods can be applied in business with an integrated approach by its accordance with business strategy, linking to reward system and cause effects link established between performance measures. Balanced scorecard is one of the commonly used in measurement methods. While it was used for the first time in 1992 as a performance measurement tool today it has been used as a strategic management model besides its conventional uses. BSC contains customer perspective, internal perspective and learning and growth perspective besides financial perspective. Learning and growth perspective is determinant of other perspectives. In order to achieve the objectives set out in the financial perspective in other dimensions that need to be accomplished, is emphasized. Establishing a causal link between performance measures and targets how to achieve specified goals with strategy maps are described.

  13. Governing healthcare through performance measurement in Massachusetts and the Netherlands.

    Science.gov (United States)

    Van der Wees, Philip J; Nijhuis-van der Sanden, Maria W G; van Ginneken, Ewout; Ayanian, John Z; Schneider, Eric C; Westert, Gert P

    2014-05-01

    Massachusetts and the Netherlands have implemented comprehensive health reforms, which have heightened the importance of performance measurement. The performance measures addressing access to health care and patient experience are similar in the two jurisdictions, but measures of processes and outcomes of care differ considerably. In both jurisdictions, the use of health outcomes to compare the quality of health care organizations is limited, and specific information about costs is lacking. New legislation in both jurisdictions led to the establishment of public agencies to monitor the quality of care, similar mandates to make the performance of health care providers transparent, and to establish a shared responsibility of providers, consumers and insurers to improve the quality of health care. In Massachusetts a statewide mandatory quality measure set was established to monitor the quality of care. The Netherlands is stimulating development of performance measures by providers based on a mandatory framework for developing such measures. Both jurisdictions are expanding the use of patient-reported outcomes to support patient care, quality improvement, and performance comparisons with the aim of explicitly linking performance to new payment incentives. Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.

  14. [Development of performance measure indicators in hospital nursing units].

    Science.gov (United States)

    Kang, Kyeong-Hwa; Kim, In-Sook

    2005-06-01

    The purpose of this study was to develop performance measure indicators for hospital nursing units based on a Balanced Scorecard (BSC). This study was a methodological study. The development process consisted of 3 stages. The first stage was setting up strategies for nursing units from a nursing department's mission and vision. The second stage was developing performance measure indicators after a validity check. The third stage was modifying developed performance measure indicators and classifying them. 7 strategies were set up according to 4 perspectives of a BSC. 15 performance measure indicators for hospital nursing units were developed, and the indicators were divided into 8 independent indicators and 7 shared indicators according to the degree of performance responsibility. In addition, they were classified into two groups, 7 leading indicators and lagging indicators. The result of this study suggests that performance measure indicators for hospital nursing units provide a framework and method for nursing organizations' performance management. Also, the developed indicators are expected to provide valuable information for successful organization management.

  15. Chinese Middle School Teachers' Preferences Regarding Performance Evaluation Measures

    Science.gov (United States)

    Liu, Shujie; Xu, Xianxuan; Stronge, James H.

    2016-01-01

    Teacher performance evaluation currently is receiving unprecedented attention from policy makers, scholars, and practitioners worldwide. This study is one of the few studies of teacher perceptions regarding teacher performance measures that focus on China. We employed a quantitative dominant mixed research design to investigate Chinese teachers'…

  16. Inmate Recidivism as a Measure of Private Prison Performance

    Science.gov (United States)

    Spivak, Andrew L.; Sharp, Susan F.

    2008-01-01

    The growth of the private corrections industry has elicited interest in the comparative performance of state and private prisons. One way to measure the service quality of private prisons is to examine inmates' postrelease performance. Current empirical evidence is limited to four studies, all conducted in Florida. This analysis replicates and…

  17. Job Performance Measurement System Trainer’s Manual.

    Science.gov (United States)

    1987-09-01

    When assessing the job proficiency of individuals, it is essential that evaluators receive training to increase the accuracy of their ratings. A job ... performance measurement system trainer’s manual was developed for use in training Walk-Through Performance Testing test administrators and raters

  18. Inmate Recidivism as a Measure of Private Prison Performance

    Science.gov (United States)

    Spivak, Andrew L.; Sharp, Susan F.

    2008-01-01

    The growth of the private corrections industry has elicited interest in the comparative performance of state and private prisons. One way to measure the service quality of private prisons is to examine inmates' postrelease performance. Current empirical evidence is limited to four studies, all conducted in Florida. This analysis replicates and…

  19. Performance measurement of workplace change in two different cultural contexts

    NARCIS (Netherlands)

    Riratanaphong, C.

    2014-01-01

    There is a growing need for performance management and performance measurement that not only covers all aspects of an organisation, but which can be applied to various situations in a changing internal and external environment. The changing organisational and external contexts, such as the increasi

  20. gLite Workload Management System Performance Measurements

    CERN Document Server

    Svraka, N; Belic, A; Bogojevic, A R

    2006-01-01

    In this paper an introduction to the gLite Grid middleware and one of its most important components, Workload Management System (WMS), responsible for management of user jobs is given.Useful performance metrics of gLite WMS are defined from a Grid application point of view, and preliminary results of performance measurements are presented and briefly analyzed.

  1. Methodological issues in measuring innovation performance of spatial units

    NARCIS (Netherlands)

    Brenner, T.; Broekel, T.

    2011-01-01

    The innovation performance of regions or nations has been repeatedly measured in the literature. What is missing, however, is a discussion of what innovation performance of a region or nation means. How do regions or nations exactly contribute to the innovation output of firms? And how can this cont

  2. Performance measurement of workplace change in two different cultural contexts

    NARCIS (Netherlands)

    Riratanaphong, C.

    2014-01-01

    There is a growing need for performance management and performance measurement that not only covers all aspects of an organisation, but which can be applied to various situations in a changing internal and external environment. The changing organisational and external contexts, such as the

  3. Architecture School Performance Predicted from ASAT, Intellective and Nonintellective Measures.

    Science.gov (United States)

    Lunneborg, Clifford E.; Lunneborg, Patricia W.

    This study is part of a continuing search for measures of divergent thinking and for better predictors of performance in occupational areas depending on such ways of thinking. Traditional predictors of college performance, i.e., high school GPA and tests of verbal and quantitative aptitude have always worked much better estimating success in…

  4. Methodological issues in measuring innovation performance of spatial units

    NARCIS (Netherlands)

    Brenner, T.; Broekel, T.

    2011-01-01

    The innovation performance of regions or nations has been repeatedly measured in the literature. What is missing, however, is a discussion of what innovation performance of a region or nation means. How do regions or nations exactly contribute to the innovation output of firms? And how can this cont

  5. The impact of multi-criteria performance measurement on business performance improvement

    Directory of Open Access Journals (Sweden)

    Fentahun Moges Kasie

    2013-06-01

    Full Text Available Purpose: The purpose of this paper is to investigate the relationship between multi-criteria performance measurement (MCPM practice and business performance improvement using the raw data collected from 33 selected manufacturing companies. In addition, it proposes modified MCPM model as an effective approach to improve business performance of manufacturing companies. Design/methodology/approach:Research paper. Primary and secondary data were collected using questionnaire survey, interview and observation of records. The methodology is to evaluate business performances of sampled manufacturing companies and the extent of utilization of crucial non-financial (lagging and non-financial (leading performance measures. The positive correlation between financial business performance and practice of MCPM is clearly shown using Pearson’s correlation coefficient analysis. Findings –This research paper indicates that companies which measure their performance using important financial and non-financial measures achieve better business performance. Even though certain companies are currently using non-financial measures, the researchers have learned that these financial measures were not integrated with each other, financial measures and strategic objectives. Research limitations/implications: The limitation of this paper is that the number of surveyed companies is small to make generalization and they are found in a single country. Further researches which incorporate a large number of companies from various developing nations are suggested to minimize the limitation of this research.Practical Implication: The paper shows that multi-dimensional performance measures with the inclusion of key leading indicator are essential to predict the future environment. But cost-accounting based financial measures are inadequate to do so. These are shown practically using Pearson’s correlation coefficient analysis. Originality/value: The significance of multi

  6. Measuring User Performance during Interactions with Digital Video Collections.

    Science.gov (United States)

    Yang, Meng; Wildemuth, Barbara M.; Marchionini, Gary; Wilkens, Todd; Geisler, Gary; Hughes, Anthony; Gruss, Richard; Webster, Curtis

    2003-01-01

    Proposes two general classes of user tasks-recognition tasks and tasks requiring inference-for which performance measures were developed. The measures include graphical object recognition, textual object recognition, action recognition, free-text gist determination, multiple-choice gist determination and visual gist determination. Results from two…

  7. Measuring and Reporting Physician's Performance in a University Medical Center.

    Science.gov (United States)

    Kazan-Fishman, Ana Lucia

    This paper describes a Patient Satisfaction survey and database used to measure and report on physician performance at the Ohio State University Health System (OSUHS). The OSUHS averages 6,000 inpatients in any given month, and more than 7,000 emergency patients and 70,000 outpatient encounters. Data from the Patient Satisfaction measures are…

  8. Adding Shareholder Value through Project Performance Measurement, Monitoring & Control

    NARCIS (Netherlands)

    M.M. Akalu; J.R. Turner (Rodney)

    2002-01-01

    textabstractWe present the various views and methods of measuring and controlling project performance, and factors affecting a project. The review indicates that there is a shift in the type and understanding of factors of project success or failure. However, the presence of various measurement meth

  9. Modern Measurement Information Graphics for Understanding Student Performance Differences

    Science.gov (United States)

    Rittschof, Kent; Chambers, Wendy

    2011-01-01

    We present an example analysis and corresponding information graphics of data from a cognitive ability assessment as a means to illustrate the use of a Rasch measurement approach and advantages inherent in such an approach for a wide variety of teaching and learning investigations. The importance of placing measurements of student performances and…

  10. MEASURING DRIVING PERFORMANCE BY CAR-FOLLOWING IN TRAFFIC

    NARCIS (Netherlands)

    BROOKHUIS, K; DEWAARD, D; MULDER, Lambertus J.M.

    1994-01-01

    The measurement of impairing effects on driving performance by such external factors as alcohol, medicinal drugs, or mobile telephoning, etc., is extended with a new test. Most existing methods of measuring impairing effects in the actual driving environment have the drawback that, irrespective of h

  11. 26 CFR 801.2 - Measuring organizational performance.

    Science.gov (United States)

    2010-04-01

    ... Stat. 2838). Thus, organizational measures of customer satisfaction, employee satisfaction, and... 26 Internal Revenue 20 2010-04-01 2010-04-01 false Measuring organizational performance. 801.2 Section 801.2 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED)...

  12. 26 CFR 801.3 - Measuring employee performance.

    Science.gov (United States)

    2010-04-01

    ..., will be composed of elements that support the organizational measures of Customer Satisfaction, Employee Satisfaction, and Business Results; however, such organizational measures will not directly... each employee related to the work of the employee and expressed in terms of individual performance; (2...

  13. Canadian Occupational Performance Measure performance scale : Validity and responsiveness in chronic pain

    NARCIS (Netherlands)

    Nieuwenhuizen, Mieke G.; de Groot, Sonja; Janssen, Thomas W. J.; van der Maas, Lia C. C.; Beckerman, Heleen

    2014-01-01

    The construct validity and construct responsiveness of the performance scale of the Canadian Occupational Performance Measure (COPM) was measured in 87 newly admitted patients with chronic pain attending an outpatient rehabilitation clinic. At admission and after 12 wk, patients completed a COPM

  14. Canadian Occupational Performance Measure performance scale : Validity and responsiveness in chronic pain

    NARCIS (Netherlands)

    Nieuwenhuizen, Mieke G.; de Groot, Sonja; Janssen, Thomas W. J.; van der Maas, Lia C. C.; Beckerman, Heleen

    2014-01-01

    The construct validity and construct responsiveness of the performance scale of the Canadian Occupational Performance Measure (COPM) was measured in 87 newly admitted patients with chronic pain attending an outpatient rehabilitation clinic. At admission and after 12 wk, patients completed a COPM int

  15. English Value-Added Measures: Examining the Limitations of School Performance Measurement

    Science.gov (United States)

    Perry, Thomas

    2016-01-01

    Value-added "Progress" measures are to be introduced for all English schools in 2016 as "headline" measures of school performance. This move comes despite research highlighting high levels of instability in value-added measures and concerns about the omission of contextual variables in the planned measure. This article studies…

  16. Workflow logs analysis system for enterprise performance measurement

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    Workflow logs that record the execution of business processes offer very valuable data resource for real-time enterprise performance measurement. In this paper, a novel scheme that uses the technology of data warehouse and OLAP to explore workflow logs and create complex analysis reports for enterprise performance measurement is proposed. Three key points of this scheme are studied: 1) the measure set; 2) the open and flexible architecture for workflow logs analysis system; 3) the data models in WFMS and data warehouse. A case study that shows the validity of the scheme is also provided.

  17. Shielding Performance Measurements of Spent Fuel Transportation Container

    Directory of Open Access Journals (Sweden)

    SUN Hong-chao

    2015-11-01

    Full Text Available The safety supervision of radioactive material transportation package has been further stressed and implemented. The shielding performance measurements of spent fuel transport container is the important content of supervision. However, some of the problems and difficulties reflected in practice need to be solved, such as the neutron dose rate on the surface of package is too difficult to measure exactly, the monitoring results are not always reliable, etc. The monitoring results using different spectrometers were compared and the simulation results of MCNP runs were considered. An improvement was provided to the shielding performance measurements technique and management of spent fuel transport.

  18. Patient expectations and performance measures in dermatologic surgery.

    Science.gov (United States)

    Lee, Erica H

    2016-01-01

    Patient satisfaction has increasingly played an important role in quality-of-care reforms and health care delivery. In dermatologic surgery, patient expectations of procedures and the outcomes are important determinants of satisfaction. Identification of the patient's met and unmet expectations through patient-reported outcome measures may enable a better understanding of the patient's perspective and improve communication and the delivery of care. Performance measures report on the quality of care being delivered. Performance measures currently being implemented into dermatologic practices may have a role in demonstrating the "quality" of dermatologic surgery procedures in the near future. Copyright © 2016 Elsevier Inc. All rights reserved.

  19. The performance measurement-management divide in public health.

    Science.gov (United States)

    Schwartz, Robert; Deber, Raisa

    2016-03-01

    What happens when performance measurement and management (PMM) is applied to public health systems? This review of the experiences of high-income jurisdictions reveals considerable challenges, some familiar from the general public management literature and some more unique to public health. To aid understanding, the PMM ladder, a framework for evaluating PMM systems is developed and applied to 55 public health measurement systems from Australia, Canada, EU, New Zealand, UK and US. Results indicate that: considerable measurement is occurring for informational purposes; measurement focuses more on clinical than on population health measures; and there is relatively little use of measurement results for improving management. Results demonstrate that much public health performance measurement is restricted to population health outcomes and fails to include more proximate activity and output measures that would be more useful for managing public health organizations. There are early signs of the emergence of a new breed of public health performance measurement that attempts to do just this. The PMM ladder proved useful for assessing efforts across a range of jurisdictions. It allows policymakers and managers to easily compare their PMM efforts with others and assists researchers in assessing what happens when PMM is applied to public health.

  20. On wind turbine power performance measurements at inclined airflow

    Science.gov (United States)

    Pedersen, T. F.

    2004-07-01

    The average airflow inclination in complex terrain may be substantial. The airflow inclination affects wind turbine performance and also affects the cup anemometer being used in power performance measurements. In this article the overall dependence of the power curve on inclined airflow is analysed for its influence on both the wind turbine and the cup anemometer. The wind turbine performance analysis is based on results of measurements and theoretical calculations with the aeroelastic code HAWC coupled to a 3D actuator disc model for varying yaw angle. The cup anemometer analysis at inclined flow is based on an averaging of measured angular characteristics in a wind tunnel with the distribution of airflow inclination angles over time. The relative difference in annual energy production in terrain with inclined airflow compared with flat terrain is simulated for cup anemometers with theoretical optimal angular characteristics for two different definitions of wind speed, as well as for five commercial cup anemometers with measured angular characteristics. Copyright

  1. Performance measurement and modeling of component applications in a high performance computing environment : a case study.

    Energy Technology Data Exchange (ETDEWEB)

    Armstrong, Robert C.; Ray, Jaideep; Malony, A. (University of Oregon, Eugene, OR); Shende, Sameer (University of Oregon, Eugene, OR); Trebon, Nicholas D.

    2003-11-01

    We present a case study of performance measurement and modeling of a CCA (Common Component Architecture) component-based application in a high performance computing environment. We explore issues peculiar to component-based HPC applications and propose a performance measurement infrastructure for HPC based loosely on recent work done for Grid environments. A prototypical implementation of the infrastructure is used to collect data for a three components in a scientific application and construct performance models for two of them. Both computational and message-passing performance are addressed.

  2. The use of performance measurement systems in the public sector: effects on performance

    NARCIS (Netherlands)

    Speklé, R.; Verbeeten, F.H.M.

    2014-01-01

    We study the use of performance measurement systems in the public sector. We hypothesize that the way in which these systems are being used affects organizational performance, and that these performance effects depend on contractibility. Contractibility encompasses clarity of goals, the ability to

  3. The use of performance measurement systems in the public sector : Effects on performance

    NARCIS (Netherlands)

    Speklé, R.F.; Verbeeten, F.H.M.

    2014-01-01

    We study the use of performance measurement systems in the public sector. We hypothesize that the way in which these systems are being used affects organizational performance, and that these performance effects depend on contractibility. Contractibility encompasses clarity of goals, the ability to

  4. Measurement properties of performance-based measures to assess physical function in hip and knee osteoarthritis

    DEFF Research Database (Denmark)

    Dobson, F; Hinman, R S; Hall, M

    2012-01-01

    OBJECTIVES: To systematically review the measurement properties of performance-based measures to assess physical function in people with hip and/or knee osteoarthritis (OA). METHODS: Electronic searches were performed in MEDLINE, CINAHL, Embase, and PsycINFO up to the end of June 2012. Two...

  5. The Development of NOAA Education Common Outcome Performance Measures (Invited)

    Science.gov (United States)

    Baek, J.

    2013-12-01

    The National Oceanic and Atmospheric Administration (NOAA) Education Council has embarked on an ambitious Monitoring and Evaluation (M&E) project that will allow it to assess education program outcomes and impacts across the agency, line offices, and programs. The purpose of this internal effort is to link outcome measures to program efforts and to evaluate the success of the agency's education programs in meeting the strategic goals. Using an outcome-based evaluation approach, the NOAA Education Council is developing two sets of common outcome performance measures, environmental stewardship and professional development. This presentation will examine the benefits and tradeoffs of common outcome performance measures that collect program results across a portfolio of education programs focused on common outcomes. Common outcome performance measures have a few benefits to our agency and to the climate education field at large. The primary benefit is shared understanding, which comes from our process for writing common outcome performance measures. Without a shared and agreed upon set of definitions for the measure of an outcome, the reported results may not be measuring the same things and would incorrectly indicate levels of performance. Therefore, our writing process relies on a commitment to developing a shared set of definitions based on consensus. We hope that by taking the time to debate and coming to agreement across a diverse set of programs, the strength of our common measures can indicate real progress towards outcomes we care about. An additional benefit is that these common measures can be adopted and adapted by other agencies and organizations that share similar theories of change. The measures are not without their drawbacks, and we do make tradeoffs as part of our process in order to continue making progress. We know that any measure is necessarily a narrow slice of performance. A slice that may not best represent the unique and remarkable contribution

  6. Performance measures of cultural competency in mental health organizations.

    Science.gov (United States)

    Siegel, C; Davis-Chambers, E; Haugland, G; Bank, R; Aponte, C; McCombs, H

    2000-11-01

    The authors utilized numerous documents created by advisory groups, expert panels and multicultural focus groups to develop performance measures for assessing the cultural competency of mental health systems. Competency was measured within three levels of organizational structure: administrative, provider network, and individual caregiver. Indicators, measures and data sources for needs assessment, information exchange, services, human resources, plans and policies, and outcomes were identified. Procedures for selection and implementation of the most critical measures are suggested. The products of this project are broadly applicable to the concerns of all cultural groups.

  7. Library Network Statistics and Performance Measures: Approaches and Issues

    Directory of Open Access Journals (Sweden)

    John Carlo Bertot

    2001-07-01

    Full Text Available Library networked statistics and performance measures are important indicators of the use, uses, and users of networked services that libraries offer their patrons. This article focuses on three efforts to develop and standardize library network statistics and performance measures. In particular, the article discusses, compares, and contrasts selected aspects of the International Standards Organization (ISO, U.S. public library network statistics, and Association of Research Library (ARL efforts. The three approaches attempt to capture, describe, and present library networked activities in similar ways through similar approaches – yet they differ in key areas. It is important to note that there are a number of national and international efforts underway that continue to research the library network statistics and performance measure environment.

  8. Developing a performance measurement system for public research centres

    Directory of Open Access Journals (Sweden)

    Masella, C.

    2012-01-01

    Full Text Available This study aims at developing a performance measurement system (PMS for research and development (R&D activities carried out by public research centres. Public research institutions are characterized by multiple stakeholders with different needs, and the management of R&D activities requires balancing the multiple goals of different stakeholders. This characteristic is a key issue in the process of construction of the PMS. Empirical evidence is provided by an Italian public research centre, where the researchers carried out a project aimed to develop a PMS following action research principles. This project gave the possibility to researchers to interact with different stakeholders and integrate their different information needs in a comprehensive set of key performance indicators (KPIs. As a result, multidimensional framework for measuring R&D performance in a public research centre is proposed and a set of Key Performance Indicators is developed, suggesting implications for academics and practitioners.

  9. Crankshaft position measurement with applications to ignition timing, diagnostics and performance measurement

    Energy Technology Data Exchange (ETDEWEB)

    Dong, Y.; Rizzoni, G.; Ribbens, W.B.

    1987-01-01

    This paper introduces a high accuracy method of measuring crankshaft angular position of an internal combustion engine. The method uses a sensor which couples magnetically to the starter ring gear. There are may automotive applications of this measurement of crankshaft angular position including ignition timing reference, engine performance measurement and certain diagnostic functions. The present paper discusses only the ignition timing application.

  10. Measurements of library performance and study of librarianship

    Directory of Open Access Journals (Sweden)

    Matjaž Žaucer

    1998-01-01

    Full Text Available The article presents the significance of evaluation and measurement of library performance. The measurement of the medium tirne of document delivery from closed stacks in one library according to the methodology of standard ISO 11620 is described. Further, the significance of creative problem solving in libraries in transition in the light of fast technological development is presented, followed by cases of used opportunities from foreign libraries. In the conclusion, the link between time measurements of library performance and creative problemsolving in the frames of seminar papers of students of librarianship is presented. The results of the measurements of the medium time of document search in open access are presented together with the analysis of the state of affairs and some students' suggestions for improvements.

  11. Comparative performance of color-measuring instruments; second report.

    Science.gov (United States)

    Billmeyer, F W; Campbell, E D; Marcus, R T

    1974-06-01

    The comparative performance of twelve different late-model color-measuring instruments was studied for precision (short-term repeatability) and conformance of color measurement and color-difference measurement.The instruments tested included four true and two abridged spectrophotometers and six colorimeters, all being integrating-sphere instruments except three 45 degrees /0 degrees colorimeters. All the colorimeters were individually calibrated for close conformance to CIE coordinates. Forty-four samples taken from the group studied in the previous paper were measured three times on each instrument, by three different well-trained operators. Again, a GE spectrophotometer was considered the reference instrument for conformance studies. Overall, the GE spectrophotometer, the Hunterlab D25D colorimeter, and the Kollmorgen KCS-18 and KCS-40 abridged spectrophotometers demonstrated the best performance. Statistical treatment of the data has been improved vastly since the earlier paper, and some recalculated results are included.

  12. Comparison of Laboratory Measurements for IR Imaging System Performance

    Institute of Scientific and Technical Information of China (English)

    LI Sheng-cai; XU Zong-chang; XIAO Shun-wang

    2005-01-01

    Sensitivity and human performance are two important parameters for IR imaging system. Noise equivalent temperature difference (NETD) and minimum resolvable temperature difference (MRTD) can describe sensitivity and human performance of IR imaging system. So a lot of engineers apply themselves to studying the methods to measure NETD and MRTD for IR imaging system. The classical laboratory measurement methodologies for NETD and MRTD are introduced. And, two new approaches to three-dimensional (3-D) noise and MRTD/MRC are also portrayed, which can overcome some of the disadvantages existed in classical testing of NETD and MRTD. With the help of the new laboratory measurements, the disadvantages of the classical methods to measure NETD and MRTD can be solved.

  13. Measuring business performance using indicators of ecologically sustainable organizations

    Science.gov (United States)

    Snow, Charles G., Jr.; Snow, Charles C.

    2001-02-01

    The purpose of this paper is to explore the use of ecology-based performance measures as a way of augmenting the Balanced Scorecard approach to organizational performance measurement. The Balanced Scorecard, as proposed by Kaplan and Norton, focuses on four primary dimensions; financial, internal-business-process, customer, and learning and growth perspectives. Recently, many 'green' organizational theorists have developed the concept of "Ecologically Sustainable Organizations" or ESOs, a concept rooted in open systems theory. The ESO is called upon to consider resource use and conservation as a strategy for long-term viability. This paper asserts that in order to achieve ESO status, an organization must not only measure but also reward resource conservation measures. Only by adding a fifth perspective for ecological dimensions will the entity be truly motivated toward ESO status.

  14. A Measurement Study of BGP Blackhole Routing Performance

    Science.gov (United States)

    2006-09-01

    STUDY OF BGP BLACKHOLE ROUTING PERFORMANCE by Nikolaos Stamatelatos September 2006 Thesis Advisor: Geoffrey Xie Second Reader: J. D. Fulp...September 2006 3. REPORT TYPE AND DATES COVERED Master’s Thesis 4. TITLE AND SUBTITLE A Measurement Study of BGP Blackhole Routing Performance 6...distribution is unlimited 12b. DISTRIBUTION CODE 13. ABSTRACT (maximum 200 words) BGP Blackhole routing is a mechanism used to protect networks from DDoS

  15. Towards Effective Educational Politics through Improving the Performance Measurement System

    Directory of Open Access Journals (Sweden)

    Tuuli Reisberg

    2013-01-01

    Full Text Available Educational field is impelled to increase performance and quality, financial discipline, strategic behaviour and its goals in order to enhance “effectiveness”. As a result the incorporation of private sector management practices into the educational field is taking place. But it is important to notice that a proliferation of private managerial practices into the educational field goes along with a conflict-laden and contradictory process. Education provides an important area of implementation for techniques of performance evaluation aimed at improving the performance of public services. One of the most common conceptual frameworks in measuring organisational performance takes the form of a production function where the educational institution is seen as analogous to a company transforming inputs into outputs and outcomes through a production process. But the problems and the vagueness in determining educational system’s inputs, outputs and outcomes cause difficulties in making political decisions and that is why clear policy prescriptions have been difficult to derive. The purpose of this article is to create a discussion whether performance measurement should be a part of decision-making in educational politics. The authors debate about incorporating private sector management practices into the educational field. The debate is based on the example of evaluating the social impact in the educational field and the performance of teachers’ work in the educational system. The article consists of three parts. Firstly, the theoretical background of the performance measurement in educational field is discussed. Secondly, the important criteria for performance measurement design and political issues are argued. Thirdly, the evaluated shortcomings in Estonian educational organisations, which restrict them to be effective, are brought out. Relieving some of these shortcomings could be in authority of Estonian educational politics.

