WorldWideScience

Sample records for directives fokker services

  1. 78 FR 68691 - Airworthiness Directives; Fokker Services B.V. Airplanes

    Science.gov (United States)

    2013-11-15

    ...) Fokker Manual Change Notification MCNM F100-143, dated August 10, 2012. (ii) Reserved. (3) For service... no comments on the NPRM (78 FR 46303, July 31, 2013) or on the determination of the cost to the... require adopting this AD as proposed except for minor editorial changes. We have determined that these...

  2. 76 FR 482 - Airworthiness Directives; Fokker Services B.V. Model F.28 Mark 1000, 2000, 3000, and 4000 Airplanes

    Science.gov (United States)

    2011-01-05

    ....12 inch) or more is available between the FQTU probes wiring and the surrounding reinforcement... Procedures (44 FR 11034, February 26, 1979); and 3. Will not have a significant economic impact, positive or... reinforcement structure, in accordance with the Accomplishment Instructions of Fokker Service Bulletin...

  3. 75 FR 43876 - Airworthiness Directives; Fokker Services B.V. Model F.28 Mark 0100 Airplanes

    Science.gov (United States)

    2010-07-27

    ... to stress corrosion, attributed to excessive bolt torque. Investigation of the recently failed bolts... this proposed AD, contact Goodrich Corporation, Landing Gear, 1400 South Service Road, West Oakville... to stress corrosion, attributed to excessive bolt torque. Investigation of the recently failed...

  4. 76 FR 20501 - Airworthiness Directives; Fokker Services B.V. Model F.27 Mark 050 Airplanes

    Science.gov (United States)

    2011-04-13

    ..., including the adequacy of existing regulations, the service history of airplanes subject to those... years after the effective date of this AD, do a general visual inspection for the presence of the rubber... by reference at the National Archives and Records Administration (NARA). For information on the...

  5. 76 FR 28373 - Airworthiness Directives; Fokker Services B.V. Model F.28 Mark 1000, 2000, 3000, and 4000 Airplanes

    Science.gov (United States)

    2011-05-17

    ... above, this AD requires the installation of a fuse packed in a jiffy junction [i.e., crimped wire in... June 23, 2010, including Fokker Drawing W57273, Sheet 002, Issue C, dated June 23, 2010, Fokker Drawing... in jiffy junctions [i.e., crimped wire in-line junction device], in accordance with the...

  6. 76 FR 35340 - Airworthiness Directives; Fokker Services B.V. Model F.28 Mark 0070 and 0100 Airplanes

    Science.gov (United States)

    2011-06-17

    ... previously modified, altered, or repaired in the areas addressed by this AD, the operator may not be able to... this service information under 5 U.S.C. 552(a) and 1 CFR part 51. (2) For service information... of the service information that is incorporated by reference at the National Archives and...

  7. 75 FR 69606 - Airworthiness Directives; Fokker Services B.V. Model F.28 Mark 0070 and 0100 Airplanes

    Science.gov (United States)

    2010-11-15

    ... South Service Road, West Oakville L6L 5Y7, Ontario, Canada; telephone 905-827-7777; e-mail jean.breed.... After cycling the landing gear, only a LH MLG unsafe indication remained. A go-around was initiated and... rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and 3....

  8. 76 FR 50115 - Airworthiness Directives; Fokker Services B.V. Model F.28 Mark 1000, 2000, 3000, and 4000 Airplanes

    Science.gov (United States)

    2011-08-12

    ..., altered, or repaired in the areas addressed by this AD, the operator may not be able to accomplish the... approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51... reference at the National Archives and Records Administration (NARA). For information on the availability...

  9. Fokker D.VII

    Science.gov (United States)

    1923-01-01

    Fokker D.VII: The Fokker D.VII was one of the best fighter aircraft of World War I, and was the only weapon used by the Central Powers specifically mentioned in the Versailles Treaty. The Central Powers surrendered 142 at the close of the war, and the Fokker company sold even more to the U. S. Air Service. Several were flown at Langley Field, but this one was the sole example operated by the NACA.

  10. 77 FR 26948 - Airworthiness Directives; Fokker Services B.V. Airplanes

    Science.gov (United States)

    2012-05-08

    ... Messier-Dowty main landing gear (MLG) units due to fatigue cracking in the area of the filler and bleeder...) main landing gear (MLG). (d) Subject Air Transport Association (ATA) of America Code 32: Landing Gear...) Install the torque link spacer with changed outer diameter, in accordance with the...

  11. 77 FR 29861 - Airworthiness Directives; Fokker Services B.V. Airplanes

    Science.gov (United States)

    2012-05-21

    ... low quantity''. The procedures prescribed the shut-off of the engine driven hydraulic pumps, resulting....28 Mark 0070 and 0100 airplanes. This AD was prompted by an in-flight failure of the hydraulic control panel, which resulted in the absence of pressure and quantity indication of the hydraulic...

  12. 77 FR 8181 - Airworthiness Directives; Fokker Services B.V. Airplanes

    Science.gov (United States)

    2012-02-14

    ... low quantity''. The procedures prescribed the shut-off of the engine driven hydraulic pumps, resulting... Mark 0070 and 0100 airplanes. This proposed AD was prompted by an in-flight failure of the hydraulic control panel, which resulted in the absence of pressure and quantity indication of the hydraulic...

  13. 77 FR 58765 - Airworthiness Directives; Fokker Services B.V. Airplanes

    Science.gov (United States)

    2012-09-24

    ... any category; serial numbers (S/N) 11340 through 11343 inclusive, 11347, 11348, 11350 through 11356... 11456 through 11585 inclusive. (d) Subject Air Transport Association (ATA) of America Code 24...

  14. 77 FR 16486 - Airworthiness Directives; Fokker Services B.V. Airplanes

    Science.gov (United States)

    2012-03-21

    ... on circuit breakers, contactors and terminal blocks of the EPC and battery relay panel. This proposed... and, depending on findings, adjustment of the torque values of nuts on circuit breakers, contactors... paragraphs (g)(1), (g)(2), and (g)(3) of this AD. (1) Do a torque check of the nuts and circuit...

  15. 78 FR 8058 - Airworthiness Directives; Fokker Services B.V. Airplanes

    Science.gov (United States)

    2013-02-05

    ... on circuit breakers, contactors, and terminal blocks of the electrical power center (EPC) and battery... of the nuts and circuit breakers, contactors, and terminal blocks of the EPC and battery relay panel... general visual inspection of the contacts and nuts on circuit breakers, contactors, and terminal blocks...

  16. 77 FR 21395 - Airworthiness Directives; Fokker Services B.V. Airplanes

    Science.gov (United States)

    2012-04-10

    ... and correct exponential crack growth, which could lead to failure of the lap joint over a certain... not detected and corrected, can result in an exponential crack growth rate, possibly leading to... this AD to detect and correct exponential crack growth, which could lead to failure of the lap...

  17. 76 FR 68668 - Airworthiness Directives; Fokker Services B.V. Model F.28 Mark 0100 Airplanes

    Science.gov (United States)

    2011-11-07

    ... be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Tom Rodriguez... (BLA) 2002-115/2 dated October 8, 2004 [which partially corresponds to FAA AD 2008-20-03, Amendment 39... and Airplane Flight Manual Amendment (j) Before further flight after accomplishing the...

  18. Gaseous microflow modeling using the Fokker-Planck equation

    Science.gov (United States)

    Singh, S. K.; Thantanapally, Chakradhar; Ansumali, Santosh

    2016-12-01

    We present a comparative study of gaseous microflow systems using the recently introduced Fokker-Planck approach and other methods such as: direct simulation Monte Carlo, lattice Boltzmann, and variational solution of Boltzmann-BGK. We show that this Fokker-Plank approach performs efficiently at intermediate values of Knudsen number, a region where direct simulation Monte Carlo becomes expensive and lattice Boltzmann becomes inaccurate. We also investigate the effectiveness of a recently proposed Fokker-Planck model in simulations of heat transfer, as a function of relevant parameters such as the Prandtl, Knudsen numbers. Furthermore, we present simulation of shock wave as a function of Mach number in transonic regime. Our results suggest that the performance of the Fokker-Planck approach is superior to that of the other methods in transition regime for rarefied gas flow and transonic regime for shock wave.

  19. 75 FR 35624 - Airworthiness Directives; Fokker Services B.V. Model F.27 Mark 500 and 600 Airplanes

    Science.gov (United States)

    2010-06-23

    ... an overextended MLG [main landing gear] sliding member after landing. During subsequent investigation it was found that an end stop had unscrewed itself to a certain extent. This caused the MLG torque... corrected, could lead to structural damage of the main gear and loss of control of the aeroplanes during...

  20. 75 FR 27668 - Airworthiness Directives; Fokker Services B.V. Model F.28 Mark 0070 and 0100 Airplanes

    Science.gov (United States)

    2010-05-18

    ... poppet seat of PBSOV [parking brake shut- off valve] Part Number (P/N) 70379. * * * This condition, if... PBSOV [parking brake shut- off valve] Part Number (P/N) 70379. The PBSOV installed on the incident... [parking brake shut- off valve] Part Number (P/N) 70379. * * * This condition, if not detected...

  1. 75 FR 66649 - Airworthiness Directives; Fokker Services B.V. Model F.28 Mark 0070 and 0100 Airplanes

    Science.gov (United States)

    2010-10-29

    ... pieces of hard plastic. These were identified as parts of the poppet seat of PBSOV [parking brake shut... PBSOV [parking brake shut- off valve] Part Number (P/N) 70379. The PBSOV installed on the incident... poppet seat of PBSOV [parking brake shut- off valve] Part Number (P/N) 70379. * * * This condition,...

  2. 75 FR 10696 - Airworthiness Directives; Fokker Services B.V. Model F.28 Mark 0070 and 0100 Airplanes

    Science.gov (United States)

    2010-03-09

    ... information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe... operation of the valve. This condition, if not corrected, may generate fuel asymmetry alerts when a valve... correcting a fuel asymmetry when a valve remains in the closed position after being selected open. One...

  3. 76 FR 28376 - Airworthiness Directives; Fokker Services B.V. Model F.28 Mark 1000, 2000, 3000, and 4000 Airplanes

    Science.gov (United States)

    2011-05-17

    ... 4000 airplanes, certificated in any category, all serial numbers. Note 1: This AD requires revisions to... airplane. Subject (d) Air Transport Association (ATA) of America Code 28: Fuel. Reason (e) The mandatory.... Inspection and Installation for Model F.28 Airplanes Serial Numbers 11003 Through 11041 and 11991 Through...

  4. 76 FR 18029 - Airworthiness Directives; Fokker Services B.V. Model F.28 Mark 1000, 2000, 3000, and 4000 Airplanes

    Science.gov (United States)

    2011-04-01

    ....12 inch) or more is available between the FQTU ] probes wiring and the surrounding reinforcement... significant economic impact, positive or negative, on a substantial number of small entities under the... FQTU wiring harness and the outer wing FQTU hole reinforcement structure, in accordance with...

  5. Fokker-Planck-Kolmogorov equations

    CERN Document Server

    Bogachev, Vladimir I; Röckner, Michael; Shaposhnikov, Stanislav V

    2015-01-01

    This book gives an exposition of the principal concepts and results related to second order elliptic and parabolic equations for measures, the main examples of which are Fokker-Planck-Kolmogorov equations for stationary and transition probabilities of diffusion processes. Existence and uniqueness of solutions are studied along with existence and Sobolev regularity of their densities and upper and lower bounds for the latter. The target readership includes mathematicians and physicists whose research is related to diffusion processes as well as elliptic and parabolic equations.

  6. [Direct access to physical therapy services].

    Science.gov (United States)

    Parag, Ayala; Jacobson, Eyal; Afek, Arnon

    2014-07-01

    This article presents findings from professional and scientific articles written on the subject of direct access to physical therapy services. Direct access is sometimes referred to as "self-referral"--the patient does not require a physician's referral prior to receiving physiotherapy treatment. The article provides insight from the experience of countries where direct access is accepted practice, which will serve as a theoretical and scientific basis for the use of direct access in Israel. Findings include the influence of direct access on the health care system: cost-benefit analysis, advantages and challenges, as well as the perspective of main stakeholders: physicians, physical therapists and patient-clients. .

  7. A Fokker-Planck model of hard sphere gases based on H-theorem

    Science.gov (United States)

    Gorji, M. Hossein; Torillhon, Manuel

    2016-11-01

    It has been shown recently that the Fokker-Planck kinetic model can be employed as an approximation of the Boltzmann equation for rarefied gas flow simulations [4, 5, 10]. Similar to the direct simulation Monte-Carlo (DSMC), the Fokker-Planck solution algorithm is based on the particle Monte-Carlo representation of the distribution function. Yet opposed to DSMC, here the particles evolve along independent stochastic paths where no collisions need to be resolved. This leads to significant computational advantages over DSMC, considering small Knudsen numbers [10]. The original Fokker-Planck model (FP) for rarefied gas flow simulations was devised according to the Maxwell type pseudo-molecules [4, 5]. In this paper a consistent Fokker-Planck equation is derived based on the Boltzmann collision integrals and maximum entropy distribution. Therefore the resulting model fulfills the H-theorem and leads to correct relaxation of velocity moments up to heat fluxes consistent with hard sphere interactions. For assessment of the model, simulations are performed for Mach 5 flow around a vertical plate using both Fokker-Planck and DSMC simulations. Compared to the original FP model, significant improvements are achieved at high Mach flows.

  8. Errata: Fokker, a clash of culture

    NARCIS (Netherlands)

    Heerkens, Johannes M.G.; Ulijn, Jan

    2000-01-01

    What role do cultural play in the survival of companies that face existential problems? We try to provide some answers by looking at the decline of the Dutch aircraft manufacturer Fokker. In 1996 this company went bankrupt and among the causes of this event cultural factors rank high, at least at

  9. Errata: Fokker, a clash of culture

    NARCIS (Netherlands)

    Heerkens, Hans; Ulijn, Jan

    2001-01-01

    What role do cultural play in the survival of companies that face existential problems? We try to provide some answers by looking at the decline of the Dutch aircraft manufacturer Fokker. In 1996 this company went bankrupt and among the causes of this event cultural factors rank high, at least at fi

  10. Statistics of the stochastically forced Lorenz attractor by the Fokker-Planck equation and cumulant expansions.

    Science.gov (United States)

    Allawala, Altan; Marston, J B

    2016-11-01

    We investigate the Fokker-Planck description of the equal-time statistics of the three-dimensional Lorenz attractor with additive white noise. The invariant measure is found by computing the zero (or null) mode of the linear Fokker-Planck operator as a problem of sparse linear algebra. Two variants are studied: a self-adjoint construction of the linear operator and the replacement of diffusion with hyperdiffusion. We also access the low-order statistics of the system by a perturbative expansion in equal-time cumulants. A comparison is made to statistics obtained by the standard approach of accumulation via direct numerical simulation. Theoretical and computational aspects of the Fokker-Planck and cumulant expansion methods are discussed.

  11. Generalized Fokker-Planck Equation for the Modified Landau-Lifshitz Equation with Poisson White Noise

    Directory of Open Access Journals (Sweden)

    S.I. Denisov

    2013-10-01

    Full Text Available Using the modified stochastic Landau-Lifshitz equation driven by Poisson white noise, we derive the generalized Fokker-Planck equation for the probability density function of the nanoparticle magnetic moment. In our calculations we employ the Ito interpretation of stochastic equations and take into account the fact that the magnetic moment direction can be changed by this noise instantaneously. The analysis of the stationary solution of the generalized Fokker-Planck equation shows that the distribution of the free magnetic moment in Poisson white noise is not uniform. This feature of the stationary distribution arises from using the Ito interpretation of the stochastic Landau-Lifshitz equation.

  12. Invariants of Fokker-Planck equations

    CERN Document Server

    Abe, Sumiyoshi

    2016-01-01

    A weak invariant of a stochastic system is defined in such a way that its expectation value with respect to the distribution function as a solution of the associated Fokker-Planck equation is constant in time. A general formula is given for time evolution of fluctuations of the invariants. An application to the problem of share price in finance is illustrated. It is shown how this theory makes it possible to reduce the growth rate of the fluctuations.

  13. Virtual Reference Services: Directions and Agendas.

    Science.gov (United States)

    Gray, Suzanne M.

    2000-01-01

    Analyzes Web sites of ten large research libraries in order to establish a basic understanding of how some major libraries are currently providing virtual reference services. Discusses centralization; email reference guidelines; creating a service economy; expanding hours of service; virtual users' needs; and real-time virtual reference.…

  14. A quadrature based method of moments for nonlinear Fokker-Planck equations

    Science.gov (United States)

    Otten, Dustin L.; Vedula, Prakash

    2011-09-01

    Fokker-Planck equations which are nonlinear with respect to their probability densities and occur in many nonequilibrium systems relevant to mean field interaction models, plasmas, fermions and bosons can be challenging to solve numerically. To address some underlying challenges, we propose the application of the direct quadrature based method of moments (DQMOM) for efficient and accurate determination of transient (and stationary) solutions of nonlinear Fokker-Planck equations (NLFPEs). In DQMOM, probability density (or other distribution) functions are represented using a finite collection of Dirac delta functions, characterized by quadrature weights and locations (or abscissas) that are determined based on constraints due to evolution of generalized moments. Three particular examples of nonlinear Fokker-Planck equations considered in this paper include descriptions of: (i) the Shimizu-Yamada model, (ii) the Desai-Zwanzig model (both of which have been developed as models of muscular contraction) and (iii) fermions and bosons. Results based on DQMOM, for the transient and stationary solutions of the nonlinear Fokker-Planck equations, have been found to be in good agreement with other available analytical and numerical approaches. It is also shown that approximate reconstruction of the underlying probability density function from moments obtained from DQMOM can be satisfactorily achieved using a maximum entropy method.

  15. Fokker's type action at a distance theory of gravitation

    Science.gov (United States)

    Turygin, A. Iu.

    1986-04-01

    An attempt is made to develop a theory of direct gravitational interaction of an arbitrary order, i.e., a many-particle interaction. The situation considered is that of a moving particle in a fixed Riemannian space-time which interacts with a system characterized by a definite energy momentum tensor. A linear formulation of the Fokker type action is used to define particle equations of motion in a geodesic form in a metric of arbitrary order. A proof is developed to show that the resulting metric satisfies the Einstein equations and is commensurate with the Lorentz gauge in Wheeler-Feynman electrodynamics. When applied to many-particle interactions, the absorber theory of gravitational radiation that has been defined is effective only for a linear approximation solution to the Einstein equation, and will require further work to serve as a general absorber theory.

  16. 34 CFR 300.227 - Direct services by the SEA.

    Science.gov (United States)

    2010-07-01

    ... 34 Education 2 2010-07-01 2010-07-01 false Direct services by the SEA. 300.227 Section 300.227... CHILDREN WITH DISABILITIES Local Educational Agency Eligibility § 300.227 Direct services by the SEA. (a) General. (1) An SEA must use the payments that would otherwise have been available to an LEA or to a...

  17. ESO and Fokker Space Sign Contract about VLTI Delay Line

    Science.gov (United States)

    1998-03-01

    The European Southern Observatory is building the world's largest optical telescope, the Very Large Telescope (VLT) , at the ESO Paranal Observatory in Chile. The VLT consists of four 8.2-m unit telescopes and several smaller, moveable Auxiliary Telescopes. When coupled as the giant VLT Interferometer (VLTI) , they will together provide the sharpest images ever obtained by any optical telescope. It will in principle be able to see an astronaut on the surface of the Moon, 400,000 km away. The VLTI Delay Lines Fokker Space (Leiden, The Netherlands) has been awarded a contract for the delivery of the Delay Line of the VLTI. This is a mechanical-optical system that will compensate the optical path differences of the light beams from the individual telescopes. Such a system is necessary to ensure that the light from all telescopes arrive in the same phase at the focal point of the interferometer. Otherwise, the very sharp interferometric images cannot be obtained. ESO PR Photo 08/98 [JPEG, 102k] Schematic representation of the VLTI Delay Line, showing the retro-reflector on its moving base. For more details, please consult the technical explanation below. This highly accurate system will be developed in close co-operation with the Dutch institute TNO-TPD (Netherlands Organization for Applied Scientific Research - Institute of Applied Physics) . The most innovative feature of the Delay Line is the new control strategy, a two-stage control system, based on linear motor technology, combined with high accuracy piezo-electric control elements. This enables the system to position the so-called cat's eye reflector system with an accuracy of only a few nanometers (millionth of a millimetre (nm)) over a stroke length of 60 metres. Within radio astronomy, interferometric techniques have been applied by Dutch astronomers since many years. They will now be able to contribute with their extensive knowledge of such systems to the next generation of astronomical interferometric

  18. Collecting Societies, Competition and the Services Directive

    DEFF Research Database (Denmark)

    Riis, Thomas

    2011-01-01

    The market for collective management of copyrights in the EU is in transition and the collecting societies are facing a number of challenges primarily based on the EU rules on competition and the freedom to provide services. Some of the major right holders are withdrawing their rights from...... the system of reciprocal representation agreements which fragments the repertoire. This is partly due to the market evolution and the emergence of new business models but also promoted by the European Commission initiatives intended to introduce a certain degree of competition in the collective management...

  19. Mental health services--maintaining strategic direction.

    Science.gov (United States)

    McFadyen, J A; Farrington, A

    1998-09-01

    AIM AND KEY ISSUES: This article reviews the theoretical basis of strategic management in an attempt to provide managers with a better understanding of the underpinning concepts and consequent actions they need to take to avoid loss of control and ultimate failure. The authors argue that community care for the severely mentally ill is failing and that in part the reason for this perceived failure is a closer allegiance to primary care that has shifted the focus away from mental illness. Such a shift, coupled with poor management and a desire by Community Mental Health Nurses (CMHNs) to retain a broad focus and maintain the 'autonomy' they gain when not held in the gravitational grasp of Consultant Psychiatrists, has resulted in strategic drift. The authors suggest 10 possible reasons to explain why CMHNs currently fail to meet the needs of the severely mentally ill. Among these are a lack of explicit strategic implementation plans, professional ambivalence and self-interest, poor management of resources and conflicting demands from key interest groups. It seems that mental health services in this country have reached the point where resistance to change should be crumbling in the face of perceived failure to deliver the required services. Whilst it could be argued that a major and potent source of internal change is performance gaps, few things force change more than sudden and unexpected information about poor organizational performance.

  20. Generalized Stochastic Fokker-Planck Equations

    Directory of Open Access Journals (Sweden)

    Pierre-Henri Chavanis

    2015-05-01

    Full Text Available We consider a system of Brownian particles with long-range interactions. We go beyond the mean field approximation and take fluctuations into account. We introduce a new class of stochastic Fokker-Planck equations associated with a generalized thermodynamical formalism. Generalized thermodynamics arises in the case of complex systems experiencing small-scale constraints. In the limit of short-range interactions, we obtain a generalized class of stochastic Cahn-Hilliard equations. Our formalism has application for several systems of physical interest including self-gravitating Brownian particles, colloid particles at a fluid interface, superconductors of type II, nucleation, the chemotaxis of bacterial populations, and two-dimensional turbulence. We also introduce a new type of generalized entropy taking into account anomalous diffusion and exclusion or inclusion constraints.

  1. Fokker-Planck formalism in magnetic resonance simulations.

    Science.gov (United States)

    Kuprov, Ilya

    2016-09-01

    This paper presents an overview of the Fokker-Planck formalism for non-biological magnetic resonance simulations, describes its existing applications and proposes some novel ones. The most attractive feature of Fokker-Planck theory compared to the commonly used Liouville - von Neumann equation is that, for all relevant types of spatial dynamics (spinning, diffusion, stationary flow, etc.), the corresponding Fokker-Planck Hamiltonian is time-independent. Many difficult NMR, EPR and MRI simulation problems (multiple rotation NMR, ultrafast NMR, gradient-based zero-quantum filters, diffusion and flow NMR, off-resonance soft microwave pulses in EPR, spin-spin coupling effects in MRI, etc.) are simplified significantly in Fokker-Planck space. The paper also summarises the author's experiences with writing and using the corresponding modules of the Spinach library - the methods described below have enabled a large variety of simulations previously considered too complicated for routine practical use.

  2. Quality of pathology services: new strategic directions required.

    Science.gov (United States)

    Isouard, Godfrey

    2013-01-01

    The purpose of this paper is to discuss the challenges faced in Australia to maintain and sustain quality in pathology services, and present new strategic directions to address such challenges. The paper is a review of the literature on pathology services and its quality of delivery and emerging issues. Major issues are emerging in pathology services which threaten to impact on the quality of future service delivery. These issues include workforce shortages, growth in inappropriate testing, advancing technology, rural and remote region servicing, and a negative image of the sector. New strategic directions are shown to be necessary in terms of workforce planning and addressing the escalation of new technology and innovation. In order to sustain quality of services, a significant change from current practice is recommended, with strong leadership as the change driver. This paper highlights the potential impact of emerging issues on future pathology-service quality. Significant implications for service delivery and patient care quality are reviewed. This paper provides valuable information on current strategic and planning issues impacting on pathology services. It provides new solutions from the perspective of leadership of health and health services.

  3. Vlasov-Fokker-Planck modeling of magnetized plasma

    Energy Technology Data Exchange (ETDEWEB)

    Thomas, Alexander [Univ. of Michigan, Ann Arbor, MI (United States)

    2016-08-01

    Understanding the magnetic fields that can develop in high-power-laser interactions with solid-density plasma is important because such fields significantly modify both the magnitude and direction of electron heat fluxes. The dynamics of such fields evidently have consequences for inertial fusion energy applications, as the coupling of the laser beams with the walls or pellet and the development of temperature inhomogeneities are critical to the uniformity of the implosion and potentially the success of, for example, the National Ignition Facility. To study these effects, we used the code Impacta, a two-dimensional, fully implicit, Vlasov-Fokker-Planck code with self-consistent magnetic fields and a hydrodynamic ion model, designed for nanosecond time-scale laser-plasma interactions. Heat-flux effects in Ohm’s law under non-local conditions was investigated; physics that is not well captured by standard numerical models but is nevertheless important in fusion-related scenarios. Under such conditions there are numerous interesting physical effects, such as collisional magnetic instabilities, amplification of magnetic fields, re-emergence of non-locality through magnetic convection, and reconnection of magnetic field lines and redistribution of thermal energy. In this project highlights included the first full scale kinetic simulations of a magnetized hohlraum [Joglekar 2016] and the discovery of a new magnetic reconnection mechanism [Joglekar 2014] as well as a completed PhD thesis and the production of a new code for Inertial Fusion research.

  4. New Directions for Social Services: Much Ado About Nothing.

    Science.gov (United States)

    Seltzer, Mildred M

    2016-01-01

    This article raises the question about whether or not our social services programs are taking new directions or whether there is much ado about nothing. Demographic data and their social implications are presented as background for the discussion. While rhetoric may have changed, the general impression is that we are walking in an Heraclitian stream in which there is both sameness and change.

  5. Fokker-Planck Equation and Thermodynamic System Analysis

    Directory of Open Access Journals (Sweden)

    Umberto Lucia

    2015-02-01

    Full Text Available The non-linear Fokker-Planck equation or Kolmogorov forward equation is currently successfully applied for deep analysis of irreversibility and it gives an excellent approximation near the free energy minimum, just as Boltzmann’s definition of entropy follows from finding the maximum entropy state. A connection to Fokker-Planck dynamics and the free energy functional is presented and discussed—this approach has been particularly successful to deal with metastability. We focus our attention on investigating and discussing the fundamental role of dissipation analysis in metastable systems. The major novelty of our approach is that the obtained results enable us to reveal an appealing, and previously unexplored relationship between Fokker-Planck equation and the associated free energy functional. Namely, we point out that the dynamics may be regarded as a gradient flux, or a steepest descent, for the free energy.

  6. New SPDF Directions and Evolving Services Supporting Heliophysics Research

    Science.gov (United States)

    McGuire, R.; Bilitza, D.; Candey, R.; Chimiak, R.; Cooper, J.; Fung, S.; Han, D.; Harris, B.; Johnson, R.; Klipsch, C.; Leckner, H.; Liu, M.; Papitashvili, N.; Kovalick, T.; Roberts, A.

    2006-12-01

    The next advances in Heliophysics science and its paradigm of a Great Observatory require an increasingly integrated and transparent data environment, where data can be easily accessed and used across the boundaries of both missions and traditional disciplines. The Space Physics Data Facility (SPDF) project includes uniquely important multi-mission data services with current data from most operating space physics missions. This paper reviews the capabilities of key services now available and the directions in which they are expected to evolve to enable future multi-mission correlative research. The Coordinated Data Analysis Web (CDAWeb) and Satellite Situation Center Web (SSCWeb), critically supported by the Common Data Format (CDF) effort and supplemented by more focused science services such as OMNIWeb and technical services such as data format translations are important operational capabilities serving the international community today (and cited last year by 20% of the papers published in JGR Space Physics). These services continue to add data from most current missions as SPDF works with new missions such as THEMIS to help enable their unique science goals and the meaningful sharing of their data in a multi-mission correlative context. Recent enhancements to CDF, our 3D Java interactive orbit viewer (TIPSOD), the CDAWeb Plus system, the new inclusion of the VSPO effort into SPDF, our plans to support the SPASE data dictionary effort and our continuing thrust towards fully-functional web services APIs to allow ready invocation from distributed external middleware and clients will be shown.

  7. Fokker-Planck Study of Tokamak Electron Cyclotron Resonance Heating

    Institute of Scientific and Technical Information of China (English)

    SHIBingren; LONGYongxing; DONGJiaqi; LIWenzhong; JIAOYiming; WANGAike

    2002-01-01

    In this study, we add a subroutine for describing the electron cyclotron resonant heating calculation to the Fokker-Planck code. By analyzing the wave-particle resonance condition in tokamak plasma and the fast motion of electrons along magnetic field lines, suitable quasi-linear diffusion coefficients are given.

  8. Analytical Solution of the Time Fractional Fokker-Planck Equation

    Directory of Open Access Journals (Sweden)

    Sutradhar T.

    2014-05-01

    Full Text Available A nonperturbative approximate analytic solution is derived for the time fractional Fokker-Planck (F-P equation by using Adomian’s Decomposition Method (ADM. The solution is expressed in terms of Mittag- Leffler function. The present method performs extremely well in terms of accuracy, efficiency and simplicity.

  9. Multi-diffusive nonlinear Fokker-Planck equation

    Science.gov (United States)

    Ribeiro, Mauricio S.; Casas, Gabriela A.; Nobre, Fernando D.

    2017-02-01

    Nonlinear Fokker-Planck equations, characterized by more than one diffusion term, have appeared recently in literature. Here, it is shown that these equations may be derived either from approximations in a master equation, or from a Langevin-type approach. An H-theorem is proven, relating these Fokker-Planck equations to an entropy composed by a sum of contributions, each of them associated with a given diffusion term. Moreover, the stationary state of the Fokker-Planck equation is shown to coincide with the equilibrium state, obtained by extremization of the entropy, in the sense that both procedures yield precisely the same equation. Due to the nonlinear character of this equation, the equilibrium probability may be obtained, in most cases, only by means of numerical approaches. Some examples are worked out, where the equilibrium probability distribution is computed for nonlinear Fokker-Planck equations presenting two diffusion terms, corresponding to an entropy characterized by a sum of two contributions. It is shown that the resulting equilibrium distribution, in general, presents a form that differs from a sum of the equilibrium distributions that maximizes each entropic contribution separately, although in some cases one may construct such a linear combination as a good approximation for the equilibrium distribution.

  10. Effective fields in the Fokker-Feynman-Wheeler scheme

    Science.gov (United States)

    Bolokhov, S. V.; Kolybasova, V. V.

    We discuss the possible ways to generalize the so-called action-at-a-distance principle (initially developed for the electromagnetic interactions in the works of Fokker, Feynman, and Wheeler) on the case of gravity and non-Abelian fields. Our approach is based on the relational-statistical theory of spacetime and interactions developed by Yu. S. Vladimirov.

  11. RECONCEPTUALIZING CONSENT FOR DIRECT-TO-CONSUMER HEALTH SERVICES.

    Science.gov (United States)

    Spector-Bagdady, Kayte

    2015-01-01

    The market for direct-to-consumer (DTC) health services continues to grow rapidly with former patients converting to customers for the opportunity to purchase varied diagnostic tests without the involvement of their clinician. For the first time a DTC genetic testing company is advertising health-related reports "that meet [Food and Drug Administration] standards for being clinically and scientifically valid." Ethicists and regulatory agencies alike have recognized the need for a more informed transaction in the DTC context, but how should we classify a commercial transaction for something normally protected by a duty of care? How can we assure informed agreements in an industry with terms and conditions as varied as the services performed? The doctrine of "informed consent" began as an ethical construct building on the promise of beneficence in the clinical relationship and elevating the principle of autonomy--but in the DTC context should we hold providers to legal standards of informed consent and associated medical malpractice liability, or contractual obligations where consumers would seek remedy for breach? This Article analyzes the fine balance that must be struck in an industry where companies are selling services for entertainment or non-medical purposes that possess the capacity to produce serious and disquieting medical information. It begins by reviewing current standards of consent in the clinical setting from both a legal and ethical perspective and then lays forth current standards for DTC consent using two currently controversial case studies: that of keepsake fetal ultrasound and genetic testing. DTC keepsake ultrasound and genetic testing providers attempt to de-medicalize the devices used for these procedures from their intended medical uses to non-medical uses. But while keepsake ultrasound is marketed as "intended for entertainment purposes only," it can provide medical information as an incidental finding. 23andMe currently purports to be the

  12. Equilibrium distribution of heavy quarks in fokker-planck dynamics

    Science.gov (United States)

    Walton; Rafelski

    2000-01-01

    We obtain an explicit generalization, within Fokker-Planck dynamics, of Einstein's relation between drag, diffusion, and the equilibrium distribution for a spatially homogeneous system, considering both the transverse and longitudinal diffusion for dimension n>1. We provide a complete characterization of the equilibrium distribution in terms of the drag and diffusion transport coefficients. We apply this analysis to charm quark dynamics in a thermal quark-gluon plasma for the case of collisional equilibration.

  13. FIFPC, a fast ion Fokker--Planck code

    Energy Technology Data Exchange (ETDEWEB)

    Fowler, R.H.; Callen, J.D.; Rome, J.A.; Smith, J.

    1976-07-01

    A computer code is described which solves the Fokker--Planck equation for the velocity space distribution of fast ions injected into a tokamak plasma. The numerical techniques are described and use of the code is outlined. The program is written in FORTRAN IV and is modularized in order to provide greater flexibility to the user. A program listing is provided and the results of sample cases are presented.

  14. An Efficient Numerical Approach for Nonlinear Fokker-Planck equations

    Science.gov (United States)

    Otten, Dustin; Vedula, Prakash

    2009-03-01

    Fokker-Planck equations which are nonlinear with respect to their probability densities that occur in many nonequilibrium systems relevant to mean field interaction models, plasmas, classical fermions and bosons can be challenging to solve numerically. To address some underlying challenges in obtaining numerical solutions, we propose a quadrature based moment method for efficient and accurate determination of transient (and stationary) solutions of nonlinear Fokker-Planck equations. In this approach the distribution function is represented as a collection of Dirac delta functions with corresponding quadrature weights and locations, that are in turn determined from constraints based on evolution of generalized moments. Properties of the distribution function can be obtained by solution of transport equations for quadrature weights and locations. We will apply this computational approach to study a wide range of problems, including the Desai-Zwanzig Model (for nonlinear muscular contraction) and multivariate nonlinear Fokker-Planck equations describing classical fermions and bosons, and will also demonstrate good agreement with results obtained from Monte Carlo and other standard numerical methods.

  15. Exact solutions of the Fokker-Planck equation from an nth order supersymmetric quantum mechanics approach

    Energy Technology Data Exchange (ETDEWEB)

    Schulze-Halberg, Axel [Escuela Superior de Fisica y Matematicas, IPN, Unidad Profesional Adolfo Lopez Mateos, Col. San Pedro Zacatenco, Edificio 9, 07738 Mexico D.F. (Mexico)], E-mail: xbataxel@gmail.com; Rivas, Jesus Morales [Universidad Autonoma Metropolitana - Azcapotzalco, CBI - Area de Fisica Atomica Molecular Aplicada, Av. San Pablo 180, Reynosa Azcapotzalco, 02200 Mexico D.F. (Mexico)], E-mail: jmr@correo.azc.uam.mx; Pena Gil, Jose Juan [Universidad Autonoma Metropolitana - Azcapotzalco, CBI - Area de Fisica Atomica Molecular Aplicada, Av. San Pablo 180, Reynosa Azcapotzalco, 02200 Mexico D.F. (Mexico)], E-mail: jjpg@correo.azc.uam.mx; Garcia-Ravelo, Jesus [Escuela Superior de Fisica y Matematicas, IPN, Unidad Profesional Adolfo Lopez Mateos, Col. San Pedro Zacatenco, Edificio 9, 07738 Mexico D.F. (Mexico)], E-mail: ravelo@esfm.ipn.mx; Roy, Pinaki [Physics and Applied Mathematics Unit, Indian Statistical Institute, Calcutta-700108 (India)], E-mail: pinaki@isical.ac.in

    2009-04-20

    We generalize the formalism of nth order Supersymmetric Quantum Mechanics (n-SUSY) to the Fokker-Planck equation for constant diffusion coefficient and stationary drift potential. The SUSY partner drift potentials and the corresponding solutions of the Fokker-Planck equation are given explicitly. As an application, we generate new solutions of the Fokker-Planck equation by means of our first- and second-order transformation.

  16. 75 FR 4450 - Financial Management Service; Proposed Collection of Information: Direct Deposit Sign-Up Form

    Science.gov (United States)

    2010-01-27

    ... Fiscal Service Financial Management Service; Proposed Collection of Information: Direct Deposit Sign-Up Form AGENCY: Financial Management Service, Fiscal Service, Treasury. ACTION: Notice and Request for comments. SUMMARY: The Financial Management Service, as part of its continuing effort to reduce paperwork...

  17. 76 FR 23859 - Financial Management Service Proposed Collection of Information: CMIA Annual Report and Direct...

    Science.gov (United States)

    2011-04-28

    ... Fiscal Service Financial Management Service Proposed Collection of Information: CMIA Annual Report and Direct Cost Claims AGENCY: Financial Management Service, Fiscal Service, Treasury. ACTION: Notice and request for comments. SUMMARY: The Financial Management Service, as part of its continuing effort to...

  18. Measurement in Service Businesses: Challenges and Future Directions

    Science.gov (United States)

    Tyagi, Rajesh Kumar

    This chapter presents challenges faced by service businesses while implementing a measurement system. A review of existing frameworks is presented and a new framework, the Service Scorecard, is introduced. The Service Scorecard is an adaptation of the Six Sigma Business Scorecard for the service sector. The framework has also been influenced by existing frameworks such as the Malcom Baldrige award criteria, the Balanced Scorecard, the European Quality award and the Service Profit Chain model. The seven elements of the Service Scorecard are Growth, Leadership, Acceleration, Collaboration, Innovation, Execution, and Retention. The examples of measurement systems are presented with concrete real-world case examples. Final thoughts and the challenges faced are also presented.

  19. Service Quality and Customer Satisfaction: An Assessment and Future Directions.

    Science.gov (United States)

    Hernon, Peter; Nitecki, Danuta A.; Altman, Ellen

    1999-01-01

    Reviews the literature of library and information science to examine issues related to service quality and customer satisfaction in academic libraries. Discusses assessment, the application of a business model to higher education, a multiple constituency approach, decision areas regarding service quality, resistance to service quality, and future…

  20. A Fractional Fokker-Planck Model for Anomalous Diffusion

    CERN Document Server

    anderson, Johan; Moradi, Sara

    2014-01-01

    In this paper we present a study of anomalous diffusion using a Fokker-Planck description with fractional velocity derivatives. The distribution functions are found using numerical means for varying degree of fractionality observing the transition from a Gaussian distribution to a L\\'evy distribution. The statistical properties of the distribution functions are assessed by a generalized expectation measure and entropy in terms of Tsallis statistical mechanics. We find that the ratio of the generalized entropy and expectation is increasing with decreasing fractionality towards the well known so-called sub-diffusive domain, indicating a self-organising behavior.

  1. Fokker-Planck equation with linear and time dependent load forces

    Science.gov (United States)

    Sau Fa, Kwok

    2016-11-01

    The motion of a particle described by the Fokker-Planck equation with constant diffusion coefficient, linear force (-γ (t)x) and time dependent load force (β (t)) is investigated. The solution for the probability density function is obtained and it has the Gaussian form; it is described by the solution of the linear force with the translation of the position coordinate x. The constant load force preserves the stationary state of the harmonic potential system, however the time dependent load force may not preserve the stationary state of the harmonic potential system. Moreover, the n-moment and variance are also investigated. The solutions are obtained in a direct and pedagogical manner readily understandable by undergraduate and graduate students.

  2. 47 CFR 25.215 - Technical requirements for space stations in the Direct Broadcast Satellite Service.

    Science.gov (United States)

    2010-10-01

    ... the Direct Broadcast Satellite Service. 25.215 Section 25.215 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER SERVICES SATELLITE COMMUNICATIONS Technical Standards § 25.215 Technical requirements for space stations in the Direct Broadcast Satellite Service. In addition to §...

  3. Disconfirming User Expectations of the Online Service Experience: Inferred versus Direct Disconfirmation Modeling.

    Science.gov (United States)

    O'Neill, Martin; Palmer, Adrian; Wright, Christine

    2003-01-01

    Disconfirmation models of online service measurement seek to define service quality as the difference between user expectations of the service to be received and perceptions of the service actually received. Two such models-inferred and direct disconfirmation-for measuring quality of the online experience are compared (WebQUAL, SERVQUAL). Findings…

  4. Linear analysis of the momentum cooling Fokker-Planck equation

    Energy Technology Data Exchange (ETDEWEB)

    Rosenzweig, J.B.

    1989-05-04

    In order to optimize the extraction scheme used to take antiprotons out of the accumulator, it is necessary to understand the basic processes involved. At present, six antiproton bunches per Tevatron store are removed sequentially by RF unstacking from the accumulator. The phase space dynamics of this process, with its accompanying phase displacement deceleration and phase space dilution of portions of the stack, can be modelled by numerical solution of the longitudinal equations of motion for a large number of particles. We have employed the tracking code ESME for this purpose. In between RF extractions, however, the stochastic cooling system is turned on for a short time, and we must take into account the effect of momentum stochastic cooling on the antiproton energy spectrum. This process is described by the Fokker-Planck equation, which models the evolution of the antiproton stack energy distribution by accounting for the cooling through an applied coherent drag force and the competing heating of the stack due to diffusion, which can arise from intra-beam scattering, amplifier noise and coherent (Schottky) effects. In this note we examine the aspects of the Fokker-Planck in the regime where the nonlinear terms due to Schottky effects are small. This discussion ultimately leads to solution of the equation in terms of an orthonormal set of functions which are closely related to the quantum simple-harmonic oscillator wave-functions. 5 refs.

  5. Services tradeability, trade liberalization and foreign direct investment

    NARCIS (Netherlands)

    J.G.M. van Marrewijk (Charles); J.J. Stibora (Joachim); A. Vaal, de (Albert)

    1996-01-01

    textabstractThe article analyzes a two-country general equilibrium model to examine the role played by services in the world economy. Services play an increasingly important role in the world economy, as observed, for instance, by the growing share in employment, production, exports and foreign dire

  6. Future Directions for Building Services Technologies in Denmark

    DEFF Research Database (Denmark)

    Marsh, Rob

    2008-01-01

      The hypothesis of this paper is that industrial transformation in the Danish construction sector needs in the future to focus on integrating building services technologies into the buildings. This can be illustrated by analysing historical developments in building services usage, exploring desi...

  7. A Fokker-Planck based kinetic model for diatomic rarefied gas flows

    Science.gov (United States)

    Gorji, M. Hossein; Jenny, Patrick

    2013-06-01

    A Fokker-Planck based kinetic model is presented here, which also accounts for internal energy modes characteristic for diatomic gas molecules. The model is based on a Fokker-Planck approximation of the Boltzmann equation for monatomic molecules, whereas phenomenological principles were employed for the derivation. It is shown that the model honors the equipartition theorem in equilibrium and fulfills the Landau-Teller relaxation equations for internal degrees of freedom. The objective behind this approximate kinetic model is accuracy at reasonably low computational cost. This can be achieved due to the fact that the resulting stochastic differential equations are continuous in time; therefore, no collisions between the simulated particles have to be calculated. Besides, because of the devised energy conserving time integration scheme, it is not required to resolve the collisional scales, i.e., the mean collision time and the mean free path of molecules. This, of course, gives rise to much more efficient simulations with respect to other particle methods, especially the conventional direct simulation Monte Carlo (DSMC), for small and moderate Knudsen numbers. To examine the new approach, first the computational cost of the model was compared with respect to DSMC, where significant speed up could be obtained for small Knudsen numbers. Second, the structure of a high Mach shock (in nitrogen) was studied, and the good performance of the model for such out of equilibrium conditions could be demonstrated. At last, a hypersonic flow of nitrogen over a wedge was studied, where good agreement with respect to DSMC (with level to level transition model) for vibrational and translational temperatures is shown.

  8. Business-to-Business Customer Acquisition by Means of Direct Marketing for Services SMEs

    OpenAIRE

    Novikov, Alexey

    2016-01-01

    The research discusses the problem of business-to-business services SMEs’ customer acquisition by means of direct marketing. The main objective of the study was to gain a deeper understanding of the problem of customer acquisition by means of direct marketing to explore the cost-effective direct marketing communication channels for business-to-business services SMEs. The interrelation of customer acquisition and the concepts of business-to-business services marketing, customer relatio...

  9. Fokker-Planck approach to stochastic delay differential equations

    Science.gov (United States)

    Guillouzic, Steve

    2001-10-01

    Models written in terms of stochastic delay differential equations (SDDE's) have recently appeared in a number of fields, such as physiology, optics, and climatology. Unfortunately, the development of a Fokker-Planck approach for these equations is being hampered by their non-Markovian nature. In this thesis, an exact Fokker- Planck equation (FPE) is formulated for univariate SDDE's involving Gaussian white noise. Although this FPE is not self-sufficient, it is found to be helpful in at least two different contexts: with a short delay approximation and under an appropriate separation of time scales. In the short delay approximation, a Taylor expansion is applied to an SDDE with nondelayed diffusion and yields a nondelayed stochastic differential equation. The aforementioned FPE then allows the derivation of an alternate and complementary approximation of the original SDDE. This method is illustrated with linear and logistic SDDE's. Under the separation of time scales assumption, the FPE of a bistable system is reduced to a form that is uniquely determined by the steady-state probability density when the diffusion term of the SDDE is nondelayed. In the context of an overdamped particle with delayed coupling to a symmetrical and stochastically driven potential, the resulting FPE is used with standard techniques to express the transition rate between wells in terms of the noise amplitude and of the steady-state probability density. The same is also accomplished for the mean first passage time from one point to another. This whole approach is then applied to the case of a quartic potential, for which all realisations eventually stabilise on an oscillatory trajectory with an ever increasing amplitude. Although this latter phenomenon prevents the existence of a steady-state limit, a pseudo- steady-state probability density can be defined and used instead of the non-existent steady-state one when the transition rate to these unbounded oscillatory trajectories is

  10. Parallelized Vlasov-Fokker-Planck solver for desktop personal computers

    Science.gov (United States)

    Schönfeldt, Patrik; Brosi, Miriam; Schwarz, Markus; Steinmann, Johannes L.; Müller, Anke-Susanne

    2017-03-01

    The numerical solution of the Vlasov-Fokker-Planck equation is a well established method to simulate the dynamics, including the self-interaction with its own wake field, of an electron bunch in a storage ring. In this paper we present Inovesa, a modularly extensible program that uses opencl to massively parallelize the computation. It allows a standard desktop PC to work with appropriate accuracy and yield reliable results within minutes. We provide numerical stability-studies over a wide parameter range and compare our numerical findings to known results. Simulation results for the case of coherent synchrotron radiation will be compared to measurements that probe the effects of the microbunching instability occurring in the short bunch operation at ANKA. It will be shown that the impedance model based on the shielding effect of two parallel plates can not only describe the instability threshold, but also the presence of multiple regimes that show differences in the emission of coherent synchrotron radiation.

  11. Adjoint Fokker-Planck equation and runaway electron dynamics

    CERN Document Server

    Liu, Chang; Boozer, Allen H; Bhattacharjee, Amitava

    2016-01-01

    A new method to obtain the runaway probability and the expected slowing-down time for runaway electrons is developed, by solving the adjoint Fokker-Planck equation in momentum space. The runaway probability function has a smooth transition at the runaway separatrix, which can be attributed to the effect of the pitch angle scattering term in the kinetic equation. The expected slowing-down time gives a new way to estimate the runaway current decay time in experiments. The result shows that the decay rate of high energy electron is very slow when E is close to the critical electric field, which helps elucidate the hysteresis effect seen in the runaway electron population. Given the same numerical accuracy, the new method is more efficient than the Monte Carlo simulation.

  12. Improved Fokker-Planck Equation for Resonance Line Scattering

    CERN Document Server

    Rybicki, G B

    2006-01-01

    A new Fokker-Planck equation is developed for treating resonance line scattering, especially relevant to the treatment of Lyman alpha in the early universe. It is a "corrected" form of the equation of Rybicki & Dell'Antonio that now obeys detailed balance, so that the approach to thermal equilibrium is properly described. The new equation takes into account the energy changes due to scattering off moving particles, the recoil term of Basko, and stimulated scattering. One result is a surprising unification of the equation for resonance line scattering and the Kompaneets equation. An improved energy exchange formula due to resonance line scattering is derived. This formula is compared to previous formulas of Madau, Meikson, & Rees (1997) and Chen & Miralda-Escud\\'e (2004).

  13. Direct-to-consumer drug marketing: public service or disservice?

    Science.gov (United States)

    Berger, J T; Kark, P; Rosner, F; Packer, S; Bennett, A J

    2001-05-01

    Pharmaceutical industry spending on direct-to-consumer advertising has been increasing rapidly. While the primary goal of direct-to-consumer advertising is to sell drugs, supposed secondary goals include patient education and improved health. However, these benefits of direct-to-consumer advertising are unproved. Moreover, such advertising may create unnecessary tension between the patient and the patient's physician and insurer, and may divert physicians' efforts away from important patient concerns, and toward marketing-generated discussions. On the other hand, direct-to-consumer advertising may lead to patient-doctor encounters that would not have occurred otherwise. Direct-to-consumer advertising should be modified to unambiguously benefit the health-care interests of consumers and patients.

  14. Burnout, Stress and Direct Student Services among School Counselors

    Science.gov (United States)

    Mullen, Patrick R.; Gutierrez, Daniel

    2016-01-01

    The burnout and stress experienced by school counselors is likely to have a negative influence on the services they provide to students, but there is little research exploring the relationship among these variables. Therefore, we report findings from our study that examined the relationship between practicing school counselors' (N = 926) reported…

  15. Public Service Motivation Research : Achievements, Challenges, and Future Directions

    NARCIS (Netherlands)

    Perry, James L.; Vandenabeele, Wouter

    2015-01-01

    This article takes stock of public service motivation research to identify achievements, challenges, and an agenda for research to build on progress made since 1990. After enumerating achievements and challenges, the authors take stock of progress on extant proposals to strengthen research. In addit

  16. Public Service Motivation Research : Achievements, Challenges, and Future Directions

    NARCIS (Netherlands)

    Perry, James L.; Vandenabeele, Wouter|info:eu-repo/dai/nl/323038816

    2015-01-01

    This article takes stock of public service motivation research to identify achievements, challenges, and an agenda for research to build on progress made since 1990. After enumerating achievements and challenges, the authors take stock of progress on extant proposals to strengthen research. In

  17. Examining direct service worker turnover in three long-term care industries in Ohio.

    Science.gov (United States)

    Ejaz, Farida K; Bukach, Ashley M; Dawson, Nicole; Gitter, Robert; Judge, Katherine S

    2015-01-01

    This is the first study to examine direct service worker turnover and its predictors across three provider types: nursing homes, home health agencies, and providers of services for the developmentally disabled. Stratified random sampling procedures were used to select provider types across five geographic regions in Ohio. Data were collected from administrative staff. Findings indicated that annual direct service worker turnover did not significantly vary by provider type (mean = 33%). Predictors of turnover related to job burnout, negative social support, and region. Policymakers can promote practices to lower direct service worker turnover such as addressing burnout and increasing support.

  18. Directions in healthcare research: pointers from retailing and services marketing.

    Science.gov (United States)

    Van Rompay, Thomas L J; Tanja-Dijkstra, Karin

    2010-01-01

    Although the importance of the environment in relation to healing processes has been well established, empirical evidence for environmental effects on patient well-being and behavior is sparse. In addition, few attempts have been made to integrate insights from related fields of research such as retailing and services marketing with findings from healthcare studies. In this paper, relevant findings and insights from these domains are discussed. What insights and findings from retailing and services marketing are (potentially) of interest to the healthcare context, and how should one interpret and follow up on these results in healthcare environments? Research in retailing and services marketing indicates that physical environmental factors (i.e., music and scent) and social environmental factors (i.e., crowded conditions) may affect consumer satisfaction and well-being. In addition, environmental effects have been shown to vary with contextual factors (e.g., the type of environment) and consumer needs (e.g., the extent to which consumers value social contact or stimulation in a specific setting). Although the evidence base for environmental factors in health environments is steadily growing, few attempts have been made to integrate findings from both domains. The findings presented indicate that environmental variables such as music and scent can contribute to patient well-being and overall satisfaction. In addition, findings suggest that these variables may be used to counteract the negative effects resulting from crowded conditions in different healthcare units. Taking into account recent developments in the healthcare industry, the importance of creating memorable and pleasant patient experiences is likely to grow in the years to come. Hence, the finding that subtle and relatively inexpensive manipulations may affect patient well-being in profound ways should inspire follow-up research aimed at unraveling the specifics of environmental influences in health

  19. Application of Generalized Fokker-Planck Theory To Electron And Photon Transport In Tissue

    CERN Document Server

    Olbrant, Edgar

    2009-01-01

    We study a deterministic method for particle transport in tissue in selected medical applications. Generalized Fokker-Planck (GFP) theory has been developed to improve the Fokker-Planck (FP) equation in cases where scattering is forward-peaked and where there is a sufficient amount of large-angle scattering. We compare grid-based numerical solutions to Fokker-Planck and Generalized Fokker-Planck (GFP) in realistic applications. Electron dose calculations in heterogeneous parts of the human body are performed. Accurate electron scattering cross sections are therefore included and their incorporation in our model is extensively described. Moreover, we solve GFP approximations of the radiative transport equation to investigate reflectance and transmittance of light in tissue. All results are compared with either Monte Carlo or discrete-ordinates transport solutions.

  20. Fokker-Planck description of electron and photon transport in homogeneous media

    Science.gov (United States)

    Akcasu, A. Ziya; Holloway, James Paul

    1997-06-01

    Starting from a Fokker-Planck description of particle transport, which is valid when the scattering is forwardly peaked and the energy change in scattering is small, we systematically obtain an approximate diffusionlike equation for the particle density by eliminating the direction variable Ω-hat with an elimination scheme based on Zwanzig's projection operator formalism in the interaction representation. The elimination procedure closely follows one described by Grigolini and Marchesoni [in Memory Function Approaches to Stochastic Problems in Condensed Matter, edited by Myron W. Evans, Paolo Grigolini, and Guiseppe P. Parravicini, Advances in Physical Chemistry, Vol. 62 (Wiley-Interscience, New York, 1985), Chap. II, p. 29], but with a different projection operator. The resulting diffusion equation is correct up to the second order in the coupling operator between the particle direction and position variable. The diffusion coefficients and mobility in the resulting diffusion equation depend on the initial distribution of the particles in direction and on the path length traveled by the particles. The full solution is obtained for a monoenergetic and monodirectional pulsed point source of particles in an infinite homogeneous medium. This solution is used to study the penetration and the transverse and longitudinal spread of the particles as they are transported through the medium. Application to diffusive wave spectroscopy in calculating the path-length distribution of photons, as well as application to dose calculations in tissue due to an electron beam are mentioned.