  16. Scorecards, dashboards, and KPIs keys to integrated performance measurement.

    Science.gov (United States)

    Wyatt, Jamie

    2004-02-01

    Many providers are using a balanced scorecard to measure performance. Another tool that can be used with the balanced scorecard is a visual dashboard. Visual dashboards can help managers easily access and analyze their key performance indicators (KPIs), saving time and confusion. The experience of St. Luke's Episcopal Health System shows that successful application of a balanced scorecard requires integrating information and using the visual dashboards to provide immediate organizationwide access to KPIs.

  17. Measurements for the Performance of the Digital Autocorrelation Spectrometer

    Institute of Scientific and Technical Information of China (English)

    Fa-Chun Lu; Jarken Esimbek; Jian-Jun Zhou; Xing-Wu Zheng

    2007-01-01

    Injecting phase calibration (PCAL) signals to the feed horn of the observation system and analyzing the output response signals of the spectrometer, we measured the working performance of a 4096-channel digital autocalibration spectrometer. The results demonstrate that the spectrometer has a fine working performance: (1) the channels are distributed uniformly in the spectrometer; (2) line drift produces little effect on the observation results; (3)spectral resolution shows little changes with observation time. The distribution of the frequency resolution in an 80 MHz bandwidth was measured. A trial observation on the two molecular spectral lines of H2CO and H 110α taken with this spectrometer is described.

  18. Towards Performance Measurement And Metrics Based Analysis of PLA Applications

    CERN Document Server

    Ahmed, Zeeshan

    2010-01-01

    This article is about a measurement analysis based approach to help software practitioners in managing the additional level complexities and variabilities in software product line applications. The architecture of the proposed approach i.e. ZAC is designed and implemented to perform preprocessesed source code analysis, calculate traditional and product line metrics and visualize results in two and three dimensional diagrams. Experiments using real time data sets are performed which concluded with the results that the ZAC can be very helpful for the software practitioners in understanding the overall structure and complexity of product line applications. Moreover the obtained results prove strong positive correlation between calculated traditional and product line measures.

  19. Performance measurement of electricity suppliers using PROMETHEE and balance scorecard

    Directory of Open Access Journals (Sweden)

    Mona Osati

    2016-06-01

    Full Text Available Performance measurement in energy industry plays an important role on increasing the productivity. Electricity is also among the most essential components of energy in mega cities like Tehran. The lack of a good service in this city may result unpleasant consequences on most civilians who live in this city. This paper presents an empirical investigation to measure the performance of six major electricity contractors in city of Tehran, Iran. The study implements grey numbers to handle any uncertainty associated with numbers. The study has also adopted four main perspectives used in balanced scorecard as part of PROMETHEE method to rank different contractors.

  20. Exploratory study on performance measures as indicators of IS effectiveness

    Science.gov (United States)

    Bishop, Peter C.; Yoes, Cissy

    1992-01-01

    The Information Systems Directorate at JSC/NASA has undertaken the reevaluation of its performance measures process and measures. Under the direction of a quality approach it is essential to identify an external perspective of how well an organization is performing. This study was conducted with two major objectives: (1) survey and summarize the academic literature on performance measures as indicators of information systems (IS) effectiveness; and (2) survey organizations for their experience in measuring for IS effectiveness. Four approaches to measuring the effectiveness of IS performance were identified: (1) listen to the customer for the things they need; (2) align with corporate goals; (3) benchmark against well-respected organizations; and (4) ask yourself what critical factors lead to success. The list of known methods for soliciting customer feedback are as follows: (1) executive visit; (2) survey, interview, and focus group; (3) complaints and compliments; and (4) service level agreements. A common set of characteristics that satisfy customers was identified from the literature. The list includes elements such as the following: accuracy, timeliness, relevance, understandability, reliability, and completeness. Future research in this topic area should prove beneficial to determine the metrics for external validity.

  1. Towards an Improved Performance Measure for Language Models

    CERN Document Server

    Ueberla, J P

    1997-01-01

    In this paper a first attempt at deriving an improved performance measure for language models, the probability ratio measure (PRM) is described. In a proof of concept experiment, it is shown that PRM correlates better with recognition accuracy and can lead to better recognition results when used as the optimisation criterion of a clustering algorithm. Inspite of the approximations and limitations of this preliminary work, the results are very encouraging and should justify more work along the same lines.

  2. A Framework of Performance Measurement System for Manufacturing Company

    Directory of Open Access Journals (Sweden)

    Dermawan Wibisono

    2011-10-01

    Full Text Available In the current dynamic environment, measuring a company’s performance becomes exceedingly complex since Performance Measurements Systems (PMS not only measure a company’s performance but also reflect their organizational culture and philosophy. Designing and implementing PMS is an integral part of management control systems. However, traditional PMS are criticized for being obsolete, irrelevant to managerial decision making, unrelated to strategic objectives and detrimental to organizational improvements. Given the shortcomings of traditional PMS, there is need for a new framework that can lead to the design of a PMS that balances short-term and long-term measures, internal and external measures, and financial and operational measures. This paper presents issues associated with the needs of a dynamic PMS, observe past research achievements in PMS and review past PMS frameworks that have been introduced. The paper then proposes an improved methodology for the design of a realistic PMS and its effective implementation in a manufacturing environment with case for Indonesia’s company.

  3. Measurement-to-measurement blood pressure variability is related to cognitive performance: the Maine Syracuse study.

    Science.gov (United States)

    Crichton, Georgina E; Elias, Merrill F; Dore, Gregory A; Torres, Rachael V; Robbins, Michael A

    2014-11-01

    The objective was to investigate the association between variability in blood pressure (BP) and cognitive function for sitting, standing, and reclining BP values and variability derived from all 15 measures. In previous studies, only sitting BP values have been examined, and only a few cognitive measures have been used. A secondary objective was to examine associations between BP variability and cognitive performance in hypertensive individuals stratified by treatment success. Cross-sectional analyses were performed on 972 participants of the Maine Syracuse Study for whom 15 serial BP clinic measures (5 sitting, 5 recumbent, and 5 standing) were obtained before testing of cognitive performance. Using all 15 measures, higher variability in systolic and diastolic BP was associated with poorer performance on multiple measures of cognitive performance, independent of demographic factors, cardiovascular risk factors, and pulse pressure. When sitting, reclining, and standing systolic BP values were compared, only variability in standing BP was related to measures of cognitive performance. However, for diastolic BP, variability in all 3 positions was related to cognitive performance. Mean BP values were weaker predictors of cognition. Furthermore, higher overall variability in both systolic and diastolic BP was associated with poorer cognitive performance in unsuccessfully treated hypertensive individuals (with BP ≥140/90 mm Hg), but these associations were not evident in those with controlled hypertension. © 2014 American Heart Association, Inc.

  4. Measured Performance of Residential Dehumidifiers Under Cyclic Operation

    Energy Technology Data Exchange (ETDEWEB)

    Winkler, J. [National Renewable Energy Lab. (NREL), Golden, CO (United States); Christensen, D. [National Renewable Energy Lab. (NREL), Golden, CO (United States); Tomerlin, J. [National Renewable Energy Lab. (NREL), Golden, CO (United States)

    2014-01-01

    Residential construction practices are progressing toward higher levels of energy efficiency. A proven strategy to save energy is to simultaneously increase building insulation levels and reduce outdoor air infiltration. Overall, this strategy results in a shift in the mix of latent and sensible space conditioning loads, requiring proportionally more moisture to be removed compared to standard homes. In this project, researchers at the National Renewable Energy Laboratory (NREL) developed steady state performance maps to predict dehumidifier performance at a variety of indoor conditions. However, installed heating, ventilating, and air-conditioning (HVAC) equipment rarely operates at steady state. Part load performance testing of residential dehumidifiers is not mandated by current test standards. Therefore, the team tested the part load performance of four residential dehumidifiers in NREL’s Advanced HVAC Systems Laboratory . The part load efficiency of each dehumidifier was measured under 13 cycling scenarios, and combined with NREL field data to develop part load fraction (PLF) performance curves under realistic cycling scenarios.

  5. A key performance measures for evaluating cold supply chain performance in farm industry

    Directory of Open Access Journals (Sweden)

    Shashi Shashi

    2015-08-01

    Full Text Available The main objective of this study was to develop a set of measures, evaluate their importance and effect in cold supply chain performance. This investigation reviewed previous research works on all the stages of the farm product supply chain. Based on farm product supply chain, 4 measures with 31 metrics were identified and developed to measure the cold supply chain performance. A survey was organized to establish the importance and the effect of identified measures. The 5 point Likert scale questionnaire was distributed among SC academics and practitioners. The observed finding infers that the measurement instrument was substantiating for evaluating cold supply chain performance in farm industry. The new developed metrics will help firms improve the visibility of supply among partners and in better decision making. The investigation was enfolded up through the plan of direction intended for future study.

  6. Using Radiation Pattern Measurements for Mobile Handset Performance Evaluation

    DEFF Research Database (Denmark)

    Nielsen, Jesper Ødum; Pedersen, Gert Frølund

    2005-01-01

    The mean effective gain (MEG) is an attractive performance measure of mobile handsets, since it incorporates both directional and polarization properties of the handset and environment. In this work the MEG is computed from measured spherical radiation patterns of five different mobile handsets......, both in free space and including a human head & shoulder phantom. Different models of the environment allow a comparison of the MEG obtained for realistic models based on measurements with the total radiated power (TRP) and the total isotropic sensitivity (TIS). All the comparisons are based on the MEG...

  7. Mobile Handset Performance Evaluation Using Radiation Pattern Measurements

    DEFF Research Database (Denmark)

    Nielsen, Jesper Ødum; Pedersen, Gert Frølund

    2006-01-01

    The mean effective gain is an attractive performance measure of mobile handsets, since it incorporates both directional and polarization properties of the handset and environment. In this work the mean effective gain is computed from measured spherical radiation patterns of five different mobile...... handsets, both in free space and including a human head & shoulder phantom. Different models of the environment allow a comparison of the mean effective gain obtained for realistic models based on measurements with the total radiated power and the total isotropic sensitivity. All the comparisons are based...

  8. Performance measurement of workplace change: in two different cultural contexts

    Directory of Open Access Journals (Sweden)

    Chaiwat Riratanaphong

    2014-01-01

    Full Text Available Nowadays, organisations must cope with the pressure of cost reduction and efficiency in order to succeed in a highly competitive business environment. However, drivers to improve social interaction and employee’s performance and as such to contribute to organisational goals and objectives make it necessary to be concerned with other performance criteria as well, such as effectiveness, flexibility, employee satisfaction, productivity and creativity. There is a growing need for performance management and performance measurement that not only covers all aspects of an organisation, but which can be applied to various situations in a changing internal and external environment. Performance measurement methods which include an integrated perspective of performance have become essential. In addition, it has been realised that corporate real estate can contribute to organisational performance (Nourse and Roulac, 1993, De Vries et al., 2008, Lindholm, 2008, Den Heijer, 2011, Jensen et al., 2012. For this reason, worldwide organisations started to implement new ways of working in a more open and flexible work environment. Although there are various objectives and drivers of workplace change, the common objectives are to reduce costs and to increase efficiency. The changing organisational and external contexts, such as the increasing demand for talented knowledge workers and changing work patterns, have led to the development of new offices that can promote social networks and interaction among employees. The new workplace does not only aim at achieving cost efficiency, but it should also support employee satisfaction and productivity.This PhD research focuses on both themes i.e. performance measurement of workplace change. The aim of this research is to provide a conceptual framework that visualises the impact of workplace change on employees’ responses to the new work environment and to present guidelines on performance measurement of workplace change

  9. Performance measures for combat-ready forces in the military

    CSIR Research Space (South Africa)

    Engelbrecht, GN

    2009-09-01

    Full Text Available The development of performance indicators in the military is dependent on the measurability of its associated strategies. Von Clausewitz (1976) argues that nations are either at war or preparing for war. It follows that military forces should have a...

  10. Aims and Formats of performance measurement at Danish Universities

    DEFF Research Database (Denmark)

    Raffnsøe-Møller, Morten

    2011-01-01

    Abstract This article traces the aims and formats of performance measurement of Danish Universities as they originate from the Ministry of Finance’s plan for governance of the public sector. The article further show that the fierce conflicts between central administration and the universities over...

  11. PECULIARITIES OF PERFORMANCE MEASUREMENT IN SOVEREIGN WEALTH FUNDS

    Directory of Open Access Journals (Sweden)

    M. Onopko

    2014-01-01

    Full Text Available Sovereign wealth funds as the subjects of economic relations are analyzed and the main approaches to the assessment of their activities are discussed. The dependence of the performance measurement system and the strategic objectives of the funds and economic policy objectives of the government is indicated.

  12. Performance testing of radiobioassay laboratories: In vivo measurements, Final Report

    Energy Technology Data Exchange (ETDEWEB)

    MacLellan, J.A.; Traub, R.J.; Olsen, P.C.

    1990-04-01

    A study of two rounds of in vivo laboratory performance testing was undertaken by Pacific Northwest Laboratory (PNL) to determine the appropriateness of the in vivo performance criteria of draft American National Standards Institute (ANSI) standard ANSI N13.3, Performance Criteria for Bioassay.'' The draft standard provides guidance to in vivo counting facilities regarding the sensitivity, precision, and accuracy of measurements for certain categories of commonly assayed radionuclides and critical regions of the body. This report concludes the testing program by presenting the results of the Round Two testing. Testing involved two types of measurements: chest counting for radionuclide detection in the lung, and whole body counting for detection of uniformly distributed material. Each type of measurement was further divided into radionuclide categories as defined in the draft standard. The appropriateness of the draft standard criteria by measuring a laboratory's ability to attain them were judged by the results of both round One and Round Two testing. The testing determined that performance criteria are set at attainable levels, and the majority of in vivo monitoring facilities passed the criteria when complete results were submitted. 18 refs., 18 figs., 15 tabs.

  13. How Should We Measure Psychological Resilience in Sport Performers?

    Science.gov (United States)

    Sarkar, Mustafa; Fletcher, David

    2013-01-01

    Psychological resilience is important in sport because athletes must constantly withstand a wide range of pressures to attain and sustain high performance. To advance psychologists' understanding of this area, there exists an urgent need to develop a sport-specific measure of resilience. The purpose of this article is to review psychometric…

  14. How Should We Measure Psychological Resilience in Sport Performers?

    Science.gov (United States)

    Sarkar, Mustafa; Fletcher, David

    2013-01-01

    Psychological resilience is important in sport because athletes must constantly withstand a wide range of pressures to attain and sustain high performance. To advance psychologists' understanding of this area, there exists an urgent need to develop a sport-specific measure of resilience. The purpose of this article is to review psychometric…

  15. Introducing the Balanced Scorecard: Creating Metrics to Measure Performance

    Science.gov (United States)

    Gumbus, Andra

    2005-01-01

    This experiential exercise presents the concept of the Balanced Scorecard (BSC) and applies it in a university setting. The Balanced Scorecard was developed 12 years ago and has grown in popularity and is used by more than 50% of the Fortune 500 companies as a performance measurement and strategic management tool. The BSC expands the traditional…

  16. Developing Benchmarks to Measure Teacher Candidates' Performance

    Science.gov (United States)

    Frazier, Laura Corbin; Brown-Hobbs, Stacy; Palmer, Barbara Martin

    2013-01-01

    This paper traces the development of teacher candidate benchmarks at one liberal arts institution. Begun as a classroom assessment activity over ten years ago, the benchmarks, through collaboration with professional development school partners, now serve as a primary measure of teacher candidates' performance in the final phases of the…

  17. A critical perspective on the measurement of performance in the empirical multinationality and performance literature

    DEFF Research Database (Denmark)

    Richter, Nicole Franziska; Schmidt, Robert; Ladwig, Tina J.

    2017-01-01

    This paper contributes to the core research in international business (IB), namely the relation between multinationality and performance, and is concerned with the quality of past empirical research designs. On the basis of 49 studies, we critically evaluate the match between performance measures...

  18. Proposed system for measuring project performance using process-based key performance indicators

    NARCIS (Netherlands)

    Haponava, T.; Al-Jibouri, Saad H.S.

    2012-01-01

    Despite some evidence of its usefulness, performance measurement by using Key Performance Indicators (KPIs) in the construction industry also has its critics. Among the shortcomings attributed to existing KPIs is the fact that almost all of them are product oriented. This means that the indicators

  19. Proposed system for measuring project performance using process-based key performance indicators

    NARCIS (Netherlands)

    Haponava, T.; Al-jibouri, S.H.S.

    2012-01-01

    Despite some evidence of its usefulness, performance measurement by using Key Performance Indicators (KPIs) in the construction industry also has its critics. Among the shortcomings attributed to existing KPIs is the fact that almost all of them are product oriented. This means that the indicators a

  20. Standard target sets for field sensor performance measurements

    Science.gov (United States)

    O'Connor, John D.; O'Shea, Patrick; Palmer, John E.; Deaver, Dawne M.

    2006-05-01

    The US Army Night Vision and Electronic Sensors Directorate (NVESD) Modeling and Simulation Division develops sensors models (FLIR 92, NV Therm, NV Therm IP) that predict the comparative performance of electro-optical sensors. The NVESD modeling branch developed a 12-vehicle, 12-aspect target signature set in 1998 with a known cycle criteria. It will be referred to as the 12-target set. This 12-target set has and will continue to be the modeling "gold standard" for laboratory human perception experiments supporting sensor performance modeling, and has been employed in dozens of published experiments. The 12-target set is, however, too costly for most acquisition field tests and evaluations. The authors developed an 8-vehicle 3-aspect target set, referred to as the 8- target set, and measured its discrimination task difficulty, (N50 and V50). Target identification (ID) range performance predictions for several sensors were made based on those V50/N50 values. A field collection of the 8-target set using those sensors provided imagery for a human perception study. The human perception study found excellent agreement between predicted and measured range performance. The goal of this development is to create a "silver standard" target set that is as dependable in measuring sensor performance as the "gold standard", and is affordable for Milestone A and other field trials.

  1. Two Measures for Enhancing Data Association Performance in SLAM

    Directory of Open Access Journals (Sweden)

    Wu Zhou

    2014-01-01

    Full Text Available Data association is one of the key problems in the SLAM community. Several data association failures may cause the SLAM results to be divergent. Data association performance in SLAM is affected by both data association methods and sensor information. Two measures of handling sensor information are introduced herein to enhance data association performance in SLAM. For the first measure, truncating strategy of limited features, instead of all matched features, is used for observation update. These features are selected according to an information variable. This truncating strategy is used to lower the effect of false matched features. For the other measure, a special rejecting mechanism is designed to reject suspected observations. When the predicted robot pose is obviously different from the updated robot pose, all observed sensor information at this moment is discarded. The rejecting mechanism aims at eliminating accidental sensor information. Experimental results indicate that the introduced measures perform well in improving the stability of data association in SLAM. These measures are of extraordinary value for real SLAM applications.

  2. Sampling Approaches for Multi-Domain Internet Performance Measurement Infrastructures

    Energy Technology Data Exchange (ETDEWEB)

    Calyam, Prasad

    2014-09-15

    The next-generation of high-performance networks being developed in DOE communities are critical for supporting current and emerging data-intensive science applications. The goal of this project is to investigate multi-domain network status sampling techniques and tools to measure/analyze performance, and thereby provide “network awareness” to end-users and network operators in DOE communities. We leverage the infrastructure and datasets available through perfSONAR, which is a multi-domain measurement framework that has been widely deployed in high-performance computing and networking communities; the DOE community is a core developer and the largest adopter of perfSONAR. Our investigations include development of semantic scheduling algorithms, measurement federation policies, and tools to sample multi-domain and multi-layer network status within perfSONAR deployments. We validate our algorithms and policies with end-to-end measurement analysis tools for various monitoring objectives such as network weather forecasting, anomaly detection, and fault-diagnosis. In addition, we develop a multi-domain architecture for an enterprise-specific perfSONAR deployment that can implement monitoring-objective based sampling and that adheres to any domain-specific measurement policies.

  3. Medicare health maintenance organization benefits packages and plan performance measures.

    Science.gov (United States)

    Cox, Don; Lanyi, Bettina; Strabic, Allison

    2002-01-01

    This article reports the results of an analysis of the relationship between supplemental benefits offered by Medicare+Choice (M+C) plans and their plan performance ratings. We examined two measures of plan performance: (1) plan ratings as reported in the Medicare Managed Care (MMC) Consumer Assessment of Health Care Study (CAHPS), and (2) disenrollment rates. The results of our analysis indicated that variations in plan supplemental offerings have little impact on enrollees' plan performance ratings--both overall ratings and access to care measures. Furthermore, disenrollment rates were found to be more sensitive to the availability of alternative M+C plans, either in general, or for specific benefits than to variations in benefit offerings.

  4. Building and measuring a high performance network architecture

    Energy Technology Data Exchange (ETDEWEB)

    Kramer, William T.C.; Toole, Timothy; Fisher, Chuck; Dugan, Jon; Wheeler, David; Wing, William R; Nickless, William; Goddard, Gregory; Corbato, Steven; Love, E. Paul; Daspit, Paul; Edwards, Hal; Mercer, Linden; Koester, David; Decina, Basil; Dart, Eli; Paul Reisinger, Paul; Kurihara, Riki; Zekauskas, Matthew J; Plesset, Eric; Wulf, Julie; Luce, Douglas; Rogers, James; Duncan, Rex; Mauth, Jeffery

    2001-04-20

    Once a year, the SC conferences present a unique opportunity to create and build one of the most complex and highest performance networks in the world. At SC2000, large-scale and complex local and wide area networking connections were demonstrated, including large-scale distributed applications running on different architectures. This project was designed to use the unique opportunity presented at SC2000 to create a testbed network environment and then use that network to demonstrate and evaluate high performance computational and communication applications. This testbed was designed to incorporate many interoperable systems and services and was designed for measurement from the very beginning. The end results were key insights into how to use novel, high performance networking technologies and to accumulate measurements that will give insights into the networks of the future.

  5. Contracts, Performance Measurement and Accountability in the Public Sector

    DEFF Research Database (Denmark)

    Drewry, Gavin; Greve, Carsten; Tanquerel, Thierry

    This book addresses issues to do with public accountability, audit and performance measurement that are both highly topical and of crucial importance to the theory and practice of public administration in an era of contractualized public management. The literature on public sector contracting...... of audit and accountability in a variety of countries and contexts; the third part offers some wider, cross-cutting perspectives. Based on the work of the EGPA permanent study group on the history of contractualization, Contracts, Performance Measurement and Accountability in the Public Sector draws upon...... - covering both 'hard' agreements (ones that are legally enforceable) and 'soft' agreements (enforced by negotiation and mutual trust) - has been growing for some time and the present book adds a primarily European perspective on contracting, performance-based management and accountability. One important...

  6. A performance measurement using balanced scorecard and structural equation modeling

    Directory of Open Access Journals (Sweden)

    Rosha Makvandi

    2014-02-01

    Full Text Available During the past few years, balanced scorecard (BSC has been widely used as a promising method for performance measurement. BSC studies organizations in terms of four perspectives including customer, internal processes, learning and growth and financial figures. This paper presents a hybrid of BSC and structural equation modeling (SEM to measure the performance of an Iranian university in province of Alborz, Iran. The proposed study of this paper uses this conceptual method, designs a questionnaire and distributes it among some university students and professors. Using SEM technique, the survey analyzes the data and the results indicate that the university did poorly in terms of all four perspectives. The survey extracts necessary target improvement by presenting necessary attributes for performance improvement.

  7. Objective test and performance measurement of automotive crash warning systems

    Science.gov (United States)

    Szabo, S.; Norcross, R. J.; Falco, J. A.

    2007-04-01

    The National Institute of Standards and Technology (NIST), under an interagency agreement with the United States Department of Transportation (DOT), is supporting development of objective test and measurement procedures for vehicle-based warning systems intended to warn an inattentive driver of imminent rear-end, road-departure and lane-change crash scenarios. The work includes development of track and on-road test procedures, and development of an independent measurement system, which together provide data for evaluating warning system performance. This paper will provide an overview of DOT's Integrated Vehicle-Based Safety System (IVBSS) program along with a review of the approach for objectively testing and measuring warning system performance.

  8. THE PERFORMANCE OF THE ECONOMIC ENTITY MEASURED THROUGH ACCOUNTING INFORMATION

    Directory of Open Access Journals (Sweden)

    Marius Cristian Milos

    2012-01-01

    Full Text Available The users of financial statements need information regarding the resources of an economic entity and also data regarding the way in which the entity’s management is using resources. This information helps users to quantify efficiency and performance within an entity. There are many stakeholders who do show interest in an entity’s financial reports, including existing and potential investors, employees, lenders, suppliers, customers, regulators and other government agencies and not the least the common citizens. The main purpose of this paper is to highlight the importance of the performance measurement and to discuss possible reporting methods. Performance is a concept that raises many questions regarding the most accurate way or the best method for quantifying and reporting performance at the company level .So if financial performance indicators are considered to offer an accurate image of the situation of a company, the modern approach which focuses also on non-financial indicators offers new perspectives upon performance measurement, which may be really expressive and also based on simplicity.

  9. Synchronizing MIDI and wireless EEG measurements during natural piano performance.

    Science.gov (United States)

    Zamm, Anna; Palmer, Caroline; Bauer, Anna-Katharina R; Bleichner, Martin G; Demos, Alexander P; Debener, Stefan

    2017-07-08

    Although music performance has been widely studied in the behavioural sciences, less work has addressed the underlying neural mechanisms, perhaps due to technical difficulties in acquiring high-quality neural data during tasks requiring natural motion. The advent of wireless electroencephalography (EEG) presents a solution to this problem by allowing for neural measurement with minimal motion artefacts. In the current study, we provide the first validation of a mobile wireless EEG system for capturing the neural dynamics associated with piano performance. First, we propose a novel method for synchronously recording music performance and wireless mobile EEG. Second, we provide results of several timing tests that characterize the timing accuracy of our system. Finally, we report EEG time domain and frequency domain results from N=40 pianists demonstrating that wireless EEG data capture the unique temporal signatures of musicians' performances with fine-grained precision and accuracy. Taken together, we demonstrate that mobile wireless EEG can be used to measure the neural dynamics of piano performance with minimal motion constraints. This opens many new possibilities for investigating the brain mechanisms underlying music performance. Copyright © 2017 Elsevier B.V. All rights reserved.