  1. Fokker-Planck equation resolution for N variables. Application examples; Aplicaciones del programa CHAPKOL para la resolucion de ecuaciones Fokker-Planck en N variables

    Energy Technology Data Exchange (ETDEWEB)

    Munoz, A.; Garcia-Olivares, A.

    1993-07-01

    A set of problems which are reducible to Fokker-Planck equations are presented. Those problems have been solved by using the CHAPKOL library. This library of programs solves stochastic Fokker-Plank equations in one or several dimensions by using the Chapman- Kolmogorov integral. This method calculates the probability distribution at a time t + dt from a distribution given at time t through a convolution integral in which the integration is the product of the distribution function at time t and the Green function of the Fokker-Planck equation. The method have some numerical advantages when compared with finite differences algorithms. The accuracy of the method is analysed in several specific cases. (Author) 9 refs.

  2. Introduction to Mobile Trajectory Based Services: A New Direction in Mobile Location Based Services

    Science.gov (United States)

    Khokhar, Sarfraz; Nilsson, Arne A.

    The mandate of E911 gave birth to the idea of Location Based Services (LBS) capitalizing on the knowledge of the mobile location. The underlying estimated location is a feasible area. There is yet another class of mobile services that could be based on the mobility profiling of a mobile user. The mobility profile of a mobile user is a set of the routine trajectories of his or her travel paths. We called such services as Mobile Trajectory Based Services (MTBS). This paper introduces MTBS and functional architecture of an MTBS system. Suitability of different location estimation technologies for MTBS has been discussed and supported with simulation results.

  3. Numerical solution of the Fokker--Planck equations for a multi-species plasma

    Energy Technology Data Exchange (ETDEWEB)

    Killeen, J.; Mirin, A.A.

    1977-03-11

    Two numerical models used for studying collisional multispecies plasmas are described. The mathematical model is the Boltzmann kinetic equation with Fokker-Planck collision terms. A one-dimensional code and a two-dimensional code, used for the solution of the time-dependent Fokker-Planck equations for ion and electron distribution functions in velocity space, are described. The required equations and boundary conditions are derived and numerical techniques for their solution are given.

  4. JPSS Science Data Services for the Direct Readout Community

    Science.gov (United States)

    Chander, Gyanesh; Lutz, Bob

    2014-01-01

    The Suomi National Polar-orbiting Partnership (S-NPP) and Joint Polar Satellite System (JPSS) High Rate Data (HRD) link provides Direct Broadcast data to users in real-time, utilizing their own remote field terminals. The Field Terminal Support (FTS) provides the resources needed to support the Direct Readout communities by providing software, documentation, and periodic updates to enable them to produce data products from SNPP and JPSS. The FTS distribution server will also provide the necessary ancillary and auxiliary data needed for processing the broadcasts, as well as making orbital data available to assist in locating the satellites of interest. In addition, the FTS provides development support for the algorithm and software through GSFC Direct Readout Laboratory (DRL) International Polar Orbiter Processing Package (IPOPP) and University of Wisconsin (UWISC) Community Satellite Processing Package (CSPP), to enable users to integrate the algorithms into their remote terminals. The support the JPSS Program provides to the institutions developing and maintaining these two software packages, will demonstrate the ability to produce ready-to-use products from the HRD link and provide risk reduction effort at a minimal cost. This paper discusses the key functions and system architecture of FTS.

  5. 77 FR 49721 - International Services Surveys and Direct Investment Surveys Reporting

    Science.gov (United States)

    2012-08-17

    ... comment rulemaking procedures. See, e.g., Direct Investment Surveys: BE-12, Benchmark Survey of Foreign... in services and direct investment surveys. The surveys are provided for by the International.... Galler, Chief, Direct Investment Division (BE-50), Bureau of Economic Analysis, U.S. Department...

  6. Parallel Fokker-Planck-DSMC algorithm for rarefied gas flow simulation in complex domains at all Knudsen numbers

    Science.gov (United States)

    Küchlin, Stephan; Jenny, Patrick

    2017-01-01

    A major challenge for the conventional Direct Simulation Monte Carlo (DSMC) technique lies in the fact that its computational cost becomes prohibitive in the near continuum regime, where the Knudsen number (Kn)-characterizing the degree of rarefaction-becomes small. In contrast, the Fokker-Planck (FP) based particle Monte Carlo scheme allows for computationally efficient simulations of rarefied gas flows in the low and intermediate Kn regime. The Fokker-Planck collision operator-instead of performing binary collisions employed by the DSMC method-integrates continuous stochastic processes for the phase space evolution in time. This allows for time step and grid cell sizes larger than the respective collisional scales required by DSMC. Dynamically switching between the FP and the DSMC collision operators in each computational cell is the basis of the combined FP-DSMC method, which has been proven successful in simulating flows covering the whole Kn range. Until recently, this algorithm had only been applied to two-dimensional test cases. In this contribution, we present the first general purpose implementation of the combined FP-DSMC method. Utilizing both shared- and distributed-memory parallelization, this implementation provides the capability for simulations involving many particles and complex geometries by exploiting state of the art computer cluster technologies.

  7. A Parallelized Vlasov-Fokker-Planck-Solver for Desktop PCs

    CERN Document Server

    Schönfeldt,; Brosi,; Miriam,; Schwarz,; Markus,; Steinmann,; L., Johannes; Müller,; Anke-Susanne,

    2016-01-01

    The numerical solution of the Vlasov-Fokker-Planck equation is a well established method to simulate the dynamics, including the self-interaction with its own wake field, of an electron bunch in a storage ring. In this paper we present Inovesa, a modularly extensible program that uses OpenCL to massively parallelize the computation. It allows a standard desktop PC to work with appropriate accuracy and yield reliable results within minutes. We provide numerical stability-studies over a wide parameter range and compare our numerical findings to known results. Simulation results for the case of coherent synchrotron radiation will be compared to measurements that probe the effects of the micro-bunching instability occurring in the short bunch operation at ANKA. It will be shown that the impedance model based on the shielding effect of two parallel plates can not only describe the instability threshold, but also the presence of multiple regimes that show differences in the emission of coherent synchrotron radiatio...

  8. Parallelized Vlasov-Fokker-Planck solver for desktop personal computers

    Directory of Open Access Journals (Sweden)

    Patrik Schönfeldt

    2017-03-01

    Full Text Available The numerical solution of the Vlasov-Fokker-Planck equation is a well established method to simulate the dynamics, including the self-interaction with its own wake field, of an electron bunch in a storage ring. In this paper we present Inovesa, a modularly extensible program that uses opencl to massively parallelize the computation. It allows a standard desktop PC to work with appropriate accuracy and yield reliable results within minutes. We provide numerical stability-studies over a wide parameter range and compare our numerical findings to known results. Simulation results for the case of coherent synchrotron radiation will be compared to measurements that probe the effects of the microbunching instability occurring in the short bunch operation at ANKA. It will be shown that the impedance model based on the shielding effect of two parallel plates can not only describe the instability threshold, but also the presence of multiple regimes that show differences in the emission of coherent synchrotron radiation.

  9. A Fokker-Planck Study of Dense Rotating Stellar Clusters

    CERN Document Server

    Girash, John

    2012-01-01

    The dynamical evolution of dense stellar systems is simulated using a two-dimensional Fokker-Planck method, with the goal of providing a model for the formation of supermassive stars which could serve as seed objects for the supermassive black holes of quasars. This work follows and expands on earlier 1-D studies of spherical clusters of main-sequence stars. The 2-D approach allows for the study of rotating systems, as would be expected due to cosmological tidal torquing; other physical effects included are collisional mergers of stars and a bulk stellar bar perturbation in the gravitational potential. The 3 Myr main-sequence lifetime for large stars provides an upper limit on simulation times. Two general classes of initial systems are studied: Plummer spheres, which represent stellar clusters, and \\gamma=0 spheres, which model galactic spheroids. At the initial densities of the modeled systems, mass segregation and runaway stellar collisions alone are insufficient to induce core collapse within the lifetime...

  10. Consumers' and workers' perspectives about consumer-directed services in the United States.

    Science.gov (United States)

    Swaine, Jamie G; Parish, Susan L; Igdalsky, Leah; Powell, Robyn M

    2016-07-01

    Consumer direction is a service delivery model that shifts decision-making from agencies to the individuals they serve. Using government funding, consumers hire, supervise, and schedule their own staff and maintain control over the delivery of their services. This study sought to understand the process of consumer direction as well as the experiences and perspectives of both the consumers and employees. The study also sought to better understand if and how consumer direction allows the consumer to direct his or her life, the impact consumer direction may have on the individual's health and health care, and how employment in consumer directed programs impacts the workers providing direct care services. This qualitative study included interviews with consumers (N = 20) and workers (N = 15) in Virginia, a southern state in the US. Semi-structured phone interviews were conducted by one member of the research team and transcribed and coded for themes by the research team using grounded theory methodology. Consumers reported greater control over their services and increased access to health care, compared to what they previously received with traditional services. Conversely, consumers reported challenges in managing their staff and fulfilling the role of an employer. Employees reported a lack of training prior to starting their jobs, as well as an inability to live off on low hourly wages. Still, the majority of employees reported job satisfaction and fulfillment. Policymakers should expand and strengthen the consumer directed program. Copyright © 2016 Elsevier Inc. All rights reserved.

  11. New supplier list online. Implementation of the Energy Services Directive; Neue Anbieterliste online. Umsetzung der Energiedienstleistungsrichtlinie

    Energy Technology Data Exchange (ETDEWEB)

    Bittner, Wulf [Bundesamt fuer Wirtschaft und Ausfuhrkontrolle (BAFA), Eschborn (DE). Bundesstelle fuer Energieeffizienz (BfEE)

    2011-06-15

    Based on the European Energy Services Directive the German law on energy services and other energy efficiency measures originated. Among other things, energy suppliers and energy companies are obliged to inform their customers on offers for energy efficiency measures. One possibility in order to comply with this obligation is the reference to the provider list for energy services in which energy consultants also may register.

  12. Bi-directional Multi Dimension CAP Transmission for Smart Grid Communication Services

    DEFF Research Database (Denmark)

    Zhang, Xu; Binti Othman, Maisara; Pang, Xiaodan

    2012-01-01

    We experimentally demonstrate bi-directional multi dimension carrierless amplitude and phase (CAP) transmission for smart grid communication services based on optical fiber networks. The proposed system is able to support multi-Gb/s transmission with high spectral efficiency.......We experimentally demonstrate bi-directional multi dimension carrierless amplitude and phase (CAP) transmission for smart grid communication services based on optical fiber networks. The proposed system is able to support multi-Gb/s transmission with high spectral efficiency....

  13. Adaptive particle-cell algorithm for Fokker-Planck based rarefied gas flow simulations

    Science.gov (United States)

    Pfeiffer, M.; Gorji, M. H.

    2017-04-01

    Recently, the Fokker-Planck (FP) kinetic model has been devised on the basis of the Boltzmann equation (Jenny et al., 2010; Gorji et al., 2011). Particle Monte-Carlo schemes are then introduced for simulations of rarefied gas flows based on the FP kinetics. Here the particles follow independent stochastic paths and thus a spatio-temporal resolution coarser than the collisional scales becomes possible. In contrast to the direct simulation Monte-Carlo (DSMC), the computational cost is independent of the Knudsen number resulting in efficient simulations at moderate/low Knudsen flows. In order to further exploit the efficiency of the FP method, the required particle-cell resolutions should be found, and a cell refinement strategy has to be developed accordingly. In this study, an adaptive particle-cell scheme applicable to a general unstructured mesh is derived for the FP model. Virtual sub cells are introduced for the adaptive mesh refinement. Moreover a sub cell-merging algorithm is provided to honor the minimum required number of particles per cell. For assessments, the 70 degree blunted cone reentry flow (Allgre et al., 1997) is studied. Excellent agreement between the introduced adaptive FP method and DSMC is achieved.

  14. eHealth services and Directive on Electronic Commerce 2000/31/EC.

    Science.gov (United States)

    Van Gyseghem, Jean-Marc

    2008-01-01

    We often restrict the analysis of eHealth services to a concept of privacy. In this article, we'll demonstrate that other legislation can apply to those services as Directive 2000/31/EC on Ecommerce. By creating telematic networks or infrastructure, eHealth services are offering information services. But what are the consequences with such concept? What are the duties and rights for the actors of the network(s)? We'll try to answer to some questions, even if it won't be exhaustive.

  15. A Fuzzy Directed Graph-Based QoS Model for Service Composition

    Institute of Scientific and Technical Information of China (English)

    GUO Sanjun; DOU Wanchun; FAN Shaokun

    2007-01-01

    Web service composition lets developers create applications on top of service-oriented computing and its native description, discovery, and communication capabilities. This paper mainly focuses on the QoS when the concrete composition structure is unknown. A QoS model of service composition is presented based on the fuzzy directed graph theory. According to the model,a recursive algorithm is also described for calculating such kind of QoS. And, the feasibility of this QoS model and the recursive algorithm is verified by a case study. The proposed approach enables customers to get a possible value of the QoS before they achieve the service.

  16. Face-to-face: Changing future teachers through direct service learning

    Directory of Open Access Journals (Sweden)

    Ron Caro

    2012-04-01

    Full Text Available This qualitative research study analyzed the changes in social dispositions of pre-service teachers. These pre-service teachers tutored homeless children in an urban homeless shelter as part of a direct service learning project. Utilizing surveys at the beginning of the study and at the end, and reflective journals of participants, data was analyzed according to changes in the following dispositions: understanding students with social needs, anticipated changes in future teaching dispositions, and anticipated changes in pedagogical approaches. Findings support the need for imbedding direct service learning into teacher preparation programs. KEYWORDSteacher preparation, social dispositions, service-learning, community-based research, civic engagement, community engagement, community partnerships

  17. The essence and market advantages of the direct sales of goods and services

    Directory of Open Access Journals (Sweden)

    A.O. Dvigun

    2011-10-01

    Full Text Available The article deals with the economic substance of the method of direct selling of goods and services, analyzes the features of this method as a marketing strategy, discusses the advantages and prospects of technology introduction of direct sales.

  18. Exempting Mental Health Peer Support Services From Copayments. Direct final rule; confirmation of effective date.

    Science.gov (United States)

    2015-11-05

    The Department of Veterans Affairs (VA) published a direct final rule amending its regulation that governs VA services that are not subject to copayment requirements for inpatient hospital care or outpatient medical care. Specifically, the regulation is amended to exempt mental health peer support services from having any required copayment. VA received no adverse comments concerning the direct final rule or its companion substantially identical proposed rule published in the Federal Register on the same date. This document confirms that the direct final rule became effective on January 27, 2015. In a companion document in this issue of the Federal Register, we are withdrawing as unnecessary the proposed rule.

  19. Direct-to-consumer sales of genetic services on the Internet.

    Science.gov (United States)

    Gollust, Sarah E; Wilfond, Benjamin S; Hull, Sara Chandros

    2003-01-01

    PURPOSE The increasing use of the Internet to obtain genetics information and to order medical services without a prescription, combined with a rise in direct-to-consumer marketing for genetic testing, suggests the potential for the Internet to be used to sell genetic services. METHODS A systematic World Wide Web search was conducted in May 2002 to assess the availability of genetic services sold directly to consumers on the Internet. RESULTS Out of 105 sites that offered genetic services directly, most offered non-health-related services, including parentage confirmation testing (83%), identity testing (56%), and DNA banking (24%); however, health-related genetic tests were offered through 14 sites (13%). The health-related genetic tests available ranged from standard tests, such as hemochromatosis and cystic fibrosis, to more unconventional tests related to nutrition, behavior, and aging. Of these 14 sites, 5 described risks associated with the genetic services and 6 described the availability of counseling. CONCLUSIONS The availability of direct sales of health-related genetic tests creates the potential for inadequate pretest decision making, misunderstanding test results, and access to tests of questionable clinical value.

  20. Fokker-Planck equation in the presence of a uniform magnetic field

    Science.gov (United States)

    Li, Ding; Dong, Chao; Zhang, Wenlu

    2016-10-01

    The Fokker-Planck equation in the presence of a uniform magnetic field is derived through the transform method. It has the same form as the case of no magnetic field but the Fokker-Planck coefficients are calculated based on a different motion equation and have different physical interpretations. Within the binary collision model, the Fokker-Planck coefficients are calculated explicitly which are free from infinite sums of Bessel functions. They can be used to investigate the effects of magnetic field on velocity slowing down, diffusion, and temperature relaxation conveniently. The kinetic equation is also manipulated into the Landau form and shown to be identical to the result obtained from the BBGKY approach when the collective effects are neglected and satisfy the conservation of particles, momentum, and energy. Supported by National Special Research Program of China For ITER and National Natural Science Foundation of China.

  1. How accurate are the nonlinear chemical Fokker-Planck and chemical Langevin equations?

    Science.gov (United States)

    Grima, Ramon; Thomas, Philipp; Straube, Arthur V

    2011-08-28

    The chemical Fokker-Planck equation and the corresponding chemical Langevin equation are commonly used approximations of the chemical master equation. These equations are derived from an uncontrolled, second-order truncation of the Kramers-Moyal expansion of the chemical master equation and hence their accuracy remains to be clarified. We use the system-size expansion to show that chemical Fokker-Planck estimates of the mean concentrations and of the variance of the concentration fluctuations about the mean are accurate to order Ω(-3∕2) for reaction systems which do not obey detailed balance and at least accurate to order Ω(-2) for systems obeying detailed balance, where Ω is the characteristic size of the system. Hence, the chemical Fokker-Planck equation turns out to be more accurate than the linear-noise approximation of the chemical master equation (the linear Fokker-Planck equation) which leads to mean concentration estimates accurate to order Ω(-1∕2) and variance estimates accurate to order Ω(-3∕2). This higher accuracy is particularly conspicuous for chemical systems realized in small volumes such as biochemical reactions inside cells. A formula is also obtained for the approximate size of the relative errors in the concentration and variance predictions of the chemical Fokker-Planck equation, where the relative error is defined as the difference between the predictions of the chemical Fokker-Planck equation and the master equation divided by the prediction of the master equation. For dimerization and enzyme-catalyzed reactions, the errors are typically less than few percent even when the steady-state is characterized by merely few tens of molecules.

  2. Fokker-Planck equation in the presence of a uniform magnetic field

    Energy Technology Data Exchange (ETDEWEB)

    Dong, Chao, E-mail: chaodong@iphy.ac.cn [Center for Plasma Theory and Computation, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China); Department of Nuclear Engineering, Seoul National University, Seoul 151-744 (Korea, Republic of); Zhang, Wenlu [Center for Plasma Theory and Computation, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China); Li, Ding, E-mail: dli@ustc.edu.cn [Center for Plasma Theory and Computation, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China); Department of Modern Physics, University of Science and Technology of China, Anhui Hefei 230026 (China)

    2016-08-15

    The Fokker-Planck equation in the presence of a uniform magnetic field is derived which has the same form as the case of no magnetic field but with different Fokker-Planck coefficients. The coefficients are calculated explicitly within the binary collision model, which are free from infinite sums of Bessel functions. They can be used to investigate relaxation and transport phenomena conveniently. The kinetic equation is also manipulated into the Landau form from which it is straightforward to compare with previous results and prove the conservation laws.

  3. On the Connection between the Hamilton-Jacobi-Bellman and the Fokker-Planck Control Frameworks

    KAUST Repository

    Annunziato, Mario

    2014-09-01

    In the framework of stochastic processes, the connection between the dynamic programming scheme given by the Hamilton-Jacobi-Bellman equation and a recently proposed control approach based on the Fokker-Planck equation is discussed. Under appropriate assumptions it is shown that the two strategies are equivalent in the case of expected cost functionals, while the FokkerPlanck formalism allows considering a larger class of objectives. To illustrate the connection between the two control strategies, the cases of an Itō stochastic process and of a piecewise-deterministic process are considered.

  4. Global Hypoellipticity and Compactness of Resolvent for Fokker-Planck Operator

    CERN Document Server

    Li, Wei-Xi

    2009-01-01

    In this paper we study the Fokker-Planck operator with potential $V(x),$ and analyze some kind of conditions imposed on the potential to ensure the validity of global hypoelliptic estimates. As a consequence, we obtain the compactness of resolvent of the Fokker-Planck operator if either the Witten Laplacian on 0-forms has a compact resolvent or some additional assumption on the behavior of the potential at infinity is fulfilled. This work improves the previous results of H\\'erau-Nier and Helffer-Nier, by obtaining a better global hypoelliptic estimate under weaker assumptions on the potential.

  5. Nonlinear Fokker-Planck Equation in the Model of Asset Returns

    Directory of Open Access Journals (Sweden)

    Alexander Shapovalov

    2008-04-01

    Full Text Available The Fokker-Planck equation with diffusion coefficient quadratic in space variable, linear drift coefficient, and nonlocal nonlinearity term is considered in the framework of a model of analysis of asset returns at financial markets. For special cases of such a Fokker-Planck equation we describe a construction of exact solution of the Cauchy problem. In the general case, we construct the leading term of the Cauchy problem solution asymptotic in a formal small parameter in semiclassical approximation following the complex WKB-Maslov method in the class of trajectory concentrated functions.

  6. ECUACION DE FOKKER-PLANCK APLICADA A UNA COLUMNA DE PLASMA ELECTRONICO

    OpenAIRE

    CALDERON MALDONADO, FRANCISCO ALEJANDRO

    2010-01-01

    Se estudia el problema de los estados meta-estables en una columna de plasma a través de las soluciones de la ecuación de Fokker-Planck. Para el proceso de Ornstein-Uhlenbeck se proponen resultados de la ecuación de Fokker-Planck lineal y no lineal. Se analiza la evolución temporal de la solución de Ornstein-Uhlenbeck para un potencial de tipo cuadrático. Finalmente, se aplican las soluciones generales del proceso de Ornstein-Uhlenbeck para los potenciales de Peurrung-Fajans.

  7. Self-consistent full-wave and Fokker-Planck calculations for ion cyclotron heating in non-Maxwellian plasmas

    Science.gov (United States)

    Jaeger, E. F.

    2005-10-01

    High-performance burning plasma devices such as ITER will contain significant concentrations of non-thermal plasma particles arising from fusion reactions, neutral beam injection, and wave-driven diffusion in velocity space. Initial studies in 1-D [1] and experimental results [2] show that non-thermal energetic ions can significantly alter wave propagation and absorption in the ion cyclotron range of frequencies. In addition, these ions can absorb power at high harmonics of the cyclotron frequency where conventional 2-D global-wave models are not valid. In this work, the all-orders, full-wave solver AORSA [3] is generalized to treat non-Maxwellian velocity distributions. Quasi-linear diffusion coefficients are derived directly from the global wave fields and used to calculate the energetic ion velocity distribution with the CQL3D Fokker-Planck code [4]. Alternately, the quasi-linear coefficients can be calculated numerically by integrating the Lorentz force equations along particle orbits. Self-consistency between the wave electric field and resonant ion distribution function is achieved by iterating between the full-wave and Fokker-Planck solutions.[1] R. J. Dumont, C. K. Phillips and D. N. Smithe, Phys. Plasmas 12, 042508 (2005).[2] A. L. Rosenberg, J. E. Menard, J. R. Wilson, et al., Phys. Plasmas 11, 2441(2004).[3] E. F. Jaeger, L. A. Berry, J. R. Myra, et al., Phys. Rev. Lett. 90, 195001-1 (2003).[4] R. W. Harvey and M. G. McCoy, in Proceedings of the IAEA Technical Committee Meeting on Advances in Simulation and Modeling of Thermonuclear Plasmas (IAEA, Montreal, 1992).

  8. Fokker-Planck Type Equations with Sobolev Diffusion Coefficients and BV Drift Coefficients

    Institute of Scientific and Technical Information of China (English)

    De Jun LUO

    2013-01-01

    Combining Le Bris and Lions' arguments with Ambrosio's commutator estimate for BV vector fields,we prove in this paper the existence and uniqueness of solutions to the Fokker-Planck type equations with Sobolev diffusion coefficients and BV drift coefficients.

  9. Convergence of the Vlasov-Poisson-Fokker- Planck system to the incompressible Euler equations

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    We establish the convergence of the Vlasov-Poisson-Fokker-Planck system to the incompressible Euler equations in this paper. The convergence is rigorously proved on the time interval where the smooth solution to the incompressible Euler equations exists. The proof relies on the compactness argument and the so-called relative-entropy method.

  10. Exact solutions of the Fokker-Planck equation for the Malthus-Verhulst model

    Science.gov (United States)

    Brey, J. J.; Aizpuru, C.; Morillo, M.

    1987-04-01

    A class of particular solutions of the Fokker-Planck equation associated with the Malthus-Verhulst model is obtained. These time-dependent solutions are exact and allow us to study the evolution of both the distribution function and the moments. A careful analysis is carried out for the two simplest cases, showing the different possible types of relaxation.

  11. Invariance principle and model reduction for the Fokker-Planck equation

    Science.gov (United States)

    Karlin, I. V.

    2016-11-01

    The principle of dynamic invariance is applied to obtain closed moment equations from the Fokker-Planck kinetic equation. The analysis is carried out to explicit formulae for computation of the lowest eigenvalue and of the corresponding eigenfunction for arbitrary potentials. This article is part of the themed issue 'Multiscale modelling at the physics-chemistry-biology interface'.

  12. Green function of the double fractional Fokker-Planck equation: Path integral and stochastic differential equations

    OpenAIRE

    Kleinert, H.; Zatloukal, V.

    2015-01-01

    The statistics of rare events, the so-called black-swan events, is governed by non-Gaussian distributions with heavy power-like tails. We calculate the Green functions of the associated Fokker-Planck equations and solve the related stochastic differential equations. We also discuss the subject in the framework of path integration.

  13. Design and numerical investigation of swirl recovery vanes for the Fokker 29 propeller

    NARCIS (Netherlands)

    Wang, Y.; Li, Q.; Eitelberg, G.; Veldhuis, L.L.M.; Kotsonis, M.

    2014-01-01

    Swirl recovery vanes (SRVs) are a set of stationary vanes located downstream from a propeller, which may recover some of the residual swirl from the propeller, hoping for an improvement in both thrust and efficiency. The SRV concept design for a scaled version representing the Fokker 29 propeller is

  14. INFORMATION TECHNOLOGY SERVICE MANAGEMENT PROCESSES MATURITY IN THE BRAZILIAN FEDERAL DIRECT ADMINISTRATION

    Directory of Open Access Journals (Sweden)

    Maria Albeti Vieira Vitoriano

    2015-12-01

    Full Text Available This work aims at the scrutiny of the current situation of the Information Technology Service Management practices within the Brazilian Federal Direct Administration, from the perceptions of the Information Technology Managers of twelve Ministries. The methodology used followed the Process Maturity Framework as a guideline, which is a maturity model whose patterns are described in ITIL v3. The work consists of interviews with questions related to the five maturity levels, as follows: initial, repetitive, defined, managed and optimized. Information on the five basic Information Technology Service Management processes was collected. Besides the classification of the maturity levels of the processes, the interviews allowed us to gather information about the possible causes that hinder the improvement of the maturity of the processes. The outcomes of the survey on the researched ministries showed low maturity level in all the assessed service management processes. The Incident Management Process presented the highest level of maturity, while Problem Management proved to be the most flawed one, in relation to maturity. The other assessed processes, like Change Management, Service Assets and Configuration Management and Release and Deployment Management presented some sort of homogeneity among the ministries. As for the probable causes that hinder the improvement of the maturity level of the Information Technology Service Management processes, pointed by the managers, the following one stand out: the reduced staff, the lack of resources, the gap between the organizational targets and their processes aims, and the lack of skilled labor.

  15. Closing the reduced position-space Fokker-Planck equation for shear-induced diffusion using the Physalis method

    Science.gov (United States)

    Sierakowski, Adam J.; Lukassen, Laura J.