  10. PERFORMANCE MEASUREMENT OF UCITS INVESTMENT FUNDS IN CROATIA

    Directory of Open Access Journals (Sweden)

    Marko Curkovic

    2017-03-01

    Full Text Available UCITS investment funds represent an important investment opportunity for retail, as well for institutional investors in the European Union. The aim of this paper is to analyse the performance of the UCITS investment funds in Croatia and to detect relatively homogeneous groups among the UCITS funds based on its performance. The analysis includes 55 UCITS, in the period from the beginning of 2011 until the end of 2014, and it is conducted on daily data of share prices, available from Bloomberg terminal. Analysis is performed separately within the groups of different investment fund by investment strategy. The research methodology is based on the calculation of various indicators of absolute and relative risk-adjusted performance and riskiness of the funds. In general, based on analysis of performance measures, it can be concluded that funds with higher values of net assets were more successful compared to the funds with below-average asset values. Also, funds with below-average values of net assets were more volatile. At the same time, funds run by foreign own management companies were more successful by the absolute performance measures, compared to funds run by management companies with domestic ownership. On the other hand, those funds were more volatile, as well.

  11. Supply Chain Dynamic Performance Measurement Based on BSC and SVM

    Directory of Open Access Journals (Sweden)

    Yan Hong

    2013-01-01

    Full Text Available Now individual contest among enterprises has been turning into collective contest among supply chains. Supply chain management (SCM has been a major component of competitive strategy to enhance organizational productivity and profitability. In recent years, organizational performance measurement and metrics have received much attention from researchers and practitioners. The foundation of proper supply chain performance assessment system is the basis of its effective operation and management. Most of the traditional supply chain performance evaluation is a static evaluation, while the actual supply chain is a dynamic system, therefore need to adapt with ways to carry out the evaluation. In order to meet the needs of the dynamic alliance's overall performance evaluation, this paper extended the traditional four Balanced Scorecard dimension into five. On this basis, established the five Balanced Scorecard dimension of supply chain, and also established a three-layered of quantitative index system according to this model. Measured then each performance indexs value by using the theory of Fuzzy Analytic Hierarchy Process, meanwhile reduced the number of input of the Support Vector Machine (SVM by using classification method, finally, got performance evaluations result by using the weighted Least Squares Support Vector Machine (LS-SVM, which provides the basis for rational analysis and decision-making of the supply chain.

  12. The relationship between health plan performance measures and physician network overlap: implications for measuring plan quality.

    Science.gov (United States)

    Maeng, Daniel D; Scanlon, Dennis P; Chernew, Michael E; Gronniger, Tim; Wodchis, Walter P; McLaughlin, Catherine G

    2010-08-01

    To examine the extent to which health plan quality measures capture physician practice patterns rather than plan characteristics. We gathered and merged secondary data from the following four sources: a private firm that collected information on individual physicians and their health plan affiliations, The National Committee for Quality Assurance, InterStudy, and the Dartmouth Atlas. We constructed two measures of physician network overlap for all health plans in our sample and linked them to selected measures of plan performance. Two linear regression models were estimated to assess the relationship between the measures of physician network overlap and the plan performance measures. The results indicate that in the presence of a higher degree of provider network overlap, plan performance measures tend to converge to a lower level of quality. Standard health plan performance measures reflect physician practice patterns rather than plans' effort to improve quality. This implies that more provider-oriented measurement, such as would be possible with accountable care organizations or medical homes, may facilitate patient decision making and provide further incentives to improve performance.

  13. Measuring process performance within healthcare logistics - a decision tool for selecting measuring technologies

    DEFF Research Database (Denmark)

    Feibert, Diana Cordes; Jacobsen, Peter

    2015-01-01

    Performance measurement can support the organization in improving the efficiency and effectiveness of logistical healthcare processes. Selecting the most suitable technologies is important to ensure data validity. A case study of the hospital cleaning process at a public Danish hospital...

  14. Performance Measurement using KPKU- BUMN in X School Education Foundation

    Science.gov (United States)

    Arijanto, Sugih; Harsono, Ambar; Taroepratjeka, Harsono

    2016-01-01

    The purpose of this research is to determine X School's Strengths and Opportunity of Improvement through performance measurement using KPKU-BUMN (Kriteria Penilaian Kinerja Unggul - Kementerian Badan Usaha Milik Negara). KPKU-BUMN is developed based on Malcolm Baldrige Criteria for Performance Excellent (MBCfPE). X school is an education foundation at Bandung that has provides education from kindergarten, elementary school, to junior and senior high school. The measurement is implemented by two aspects, Process and Result. The Process is measured by A-D-L-I approaches (Approach- Deployment-Learning- Integration), on the other hand The Result is measured by Le-T-C-I approach (Level-Trend- Comparison-Integration). There are six processes that will be measured: (1) Leadership, (2) Strategic Planning, (3) Customer Focus, (4) Measurement, Analysis and Knowledge Management, (5) Work Force Focus, and (6) Operation Focus. Meanwhile, the result are (a) product & process outcomes, (b) customer-focused outcomes, (c) workforce-focused outcomes, (d) leadership & governance outcomes, and (e) financial & market outcomes. The overall score for X School is 284/1000, which means X School is at “early result” level at “poor” global image.

  15. The prediction of transducer element performance from in air measurements

    Science.gov (United States)

    Schafer, M. E.

    1982-01-01

    A technique has been developed which accurately predicts the performance of underwater acoustic arrays prior to array construction. The technique is based upon the measurement of lumped-parameter equivalent circuit values for each element in the array, and is accurate in predicting the array transmit, receive and beam pattern response. The measurement procedure determines the shunt electrical and motional circuit elements from electrical imittance measurements. The electromechanical transformation ratio is derived from in-air measurements of the radiating face velocity and the input current to the transducer at resonance. The equivalent circuit values of a group of Tonpilz-type transducers were measured, and the self and mutual interaction acoustic loadings for a specific array geometry were calculated. The response of the elements was then predicted for water-loaded array conditions. Based on the predictions, a selection scheme was developed which minimized the effects of inter-element variability on array performance. The measured transmitting, receiving and beam pattern characteristics of a test array, built using the selected elements, were compared to predictions made before the array was built. The results indicated that the technique is accurate over a wide frequency range.

  16. Measuring the performance of visual to auditory information conversion.

    Directory of Open Access Journals (Sweden)

    Shern Shiou Tan

    Full Text Available BACKGROUND: Visual to auditory conversion systems have been in existence for several decades. Besides being among the front runners in providing visual capabilities to blind users, the auditory cues generated from image sonification systems are still easier to learn and adapt to compared to other similar techniques. Other advantages include low cost, easy customizability, and universality. However, every system developed so far has its own set of strengths and weaknesses. In order to improve these systems further, we propose an automated and quantitative method to measure the performance of such systems. With these quantitative measurements, it is possible to gauge the relative strengths and weaknesses of different systems and rank the systems accordingly. METHODOLOGY: Performance is measured by both the interpretability and also the information preservation of visual to auditory conversions. Interpretability is measured by computing the correlation of inter image distance (IID and inter sound distance (ISD whereas the information preservation is computed by applying Information Theory to measure the entropy of both visual and corresponding auditory signals. These measurements provide a basis and some insights on how the systems work. CONCLUSIONS: With an automated interpretability measure as a standard, more image sonification systems can be developed, compared, and then improved. Even though the measure does not test systems as thoroughly as carefully designed psychological experiments, a quantitative measurement like the one proposed here can compare systems to a certain degree without incurring much cost. Underlying this research is the hope that a major breakthrough in image sonification systems will allow blind users to cost effectively regain enough visual functions to allow them to lead secure and productive lives.

  17. Behavioral Health and Performance Laboratory Standard Measures (BHP-SM)

    Science.gov (United States)

    Williams, Thomas J.; Cromwell, Ronita

    2017-01-01

    The Spaceflight Standard Measures is a NASA Johnson Space Center Human Research Project (HRP) project that proposes to collect a set of core measurements, representative of many of the human spaceflight risks, from astronauts before, during and after long-duration International Space Station (ISS) missions. The term "standard measures" is defined as a set of core measurements, including physiological, biochemical, psychosocial, cognitive, and functional, that are reliable, valid, and accepted in terrestrial science, are associated with a specific and measurable outcome known to occur as a consequence of spaceflight, that will be collected in a standardized fashion from all (or most) crewmembers. While such measures might be used to define standards of health and performance or readiness for flight, the prime intent in their collection is to allow longitudinal analysis of multiple parameters in order to answer a variety of operational, occupational, and research-based questions. These questions are generally at a high level, and the approach for this project is to populate the standard measures database with the smallest set of data necessary to indicate further detailed research is required. Also included as standard measures are parameters that are not outcome-based in and of-themselves, but provide ancillary information that supports interpretation of the outcome measures, e.g., nutritional assessment, vehicle environmental parameters, crew debriefs, etc. The project's main aim is to ensure that an optimized minimal set of measures is consistently captured from all ISS crewmembers until the end of Station in order to characterize the human in space. -This allows the HRP to identify, establish, and evaluate a common set of measures for use in spaceflight and analog research to: develop baselines, systematically characterize risk likelihood and consequences, and assess effectiveness of countermeasures that work for behavioral health and performance risk factors

  18. Optimised polarisation measurements on Bragg peaks

    Energy Technology Data Exchange (ETDEWEB)

    Lelievre-Berna, E. [Institut Laue Langevin, 6 rue Jules Horowitz, 38042 Grenoble Cedex 9 (France)]. E-mail: lelievre@ill.fr; Brown, P.J. [Institut Laue Langevin, 6 rue Jules Horowitz, 38042 Grenoble Cedex 9 (France); Tasset, F. [Institut Laue Langevin, 6 rue Jules Horowitz, 38042 Grenoble Cedex 9 (France)

    2007-07-15

    Experimentally the asymmetry A (or the flipping ratio R) is deduced from the two count rates observed for |+> and |-> neutron spin states. Since the count rates for the two spin states may be quite different and both require to be corrected for background, the optimum strategy for the measurement is important. We present here the theory for optimisation of the accuracy of measurement of A (or R) within the constraint of a fixed total measuring time.

  19. Measuring process performance within healthcare logistics - a decision tool for selecting measuring technologies

    DEFF Research Database (Denmark)

    Feibert, Diana Cordes; Jacobsen, Peter

    2015-01-01

    Performance measurement can support the organization in improving the efficiency and effectiveness of logistical healthcare processes. Selecting the most suitable technologies is important to ensure data validity. A case study of the hospital cleaning process at a public Danish hospital...... was conducted. Monitoring tasks and ascertaining quality of work is difficult in such a process. Based on principal-agent theory, a set of decision indicator has been developed, and a decision framework for assessing technologies to enable performance measurement has been proposed....

  20. THEORETICAL APPROACHES REGARDING THE ECONOMIC AND FINANCIAL PERFORMANCE MEASUREMENT

    Directory of Open Access Journals (Sweden)

    CARUNTU ANDREEA LAURA

    2012-12-01

    Full Text Available The need for performance evaluation appears from the importance of the assessment of the available resources usage, the identification of the economic resources potential for future use and the capacity to generate cash flows. Practice has held a number of tools that provide information needed to assess the performance state, obviously, differentiated from one country to another corresponding to the particularities of each economic system and that are useful to a large number of people involved in the life of a trader. This article presents some performance characteristics and refers to the options of measuring the global performance by using the balanced scorecard, the Triple Bottom Line reporting and the GRI G3 guidelines.

  1. Measuring reflective-band imaging systems for performance prediction

    Science.gov (United States)

    Slonopas, Andre; Preece, Bradley L.; Haefner, David P.

    2017-05-01

    An objective performance of the reflective-band imaging systems is required in order to provide the warfighter with the right technology for a specific task. Various methods to measure and model performance in the visible (Vis) spectral regions have been proposed in the literature. This correspondence shows the influence of the spectral region averaging on the monochromatic modulation transfer function (MTF). This works unequivocally shows that the illumination source plays a crucial role in the accurate predictive analysis of the system performance. For accurate analysis the illumination sources need to be carefully considered for the atmospheric conditions. This work shows the possibility of using an LED configuration in the system performance analysis. Such configurations need rigorous calibration in order to become a valuable asset in system characterization.

  2. Pitfalls of converting practice guidelines into quality measures: lessons learned from a VA performance measure.

    Science.gov (United States)

    Walter, Louise C; Davidowitz, Natalie P; Heineken, Paul A; Covinsky, Kenneth E

    2004-05-26

    The Department of Veterans Affairs (VA) manages the largest health care system in the United States, and the Institute of Medicine has recommended that many practices of VA quality measurement be applied to the US health care system as a whole. The VA measures quality of care at all of its sites by assessing adherence rates to performance measures, which generally are derived from evidence-based practice guidelines. Higher adherence rates are used as evidence of better quality of care. However, there are problems with converting practice guidelines, intended to offer guidance to clinicians, into performance measures that are meant to identify poor-quality care. We suggest a more balanced perspective on the use of performance measures to define quality by delineating conceptual problems with the conversion of practice guidelines into quality measures. Focusing on colorectal cancer screening, we use a case study at 1 VA facility to illustrate pitfalls that can cause adherence rates to guideline-based performance measures to be poor indicators of the quality of cancer screening. Pitfalls identified included (1) not properly considering illness severity of the sample population audited for adherence to screening, (2) not distinguishing screening from diagnostic procedures when setting achievable target screening rates, and (3) not accounting for patient preferences or clinician judgment when scoring performance measures. For many patients with severe comorbid illnesses or strong preferences against screening, the risks of colorectal cancer screening outweigh the benefits, and the decision to not screen may reflect good quality of care. Performance measures require more thoughtful specification and interpretation to avoid defining high testing rates as good quality of care regardless of who received the test, why it was performed, or whether the patient wanted it.

  3. Measuring recent research performance for Chinese universities using bibliometric methods

    KAUST Repository

    Zhu, Jia

    2014-07-29

    This paper focuses on measuring the academic research performance of Chinese universities by using Scopus database from 2007 to 2010. We have provided meaningful indicators to measure the research performance of Chinese universities as compared to world class universities of the US and the European region. Using these indicators, we first measure the quantity and quality of the research outcomes of the universities and then examine the internationalization of research by using international collaborations, international citations and international impact metrics. Using all of this data, we finally present an overall score called research performance point to measure the comprehensive research strength of the universities for the selected subject categories. The comparison identifies the gap between Chinese universities and top-tier universities from selected regions across various subject areas. We find that Chinese universities are doing well in terms of publication volume but receive less citations from their published work. We also find that the Chinese universities have relative low percentage of publications at high impact venues, which may be the reason that they are not receiving more citations. Therefore, a careful selection of publication venues may help the Chinese universities to compete with world class universities and increase their research internationalization. © 2014 Akadémiai Kiadó, Budapest, Hungary.

  4. Arctic aerosol and cloud measurements performed during IAOOS 2014

    Science.gov (United States)

    Mariage, Vincent; Pelon, Jacques; Blouzon, Frédéric; Geyskens, Nicolas; Amarouche, Nadir; Drezen, Christine; Calzas, Michel; Victori, Stéphane; Garracio, Magali; Desautez, Alain; Pascal, Nicolas; Foujols, Thomas; Sarkissian, Alain; Pommereau, Jean-Pierre; Sennechael, Nathalie; Provost, Christine

    2015-04-01

    Better understanding of atmosphere-ice-ocean interactions and in particular of the role of aerosols and clouds in this Earth system is of prime importance in the Arctic. In the frame of the French IAOOS Equipex project, a new observational network is planned to be developed for ocean-ice-atmosphere climate survey over the Arctic, starting in 2015, to complement satellite observations. Eye-safe lidar measurements will allow us to profile aerosols and clouds for the atmospheric part, with the objective to perform regular measurements and characterize the vertical structure and optical properties. Radiation and meteorological parameters will be measured at the surface. A first buoy has been prototyped and deployed in April 2014 at the Barneo site set by the Russian teams at the North Pole. Measurements with the first autonomous backscatter lidar ever deployed in the arctic have been taken from April to end of November 2014 before the buoy was lost. Four profiles a day have been performed allowing a good sampling of cloud variability. Observations have shown that the occurrence of low level clouds was higher than 90% during summer. The project is presented, instrument performance is described and first results are discussed.

  5. Measured Performance of Residential Dehumidifiers Under Cyclic Operation

    Energy Technology Data Exchange (ETDEWEB)

    Winkler, J.; Christensen, D.; Tomerlin, J.

    2014-01-01

    Residential construction practices are progressing toward higher levels of energy efficiency. A proven strategy to save energy is to simultaneously increase building insulation levels and reduce outdoor air infiltration. Tight homes require intentional mechanical ventilation to ensure healthy indoor air. Overall, this strategy results in a shift in the mix of latent and sensible space conditioning loads, requiring proportionally more moisture to be removed compared to standard homes. There is currently not sufficient information available at a wide enough range of operating points to design dehumidification systems for high performance homes in hot-humid climates. The only industry information available on dehumidifier moisture removal and energy consumption are performance ratings conducted at a single test condition, which does not provide a full representation of dehumidifier operation under real-world conditions. Winkler et al. (2011) developed steady state performance maps to predict dehumidifier performance at a variety of indoor conditions. However, installed heating, ventilating, and air-conditioning (HVAC) equipment rarely operates at steady state. Part load performance testing of residential dehumidifiers is not mandated by current test standards. Therefore, we tested the part load performance of four residential dehumidifiers in the National Renewable Energy Laboratory's (NREL) Advanced HVAC Systems Laboratory . The part load efficiency of each dehumidifier was measured under 13 cycling scenarios, and combined with NREL field data to develop part load fraction (PLF) performance curves under realistic cycling scenarios.

  6. TRACEABILITY OF PRECISION MEASUREMENTS ON COORDINATE MEASURING MACHINES – PERFORMANCE VERIFICATION OF CMMs

    DEFF Research Database (Denmark)

    De Chiffre, Leonardo; Sobiecki, René; Tosello, Guido

    This document is used in connection with one exercise of 30 minutes duration as a part of the course VISION ONLINE – One week course on Precision & Nanometrology. The exercise concerns performance verification of the volumetric measuring capability of a small volume coordinate measuring machine. ....... This section contains reference to the American standard normative ANSI/ASME and a description of the exercise....

  7. TRACEABILITY OF PRECISION MEASUREMENTS ON COORDINATE MEASURING MACHINES – PERFORMANCE VERIFICATION OF CMMs

    DEFF Research Database (Denmark)

    De Chiffre, Leonardo; Sobiecki, René; Tosello, Guido

    This document is used in connection with one exercise of 30 minutes duration as a part of the course VISION ONLINE – One week course on Precision & Nanometrology. The exercise concerns performance verification of the volumetric measuring capability of a small volume coordinate measuring machine...

  8. KNOWLEDGE IN ENTERPRISE: THE ROLE AND PERFORMANCE MEASUREMENT

    Directory of Open Access Journals (Sweden)

    Marie Mikusova

    2008-10-01

    Full Text Available The current entrepreneurial environment increasingly makes demands on the recognition of driving forces influencing value creation. Intangible assets, first of all knowledge are becoming such driving forces. The paper emphasizes the role of knowledge in enterprise also in continuity with the management of new competences on the new global market. In brief, it presents some methods of measurement of intangible assets performance, the part of which is knowledge. In conclusion the paper emphasizes requirements for monitoring and valuation of intangible property performance with the emphasis on knowledge capital.

  9. Process-oriented performance indicators for measuring ecodesign management practices

    DEFF Research Database (Denmark)

    Rodrigues, Vinicius Picanco; Pigosso, Daniela Cristina Antelmi; McAloone, Tim C.

    2016-01-01

    In order to support ecodesign performance measurement from a business perspective, this paper performs an exploration of available process-oriented indicators to be applied to ecodesign management practices. With the Ecodesign Maturity Model as a background framework, a systematic literature review...... coupled with a cross-content analysis was carried out to assign proper indicators to the practices. Results show that the currently available indicators do not fully reflect the characteristics of ecodesign and there is significant room for improving the development of tailor-made indicators....

  10. Performance analysis of a digital capacitance measuring circuit.

    Science.gov (United States)

    Xu, Lijun; Sun, Shijie; Cao, Zhang; Yang, Wuqiang

    2015-05-01

    This paper presents the design and study of a digital capacitance measuring circuit with theoretical analysis, numerical simulation, and experimental evaluation. The static and dynamic performances of the capacitance measuring circuit are first defined, including signal-to-noise ratio (SNR), standard deviation, accuracy, linearity, sensitivity, and response time, within a given measurement range. Then numerical simulation is carried out to analyze the SNR and standard deviation of the circuit, followed by experiments to validate the overall performance of the circuit. The simulation results show that when the standard deviation of noise is 0.08 mV and the measured capacitance decreases from 6 pF to 3 fF, the SNR decreases from 90 dB to 22 dB and the standard deviation is between 0.17 fF and 0.24 fF. The experimental results show that when the measured capacitance decreases from 6 pF to 40 fF and the data sampled in a single period are used for demodulation, the SNR decreases from 88 dB to 40 dB and the standard deviation is between 0.18 fF and 0.25 fF. The maximum absolute error and relative error are 5.12 fF and 1.26%, respectively. The SNR and standard deviation can be further improved if the data sampled in more than one period are used for demodulation by the circuit.

  11. Performance of the beam phase measurement system for LEDA

    Science.gov (United States)

    Power, J. F.; Barr, D.; Gilpatrick, J. D.; Kasemir, K.; Shurter, R. B.; Stettler, M.

    2000-11-01

    The Low Energy Demonstration Accelerator (LEDA) facility diagnostics include beam phase measurements [1]. Beam signals at 350 MHz from capacitive probes are down-converted to 2 MHz for processing. The phase measurement process includes amplitude leveling, digital sampling of the I and Q vectors, DSP filtering and calibration, and serving of the data to the network. All hardware is fielded in the VXI format and controlled with a PC. Running under Windows NT, a LabVIEW® program controls the operation of the system and serves the data, via channel access, to the EPICS control system. The design and operational performance to date of the system is described.

  12. Innovative Performance Measurement: an Integrative Perspective of Stakeholder's View

    Directory of Open Access Journals (Sweden)

    López-Fresno Palmira

    2014-11-01

    Full Text Available Business Process Management (BPM has been increasingly focused as an holistic approach to manage organizations for better organizational effectiveness. BPM involves the use of innovative performance measurement systems to follow up, coordinate, control and improve processes and overall business efficacy and efficiency. In this paper we propose a global holistic perspective of integrated information, combining the view of all stakeholders and both qualitative and quantitative information, as a basic prerequisite for quality of information for better decision making. The paper includes findings from an empirical case study of measuring Parkinson's Disease Neurosurgery process, including stakeholder's view with an integrative perspective.

  13. A Design of WCDMA RF Transceiver with Its Performance Measuring

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    A 2-GHz radio frequency transceiver is presented and implemented for third generation mobile communications using wide-band code division multiple access (WCDMA) scheme. Performance measuring systems are introduced for transmitter channel and receiver sensitivity, respectively. The transceiver achieves maximum output power of 22 dBm, dynamic range of 85 dB, adjacent channel power rejection ratio (ACPR) of -41dB@5MHz, and receiver sensitivity of -119.6 dBm for 128-kb/s data at 3.84-Mcps spreading rate. The measured results indicate the conformity to the required commercial 2.0-GHz WCDMA specification and 3GPP requirements.

  14. Quantification of the flow measurement performance due to installation changes

    Energy Technology Data Exchange (ETDEWEB)

    Ferreira, Ana Luisa Auler da Silva [Petrobras Transporte S.A. (TRANSPETRO), Rio de Janeiro, RJ (Brazil)

    2012-07-01

    The objective is to present a criterion to identify and quantify improvements in the performance of flowmeters due to alterations in the design of a measurement system. The method was developed aiming at improvements in the operational systems, but is also useful in custody transfer systems. Take as base the estimate of uncertainty in the measurement systems, and seek a more intuitive way so as to aggregate the experience and knowledge available in the company. The identification of the measurand is carried out based on available information, the processing of data and the method of calculation. The improvements in the installation of measurement systems are given priority based on the measurement uncertainty of the CTPL (temperature and pressure correction factor) and the MF(meter factor). In the case of the CTPL, the influence of the pressure, temperature and density instruments in the results of the measurement system is evaluated, and in the case of the MF, the influence of the calibration system. The possibilities for calibrating the flowmeter in industry are presented, also detailing the calibration of the operational meter against custody transfer systems. The analysis of networks includes calculating the uncertainty in the closing of the network balance, calculation of the uncertainties and contributions of the measurement systems that form part of the network, and a comparison of improvements and costs, calculation for each alteration in the design of the measurement system, and its cost per improvement of 0.01% in the uncertainty of the closing. (author)

  15. A new family of cumulative indexes for measuring scientific performance.

    Directory of Open Access Journals (Sweden)

    Marcin Kozak

    Full Text Available In this paper we propose a new family of cumulative indexes for measuring scientific performance which can be applied to many metrics, including h index and its variants (here we apply it to the h index, h(2 index and Google Scholar's i10 index. These indexes follow the general principle of repeating the index calculation for the same publication set. Using bibliometric data and reviewer scores for accepted and rejected fellowship applicants we examine how valid the cumulative variant is compared to the original variant. These analyses showed that the cumulative indexes result in higher correlations with the reviewer scores than their original variants. Thus, the cumulative indexes better reflect the assessments by peers than the original variants and are useful extensions of the original indexes. In contrast to many other measures of scientific performance proposed up to now, the cumulative indexes seem not only to be effective, but they are also easy to understand and calculate.

  16. Performance Improvement of a Measurement Station for Superconducting Cable Test

    CERN Document Server

    Arpaia, P; Montenero, G; Le Naour, S

    2012-01-01

    A fully digital system, improving measurements flexibility, integrator drift, and current control of superconducting transformers for cable test, is proposed. The system is based on a high-performance integration of Rogowski coil signal and a flexible direct control of the current into the secondary windings. This allows state-of-the-art performance to be overcome by means of out-of-the-shelf components: on a full-scale of 32 kA, current measurement resolution of 1 A, stability below 0.25 Amin-1, and controller ripple less than 50 ppm. The system effectiveness has been demonstrated experimentally on the superconducting transformer of the Facility for the Research of Superconducting Cables at the European Organization for Nuclear Research (CERN).

  17. Relating Standardized Visual Perception Measures to Simulator Visual System Performance

    Science.gov (United States)

    Kaiser, Mary K.; Sweet, Barbara T.

    2013-01-01

    Human vision is quantified through the use of standardized clinical vision measurements. These measurements typically include visual acuity (near and far), contrast sensitivity, color vision, stereopsis (a.k.a. stereo acuity), and visual field periphery. Simulator visual system performance is specified in terms such as brightness, contrast, color depth, color gamut, gamma, resolution, and field-of-view. How do these simulator performance characteristics relate to the perceptual experience of the pilot in the simulator? In this paper, visual acuity and contrast sensitivity will be related to simulator visual system resolution, contrast, and dynamic range; similarly, color vision will be related to color depth/color gamut. Finally, we will consider how some characteristics of human vision not typically included in current clinical assessments could be used to better inform simulator requirements (e.g., relating dynamic characteristics of human vision to update rate and other temporal display characteristics).

  18. Framework for measuring the sustainability performance of ecodesign implementation

    DEFF Research Database (Denmark)

    Rodrigues, Vinicius Picanco; Pigosso, Daniela Cristina Antelmi; McAloone, Tim C.