    2016-11-01

    In the shear flow of non-Brownian particles, we describe the long-time diffusive processes stochastically using a Fokker-Planck equation. Previous work has indicated that a Fokker-Planck equation coupling the probability densities of position and velocity spaces may be appropriate for describing this phenomenon. The stochastic description, integrated over velocity space to obtain a reduced position-space Fokker-Planck equation, contains unknown space diffusion coefficients. In this work, we use the Physalis method for simulating disperse particle flows to verify the colored-noise velocity space model (an Ornstein-Uhlenbeck process) by comparing the simulated long-time diffusion rate with the diffusion rate proposed by the theory. We then use the simulated data to calculate the unknown space diffusion coefficients that appear in the reduced position-space Fokker-Planck equation and summarize the results. This study was partially supported by US NSF Grant CBET1335965.

  16. Convergence to global equilibrium for Fokker-Planck equations on a graph and Talagrand-type inequalities

    Science.gov (United States)

    Che, Rui; Huang, Wen; Li, Yao; Tetali, Prasad

    2016-08-01

    In 2012, Chow, Huang, Li and Zhou [7] proposed the Fokker-Planck equations for the free energy on a finite graph, in which they showed that the corresponding Fokker-Planck equation is a nonlinear ODE defined on a Riemannian manifold of probability distributions. Different choices for inner products result in different Fokker-Planck equations. The unique global equilibrium of each equation is a Gibbs distribution. In this paper we proved that the exponential rate of convergence towards the global equilibrium of these Fokker-Planck equations. The rate is measured by both the decay of the L2 norm and that of the (relative) entropy. With the convergence result, we also prove two Talagrand-type inequalities relating relative entropy and Wasserstein metric, based on two different metrics introduced in [7]. The first one is a local inequality, while the second is a global inequality with respect to the "lower bound metric" from [7].

  17. Foreign direct investment and trade in health services: a review of the literature.

    Science.gov (United States)

    Smith, Richard D

    2004-12-01

    Globalization is a key challenge facing health policy-makers. A significant aspect of this is direct trade in health services, a result of the rise of transnational corporations, challenges in health care financing, porous borders and improved technology creating the scope for increased 'foreign direct investment' (FDI) in health care. This has gathered momentum with the General Agreement on Trade in Services (GATS), which aims to further liberalize trade in services, and within which FDI has been noted as perhaps the most critical area for trade negotiation. Given the rapid development of this area, there are little empirical data. This paper therefore seeks to provide the first comprehensive and systematic review of evidence concerning FDI and health services. This process included electronic bibliographic database searches, website searches and correspondence with experts in the area of trade in health services, from which 76 papers, books and reports were reviewed. Perhaps due to the rapid developments in this area, most of the literature is speculative, polarized between those arguing for the benefits of liberalization and those arguing against. However, there seem to be three issues which emerge as of most importance: (i) the extent to which a national health system is commercialized per se is of more significance than whether investment in it is foreign or domestic; (ii) the national regulatory environment and its 'strength' will significantly determine the economic and health impact of FDI, the effectiveness of safeguard measures, and the stability of GATS commitments; and (iii) any negotiations will depend upon parties having a common understanding of what is being negotiated, and the interpretation of key definitions is thus critical. Each of these issues is explored in some depth, with the overall conclusion that countries should take a step back and first think through the risks and benefits of commercialization of their health sector, rather than being

  18. The acceptability to patients of PhysioDirect telephone assessment and advice services; a qualitative interview study.

    Science.gov (United States)

    Pearson, Jennifer; Richardson, Jane; Calnan, Michael; Salisbury, Chris; Foster, Nadine E

    2016-03-28

    In response to long waiting lists and problems with access to primary care physiotherapy, several Primary Care Trusts (PCTs) (now Clinical Commissioning Groups CCGs) developed physiotherapy-led telephone assessment and treatment services. The Medical Research Council (MRC) funded PhysioDirect trial was a randomised control trial (RCT) in four PCTs, with a total of 2252 patients that compared this approach with usual physiotherapy care. This nested qualitative study aimed to explore the acceptability of the PhysioDirect telephone assessment and advice service to patients with musculoskeletal conditions. We conducted 57 semi-structured interviews with adults from 4 PCTs who were referred from general practice to physiotherapy with musculoskeletal conditions and were participating in the PhysioDirect trial. The Framework method was used to analyse the qualitative data. The PhysioDirect service was largely viewed as acceptable although some saw it as a first step to subsequent face-to-face physiotherapy. Most participants found accessing the PhysioDirect service straightforward and smooth, and they valued the faster access to physiotherapy advice offered by the telephone service. Participants generally viewed both the PhysioDirect service and the physiotherapists providing the service as helpful. Participants' preferences and priorities for treatment defined the acceptable features of PhysioDirect but the acceptable features were traded off against less acceptable features. Some participants felt that the PhysioDirect service was impersonal and impaired the development of a good relationship with their physiotherapist, which made the service feel remote and less valuable. The PhysioDirect service was broadly acceptable to participants since it provided faster access to physiotherapy advice for their musculoskeletal conditions. Participants felt that it is best placed as one method of accessing physiotherapy services, in addition to, rather than as a replacement for

  19. Workforce Development Innovations with Direct Care Workers: Better Jobs, Better Services, Better Business.

    Science.gov (United States)

    Dailey, Wayne F; Morris, John A; Hoge, Michael A

    2015-08-01

    This study describes findings from a national search to identify innovative workforce practices designed to improve the lives of direct care workers serving individuals with mental health and substance use conditions, while simultaneously improving client care, and the business vitality of the employer. The search process, conducted by The Annapolis Coalition on the Behavioral Health Workforce, resulted in the selection of five programs to receive the Pacesetter Award from among 51 nominations received. Awardees understood the value of investing in direct care workers, who constitute an essential, but often overlooked, group within the behavioral health workforce. A review of these innovations yielded six cross-cutting principles that should inform future workforce efforts (a) supporting educational and career development (b) increasing wages and benefits (c) creating workforce development partnerships (d) using evidence-based practices to train staff and assess service fidelity (e) strengthening supervision and (f) employing people in recovery in direct care roles.

  20. Simulating transient dynamics of the time-dependent time fractional Fokker-Planck systems

    Science.gov (United States)

    Kang, Yan-Mei

    2016-09-01

    For a physically realistic type of time-dependent time fractional Fokker-Planck (FP) equation, derived as the continuous limit of the continuous time random walk with time-modulated Boltzmann jumping weight, a semi-analytic iteration scheme based on the truncated (generalized) Fourier series is presented to simulate the resultant transient dynamics when the external time modulation is a piece-wise constant signal. At first, the iteration scheme is demonstrated with a simple time-dependent time fractional FP equation on finite interval with two absorbing boundaries, and then it is generalized to the more general time-dependent Smoluchowski-type time fractional Fokker-Planck equation. The numerical examples verify the efficiency and accuracy of the iteration method, and some novel dynamical phenomena including polarized motion orientations and periodic response death are discussed.

  1. Generalized quantum Fokker-Planck, diffusion and Smoluchowski equations with true probability distribution functions

    CERN Document Server

    Banik, S K; Ray, D S; Banik, Suman Kumar; Bag, Bidhan Chandra; Ray, Deb Shankar

    2002-01-01

    Traditionally, the quantum Brownian motion is described by Fokker-Planck or diffusion equations in terms of quasi-probability distribution functions, e.g., Wigner functions. These often become singular or negative in the full quantum regime. In this paper a simple approach to non-Markovian theory of quantum Brownian motion using {\\it true probability distribution functions} is presented. Based on an initial coherent state representation of the bath oscillators and an equilibrium canonical distribution of the quantum mechanical mean values of their co-ordinates and momenta we derive a generalized quantum Langevin equation in $c$-numbers and show that the latter is amenable to a theoretical analysis in terms of the classical theory of non-Markovian dynamics. The corresponding Fokker-Planck, diffusion and the Smoluchowski equations are the {\\it exact} quantum analogues of their classical counterparts. The present work is {\\it independent} of path integral techniques. The theory as developed here is a natural ext...

  2. FOKKER-PLANCK ANALYSIS OF TRANSVERSE COLLECTIVE INSTABILITIES IN ELECTRON STORAGE RINGS

    Energy Technology Data Exchange (ETDEWEB)

    Lindberg, R. R.

    2017-06-25

    We analyze single bunch transverse instabilities due to wakefields using a Fokker-Planck model. We expand on the work of Suzuki [1], writing out the linear matrix equation including chromaticity, both dipolar and quadrupolar transverse wakefields, and the effects of damping and diffusion due to the synchrotron radiation. The eigenvalues and eigenvectors determine the collective stability of the beam, and we show that the predicted threshold current for transverse instability and the profile of the unstable agree well with tracking simulations. In particular, we find that predicting collective stability for high energy electron beams at moderate to large values of chromaticity requires the full Fokker-Planck analysis to properly account for the effects of damping and diffusion due to synchrotron radiation.

  3. Fokker-Planck quantum master equation for mixed quantum-semiclassical dynamics.

    Science.gov (United States)

    Ding, Jin-Jin; Wang, Yao; Zhang, Hou-Dao; Xu, Rui-Xue; Zheng, Xiao; Yan, YiJing

    2017-01-14

    We revisit Caldeira-Leggett's quantum master equation representing mixed quantum-classical theory, but with limited applications. Proposed is a Fokker-Planck quantum master equation theory, with a generic bi-exponential correlation function description on semiclassical Brownian oscillators' environments. The new theory has caustic terms that bridge between the quantum description on primary systems and the semiclassical or quasi-classical description on environments. Various parametrization schemes, both analytical and numerical, for the generic bi-exponential environment bath correlation functions are proposed and scrutinized. The Fokker-Planck quantum master equation theory is of the same numerical cost as the original Caldeira-Leggett's approach but acquires a significantly broadened validity and accuracy range, as illustrated against the exact dynamics on model systems in quantum Brownian oscillators' environments, at moderately low temperatures.

  4. Invalidity of the spectral Fokker-Planck equation forCauchy noise driven Langevin equation

    DEFF Research Database (Denmark)

    Ditlevsen, Ove Dalager

    2004-01-01

    The standard Langevin equation is a first order stochastic differential equation where the driving noise term is a Brownian motion. The marginal probability density is a solution to a linear partial differential equation called the Fokker-Planck equation. If the Brownian motion is replaced by so...... to a corresponding Langevin difference equation. Similar doubt can be traced in Grigoriu's work [Stochastic Calculus(2002)].......-called alpha-stable noise (or Levy noise) the Fokker-Planck equation no longer exists as a partial differential equation for the probability density because the property of finite variance is lost. In stead it has been attempted to formulate an equation for the characteristic function (the Fourier transform...

  5. How to solve Fokker-Planck equation treating mixed eigenvalue spectrum?

    Directory of Open Access Journals (Sweden)

    M. Brics

    2013-03-01

    Full Text Available An analogy of the Fokker-Planck equation (FPE with the Schrödinger equation allows us to use quantum mechanics technique to find the analytical solution of the FPE in a number of cases. However, previous studies have been limited to the Schrodinger potential with discrete eigenvalue spectrum. Here we will show how this approach can be applied also for mixed eigenvalue spectrum with bounded and free states. We solve the FPE with boundaries located at x=±L/2 and take the limit L→∞, considering examples with constant Schrödinger potential and with Pöschl-Teller potential. An oversimplified approach has been earlier proposed by M.T. Araujo and E. Drigo Filho. A detailed investigation of the two examples shows that the correct solution, obtained in this paper, is consistent with the expected Fokker-Planck dynamics.

  6. Use and Abuse of a Fractional Fokker-Planck Dynamics for Time-Dependent Driving

    Science.gov (United States)

    Heinsalu, E.; Patriarca, M.; Goychuk, I.; Hänggi, P.

    2007-09-01

    We investigate a subdiffusive, fractional Fokker-Planck dynamics occurring in time-varying potential landscapes and thereby disclose the failure of the fractional Fokker-Planck equation (FFPE) in its commonly used form when generalized in an ad hoc manner to time-dependent forces. A modified FFPE (MFFPE) is rigorously derived, being valid for a family of dichotomously alternating force fields. This MFFPE is numerically validated for a rectangular time-dependent force with zero average bias. For this case, subdiffusion is shown to become enhanced as compared to the force free case. We question, however, the existence of any physically valid FFPE for arbitrary varying time-dependent fields that differ from this dichotomous varying family.

  7. Fokker-Planck analysis of transverse collective instabilities in electron storage rings

    Science.gov (United States)

    Lindberg, Ryan R.

    2016-12-01

    We analyze single bunch transverse instabilities due to wakefields using a Fokker-Planck model. We first expand on the work of T. Suzuki, Part. Accel. 12, 237 (1982) to derive the theoretical model including chromaticity, both dipolar and quadrupolar transverse wakefields, and the effects of damping and diffusion due to the synchrotron radiation. We reduce the problem to a linear matrix equation, whose eigenvalues and eigenvectors determine the collective stability of the beam. We then show that various predictions of the theory agree quite well with results from particle tracking simulations, including the threshold current for transverse instability and the profile of the unstable mode. In particular, we find that predicting collective stability for high energy electron beams at moderate to large values of chromaticity requires the full Fokker-Planck analysis to properly account for the effects of damping and diffusion due to synchrotron radiation.

  8. State-space-split method for some generalized Fokker-Planck-Kolmogorov equations in high dimensions.

    Science.gov (United States)

    Er, Guo-Kang; Iu, Vai Pan

    2012-06-01

    The state-space-split method for solving the Fokker-Planck-Kolmogorov equations in high dimensions is extended to solving the generalized Fokker-Planck-Kolmogorov equations in high dimensions for stochastic dynamical systems with a polynomial type of nonlinearity and excited by Poissonian white noise. The probabilistic solution of the motion of the stretched Euler-Bernoulli beam with cubic nonlinearity and excited by uniformly distributed Poissonian white noise is analyzed with the presented solution procedure. The numerical analysis shows that the results obtained with the state-space-split method together with the exponential polynomial closure method are close to those obtained with the Monte Carlo simulation when the relative value of the basic system relaxation time and the mean arrival time of the Poissonian impulse is in some limited range.

  9. Self-Service and E-Education: The Relationship to Self-Directed Learning

    Science.gov (United States)

    Wells, Marilyn A.; Brook, Phillip W. J.

    Self-service via the Internet is becoming a common method of selling goods or services as customers have access to retailers’ websites whenever the “need” takes them. Higher education institutions are increasingly offering e-education which means that traditional teaching methods need modifying. Traditional teaching often consists of presenting and expanding upon material found in a prescribed text and delivering this content in lecture, seminar or workshop mode. Studies have confirmed that students learn more effectively when they can discuss the material with others and treat learning as a collaborative process. This chapter reports a case study, where students were required to decide on their level of involvement, discuss and propose the criteria for assessment evaluation, share ideas, concepts and understanding amongst themselves: in effect, self-directed learning. The learning environment used computer-mediated tools, such as discussion forums and chat rooms, and the case study assesses both the expectations of the teaching staff and the experiences of the students, and relates the outcomes to self-directed learning in a self-service environment.

  10. A unified approach for the solution of the Fokker-Planck equation

    OpenAIRE

    2000-01-01

    This paper explores the use of a discrete singular convolution algorithm as a unified approach for numerical integration of the Fokker-Planck equation. The unified features of the discrete singular convolution algorithm are discussed. It is demonstrated that different implementations of the present algorithm, such as global, local, Galerkin, collocation, and finite difference, can be deduced from a single starting point. Three benchmark stochastic systems, the repulsive Wong process, the Blac...

  11. Symmetries of the One-Dimensional Fokker-Planck-Kolmogorov Equation with a Nonlocal Quadratic Nonlinearity

    Science.gov (United States)

    Levchenko, E. A.; Trifonov, A. Yu.; Shapovalov, A. V.

    2017-06-01

    The one-dimensional Fokker-Planck-Kolmogorov equation with a special type of nonlocal quadratic nonlinearity is represented as a consistent system of differential equations, including a dynamical system describing the evolution of the moments of the unknown function. Lie symmetries are found for the consistent system using methods of classical group analysis. An example of an invariant-group solution obtained with an additional integral constraint imposed on the system is considered.

  12. Numerical analysis of the Fokker-Planck equation with adiabatic focusing: Realistic pitch-angle scattering

    Science.gov (United States)

    Lasuik, J.; Fiege, J. D.; Shalchi, A.

    2017-01-01

    We solve the focused transport equation of cosmic rays numerically to investigate non-isotropic models of the pitch-angle scattering coefficient. In previous work, the Fokker-Planck equation was solved either analytically by using approximations, or by using a numerical approach together with simple models for the pitch-angle scattering coefficient. It is the purpose of the current article so compute particle distribution functions as well as the parallel diffusion coefficient by solving numerically the focused transport equation for a more realistic Fokker-Planck coefficient of pitch-angle scattering. Our analytical form for the scattering parameter is based on non-linear diffusion theory that takes into account realistic scattering at pitch-angles close to 90 ° . This general form contains the isotropic form as well as the quasi-linear limit as special cases. We show that the ratio of the diffusion coefficients with and without focusing sensitively depends on the ratio of the turbulent magnetic field and the mean field. The assumed form of the pitch-angle Fokker-Planck coefficient has an influence on the parallel diffusion coefficient. In all considered cases we found a reduction of the ratio of the diffusion coefficients if the ratio of magnetic fields is reduced.

  13. Are Direct Payments for Environmental Services Spelling Doom for Sustainable Forest Management in the Tropics?

    Directory of Open Access Journals (Sweden)

    Sven Wunder

    2006-12-01

    Full Text Available Over the past several decades, significant donor funding has been directed to sustainable forest management in the tropics, in the hope of combining forest conservation with economic gains through sustainable use. To date, this approach has produced only modest results in terms of changed silvicultural and land-use practices in this area. Direct payments for environmental services (PES have been suggested as a promising alternative but still remain widely untested in the tropics. This paper first provides a conceptual assessment of PES, comparing the main features of this practice with those of other conservation instruments. Second, the paper discusses a series of critical questions that have been raised about both the environmental and livelihood impacts of PES. It is concluded that some ex ante judgments about the effects of PES may have been overly critical, and that, based on preliminary assessments, there is good reason to continue experimental PES implementation for purposes of consolidating our knowledge.

  14. Self-directed community services for older Australians: a stepped capacity-building approach.

    Science.gov (United States)

    Ottmann, Goetz; Mohebbi, Mohammedreza

    2014-11-01

    Consumer-directed care (CDC) is increasingly widespread among aged care service options in Organisation for Economic Co-operation and Development (OECD) countries. However, the evidence base regarding the programmatic and contextual factors that affect the outcome of CDC interventions is surprisingly small. This paper reports on a self-directed care approach for older Australians with complex care needs. A multi-methods longitudinal comparative cohort study was employed comprising 4 survey tools and 56 semi-structured interviews. Participation rates were around 20%. A total of 185 (98 in the intervention and 87 in the control group) older people and carers were recruited at baseline. Eleven months later, 109 participants (59 in the intervention and 50 in the control group) completed the repeat measure. Attrition rates were around 40%. Data collection occurred between July 2010 and April 2012. The data suggest that intervention group participants were likely to be more satisfied with the way they were treated (P = 0.013), their care options (P = 0.014), the 'say' they had in their care (P < 0.001), the information they received regarding their care (P = 0.012), what they were achieving in life (P = 0.031), that the services changed their view on what could be achieved in life (P = 0.020) and with their standard of living (P = 0.008). The evaluation suggests that while only a very small segment of older people is interested in a voucher or cash option, a substantially larger group would like to have greater say over and more direct access to their care, without, however, assuming administrative and financial responsibilities. The paper concludes that a stepped capacity-building approach to CDC may improve the acceptability of CDC to older people and generate synergies that improve older people's care outcomes. © 2014 John Wiley & Sons Ltd.

  15. Numerical Resolution of N-dimensional Fokker-Planck stochastic equations; Resolucion Numerica de Ecuaciones Estocasticas de tipo Fokker-Planck en Varias Dimensiones

    Energy Technology Data Exchange (ETDEWEB)

    Garcia-Olivares, R. A.; Munoz Roldan, A.

    1992-07-01

    This document describes the use of a library of programs able to solve stochastic Fokker-Planck equations in a N-dimensional space. The input data are essentially: (i) the initial distribution of the stochastic variable, (ii) the drift and fluctuation coefficients as a function of the state (which can be obtained from the transition probabilities between neighboring states) and (iii) some parameters controlling the run. A last version of the library accepts sources and sinks defined in the states space. The output is the temporal evolution of the probability distribution in the space defined by a N-dimensional grid. Some applications and readings in Synergetic, Self-Organization, transport phenomena, Ecology and other fields are suggested. If the probability distribution is interpreted as a distribution of particles then the codes can be used to solve the N-dimensional problem of advection-diffusion. (Author) 16 refs.

  16. Consumer-Directed Goal Planning in the Delivery of Assistive Technology Services for People Who Are Ageing with Intellectual Disabilities

    Science.gov (United States)

    Mirza, Mansha; Hammel, Joy

    2009-01-01

    Background: A consumer-directed service-delivery approach to assistive technology and environmental modification intervention was examined with people who were ageing with intellectual disabilities. Material and Methods: The intervention was based on a collaborative approach involving consumers, their social supports and service deliverers. Thirty…

  17. 45 CFR 1357.40 - Direct payments to Indian Tribal Organizations (title IV-B, subpart 1, child welfare services).

    Science.gov (United States)

    2010-10-01

    ... 45 Public Welfare 4 2010-10-01 2010-10-01 false Direct payments to Indian Tribal Organizations (title IV-B, subpart 1, child welfare services). 1357.40 Section 1357.40 Public Welfare Regulations Relating to Public Welfare (Continued) OFFICE OF HUMAN DEVELOPMENT SERVICES, DEPARTMENT OF HEALTH AND...

  18. Solution of the Boltzmann-Fokker-Planck transport equation using exponential nodal schemes; Solucion de la ecuacion de transporte de Boltzmann-Fokker-Planck usando esquemas nodales exponenciales

    Energy Technology Data Exchange (ETDEWEB)

    Ortega J, R.; Valle G, E. del [IPN-ESFM, 07738 Mexico D.F. (Mexico)]. e-mail: roj@correo.azc.uam.mx

    2003-07-01

    There are carried out charge and energy calculations deposited due to the interaction of electrons with a plate of a certain material, solving numerically the electron transport equation for the Boltzmann-Fokker-Planck approach of first order in plate geometry with a computer program denominated TEOD-NodExp (Transport of Electrons in Discreet Ordinates, Nodal Exponentials), using the proposed method by the Dr. J. E. Morel to carry out the discretization of the variable energy and several spatial discretization schemes, denominated exponentials nodal. It is used the Fokker-Planck equation since it represents an approach of the Boltzmann transport equation that is been worth whenever it is predominant the dispersion of small angles, that is to say, resulting dispersion in small dispersion angles and small losses of energy in the transport of charged particles. Such electrons could be those that they face with a braking plate in a device of thermonuclear fusion. In the present work its are considered electrons of 1 MeV that impact isotropically on an aluminum plate. They were considered three different thickness of plate that its were designated as problems 1, 2 and 3. In the calculations it was used the discrete ordinate method S{sub 4} with expansions of the dispersion cross sections until P{sub 3} order. They were considered 25 energy groups of uniform size between the minimum energy of 0.1 MeV and the maximum of 1.0 MeV; the one spatial intervals number it was considered variable and it was assigned the values of 10, 20 and 30. (Author)

  19. Stuttering Intervention in Three Service Delivery Models (Direct, Hybrid, and Telepractice: Two Case Studies

    Directory of Open Access Journals (Sweden)

    Daniel T. Valentine

    2015-01-01

    Full Text Available This study assessed outcomes in stuttering intervention across three service delivery models: direct, hybrid, and telepractice for two 11-year old children who stutter. The goal of the study was to investigate whether short-term goals were maintained through the telepractice sessions. The Stuttering Severity Instrument, Fourth Edition (SSI-4 was administered to each child before and after each intervention period and weekly fluency samples (percentage of stuttered syllables in a monologue were obtained in each of the 10-week intervention periods. In addition, the Communication Attitudes Test-Revised was used to assess the children’s attitudes toward speaking. Following the telepractice period, parents and children completed a questionnaire concerning the therapy experience via telepractice. Both children continued to improve fluency as measured by the weekly fluency samples. SSI-4 severity ratings improved for one child and remained consistent for the other. These outcomes appear to demonstrate that telepractice is viable for improving and maintaining fluency.

  20. Development of Self Directed Learning Skills Scale for Pre-Service Science Teachers

    Directory of Open Access Journals (Sweden)

    Canan ACAR

    2015-07-01

    Full Text Available The aim of this study is to develop a valid and reliable instrument which is enable to assess pre-service teachers’ self-directed learning skills. 140 students included in this study for validity and reliability. Exploratory and confirmatory factor analyses were adopted, and item analysis was used. Cronbach’s alpha reliability coefficient was calculated. At the end of study, a scale with 25 items (α=0.85, explains 56.997% of the total variance, was developed. Confirmatory Factor analysis indicated that four items do not related to the overall items and they removed from the scale and scale was finalized with 21 items.  According to the result of factor analysis of scale, two factors were determined. These factors was named as “self-efficacy” (10 items, α=0.74, and “awareness” (11 items; α=0.84. 

  1. One Country, Two Polarised Audiences: Estonia and the Deficiency of the Audiovisual Media Services Directive

    Directory of Open Access Journals (Sweden)

    Andres Jõesaar

    2015-12-01

    Full Text Available This article argues that until recent times, the Estonian media policy has mainly been interpreted as an economic issue and it did not account for the strategic need to build a comprehensive media field to serve all groups in society. This has happened despite the fact the Estonian media policy is in line with the European Union (EU media policy, which should ensure freedom of information, diversity of opinion and media pluralism. Findings of the Estonian case study show that despite these noble aims, Estonia has two radically different information fields: one for Estonian speaking audiences and one for Russian speakers. Events in Ukraine have added to the democratic media policy paradigm a question of national security. Now it is a challenge for the policy makers to unite polarised media fields and how to minimise the impact of Russian propaganda. On the EU level, one supportive measure could be a revision of the Audiovisual Media Service Directive.

  2. Applicability of the Fokker-Planck equation to the description of diffusion effects on nucleation

    Science.gov (United States)

    Sorokin, M. V.; Dubinko, V. I.; Borodin, V. A.

    2017-01-01

    The nucleation of islands in a supersaturated solution of surface adatoms is considered taking into account the possibility of diffusion profile formation in the island vicinity. It is shown that the treatment of diffusion-controlled cluster growth in terms of the Fokker-Planck equation is justified only provided certain restrictions are satisfied. First of all, the standard requirement that diffusion profiles of adatoms quickly adjust themselves to the actual island sizes (adiabatic principle) can be realized only for sufficiently high island concentration. The adiabatic principle is essential for the probabilities of adatom attachment to and detachment from island edges to be independent of the adatom diffusion profile establishment kinetics, justifying the island nucleation treatment as the Markovian stochastic process. Second, it is shown that the commonly used definition of the "diffusion" coefficient in the Fokker-Planck equation in terms of adatom attachment and detachment rates is justified only provided the attachment and detachment are statistically independent, which is generally not the case for the diffusion-limited growth of islands. We suggest a particular way to define the attachment and detachment rates that allows us to satisfy this requirement as well. When applied to the problem of surface island nucleation, our treatment predicts the steady-state nucleation barrier, which coincides with the conventional thermodynamic expression, even though no thermodynamic equilibrium is assumed and the adatom diffusion is treated explicitly. The effect of adatom diffusional profiles on the nucleation rate preexponential factor is also discussed. Monte Carlo simulation is employed to analyze the applicability domain of the Fokker-Planck equation and the diffusion effect beyond it. It is demonstrated that a diffusional cloud is slowing down the nucleation process for a given monomer interaction with the nucleus edge.

  3. Aimulet: a multilingual spatial optical voice card terminal for location and direction based information services

    Science.gov (United States)

    Itoh, Hideo; Lin, Xin; Kaji, Ryosaku; Niwa, Tatsuya; Nakamura, Yoshiyuki; Nishimura, Takuichi

    2006-01-01

    The National Institute of Advanced Industrial Science and Technology (AIST) in Japan has been developing Aimulet, which is a compact low-power consuming information terminal for a personal information services. Conventional Aimulet, which is called Aimulet ver. 1 or CoBIT, has features of location and direction sensitive information service device without batteries. On the other hand, the Aimulet ver. 1 has two subjects, one is multiplex and demultiplex of some contents, and another is operation under sunshine. In Former subject is of solved by the wavelength multiplex technique using LED emitter with different wavelength and dielectric optical filters. Latter subject is solved by new micro spherical solar cells with a visible-light-eliminating optical filter and a new design of light irradiation. These techniques are applied to the EXPO 2005, Aichi Japan and introduced in public. The former technique is applied on Aimulet GH, which is used in Orange Hall of the Global House, scientific museum with a fossil of a frozen mammoth. The latter technique is applied on Aimulet LA, which is used in the Laurie Anderson's WALK project in the Japanese Garden.

  4. Efficient positive, conservative, Maxwellian preserving and implicit difference schemes for the 1-D isotropic Fokker-Planck-Landau equation; Schemas positifs, implicites, conservant l'energie et les etats d'equilibre pour l'equation de Fokker-Planck-Landau isotrope

    Energy Technology Data Exchange (ETDEWEB)

    Buet, Ch. [CEA Bruyeres-le-Chatel, Dept. Sciences de la Simulation et de l' Information, Service Numerique Environnement et Constantes, 91 (France); Le Thanh, K.C. [CEA Bruyeres-le-Chatel, Service Physique des Plasmas et Electromagnetisme, 91 (France). Dept. de Physique Theorique et Appliquee

    2008-07-01

    The aim of this paper is to describe the discretization of the Fokker-Planck-Landau (FPL) collision term in the isotropic case, which models the self-collision for the electrons when they are totally isotropized by heavy particles background such as ions. The discussion focuses on schemes, which could preserve positivity, mass, energy and Maxwellian equilibrium. The Chang and Cooper method is widely used by plasma's physicists for the FPL equation (and for Fokker-Planck type equations). We present a new variant that is both positive and conservative contrary to the existing one's. We propose also a non Chang and Cooper 'type scheme on non-uniform grid, which is also both positive, conservative and equilibrium state preserving contrary to existing one's. The case of Coulombian potential is emphasized. We address also the problem of the time discretization. In particular we show how to recast some implicit methods to get band diagonal system and to solve it by direct method with a linear cost. (authors)

  5. New velocity-space discretization for continuum kinetic calculations and Fokker-Planck collisions

    CERN Document Server

    Landreman, Matt

    2012-01-01

    Numerical techniques are described for discretization of velocity spacevin continuum kinetic calculations. An efficient spectral collocation method is developed for the speed coordinate - the radius in velocity space - employing a novel set of non-classical orthogonal polynomials. For problems in which Fokker-Planck collisions are included, a common situation in plasma physics, a procedure is detailed to accurately and efficiently treat the field term in the collision operator. When species with disparate masses are included simultaneously, a careful extrapolation of the Rosenbluth potentials is performed. The techniques are demonstrated in neoclassical calculations of the bootstrap current and plasma flows in a tokamak.

  6. Multivalued fundamental diagrams of traffic flow in the kinetic Fokker-Planck limit

    CERN Document Server

    Visconti, Giuseppe; Puppo, Gabriella; Tosin, Andrea

    2016-01-01

    Starting from interaction rules based on two levels of stochasticity we study the influence of the microscopic dynamics on the macroscopic properties of vehicular flow. In particular, we study the qualitative structure of the resulting flux-density and speed-density diagrams for different choices of the desired speeds. We are able to recover multivalued diagrams as a result of the existence of a one-parameter family of stationary distributions, whose expression is analytically found by means of a Fokker-Planck approximation of the initial Boltzmann-type model.

  7. Fokker-Planck solutions for action diffusion in a noisy symplectic map

    Energy Technology Data Exchange (ETDEWEB)

    Bazzani, A.; Beccaceci, L.; Bigliardi, L.; Turchetti, G. [Dipartimento di Fisica, Via Irnerio 46, 40126 Bologna (Italy) INFN, Sezione di Bologna

    1997-02-01

    We investigate the statistical properties of symplectic maps with noise, describing a FODO cell with a sextupole and current ripples or misalignments in the magnets. Up to some distance from the dynamic aperture, the normal form associated to the map allows to compute analytically the diffusion coefficient due to a stochastic perturbation. The action diffusion is examined and very good agreement between the solutions of the Fokker-Planck (F.P.) equation and the simulations is obtained, for the H{acute e}non and SPS maps with a white noise. The corrections appearing for a correlated noise are discussed. {copyright} {ital 1997 American Institute of Physics.}

  8. Forecasting with the Fokker-Planck model: Bayesian setting of parameter

    Science.gov (United States)

    Montagnon, Chris

    2017-04-01

    Using a closed solution to a Fokker-Planck model of a time series, a probability distribution for the next point in the time series is developed. This probability distribution has one free parameter. Various Bayesian approaches to setting this parameter are tested by forecasting some real world time series. Results show a more than 25 % reduction in the ' 95 % point' of the probability distribution (the safety stock required in these real world situations), versus the conventional ARMA approach, without a significant increase in actuals exceeding this level.

  9. Generalized Keller-Segel models of chemotaxis. Analogy with nonlinear mean field Fokker-Planck equations

    CERN Document Server

    Chavanis, Pierre-Henri

    2008-01-01

    We consider a generalized class of Keller-Segel models describing the chemotaxis of biological populations (bacteria, amoebae, endothelial cells, social insects,...). We show the analogy with nonlinear mean field Fokker-Planck equations and generalized thermodynamics. As an illustration, we introduce a new model of chemotaxis incorporating both effects of anomalous diffusion and exclusion principle (volume filling). We also discuss the analogy between biological populations described by the Keller-Segel model and self-gravitating Brownian particles described by the Smoluchowski-Poisson system.

  10. Métodos numéricos integrales para ecuaciones Fokker-Planck

    OpenAIRE

    Donoso Vargas, José Manuel

    2011-01-01

    El trabajo presenta un método numérico de resolucion para ecuaciones de fokker-planck no lineales. El modelo mejora el tratamiento de problemas cinéticos con mas de una cantidad conservada, subsanando las deficiencias que, en este sentido, presentan los esquemas habituales en diferencias. El método se basa en la ecuación integral de evolución para la distribución a través de la probabilidad de transición o propagador. En el segundo capitulo se propone un sencillo algoritmo para la obtención d...

  11. Some exact solutions for a unidimensional fokker-planck equation by using lie symmetries

    Directory of Open Access Journals (Sweden)

    Hugo Hernán Ortíz-Álvarez

    2015-01-01

    Full Text Available The Fokker Planck equation appears in the study of diffusion phenomena, stochastics processes and quantum and classical mechanics. A particular case fromthis equation, ut − uxx − xux − u=0, is examined by the Lie group method approach. From the invariant condition it was possible to obtain the infinitesimal generators or vectors associated to this equation, identifying the corresponding symmetry groups. Exact solution were found for each one of this generators and new solution were constructed by using symmetry properties.

  12. Fokker-Planck description for the queue dynamics of large tick stocks

    Science.gov (United States)

    Garèche, A.; Disdier, G.; Kockelkoren, J.; Bouchaud, J.-P.

    2013-09-01

    Motivated by empirical data, we develop a statistical description of the queue dynamics for large tick assets based on a two-dimensional Fokker-Planck (diffusion) equation. Our description explicitly includes state dependence, i.e., the fact that the drift and diffusion depend on the volume present on both sides of the spread. “Jump” events, corresponding to sudden changes of the best limit price, must also be included as birth-death terms in the Fokker-Planck equation. All quantities involved in the equation can be calibrated using high-frequency data on the best quotes. One of our central findings is that the dynamical process is approximately scale invariant, i.e., the only relevant variable is the ratio of the current volume in the queue to its average value. While the latter shows intraday seasonalities and strong variability across stocks and time periods, the dynamics of the rescaled volumes is universal. In terms of rescaled volumes, we found that the drift has a complex two-dimensional structure, which is a sum of a gradient contribution and a rotational contribution, both stable across stocks and time. This drift term is entirely responsible for the dynamical correlations between the ask queue and the bid queue.

  13. Perturbative expansion of irreversible work in Fokker-Planck equation à la quantum mechanics

    Science.gov (United States)

    Koide, T.

    2017-08-01

    We discuss the systematic expansion of the solution of the Fokker-Planck equation with the help of the eigenfunctions of the time-dependent Fokker-Planck operator. The expansion parameter is the time derivative of the external parameter which controls the form of an external potential. Our expansion corresponds to the perturbative calculation of the adiabatic motion in quantum mechanics. With this method, we derive a new formula to calculate the irreversible work order by order, which is expressed as the expectation value with a pseudo density matrix. Applying this method to the case of the harmonic potential, we show that the first order term of the expansion gives the exact result. Because we do not need to solve the coupled differential equations of moments, our method simplifies the calculations of various functions such as the fluctuation of the irreversible work per unit time. We further investigate the exact optimized protocol to minimize the irreversible work by calculating its variation with respect to the control parameter itself.

  14. An efficient iterative method for solving the Fokker-Planck equation

    Science.gov (United States)

    AL-Jawary, M. A.

    In the present paper, the new iterative method proposed by Daftardar-Gejji and Jafari (NIM or DJM) (2006) is used to solve the linear and nonlinear Fokker-Planck equations and some similar equations. In this iterative method the solution is obtained in the series form that converge to the exact solution with easily computed components. The results demonstrate that the method has many merits such as being derivative-free, overcome the difficulty arising in calculating Adomian polynomials to handle the nonlinear terms in Adomian decomposition method (ADM). It does not require to calculate Lagrange multiplier as in variational iteration method (VIM) and for solving a nonlinear case, the terms of the sequence become complex after several iterations. Thus, analytical evaluation of terms becomes very difficult or impossible in VIM. No needs to construct a homotopy and solve the corresponding algebraic equations as in homotopy perturbation method (HPM). In this work, the applications of the DJM for 1D, 2D, 3D linear and nonlinear Fokker-Planck equations are given and the results demonstrate that the presented method is very effective and reliable and does not require any restrictive assumptions for nonlinear terms and provide the analytic solutions. A symbolic manipulator Mathematica® 10.0 was used to evaluate terms in the iterative process.

  15. Robust identification of harmonic oscillator parameters using the adjoint Fokker-Planck equation

    Science.gov (United States)

    Boujo, E.; Noiray, N.

    2017-04-01

    We present a model-based output-only method for identifying from time series the parameters governing the dynamics of stochastically forced oscillators. In this context, suitable models of the oscillator's damping and stiffness properties are postulated, guided by physical understanding of the oscillatory phenomena. The temporal dynamics and the probability density function of the oscillation amplitude are described by a Langevin equation and its associated Fokker-Planck equation, respectively. One method consists in fitting the postulated analytical drift and diffusion coefficients with their estimated values, obtained from data processing by taking the short-time limit of the first two transition moments. However, this limit estimation loses robustness in some situations-for instance when the data are band-pass filtered to isolate the spectral contents of the oscillatory phenomena of interest. In this paper, we use a robust alternative where the adjoint Fokker-Planck equation is solved to compute Kramers-Moyal coefficients exactly, and an iterative optimization yields the parameters that best fit the observed statistics simultaneously in a wide range of amplitudes and time scales. The method is illustrated with a stochastic Van der Pol oscillator serving as a prototypical model of thermoacoustic instabilities in practical combustors, where system identification is highly relevant to control.

  16. Stability analysis of implicit time discretizations for the Compton-scattering Fokker-Planck equation

    Energy Technology Data Exchange (ETDEWEB)

    Densmore, Jeffery D [Los Alamos National Laboratory; Warsa, James S [Los Alamos National Laboratory; Lowrie, Robert B [Los Alamos National Laboratory; Morel, Jim E [TEXAS A& M UNIV

    2008-01-01

    The Fokker-Planck equation is a widely used approximation for modeling the Compton scattering of photons in high energy density applications. In this paper, we perform a stability analysis of three implicit time discretizations for the Compton-Scattering Fokker-Planck equation. Specifically, we examine (i) a Semi-Implicit (SI) scheme that employs backward-Euler differencing but evaluates temperature-dependent coefficients at their beginning-of-time-step values, (ii) a Fully Implicit (FI) discretization that instead evaluates temperature-dependent coefficients at their end-of-time-step values, and (iii) a Linearized Implicit (LI) scheme, which is developed by linearizing the temperature dependence of the FI discretization within each time step. Our stability analysis shows that the FI and LI schemes are unconditionally stable and cannot generate oscillatory solutions regardless of time-step size, whereas the SI discretization can suffer from instabilities and nonphysical oscillations for sufficiently large time steps. With the results of this analysis, we present time-step limits for the SI scheme that prevent undesirable behavior. We test the validity of our stability analysis and time-step limits with a set of numerical examples.

  17. Fokker-Planck-Rosenbluth-Type Equations for Self-gravitating Systems in 1PN Approximation

    CERN Document Server

    Ramos-Caro, Javier

    2008-01-01

    We present two formulations of Fokker-Planck-Rosenbluth-type (FPR) equations for many-particle self-gravitating systems, with first order relativistic corrections in the post-Newtonian approach (1PN). The first starts from a covariant Fokker-Planck equation for a simple gas, introduced recently by G. Chacon-Acosta and G. Kremer (Phys. Rev. E 76, 021201, 2007). The second derivation is based on the establishment of an 1PN-BBGKY hierarchy, developed systematically from the 1PN microscopic law of force and using the Klimontovich-Dupree (KD) method. We close the hierarchy by the introduction of a two-point correlation function that describes adequately the relaxation process. This picture reveals an aspect that is not considered in the first formulation: the contribution of ternary correlation patterns to the diffusion coefficients, as a consequence of the nature of 1PN interaction. Both formulations can be considered as a generalization of the equation derived by Rezania and Sobouti (Astron. Astrophys. 54, 1110-...

  18. An Evaluation of a School Counselling Service with Direct Links to Child and Adolescent Mental Health (CAMH) Services

    Science.gov (United States)

    McKenzie, Karen; Murray, George C.; Prior, Seamus; Stark, Lynda

    2011-01-01

    An evaluation of a Scottish secondary school-based counselling service for students aged 11 to 18 is presented. Improvement in student emotional well-being was measured using the Young Persons Clinical Outcomes for Routine Evaluation (YP CORE) questionnaire and participant questionnaires which were developed for the study. Significant improvements…

  19. Fostering Sustainable Travel Behavior: Role of Sustainability Labels and Goal-Directed Behavior Regarding Touristic Services

    Directory of Open Access Journals (Sweden)

    Elfriede Penz

    2017-06-01

    Full Text Available Individuals around the globe engage in sustainable consumption in their everyday life, e.g., when it comes to individual transportation. Although tourism behavior contributes to global carbon emissions to a considerable extent, consumers’ awareness of sustainability in the tourism industry is still underresearched. Placing eco-labels next to tourist offers on websites might direct consumer’s perception towards more sustainable offers. By employing eye-tracking techniques and surveys, this research aimed at linking information about sustainable tourist offers, perception of eco-labels and subsequent perception and preferences of tourism services. In Study 1, eight existing hotel offers with sustainability certification (four different labels were selected and their websites presented to 48 participants (four websites each, whose eye movements were tracked. After looking at each website, they rated the overall appearance of the website. Based on the results, in the second study, participants’ (n = 642 awareness of labels, their values and attitudes regarding sustainable behavior were found to influence their preference for certified tour operators. In addition, individuals’ ideas of their perfect holidays were captured to allow a better understanding of their motivation. This research proposes implementing appropriate sustainable labeling in the tourism industry to increase awareness about sustainability among travelers and subsequently increase sustainable travel behavior.

  20. 'PhysioDirect' telephone assessment and advice services for physiotherapy: protocol for a pragmatic randomised controlled trial

    Directory of Open Access Journals (Sweden)

    Hopper Cherida

    2009-08-01

    Full Text Available Abstract Background Providing timely access to physiotherapy has long been a problem for the National Health Service in the United Kingdom. In an attempt to improve access some physiotherapy services have introduced a new treatment pathway known as PhysioDirect. Physiotherapists offer initial assessment and advice by telephone, supported by computerised algorithms, and patients are sent written self-management and exercise advice by post. They are invited for face-to-face treatment only when necessary. Although several such services have been developed, there is no robust evidence regarding clinical and cost-effectiveness, nor the acceptability of PhysioDirect. Methods/Design This protocol describes a multi-centre pragmatic individually randomised trial, with nested qualitative research. The aim is to determine the effectiveness, cost-effectiveness, and acceptability of PhysioDirect compared with usual models of physiotherapy based on patients going onto a waiting list and receiving face-to-face care. PhysioDirect services will be established in four areas in England. Adult patients in these areas with musculoskeletal problems who refer themselves or are referred by a primary care practitioner for physiotherapy will be invited to participate in the trial. About 1875 consenting patients will be randomised in a 2:1 ratio to PhysioDirect or usual care. Data about outcome measures will be collected at baseline and 6 weeks and 6 months after randomisation. The primary outcome is clinical improvement at 6 months; secondary outcomes include cost, waiting times, time lost from work and usual activities, patient satisfaction and preference. The impact of PhysioDirect on patients in different age-groups and with different conditions will also be examined. Incremental cost-effectiveness will be assessed in terms of quality adjusted life years in relation to cost. Qualitative methods will be used to explore factors associated with the success or failure of

  1. Green function of the double-fractional Fokker-Planck equation: path integral and stochastic differential equations.

    Science.gov (United States)

    Kleinert, H; Zatloukal, V

    2013-11-01

    The statistics of rare events, the so-called black-swan events, is governed by non-Gaussian distributions with heavy power-like tails. We calculate the Green functions of the associated Fokker-Planck equations and solve the related stochastic differential equations. We also discuss the subject in the framework of path integration.

  2. An analytical solution of the Fokker-Planck equation in the phase-locked loop transient analysis

    Science.gov (United States)

    Zhang, Weijian

    1987-01-01

    A probabilistic approach is used to obtain an analytical solution to the Fokker-Planck equation used in the transient analysis of the phase-locked loop phase error process of the first-order phase-locked loop. The solution procedure, which is based on the Girsanov transformation, is described.

  3. Low-energy expansion formula for one-dimensional Fokker-Planck and Schr\\"odinger equations with periodic potentials

    CERN Document Server

    Miyazawa, Toru

    2011-01-01

    We study the low-energy behavior of the Green function for one-dimensional Fokker-Planck and Schr\\"odinger equations with periodic potentials. We derive a formula for the power series expansion of reflection coefficients in terms of the wave number, and apply it to the low-energy expansion of the Green function.

  4. New multigroup Monte Carlo scattering algorithm suitable for neutral- and charged-particle Boltzmann and Fokker-Planck calculations

    Energy Technology Data Exchange (ETDEWEB)

    Sloan, D.P.

    1983-05-01

    Morel (1981) has developed multigroup Legendre cross sections suitable for input to standard discrete ordinates transport codes for performing charged-particle Fokker-Planck calculations in one-dimensional slab and spherical geometries. Since the Monte Carlo neutron transport code, MORSE, uses the same multigroup cross section data that discrete ordinates codes use, it was natural to consider whether Fokker-Planck calculations could be performed with MORSE. In order to extend the unique three-dimensional forward or adjoint capability of MORSE to Fokker-Planck calculations, the MORSE code was modified to correctly treat the delta-function scattering of the energy operator, and a new set of physically acceptable cross sections was derived to model the angular operator. Morel (1979) has also developed multigroup Legendre cross sections suitable for input to standard discrete ordinates codes for performing electron Boltzmann calculations. These electron cross sections may be treated in MORSE with the same methods developed to treat the Fokker-Planck cross sections. The large magnitude of the elastic scattering cross section, however, severely increases the computation or run time. It is well-known that approximate elastic cross sections are easily obtained by applying the extended transport (or delta function) correction to the Legendre coefficients of the exact cross section. An exact method for performing the extended transport cross section correction produces cross sections which are physically acceptable. Sample calculations using electron cross sections have demonstrated this new technique to be very effective in decreasing the large magnitude of the cross sections.

  5. Choice of Personal Assistance Services Providers by Medicare Beneficiaries Using a Consumer-Directed Benefit: Rural-Urban Differences

    Science.gov (United States)

    Meng, Hongdao; Friedman, Bruce; Wamsley, Brenda R.; Van Nostrand, Joan F.; Eggert, Gerald M.

    2010-01-01

    Purpose: To examine the impact of an experimental consumer-choice voucher benefit on the selection of independent and agency personal assistance services (PAS) providers among rural and urban Medicare beneficiaries with disabilities. Methods: The Medicare Primary and Consumer-Directed Care Demonstration enrolled 1,605 Medicare beneficiaries in 19…

  6. Using aspen for artist stretcher frames: adding value through quality service, direct marketing, and careful material selection

    Science.gov (United States)

    Chris. Polson

    2001-01-01

    Aspen wood, when carefully selected and kiln dried, makes excellent stock for artist stretcher frames. Direct marketing techniques including the Internet and word of mouth give access to national markets, providing a more diverse and stable customer base for operations from a rural area. High-quality service, as shown by product performance and rapid order fulfillment...

  7. Exempting mental health peer support services from copayments. Direct final rule.

    Science.gov (United States)

    2014-11-28

    The Department of Veterans Affairs (VA) is taking final action to amend its regulation that sets forth the VA services that are not subject to copayment requirements for inpatient hospital care or outpatient medical care. Specifically, the regulation is amended to exempt mental health peer support services from having any required copayment. This removes a barrier that may have previously discouraged veterans from choosing to use mental health peer support services as a viable care option. VA believes that mental health peer support services are a valuable resource for veterans with mental health conditions and wants to ensure that veterans take full advantage of all resources available to them.

  8. Evaluation of the Fokker-Planck probability by Asymptotic Taylor Expansion Method

    Science.gov (United States)

    Firat, Kenan; Ozer, Okan

    2017-02-01

    The one-dimensional Fokker-Planck equation is solved by the Asymptotic Taylor Expansion Method for the time-dependent probability density of a particle. Using an ansatz wave function, one obtains the series expansion of the solution for the Schrödinger and it allows one to find out the eigen functions and eigen energies of the states to the evaluation of the probability. The eigen energies of some certain kind of Bistable potentials are calculated for some certain potential parameters. The probability function is determined and graphed for potential parameters. The numerical results are compared with existing literature, and a conclusion about the advantages and disadvantages on the method is given.

  9. Fully Implicit Iterative Solving Method for the Fokker-Planck Equation in Tokamak Plasmas

    Institute of Scientific and Technical Information of China (English)

    ZHENG Pingwei; GONG Xueyu; YU Jun; DU Dan

    2014-01-01

    A three dimensional bounce-averaged Fokker-Planck (FP) numerical code has been newly developed based on fully implicit iterative solving method,and relativistic effect is also included in the code.The code has been tested against various benchmark cases:Ohmic conductivity in the presence of weak Ohmic electric field,runaway losses of electrons in the presence of strong Ohmic electric field,lower hybrid current drive and electron cyclotron current drive via two-or three-dimensional simulation.All the test cases run fast and correctly during calculations.As a result,the code provides a set of powerful tools for studying radio frequency wave heating and current drive in tokamak plasmas.

  10. A Fokker-Planck Model of the Boltzmann Equation with Correct Prandtl Number for Polyatomic Gases

    Science.gov (United States)

    Mathiaud, J.; Mieussens, L.

    2017-09-01

    We propose an extension of the Fokker-Planck model of the Boltzmann equation to get a correct Prandtl number in the Compressible Navier-Stokes asymptotics for polyatomic gases. This is obtained by replacing the diffusion coefficient (which is the equilibrium temperature) by a non diagonal temperature tensor, like the Ellipsoidal-Statistical model is obtained from the Bathnagar-Gross-Krook model of the Boltzmann equation, and by adding a diffusion term for the internal energy. Our model is proved to satisfy the properties of conservation and a H-theorem. A Chapman-Enskog analysis shows how to compute the transport coefficients of our model. Some numerical tests are performed to illustrate that a correct Prandtl number can be obtained.

  11. Feedback-induced Bistability of an Optically Levitated Nanoparticle: A Fokker-Planck Treatment

    CERN Document Server

    Ge, Wenchao; Bhattacharya, M

    2016-01-01

    Optically levitated nanoparticles have recently emerged as versatile platforms for investigating macroscopic quantum mechanics and enabling ultrasensitive metrology. In this article we theoretically consider two damping regimes of an optically levitated nanoparticle cooled by cavityless parametric feedback. Our treatment is based on a generalized Fokker-Planck equation derived from the quantum master equation presented recently and shown to agree very well with experiment [1]. For low damping, we find that the resulting Wigner function yields the single-peaked oscillator position distribution and recovers the appropriate energy distribution derived earlier using a classical theory and verified experimentally [2]. For high damping, in contrast, we predict a double-peaked position distribution, which we trace to an underlying bistability induced by feedback. Unlike in cavity-based optomechanics, stochastic processes play a major role in determining the bistable behavior. To support our conclusions, we present a...

  12. A High-Order Finite-Volume Algorithm for Fokker-Planck Collisions in Magnetized Plasmas

    Energy Technology Data Exchange (ETDEWEB)

    Xiong, Z; Cohen, R H; Rognlien, T D; Xu, X Q

    2007-04-18

    A high-order finite volume algorithm is developed for the Fokker-Planck Operator (FPO) describing Coulomb collisions in strongly magnetized plasmas. The algorithm is based on a general fourth-order reconstruction scheme for an unstructured grid in the velocity space spanned by parallel velocity and magnetic moment. The method provides density conservation and high-order-accurate evaluation of the FPO independent of the choice of the velocity coordinates. As an example, a linearized FPO in constant-of-motion coordinates, i.e. the total energy and the magnetic moment, is developed using the present algorithm combined with a cut-cell merging procedure. Numerical tests include the Spitzer thermalization problem and the return to isotropy for distributions initialized with velocity space loss cones. Utilization of the method for a nonlinear FPO is straightforward but requires evaluation of the Rosenbluth potentials.

  13. Fokker action of non-spinning compact binaries at the fourth post-Newtonian approximation

    CERN Document Server

    Bernard, Laura; Bohé, Alejandro; Faye, Guillaume; Marsat, Sylvain

    2015-01-01

    The Fokker action governing the motion of compact binary systems without spins is derived in harmonic coordinates at the fourth post-Newtonian approximation (4PN) of general relativity. Dimensional regularization is used for treating the local UV divergences associated with point particles, followed by a renormalization of the poles into a redefinition of the trajectories of the point masses. Effects at the 4PN order associated with wave tails propagating at infinity are included consistently at the level of the action. A finite part procedure based on analytic continuation deals with the IR divergencies at spatial infinity, which are shown to be fully consistent with the presence of near zone tails. Our end result at 4PN order satisfies all expected physical requirements. However, we find that it disagrees with the recently published result derived within the ADM Hamiltonian formulation of general relativity.

  14. Exact Analytic Solution of Fokker-Planck Equation for Propagation of Particles Scattered Isotropically

    CERN Document Server

    Malkov, M A

    2016-01-01

    An analytic solution for a Fokker-Planck equation that describes propagation of energetic particles through a scattering medium is obtained. The solution is found in terms of an infinite series of mixed moments of particle distribution. The spatial dispersion of a particle cloud released at t=0 evolves through three phases, ballistic (t>Tc), where Tc is the collision time.The ballistic phase is characterized by a decelerating expansion of the initial point source in form of "box" distribution with broadening walls. The next, transdiffusive phase is marked by the box walls broadened to its size and a noticeable slow down of expansion. Finally, the evolution enters the conventional diffusion phase.

  15. A Fokker-Planck Model of the Boltzmann Equation with Correct Prandtl Number for Polyatomic Gases

    Science.gov (United States)

    Mathiaud, J.; Mieussens, L.

    2017-07-01

    We propose an extension of the Fokker-Planck model of the Boltzmann equation to get a correct Prandtl number in the Compressible Navier-Stokes asymptotics for polyatomic gases. This is obtained by replacing the diffusion coefficient (which is the equilibrium temperature) by a non diagonal temperature tensor, like the Ellipsoidal-Statistical model is obtained from the Bathnagar-Gross-Krook model of the Boltzmann equation, and by adding a diffusion term for the internal energy. Our model is proved to satisfy the properties of conservation and a H-theorem. A Chapman-Enskog analysis shows how to compute the transport coefficients of our model. Some numerical tests are performed to illustrate that a correct Prandtl number can be obtained.