    Companies and academic studies are consistently reporting several potential business benefits gained fromecodesign implementation, such as increased innovation potential, development of new markets and business models, reduction in environmental liability, risks and costs, improvement of organiza......Companies and academic studies are consistently reporting several potential business benefits gained fromecodesign implementation, such as increased innovation potential, development of new markets and business models, reduction in environmental liability, risks and costs, improvement...... of organizational brandand legal compliance, among others. However, there is a number of challenges that still hamper corporate adoption of ecodesign, mainly regarding the capture and measurement of the estimated business benefits. Furthermore, ecodesign efforts have been primarily evaluated in terms...... of environmental performance and product-related (technical) measures, such as shape, material and energy consumption. Because the ecodesign business benefits go beyond the pure environmental performance and its implementation should follow a consistent process-oriented integration, an approach based on the triple...

  19. Photon counting performance measurements of transfer electron InGaAsP photocathode hybrid photomultiplier tubes at 1064 nm wavelength

    Science.gov (United States)

    Sun, Xiaoli; Krainak, Michael A.; Hasselbrack, William B.; La Rue, Ross A.

    2007-05-01

    We report the test results of a hybrid photomultiplier tube (HPMT) with a transfer electron (TE) InGaAsP photocathode and GaAs Schottky avalanche photodiode (APD) anode. Unlike Geiger mode InGaAsP APDs, these HPMTs (also known as intensified photodiode (IPD), vacuum APD, or hybrid photodetector) operate in linear mode without the need for quenching and gating. Their greatest advantages are wide dynamic range, high speed, large photosensitive area, and potential for photon counting and analog detection dual mode operation. The photon detection efficiency we measured was 25% at 1064 nm wavelength with a dark count rate of 60,000/s at -22 degrees Celsius. The output pulse width in response to a single photon detection is about 0.9 ns. The maximum count rate was 90 Mcts/s and was limited solely by the speed of the discriminator used in the measurement (10 ns dead time). The spectral response of these devices extended from 900 to 1300 nm. We also measured the HPMT response to 60 ps laser pulses. The average output pulse amplitude increased monotonically with the input pulse energy, which suggested that we can resolve photon number in an incident pulse. The jitter of the HPMT output was found to be about 0.5 ns standard deviation and depended on bias voltage applied to the TE photocathode. To our knowledge, these HPMTs are the most sensitive non gating photon detectors at 1064 nm wavelength, and they will have many applications in laser altimeters, atmospheric lidars, and free space laser communication systems.

  20. Validation and Evaluation of Army Aviation Collective Performance Measures

    Science.gov (United States)

    2014-01-01

    Christopher Sullivan , current and previous Directors of Simulation, for their support of this project. The authors also thank LTC Michael Hansen, MAJ...measures was supported by the SPOTLITE application (Jackson, et al., 2008; MacMillan, et al., in press; Wiese, Nungesser, Marceau, Puglisi, & Frost , 2007...Marceau, R., Puglisi, M., & Frost , B. (2007). Assessing trainee performance in field and simulation-based training: Development and pilot study results

  1. Commodification or Transformation? Measuring performance in the public sector

    OpenAIRE

    Adcroft, AP; Willis, R.

    2005-01-01

    Currently managerial reforms in the UK public sector focus on performance measurement aimed at increasing accountability, value for money and the use of scarce resources. Through examination of this process in the National Health Service and higher education, this paper argues that this represents the imposition of private sector management practices and, therefore, represents further commodification of public sector services. The most likely outcome of these changes is not transformation of ...

  2. Measuring elderly dysphagic patients' performance in eating--a review

    DEFF Research Database (Denmark)

    Hansen, Tina; Kjaersgaard, Annette; Faber, Jens

    2011-01-01

    Purpose. This review aims to identify psychometrically robust assessment tools suitable for measuring elderly dysphagic patients' performance in eating for use in clinical practice and research. Method. Electronic databases, related citations and references were searched to identify assessment...... criteria concerning the study design, the statistics used for the psychometric evaluation and the reported values. Results. Eight of fourteen identified assessment tools met the inclusion criteria. Three assessment tools were specific to dementia, two were specific to stroke and three targeted a range...

  3. Human capital measures, strategy and performance: HR managers' perceptions

    OpenAIRE

    Gates, Stephen; Langevin, Pascal

    2010-01-01

    The purpose of this paper is to report the results of a survey and interviews with human resource (HR) professionals to identify and better understand their perceptions and expectations of human capital measures' (HCM) content, links to strategy, and impact on performance. This paper relies on a quantitative analysis of survey questionnaires collected from 104 HR executives, as well as on a qualitative investigation using six interviews. Two types of HCM are derived using principal component ...

  4. Measurement of taskload in the analysis of aircrew performance

    Science.gov (United States)

    Laudeman, Irene V.; Palmer, Everett A.

    1993-01-01

    The objective of the study was to perform a quantitative analysis of a high workload portion of a full mission flight simulation in order to test the hypothesis that taskload area is a valid, objective measure of workload management. This methodology provides a tool for the researcher attempting to quantify the management of workload in a complex environment. The researcher can then produce a reliable quantitative evaluation of behavior related to workload management.

  5. A balanced perspective: using nonfinancial measures to assess financial performance.

    Science.gov (United States)

    Watkins, Ann L

    2003-11-01

    Assessments of hospitals' financial performance have traditionally been based exclusively on analysis of a concise set of key financial ratios. One study, however, demonstrates that analysis of a hospital's financial condition can be significantly enhanced with the addition of several nonfinancial measures, including case-mix adjusted admissions, case-mix adjusted admissions per full-time equivalent, and case-mix adjusted admissions per beds in service.

  6. How should we measure psychological resilience in sport performers?

    OpenAIRE

    Sarkar, M.; Fletcher, D.

    2013-01-01

    Psychological resilience is important in sport because athletes must constantly withstand a wide range of pressures to attain and sustain high performance. To advance psychologists’ understanding of this area, there exists an urgent need to develop a sport-specific measure of resilience. The purpose of this paper is to review psychometric issues in resilience research and to discuss the implications for sport psychology. Drawing on the wider general psychology literature to inform the discu...

  7. A characterization of performance measures for measuring postponement strategies: case studies in food companies

    Directory of Open Access Journals (Sweden)

    Karine Araújo Ferreira

    2011-05-01

    Full Text Available The postponement strategy is more and more used by companies with the increasing complexity and variety of products, currently required by the market. In essence, the postponement is used to delay as much as possible the final configuration and/or movement of products and services, until the demand known. Despite the increasing attention to the subject, little is known about is implementation, especially in the Brazilian food industry. This research aims to investigate how the postponement strategy is applied to food companies and what performance measures that can be used to evaluate the results of this application. To meet these goals were developed six exploratory case studies in orange juice and fruits processing companies. The results allow comparing the performance measures found in the literature with those obtained in empirical research and systematize them in order to obtain a list of performance measures for measuring postponement strategies.

  8. Performance evaluation of similarity measures for dense multimodal stereovision

    Science.gov (United States)

    Yaman, Mustafa; Kalkan, Sinan

    2016-05-01

    Multimodal imaging systems have recently been drawing attention in fields such as medical imaging, remote sensing, and video surveillance systems. In such systems, estimating depth has become possible due to the promising progress of multimodal matching techniques. We perform a systematic performance evaluation of similarity measures frequently used in the literature for dense multimodal stereovision. The evaluated measures include mutual information (MI), sum of squared distances, normalized cross-correlation, census transform, local self-similarity (LSS) as well as descriptors adopted to multimodal settings, like scale invariant feature transform (SIFT), speeded-up robust features (SURF), histogram of oriented gradients (HOG), binary robust independent elementary features, and fast retina keypoint (FREAK). We evaluate the measures over datasets we generated, compiled, and provided as a benchmark and compare the performances using the Winner Takes All method. The datasets are (1) synthetically modified four popular pairs from the Middlebury Stereo Dataset (namely, Tsukuba, Venus, Cones, and Teddy) and (2) our own multimodal image pairs acquired using the infrared and the electro-optical cameras of a Kinect device. The results show that MI and HOG provide promising results for multimodal imagery, and FREAK, SURF, SIFT, and LSS can be considered as alternatives depending on the multimodality level and the computational complexity requirements of the intended application.

  9. Why do employees take more initiatives to improve their performance after co-developing performance measures? A field study

    NARCIS (Netherlands)

    Groen, B.A.C.; Wouters, M.J.F.; Wilderom, C.P.M.

    2012-01-01

    Performance measurements may stimulate employee initiatives to improve operational performance, especially when employees themselves participate in the development of their own departmental performance measures. Using the theory of planned behavior, we examine why this occurs in a beverage

  10. Why do employees take more initiatives to improve their performance after co-developing performance measures? A field study.

    NARCIS (Netherlands)

    Groen, B.A.C.; Wouters, Marc; Wilderom, Celeste P.M.

    2012-01-01

    Performance measurements may stimulate employee initiatives to improve operational performance, especially when employees themselves participate in the development of their own departmental performance measures. Using the theory of planned behavior, we examine why this occurs in a beverage

  11. Precise measurement of the performance of thermoelectric modules

    Science.gov (United States)

    Díaz-Chao, Pablo; Muñiz-Piniella, Andrés; Selezneva, Ekaterina; Cuenat, Alexandre

    2016-08-01

    The potential exploitation of thermoelectric modules into mass market applications such as exhaust gas heat recovery in combustion engines requires an accurate knowledge of their performance. Further expansion of the market will also require confidence on the results provided by suppliers to end-users. However, large variation in performance and maximum operating point is observed for identical modules when tested by different laboratories. Here, we present the first metrological study of the impact of mounting and testing procedures on the precision of thermoelectric modules measurement. Variability in the electrical output due to mechanical pressure or type of thermal interface materials is quantified for the first time. The respective contribution of the temperature difference and the mean temperature to the variation in the output performance is quantified. The contribution of these factors to the total uncertainties in module characterisation is detailed.

  12. Measurement of Overall Performance Effectiveness in Setup Improvement

    Directory of Open Access Journals (Sweden)

    Shye-Nee Low

    2014-01-01

    Full Text Available This study aimed to improve the setup process of injection molding machines by using the developed setup improvement methodology. Overall performance effectiveness (OPE was used to evaluate the setup improvement. A case study was tested on the application of the developed setup improvement methodology. A 50.1% reduction in setup time was attained by the developed methodology, and significant time savings were achieved with minimum investment. Comparisons between before and after improvement implementation were conducted through OPE to verify the improvement. In terms of OPE, the setup performance in the case study considered an acceptable value of 60.45%. The setup process performance of the developed setup improvement methodology was judged in terms of effectiveness. Results therefore indicate that OPE measurement is an effective way to analyze the efficiency of a single setup process.

  13. Procedure for evaluating measurement system performance: a case study

    Science.gov (United States)

    Hershey, Robert R.; Elliott, Richard C.

    1995-05-01

    This paper presents the methodology used to perform an evaluation of automated CD metrology SEMs for sub-half micron process control. The paper describes the evaluation strategy, the procedure used to collect and analyze the evaluation data and concludes with recommendations on how the procedure can be improved. The evaluation process was designed to estimate metrology capability and review specific application requirements envisioned for a leading edge semiconductor development and manufacturing facility at Motorola. The evaluation process consisted of a quantitative evaluation of measurement performance specifically examining the reproducibility, linearity, automation success rate, and throughput of the instrument. In addition, capabilities such as user interface, computer integration, job transportability, and technology roadmap were assessed qualitatively. Although a particular evaluation of automated CD SEMs is considered here, the principles used to develop the evaluation procedure can be applied to metrology tools in general. A discussion of the application and desired functionality of CD metrology instrumentation including performance criteria is presented for completeness.

  14. Significant improvements in long trace profiler measurement performance

    Energy Technology Data Exchange (ETDEWEB)

    Takacs, P.Z. [Brookhaven National Lab., Upton, NY (United States); Bresloff, C.J. [Argonne National Lab., IL (United States)

    1996-07-01

    A Modifications made to the Long Trace Profiler (LTP II) system at the Advanced Photon Source at Argonne National Laboratory have significantly improved the accuracy and repeatability of the instrument The use of a Dove prism in the reference beam path corrects for phasing problems between mechanical efforts and thermally-induced system errors. A single reference correction now completely removes both error signals from the measured surface profile. The addition of a precision air conditioner keeps the temperature in the metrology enclosure constant to within {+-}0.1{degrees}C over a 24 hour period and has significantly improved the stability and repeatability of the system. We illustrate the performance improvements with several sets of measurements. The improved environmental control has reduced thermal drift error to about 0.75 microradian RMS over a 7.5 hour time period. Measurements made in the forward scan direction and the reverse scan direction differ by only about 0.5 microradian RMS over a 500mm, trace length. We are now able to put 1-sigma error bar of 0.3 microradian on an average of 10 slope profile measurements over a 500mm long trace length, and we are now able to put a 0.2 microradian error bar on an average of 10 measurements over a 200mm trace length. The corresponding 1-sigma height error bar for this measurement is 1.1 run.

  15. 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.

  16. Optical radiation measurements for photovoltaic applications: instrumentation uncertainty and performance

    Science.gov (United States)

    Myers, Daryl R.; Reda, Ibrahim; Wilcox, Stephen; Andreas, Afshin

    2004-11-01

    Evaluating the performance of photovoltaic (PV) devices in the laboratory and in the field requires accurate knowledge of the optical radiation stimulating the devices. We briefly describe the radiometric instrumentation used for characterizing broadband and spectral irradiance for PV applications. Spectral radiometric measurement systems are used to characterize solar simulators (continuous and pulsed, or flash sources) and natural sunlight. Broadband radiometers (pyranometers and pyrheliometers) are used to assess solar resources for renewable applications and develop and validate broadband solar radiation models for estimating system performance. We describe the sources and magnitudes of uncertainty associated with calibrations and measuremens using these instruments. The basic calibration and measurement uncertainty associated with this instrumentaion are based on the guidlines described in the International Standards Organization (ISO) and Bureau INternationale des Poids et Mesures (BIPM) Guide to Uncertainty in Measurement. The additional contributions to uncertainty arising from the uncertainty in characterization functions and correction schemes are discussed and ilustrated. Finally, empirical comparisons of several solar radiometer instrumentation sets illustrate that the best measurement accuracy for broadband radiation is on the order of 3%, and spectrally dependent uncertainty for spectroradiometer systems range from 4% in the visible to 8% to 10% in the ultraviolet and infrared.

  17. Experimental testing of the digital multichannel analyzer for gamma spectrometry measurements

    Directory of Open Access Journals (Sweden)

    Novković Dušan

    2008-01-01

    Full Text Available The results of experimental testing of the digital multichannel analyzer which digitalizes the signal after a preamplifier are presented. The recordings of some of the characteristics of the spectrometer containing a digital MCA, such as full-peak efficiency, net area ratio of the two peaks and the stability of the peak position, were carried out under different input counting rates, with different radioactive sources. The tested MCA has shown some excellent features, like the stability of the peak position over a long-term period and flexibility in the adjusting of optimum measurement conditions. However, the performed tests have also shown some serious and unexpected disadvantages of the digital MCA when it operates under certain circumstances, one of them having to do with the automatic tuning of live-time correction at low-input counting rates.

  18. Reducing Uncertainty: Implementation of Heisenberg Principle to Measure Company Performance

    Directory of Open Access Journals (Sweden)

    Anna Svirina

    2015-08-01

    Full Text Available The paper addresses the problem of uncertainty reduction in estimation of future company performance, which is a result of wide range of enterprise's intangible assets probable efficiency. To reduce this problem, the paper suggests to use quantum economy principles, i.e. implementation of Heisenberg principle to measure efficiency and potential of intangible assets of the company. It is proposed that for intangibles it is not possible to estimate both potential and efficiency at a certain time point. To provide a proof for these thesis, the data on resources potential and efficiency from mid-Russian companies was evaluated within deterministic approach, which did not allow to evaluate probability of achieving certain resource efficiency, and quantum approach, which allowed to estimate the central point around which the probable efficiency of resources in concentrated. Visualization of these approaches was performed by means of LabView software. It was proven that for tangible assets performance estimation a deterministic approach should be used; while for intangible assets the quantum approach allows better quality of future performance prediction. On the basis of these findings we proposed the holistic approach towards estimation of company resource efficiency in order to reduce uncertainty in modeling company performance.

  19. Process-related key performance indicators for measuring sustainability performance of ecodesign implementation into product development

    DEFF Research Database (Denmark)

    Rodrigues, Vinicius Picanco; Pigosso, Daniela Cristina Antelmi; McAloone, Tim C.

    2016-01-01

    Developing products with improved environmental performance is regarded as a crucial component of companies' commitment towards sustainable development. The potential benefits derived from ecodesign are constantly highlighted in the literature, and go beyond the pure environmental dimension....... However, the primary focus has been positioned on evaluating those benefits in terms of product-related environmental performance, which leaves an open potential for capturing performance from a broader managerial perspective. Consequently, the major challenges tackled by this paper relate to the limited...... focus on process-oriented perspectives that cover all dimensions of the triple bottom line and offer a systematized view on ecodesign performance measurement. Therefore, this paper presents a comprehensive set of process-related key performance indicators for product development, based on a three...

  20. A Pixel Readout Chip in 40 nm CMOS Process for High Count Rate Imaging Systems with Minimization of Charge Sharing Effects

    Energy Technology Data Exchange (ETDEWEB)

    Maj, Piotr; Grybos, P.; Szczgiel, R.; Kmon, P.; Drozd, A.; Deptuch, G.

    2013-11-07

    We present a prototype chip in 40 nm CMOS technology for readout of hybrid pixel detector. The prototype chip has a matrix of 18x24 pixels with a pixel pitch of 100 m. It can operate both in single photon counting (SPC) mode and in C8P1 mode. In SPC the measured ENC is 84 e rms (for the peaking time of 48 ns), while the effective offset spread is below 2 mV rms. In the C8P1 mode the chip reconstructs full charge deposited in the detector, even in the case of charge sharing, and it identifies a pixel with the largest charge deposition. The chip architecture and preliminary measurements are reported.

  1. DESIGNING COMPANY PERFORMANCE MEASUREMENT SYSTEM USING BALANCE SCORECARD APPROACH

    Directory of Open Access Journals (Sweden)

    Cecep Mukti Soleh

    2015-05-01

    Full Text Available This research aimed to design how to measure company performance by using balance scorecard approach in coal transportation services industry. Depth interview was used to obtain qualitative data determination of strategic objectives, key performance indicators, strategic initiatives, and in charge units for each balanced scorecard perspectives while the quantitative data were obtained from weighting through questionnaires and analyzed using paired comparison to get a perspective what mostly affected the performance of the company. To measure the achievement of corporate performance, each KPI used (1 the scoring system with the methods that higher is better, lower is better and precise is better; (2 traffic light system with the help of green, yellow, red for identification of target achievement. This research result shows that in the balance scorecard perspective, the most influences on the overall performance of the company include the customer's perspective (31%, financial perspective (29%, internal business processes (21%, learning, and growth 19%. Keywords: balance scorecard, paired comparison, coal transportation serviceABSTRAKPenelitian ini bertujuan untuk merancang pengukuran kinerja perusahaan dengan menggunakan pendekatan balance scorecard di industri jasa pengangkutan batu bara. Data kualitatif diperoleh melalui indepth interview digunakan untuk menentukan sasaran strategik, indikator kinerja utama, inisiatif strategi dan penanggungjawab setiap divisi setiap perspektif balance scorecard, sedangkan data kuantitatif digunakan untuk pembobotan melalui kuesioner dan dianalisis dengan menggunakan metode paired comparisson untuk mendapatkan perspektif yang paling berpengaruh terhadap kinerja perusahaan. Ukuran pencapaian kinerja perusahaan dari setiap KPI menggunakan; (1 scoring system dengan bantuan metode higher is better, lower is better dan precise is better;(2 traffic light system dengan menggunakan bantuan warna hijau, kuning, merah

  2. Analysis of Illinois Home Performance with ENERGY STAR® Measure Packages

    Energy Technology Data Exchange (ETDEWEB)

    Baker, J. [Partnership for Advanced Residential Retrofit (PARR), Chicago, IL (United States); Yee, S. [Partnership for Advanced Residential Retrofit (PARR), Chicago, IL (United States); Brand, L. [Partnership for Advanced Residential Retrofit (PARR), Chicago, IL (United States)

    2013-09-01

    Through the Chicagoland Single Family Housing Characterization and Retrofit Prioritization report, the Partnership for Advanced Residential Retrofit research team characterized 15 housing types in the Chicagoland region based on assessor data, utility billing history, and available data from prior energy efficiency programs. Within these 15 groups, a subset showed the greatest opportunity for energy savings based on BEopt Version 1.1 modeling of potential energy efficiency package options and the percent of the housing stock represented by each group. In this project, collected field data from a whole-home program in Illinois are utilized to compare marketplace-installed measures to the energy saving optimal packages previously developed for the 15 housing types. Housing type, conditions, energy efficiency measures installed, and retrofit cost information were collected from 19 homes that participated in the Illinois Home Performance with ENERGY STAR program in 2012, representing eight of the characterized housing groups. Two were selected for further case study analysis to provide an illustration of the differences between optimal and actually installed measures. Taken together, these homes are representative of 34.8% of the Chicagoland residential building stock. In one instance, actual installed measures closely matched optimal recommended measures.

  3. Measuring the performance of G2G services in Iran

    Science.gov (United States)

    Zarei, Behrouz; Safdari, Maryam

    To highlight the growth of e-government and the importance of its services it is essential to evaluate the performance of the service delivery to customers. Research indicates that traditional performance indexes are not suitable for this evaluation; moreover, it is noticeable that the e-government services are intangible and invisible. Among different e-government services, measurement of quality government to government (G2G) services has been less attractive for researchers while crucial for government policy-makers. This calls for a better understanding of the specific needs of users of these services in order to provide appropriate type and level of services that meets those needs. In this paper, the performance of the G2G services is measured in the Iranian context. For this purpose, SERVQUAL, which is a well-known method for assessing service quality, is employed. This study proposes and tests a five-factor of SERVQUAL instrument to explain user satisfaction and gap analysis, between expectations and perceptions of its customers, consisting thirty ministries and main governmental organizations. Based on a Chi-square test, factor analysis, gap analysis and correlations, it is concluded the gap between expectations and perceptions of G2G customers is significant and customer satisfaction of G2G services is at low level.

  4. Perceptual costs for motion transparency evaluated by two performance measures.

    Science.gov (United States)

    Suzuki, Naoto; Watanabe, Osamu

    2009-08-01

    Transparency perception is recognized as one of the important phenomena to understand the computational mechanism of early visual system. Transparency perception indicates that a simple theory reconstructing a single-valued field of a visual attribute, such as an optical-flow field, cannot model the neural mechanism for the human visual system and raises a fundamental issue of how visual attributes are represented and detected in the brain. It is considered that one of the important cues to reveal the neural encoding mechanism for overlapping surfaces is the perceptual cost in transparency perception. It has been known that the perceptual performance in motion transparency is worse than that expected from single motion perception. This perceptual "cost" would reflect the encoding strategy for transparent motions. Here we present a systematic study comparing the perceptual costs in motion transparency evaluated by two performance measures. The result showed that the properties of the perceptual costs varied with the performance measures. The perceptual cost evaluated by the motion detection threshold became smaller as a directional difference between overlapping motions increased, whereas the cost examined with the precision of directional judgments became worse. A computational analysis suggests that these contradictory results cannot be explained by a simple population coding model for motion directions.

  5. Subsurface Biogeochemical Research FY11 Second Quarter Performance Measure

    Energy Technology Data Exchange (ETDEWEB)

    Scheibe, Timothy D.

    2011-03-31

    The Subsurface Biogeochemical Research (SBR) Long Term Measure for 2011 under the Performance Assessment Rating Tool (PART) measure is to "Refine subsurface transport models by developing computational methods to link important processes impacting contaminant transport at smaller scales to the field scale." The second quarter performance measure is to "Provide a report on computational methods linking genome-enabled understanding of microbial metabolism with reactive transport models to describe processes impacting contaminant transport in the subsurface." Microorganisms such as bacteria are by definition small (typically on the order of a micron in size), and their behavior is controlled by their local biogeochemical environment (typically within a single pore or a biofilm on a grain surface, on the order of tens of microns in size). However, their metabolic activity exerts strong influence on the transport and fate of groundwater contaminants of significant concern at DOE sites, in contaminant plumes with spatial extents of meters to kilometers. This report describes progress and key findings from research aimed at integrating models of microbial metabolism based on genomic information (small scale) with models of contaminant fate and transport in aquifers (field scale).

  6. Adapted Performance Measures and the Performance of Dutch Municipalities in Reducing Crime Rates

    NARCIS (Netherlands)

    Vries, M.S. de; Lako, C.J.

    2009-01-01

    This article proposes to change performance measurement in such a way that it becomes possible to relate outcomes to the public policies involved, taking into account the complexity of the context. It involves a five step procedure, including quantitative and qualitative analysis. It is argued that

  7. Observation of 511 keV peak high count rate in studying (n,x) and (g,x) reactions on terbium

    OpenAIRE

    Kadenko, I.; Dzysiuk, N.

    2011-01-01

    Experimental investigation of (n, x) and (g, x) reactions on Tb-159 with activation technique was carried out. Tb specimens of natural composition were irradiated with (d-d) and (d-t) neutrons using NG-300 neutron generator. Additionally the series of experiments were performed with application of M-30 microtrone as a source of electrons for bremsstrahlung spectra production with end point energies 7.5, 9.5, 11, 11.5, 12, 12.5, 16.5, and 18.5 MeV. Instrumental spectra of Tb specimens were mea...

  8. Fabrication and performance evaluation of the thermoelectric generation and performance measuring system

    Institute of Scientific and Technical Information of China (English)

    Wang Yu; Zheng Wenbo; Wu Zhifei

    2008-01-01

    A novel thermoelectric generating and performance measuring system (TGPMS) was designed and fabricated. TGPMS can not only achieve the function of thermoelectric generation, but also measure the thermoelectric performance parameters of the bismuth-telluride-based thermoelectric device accurately. These thermoelectric performance parameters mainly include the dependence of the Seebeck coefficient of the thermoelectric device on the device's temperature in the low temperature range (about 40~190℃), and the dependence of the power output and thermoelectric conversion efficiency on the temperature difference or output load. With the optimum load, the optimal value of the power output is 3.39W when the temperature difference reaches 231.2℃, and the optimal value of the conversion efficiency is 3.22% when the temperature difference reaches 208.9℃. TGPMS provides an experimental foundation for the application of the thermoelectric generators in the space field.

  9. Quality initiatives: Key performance indicators for measuring and improving radiology department performance.

    Science.gov (United States)

    Abujudeh, Hani H; Kaewlai, Rathachai; Asfaw, Benjamin A; Thrall, James H

    2010-05-01

    Key performance indicators (KPIs) are financial and nonfinancial measures that are used to define and evaluate the success of an organization. KPIs differ, depending on the nature of the organization and the organizational strategy; they are devised to help evaluate the progress of an organization toward achieving its long-term goals and fulfilling its vision. In healthcare organizations, performance assessment is especially critical for the development of best practices that can lead to improved outcomes in patient care, and KPIs have been incorporated into many healthcare management systems. In the future, radiology-specific KPIs such as those in use at the authors' institution may help provide a framework for measuring performance in radiology practice.