  16. Coupling the beam tracing code TORBEAM and the Fokker-Planck solver RELAX for fast electrons

    Science.gov (United States)

    Maj, O.; Poli, E.; Westerhof, E.

    2012-12-01

    In this paper the interface between the beam tracing code TORBEAM [Poli, Peeters and Pereverzev, Comp. Phys. Comm. 136, 90 (2001)] and the quasi-linear Fokker-Planck solver RELAX [Westerhof, Peeters and Schippers, Rijnhuizen Report No. RR 92-211 CA, 1992] is presented together with preliminary testing results for electron cyclotron waves in ITER plasmas and their effects on the electron distribution function. The resulting numerical package allows us to account for diffraction effects in the construction of the quasi-linear wave-particle diffusion operator. The coupling of the paraxial-WKB code TORBEAM to the ray-based code RELAX requires a reinterpretation of the paraxial wave field in terms of extended rays, which are addressed in details.

  17. On the spatially homogeneous and isotropic Einstein-Vlasov-Fokker-Planck system with cosmological scalar field

    CERN Document Server

    Calogero, Simone

    2016-01-01

    The Einstein-Vlasov-Fokker-Planck system describes the kinetic diffusion dynamics of self-gravitating particles within the Einstein theory of general relativity. We study the Cauchy problem for spatially homogeneous and isotropic solutions and prove the existence of both global solutions and solutions that blow-up in finite time depending on the size of certain functions of the initial data. We also derive information on the large-time behavior of global solutions and toward the singularity for solutions which blow-up in fine time. Our results entail the existence of a phase of decelerated expansion followed by a phase of accelerated expansion, in accordance with the physical expectations in cosmology.

  18. Quantization of second-order Lagrangians: The Fokker-Wheeler-Feynman model of electrodynamics

    Science.gov (United States)

    Moore, R. A.; Scott, T. C.

    1992-10-01

    The consequences of quantizing the Fokker-Wheeler-Feynman model of electrodynamics, treating the Lagrangian via its acceleration-dependent (1/c) power-series representation, is examined using recently validated methods. An exact treatment of this acceleration dependence yields, under certain circumstances, high-energy resonant modes. In the past, such modes have been assumed unphysical and have been removed by perturbative or order-reduction techniques. However, these modes appear to be of physical significance. This conclusion follows because this completely ab initio calculation, with no adjustable parameters, has a number of successes. It provides a description for resonances observed in the electron-positron emission from heavy-ion collisions, in particular, and in diproton collisions and, possibly, in other collision experiments as well.

  19. Self-Consistent Fokker-Planck Treatment Of Particle Distributions in Astrophysical Plasmas

    CERN Document Server

    Nayakshin, S; Nayakshin, Sergei; Melia, Fulvio

    1997-01-01

    High-energy, multi-component plasmas in which pair creation and annihilation, lepton-lepton scattering, lepton-proton scattering, and Comptonization all contribute to establishing the particle and photon distributions, are present in a broad range of compact astrophysical objects. Earlier work has included much of the microphysics needed to account for electron-photon and electron-proton interactions, but little has been done to handle the redistribution of the particles as a result of their Coulomb interaction with themselves in an arbitrary case. Our goal here is to use a Fokker-Planck approach in order to develop a fully self-consistent theory for the interaction of arbitrarily distributed particles and radiation to arrive at an accurate representation of the high-energy plasma in these sources. We conduct several tests representative of two dominant segments of parameter space and discuss physical implications of the non-Maxwellian distribution function. Approximate analytical forms for the electron distr...

  20. The closed-form solution of the reduced Fokker-Planck-Kolmogorov equation for nonlinear systems

    Science.gov (United States)

    Chen, Lincong; Sun, Jian-Qiao

    2016-12-01

    In this paper, we propose a new method to obtain the closed-form solution of the reduced Fokker-Planck-Kolmogorov equation for single degree of freedom nonlinear systems under external and parametric Gaussian white noise excitations. The assumed stationary probability density function consists of an exponential polynomial with a logarithmic term to account for parametric excitations. The undetermined coefficients in the assumed solution are computed with the help of an iterative method of weighted residue. We have found that the iterative process generates a sequence of solutions that converge to the exact solutions if they exist. Three examples with known exact steady-state probability density functions are used to demonstrate the convergence of the proposed method.

  1. Application of He's homotopy perturbation method for solving fractional Fokker-Planck equations

    Energy Technology Data Exchange (ETDEWEB)

    Mousa, Mohamed M. [Dept. of Basic Science, Benha Higher Inst. of Tech., Benha Univ. (Egypt); Dept. of Mechanics, al-Farabi Kazakh National Univ., Almaty (Kazakhstan); Kaltayev, Aidarkhan [Dept. of Mechanics, al-Farabi Kazakh National Univ., Almaty (Kazakhstan)

    2009-12-15

    The fractional Fokker-Planck equation (FFPE) has been used in many physical transport problems which take place under the influence of an external force field and other important applications in various areas of engineering and physics. In this paper, by means of the homotopy perturbation method (HPM), exact and approximate solutions are obtained for two classes of the FFPE initial value problems. The method gives an analytic solution in the form of a convergent series with easily computed components. The obtained results show that the HPM is easy to implement, accurate and reliable for solving FFPEs. The method introduces a promising tool for solving other types of differential equation with fractional order derivatives. (orig.)

  2. Fokker-Planck Simulation of Fast Wave Current Drive and Heating in the Reversed Field Pinch

    Science.gov (United States)

    Uchimoto, E.; Shiina, S.; Harvey, R. W.; Smirnov, A. P.; Forest, C. B.; Prager, S. C.; Wright, J. C.

    1999-11-01

    Fast wave current drive (FWCD) has been shown theoretically to be a good candidate for improving plasma confinement characteristics of a high-beta, reactor-grade RFP via current profile control.footnote S. Shiina, Y. Kondoh, H. Ishii, Nuclear Fusion 34, 1473 (1994); T. Nagai et al., Proc. ICPP (Nagoya, 1996), p. 1042; K. Kusano et al., 17th IAEA Fusion Energy Conf. (Yokohama, 1998), paper THP1/12. To assess the effects of toroidicity and quasilinear modifications to the electron distribution function on FWCD, we are using the RFP version of ray-tracing and Fokker-Planck codes (GENRAY and CQL3D). Although lower hybrid slow waves are ideally suited for poloidal current drive in large RFPs presently in operation, possible use of fast waves is being considered for core current drive and heating in these devices. For MST parameters, our calculations focus on intermediate to high harmonic fast waves for which geometric optics is valid.

  3. Point of care information services: a platform for self-directed continuing medical education for front line decision makers.

    Science.gov (United States)

    Moja, Lorenzo; Kwag, Koren Hyogene

    2015-02-01

    The structure and aim of continuing medical education (CME) is shifting from the passive transmission of knowledge to a competency-based model focused on professional development. Self-directed learning is emerging as the foremost educational method for advancing competency-based CME. In a field marked by the constant expansion of knowledge, self-directed learning allows physicians to tailor their learning strategy to meet the information needs of practice. Point of care information services are innovative tools that provide health professionals with digested evidence at the front line to guide decision making. By mobilising self-directing learning to meet the information needs of clinicians at the bedside, point of care information services represent a promising platform for competency-based CME. Several points, however, must be considered to enhance the accessibility and development of these tools to improve competency-based CME and the quality of care.

  4. Service Oriented Architecture for Clinical Decision Support: A Systematic Review and Future Directions

    Science.gov (United States)

    Loya, Salvador Rodriguez; Kawamoto, Kensaku; Chatwin, Chris; Huser, Vojtech

    2017-01-01

    The use of a service-oriented architecture (SOA) has been identified as a promising approach for improving health care by facilitating reliable clinical decision support (CDS). A review of the literature through October 2013 identified 44 articles on this topic. The review suggests that SOA related technologies such as Business Process Model and Notation (BPMN) and Service Component Architecture (SCA) have not been generally adopted to impact health IT systems’ performance for better care solutions. Additionally, technologies such as Enterprise Service Bus (ESB) and architectural approaches like Service Choreography have not been generally exploited among researchers and developers. Based on the experience of other industries and our observation of the evolution of SOA, we found that the greater use of these approaches have the potential to significantly impact SOA implementations for CDS PMID:25325996

  5. Service oriented architecture for clinical decision support: a systematic review and future directions.

    Science.gov (United States)

    Loya, Salvador Rodriguez; Kawamoto, Kensaku; Chatwin, Chris; Huser, Vojtech

    2014-12-01

    The use of a service-oriented architecture (SOA) has been identified as a promising approach for improving health care by facilitating reliable clinical decision support (CDS). A review of the literature through October 2013 identified 44 articles on this topic. The review suggests that SOA related technologies such as Business Process Model and Notation (BPMN) and Service Component Architecture (SCA) have not been generally adopted to impact health IT systems' performance for better care solutions. Additionally, technologies such as Enterprise Service Bus (ESB) and architectural approaches like Service Choreography have not been generally exploited among researchers and developers. Based on the experience of other industries and our observation of the evolution of SOA, we found that the greater use of these approaches have the potential to significantly impact SOA implementations for CDS.

  6. The impact of the directive on payment services in the internal market on Danish and Belgian legislation on fraudulent payment transactions

    DEFF Research Database (Denmark)

    Henschel, Rene Franz; Steenot, Reinhard

    2010-01-01

    In December 2007, the European Directive on payment services in the internal market was published in the Official Journal of the European Union. This directive, which has to be transposed into national legislation. This directive, which has to be transposed into national legislation before 1...... the implementations are in accordance with the directive and, finally, whether the directive and the implementations reduce or strengthen the protection of payment service users in the two countries and promote the creation of a common internal market for payment services....

  7. New Directions in Space Operations Services in Support of Interplanetary Exploration

    Science.gov (United States)

    Bradford, Robert N.

    2005-01-01

    To gain access to the necessary operational processes and data in support of NASA's Lunar/Mars Exploration Initiative, new services, adequate levels of computing cycles and access to myriad forms of data must be provided to onboard spacecraft and ground based personnel/systems (earth, lunar and Martian) to enable interplanetary exploration by humans. These systems, cycles and access to vast amounts of development, test and operational data will be required to provide a new level of services not currently available to existing spacecraft, on board crews and other operational personnel. Although current voice, video and data systems in support of current space based operations has been adequate, new highly reliable and autonomous processes and services will be necessary for future space exploration activities. These services will range from the more mundane voice in LEO to voice in interplanetary travel which because of the high latencies will require new voice processes and standards. New services, like component failure predictions based on data mining of significant quantities of data, located at disparate locations, will be required. 3D or holographic representation of onboard components, systems or family members will greatly improve maintenance, operations and service restoration not to mention crew morale. Current operational systems and standards, like the Internet Protocol, will not able to provide the level of service required end to end from an end point on the Martian surface like a scientific instrument to a researcher at a university. Ground operations whether earth, lunar or Martian and in flight operations to the moon and especially to Mars will require significant autonomy that will require access to highly reliable processing capabilities, data storage based on network storage technologies. Significant processing cycles will be needed onboard but could be borrowed from other locations either ground based or onboard other spacecraft. Reliability will

  8. Nonprofit health care services marketing: persuasive messages based on multidimensional concept mapping and direct magnitude estimation.

    Science.gov (United States)

    Hall, Michael L

    2009-01-01

    Persuasive messages for marketing healthcare services in general and coordinated care in particular are more important now for providers, hospitals, and third-party payers than ever before. The combination of measurement-based information and creativity may be among the most critical factors in reaching markets or expanding markets. The research presented here provides an approach to marketing coordinated care services which allows healthcare managers to plan persuasive messages given the market conditions they face. Using market respondents' thinking about product attributes combined with distance measurement between pairs of product attributes, a conceptual marketing map is presented and applied to advertising, message copy, and delivery. The data reported here are representative of the potential caregivers for which the messages are intended. Results are described with implications for application to coordinated care services. Theory building and marketing practice are discussed in the light of findings and methodology.

  9. DEVELOPMENT OF SERVICE MARKET OF HIGHER EDUCATION AS A PRIORITY DIRECTION OF VOCATIONAL SCHOOL MODERNIZATION

    Directory of Open Access Journals (Sweden)

    N. N. Bedenko

    2014-09-01

    Full Text Available The article deals with the analysis of the developed market of higher educational services, various problems in the regional higher education service markets are designated and disproportions in the educational services market are revealed which in case of a suspense pass into the category of barriers to representatives of all interested parties.In the unstable conditions of a social and economic situation in our society, absence of the forecast of economy development, formation of profile structure of specialist training is complicated. Violation of traditional educational communications with employers, weak influence of professional communities on educational system development, backwardness of a labor market complicates reduction of education content in compliance with economic and social sphere requirements, the organization of practical training for students, employment of graduates. New conditions of providing educational services in Russia, such as transition from the state monopoly to a multistructure education system as well as paid education have caused a need of reorganization in the work of educational institutions. Competitive fight for the consumer has toughened requirements to quality and conditions of training service. Creation of an extensive network of the most various non-state educational institutions, penetration of the foreign educational institutions into Russian market which have a rich market experience in the field of professional education, possibility for Russian citizens to get education abroad  have resulted in the fact that consumers of educational services can now make an independent choice of various training programs, depending on its contents, forms and training methods, as well as conditions of their acquisition.

  10. Fractional Fokker-Planck equation with tempered α-stable waiting times: langevin picture and computer simulation.

    Science.gov (United States)

    Gajda, Janusz; Magdziarz, Marcin

    2010-07-01

    In this paper we introduce a Langevin-type model of subdiffusion with tempered α-stable waiting times. We consider the case of space-dependent external force fields. The model displays subdiffusive behavior for small times and it converges to standard Gaussian diffusion for large time scales. We derive general properties of tempered anomalous diffusion from the theory of tempered α-stable processes, in particular we find the form of the fractional Fokker-Planck equation corresponding to the tempered subdiffusion. We also construct an algorithm of simulation of sample paths of the introduced process. We apply the algorithm to approximate solutions of the fractional Fokker-Planck equation and to study statistical properties of the tempered subdiffusion via Monte Carlo methods.

  11. From Chemical Langevin Equations to Fokker-Planck Equation: Application of Hodge Decomposition and Klein-Kramers Equation

    Institute of Scientific and Technical Information of China (English)

    MU Wei-Hua; OU-YANG Zhong-Can; Li Xiao-Qing

    2011-01-01

    The stochastic systems without detailed balance are common in various chemical reaction systems, such as metabolic network systems. In studies of these systems, the concept of potential landscape is useful. However, what are the sufficient and necessary conditions of the existence of the potential function is still an open problem. Use Hodge decomposition theorem in differential form theory, we focus on the general chemical Langevin equations, which reflect complex chemical reaction systems. We analysis the conditions for the existence of potential landscape of the systems.By mapping the stochastic differential equations to a Hamiltonian mechanical system, we obtain the Fokker-Planck equation of the chemical reaction systems. The obtained Fokker-Planck equation can be used in further studies of other steady properties of complex chemical reaction systems, such as their steady state entropies.

  12. Analysis of linear and nonlinear conductivity of plasma-like systems on the basis of the Fokker-Planck equation

    CERN Document Server

    Trigger, S A; van Heijst, G J F; Litinski, D

    2014-01-01

    The problems of high linear conductivity in an electric field, as well as nonlinear conductivity, are considered for plasma-like systems. First, we recall several observations of nonlinear fast charge transport in dusty plasma, molecular chains, lattices, conducting polymers and semiconductor layers. Exploring the role of noise we introduce the generalized Fokker-Planck equation. Second, one-dimensional models are considered on the basis of the Fokker-Planck equation with active and passive velocity-dependent friction including an external electrical field. On this basis it is possible to find the linear and nonlinear conductivities for electrons and other charged particles in a homogeneous external field. It is shown that the velocity dependence of the friction coefficient can lead to an essential increase of the electron average velocity and the corresponding conductivity in comparison with the usual model of constant friction, which is described by the Drude-type conductivity. Applications including novel ...

  13. The impact of culture and recipient perspective on direction giving in the service of wayfinding

    NARCIS (Netherlands)

    Hund, Alycia M.; Schmettow, Martin; Noordzij, Matthijs L.

    2012-01-01

    We examined how culture and recipient perspective affect direction giving during wayfinding. Participants from the United States and the Netherlands provided directions from starting locations to destinations for fictional recipients driving through a town (route perspective) or looking at a map of

  14. The impact of culture and recipient perspective on direction giving in the service of wayfinding

    NARCIS (Netherlands)

    Hund, Alycia M.; Schmettow, Martin; Noordzij, Matthijs Leendert

    2012-01-01

    We examined how culture and recipient perspective affect direction giving during wayfinding. Participants from the United States and the Netherlands provided directions from starting locations to destinations for fictional recipients driving through a town (route perspective) or looking at a map of

  15. 78 FR 52538 - Office of Direct Service and Contracting Tribes; National Indian Health Outreach and Education...

    Science.gov (United States)

    2013-08-23

    ...) and Hardship Waiver requirements) and eligibility determinations, and maximizing revenue opportunities... reform regarding Medicaid expansion revenue opportunities and individual health insurance coverage and... Internal Revenue Service that may take an additional 2-5 weeks to become active). Completing and submitting...

  16. Mental Health and Self-Directed Violence among Student Service Members/Veterans in Postsecondary Education

    Science.gov (United States)

    Blosnich, John R.; Kopacz, Marek S.; McCarten, Janet; Bossarte, Robert M.

    2015-01-01

    Objectives: Using a sample of student service members/veterans, the current study aimed to examine the prevalence of psychiatric diagnoses and suicide-related outcomes and the association of hazardous duty with mental health. Participants: Data are from the Fall 2011 National College Health Assessment (N = 27,774). Methods: Logistic regression was…

  17. 38 CFR 3.304 - Direct service connection; wartime and peacetime.

    Science.gov (United States)

    2010-07-01

    ... factors pertinent to the basic character, origin and development of such injury or disease. They should be... relating to the origin, or incurrence of any disease or injury made in service if against his or her own...) evidence demonstrates that an injury or disease existed prior thereto and was not aggravated by...

  18. 14 CFR 39.27 - What do I do if the airworthiness directive conflicts with the service document on which it is...

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false What do I do if the airworthiness directive conflicts with the service document on which it is based? 39.27 Section 39.27 Aeronautics and Space FEDERAL... do if the airworthiness directive conflicts with the service document on which it is based? In...

  19. Kriging direct and indirect estimates of sulfate deposition: A comparison. Forest Service research paper

    Energy Technology Data Exchange (ETDEWEB)

    Reams, G.A.; Huso, M.M.P.; Vong, R.J.; McCollum, J.M.

    1997-08-01

    Due to logistical and cost constraints, acidic deposition is rarely measured at forest research or sampling locations. A crucial first step to assessing the effects of acid rain on forests is an accurate estimate of acidic deposition at forest sample sites. The authors examine two methods (direct and indirect) for estimating sulfate deposition at atmospherically unmonitored forest sites. The direct method only uses directly measured deposition data, while the indirect method additionally incorporates precipitation measurements from a spatially denser network of monitoring sites. Sulfate deposition values were estimated by point kriging using both the direct and indirect methods. By using the supplemental data from the precipitation monitoring network, estimates of sulfate deposition improved substantially, particularly at sites that are relatively isolated to the acid deposition monitoring network. Cross-validated procedures indicate that by using the indirect method, a reduction of approximately 20 to 25 percent in the predicted error sum of squares occurred.

  20. Community pharmacy-based asthma services: current perspectives and future directions

    Directory of Open Access Journals (Sweden)

    Bollmeier SG

    2014-08-01

    Full Text Available Suzanne G Bollmeier, Theresa R ProsserSt Louis College of Pharmacy, St Louis, MO, USAAbstract: Achieving and maintaining asthma control and improving patients’ quality of life are cornerstones of asthma management. This review summarizes the current literature related to services provided by community pharmacists to patients with asthma. Comprehensive asthma programs provided by community pharmacists have improved patients’ knowledge of the disease, device technique skills, patient adherence, and quality of life. One study shows such comprehensive programs are cost effective in patients with severe or uncontrolled asthma, which cannot be extrapolated to all programs. Targeted interventions by pharmacists could be provided to a larger population of patients. Pharmacists have identified that lack of time, resources, and training are barriers to implementing asthma programs. In addition, optimal models are needed to integrate interventions into the dispensing workflow. Optimal training programs should include skills in problem solving, device technique, and counseling. A movement towards “institutionalizing” routine asthma interventions or patient encounters is necessary if consistent services are to be given to all patients, and appropriate compensation is provided for pharmacist services.Keywords: community, pharmacy, pharmacist, asthma, education

  1. Vlasov-Fokker-Planck simulations of fast-electron transport with hydrodynamic plasma response

    Energy Technology Data Exchange (ETDEWEB)

    Kingham, R J; Sherlock, M; Ridgers, C P; Evans, R G, E-mail: rj.kingham@imperial.ac.u [Plasma Physics Group, Imperial College London, London SW7 2AZ (United Kingdom)

    2010-08-01

    We report on kinetic simulations of the transport of laser-produced relativistic electron beams (REB) through solid-density plasma, including the hydrodynamic response of the plasma. We consider REBs with parameters relevant to fast-ignition of compressed inertial confinement fusion capsules. We show that over the 10-20ps timescales required for fast-ignition, thermal pressure (from Ohmic heating) can significantly modify the density which in turn strongly affects the propagation of injected fast-electrons; it allows them to re-collimate into a narrow, intense beam under conditions where they initially undergo beam-hollowing. Similar static-density calculations do not show re-collimation. The re-collimation effect is attributed to PdV cooling in the pressure-induced density-channel, which in turn suppresses defocusing magnetic fields generated by resistivity gradients. These simulations have been carried out using the new 2D-3V Vlasov-Fokker-Planck (VFP) code FIDO running in hybrid mode.

  2. Importance Sampling Variance Reduction for the Fokker-Planck Rarefied Gas Particle Method

    CERN Document Server

    Collyer, Benjamin; Lockerby, Duncan

    2015-01-01

    Models and methods that are able to accurately and efficiently predict the flows of low-speed rarefied gases are in high demand, due to the increasing ability to manufacture devices at micro and nano scales. One such model and method is a Fokker-Planck approximation to the Boltzmann equation, which can be solved numerically by a stochastic particle method. The stochastic nature of this method leads to noisy estimates of the thermodynamic quantities one wishes to sample when the signal is small in comparison to the thermal velocity of the gas. Recently, Gorji et al have proposed a method which is able to greatly reduce the variance of the estimators, by creating a correlated stochastic process which acts as a control variate for the noisy estimates. However, there are potential difficulties involved when the geometry of the problem is complex, as the method requires the density to be solved for independently. Importance sampling is a variance reduction technique that has already been shown to successfully redu...

  3. Bounce-averaged Fokker-Planck Simulation of Runaway Avalanche from Secondary Knock-on Production

    Science.gov (United States)

    Chiu, S. C.; Chan, V. S.; Harvey, R. W.; Rosenbluth, M. N.

    1996-11-01

    It has been pointed out that secondary production of runaway electrons by knock-on collisions with very energetic confined electrons can significantly change the runaway rate,(M.N. Rosenbluth, Bull. Amer. Phys. Soc. 40), 1804 (1995).^,(N.T. Besedin, I.M. Pankratov, Nucl. Fusion 26), 807 (1986).^,(R. Jaspers, K.H. Finden, G. Mank et al.), Nucl. Fusion 33, 1775 (1993). and is potentially a serious problem in reactors. Previous calculations of the effect have only partially included important effects such as toroidal trapping, synchrotron radiation, and bremsstrahlung. Furthermore, in a normal constant current operation, the increase of the density of runaway electrons causes a decrease of the ohmic field and all these effects can balance to a steady-state. The purpose of the present paper is to present results on bounce-averaged Fokker-Planck simulations of knock-on avalanching runaways including these effects. Initially, an energetic seed component is inserted to initiate knock-on avalanching. Results on the dependence of the steady-state runaway current on Z_eff, density, and radial location will be presented.

  4. Applications of the Fokker-Planck equation in circuit quantum electrodynamics

    Science.gov (United States)

    Elliott, Matthew; Ginossar, Eran

    2016-10-01

    We study exact solutions of the steady-state behavior of several nonlinear open quantum systems which can be applied to the field of circuit quantum electrodynamics. Using Fokker-Planck equations in the generalized P representation, we investigate the analytical solutions of two fundamental models. First, we solve for the steady-state response of a linear cavity that is coupled to an approximate transmon qubit and use this solution to study both the weak and strong driving regimes, using analytical expressions for the moments of both cavity and transmon fields, along with the Husimi Q function for the transmon. Second, we revist exact solutions of a quantum Duffing oscillator, which is driven both coherently and parametrically while also experiencing decoherence by the loss of single photons and pairs of photons. We use this solution to discuss both stabilization of Schrödinger cat states and the generation of squeezed states in parametric amplifiers, in addition to studying the Q functions of the different phases of the quantum system. The field of superconducting circuits, with its strong nonlinearities and couplings, has provided access to parameter regimes in which returning to these exact quantum optics methods can provide valuable insights.

  5. Diffusion in an expanding medium: Fokker-Planck equation, Green's function, and first-passage properties

    Science.gov (United States)

    Yuste, S. B.; Abad, E.; Escudero, C.

    2016-09-01

    We present a classical, mesoscopic derivation of the Fokker-Planck equation for diffusion in an expanding medium. To this end, we take a conveniently generalized Chapman-Kolmogorov equation as the starting point. We obtain an analytical expression for the Green's function (propagator) and investigate both analytically and numerically how this function and the associated moments behave. We also study first-passage properties in expanding hyperspherical geometries. We show that in all cases the behavior is determined to a great extent by the so-called Brownian conformal time τ (t ) , which we define via the relation τ ˙=1 /a2 , where a (t ) is the expansion scale factor. If the medium expansion is driven by a power law [a (t ) ∝tγ with γ >0 ] , then we find interesting crossover effects in the mixing effectiveness of the diffusion process when the characteristic exponent γ is varied. Crossover effects are also found at the level of the survival probability and of the moments of the first passage-time distribution with two different regimes separated by the critical value γ =1 /2 . The case of an exponential scale factor is analyzed separately both for expanding and contracting media. In the latter situation, a stationary probability distribution arises in the long-time limit.

  6. Design and numerical investigation of swirl recovery vanes for the Fokker 29 propeller

    Institute of Scientific and Technical Information of China (English)

    Wang Yangang; Li Qingxi; G. Eitelberg; L.L.M. Veldhuis; M. Kotsonis

    2014-01-01

    Swirl recovery vanes (SRVs) are a set of stationary vanes located downstream from a propeller, which may recover some of the residual swirl from the propeller, hoping for an improve-ment in both thrust and efficiency. The SRV concept design for a scaled version representing the Fokker 29 propeller is performed in this paper, which may give rise to a promotion in propulsive performance of this traditional propeller. Firstly the numerical strategy is validated from two aspects of global quantities and the local flow field of the propeller compared with experimental data, and then the exit flow together with the development of propeller wake is analyzed in detail. Three kinds of SRV are designed with multiple circular airfoils. The numerical results show that the swirl behind the propeller is recovered significantly with Model V3, which is characterized by the highest solidity along spanwise, for various working conditions, and the combination of rotor and vane produced 5.76%extra thrust at the design point. However, a lower efficiency is observed asking for a better vane design and the choice of a working point. The vane position is studied which shows that there is an optimum range for higher thrust and efficiency.

  7. Fokker-Planck description for a linear delayed Langevin equation with additive Gaussian noise

    Science.gov (United States)

    Giuggioli, Luca; McKetterick, Thomas John; Kenkre, V. M.; Chase, Matthew

    2016-09-01

    We construct an equivalent probability description of linear multi-delay Langevin equations subject to additive Gaussian white noise. By exploiting the time-convolutionless transform and a time variable transformation we are able to write a Fokker-Planck equation (FPE) for the 1-time and for the 2-time probability distributions valid irrespective of the regime of stability of the Langevin equations. We solve exactly the derived FPEs and analyze the aging dynamics by studying analytically the conditional probability distribution. We discuss explicitly why the initially conditioned distribution is not sufficient to describe fully out a non-Markov process as both preparation and observation times have bearing on its dynamics. As our analytic procedure can also be applied to linear Langevin equations with memory kernels, we compare the non-Markov dynamics of a one-delay system with that of a generalized Langevin equation with an exponential as well as a power law memory. Application to a generalization of the Green-Kubo formula is also presented.