  10. Performance evaluation of D-SPECT: a novel SPECT system for nuclear cardiology.

    Science.gov (United States)

    Erlandsson, Kjell; Kacperski, Krzysztof; van Gramberg, Dean; Hutton, Brian F

    2009-05-07

    D-SPECT (Spectrum Dynamics, Israel) is a novel SPECT system for cardiac perfusion studies. Based on CZT detectors, region-centric scanning, high-sensitivity collimators and resolution recovery, it offers potential advantages over conventional systems. A series of measurements were made on a beta-version D-SPECT system in order to evaluate its performance in terms of energy resolution, scatter fraction, sensitivity, count rate capability and resolution. Corresponding measurements were also done on a conventional SPECT system (CS) for comparison. The energy resolution of the D-SPECT system at 140 keV was 5.5% (CS: 9.25%), the scatter fraction 30% (CS: 34%), the planar sensitivity 398 s(-1) MBq(-1) per head ((99m)Tc, 10 cm) (CS: 72 s(-1) MBq(-1)), and the tomographic sensitivity in the heart region was in the range 647-1107 s(-1) MBq(-1) (CS: 141 s(-1) MBq(-1)). The count rate increased linearly with increasing activity up to 1.44 M s(-1). The intrinsic resolution was equal to the pixel size, 2.46 mm (CS: 3.8 mm). The average reconstructed resolution using the standard clinical filter was 12.5 mm (CS: 13.7 mm). The D-SPECT has superior sensitivity to that of a conventional system with similar spatial resolution. It also has excellent energy resolution and count rate characteristics, which should prove useful in dynamic and dual radionuclide studies.

  11. Performance evaluation of D-SPECT: a novel SPECT system for nuclear cardiology

    Science.gov (United States)

    Erlandsson, Kjell; Kacperski, Krzysztof; van Gramberg, Dean; Hutton, Brian F.

    2009-05-01

    D-SPECT (Spectrum Dynamics, Israel) is a novel SPECT system for cardiac perfusion studies. Based on CZT detectors, region-centric scanning, high-sensitivity collimators and resolution recovery, it offers potential advantages over conventional systems. A series of measurements were made on a β-version D-SPECT system in order to evaluate its performance in terms of energy resolution, scatter fraction, sensitivity, count rate capability and resolution. Corresponding measurements were also done on a conventional SPECT system (CS) for comparison. The energy resolution of the D-SPECT system at 140 keV was 5.5% (CS: 9.25%), the scatter fraction 30% (CS: 34%), the planar sensitivity 398 s-1 MBq-1 per head (99mTc, 10 cm) (CS: 72 s-1 MBq-1), and the tomographic sensitivity in the heart region was in the range 647-1107 s-1 MBq-1 (CS: 141 s-1 MBq-1). The count rate increased linearly with increasing activity up to 1.44 M s-1. The intrinsic resolution was equal to the pixel size, 2.46 mm (CS: 3.8 mm). The average reconstructed resolution using the standard clinical filter was 12.5 mm (CS: 13.7 mm). The D-SPECT has superior sensitivity to that of a conventional system with similar spatial resolution. It also has excellent energy resolution and count rate characteristics, which should prove useful in dynamic and dual radionuclide studies.

  12. Measuring Human Performance within Computer Security Incident Response Teams

    Energy Technology Data Exchange (ETDEWEB)

    McClain, Jonathan T. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Silva, Austin Ray [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Avina, Glory Emmanuel [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Forsythe, James C. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2015-09-01

    Human performance has become a pertinen t issue within cyber security. However, this research has been stymied by the limited availability of expert cyber security professionals. This is partly attributable to the ongoing workload faced by cyber security professionals, which is compound ed by the limited number of qualified personnel and turnover of p ersonnel across organizations. Additionally, it is difficult to conduct research, and particularly, openly published research, due to the sensitivity inherent to cyber ope rations at most orga nizations. As an alternative, the current research has focused on data collection during cyb er security training exercises. These events draw individuals with a range of knowledge and experience extending from seasoned professionals to recent college gradu ates to college students. The current paper describes research involving data collection at two separate cyber security exercises. This data collection involved multiple measures which included behavioral performance based on human - machine transactions and questionnaire - based assessments of cyber security experience.

  13. Measurement of Grit and Correlation to Student Pharmacist Academic Performance.

    Science.gov (United States)

    Pate, Adam N; Payakachat, Nalin; Harrell, T Kristopher; Pate, Kristen A; Caldwell, David J; Franks, Amy M

    2017-08-01

    Objective. To describe grittiness of students from three pharmacy schools and determine if grit is associated with academic performance measures. Methods. Pharmacy students completed an electronic questionnaire that included the Short Grit Scale (Grit-S). Associations were determined using logistic regression. Results. Grit-S total score was a significant and independent predictor for participants who reported a GPA ≥3.5, and Consistency of Interest (COI) and Perseverance of Effort (POE) domain scores were significantly higher compared to participants with a GPA of 3.0-3.49. Participants reporting a D or F had slightly lower average total Grit-S scores and COI domain scores compared to participants who did not. In addition, the group who reported a GPA GPA of 3.0-3.4. Conclusion. Grittiness may be associated with student pharmacist academic performance and the Grit-S Scale may have substantive implications for use in pharmacy programs.

  14. Analysis of microgravity measurements performed during D1

    Science.gov (United States)

    Hamacher, H.; Jilg, R.; Merbold, U.

    Characteristic features and results of D1 μg-measurements are discussed as performed in the Material Science Double Rack (MSDR) and MEDEA. The μg-data are analysed with respect to selected mission events such as thruster firings for attitude control, operations of Spacelab experiment facilities, vestibular experiments and crew activities. The origins are divided into orbit, vehicle and experiment induced perturbations. It has been found that the μg-environment is dictated mainly by payload induced perturbations. To reduce the μg-level, the design of some experiment facilities has to be improved. In addition, strongly disturbing experiments and very sensitive investigations should be performed in separate mission phases.

  15. A Generic Framework of Performance Measurement in Networked Enterprises

    Science.gov (United States)

    Kim, Duk-Hyun; Kim, Cheolhan

    Performance measurement (PM) is essential for managing networked enterprises (NEs) because it greatly affects the effectiveness of collaboration among members of NE.PM in NE requires somewhat different approaches from PM in a single enterprise because of heterogeneity, dynamism, and complexity of NE’s. This paper introduces a generic framework of PM in NE (we call it NEPM) based on the Balanced Scorecard (BSC) approach. In NEPM key performance indicators and cause-and-effect relationships among them are defined in a generic strategy map. NEPM could be applied to various types of NEs after specializing KPIs and relationships among them. Effectiveness of NEPM is shown through a case study of some Korean NEs.

  16. Performance Measurement in Social Care Services for Older People

    Directory of Open Access Journals (Sweden)

    Mihaela GHENŢA

    2015-12-01

    Full Text Available Taking into account the current social and economic environment, managers of social organizations are under a constant pressure to get results and to optimize costs with an efficient allocation of resources. Performance management allows measuring the results of public and private organizations which provide social care for the elderly. The potential of social services to respond to current challenges is linked not only to financial resources, but also to the ability of social managers to develop methods, techniques and innovative practices. Since innovation requires change, the providers should promote management practices and structures that favour the expression of new ideas. The article presents the results of a mixed-type research methodology based on qualitative and quantitative methods, such as the in-depth semi-structured interview, focus-group, and questionnaire with public policymakers, as well as with private and public providers of social services for older people. Research was conducted during October – November 2014 and the instruments were developed by the team members. The aim of the research has been to find out the importance of performance and performance measurement among public and private managers of social services for older people, and also from the perspective of policymakers. Conclusions reveal that the managers of social services for elderly should be aware that measurement alone is not sufficient, as long as the information obtained is not used in other decision-making processes like: strategic planning, quality management, budgeting activities, increased productivity. The findings have implications for practitioners, researchers and policymakers.

  17. Measurement-Based Performance Evaluation of Advanced MIMO Transceiver Designs

    Science.gov (United States)

    Trautwein, Uwe; Schneider, Christian; Thomä, Reiner

    2005-12-01

    This paper describes the methodology and the results of performance investigations on a multiple-input multiple-output (MIMO) transceiver scheme for frequency-selective radio channels. The method relies on offline simulations and employs real-time MIMO channel sounder measurement data to ensure a realistic channel modeling. Thus it can be classified in between the performance evaluation using some predefined channel models and the evaluation of a prototype hardware in field experiments. New aspects for the simulation setup are discussed, which are frequently ignored when using simpler model-based evaluations. Example simulations are provided for an iterative ("turbo") MIMO equalizer concept. The dependency of the achievable bit error rate performance on the propagation characteristics and on the variation in some system design parameters is shown, whereas the antenna constellation is of particular concern for MIMO systems. Although in many of the considered constellations turbo MIMO equalization appears feasible in real field scenarios, there exist cases with poor performance as well, indicating that in practical applications link adaptation of the transmitter and receiver processing to the environment is necessary.

  18. Measurement-Based Performance Evaluation of Advanced MIMO Transceiver Designs

    Directory of Open Access Journals (Sweden)

    Schneider Christian

    2005-01-01

    Full Text Available This paper describes the methodology and the results of performance investigations on a multiple-input multiple-output (MIMO transceiver scheme for frequency-selective radio channels. The method relies on offline simulations and employs real-time MIMO channel sounder measurement data to ensure a realistic channel modeling. Thus it can be classified in between the performance evaluation using some predefined channel models and the evaluation of a prototype hardware in field experiments. New aspects for the simulation setup are discussed, which are frequently ignored when using simpler model-based evaluations. Example simulations are provided for an iterative ("turbo" MIMO equalizer concept. The dependency of the achievable bit error rate performance on the propagation characteristics and on the variation in some system design parameters is shown, whereas the antenna constellation is of particular concern for MIMO systems. Although in many of the considered constellations turbo MIMO equalization appears feasible in real field scenarios, there exist cases with poor performance as well, indicating that in practical applications link adaptation of the transmitter and receiver processing to the environment is necessary.

  19. Optimisation of key performance measures in air cargo demand management

    Directory of Open Access Journals (Sweden)

    Alexander May

    2014-03-01

    Full Text Available This article sought to facilitate the optimisation of key performance measures utilised for demand management in air cargo operations. The focus was on the Revenue Management team at Virgin Atlantic Cargo and a fuzzy group decision-making method was used. Utilising intelligent fuzzy multi-criteria methods, the authors generated a ranking order of ten key outcome-based performance indicators for Virgin Atlantic air cargo Revenue Management. The result of this industry-driven study showed that for Air Cargo Revenue Management, ‘Network Optimisation’ represents a critical outcome-based performance indicator. This collaborative study contributes to existing logistics management literature, especially in the area of Revenue Management, and it seeks to enhance Revenue Management practice. It also provides a platform for Air Cargo operators seeking to improve reliability values for their key performance indicators as a means of enhancing operational monitoring power.

  20. Performance evaluation of neuro-PET using silicon photomultipliers

    Energy Technology Data Exchange (ETDEWEB)

    Jung, Jiwoong; Choi, Yong, E-mail: ychoi@sogang.ac.kr; Jung, Jin Ho, E-mail: jinho1115@gmail.com; Kim, Sangsu; Im, Ki Chun

    2016-05-21

    Recently, we have developed the second prototype Silicon photomultiplier (SiPM) based positron emission tomography (PET) scanner for human brain imaging. The PET system was comprised of detector block which consisted of 4×4 SiPMs and 4×4 Lutetium Yttrium Orthosilicate arrays, charge signal transmission method, high density position decoder circuit and FPGA-embedded ADC boards. The purpose of this study was to evaluate the performance of the newly developed neuro-PET system. The energy resolution, timing resolution, spatial resolution, sensitivity, stability of the photo-peak position and count rate performance were measured. Tomographic image of 3D Hoffman brain phantom was also acquired to evaluate imaging capability of the neuro-PET. The average energy and timing resolutions measured for 511 keV gamma rays were 17±0.1% and 3±0.3 ns, respectively. Spatial resolution and sensitivity at the center of field of view (FOV) were 3.1 mm and 0.8%, respectively. The average scatter fraction was 0.4 with an energy window of 350–650 keV. The maximum true count rate and maximum NECR were measured as 43.3 kcps and 6.5 kcps at an activity concentration of 16.7 kBq/ml and 5.5 kBq/ml, respectively. Long-term stability results show that there was no significant change in the photo-peak position, energy resolution and count rate for 60 days. Phantom imaging studies were performed and they demonstrated the feasibility for high quality brain imaging. The performance tests and imaging results indicate that the newly developed PET is useful for brain imaging studies, if the axial FOV is extended to improve the system sensitivity.

  1. Performance evaluation of neuro-PET using silicon photomultipliers

    Science.gov (United States)

    Jung, Jiwoong; Choi, Yong; Jung, Jin Ho; Kim, Sangsu; Im, Ki Chun

    2016-05-01

    Recently, we have developed the second prototype Silicon photomultiplier (SiPM) based positron emission tomography (PET) scanner for human brain imaging. The PET system was comprised of detector block which consisted of 4×4 SiPMs and 4×4 Lutetium Yttrium Orthosilicate arrays, charge signal transmission method, high density position decoder circuit and FPGA-embedded ADC boards. The purpose of this study was to evaluate the performance of the newly developed neuro-PET system. The energy resolution, timing resolution, spatial resolution, sensitivity, stability of the photo-peak position and count rate performance were measured. Tomographic image of 3D Hoffman brain phantom was also acquired to evaluate imaging capability of the neuro-PET. The average energy and timing resolutions measured for 511 keV gamma rays were 17±0.1% and 3±0.3 ns, respectively. Spatial resolution and sensitivity at the center of field of view (FOV) were 3.1 mm and 0.8%, respectively. The average scatter fraction was 0.4 with an energy window of 350-650 keV. The maximum true count rate and maximum NECR were measured as 43.3 kcps and 6.5 kcps at an activity concentration of 16.7 kBq/ml and 5.5 kBq/ml, respectively. Long-term stability results show that there was no significant change in the photo-peak position, energy resolution and count rate for 60 days. Phantom imaging studies were performed and they demonstrated the feasibility for high quality brain imaging. The performance tests and imaging results indicate that the newly developed PET is useful for brain imaging studies, if the axial FOV is extended to improve the system sensitivity.

  2. Image Quality Assessment for Performance Evaluation of Focus Measure Operators

    Directory of Open Access Journals (Sweden)

    Farida Memon

    2015-10-01

    Full Text Available This paper presents the performance evaluation of eight focus measure operators namely Image CURV (Curvature, GRAE (Gradient Energy, HISE (Histogram Entropy, LAPM (Modified Laplacian, LAPV (Variance of Laplacian, LAPD (Diagonal Laplacian, LAP3 (Laplacian in 3D Window and WAVS (Sum of Wavelet Coefficients. Statistical matrics such as MSE (Mean Squared Error, PNSR (Peak Signal to Noise Ratio, SC (Structural Content, NCC (Normalized Cross Correlation, MD (Maximum Difference and NAE (Normalized Absolute Error are used to evaluate stated focus measures in this research. . FR (Full Reference method of the image quality assessment is utilized in this paper. Results indicate that LAPD method is comparatively better than other seven focus operators at typical imaging conditions

  3. Performance measures for mass customization strategies in an ETO environment

    DEFF Research Database (Denmark)

    Bonev, Martin; Hvam, Lars

    2013-01-01

    When following mass customization (MC) principles, manufacturing companies have to consider several aspects. Complexity is thereby seen as a major challenge to be handled. Especially for ETO companies the movement towards MC is much more complex, as products are not standardized, processes are se...... are seldom automated and little control over the customer portfolio is obtained. Based on case studies, this research proposes a new way of effectively and efficiently implementing MC strategies. It closely investigates deviations between contribution margins and between pre- and post......-calculations of operational measures. The results show the negative impact of high deviations on the cor-responding performance....

  4. Diazepam and Its Effects on Psychophysiological Measures of Performance.

    Science.gov (United States)

    1985-04-01

    to the benzodoazepines. Chlordiazepoxide , nitrazepam, oxazepam, and diazepam have generally been found to impair psy- chomotor skills, depress critical...RFAML-TR-95-926 UNC LASIIE F365-E--011F 615 ML MENhhhhhh T .2 13 N 1. It. %MbIMW~dbdSb AFAMRL-TR-85-036 (0 DIAZEPAM AND ITS EFFECTS ON...Performance " Test Battery ° Diazepam / Evoked Response " Valium - Behavioral Measures ABSTRACT iContinue on reverse if necessary and identify by oI

  5. Measurements of high-contrast starshade performance in the field

    Science.gov (United States)

    Smith, Daniel; Warwick, Steven; Glassman, Tiffany M.; Novicki, Megan C.; Richards, Michael C.; Harness, Anthony; Patterson, Keith D.

    2016-07-01

    The external starshade is a method for the direct detection and spectral characterization of terrestrial planets around other stars, a key goal identified in ASTRO2010. In an effort to validate the starlight-suppression performance of the starshade, we have measured contrast better than 1×10-9 using 60 cm starshades at points just beyond the starshade tips. These measurements were made over a 50% spectral bandpass, using an incoherent light source (a white LED), and in challenging outdoor test environments. Our experimental setup is designed to provide starshade to telescope separation and telescope aperture size that are scaled as closely as possible to the flight system. The measurements confirm not only the overall starlight-suppression capability of the starshade concept but also the robustness of the setup to optical disturbances such as atmospheric effects at the test site. The spectral coverage is limited only by the optics and detectors in our test setup, not by the starshade itself. Here we describe our latest results as well as detailed comparisons of the measured results to model predictions. Plans and status of the next phase of ground testing are also discussed.

  6. Investigating the limits of PET/CT imaging at very low true count rates and high random fractions in ion-beam therapy monitoring

    Energy Technology Data Exchange (ETDEWEB)

    Kurz, Christopher, E-mail: Christopher.Kurz@physik.uni-muenchen.de; Bauer, Julia [Heidelberg Ion-Beam Therapy Center and Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg 69120 (Germany); Conti, Maurizio; Guérin, Laura; Eriksson, Lars [Siemens Healthcare Molecular Imaging, Knoxville, Tennessee 37932 (United States); Parodi, Katia [Heidelberg Ion-Beam Therapy Center and Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg 69120, Germany and Department of Experimental Physics – Medical Physics, Ludwig-Maximilians-University, Munich 85748 (Germany)

    2015-07-15

    Purpose: External beam radiotherapy with protons and heavier ions enables a tighter conformation of the applied dose to arbitrarily shaped tumor volumes with respect to photons, but is more sensitive to uncertainties in the radiotherapeutic treatment chain. Consequently, an independent verification of the applied treatment is highly desirable. For this purpose, the irradiation-induced β{sup +}-emitter distribution within the patient is detected shortly after irradiation by a commercial full-ring positron emission tomography/x-ray computed tomography (PET/CT) scanner installed next to the treatment rooms at the Heidelberg Ion-Beam Therapy Center (HIT). A major challenge to this approach is posed by the small number of detected coincidences. This contribution aims at characterizing the performance of the used PET/CT device and identifying the best-performing reconstruction algorithm under the particular statistical conditions of PET-based treatment monitoring. Moreover, this study addresses the impact of radiation background from the intrinsically radioactive lutetium-oxyorthosilicate (LSO)-based detectors at low counts. Methods: The authors have acquired 30 subsequent PET scans of a cylindrical phantom emulating a patientlike activity pattern and spanning the entire patient counting regime in terms of true coincidences and random fractions (RFs). Accuracy and precision of activity quantification, image noise, and geometrical fidelity of the scanner have been investigated for various reconstruction algorithms and settings in order to identify a practical, well-suited reconstruction scheme for PET-based treatment verification. Truncated listmode data have been utilized for separating the effects of small true count numbers and high RFs on the reconstructed images. A corresponding simulation study enabled extending the results to an even wider range of counting statistics and to additionally investigate the impact of scatter coincidences. Eventually, the recommended

  7. Development of a compact tritium activity monitor and first tritium measurements

    Energy Technology Data Exchange (ETDEWEB)

    Röllig, M., E-mail: marco.roellig@kit.edu; Ebenhöch, S.; Niemes, S.; Priester, F.; Sturm, M.

    2015-11-15

    Highlights: • We report about experimental results of a new tritium activity monitoring system using the BIXS method. • The system is compact and easy to implement. It has a small dead volume of about 28 cm{sup 3} and can be used in a flow-through mode. • Gold coated surfaces are used to improve significantly count rate stability of the system and to reduce stored inventory. - Abstract: To develop a convenient tool for in-line tritium gas monitoring, the TRitium Activity Chamber Experiment (TRACE) was built and commissioned at the Tritium Laboratory Karlsruhe (TLK). The detection system is based on beta-induced X-ray spectrometry (BIXS), which observes the bremsstrahlung X-rays generated by tritium decay electrons in a gold layer. The setup features a measuring chamber with a gold-coated beryllium window and a silicon drift detector. Such a detection system can be used for accountancy and process control in tritium processing facilities like the Karlsruhe Tritium Neutrino Experiment (KATRIN). First characterization measurements with tritium were performed. The system demonstrates a linear response between tritium partial pressure and the integral count rate in a pressure range of 1 Pa up to 60 Pa. Within 100 s measurement time the lower detection limit for tritium is (143.63 ± 5.06) · 10{sup 4} Bq. The system stability of TRACE is limited by a linear decrease of integral count rate of 0.041 %/h. This decrease is most probably due to exchange interactions between tritium and the stainless steel walls. By reducing the interaction surface with stainless steel, the decrease of the integral count rate was reduced to 0.008 %/h. Based on the first results shown in this paper it can be concluded that TRACE is a promising complement to existing tritium monitoring tools.

  8. Relationships between National Football League combine performance measures.

    Science.gov (United States)

    Robbins, Daniel W

    2012-01-01

    The purpose of this study was to investigate the relationships between the athletic skills measured at the National Football League (NFL) combine. The combine comprises the following tests: 36.6-m sprint with split times at 9.1 and 18.3 m, vertical and horizontal jumps, 18.3-m shuttle run, 3-cone drill, and 102.1-kg bench press. Draftees to the NFL who participated in the annual combine from 2005 to 2009 were included in the study (n = 1,136). Pearson's (r) correlations were calculated to determine the relationships between the tests, and coefficients of determination (r) were used to determine common variance. The 9.1-, 18.3-, and 36.6-m sprint times are nearly perfectly correlated (r ranges from 0.900 to 0.967) as are the change-of-direction ability tests, 18.3-m shuttle run, and 3-cone drill (r = 0.948), suggesting similar skills are being measured. Performance in both jumping tasks is more strongly associated with longer sprint distances, suggesting mechanisms such as the stretch-shortening cycle may be more important at maximal, or near-maximal, speeds. The correlations between change-of-direction ability and sprinting and jumping are generally much weaker (r ranges from 0.250 to -0.653), suggesting less association and independent motor skills. Although not particularly large correlation coefficients, bench press performance is positively correlated with outcomes in all running drills and inversely correlated with jump abilities, suggesting that in the observed cohort, upper body strength may be of little benefit to these tasks. Incorporation of a nonacceleration influenced (i.e., moving start) measure of maximal speed may be preferred if the intention of a test battery is to measure independent motor skills. Further, when constructing test batteries, either the 18.3-m shuttle or 3-cone drill is likely sufficient as a measure of change-of-direction ability. Test batteries should be constructed to measure independent motor skills.

  9. Canadian Occupational Performance Measure performance scale: Validity and responsiveness in chronic pain

    Directory of Open Access Journals (Sweden)

    Mieke G. Nieuwenhuizen, MSc, PT

    2014-09-01

    Full Text Available The construct validity and construct responsiveness of the performance scale of the Canadian Occupational Performance Measure (COPM was measured in 87 newly admitted patients with chronic pain attending an outpatient rehabilitation clinic. At admission and after 12 wk, patients completed a COPM interview, the Pain Disability Index (PDI, and the RAND 36-Item Health Survey (RAND-36. We determined the construct validity of the COPM by correlations between the COPM performance scale (COPM-P, the PDI, and the RAND-36 at admission. Construct responsiveness was assessed by calculating the correlations between the change scores (n = 57. The COPM-P did not significantly correlate with the PDI (r = −0.260 or with any subscale of the RAND-36 (r = −0.007 to 0.248. Only a moderate correlation was found between change scores of the COPM-P and PDI (r = −0.380 and weak to moderate correlations were found between change scores of the COPM-P and the RAND-36 (r = −0.031 to 0.388, with the higher correlations for the physical functioning, social functioning, and role limitations (physical subscales. In patients with chronic pain attending our rehabilitation program, the COPM-P measures something different than the RAND-36 or PDI. Therefore, construct validity of the COPM-P was not confirmed by our data. We were not able to find support for the COPM-P to detect changes in occupational performance.

  10. Canadian Occupational Performance Measure performance scale: validity and responsiveness in chronic pain.

    Science.gov (United States)

    Nieuwenhuizen, Mieke G; de Groot, Sonja; Janssen, Thomas W J; van der Maas, Lia C C; Beckerman, Heleen

    2014-01-01

    The construct validity and construct responsiveness of the performance scale of the Canadian Occupational Performance Measure (COPM) was measured in 87 newly admitted patients with chronic pain attending an outpatient rehabilitation clinic. At admission and after 12 wk, patients completed a COPM interview, the Pain Disability Index (PDI), and the RAND 36-Item Health Survey (RAND-36). We determined the construct validity of the COPM by correlations between the COPM performance scale (COPM-P), the PDI, and the RAND-36 at admission. Construct responsiveness was assessed by calculating the correlations between the change scores (n = 57). The COPM-P did not significantly correlate with the PDI (r = -0.260) or with any subscale of the RAND-36 (r = -0.007 to 0.248). Only a moderate correlation was found between change scores of the COPM-P and PDI (r = -0.380) and weak to moderate correlations were found between change scores of the COPM-P and the RAND-36 (r = -0.031 to 0.388), with the higher correlations for the physical functioning, social functioning, and role limitations (physical) subscales. In patients with chronic pain attending our rehabilitation program, the COPM-P measures something different than the RAND-36 or PDI. Therefore, construct validity of the COPM-P was not confirmed by our data. We were not able to find support for the COPM-P to detect changes in occupational performance.

  11. Classroom Composition and Measured Teacher Performance: What Do Teacher Observation Scores Really Measure?

    Science.gov (United States)

    Steinberg, Matthew P.; Garrett, Rachel

    2016-01-01

    As states and districts implement more rigorous teacher evaluation systems, measures of teacher performance are increasingly being used to support instruction and inform retention decisions. Classroom observations take a central role in these systems, accounting for the majority of teacher ratings upon which accountability decisions are based.…

  12. Mathematics Curriculum Based Measurement to Predict State Test Performance: A Comparison of Measures and Methods

    Science.gov (United States)

    Stevens, Olinger; Leigh, Erika

    2012-01-01

    Scope and Method of Study: The purpose of the study is to use an empirical approach to identify a simple, economical, efficient, and technically adequate performance measure that teachers can use to assess student growth in mathematics. The current study has been designed to expand the body of research for math CBM to further examine technical…

  13. Performance measurements of multilayer insulation at variable cold temperature

    Science.gov (United States)

    Funke, Thomas; Haberstroh, Christoph

    2012-06-01

    Multilayer insulation (MLI) is commonly used in most cryogenic devices such as LHe-cryostats or superconductive cables. Typically thermal performance measurements have been carried out using bath cryostats. Inherent to all this devices is a fixed cold temperature at the boiling point of the particular cryogenic liquid. A recent approach for cryogenic pressure vessels covers a broad temperature range, i.e. hydrogen storage from 20 K to ambient temperature. Thus, a new calorimeter cryostat has been designed at TU Dresden to meet these requirements. The design as a flow cryostat allows the measurement of the thermal performance with variable cold temperature between 20 K and 300 K. It can be operated in vertical as well as in horizontal orientation. The insulation material is wrapped around a nearly isothermal cylinder which is held at the desired temperature by a cooling fluid. Preferably LHe respectively helium cold gas is used. Several design features reduce undesired interference errors. It is reported about design and equipment of this cryostat plus first experiences in operation

  14. Fleet matching performance for multiple registration measurement tools

    Science.gov (United States)

    Beyer, D.; Bläsing, C.; Boehm, K.; Heisig, S.; Seidel, D.