  8. Fokker-Planck Equation for Boltzmann-type and Active Particles transfer probability approach

    CERN Document Server

    Trigger, S A

    2002-01-01

    Fokker-Planck equation with the velocity-dependent coefficients is considered for various isotropic systems on the basis of probability transition (PT) approach. This method provides the self-consistent and universal description of friction and diffusion for Brownian particles. Renormalization of the friction coefficient is shown to occur for two dimensional (2-D) and three dimensional (3-D) cases, due to the tensorial character of diffusion. The specific forms of PT are calculated for the Boltzmann-type of collisions and for the absorption-type of collisions (the later are typical for dusty plasmas and some other systems). Validity of the Einstein's relation for the Boltzmann-type collisions is proved for the velocity-dependent friction and diffusion coefficients. For non-Boltzmann collisions, such as, e.g., absorption collisions, the Einstein relation is violated, although some other relations (determined by the structure of PT) can exist. The collecting part of the ion drag force in a dusty plasma, arising...

  9. Design and numerical investigation of swirl recovery vanes for the Fokker 29 propeller

    Directory of Open Access Journals (Sweden)

    Wang Yangang

    2014-10-01

    Full Text Available Swirl recovery vanes (SRVs are a set of stationary vanes located downstream from a propeller, which may recover some of the residual swirl from the propeller, hoping for an improvement in both thrust and efficiency. The SRV concept design for a scaled version representing the Fokker 29 propeller is performed in this paper, which may give rise to a promotion in propulsive performance of this traditional propeller. Firstly the numerical strategy is validated from two aspects of global quantities and the local flow field of the propeller compared with experimental data, and then the exit flow together with the development of propeller wake is analyzed in detail. Three kinds of SRV are designed with multiple circular airfoils. The numerical results show that the swirl behind the propeller is recovered significantly with Model V3, which is characterized by the highest solidity along spanwise, for various working conditions, and the combination of rotor and vane produced 5.76% extra thrust at the design point. However, a lower efficiency is observed asking for a better vane design and the choice of a working point. The vane position is studied which shows that there is an optimum range for higher thrust and efficiency.

  10. Nonparametric estimates of drift and diffusion profiles via Fokker-Planck algebra.

    Science.gov (United States)

    Lund, Steven P; Hubbard, Joseph B; Halter, Michael

    2014-11-06

    Diffusion processes superimposed upon deterministic motion play a key role in understanding and controlling the transport of matter, energy, momentum, and even information in physics, chemistry, material science, biology, and communications technology. Given functions defining these random and deterministic components, the Fokker-Planck (FP) equation is often used to model these diffusive systems. Many methods exist for estimating the drift and diffusion profiles from one or more identifiable diffusive trajectories; however, when many identical entities diffuse simultaneously, it may not be possible to identify individual trajectories. Here we present a method capable of simultaneously providing nonparametric estimates for both drift and diffusion profiles from evolving density profiles, requiring only the validity of Langevin/FP dynamics. This algebraic FP manipulation provides a flexible and robust framework for estimating stationary drift and diffusion coefficient profiles, is not based on fluctuation theory or solved diffusion equations, and may facilitate predictions for many experimental systems. We illustrate this approach on experimental data obtained from a model lipid bilayer system exhibiting free diffusion and electric field induced drift. The wide range over which this approach provides accurate estimates for drift and diffusion profiles is demonstrated through simulation.

  11. An Efficient Fokker-Planck Solver and its Application to Stochastic Particle Acceleration in Galaxy Clusters

    CERN Document Server

    Donnert, Julius

    2014-01-01

    Particle acceleration by turbulence plays a role in many astrophysical environments. The non- linear evolution of the underlying cosmic-ray spectrum is complex and can be described by a Fokker-Planck equation, which in general has to be solved numerically. We present here an implementation to compute the evolution of a cosmic-ray spectrum coupled to turbulence considering isotropic particle pitch-angle distributions and taking into account the relevant particle energy gains and losses. Our code can be used in run time and post-processing to very large astrophysical fluid simulations. We also propose a novel method to compress cosmic- ray spectra by a factor of ten, to ease the memory demand in very large simulations. We show a number of code tests, which firmly establish the correctness of the code. In this paper we focus on relativistic electrons, but our code and methods can be easily extended to the case of hadrons. We apply our pipeline to the relevant problem of particle acceleration in galaxy clusters. ...

  12. Beyond the clinic: 'direct-to-consumer' genomic profiling services and pharmacogenomics.

    Science.gov (United States)

    Prainsack, Barbara; Vayena, Effy

    2013-03-01

    This article provides an overview of commercial pharmacogenetics and pharmacogenomics testing services offered online. The concept of 'beyond-the-clinic' (BTC) genomic testing is introduced to refer to the variety of formats in which these tests are offered and a typology of BTC models is developed. The authors review such models in relation to tests for individual drug response that are currently on offer. In conclusion, the authors argue that the evolving BTC domain provides opportunities for the pioneering of integrated data repositories, whose gatekeepers are patients or citizens. The authors anticipate that such developments will benefit pharmacogenomics sooner than other areas of medical practice.

  13. E-health applications and services for patient empowerment: Directions for best practices in the Netherlands

    NARCIS (Netherlands)

    Alpay, L.L.; Henkemans, O.B.; Otten, W.; Rövekamp, T.A.J.M.; Dumay, A.C.M.

    2010-01-01

    Objective: E-health may enable the empowerment process for patients, particularly the chronically ill. However, e-health is not always designed with the requirements of patient empowerment in mind. Drawing on evidence-based e-health studies, we propose directions for best practices to develop e-heal

  14. E-health Applications and Services for Patient Empowerment: Directions for Best Practices in The Netherlands

    NARCIS (Netherlands)

    Alpay, L.L.; Blanson Henkemans, O.; Otten, W.; Rövekamp, T.A.J.M.; Dumay, A.C.M.

    2010-01-01

    Objective: E-health may enable the empowerment process for patients, particularly the chronically ill. However, e-health is not always designed with the requirements of patient empowerment in mind. Drawing on evidence-based e-health studies, we propose directions for best practices to develop e-heal

  15. The impact of the directive on payment services in the internal market on Danish and Belgian legislation on fraudulent payment transactions

    DEFF Research Database (Denmark)

    Henschel, Rene Franz; Steenot, Reinhard

    2010-01-01

    In December 2007, the European Directive on payment services in the internal market was published in the Official Journal of the European Union. This directive, which has to be transposed into national legislation. This directive, which has to be transposed into national legislation before 1...... out in what way the directive had or will have an impact on Danish and Belgian legislation. More specifically, we will examine how the rules incorporated in the European directive, which is based on the principle of maximum harmonisation, are implemented in Belgium and Denmark, whether...... the implementations are in accordance with the directive and, finally, whether the directive and the implementations reduce or strengthen the protection of payment service users in the two countries and promote the creation of a common internal market for payment services....

  16. [Direct communication on the Internet. Uninet: the university link for Integrate Telematic Services].

    Science.gov (United States)

    Coma del Corral, M J; Martín-Alganza, A; Hawa-Attourah, M

    1998-06-01

    The importance of Internet as a communication medium is clear due to the amount of information it distributes and the high number of potential recipients it has. The appearance of virtual user communities (CMV) focuses to information classification within subjects of interest for certain groups of people in order to facilitate its search and use. The UniNet project of Integrated Telematic Services for CMV through, as well as other subprojects, the 'propuesta RedUni' encourages the creation of CMV by mean of integration of various computer and Internet resources, such as distribution mailing list, web pages, Internet Relay Chat (IRC), etc. The current state of IRC in such context is presented and the utilities of the known as Scientific-IRC as a professional real time communication tool are discussed.

  17. The impact of the Directive on Payment Services in the Internal Market on Danish and Belgium Legislation on Fraudulent Payment Transactions

    DEFF Research Database (Denmark)

    Henschel, Rene Franz; Steenot, Reinhard

    2009-01-01

    In December 2007, the European Directive on payment services in the internal market was published in the Official Journal. This Directive, which has to be transposed into national legislation before the 1st November 2009, contains many rules on payments, including rules on the allocation of liabi......In December 2007, the European Directive on payment services in the internal market was published in the Official Journal. This Directive, which has to be transposed into national legislation before the 1st November 2009, contains many rules on payments, including rules on the allocation...... the Directive and the implementations reduce or strengthen the protection of payment service users in the two countries and promotes the creation of a common internal market for payment services...

  18. Directions for Effectiveness Research to Improve Health Services for Late-Life Depression in the United States.

    Science.gov (United States)

    Hoeft, Theresa J; Hinton, Ladson; Liu, Jessica; Unützer, Jürgen

    2016-01-01

    Considerable progress has been made in the treatment of late-life depression over the past 20 years, yet considerable gaps in care remain. Gaps in care are particularly pronounced for older men, certain racial and ethnic minority groups, and those with comorbid medical or mental disorders. We reviewed the peer-reviewed literature and conducted interviews with experts in late-life depression to identify promising directions for effectiveness research to address these gaps in care. We searched the PubMed, PsychInfo, and CINHAL databases between January 1, 1998, through August 31, 2013, using terms related to late-life depression and any of the following: epidemiology, services organization, economics of care, underserved groups including health disparities, impact on caregivers, and interventions. The results of this selective review supplemented by more current recommendations from national experts highlight three priority research areas to improve health services for late-life depression: focusing on the unique needs of the patient through patient-centered care and culturally sensitive care, involving caregivers outside the traditional clinical care team, and involving alternate settings of care. We build on these results to offer five recommendations for future effectiveness research that hold considerable potential to advance intervention and health services development for late-life depression.

  19. THE CONSTRUCTION OF IMPORTANCE-PERFORMANCE GRID IN TOURIST SERVICES RESEARCH WITHOUT THE DIRECT DETERMINATION OF THE ATTRIBUTES IMPORTANCE

    Directory of Open Access Journals (Sweden)

    Ban Olimpia

    2012-07-01

    Full Text Available The importance-performance grid is a marketing instrument used to make decisions regarding the growth of the consumers’ satisfaction, by optimizing the attributes of products. This grid is a useful instrument, as it is shown in the paper, to the extent to which the importance and performance of the attributes are correctly recorded. Another idea underlined in the paper is that regarding the difficulty to directly determine the importance of attributes or in the same stage with the determination of the service performance, according to these attributes. The objectives of this paper are to analyze the importance-performance grid (suggested by Martilla and amended by Abalo,through an empirical study in the field of tourist services used and to test the conditions to carry out this grid taking into account the hypothetical case of indirectly determining the importance of the quality attributes. The literature in the field regarding the importance-performance analysis is analysed and the subsequent amendments to the previous grid suggested by Martilla and James in 1977. The present paper is a continuation of several studies on the same subject, in which the following research methods were used: direct survey by questionnaire, the Spearman correlation coefficient, and the entropy calculus. A comparative analysis of the importance-performance grid if directly recording the importance of attributes (through survey by questionnaire and of the indirect determination of the importance of the attributes (through the Spearman coefficient and entropy calculus is being suggested. The results indicate possible uses of methods, yet it raises a series of collateral problems regarding their application. The contribution of this paper is given by the suggestion of two methods to indirectly determine the importance of attributes, which take into account the data measurement scale used and the collinearity among attributes and which lead to pertinent results

  20. [Direct service costs of diabetes mellitus hospitalisations in the Mexican Institute of Social Security].

    Science.gov (United States)

    Salas-Zapata, Leonardo; Palacio-Mejía, Lina Sofía; Aracena-Genao, Belkis; Hernández-Ávila, Juan Eugenio; Nieto-López, Emmanuel Salvador

    2016-08-02

    To estimate the direct costs related to hospitalizations for diabetes mellitus and its complications in the Mexican Institute of Social Security METHODS: The hospital care costs of patients with diabetes mellitus using diagnosis-related groups in the IMSS (Mexican Institute of Social Security) and the hospital discharges from the corresponding E10-E14 codes for diabetes mellitus were estimated between 2008-2013. Costs were grouped according to demographic characteristics and main condition, and were estimated in US dollars in 2013. 411,302 diabetes mellitus discharges were recorded, representing a cost of $1,563 million. 52.44% of hospital discharges were men and 77.26% were for type 2 diabetes mellitus. The biggest cost was attributed to peripheral circulatory complications (34.84%) and people from 45-64 years of age (47.1%). Discharges decreased by 3.84% and total costs by 1.75% in the period analysed. The complications that caused the biggest cost variations were ketoacidosis (50.7%), ophthalmic (22.6%) and circulatory (18.81%). Hospital care for diabetes mellitus represents an important financial challenge for the IMSS. The increase in the frequency of hospitalisations in the productive age group, which affects society as a whole, is an even bigger challenge, and suggests the need to strengthen monitoring of diabetics in order to prevent complications that require hospital care. Copyright © 2016 SESPAS. Publicado por Elsevier España, S.L.U. All rights reserved.

  1. A mixed SOC-turbulence model for nonlocal transport and space-fractional Fokker-Planck equation

    CERN Document Server

    Milovanov, Alexander V

    2013-01-01

    The phenomena of nonlocal transport in magnetically confined plasma are theoretically analyzed. A hybrid model is proposed, which brings together the notion of inverse energy cascade, typical of drift-wave- and two-dimensional fluid turbulence, and the ideas of avalanching behavior, associable with self-organized critical (SOC) behavior. Using statistical arguments, it is shown that an amplification mechanism is needed to introduce nonlocality into dynamics. We obtain a consistent derivation of nonlocal Fokker-Planck equation with space-fractional derivatives from a stochastic Markovian process with the transition probabilities defined in reciprocal space.

  2. Power-law Fokker-Planck equation of unimolecular reaction based on the approximation to master equation

    Science.gov (United States)

    Zhou, Yanjun; Yin, Cangtao

    2016-12-01

    The Fokker-Planck equation (FPE) of the unimolecular reaction with Tsallis distribution is established by means of approximation to the master equation. The memory effect, taken into transition probability, is relevant and important for lots of anomalous phenomena. The Taylor expansion for large volume is applied to derive the power-law FPE. The steady-state solution of FPE and microscopic dynamics Ito-Langevin equation of concentration variables are therefore obtained and discussed. Two unimolecular reactions are taken as examples and the concentration distributions with different power-law parameters are analyzed, which may imply strong memory effect of hopping process.

  3. Analytical Solution of Space-Time Fractional Fokker-Planck Equation by Homotopy Perturbation Sumudu Transform Method

    Directory of Open Access Journals (Sweden)

    Ravi Shanker Dubey

    2015-01-01

    Full Text Available An efficient approach based on homotopy perturbation method by using Sumudu transform is proposed to solve some linear and nonlinear space-time fractional Fokker-Planck equations (FPEs in closed form. The space and time fractional derivatives are considered in Caputo sense. The homotopy perturbation Sumudu transform method (HPSTM is a combined form of Sumudu transform, homotopy perturbation method, and He’s polynomials. The nonlinear terms can be easily handled by the use of He’s polynomials. Some examples show that the HPSTM is an effective tool for solving many space time fractional partial differential equations.

  4. ANÁLISIS DEL MÉTODO LOCAL DISCONTINUO GALERKIN PARA LA ECUACIÓN DE FOKKER-PLANCK

    OpenAIRE

    Guillén Oviedo, Helen; Sequeira, Filander

    2016-01-01

    En este artículo se introduce y se analiza el método “Local Discontinuous Galerkin” (LDG) para la ecuación de Fokker-Planck concondiciones de contorno homogéneas. En particular, se emplea una formulación mixta en la cual las principales incógnitas corresponden al flujo de probabilidad y la función de densidad de probabilidad. Se aplican resultados conocidos provenientes del análisis funcional para establecer que el esquema discreto está bien puesto. Además, se proveen estimaciones de error par...

  5. Generalized Fokker Planck Equation with Time-Dependent Transport Coefficients and a Quadratic Potential: Its Application in Econophysics

    Science.gov (United States)

    Wang, Peng; Wang, Shun-Jin; Zhang, Hua

    2005-01-01

    In order to control non-equilibrium processes and to describe the fat-tail phenomenon in econophysics, we generalize the traditional the Fokker-Planck equation (FPE) by including a quadratic correlation potential, and by making the time-dependent drift-diffusion coefficients. We investigate the su(1,1)⊕u(1) algebraic structure and obtain the exact solutions to the generalized time-dependent FPE by using the algebraic dynamical method. Based on the exact solution, an important issue in modern econophysics, i.e. the fat-tail distribution in stock markets, is analysed.

  6. Generalized Fokker-Planck Equation with Time-Dependent Transport Coefficients and a Quadratic Potential: Its Application in Econophysics

    Institute of Scientific and Technical Information of China (English)

    WANG Peng; WANG Shun-Jin; ZHANG Hua

    2005-01-01

    @@ In order to control non-equilibrium processes and to describe the fat-tail phenomenon in econophysics, we generalize the traditional the Fokker-Planck equation (FPE) by including a quadratic correlation potential, and by making the time-dependent drift-diffusion coefficients. We investigate the su(1, 1) ~ u(1) algebraic structure and obtain the exact solutions to the generalized time-dependent FPE by using the algebraic dynamical method. Based on the exact solution, an important issue in modern econophysics, i.e. the fat-tail distribution in stock markets, is analysed.

  7. Poisson-Fokker-Planck model for biomolecules translocation through nanopore driven by electroosmotic flow

    Institute of Scientific and Technical Information of China (English)

    LIN XiaoHui; ZHANG ChiBin; GU Jun; JIANG ShuYun; YANG JueKuan

    2014-01-01

    A non-continuous electroosmotic flow model (PFP model) is built based on Poisson equation,Fokker-Planck equation and Navier-Stokse equation,and used to predict the DNA molecule translocation through nanopore.PFP model discards the continuum assumption of ion translocation and considers ions as discrete particles.In addition,this model includes the contributions of Coulomb electrostatic potential between ions,Brownian motion of ions and viscous friction to ion transportation.No ionic diffusion coefficient and other phenomenological parameters are needed in the PFP model.It is worth noting that the PFP model can describe non-equilibrium electroosmotic transportation of ions in a channel of a size comparable with the mean free path of ion.A modified clustering method is proposed for the numerical solution of PFP model,and ion current translocation through nanopore with a radius of 1 nm is simulated using the modified clustering method.The external electric field,wall charge density of nanopore,surface charge density of DNA,as well as ion average number density,influence the electroosmotic velocity profile of electrolyte solution,the velocity of DNA translocation through nanopore and ion current blockade.Results show that the ion average number density of electrolyte and surface charge density of nanopore have a significant effect on the translocation velocity of DNA and the ion current blockade.The translocation velocity of DNA is proportional to the surface charge density of nanopore,and is inversely proportional to ion average number density of electrolyte solution.Thus,the translocation velocity of DNAs can be controlled to improve the accuracy of sequencing by adjusting the external electric field,ion average number density of electrolyte and surface charge density of nanopore.Ion current decreases when the ion average number density is larger than the critical value and increases when the ion average number density is lower than the critical value.Our numerical

  8. Families of Fokker-Planck equations and the associated entropic form for a distinct steady-state probability distribution with a known external force field.

    Science.gov (United States)

    Asgarani, Somayeh

    2015-02-01

    A method of finding entropic form for a given stationary probability distribution and specified potential field is discussed, using the steady-state Fokker-Planck equation. As examples, starting with the Boltzmann and Tsallis distribution and knowing the force field, we obtain the Boltzmann-Gibbs and Tsallis entropies. Also, the associated entropy for the gamma probability distribution is found, which seems to be in the form of the gamma function. Moreover, the related Fokker-Planck equations are given for the Boltzmann, Tsallis, and gamma probability distributions.

  9. Plant trait-based models identify direct and indirect effects of climate change on bundles of grassland ecosystem services.

    Science.gov (United States)

    Lamarque, Pénélope; Lavorel, Sandra; Mouchet, Maud; Quétier, Fabien

    2014-09-23

    Land use and climate change are primary causes of changes in the supply of ecosystem services (ESs). Although the consequences of climate change on ecosystem properties and associated services are well documented, the cascading impacts of climate change on ESs through changes in land use are largely overlooked. We present a trait-based framework based on an empirical model to elucidate how climate change affects tradeoffs among ESs. Using alternative scenarios for mountain grasslands, we predicted how direct effects of climate change on ecosystems and indirect effects through farmers' adaptations are likely to affect ES bundles through changes in plant functional properties. ES supply was overall more sensitive to climate than to induced management change, and ES bundles remained stable across scenarios. These responses largely reflected the restricted extent of management change in this constrained system, which was incorporated when scaling up plot level climate and management effects on ecosystem properties to the entire landscape. The trait-based approach revealed how the combination of common driving traits and common responses to changed fertility determined interactions and tradeoffs among ESs.

  10. Analysis of linear and nonlinear conductivity of plasma-like systems on the basis of the Fokker-Planck equation

    Energy Technology Data Exchange (ETDEWEB)

    Trigger, S. A., E-mail: satron@mail.ru [Joint Institute for High Temperatures, Russian Academy of Sciences, 13/19, Izhorskaia Str., Moscow 125412 (Russian Federation); Institut für Physik, Humboldt-Universität zu Berlin, Newtonstraße 15, D-12489 Berlin (Germany); Eindhoven University of Technology, P.O. Box 513, MB 5600 Eindhoven (Netherlands); Ebeling, W. [Institut für Physik, Humboldt-Universität zu Berlin, Newtonstraße 15, D-12489 Berlin (Germany); Heijst, G. J. F. van; Litinski, D. [Eindhoven University of Technology, P.O. Box 513, MB 5600 Eindhoven (Netherlands)

    2015-04-15

    The problems of high linear conductivity in an electric field, as well as nonlinear conductivity, are considered for plasma-like systems. First, we recall several observations of nonlinear fast charge transport in dusty plasma, molecular chains, lattices, conducting polymers, and semiconductor layers. Exploring the role of noise we introduce the generalized Fokker-Planck equation. Second, one-dimensional models are considered on the basis of the Fokker-Planck equation with active and passive velocity-dependent friction including an external electrical field. On this basis, it is possible to find the linear and nonlinear conductivities for electrons and other charged particles in a homogeneous external field. It is shown that the velocity dependence of the friction coefficient can lead to an essential increase of the electron average velocity and the corresponding conductivity in comparison with the usual model of constant friction, which is described by the Drude-type conductivity. Applications including novel forms of controlled charge transfer and non-Ohmic conductance are discussed.

  11. Isotropic Forms of Dynamics in the Relativistic Direct Interaction Theory

    CERN Document Server

    Duviryak, A A; Tretyak, V I

    1998-01-01

    The Lagrangian relativistic direct interaction theory in the various forms of dynamics is formulated and its connections with the Fokker-type action theory and with the constrained Hamiltonian mechanics are established. The motion of classical two-particle system with relativistic direct interaction is analysed within the framework of isotropic forms of dynamics in the two- and four-dimensional space-time. Some relativistic exactly solvable quantum-mechanical models are also discussed.

  12. The impact of the Directive on Payment Services in the Internal Market on Danish and Belgium Legislation on Fraudulent Payment Transactions

    DEFF Research Database (Denmark)

    Henschel, Rene Franz; Steenot, Reinhard

    2009-01-01

    In December 2007, the European Directive on payment services in the internal market was published in the Official Journal. This Directive, which has to be transposed into national legislation before the 1st November 2009, contains many rules on payments, including rules on the allocation of liabi......In December 2007, the European Directive on payment services in the internal market was published in the Official Journal. This Directive, which has to be transposed into national legislation before the 1st November 2009, contains many rules on payments, including rules on the allocation...... and Belgian legislation. More specifically, we will examine how the rules incorporated in the European Directive, which is based on the principle of maximum harmonization, are implemented in Belgium and Denmark, whether the implementations are in accordance with the Directive and finally, whether...... the Directive and the implementations reduce or strengthen the protection of payment service users in the two countries and promotes the creation of a common internal market for payment services...

  13. Exploring the Capacity of Water Framework Directive Indices to Assess Ecosystem Services in Fluvial and Riparian Systems: Towards a Second Implementation Phase

    Science.gov (United States)

    Vidal-Abarca, M. R.; Santos-Martín, F.; Martín-López, B.; Sánchez-Montoya, M. M.; Suárez Alonso, M. L.

    2016-06-01

    We explored the capacity of the biological and hydromorphological indices used in the Water Framework Directive (WFD) to assess ecosystem services by evaluating the ecological status of Spanish River Basins. This analysis relies on an exhaustive bibliography review which showed scientific evidence of the interlinkages between some ecosystem services and different hydromorphological and biological elements which have been used as indices in the WFD. Our findings indicate that, of a total of 38 ecosystem services analyzed, biological and hydromorphological indices can fully evaluate four ecosystem services. In addition, 18 ecosystem services can be partly evaluated by some of the analyzed indices, while 11 are not related with the indices. While Riparian Forest Quality was the index that was able to assess the largest number of ecosystem services ( N = 12), the two indices of macrophytes offered very poor guarantees. Finally, biological indices related to diatoms and aquatic invertebrates and the Fluvial Habitat Index can be related with 7, 6, and 6 ecosystem services, respectively. Because the WFD indices currently used in Spain are not able to assess most of the ecosystem services analyzed, we suggest that there is potential to develop the second phase of the WFD implementation taking this approach into consideration. The incorporation of the ecosystem services approach into the WFD could provide the framework for assess the impacts of human activities on the quality of fluvial ecosystems and could give insights for water and watershed management in order to guarantee the delivery of multiple ecosystem services.

  14. Fokker-Planck/Ray Tracing for Electron Bernstein and Fast Wave Modeling in Support of NSTX

    Energy Technology Data Exchange (ETDEWEB)

    Harvey, R. W. [CompX, Del Mar, CA (United States)

    2009-11-12

    This DOE grant supported fusion energy research, a potential long-term solution to the world's energy needs. Magnetic fusion, exemplified by confinement of very hot ionized gases, i.e., plasmas, in donut-shaped tokamak vessels is a leading approach for this energy source. Thus far, a mixture of hydrogen isotopes has produced 10's of megawatts of fusion power for seconds in a tokamak reactor at Princeton Plasma Physics Laboratory in New Jersey. The research grant under consideration, ER54684, uses computer models to aid in understanding and projecting efficacy of heating and current drive sources in the National Spherical Torus Experiment, a tokamak variant, at PPPL. The NSTX experiment explores the physics of very tight aspect ratio, almost spherical tokamaks, aiming at producing steady-state fusion plasmas. The current drive is an integral part of the steady-state concept, maintaining the magnetic geometry in the steady-state tokamak. CompX further developed and applied models for radiofrequency (rf) heating and current drive for applications to NSTX. These models build on a 30 year development of rf ray tracing (the all-frequencies GENRAY code) and higher dimensional Fokker-Planck rf-collisional modeling (the 3D collisional-quasilinear CQL3D code) at CompX. Two mainline current-drive rf modes are proposed for injection into NSTX: (1) electron Bernstein wave (EBW), and (2) high harmonic fast wave (HHFW) modes. Both these current drive systems provide a means for the rf to access the especially high density plasma--termed high beta plasma--compared to the strength of the required magnetic fields. The CompX studies entailed detailed modeling of the EBW to calculate the efficiency of the current drive system, and to determine its range of flexibility for driving current at spatial locations in the plasma cross-section. The ray tracing showed penetration into NSTX bulk plasma, relatively efficient current drive, but a limited ability to produce current over

  15. ‘Comparing social service system in Scandinavia and Korea and the direction of future development in Korea.’

    DEFF Research Database (Denmark)

    Abrahamson, Peter

    2014-01-01

    Social services as defined here are relatively new phenomena unlike areas such as education or health care. Establishing social care services for citizens on a collective basis is hence an indica-tion of a mature or developed society. Both Korea and Denmark have opted for a universal approach...... on public providers. A universal approach is motivated by avoiding the stigma and shame usually associated with receiving public assistance. To avoid that the words of Richard Titmuss come true that services for the poor tend to be poor services, contemporary social services are made available for all needy...... citizens, and to avoid that middle and upper class citizens opt out and create their own alternative systems publicly organized ser-vices must have a reasonably high level of quality. Administration of social services are usually located at the municipal level while health care services are organized...