    2013-09-01

    Currently semiconductor industry drives the 193nm lithography to its limits, using techniques like double exposure, double patterning, mask-source optimisation and inverse lithography. These requirements trend to full in-die measurement capability of photomask metrology for registration. Especially, overlay becomes more and more critical and must be ensured on every die. For this, Carl Zeiss SMS has developed the next generation photomask registration and overlay metrology tool PROVE which is already well established in the market. To ensure in-die measurement capability, sophisticated image analysis methods based on 2D correlations have been developed. A key component for registration tool users is the cross site manufacturing flexibility given by the matching capability of all its metrology tools. Therefore all PROVE tools offer a tool matching procedure based on 2D Golden Grid references. In this paper we first review the optimal length standard and golden grid matching procedures of modern registration metrology tools. Systematic errors in fleet matching based on illumination differences, thermal expansionbased issues or line width roughness are addressed. The tool matching performance of PROVE tools is demonstrated by comparing up to 7 different tools. All tools are well within accuracy and long-term repeatability specification which considerably reduces the statistical error contribution of the tool matching performance. For grid matched tools the final cross tool registration error is shown to be below 1nm.

  15. Performance Measurements and Technology Demonstration of the VASIMR® VX-200

    Science.gov (United States)

    Longmier, B. W.; Bering, E. A.; Squire, J. P.; Glover, T. W.; Cassady, L. D.; Ilin, A. V.; Carter, M. D.; Olsen, C. S.; McCaskill, G. E.; Chang Díaz, F.

    2010-12-01

    Recent progress is discussed in the development of an advanced RF electric propulsion engine: the VAriable Specific Impulse Magnetoplasma Rocket (VASIMR®) VX-200, a 200 kW flight-technology prototype. This device is the only known industrial application of the physics of the aurora borealis. Results are presented from first stage only and first stage with booster stage experiments that were performed on the VX-200 using between 60 mg/s and 150 mg/s argon propellant. The plasma source is a helicon discharge that uses whistler mode waves near the lower hybrid frequency. The booster stage uses electromagnetic ion cyclotron wave absorption to accelerate the ions. Measurements of ion flux, ion energy, plasma density and potential gradients, and force density profiles taken in the exhaust plume of the VX-200 are made within a 150 cubic meter vacuum chamber and are presented in the context of individual stage and total engine performance. Measurements include detailed pitch angle scans of the accelerated ions and plasma parameter maps of the exhaust plume. An emphasis will be given to our ability to probe wave-particle interactions in the exhaust plume. We are now in a position to conduct more detailed auroral simulation studies and are actively seeking collaborators.

  16. A Hybrid Fuzzy Model for Lean Product Development Performance Measurement

    Science.gov (United States)

    Osezua Aikhuele, Daniel; Mohd Turan, Faiz

    2016-02-01

    In the effort for manufacturing companies to meet up with the emerging consumer demands for mass customized products, many are turning to the application of lean in their product development process, and this is gradually moving from being a competitive advantage to a necessity. However, due to lack of clear understanding of the lean performance measurements, many of these companies are unable to implement and fully integrated the lean principle into their product development process. Extensive literature shows that only few studies have focus systematically on the lean product development performance (LPDP) evaluation. In order to fill this gap, the study therefore proposed a novel hybrid model based on Fuzzy Reasoning Approach (FRA), and the extension of Fuzzy-AHP and Fuzzy-TOPSIS methods for the assessment of the LPDP. Unlike the existing methods, the model considers the importance weight of each of the decision makers (Experts) since the performance criteria/attributes are required to be rated, and these experts have different level of expertise. The rating is done using a new fuzzy Likert rating scale (membership-scale) which is designed such that it can address problems resulting from information lost/distortion due to closed-form scaling and the ordinal nature of the existing Likert scale.

  17. Storage Capacity Modeling of Reservoir Systems Employing Performance Measures

    Directory of Open Access Journals (Sweden)

    Issa Saket Oskoui

    2014-12-01

    Full Text Available Developing a prediction relationship for total (i.e. within-year plus over-year storage capacity of reservoir systems is beneficial because it can be used as an alternative to the analysis of reservoirs during designing stage and gives an opportunity to planner to examine and compare different cases in a fraction of time required for complete analysis where detailed analysis is not necessary. Existing relationships for storage capacity are mostly capable of estimating over-year storage capacity and total storage capacity can be obtained through relationships for adjusting over-year capacity and there is no independent relationship to estimate total storage capacity. Moreover these relationships do not involve vulnerability performance criterion and are not verified for Malaysia Rivers. In this study two different reservoirs in Southern part of Peninsular Malaysia, Melaka and Muar, are analyzed through a Monte Carlo simulation approach involving performance metrics. Subsequently the storage capacity results of the simulation are compared with those of the well-known existing equations. It is observed that existing models may not predict total capacity appropriately for Malaysian reservoirs. Consequently, applying the simulation results, two separate regression equations are developed to model total storage capacity of study reservoirs employing time based reliability and vulnerability performance measures.

  18. Measuring the impact of HRM on organizational performance

    Directory of Open Access Journals (Sweden)

    Anastasia A. Katou

    2008-12-01

    Full Text Available Normal 0 21 false false false ES ZH-CN X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Tabla normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman","serif"; mso-ansi-language:ES-TRAD; mso-fareast-language:EN-US;} The purpose of this paper is to measure the impact of HRM on organisational performance in the context of Greece. Data were collected from 178 organisations using a questionnaire survey in the Greek manufacturing sector, and analysed using the ‘structural equation modelling’ methodology. The results indicated that the relationship between HRM policies (resourcing and development, compensation and incentives, involvement and job design and organisational performance is partially mediated through HRM outcomes (skills, attitudes, behaviour, and it is influenced by business strategies (cost, quality, innovation. Thus, the contribution of this study for academics and practitioners is that HRM policies associated with business strategies will affect organisational performance through HRM outcomes.

  19. Performance comparison of fiber optic tips in interferrometric displacement measurement

    Energy Technology Data Exchange (ETDEWEB)

    Moro, Erik A [Los Alamos National Laboratory; Puckett, Anthony D [Los Alamos National Laboratory; Grahn, Rick [UNM; Karimi, Hussain [UCSD; Wilson, Kyle [ROSE HULMAN INSTITUTE OT TECH.

    2010-10-21

    Fiber optic displacement sensors have many potential advantages over traditional displacement measurement techniques, including small size, immunity to electromagnetic interference, electrical isolation, and high resolution. In this report, we focus on an interferometric fiber optic sensor, where the gap between the fiber tip and the device under test forms a Fabry-Perot resonant cavity. An optical interrogator measures the reflected intensity at wavelengths ranging from 1510 to 1590 nm. The spacing between resonant frequencies allows us to determine the distance from the tip to the device under test. We consider ferrule connector angled physical contact (FC/APC), ferrule connector ultra physical contact (FC/UPC) and unpolished cleaved tips and compare their influence on sensor performance. A plane wave propagation model is proposed for predicting tip effects. Comparisons are made on the basis of sensor measurement range, resolution, and sensitivity to changes in test conditions. In this paper, we discuss the experimental setup, detail our analysis, and present test results with recommendations for the applications of each tip.

  20. The reliability of accelerometry to measure weightlifting performance.

    Science.gov (United States)

    Sato, Kimitake; Sands, William A; Stone, Michael H

    2012-11-01

    The purposes of the study were to track weightlifters' barbell acceleration with a portable accelerometer over three training sessions to examine test-retest reliability and to compare peak barbell acceleration at different training intensities. Twelve nationally ranked weightlifters volunteered for this study. The portable accelerometer was attached to the right side of the barbell to measure barbell resultant acceleration during the snatch lift at a sampling frequency of 100 Hz. The data were collected over three training sessions at intensity levels of 80%, 85%, and 90% of one repetition maximum. The data were analyzed using intra-class correlation coefficients (ICCs) for the three training sessions and one-way repeated measure ANOVA to compare the difference in peak barbell acceleration at three intensities. Results showed that the device was highly reliable with an ICC of 0.88 and 95% confidence interval of 0.81-0.93. There were significant differences in peak barbell acceleration at various lifting intensities, indicating a decline of the acceleration as the mass of the barbell became heavier. The portable accelerometer seems useful in measuring barbell acceleration data, which can be analyzed in future studies to monitor a weightlifter's performance in a practical setting instead of testing at a laboratory.

  1. Gamma Astrometric Measurement Experiment (GAME) - Implementation and performance

    Science.gov (United States)

    Gai, Mario; Gai, Mario; Vecchiato, Alberto; Lattanzi, Mario G.; Ligori, Sebastiano; Loreggia, Davide

    The GAME mission concept is aimed at test of the General Relativity, through very precise measurement of the gravitational deflection of light by the Sun, by means of an optimised telescope operating in the visible and launched in orbit on a small class satellite. We recall the science motivations, discussed in detail in a separate contribution by Vecchiato et al., and describe the mission requirements derivation, the proposed mission profile, the preliminary payload design and the expected performance. The targeted precision on the "γ" parameter of the Parametrised Post-Newtonian formulation of General Relativity is in the range 10-6 to 10-7 or better, with an improvement of one or two orders of magnitude with respect to the best currently available experimental results. Such precision is suitable to detect possible deviations of γ from the unity value, associated to generalised Einstein models for gravitation, with potentially huge impacts on the cosmological distribution of dark matter and dark energy. The measurement principle is based on the differential astrometric signature on the stellar positions, i.e. on the spatial component of the gravitational effect, rather than the temporal component as in the most recent experiments based on radio link delay timing. Calibration is based on frequent measurement of angular separation of bright sources in stellar fields affected by negligible deflection. The instrument concept is based on a dual field, multiple aperture Fizeau interferometer, observing simultaneously two sky regions close to the Solar limb. A split flat mirror is used to fold the telescope line of sight on two different directions on the sky, separated by a base angle of about 4 degrees, which represents the gauge applied on the sky to measure the desired angular value of deflection. Stability or calibration of the base angle is the key to fulfilling the GAME science goals. An internal laser metrology option is considered for both on ground

  2. Developing safety performance functions incorporating reliability-based risk measures.

    Science.gov (United States)

    Ibrahim, Shewkar El-Bassiouni; Sayed, Tarek

    2011-11-01

    Current geometric design guides provide deterministic standards where the safety margin of the design output is generally unknown and there is little knowledge of the safety implications of deviating from these standards. Several studies have advocated probabilistic geometric design where reliability analysis can be used to account for the uncertainty in the design parameters and to provide a risk measure of the implication of deviation from design standards. However, there is currently no link between measures of design reliability and the quantification of safety using collision frequency. The analysis presented in this paper attempts to bridge this gap by incorporating a reliability-based quantitative risk measure such as the probability of non-compliance (P(nc)) in safety performance functions (SPFs). Establishing this link will allow admitting reliability-based design into traditional benefit-cost analysis and should lead to a wider application of the reliability technique in road design. The present application is concerned with the design of horizontal curves, where the limit state function is defined in terms of the available (supply) and stopping (demand) sight distances. A comprehensive collision and geometric design database of two-lane rural highways is used to investigate the effect of the probability of non-compliance on safety. The reliability analysis was carried out using the First Order Reliability Method (FORM). Two Negative Binomial (NB) SPFs were developed to compare models with and without the reliability-based risk measures. It was found that models incorporating the P(nc) provided a better fit to the data set than the traditional (without risk) NB SPFs for total, injury and fatality (I+F) and property damage only (PDO) collisions.

  3. Technique for Performing Dielectric Property Measurements at Microwave Frequencies

    Science.gov (United States)

    Barmatz, Martin B.; Jackson, Henry W.

    2010-01-01

    A paper discusses the need to perform accurate dielectric property measurements on larger sized samples, particularly liquids at microwave frequencies. These types of measurements cannot be obtained using conventional cavity perturbation methods, particularly for liquids or powdered or granulated solids that require a surrounding container. To solve this problem, a model has been developed for the resonant frequency and quality factor of a cylindrical microwave cavity containing concentric cylindrical samples. This model can then be inverted to obtain the real and imaginary dielectric constants of the material of interest. This approach is based on using exact solutions to Maxwell s equations for the resonant properties of a cylindrical microwave cavity and also using the effective electrical conductivity of the cavity walls that is estimated from the measured empty cavity quality factor. This new approach calculates the complex resonant frequency and associated electromagnetic fields for a cylindrical microwave cavity with lossy walls that is loaded with concentric, axially aligned, lossy dielectric cylindrical samples. In this approach, the calculated complex resonant frequency, consisting of real and imaginary parts, is related to the experimentally measured quantities. Because this approach uses Maxwell's equations to determine the perturbed electromagnetic fields in the cavity with the material(s) inserted, one can calculate the expected wall losses using the fields for the loaded cavity rather than just depending on the value of the fields obtained from the empty cavity quality factor. These additional calculations provide a more accurate determination of the complex dielectric constant of the material being studied. The improved approach will be particularly important when working with larger samples or samples with larger dielectric constants that will further perturb the cavity electromagnetic fields. Also, this approach enables the ability to have a

  4. Measurement of exposure to personnel performing shielding evaluations

    Directory of Open Access Journals (Sweden)

    Leland Page

    2014-03-01

    Full Text Available Purpose: Determine the exposure to personnel accrued while performing shielding evaluations of diagnostic facilities.Methods: Shielding inspections were performed at three sites: a small animal imaging facility, an imaging center consisting of general x-ray, CT, and PET/CT rooms, and a cardiac catheterization lab. The small animal facility was evaluated using two 20 mCi Tc-99m uncollimated sources. The imaging center was evaluated using a 20 mCi source of F-18 for the PET/CT room and a collimated 25 mCi source of Tc-99m for the CT and x-ray rooms. The catheterization lab was evaluated using an uncollimated 35 mCi vial of Tc-99m. Electronic personal dosimeters (Rados RAD-60R, RADOS Technology Oy Turku, Finland were worn by each of the personnel involved in performing shielding inspections. The cumulative exposure reading from the dosimeter for each surveyor was recorded.Results: The surveyor who positioned the open source at the small animal facility had an exposure reading of 3.5 mR in 5.5 hours. Those who were outside the room surveying the barriers had readings of 0 and 0.1 mR in 5 hours. For the cath lab, the surveyor positioning the source had a reading of 0.4 mR in 30 minutes, while those outside had readings of 0 mR. At the imaging center all personnel surveying the PET/CT room with an open F-18 source had readings of 2.0, 1.1, and 2.9 mR in 4 hours. Surveys of the CT and general radiography rooms with a collimated Tc-99m source had readings of 1.2, 0.9, and 0.2mR in 5 hours.Conclusion: The surveyors who were in the room with the sources had the highest exposures. Using a higher energy source (F-18 also led to higher exposures. By using a collimated source, the time to measure each barrier for penetrations was increased, but the surveyors’ exposures were  lower.---------------------------------------Cite this article as: Page L, Dodge C, Li G, Wendt R. Measurement of exposure to personnel performing shielding evaluations. Int J Cancer

  5. 76 FR 74050 - Measured Building Energy Performance Data Taxonomy

    Science.gov (United States)

    2011-11-30

    ... energy performance data taxonomy as part of its DOE Buildings Performance Database project. This... energy performance data taxonomy as part of its DOE Buildings Performance Database project. This... From the Federal Register Online via the Government Publishing Office ] DEPARTMENT OF...

  6. Changes in Handset Performance Measures due to Spherical Radiation Pattern Measurement Uncertainty

    DEFF Research Database (Denmark)

    Nielsen, Jesper Ødum; Pedersen, Gert Frølund

    An important characteristic of a mobile handset is its ability to receive and transmit power. One way to characterize the performance of a handset in this respect is to use measurements of the spherical radiation pattern from which the total radiated power (TRP), total isotropic sensitivity (TIS......), and mean effective gain (MEG) can be computed. Often this kind of measurements are made with a phantom head next to the handsets in order to simulate the influence of a real user. The measured radiation patterns are only expected to be repeatable if the same setup is used, i.e., the same phantom...... and the same mounting of the handset on the phantom. In this work the influence of mounting errors on the TRP, TIS, and MEG is investigated. Knowledge about the error due to incorrect mounting is necessary in determining requirements for both the mounting accuracy as well as for other parts of the measurement...

  7. Electron Identification Performance and First Measurement of $W \\to e + \

    CERN Document Server

    Ueno, Rynichi

    2010-01-01

    The identification of electrons is important for the ATLAS experiment because electrons are present in many interactions of interest produced at the Large Hadron Collider. A deep knowledge of the detector, the electron identification algorithms, and the calibration techniques are crucial in order to accomplish this task. This thesis work presents a Monte Carlo study using electrons from the W —> e + v process to evaluate the performance of the ATLAS electromagnetic calorimeter. A significant number of electrons was produced in the early ATLAS collision runs at centre-of-mass energies of 900 GeV and 7 TeV between November 2009 and April 2010, and their properties are presented. Finally, a first measurement of W —> e + v process with the ATLAS experiment was successfully accomplished with the first C = 1.0 nb_ 1 of data at the 7 TeV collision energy, and the properties of the W candidates are also detailed.

  8. A Comparative Study for Performance Measurement of Selected Security Tools

    Directory of Open Access Journals (Sweden)

    Bhaskar.V. Patil,

    2010-10-01

    Full Text Available Today’s enterprise networks are distributed to different geographical locations and applications are more centrally located, this technological enhancement offers new flexible opportunities also measure security threats poses in the networks. These threats can external or Internal, external threats divided as hacking, virus attack, Trojans, worms etc. These threats can be minimized using number of network security tools and antivirus software, but all are not equally compatible for each type of attack hence the study is undertaken. This research paper highlights the performance of antivirus software using the number of parameters such as installation time, size, memory utilised, boot time, user interface launch time and full system scan time etc.

  9. Integrating patient satisfaction into performance measurement to meet improvement challenges.

    Science.gov (United States)

    Smith, J E; Fisher, D L; Endorf-Olson, J J

    2000-05-01

    A Value Compass has been proposed to guide health care data collection. The "compass corners" represent the four types of data needed to meet health care customer expectations: appropriate clinical outcomes, improved functional status, patient satisfaction, and appropriate costs. Collection of all four types of data is necessary to select processes in need of improvement, guide improvement teams, and monitor the success of improvement efforts. INTEGRATED DATA AT BRYANLGH: BryanLGH Medical Center in Lincoln, Nebraska, has adopted multiple performance measurement systems to collect clinical outcome, financial, and patient satisfaction data into integrated databases. Data integration allows quality professionals at BryanLGH to identify quality issues from multiple perspectives and track the interrelated effects of improvement efforts. A CASE EXAMPLE: Data from the fourth quarter of 1997 indicated the need to improve processes related to cesarean section (C-section) deliveries. An interdisciplinary team was formed, which focused on educating nurses, physicians, and the community about labor support measures. Physicians were given their own rates of C-section deliveries. The C-section rate decreased from 27% to 19%, but per-case cost increased. PickerPLUS+ results indicated that BryanLGH obstetric patients reported fewer problems with receiving information than the Picker norm, but they reported more problems with the involvement of family members and friends. The data collected so far have indicated a decrease in the C-section rate and a need to continue to work on cost and psychosocial issues. A complete analysis of results was facilitated by integrated performance management systems. Successes have been easily tracked over time, and the need for further work on related processes has been clearly identified.

  10. Methodologies for Measuring Judicial Performance: The Problem of Bias

    Directory of Open Access Journals (Sweden)

    Jennifer Elek

    2014-12-01

    Full Text Available Concerns about gender and racial bias in the survey-based evaluations of judicial performance common in the United States have persisted for decades. Consistent with a large body of basic research in the psychological sciences, recent studies confirm that the results from these JPE surveys are systematically biased against women and minority judges. In this paper, we explain the insidious manner in which performance evaluations may be biased, describe some techniques that may help to reduce expressions of bias in judicial performance evaluation surveys, and discuss the potential problem such biases may pose in other common methods of performance evaluation used in the United States and elsewhere. We conclude by highlighting the potential adverse consequences of judicial performance evaluation programs that rely on biased measurements. Durante décadas ha habido una preocupación por la discriminación por género y racial en las evaluaciones del rendimiento judicial basadas en encuestas, comunes en Estados Unidos. De acuerdo con un gran corpus de investigación básica en las ciencias psicológicas, estudios recientes confirman que los resultados de estas encuestas de evaluación del rendimiento judicial están sistemáticamente sesgados contra las mujeres y los jueces de minorías. En este artículo se explica la manera insidiosa en que las evaluaciones de rendimiento pueden estar sesgadas, se describen algunas técnicas que pueden ayudar a reducir las expresiones de sesgo en los estudios de evaluación del rendimiento judicial, y se debate el problema potencial que estos sesgos pueden plantear en otros métodos comunes de evaluación del rendimiento utilizados en Estados Unidos y otros países. Se concluye destacando las posibles consecuencias adversas de los programas de evaluación del rendimiento judicial que se basan en mediciones sesgadas. DOWNLOAD THIS PAPER FROM SSRN: http://ssrn.com/abstract=2533937

  11. Evaluation of emergency department performance - a systematic review on recommended performance and quality-in-care measures.

    Science.gov (United States)

    Sørup, Christian Michel; Jacobsen, Peter; Forberg, Jakob Lundager

    2013-08-09

    Evaluation of emergency department (ED) performance remains a difficult task due to the lack of consensus on performance measures that reflects high quality, efficiency, and sustainability. To describe, map, and critically evaluate which performance measures that the published literature regard as being most relevant in assessing overall ED performance. Following the PRISMA guidelines, a systematic literature review of review articles reporting accentuated ED performance measures was conducted in the databases of PubMed, Cochrane Library, and Web of Science. Study eligibility criteria includes: 1) the main purpose was to discuss, analyse, or promote performance measures best reflecting ED performance, 2) the article was a review article, and 3) the article reported macro-level performance measures, thus reflecting an overall departmental performance level. A number of articles addresses this study's objective (n = 14 of 46 unique hits). Time intervals and patient-related measures were dominant in the identified performance measures in review articles from US, UK, Sweden and Canada. Length of stay (LOS), time between patient arrival to initial clinical assessment, and time between patient arrivals to admission were highlighted by the majority of articles. Concurrently, "patients left without being seen" (LWBS), unplanned re-attendance within a maximum of 72 hours, mortality/morbidity, and number of unintended incidents were the most highlighted performance measures that related directly to the patient. Performance measures related to employees were only stated in two of the 14 included articles. A total of 55 ED performance measures were identified. ED time intervals were the most recommended performance measures followed by patient centeredness and safety performance measures. ED employee related performance measures were rarely mentioned in the investigated literature. The study's results allow for advancement towards improved performance measurement and

  12. Verifax: Biometric instruments measuring neuromuscular disorders/performance impairments

    Science.gov (United States)

    Morgenthaler, George W.; Shrairman, Ruth; Landau, Alexander

    1998-01-01

    VeriFax, founded in 1990 by Dr. Ruth Shrairman and Mr. Alex Landau, began operations with the aim of developing a biometric tool for the verification of signatures from a distance. In the course of developing this VeriFax Autograph technology, two other related applications for the technologies under development at VeriFax became apparent. The first application was in the use of biometric measurements as clinical monitoring tools for physicians investigating neuromuscular diseases (embodied in VeriFax's Neuroskill technology). The second application was to evaluate persons with critical skills (e.g., airline pilots, bus drivers) for physical and mental performance impairments caused by stress, physiological disorders, alcohol, drug abuse, etc. (represented by VeriFax's Impairoscope prototype instrument). This last application raised the possibility of using a space-qualified Impairoscope variant to evaluate astronaut performance with respect to the impacts of stress, fatigue, excessive workload, build-up of toxic chemicals within the space habitat, etc. The three applications of VeriFax's patented technology are accomplished by application-specific modifications of the customized VeriFax software. Strong commercial market potentials exist for all three VeriFax technology applications, and market progress will be presented in more detail below.

  13. Measuring the relative performance of stock market using TOPSIS

    Directory of Open Access Journals (Sweden)

    Abolfazl Danaei

    2013-01-01

    Full Text Available For many years, investors used some basic financial ratios to measure the relative performance of various active industries based on two-digit ISIC classification. However, direct implementation of basic financial figures may not be practical in today's business environment since investors face with different criteria. The proposed model of this paper uses Technique for Order Preference by Similarity to Ideal Solution (TOPSIS to compare 37 various industries based on different financial figures. We gather the necessary data over the period of 2009-2010 from Tehran Stock Exchange and investigate the data in two stages. In the first stage, we perform fundamental analysis to select the most appropriate firms and the in the second stage, we use TOPSIS to rank selected firms based on different criteria. The results of the study confirm that information and communication technology, which is one of the biggest firms in this exchange is considered as the best option (relative ranking 0.88 in two years followed by some Cement industry (with relative ranking of 0.26 in 2009 and 0.19 in 2010 and oil refinery units (with relative ranking of 0.23 in 2009 and 0.19 in 2010. The figure also shows that other firms maintain low ratios varied from 0.23 to 0.01. The lowest industry ranking belongs to marine industry.

  14. Cognitive Performance Measures in Bioelectromagnetic Research - Critical Evaluation and Recommendations

    Directory of Open Access Journals (Sweden)

    Achermann Peter

    2011-01-01

    Full Text Available Abstract Background The steady increase of mobile phone usage has led to a rising concern about possible adverse health effects of radio frequency electromagnetic field (RF EMF exposure at intensities even below the existing safety limits. Accumulating evidence suggests that pulse-modulated RF EMF may alter brain physiology. Yet, whereas effects on the human electroencephalogram in waking and sleep have repeatedly been shown in recent years, results on cognitive performance are inconsistent. Methods This review compares 41 provocation studies regarding the effects of RF EMF exposure similar to mobile telephones on cognitive performance measures in humans. The studies were identified via systematic searches of the databases Pub Med and ISI Web of Science and were published in peer-reviewed journals between 1998 and the end of 2009. Results Based on a critical discussion within the scope of methodological standards it is concluded that state-of-the-art-methods in bio-electromagnetic research on RF EMF effects and cognition have neither been specified nor fully implemented over the last 10-11 years. The lack of a validated tool, which reliably assesses changes in cognitive performance caused by RF EMF exposure, may contribute to the current inconsistencies in outcomes. The high variety of findings may also be due to methodological issues such as differences in sample size and the composition of study groups, experimental design, exposure setup as well as the exposure conditions, and emphasizes the need for a standardized protocol in bioelectromagnetic research. Conclusions At present, no underlying biological mechanism has been identified which mediates the effects on brain functioning as observed in electroencephalographic (EEG studies. A future aim must be to identify this mechanism as well as a reliable exposure protocol in order to gain more insights into possible behavioral and related health consequences of high-frequency EMF exposure.

  15. E-Area Performance Assessment Interim Measures Assessment FY2005

    Energy Technology Data Exchange (ETDEWEB)

    Stallings, M

    2006-01-31

    After major changes to the limits for various disposal units of the E-Area Low Level Waste Facility (ELLWF) last year, no major changes have been made during FY2005. A Special Analysis was completed which removes the air pathway {sup 14}C limit from the Intermediate Level Vault (ILV). This analysis will allow the disposal of reactor moderator deionizers which previously had no pathway to disposal. Several studies have also been completed providing groundwater transport input for future special analyses. During the past year, since Slit Trenches No.1 and No.2 were nearing volumetric capacity, they were operationally closed under a preliminary closure analysis. This analysis was performed using as-disposed conditions and data and showed that concrete rubble from the demolition of 232-F was acceptable for disposal in the STs even though the latest special analysis for the STs had reduced the tritium limits so that the inventory in the rubble exceeded limits. A number of special studies are planned during the next years; perhaps the largest of these will be revision of the Performance Assessment (PA) for the ELLWF. The revision will be accomplished by incorporating special analyses performed since the last PA revision as well as revising analyses to include new data. Projected impacts on disposal limits of more recent studies have been estimated. No interim measures will be applied during this year. However, it is being recommended that tritium disposals to the Components-in-Grout (CIG) Trenches be suspended until a limited Special Analysis (SA) currently in progress is completed. This SA will give recommendations for optimum placement of tritiated D-Area tower waste. Further recommendations for tritiated waste placement in the CIG Trenches will be given in the upcoming PA revision.

  16. Measurement of luminescence decays: High performance at low cost

    Science.gov (United States)

    Sulkes, Mark; Sulkes, Zoe

    2011-11-01

    The availability of inexpensive ultra bright LEDs spanning the visible and near-ultraviolet combined with the availability of inexpensive electronics equipment makes it possible to construct a high performance luminescence lifetime apparatus (˜5 ns instrumental response or better) at low cost. A central need for time domain measurement systems is the ability to obtain short (˜1 ns or less) excitation light pulses from the LEDs. It is possible to build the necessary LED driver using a simple avalanche transistor circuit. We describe first a circuit to test for small signal NPN transistors that can avalanche. We then describe a final optimized avalanche mode circuit that we developed on a prototyping board by measuring driven light pulse duration as a function of the circuit on the board and passive component values. We demonstrate that the combination of the LED pulser and a 1P28 photomultiplier tube used in decay waveform acquisition has a time response that allows for detection and lifetime determination of luminescence decays down to ˜5 ns. The time response and data quality afforded with the same components in time-correlated single photon counting are even better. For time-correlated single photon counting an even simpler NAND-gate based LED driver circuit is also applicable. We also demonstrate the possible utility of a simple frequency domain method for luminescence lifetime determinations.

  17. Measured Performance of a Low Temperature Air Source Heat Pump

    Energy Technology Data Exchange (ETDEWEB)

    Johnson, R. K. [Johnson Research LLC, Pueblo West, CO (United States)

    2013-09-01

    A 4-ton Low Temperature Heat Pump (LTHP) manufactured by Hallowell International was installed in a residence near New Haven, Connecticut and monitored over two winters of operation. After attending to some significant service issues, the heat pump operated as designed. This report should be considered a review of the dual compressor 'boosted heat pump' technology. The Low Temperature Heat Pumpsystem operates with four increasing levels of capacity (heat output) as the outdoor temperature drops. The system was shown to select capacity correctly, supplying the appropriate amount of heat to the house across the full range of outdoor temperatures. The system's Coefficient of Performance (Seasonal COP, or SCOP) over two entire winters was calculated, based on measured data, to be 3.29over the first winter and 2.68 over the second winter. A second seasonal efficiency calculation by a different method yielded a SCOP of 2.78 for the first winter and 2.83 for the second winter. This second seasonal efficiency calculation was determined by comparing measured heat pump energy use to the in situ energy use with resistance heat alone. This method is the ratio of the slopes of thedaily energy use load lines.

  18. Perform Thermodynamics Measurements on Fuel Cycle Case Study Systems

    Energy Technology Data Exchange (ETDEWEB)

    Martin, Leigh R. [Idaho National Lab. (INL), Idaho Falls, ID (United States)

    2014-09-01

    This document was prepared to meet FCR&D level 3 milestone M3FT-14IN0304022, “Perform Thermodynamics Measurements on Fuel Cycle Case Study Systems.” This work was carried out under the auspices of the Thermodynamics and Kinetics FCR&D work package. This document reports preliminary work in support of determining the thermodynamic parameters for the ALSEP process. The ALSEP process is a mixed extractant system comprised of a cation exchanger 2-ethylhexyl-phosphonic acid mono-2-ethylhexyl ester (HEH[EHP]) and a neutral solvating extractant N,N,N’,N’-tetraoctyldiglycolamide (TODGA). The extractant combination produces complex organic phase chemistry that is challenging for traditional measurement techniques. To neutralize the complexity, temperature dependent solvent extraction experiments were conducted with neat TODGA and scaled down concentrations of the ALSEP formulation to determine the enthalpies of extraction for the two conditions. A full set of thermodynamic data for Eu, Am, and Cm extraction by TODGA from 3.0 M HNO3 is reported. These data are compared to previous extraction results from a 1.0 M HNO3 aqueous medium, and a short discussion of the mixed HEH[EHP]/TODGA system results is offered.

  19. Value-Added and Other Methods for Measuring School Performance: An Analysis of Performance Measurement Strategies in Teacher Incentive Fund Proposals. Research Brief

    Science.gov (United States)

    National Center on Performance Incentives, 2008

    2008-01-01

    In "Value-Added and Other Methods for Measuring School Performance: An Analysis of Performance Measurement Strategies in Teacher Incentive Fund Proposals"--a paper presented at the February 2008 National Center on Performance Incentives research to policy conference--Robert Meyer and Michael Christian examine select performance-pay plans…

  20. Measurement of neutron spectra in the experimental reactor LR-0

    Energy Technology Data Exchange (ETDEWEB)

    Prenosil, Vaclav; Mravec, Filip; Veskrna, Martin [Faculty of Informatics, Masaryk University, Botanicka 68a, 612 00 Brno, (Czech Republic); Kostal, Michal [Research Centre Rez, Hlavni 130, 250 68 Husinec-Rez, (Czech Republic); Matej, Zdenek [VF, a.s., Svitavska 588, 679 21 Cerna Hora, (Czech Republic); Cvachovec, Frantisek [Faculty of Military Technology, University of Defense, Brno, (Czech Republic)

    2015-07-01

    The measurement of fast neutron fluxes is important in many areas of nuclear technology. It affects the stability of the reactor structural components, performance of fuel, and also the fuel manner. The experiments performed at the LR-0 reactor were in the past focused on the measurement of neutron field far from the core, in reactor pressure vessel simulator or in biological shielding simulator. In the present the measurement in closer regions to core became more important, especially measurements in structural components like reactor baffle. This importance increases with both reactor power increase and also long term operation. Other important task is an increasing need for the measurement close to the fuel. The spectra near the fuel are aimed due to the planned measurements with the FLIBE salt, in FHR / MSR research, where one of the task is the measurement of the neutron spectra in it. In both types of experiments there is strong demand for high working count rate. The high count rate is caused mainly by high gamma background and by high fluxes. The fluxes in core or in its vicinity are relatively high to ensure safe reactor operation. This request is met in the digital spectroscopic apparatus. All experiments were realized in the LR-0 reactor. It is an extremely flexible light water zero-power research reactor, operated by the Research Center Rez (Czech Republic). (authors)

  1. Diagnostic performance of MRI measurements to assess hindfoot malalignment. An assessment of four measurement techniques

    Energy Technology Data Exchange (ETDEWEB)

    Buck, Florian M.; Hoffmann, Adrienne; Mamisch-Saupe, Nadja; Hodler, Juerg [University Hospital Balgrist and University of Zurich, Radiology, Zuerich (Switzerland); Farshad, Mazda; Espinosa, Norman [University Hospital Balgrist and University of Zurich, Department of Orthopaedic Surgery, Zuerich (Switzerland); Resnick, Donald [University of California San Diego, Department of Radiology, San Diego, CA (United States)

    2013-09-15

    To investigate the ability of coronal non-weight-bearing MR images to discriminate between normal and abnormal hindfoot alignment. Three different measurement techniques (calcaneal axis, medial/lateral calcaneal contour) based on weight-bearing hindfoot alignment radiographs were applied in 49 patients (mean, 48 years; range 21-76 years). Three groups of subjects were enrolled: (1) normal hindfoot alignment (0 -10 valgus); (2) abnormal valgus (>10 ); (3) any degree of varus hindfoot alignment. Hindfoot alignment was then measured on coronal MR images using four different measurement techniques (calcaneal axis, medial/lateral calcaneal contour, sustentaculum tangent). ROC analysis was performed to find the MR measurement with the greatest sensitivity and specificity for discrimination between normal and abnormal hindfoot alignment. The most accurate measurement on MR images to detect abnormal hindfoot valgus was the one using the medial calcaneal contour, reaching a sensitivity/specificity of 86 %/75 % using a cutoff value of >11 valgus. The most accurate measurement on MR images to detect abnormal hindfoot varus was the sustentaculum tangent, reaching a sensitivity/specificity of 91 %/71 % using a cutoff value of <12 valgus. It is possible to suspect abnormal hindfoot alignment on coronal non-weight-bearing MR images. (orig.)

  2. Measuring steam generator performance using non-intrusive downcomer flow measurements

    Energy Technology Data Exchange (ETDEWEB)

    Taylor, C.E.; McGregor, J.E.; Kittmer, C.A. [Atomic Energy of Canada Limited, Chalk River, Ontario (Canada)

    1998-07-01

    Nuclear plant reliability depends directly on steam generator performance. Downcomer flow is a good monitor of steam generator performance. It provides information critical to the efficient and safe operation of steam generators as determined by the recirculation ratio and water inventory. In addition, reduced downcomer flow may indicate steam generator crudding or inadequate chemical cleaning. This paper describes recent advances in the application of ultrasonic technology to measure flow velocity in the downcomer annulus during operation. This technique is non-intrusive since the measurements are taken with ultrasonic transducers mounted on the outer shell of the steam generator. New transducers and improved installation techniques have resulted in increased transducer reliability. Through on-site testing, it was determined that some CANDU steam generators are experiencing carry-under (steam from the separators is carried into the downcomer). To measure the downcomer flow under these conditions, a different ultrasonic technique was required. A new technique became available in 1995 and was successfully adapted for high-temperature application. This transflection method was attached to a Bruce A steam generator in January of 1996. Whereas previous installations provided data for two to three months, this installation was still operating when the reactors were shut down in 1997. Options for movable measuring systems and simpler surface preparation have also been examined. This research has determined several obstacles and some possibilities for the use of magnets in temporarily holding the transducers at a given location. This would allow for measurements to be taken in a larger number of locations using the same flow measurement system. In addition, the need for minor welding on the surface of the steam generator shell would be eliminated. (author)

  3. Freight corridor performance measurement system: A framework for South Africa

    Directory of Open Access Journals (Sweden)

    Jan H. Havenga

    2016-01-01

    Full Text Available Background: On a national level, South Africa’s freight logistics industry is inefficient. The country ranks 36th out of 40 countries in terms of transport productivity (tonne kilometres as a ratio of gross domestic product, or GDP; the ratio of freight logistics costs to GDP measured 11.1% in 2013, compared to that of developed regions which measures in the order of 9%; and rail tonne-km market share on the two most dense long-distance corridors, namely, GautengDurban and Gauteng-Cape Town, is only 12.8% and 4.4%, respectively, whereas rail is globally acknowledged as a more efficient provider of long-distance freight solutions, given appropriate investments and service commitments.Objectives: A cornerstone of improved national freight logistics performance is the availability of reliable indicators to quantify the efficiency and capacity of the logistics network over the intermediate and long term, thereby enabling an evidence-based policy and investment environment. The objective of this article is to describe the foundation framework (i.e. phase 1 for South Africa’s freight corridor performance measurement system (CPMS. Once populated, the CPMS will be a key generator of indicators to facilitate the systemic management of corridors as a national production factor and thereby contributing to South Africa’s competitiveness.Method: The design of South Africa’s CPMS was informed by desktop research and refined through an extensive stakeholder consultation process. A distinction was made between South Africa’s dedicated bulk corridors and the multi-modal corridors.Results: Facilitating both stakeholder involvement and agreement on key indicators, as well as the eventual development of a system supporting the population, aggregation and dissemination of the CPMS are critical outcomes for the management of corridors as a national production factor. Three overarching corridor indicators were defined, relating to increased throughput, lower

  4. SRAG Measurements Performed During the Orion EFT-1 Mission

    Science.gov (United States)

    Gaza, Ramona

    2015-01-01

    The Exploration Flight Test 1 (EFT-1) was the first flight of the Orion Multi-Purpose Crew Vehicle (MPCV). The flight was launched on December 5, 2014, by a Delta IV Heavy rocket and lasted 4.5 hours. The EFT-1 trajectory involved one low altitude orbit and one high altitude orbit with an apogee of almost 6000 km. As a result of this particular flight profile, the Orion MPCV passed through intense regions of trapped protons and electron belts. In support of the radiation measurements aboard the EFT-1, the Space Radiation Analysis Group (SRAG) provided a Battery-operated Independent Radiation Detector (BIRD) based on Timepix radiation monitoring technology similar to that employed by the ISS Radiation Environmental Monitors (REM). In addition, SRAG provided a suite of optically and thermally stimulated luminescence detectors, with 2 Radiation Area Monitor (RAM) units collocated with the BIRD instrument for comparison purposes, and 6 RAM units distributed at different shielding configurations within the Orion MPCV. A summary of the EFT-1 Radiation Area Monitors (RAM) mission dose results obtained from measurements performed in the Space Radiation Dosimetry Laboratory at the NASA Johnson Space Center will be presented. Each RAM included LiF:Mg,Ti (TLD-100), (6)LiF:Mg,Ti (TLD-600), (7)LiF:Mg,Ti (TLD-700), Al2O3:C (Luxel trademark), and CaF2:Tm (TLD-300). The RAM mission dose values will be compared with the BIRD instrument total mission dose. In addition, a similar comparison will be shown for the ISS environment by comparing the ISS RAM data with data from the six Timepix-based REM units deployed on ISS as part of the NASA REM Technology Demonstration.

  5. Solubility measurement of trivalent lanthanide for performance assessment

    Energy Technology Data Exchange (ETDEWEB)

    Shibutani, Sanae [Power Reactor and Nuclear Fuel Development Corp., Tokai, Ibaraki (Japan). Tokai Works

    1996-03-01

    The solubility is estimated using thermodynamic data for performance assessment of the geological disposal system for high level radioactive waste. To calculate reliable solubility, the development of thermodynamic database is needed. We obtained the hydrolysis constants of Sm(OH){sub 3}(cr), SmOHCO{sub 3}(cr) and NdOHCO{sub 3}(cr) by solubility measurements. The solubility measurements of Sm(OH){sub 3}(cr) were conducted under low CO{sub 2} concentration system(Ar>99.999%), 24-27degC, ionic strength I=0.1, pH7-12.1. For hydroxo-carbonates were conducted in air, 25 {+-} 0.5degC, ionic strength I=0.1, pH5.7-9.7. The solubilities were similar to those of americium. The results were Sm(OH){sub 3}(cr) {r_reversible} Sm{sup 3+} + 3H{sub 2}O - 3H{sup +}; logK = 66.4, SmOHCO{sub 3}(cr) {r_reversible} Sm{sup 3+} + H{sub 2}O - H{sup +} + CO{sub 3}{sup 2-}; logK = -8.69, NdOHCO{sub 3}(cr) {r_reversible} Nd{sup 3+} + H{sub 2}O - H{sup +} + CO{sub 3}{sup 2-}; logK = -7.89. The solubilities of samarium and neodymium under the geological disposal condition were estimated at 10{sup -6}-10{sup -8} mol/l. (author).

  6. A National Initiative to Advance School Mental Health Performance Measurement in the US

    Science.gov (United States)

    Connors, Elizabeth Halsted; Stephan, Sharon Hoover; Lever, Nancy; Ereshefsky, Sabrina; Mosby, Amanda; Bohnenkamp, Jill

    2016-01-01

    Standardized health performance measurement has increasingly become an imperative for assuring quality standards in national health care systems. As compared to somatic health performance measures, behavioral health performance measures are less developed. There currently is no national standardized performance measurement system for monitoring…

  7. Upper Bounds on Performance Measures of Heterogeneous // Queues

    Directory of Open Access Journals (Sweden)

    F. S. Q. Alves

    2011-01-01

    Full Text Available In many real-life queueing systems, the servers are often heterogeneous, namely they work at different rates. This paper provides a simple method to compute tight upper bounds on two important performance measures of single-class heterogeneous multi-server Markovian queueing systems, namely the average number in queue and the average waiting time in queue. This method is based on an expansion of the state space that is followed by an approximate reduction of the state space, only considering the most probable states. In most cases tested, we were able to approximate the actual behavior of the system with smaller errors than those obtained from traditional homogeneous multiserver Markovian queues, as shown by GPSS simulations. In addition, we have correlated the quality of the approximation with the degree of heterogeneity of the system, which was evaluated using its Gini index. Finally, we have shown that the bounds are robust and still useful, even considering quite different allocation strategies. A large number of simulation results show the accuracy of the proposed method that is better than that of classical homogeneous multiserver Markovian formulae in many situations.

  8. Measuring teamwork performance: Validity testing of the Team Emergency Assessment Measure (TEAM) with clinical resuscitation teams.

    Science.gov (United States)

    Cooper, Simon; Cant, Robyn; Connell, Cliff; Sims, Lyndall; Porter, Joanne E; Symmons, Mark; Nestel, Debra; Liaw, Sok Ying

    2016-04-01

    To test the resuscitation non-technical Team Emergency Assessment Measure (TEAM) for feasibility, validity and reliability, in two Australian Emergency Departments (ED). Non-technical (teamwork) skills have been identified as inadequate and as such have a significant impact on patient safety. Valid and reliable teamwork assessment tools are an important element of performance assessment and debriefing processes. A quasi experimental design based on observational ratings of resuscitation non-technical skills in two metropolitan ED. Senior nursing staff rated 106 adult resuscitation team events over a ten month period where three or more resuscitation team members attended. Resuscitation events, team performance and validity and reliability data was collected for the TEAM. Most rated events were for full cardiac resuscitation (43%) with 3-15 team members present for an average of 45 min. The TEAM was found to be feasible and quickly completed with minimal or no training. Discriminant validity was good as was internal consistency with a Cronbach alpha of 0.94. Uni-dimensional and concurrent validity also reached acceptable standards, 0.94 and >0.63 (p=performance indicating a need for leadership training. The TEAM is a feasible, valid and reliable non-technical assessment measure in simulated and real clinical settings. Emergency teams need to develop leadership skills through training and reflective debriefing. Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.

  9. Influence of Spherical Radiation Pattern Measurement Uncertainty on Handset Performance Measures

    DEFF Research Database (Denmark)

    Nielsen, Jesper Ødum; Pedersen, Gert Frølund

    2005-01-01

    and the same mounting of the handset on the phantom. In this work the influence of mounting errors on the TRP, TIS, and MEG is investigated. Knowledge about the error due to incorrect mounting is necessary in determining requirements for both the mounting accuracy as well as for other parts of the measurement...... in the performance measures are investigated for both the GSM-900 and the GSM-1800 band. Despite the deliberately large deviations from the reference position, the changes in TRP and TIS are generally within ±0.5 dB with a maximum of about 1.4 dB. For the MEG values the results depend on the orientation...

  10. Perturbing engine performance measurements to determine optimal engine control settings

    Science.gov (United States)

    Jiang, Li; Lee, Donghoon; Yilmaz, Hakan; Stefanopoulou, Anna

    2014-12-30

    Methods and systems for optimizing a performance of a vehicle engine are provided. The method includes determining an initial value for a first engine control parameter based on one or more detected operating conditions of the vehicle engine, determining a value of an engine performance variable, and artificially perturbing the determined value of the engine performance variable. The initial value for the first engine control parameter is then adjusted based on the perturbed engine performance variable causing the engine performance variable to approach a target engine performance variable. Operation of the vehicle engine is controlled based on the adjusted initial value for the first engine control parameter. These acts are repeated until the engine performance variable approaches the target engine performance variable.

  11. Effect of milking frequency on DHI performance measures.

    Science.gov (United States)

    Smith, J W; Ely, L O; Graves, W M; Gilson, W D

    2002-12-01

    Increasing production by increasing milking frequency (MF) is a management option available to dairy producers. This study examined effects of MF and interactions with region and herd size on measures of herd performance. Dairy Herd Improvement (DHI) Holstein herd summary records (n = 10,754, 10,550, and 10,438) for the years 1998, 1999, and 2000 were classified by MF: two times a day (2X) milking vs three times a day (3X); herd size: small ( or = 250 cows); and region: North and South. Percentage of herds milking 3X by year were 7.0, 6.7, and 7.1. Rolling herd average milk production was 16, 16, and 15% higher for herds milking 3X than herds milking 2X for the respective years. Herds milking 3X in the North region outproduced herds milking 3X in the South region. Milk fat and protein percentages were lower for herds milking 3X during all 3 yr. Differences in energy-corrected milk production between herds milking 3X and herds milking 2X were 14.5, 13.4, and 13.4% during the respective 3 yr as a result of lower component percentages for herds milking 3X. Herds milking 3X had more days open and higher actual calving intervals than herds milking 2X. Services per pregnancy for herds breeding primarily by artificial insemination were higher for herds milking 3X than for herds milking 2X. Somatic cell scores and weighted somatic cell counts were lower for herds milking 3X than herds milking 2X. Herds milking 3X had a higher percentage of somatic cell scores in the low range (0 to 3) and a lower percentage in the high range (7 to 9). Mean percentages of cows entering and leaving the herd were higher for herds milking 3X during all 3 yr.

  12. Performance Evaluation of Proportional Fair Scheduling Algorithm with Measured Channels

    DEFF Research Database (Denmark)

    Sørensen, Troels Bundgaard; Pons, Manuel Rubio

    2005-01-01

    subjected to measured channel traces. Specifically, we applied measured signal fading recorded from GSM cell phone users making calls on an indoor wireless office system. Different from reference channel models, these measured channels have much more irregular fading between users, which as we show...

  13. 20 CFR 641.700 - What performance measures/indicators apply to SCSEP grantees?

    Science.gov (United States)

    2010-04-01

    ... 20 Employees' Benefits 3 2010-04-01 2010-04-01 false What performance measures/indicators apply to... Accountability § 641.700 What performance measures/indicators apply to SCSEP grantees? (a) Indicators of performance. There are currently eight performance measures, of which six are core indicators and two...

  14. Measuring marketing performance: a review and a framework

    OpenAIRE

    Gao, Yuhui

    2010-01-01

    Critics of marketing commonly allude to problems with its accountability and credibility. In order to address these issues, marketing professionals have been called on to demonstrate the contribution of marketing to firm performance. A better understanding of current research in marketing performance can better enable marketing managers to justify its expense. Given the foregoing, it was determined to (1) review the current status of marketing performance studies, and (2) develop a comprehens...

  15. Procedures and results of the measurements on large area photomultipliers for the NEMO project

    Science.gov (United States)

    Aiello, S.; Leonora, E.; Aloisio, A.; Ameli, F.; Amore, I.; Anghinolfi, M.; Anzalone, A.; Barbarino, G.; Barbarito, E.; Battaglieri, M.; Bazzotti, M.; Bellotti, R.; Bersani, A.; Beverini, N.; Biagi, S.; Bonori, M.; Bouhdaef, B.; Cacopardo, G.; Calı, C.; Capone, A.; Caponetto, L.; Carminati, G.; Cassano, B.; Ceres, A.; Chiarusi, T.; Circella, M.; Cocimano, R.; Coniglione, R.; Cordelli, M.; Costa, M.; D'Amico, A.; DeBonis, G.; DeRosa, G.; DeRuvo, G.; DeVita, R.; Distefano, C.; Flaminio, V.; Fratini, K.; Gabrielli, A.; Galeotti, S.; Gandolfi, E.; Giacomelli, G.; Giorgi, F.; Giovanetti, G.; Grimaldi, A.; Grmek, A.; Habel, R.; Imbesi, M.; Lonardo, A.; LoPresti, D.; Lucarelli, F.; Margiotta, A.; Marinelli, A.; Martini, A.; Masullo, R.; Maugeri, F.; Migneco, E.; Minutoli, S.; Mongelli, M.; Morganti, M.; Musico, P.; Musumeci, M.; Orlando, A.; Osipenko, M.; Papaleo, R.; Pappalardo, V.; Piattelli, P.; Piombo, D.; Raffaelli, F.; Raia, G.; Randazzo, N.; Reito, S.; Ricco, G.; Riccobene, G.; Ripani, M.; Rovelli, A.; Ruppi, M.; Russo, G. V.; Russo, S.; Sapienza, P.; Sedita, M.; Shirokov, E.; Simeone, F.; Sciliberto, D.; Sipala, V.; Sollima, C.; Spurio, M.; Stefani, F.; Taiuti, M.; Terreni, G.; Trasatti, L.; Urso, S.; Vecchi, M.; Vicini, P.; Wischnewski, R.

    2010-03-01

    The selection of the photomultiplier plays a crucial role in the R&D activity related to a large-scale underwater neutrino telescope. This paper illustrates the main procedures and facilities used to characterize the performances of 72 large area photomultipliers, Hamamatsu model R7081 sel. The voltage to achieve a gain of 5×10 7, dark count rate and single photoelectron time and charge properties of the overall response were measured with a properly attenuated 410 nm pulsed laser. A dedicated study of the spurious pulses was also performed. The results prove that the photomultipliers comply with the general requirements imposed by the project.

  16. Aerodynamic Performance and Turbulence Measurements in a Turbine Vane Cascade

    Science.gov (United States)

    Boyle, Robert J.; Lucci, Barbara L.; Senyitko, Richard G.

    2002-01-01

    Turbine vane aerodynamics were measured in a three vane linear cascade. Surface pressures and blade row losses were obtained over a range of Reynolds and Mach number for three levels of turbulence. Comparisons are made with predictions using a quasi-3D Navier-Stokes analysis. Turbulence intensity measurement were made upstream and downstream of the vane. The purpose of the downstream measurements was to determine how the turbulence was affected by the strong contraction through 75 deg turning.

  17. Measures of Strategic Alliance Performance, Classified and Assessed

    DEFF Research Database (Denmark)

    Christoffersen, Jeppe; Plenborg, Thomas; Robson, Matthew J.

    2014-01-01

    Over the last three decades, strategic alliance performance has been an important research topic within the international business and management fields. Researchers have investigated a number of factors explaining performance but often find diverging results. Scholars have suggested that one rea...

  18. Measuring the marketing performances of state forest enterprises in ...

    African Journals Online (AJOL)

    USER

    2010-06-14

    Jun 14, 2010 ... Because marketing is a social science and, therefore, determining the marketing performance system concretely ... necessity. It is misleading to evaluate an enterprise's performance ... managers and analysts for decision making and would ...... Framewor, Media: Institute for the Study of Business Markets,.

  19. The Forecast Performance of Competing Implied Volatility Measures

    DEFF Research Database (Denmark)

    Tsiaras, Leonidas

    volatility (CIV) measures are explored. For all pair-wise comparisons, it is found that a CIV measure that is closely related to the model-free implied volatility, nearly always delivers the most accurate forecasts for the majority of the firms. This finding remains consistent for different forecast horizons...

  20. From Performance Measurement to Strategic Management Model: Balanced Scorecard

    OpenAIRE

    Cihat Savsar

    2015-01-01

    Abstract: In Today’s competitive markets, one of the main conditions of the surviving of enterprises is the necessity to have effective performance management systems. Decisions must be taken by the management according to the performance of assets. In the transition from industrial society to information society, the presence of business structures have changed and the values of non-financial assets have increased in this period. So some systems have emerged based on intangible assets and to...

  1. A physician's due: measuring physician billing performance, benchmarking results.

    Science.gov (United States)

    Woodcock, Elizabeth W; Browne, Robert C; Jenkins, Jennifer L

    2008-07-01

    A 2008 study focused on four key performance indicators (KPIs) and staffing levels to benchmark the FYO7 performance of physician group billing operations. A comparison of the change in the KPIs from FYO3 to FYO7 for a number of these billing operations disclosed across-the-board improvements. Billing operations did not show significant changes in staffing levels during this time, pointing to the existence of obstacles that prevent staff reductions in this area.

  2. Development of the Computerized Model of Performance-Based Measurement System to Measure Nurses' Clinical Competence.

    Science.gov (United States)

    Liou, Shwu-Ru; Liu, Hsiu-Chen; Tsai, Shu-Ling; Cheng, Ching-Yu; Yu, Wei-Chieh; Chu, Tsui-Ping

    2016-04-01

    Critical thinking skills and clinical competence are for providing quality patient care. The purpose of this study is to develop the Computerized Model of Performance-Based Measurement system based on the Clinical Reasoning Model. The system can evaluate and identify learning needs for clinical competency and be used as a learning tool to increase clinical competency by using computers. The system includes 10 high-risk, high-volume clinical case scenarios coupled with questions testing clinical reasoning, interpersonal, and technical skills. Questions were sequenced to reflect patients' changing condition and arranged by following the process of collecting and managing information, diagnosing and differentiating urgency of problems, and solving problems. The content validity and known-groups validity was established. The Kuder-Richardson Formula 20 was 0.90 and test-retest reliability was supported (r = 0.78). Nursing educators can use the system to understand students' needs for achieving clinical competence, and therefore, educational plans can be made to better prepare students and facilitate their smooth transition to a future clinical environment. Clinical nurses can use the system to evaluate their performance-based abilities and weakness in clinical reasoning. Appropriate training programs can be designed and implemented to practically promote nurses' clinical competence and quality of patient care.

  3. An international scorecard for measuring bank performance: The case of Dutch banks

    OpenAIRE

    Bos, J.W.B.; J.A.J. Draulans; D. van den Kommer; B.A. Verhoef

    2006-01-01

    Measuring bank performance solely on the basis of profitability conveys significant information about past performance, but may provide little information about expectations for future performance. Therefore, this paper relies on a much broader definition of performance and introduces a scorecard where performance is measured on the basis of four performance criteria: (i) profitability; (ii) risk; (iii) market power, and (iv) efficiency. We use this scorecard to compare the performance of maj...

  4. ‘Profit, performance, perception’: a research into the use of alternative performance measures in the European Union

    NARCIS (Netherlands)

    Brouwer, A.J.

    2013-01-01

    This thesis concludes that the reporting of alternative performance measures enriches the financial information and that concerns in relation to strategic reporting behavior do not justify imposing restrictions on the use of alternative performance measures. Prescribing the reporting of both a norma

  5. Performance of the APS optical slope measuring system

    Energy Technology Data Exchange (ETDEWEB)

    Qian, Jun, E-mail: jqian@aps.anl.gov [Advanced Photon Source, Argonne National Laboratory, 9700S. Cass Avenue, Argonne, 60439 (United States); Sullivan, Joe; Erdmann, Mark; Khounsary, Ali; Assoufid, Lahsen [Advanced Photon Source, Argonne National Laboratory, 9700S. Cass Avenue, Argonne, 60439 (United States)

    2013-05-11

    An optical slope measuring system (OSMS) was recently brought into operation at the Advanced Photon Source of the Argonne National Laboratory. This system is equipped with a precision autocollimator and a very accurate mirror-based pentaprism on a scanning stage and kept in an environment-controlled enclosure. This system has the capability to measure precision optics with sub-microradian rms slope errors as documented with a series of tests demonstrating accuracy, stability, reliability and repeatability. Measurements of a flat mirror with 0.2 μrad rms slope error are presented which show that the variation of the slope profile measurements with the mirror setting at different locations along the scanning direction is only 60 nrad and the corresponding height error profile has 2 nm rms. -- Highlights: ► This is the first time to present the APS OSMS in publication. ► The APS OSMS is capable to measure flat and near flat mirrors with slope error <100 nrad rms. ► The accuracy of the slope error measurements of a 350 mm long mirror is less than 60 nrad rms.

  6. 76 FR 18615 - 30-Day Notice of Proposed Information Collection: Performance Measurement, Evaluation and Public...

    Science.gov (United States)

    2011-04-04

    ... Notice of Proposed Information Collection: Performance Measurement, Evaluation and Public Diplomacy... Reduction Act of 1995. Title of Information Collection: Performance Measurement, Evaluation and Public... of information. SUMMARY: The Department of State has submitted the following information...

  7. Measured Zero Net Energy Performance: Results, Lessons, and Surprises

    Energy Technology Data Exchange (ETDEWEB)

    Brown, Carrie; LaRue, Anna; Pigman, Margaret; Roberts, Jon; Kaneda, David; Connelly, Dylan; Elliott, John; Pless, Shanti; Pande, Abhijeet; Dean, Edward; Anbarlilar, Can

    2016-08-26

    As more and more zero net energy (ZNE) buildings are built and monitored, we can learn from both careful case studies of individual projects as well as a broader perspective of trends over time. In a forum sponsored by Pacific Gas and Electric Company (PG&E), eight expert speakers discussed: results and lessons from monitoring occupied ZNE buildings; best practices for setting performance targets and getting actionable performance information, and; things that have surprised them about monitored ZNE buildings. This paper distills the content of the forum by laying out the most common hurdles that are encountered in setting up monitoring projects, frequent performance issues that the monitoring uncovers, and lessons learned that can be applied to future projects.

  8. A Constructive Conceptual Approach to Strategic Performance Measurement

    DEFF Research Database (Denmark)

    Mitchell, Falconer; Nielsen, Lars Bråd; Nørreklit, Hanne

    This paper focuses on identifying the key characteristics of a good strategic performance. It does this from a conceptual base founded in the paradigm of pragmatic constructivism. This involves analysing real world activities such as strategy setting and implementation in terms of the facts...... on which they are based, the values applied by those responsible, the logic applied to possibilities confronting them and the communication amongst them. From this analysis several key concepts underlying sound strategic performance are discovered. These are the internal and external coherence...

  9. Ranking Performance Measures in Multi-Task Agencies

    DEFF Research Database (Denmark)

    Christensen, Peter Ove; Sabac, Florin; Tian, Joyce

    2010-01-01

    We derive sufficient conditions for ranking performance evaluation systems in multi-task agency models (using both optimal and linear contracts) in terms of a second-order stochastic dominance (SSD) condition on the likelihood ratios. The SSD condition can be replaced by a variance-covariance mat......We derive sufficient conditions for ranking performance evaluation systems in multi-task agency models (using both optimal and linear contracts) in terms of a second-order stochastic dominance (SSD) condition on the likelihood ratios. The SSD condition can be replaced by a variance...

  10. High-Performance data flows using analytical models and measurements

    Energy Technology Data Exchange (ETDEWEB)

    Rao, Nageswara S [ORNL; Towlsey, D. [University of Massachusetts; Vardoyan, G. [University of Massachusetts; Kettimuthu, R. [Argonne National Laboratory (ANL); Foster, I. [Argonne National Laboratory (ANL); Settlemyer, Bradley [Los Alamos National Laboratory (LANL)

    2016-01-01

    The combination of analytical models and measurements provide practical configurations and parameters to achieve high data transport rates: (a) buffer sizes and number of parallel streams for improved memory and file transfer rates, (b) Hamilton and Scalable TCP congestion control modules for memory transfers in place of default CUBIC, and (c) direct IO mode for Lustre file systems for wide-area transfers. Conventional parameter selection using full sweeps is impractical in many cases since it takes months. By exploiting the unimodality of throughput profiles, we developed the d-w method that significantly reduces the number of measurements needed for parameter identification. This heuristic method was effective in practice in reducing the measurements by about 90% for Lustre and XFS file transfers.

  11. Radiocarbon measurements at LAC-UFF: Recent performance

    Energy Technology Data Exchange (ETDEWEB)

    Linares, Roberto, E-mail: rlinares@if.uff.br [Laboratório de Radiocarbono, Universidade Federal Fluminense, Av. Gal. Milton Tavares de Souza, s/n, Niterói 24230-346 (Brazil); Macario, Kita D. [Laboratório de Radiocarbono, Universidade Federal Fluminense, Av. Gal. Milton Tavares de Souza, s/n, Niterói 24230-346 (Brazil); Santos, Guaciara M. [Earth System Science, University of California, Irvine, B321 Croul Hall, Irvine, CA 92697-3100 (United States); Carvalho, Carla [Laboratório de Radiocarbono, Universidade Federal Fluminense, Av. Gal. Milton Tavares de Souza, s/n, Niterói 24230-346 (Brazil); Departamento de Geoquímica, Universidade Federal Fluminense, Outeiro São João Batista, s/n, Niterói 24020-141 (Brazil); Santos, Hellen C. dos; Gomes, Paulo R.S.; Castro, Maikel D.; Oliveira, Fabiana M.; Alves, Eduardo Q. [Laboratório de Radiocarbono, Universidade Federal Fluminense, Av. Gal. Milton Tavares de Souza, s/n, Niterói 24230-346 (Brazil)

    2015-10-15

    In 2012 a single stage accelerator mass spectrometer from NEC was installed at the Radiocarbon Laboratory of Universidade Federal Fluminense (LAC-UFF), Niterói, Brazil. Here, we present a status report of our facility. We discuss some modifications applied to our combustion protocol in an attempt to reduce our procedural blank, mostly to processed organic samples. Measurements of reference materials indicate low precision and accuracy that are partially related to beam optics through the acceleration tube. We observed that once the beam current intensity increases the measured {sup 13}C{sup +}/{sup 12}C{sup +} becomes erratic. Therefore, in order to maintain the AMS-δ{sup 13}C values within reasonable values, so that fractionation corrections using the spectrometer {sup 13}C{sup +}/{sup 12}C{sup +} values does not affect the final {sup 14}C results, we are forced to limit the {sup 12}C{sup −} beam intensity to ⩽30 μA. This requirement was confirmed during our accuracy tests, when measuring selected annual tree-rings wood samples from a Parana pine (Araucaria angustifolia) between 1927 and 1997 previously measured at the Keck Carbon Cycle AMS Facility (KCCAMS), at the University of California, Irvine (UCI). At the LAC-UFF tree-ring wood samples were processed and measured in 4 different batches during a period of about 5 months. The {sup 14}C results were later compared to the high-precision data obtained at KCCAMS/UCI and reached a good agreement. Recently a problem associated with graphitization yield were finally identified and new measurements with secondary standards are promising.

  12. Energy-efficient high performance computing measurement and tuning

    CERN Document Server

    III, James H Laros; Kelly, Sue

    2012-01-01

    In this work, the unique power measurement capabilities of the Cray XT architecture were exploited to gain an understanding of power and energy use, and the effects of tuning both CPU and network bandwidth. Modifications were made to deterministically halt cores when idle. Additionally, capabilities were added to alter operating P-state. At the application level, an understanding of the power requirements of a range of important DOE/NNSA production scientific computing applications running at large scale is gained by simultaneously collecting current and voltage measurements on the hosting nod

  13. Job Performance Measurement Classification Scheme for Validation Research in the Military.

    Science.gov (United States)

    1986-02-01

    the information and procedures used with this approach. In order to develop a measurement methodology for job performance , a classification scheme of... job performance measurement quality was needed (a) to summarize and organize research progress in terms of previous empirical work and (b) to identify...literature review and specific directions for future job performance measurement research.

  14. 45 CFR 2522.570 - What information on performance measures must my grant application include?

    Science.gov (United States)

    2010-10-01

    ... 45 Public Welfare 4 2010-10-01 2010-10-01 false What information on performance measures must my... APPLICANTS Evaluation Requirements Performance Measures: Requirements and Procedures § 2522.570 What information on performance measures must my grant application include? You must submit all of the following...

  15. Modeling performance measurement applications and implementation issues in DEA

    CERN Document Server

    Cook, Wade D

    2005-01-01

    Addresses advanced/new DEA methodology and techniques that are developed for modeling unique and new performance evaluation issuesPesents new DEA methodology and techniques via discussions on how to solve managerial problemsProvides an easy-to-use DEA software - DEAFrontier (www.deafrontier.com) which is an excellent tool for both DEA researchers and practitioners.

  16. Measuring the Impact of Rater Negotiation in Writing Performance Assessment

    Science.gov (United States)

    Trace, Jonathan; Janssen, Gerriet; Meier, Valerie

    2017-01-01

    Previous research in second language writing has shown that when scoring performance assessments even trained raters can exhibit significant differences in severity. When raters disagree, using discussion to try to reach a consensus is one popular form of score resolution, particularly in contexts with limited resources, as it does not require…

  17. Soil Electromagnetic Properties and Metal Detector Performance: Theory and Measurement

    Science.gov (United States)

    2008-11-17

    detection. Despite ongoing evolution and refinement of metal detector technology, however, the practical performance of both continuous wave (FDEM) and...noise ratio and increase the false-detection rate. At certain locations, the soil effect is so severe as to render a given metal detector practically inoperable.

  18. Analysis of Performance Measures in the Banking System

    Directory of Open Access Journals (Sweden)

    Angelica STRATULAT

    2013-08-01

    Full Text Available The complex and delicate character of the problem of banking performance, in the context of harsh competition and the emergence of multiple risks, impose on the banks the permanent evaluation of the behavior and the analysis of internal activity. In the context of the fast changes that take place in national economies lately, starting points towards a new banking order must be based on new models of banking management. The macroeconomic risk factors may have a significant impact on the performance of a banking institution, with direct implications on the quality of the credit portfolio, on profitability and its fructification and, finally, on the entire banking system. The evaluation of a bank’s profitability is done with the aid of the banking performance indicators, which reflect a multitude of aspects regarding the degree of profit realization, managerial and operational efficiency. The most important objective that banks which want to assume the responsibility of running a successful practice will be the identification of market needs and the choosing of a strategic position in this market, in the context of banking performance and minimal risk.

  19. How one should perform sensory measurements of perceived air quality

    DEFF Research Database (Denmark)

    Wargocki, Pawel; Knudsen, Henrik N; Krzyzanowska, Justyna

    2010-01-01

    materials were chosen for the study, including carpet, linoleum, PVC, ceiling and two different paints. The assessments were performed in the small-scale in 20 glass chambers called CLIMPAQs. Each CLIMPAQ was loaded with single material. Each material was examined at three different area specific...

  20. Measuring hospital performance in multiinstitutional organizations using financial ratios.

    Science.gov (United States)

    Coyne, J S

    1985-01-01

    The growth in the number of hospitals participating in MIOs is a critical force in the health services industry. Financial ratios serve as a tool to analyze the performance of these MIOs. Ratios can provide signals of financial stress or strength, which is essential to survival in a price-competitive environment.

  1. Ranking Performance Measures in Multi-Task Agencies

    DEFF Research Database (Denmark)

    Christensen, Peter Ove; Sabac, Florin; Tian, Joyce

    We derive sufficient conditions for ranking performance evaluation systems in multi-task agency models using both optimal and linear contracts in terms of a second-order stochastic dominance (SSD) condition on the likelihood ratios. The SSD condition can be replaced by a variance-covariance matrix...

  2. Ranking Performance Measures in Multi-Task Agencies

    DEFF Research Database (Denmark)

    Christensen, Peter Ove; Sabac, Florin; Tian, Joyce

    We derive sufficient conditions for ranking performance evaluation systems in multi-task agency models using both optimal and linear contracts in terms of a second-order stochastic dominance (SSD) condition on the likelihood ratios. The SSD condition can be replaced by a variance-covariance matrix...

  3. Measurement of PVFS2 performance on InfiniBand

    Energy Technology Data Exchange (ETDEWEB)

    Nagaraj, Sudhindra Prasad Tirupati [Iowa State Univ., Ames, IA (United States)

    2009-01-01

    InfiniBand is becoming increasingly popular as a fast interconnect technology between servers and storage. It has far better price/performance ratio compared to both Gigabit Ethernet and 10 Gigabit Ethernet, and hence is being increasingly used for highperformance computing applications. PVFS2, the second generation Parallel Virtual File System (PVFS), is a distributed file system for parallel data access that is being increasingly used in clustered applications. As previous studies have shown, in general, PVFS2 over InfiniBand offers enhanced I/O rates compared to PVFS2 over TCP and Gigabit Ethernet. Apart from the hardware technology, the application programming interface into the file system also makes a difference. To get better parallel performance, the choice of a file system interface is important. Our study is to benchmark and compare the performance of PVFS2 running over InfiniBand using different file system interfaces. IOR is a popular I/O benchmarking tool that supports the POSIX and MPI I/O file system interfaces. In addition to testing these already supported interfaces, we have written a PVFS2 module extension for IOR to support native PVFS2 interfaces into the PVFS2 file system. As we shall see in this study, using native PVFS2 interface offers significant performance benefit compared to other file system interfaces on the PVFS2 file system. Our benchmarking effort also involves studying the effect of a multi-client environment on the I/O performance of different file system interfaces. Based on the benchmarking results we obtain, we determine the most efficient application programming interface for parallel I/O on PVFS2 in a typical multi-client parallel application scenario.

  4. Proficiency testing for sensory profile panels : measuring panel performance

    NARCIS (Netherlands)

    Mcewan, J.A.; Hunter, E.A.; Gemert, L.J. van; Lea, P.

    2002-01-01

    Proficiency testing in sensory analysis is an important step towards demonstrating that results from one sensory panel are consistent with the results of other sensory panels. The uniqueness of sensory analysis poses some specific problems for measuring the proficiency of the human instrument (panel

  5. Measuring Information Technology Performance: Operational Efficiency and Operational Effectiveness

    Science.gov (United States)

    Moore, Annette G.

    2012-01-01

    This dissertation provides a practical approach for measuring operational efficiency and operational effectiveness for IT organizations introducing the ITIL process framework. The intent of the study was to assist Chief Information Officers (CIOs) in explaining the impact of introducing the Information Technology Infrastructure Library (ITIL)…

  6. Building Fluent Performance: Measuring Response Rate and Multiplying Response Opportunities

    Science.gov (United States)

    Binder, Carl

    2010-01-01

    Precision teaching emerged from O.R. Lindsley's pristine application of Skinner's natural science of behavior, with a focus on response rate measurement and free operant procedures. When applied with human learners in instructional settings, these first principles led to a series of developments framed in this paper as four kinds of ceilings that…

  7. Measuring Information Technology Performance: Operational Efficiency and Operational Effectiveness

    Science.gov (United States)

    Moore, Annette G.

    2012-01-01

    This dissertation provides a practical approach for measuring operational efficiency and operational effectiveness for IT organizations introducing the ITIL process framework. The intent of the study was to assist Chief Information Officers (CIOs) in explaining the impact of introducing the Information Technology Infrastructure Library (ITIL)…

  8. A comparison of performance measures for online algorithms

    DEFF Research Database (Denmark)

    Boyar, Joan; Irani, Sandy; Larsen, Kim Skak

    2009-01-01

    This paper provides a systematic study of several recently suggested measures for online algorithms in the context of a specific problem, namely, the two server problem on three colinear points. Even though the problem is simple, it encapsulates a core challenge in online algorithms which is to b...

  9. Measuring Distance Learning Performance with Data Envelopment Analysis

    Science.gov (United States)

    Xiaoming, Yang; Shieh, Chich-Jen; Wu, Wu-Chung

    2014-01-01

    In the modern society with changeable information technology learning and applications, students could acquire information application knowledge, which is not worse than those taught by teachers in classrooms, through the Internet, distance conference, and e-learning. Traditional instruction therefore is facing great challenges. When measuring the…

  10. Measuring Distance Learning Performance with Data Envelopment Analysis

    Science.gov (United States)

    Xiaoming, Yang; Shieh, Chich-Jen; Wu, Wu-Chung

    2014-01-01

    In the modern society with changeable information technology learning and applications, students could acquire information application knowledge, which is not worse than those taught by teachers in classrooms, through the Internet, distance conference, and e-learning. Traditional instruction therefore is facing great challenges. When measuring the…

  11. 34 CFR 379.52 - How is grantee performance measured using the compliance indicators?

    Science.gov (United States)

    2010-07-01

    ... Funding? § 379.52 How is grantee performance measured using the compliance indicators? (a) Each compliance indicator establishes a minimum performance level. (b) If a grantee does not achieve the minimum performance... 34 Education 2 2010-07-01 2010-07-01 false How is grantee performance measured using...

  12. The measured performance of an air thermosyphon system

    Science.gov (United States)

    Marshall, L. S.; Burns, P. J.; Winn, C. B.

    Results of performance tests of a solar thermosyphon test cell are reported. The test cell comprised a structure on a concrete slab with fiberglass insulated walls. The north wall consisted of a styrofoam-insulated gravel-filled box, while the south wall featured double glazing over metal solar collectors. The ceiling was ducted to provide air flow from the south collector to the rock storage, and an air channel was built into the floor. A numerical model was developed of the expected performance of the cell, using an Euler technique to solve the transient energy and momentum equations. The temperature was monitored at various points of the structure and flow visualization studies were made with titanium tetrachloride. Heat was found to be stored in the upper portion of the rock box, which because of its size also inhibited circulation. Thermal comfort was determined to be available due to warm surfaces, rather than warm air.

  13. Using patient reports to measure health care system performance.

    Science.gov (United States)

    Hargraves, J L; Palmer, R H; Zapka, J; Nerenz, D; Frazier, H; Orav, E J; Warner, C; Ingard, J; Neisuler, R

    1993-01-01

    We developed a self-administered patient questionnaire that asks for data concerning the time to receive services (access to care), communication between providers (coordination of care), and follow up after tests and treatment (continuity of care). From these data, we construct rates of performance about the clinical management systems that support provision of these services. Rates of system performance are calculated for indicators using patients' responses to survey questions. These indicators add the number of patients reporting a problem of those patients who have encountered a particular clinical management system. Information derived from 3000 patient questionnaires is matched with data abstracted from health care medical records. The sensitivity and specificity of patient reports are being evaluated for all indicators classified as gold standards for medical records. Indicators considered gold standard items for patient reports are matched for agreement with any information contained in the medical record. Also, patient characteristics associated with accurate reporting is to be assessed using multivariate logistic regression models.

  14. Neoliberalism, Performance Measurement, and the Governance of American Academic Science

    OpenAIRE

    Irwin Feller

    2008-01-01

    The international thrust of neoliberal liberal policies on higher education systems has generally been to reduce governmental control over the operations of universities in de facto exchange for these institutions assuming increased responsibility for generating a larger share of their revenues and for providing quantitative evidence of performance. Differences in the structural and financial arrangements of the U.S. higher education and academic science system from those of other countries â...

  15. An Annotated Bibliography of Objective Pilot Performance Measures

    Science.gov (United States)

    1982-01-01

    MONITORING AGENCY NAME I ADDRESS( difemnt from Conollnd Office) IS. SECURITY CLASS. (of thi. report) Unclassified lie . DCL tASIiFiCATION...California Psychological Inventory (CPI), Eysenck Personality Questionnaire and General States Questionaire, (for personality), urinary catecholamines (free...each maneuver. Each scale consisted of a series of subscales for rating performance on each of the elements of the maneuver and an additional subscale

  16. THE PERFORMANCE OF THE ECONOMIC ENTITY MEASURED THROUGH ACCOUNTING INFORMATION

    OpenAIRE

    Marius Cristian Milos; Ioana Elena Nicu

    2012-01-01

    The users of financial statements need information regarding the resources of an economic entity and also data regarding the way in which the entity’s management is using resources. This information helps users to quantify efficiency and performance within an entity. There are many stakeholders who do show interest in an entity’s financial reports, including existing and potential investors, employees, lenders, suppliers, customers, regulators and other government agencies and not the least t...

  17. Measuring and reporting of the healthcare systems performances

    OpenAIRE

    2014-01-01

    The health care system is one of the most important social systems of each country. That is the reason for considerable interest among the policy makers in obtaining information that indicates the performance of their health care systems. This information is needed to set up a fundament for monitoring the progress of the health care system over time as well as its comparison with other health care systems. Starting hypothesis of this paper is that there is a need of...

  18. CORPORATE REPUTATION’S PLACE IN MEASURING BUSINESS PERFORMANCE

    OpenAIRE

    Ioana IRINA

    2014-01-01

    The growing research interest into corporate reputation is explained by its potential to create, maintain and increase financial performance. Favorable corporate reputations are intangible assets that offer a strategic competitive advantage to firms, explaining the relationship between reputation and profits. A new paradigm appeared while considering this dependence: does corporate reputation lead to value creation or does profit come first? Researchers investigated if profit is a cause or an...

  19. Validating Future Force Performance Measures (Army Class): Concluding Analyses

    Science.gov (United States)

    2016-06-01

    dimensions important to first-term Soldier performance: Adaptability to Changing Conditions, Relating to and Supporting Peers, Teamwork , Self-Management...Openness reflects the degree to which people are open to change (positive and negative) and to workplace variations in tasks, settings, and...reports, the dimensions were re-conceptualized to emphasize teamwork and team leadership. Specifically, the dimension “facilitating peer and team

  20. The Measure of Human Error: Direct and Indirect Performance Shaping Factors

    Energy Technology Data Exchange (ETDEWEB)

    Ronald L. Boring; Candice D. Griffith; Jeffrey C. Joe

    2007-08-01

    The goal of performance shaping factors (PSFs) is to provide measures to account for human performance. PSFs fall into two categories—direct and indirect measures of human performance. While some PSFs such as “time to complete a task” are directly measurable, other PSFs, such as “fitness for duty,” can only be measured indirectly through other measures and PSFs, such as through fatigue measures. This paper explores the role of direct and indirect measures in human reliability analysis (HRA) and the implications that measurement theory has on analyses and applications using PSFs. The paper concludes with suggestions for maximizing the reliability and validity of PSFs.