  16. The Impact of Direct and Indirect of internal marketing on service quality and mediating role of OCB CASE: Iran Insurance Company

    Directory of Open Access Journals (Sweden)

    Hassan Ghorbani

    2013-11-01

    Full Text Available Internal Marketing is attracting, developing, motivating, and retaining qualified employees through job-products that satisfy their needs. Organizational citizenship behavior is conceptualized as synonymous with the concept of contextual performance, defined as ‘performance that supports the social and psychological environment in which task performance takes place. Service quality is defined as how well the service meets or exceeds the customers’ expectations on a consistent basis. The conceptual framework presented here derives from a thorough analytical and critical review of the literature on the relationship between internal marketing and the services quality, the role of organizational citizenship behaviors among internal marketing and the services quality and also the impact of internal marketing on the service quality. This study uses a Structure Equation Model (SEM analysis to examine and measure five categories which reflect most of the employees’ discretionary behaviors that can influence the customer-employee interaction facet of Service quality. The statistical population consists of customers who have used services offered by Iran Insurance Company in Isfahan. Random sampling method has been applied to select the appropriate sample. The examinations were done through 190 available questionnaires. Results based on SEM outputs demonstrate acceptance and confirmation of all studied factors. These findings indicate that Internal Marketing has a positive effect on organizational citizenship behavior, Organizational citizenship behavior has a positive effect on service quality and Internal Marketing has a positive and direct effect on service quality.

  17. 77 FR 12163 - Airworthiness Directives; 328 Support Services GmbH (Type Certificate Previously Held by AvCraft...

    Science.gov (United States)

    2012-02-29

    ... Services GmbH (Type Certificate Previously Held by AvCraft Aerospace GmbH; Fairchild Dornier GmbH; Dornier... Services GmbH (Type Certificate Previously Held by AvCraft Aerospace GmbH; Fairchild Dornier GmbH; Dornier...: 2012-04-06 328 Support Services GmbH (Type Certificate Previously Held by AvCraft Aerospace...

  18. Grid-free powder averages: on the applications of the Fokker-Planck equation to solid state NMR

    CERN Document Server

    Edwards, Luke J; Nevzorov, A A; Concistre, M; Pileio, G; Kuprov, Ilya

    2013-01-01

    We demonstrate that Fokker-Planck equations in which spatial coordinates are treated on the same conceptual level as spin coordinates yield a convenient formalism for treating magic angle spinning NMR experiments. In particular, time dependence disappears from the background Hamiltonian (sample spinning is treated as an interaction), spherical quadrature grids are avoided completely (coordinate distributions are a part of the formalism) and relaxation theory with any linear diffusion operator is easily adopted from the Stochastic Liouville Equation theory. The proposed formalism contains Floquet theory as a special case. The elimination of the spherical averaging grid comes at the cost of increased matrix dimensions, but we show that this can be mitigated by the use of state space restriction and tensor train techniques. It is also demonstrated that low correlation order basis sets apparently give accurate answers in powder-averaged MAS simulations, meaning that polynomially scaling simulation algorithms do e...

  19. Long-Time Dynamic Response and Stochastic Resonance of Subdiffusive Overdamped Bistable Fractional Fokker-Planck Systems

    Institute of Scientific and Technical Information of China (English)

    KANG Yan-Mei; JIANG Yao-Lin

    2008-01-01

    To explore the influence of anomalous diffusion on stochastic resonance (SR) more deeply and effectively, the method of moments is extended to subdiffusive overdamped bistable fractional Fokker-Planck systems for calculating the long-time linear dynamic response. It is found that the method of moments attains high accuracy with the truncation order N = 10, and in normal diffusion such obtained spectral amplification factor (SAF) of the first-order harmonic is also confirmed by stochastic simulation. Observing the SAF of the odd-order harmonics we find some interesting results, i.e. for smaller driving frequency the decrease of subdiffusion exponent inhibits the stochastic resonance (SR), while for larger driving frequency the decrease of subdiffusion exponent enhances the second SR peak, but the first one vanishes and a double SR is induced in the third-order harmonic at the same time. These observations suggest that the anomalous diffusion has important influence on the bistable dynamics.

  20. Solution of mode coupling in step-index optical fibers by the Fokker-Planck equation and the Langevin equation.

    Science.gov (United States)

    Savović, Svetislav; Djordjevich, Alexandar

    2002-05-20

    The power-flow equation is approximated by the Fokker-Planck equation that is further transformed into a stochastic differential (Langevin) equation, resulting in an efficient method for the estimation of the state of mode coupling along step-index optical fibers caused by their intrinsic perturbation effects. The inherently stochastic nature of these effects is thus fully recognized mathematically. The numerical integration is based on the computer-simulated Langevin force. The solution matches the solution of the power-flow equation reported previously. Conceptually important steps of this work include (i) the expression of the power-flow equation in a form of the diffusion equation that is known to represent the solution of the stochastic differential equation describing processes with random perturbations and (ii) the recognition that mode coupling in multimode optical fibers is caused by random perturbations.

  1. NORSE: A solver for the relativistic non-linear Fokker-Planck equation for electrons in a homogeneous plasma

    Science.gov (United States)

    Stahl, A.; Landreman, M.; Embréus, O.; Fülöp, T.

    2017-03-01

    Energetic electrons are of interest in many types of plasmas, however previous modeling of their properties has been restricted to the use of linear Fokker-Planck collision operators or non-relativistic formulations. Here, we describe a fully non-linear kinetic-equation solver, capable of handling large electric-field strengths (compared to the Dreicer field) and relativistic temperatures. This tool allows modeling of the momentum-space dynamics of the electrons in cases where strong departures from Maxwellian distributions may arise. As an example, we consider electron runaway in magnetic-confinement fusion plasmas and describe a transition to electron slide-away at field strengths significantly lower than previously predicted.

  2. NORSE: A solver for the relativistic non-linear Fokker-Planck equation for electrons in a homogeneous plasma

    CERN Document Server

    Stahl, A; Embréus, O; Fülöp, T

    2016-01-01

    Energetic electrons are of interest in many types of plasmas, however previous modelling of their properties have been restricted to the use of linear Fokker-Planck collision operators or non-relativistic formulations. Here, we describe a fully non-linear kinetic-equation solver, capable of handling large electric-field strengths (compared to the Dreicer field) and relativistic temperatures. This tool allows modelling of the momentum-space dynamics of the electrons in cases where strong departures from Maxwellian distributions may arise. As an example, we consider electron runaway in magnetic-confinement fusion plasmas and describe a transition to electron slide-away at field strengths significantly lower than previously predicted.

  3. Time-Dependent Solutions to the Fokker-Planck Equation of Maximum Reduced Air-Sea Coupling Climate Model

    Institute of Scientific and Technical Information of China (English)

    FENG Guolin; DONG Wenjie; GAO Hongxing

    2005-01-01

    The time-dependent solution of reduced air-sea coupling stochastic-dynamic model is accurately obtained by using the Fokker-Planck equation and the quantum mechanical method. The analysis of the timedependent solution suggests that when the climate system is in the ground state, the behavior of the system appears to be a Brownian movement, thus reasoning the foothold of Hasselmann's stochastic climatic model;when the system is in the first excitation state, the motion of the system exhibits a form of time-decaying,or under certain condition a periodic oscillation with the main period being 2.3 yr. At last, the results are used to discuss the impact of the doubling of carbon dioxide on climate.

  4. Participatory design facilitates Person Centred Nursing in service improvement with older people: a secondary directed content analysis.

    Science.gov (United States)

    Wolstenholme, Daniel; Ross, Helen; Cobb, Mark; Bowen, Simon

    2017-05-01

    To explore, using the example of a project working with older people in an outpatient setting in a large UK NHS Teaching hospital, how the constructs of Person Centred Nursing are reflected in interviews from participants in a Co-design led service improvement project. Person Centred Care and Person Centred Nursing are recognised terms in healthcare. Co-design (sometimes called participatory design) is an approach that seeks to involve all stakeholders in a creative process to deliver the best result, be this a product, technology or in this case a service. Co-design practice shares some of the underpinning philosophy of Person Centred Nursing and potentially has methods to aid in Person Centred Nursing implementation. The research design was a qualitative secondary Directed analysis. Seven interview transcripts from nurses and older people who had participated in a Co-design led improvement project in a large teaching hospital were transcribed and analysed. Two researchers analysed the transcripts for codes derived from McCormack & McCance's Person Centred Nursing Framework. The four most expressed codes were as follows: from the pre-requisites: knowing self; from care processes, engagement, working with patient's beliefs and values and shared Decision-making; and from Expected outcomes, involvement in care. This study describes the Co-design theory and practice that the participants responded to in the interviews and look at how the co-design activity facilitated elements of the Person Centred Nursing framework. This study adds to the rich literature about using emancipatory and transformational approaches to Person Centred Nursing development, and is the first study exploring explicitly the potential contribution of Co-design to this area. Methods from Co-design allow older people to contribute as equals in a practice development project, co-design methods can facilitate nursing staff to engage meaningfully with older participants and develop a shared

  5. Burnout in Direct Care Staff in Intellectual Disability Services: A Factor Analytic Study of the Maslach Burnout Inventory

    Science.gov (United States)

    Hastings, R. P.; Horne, S.; Mitchell, G.

    2004-01-01

    There is gathering research interest in the well-being of staff working in services for people with intellectual disability (ID), including the assessment of burnout and its correlates. However, no previous studies have considered the applicability of the main three dimensions of burnout to staff in ID services. Data were analysed from two samples…

  6. Study of the directions of service in men’s volleyball high level Estudio de la dirección del saque en la Superliga Masculina de Voleibol

    Directory of Open Access Journals (Sweden)

    J. J. Molina

    2010-09-01

    Full Text Available

    The aim of this study was to design and to apply an observation instrument of the service in high level men’s volleyball. This instrument was trying to differentiate the destination zones of service near to the side lines and the end line, and the directions of  services related to the same ones, trying to verify if the destination zone and direction were associating of significant and positive form efficiently. 1891 services were considered in this study, all team services of men’s volleyball high level realized during the season 2004/2005. The variables of study were origin zone, destination zone, direction and efficiency of services. The results showed that more 20% of services were realized to less than one meter of the end line, being the services realized near to the side lines. The direct point service was associated significantly and positively with services realized near to the side lines and the end line of the court, and with directions of side line services and service at the bottom of the line.
    Key words: volleyball, service, destination, direction, efficacy.

    El objetivo del presente estudio fue diseñar y aplicar un instrumento para la observación del saque en voleibol masculino de alto nivel. Mediante dicho instrumento se pretendía diferenciar fundamentalmente las zonas de destino del saque cercanas a las líneas laterales y línea de fondo, así como las direcciones de saques relacionadas con las mismas, tratando de comprobar si las citadas zonas de  destino y dirección se asociaban de forma significativa y positiva con los valores más óptimos de eficacia del saque. La muestra estuvo constituida por 1891 acciones de saque, el total de acciones de saque realizadas por un equipo de Superliga Masculina de Voleibol durante la temporada 2004/2005. Las variables de estudio fueron: zona de origen, zona de destino, dirección y eficacia, del

  7. Properties of the Langevin and Fokker-Planck equations for scalar fields and their application to the dynamics of second order phase transitions

    CERN Document Server

    Bettencourt, L M A

    2001-01-01

    I consider several Langevin and Fokker-Planck classes of dynamics for scalar field theories in contact with a thermal bath at temperature T. These models have been applied recently in the numerical description of the dynamics of second order phase transitions and associated topological defect formation as well as in other studies of these critical phenomena. Closed form solutions of the Fokker-Planck equation are given for the harmonic potential and a dynamical mean-field approximation is developed. These methods allow for an analytical discussion of the behavior of the theories in several circumstances of interest such as critical slowing down at a second order transition and the development of spinodal instabilities. These insights allow for a more detailed understanding of several numerical studies in the literature.

  8. Volatilidad estocástica y la ecuación de Fokker-Planck: parámetros dependientes del tiempo y filtro de Kalman

    OpenAIRE

    Claudia Estrella Castillo Ramírez

    2010-01-01

    This paper is aimed to examine the relationship between stochastic volatility and the stationary probability density through the Fokker-Planck equation. The proposed stochastic process to lead volatility extends the research from Grajales-Correa, Pérez-Ramírez and Venegas-Martínez (2008), and Oztukel and Wilmott (1998), so that the parameters of the volatility process are dependent on time, in which case the Kalman’s (1960) filter should be used for estimation purposes

  9. Full-wave and Fokker Planck analysis of ICRF heating experiments in the Alcator C-Mod tokamak

    Energy Technology Data Exchange (ETDEWEB)

    Bonoli, P.T.; Golovato, S.; Porkolab, M.; Takase, Y. [MIT Plasma Fusion Center, Cambridge, MA (United States)

    1996-12-31

    The Alcator C-Mod device is a high field, high density, shaped tokamak with parameters a = 0.22 m, R{sub 0} = 0.67 m, B{sub 0} {le} 9.0 T, {kappa} {le} 1.8, {delta} {le} 0.8, and 1.0 x 10{sup 20} m{sup -3} n{sub e} (0) {le} 1.0 x 10{sup 21} m{sup -3}. Four megawatt of ICRF power is available at 80 MHz. The wide operating range in magnetic field makes several heating schemes possible: (i) Second harmonic heating of hydrogen (f{sub 0} = 2f{sub CH}) at 2.6 T in (D-H); (ii) Fundamental heating of (H) (f{sub 0} = f{sub CH}) at 5.3T in a D-(H) plasma; and (iii) Fundamental heating of ({sup 3}He) (f{sub 0} = f{sub C{sup 3}He}) at 7.9 T in a D-({sup 3}He) plasma. The most successful heating regime to date has been (H)-minority heating at 5.3 T. Pellet enhanced performance (PEP) modes have also been achieved in C-Mod in D-(H) at 5.3 T and in D-({sup 3}He) at 7.9 T, with a combination of intense ICRF heating and Li-pellet injection. A variety of numerical models are used to analyze these heating schemes. A 1-D full-wave code (FELICE) is used to study {open_quotes}single pass{close_quotes} damping of the ICRF wavefront and damping of mode-converted ion Bernstein waves. A toroidal full-wave code (FISIC) is used to study interference and focussing effects of the ICRF waves as well as damping of the ICRF power upon multiple passes of the ICRF wavefront. A combined bounce averaged Fokker Planck and toroidal full-wave code (FPPRF) is used to study the ion tail formation, orbit losses, and the power partition of the ICRF tail to the background electrons and ions. Full-wave and Fokker Planck analyses confirm the strong single pass absorption of the ICRF power in D-(H) at 5.3 T. Analysis of PEP-mode plasmas in D-({sup 3}He) indicates improved wave focussing and {sup 3}He-cyclotron absorption of the ICRF waves relative to L-mode. A dramatic increase in the transfer of {sup 3}He tail power to the background deuterium is also found for PEP-mode plasmas.

  10. A combination between Laplace transformation technique and numerical approximations to the Fokker-Planck equation solutions; Uma combinacao entre a tecnica da transformada de Laplace e aproximacoes numericas na solucao da equacao de Fokker-Planck

    Energy Technology Data Exchange (ETDEWEB)

    Monticelli, Cintia O. [Centro Universitario FEEVALE/PROMEC-UFRGS, Novo Hamburgo, RS (Brazil)]. E-mail: cintiam@feevale.br; Wortmann, Sergio; Segatto, Cynthia F. [Rio Grande do Sul Univ., Porto Alegre, RS (Brazil). Inst. de Matematica]. E-mail: wortmann@mat.ufrgs.br; cynthia@mat.ufrgs.br

    2005-07-01

    In this work is obtained a hybrid solution to the Fokker-Planck equation with energy dependency, very used in ion implantation problems. The main idea relies on the application of Laplace transform in the energy variable, and finite-difference in the spatial variable and in the angular variable. This procedure leads to a symbolic matrix problem for the transformed energy. To solve this system, is needed to do the Laplace inverse of the (sI+A) matrix, where s is a complex parameter, I is the identity matrix and A is a square matrix that was proceeded from the finite-difference in the spatial variable and in the angular variable. The matrix A is not defective, then is taken decomposition of A in a sum of two others matrices, where one is defective. It leads a iterative inversion method, similar the source fixed method combined with the diagonalization method, then is obtained the values to the angular flux. Hereafter we can to determine the energy deposited into the electronic system and in the nuclear system of the target. To comprove the results obtained, the simulation of implantation of B into Si at energies ranging from 1 KeV to 50 MeV was carried out and compared with the results by software SRIM2003. (author)

  11. A fully-neoclassical finite-orbit-width version of the CQL3D Fokker-Planck code

    Science.gov (United States)

    Petrov, Yu V.; Harvey, R. W.

    2016-11-01

    The time-dependent bounce-averaged CQL3D flux-conservative finite-difference Fokker-Planck equation (FPE) solver has been upgraded to include finite-orbit-width (FOW) capabilities which are necessary for an accurate description of neoclassical transport, losses to the walls, and transfer of particles, momentum, and heat to the scrape-off layer. The FOW modifications are implemented in the formulation of the neutral beam source, collision operator, RF quasilinear diffusion operator, and in synthetic particle diagnostics. The collisional neoclassical radial transport appears naturally in the FOW version due to the orbit-averaging of local collision coefficients coupled with transformation coefficients from local (R, Z) coordinates along each guiding-center orbit to the corresponding midplane computational coordinates, where the FPE is solved. In a similar way, the local quasilinear RF diffusion terms give rise to additional radial transport of orbits. We note that the neoclassical results are obtained for ‘full’ orbits, not dependent on a common small orbit-width approximation. Results of validation tests for the FOW version are also presented.

  12. Global well-posedness and large time behavior of classical solutions to the Vlasov-Fokker-Planck and magnetohydrodynamics equations

    Science.gov (United States)

    Jiang, Peng

    2017-02-01

    We are concerned with the global well-posedness of the fluid-particle system which describes the evolutions of disperse two-phase flows. The system consists of the Vlasov-Fokker-Planck equation for the dispersed phase (particles) coupled to the compressible magnetohydrodynamics equations modelling a dense phase (fluid) through the friction forcing. Global well-posedness of the Cauchy problem is established in perturbation framework, and rates of convergence of solutions toward equilibrium, which are algebraic in the whole space and exponential on torus, are also obtained under some additional conditions on initial data. The existence of global solution and decay rate of the solution are proved based on the classical energy estimates and Fourier multiplier technique, which are considerably complicated and some new ideas and techniques are thus required. Moreover, it is shown that neither shock waves nor vacuum and concentration in the solution are developed in a finite time although there is a complex interaction between particle and fluid.

  13. A Fokker-Planck operator for the emission and absorption of electron plasma waves in a magnetized plasma

    Energy Technology Data Exchange (ETDEWEB)

    Ware, A.A.

    1993-03-01

    For slab geometry the perturbation of the electrostatic wake of a superthermal test electron in a magnetized plasma ({omega}{sub ce} {much_gt} {omega}{sub pe}) due to moderate magnetic shear is determined. Allowing for the spherical symmetry of the surfaces of constant phase to the rear of the test electron, the ``resonant`` field electrons causing the damping of the wave in a magnetic surface at a distance x from the test electron are those with parallel velocity {upsilon}{prime}{parallel} = {upsilon}{parallel} cos {beta} cos({beta} + {gamma}). Here {beta} is the angle between the emitted ray and B(0), {gamma} is the angle between B(0) and B(x) and {upsilon}{parallel} is the velocity of the test electron. As a result the damping in the WKB approximation for the wave emission is a function of both the angle of emission and {gamma}. A Fokker-Planck equation is derived for the rate of change of the electron distribution function (f) due to the emission and absorption of the waves under these conditions. f is assumed approximately Maxwellian for {upsilon}{parallel} > {upsilon}{sub T}.

  14. A Fokker-Planck operator for the emission and absorption of electron plasma waves in a magnetized plasma

    Energy Technology Data Exchange (ETDEWEB)

    Ware, A.A.

    1993-03-01

    For slab geometry the perturbation of the electrostatic wake of a superthermal test electron in a magnetized plasma ([omega][sub ce] [much gt] [omega][sub pe]) due to moderate magnetic shear is determined. Allowing for the spherical symmetry of the surfaces of constant phase to the rear of the test electron, the resonant'' field electrons causing the damping of the wave in a magnetic surface at a distance x from the test electron are those with parallel velocity [upsilon][prime][parallel] = [upsilon][parallel] cos [beta] cos([beta] + [gamma]). Here [beta] is the angle between the emitted ray and B(0), [gamma] is the angle between B(0) and B(x) and [upsilon][parallel] is the velocity of the test electron. As a result the damping in the WKB approximation for the wave emission is a function of both the angle of emission and [gamma]. A Fokker-Planck equation is derived for the rate of change of the electron distribution function (f) due to the emission and absorption of the waves under these conditions. f is assumed approximately Maxwellian for [upsilon][parallel] > [upsilon][sub T].

  15. Kinetic Simulations - Oshun (Vlasov-Fokker-Planck) and PIC (Osiris) - Physics and Open Source Software In The UCLA PICKSE Initiative

    Science.gov (United States)

    Tableman, Adam; Tzoufras, Michail; Fonseca, Ricardo; Mori, W. B.

    2016-10-01

    We present physics results and general updates for two plasma kinetic simulation codes developed under the UCLA PICKSE initiative. We also discuss the issues around making these codes open source such that they can be used (and contributed too) by a large audience. The first code discussed is Oshun - a Vlasov-Fokker-Planck (VFP) code. Recent simulations with the VFP code OSHUN will be presented for all of the aforementioned problems. The algorithmic improvements that have facilitated these studies will be also be discussed. The second code discussed is the PIC code Osiris. Osiris is a widely respected code used in hundreds of papers. Osiris was first developed for laser-plasma interactions but has grown into a robust framework covering most areas of plasma research. One defining feature of Osiris is that it is highly optimized for a variety of hardware configurations and scales linearly over 1 million + CPU nodes. We will discuss the recently released version 4.0 written in modern, fully-object oriented FORTRAN. Funding provided by Grants NSF ACI 1339893 and DOE DE NA 0001833.

  16. AN ASYMPTOTIC PRESERVING SCHEME FOR THE VLASOV-POISSON-FOKKER-PLANCK SYSTEM IN THE HIGH FIELD REGIME

    Institute of Scientific and Technical Information of China (English)

    Shi Jin; Li Wang

    2011-01-01

    The Vlasov-Poisson-Fokker-Planck system under the high field scaling describes the Brownian motion of a large system of particles in a surrounding bath where both collision and field effects (electrical or gravitational) are dominant. Numerically solving this system becomes challenging due to the stiff collision term and stiff nonlinear transport term with respect to the high field.We present a class of Asymptotic-Preserving scheme which is efficient in the high field regime,namely,large time steps and coarse meshes can be used,yet the high field limit is still captured.The idea is to combine the two stiff terms and treat them implicitly.Thanks to the linearity of the collision term,using the discretization described in [Jin S,Yan B.J.Comp.Phys.,2011,230:6420-6437]we only need to invert a symmetric matrix.This method can be easily extended to higher dimensions.The method is shown to be positive,stable,mass and asymptotic preserving.Numerical experiments validate its efficiency in both kinetic and high field regimes including mixing regimes.

  17. A Services Marketing Perspective on E-Retailing: Implications for E-Retailers and Directions for Further Research.

    Science.gov (United States)

    Kolesar, Mark B.; Galbraith, R. Wayne

    2000-01-01

    Applying a body of theory and empirical research in the study of customer loyalty drivers in the services sector, this paper sets out a number of marketing and Web site design implications for e-retailers. It then suggests several means by which e-retailers can manage customer perceptions to increase sales and develop greater customer loyalty.…

  18. Teacher Efficacy and Career Indecision among Pre-Service Teachers: A Model of Direct and Indirect Effects

    Science.gov (United States)

    Slone, Mary Beth; Hancock, Mary D.

    2008-01-01

    The present study investigates, through path analytic techniques, the influence of teacher efficacy on the career indecision of pre-service teachers. The sample consists of 305 students enrolled in Teacher Education programs at two southeastern universities. Results indicate that general teacher efficacy and career self-efficacy have significant…

  19. A pragmatic randomised controlled trial of 'PhysioDirect' telephone assessment and advice services for patients with musculoskeletal problems: economic evaluation.

    Science.gov (United States)

    Hollinghurst, Sandra; Coast, Joanna; Busby, John; Bishop, Annette; Foster, Nadine E; Franchini, Angelo; Grove, Sean; Hall, Jeanette; Hopper, Cherida; Kaur, Surinder; Montgomery, Alan A; Salisbury, Chris

    2013-10-03

    To compare the cost-effectiveness of PhysioDirect with usual physiotherapy care for patients with musculoskeletal problems. (1) Cost-consequences comparing cost to the National Health Service (NHS), to patients, and the value of lost productivity with a range of outcomes. (2) Cost-utility analysis comparing cost to the NHS with Quality-Adjusted Life Years (QALYs). Four physiotherapy services in England. Adults (18+) referred by their general practitioner or self-referred for physiotherapy. PhysioDirect involved telephone assessment and advice followed by face-to-face care if needed. Usual care patients were placed on a waiting list for face-to-face care. Primary clinical outcome: physical component summary from the SF-36v2 at 6 months. Also included in the cost-consequences: Measure Yourself Medical Outcomes Profile; a Global Improvement Score; response to treatment; patient satisfaction; waiting time. Outcome for the cost-utility analysis: QALYs. 2249 patients took part (1506 PhysioDirect; 743 usual care). (1) Cost-consequences: there was no evidence of a difference between the two groups in the cost of physiotherapy, other NHS services, personal costs or value of time off work. Outcomes were also similar. (2) Cost-utility analysis based on complete cases (n=1272). Total NHS costs, including the cost of physiotherapy were higher in the PhysioDirect group by £19.30 (95% CI -£37.60 to £76.19) and there was a QALY gain of 0.007 (95% CI -0.003 to 0.016). The incremental cost-effectiveness ratio was £2889 and the net monetary benefit at λ=£20 000 was £117 (95% CI -£86 to £310). PhysioDirect may be a cost-effective alternative to usual physiotherapy care, though only with careful management of staff time. Physiotherapists providing the service must be more fully occupied than was possible under trial conditions: consideration should be given to the scale of operation, opening times of the service and flexibility in the methods used to contact patients.

  20. The History of Mental Health Services in Modern England: Practitioner Memories and the Direction of Future Research.

    Science.gov (United States)

    Turner, John; Hayward, Rhodri; Angel, Katherine; Fulford, Bill; Hall, John; Millard, Chris; Thomson, Mathew

    2015-10-01

    Writing the recent history of mental health services requires a conscious departure from the historiographical tropes of the nineteenth and twentieth centuries which have emphasised the experience of those identified (and legally defined) as lunatics and the social, cultural, political, medical and institutional context of their treatment. A historical narrative structured around rights (to health and liberty) is now complicated by the rise of new organising categories such as 'costs', 'risks', 'needs' and 'values'. This paper, drawing on insights from a series of witness seminars attended by historians, clinicians and policymakers, proposes a programme of research to place modern mental health services in England and Wales in a richer historical context. Historians should recognise the fragmentation of the concepts of mental illness and mental health need, acknowledge the relationship between critiques of psychiatry and developments in other intellectual spheres, place the experience of the service user in the context of wider socio-economic and political change, understand the impacts of the social perception of 'risk' and of moral panic on mental health policy, relate the politics of mental health policy and resources to the general determinants of institutional change in British central and local government, and explore the sociological and institutional complexity of the evolving mental health professions and their relationships with each other and with their clients. While this is no small challenge, it is perhaps the only way to avoid the perpetuation of 'single-issue mythologies' in describing and accounting for change.

  1. Physician staffed helicopter emergency medical service dispatch via centralised control or directly by crew – case identification rates and effect on the Sydney paediatric trauma system

    Directory of Open Access Journals (Sweden)

    Garner Alan A

    2012-12-01

    Full Text Available Abstract Background Severe paediatric trauma patients benefit from direct transport to dedicated Paediatric Trauma Centres (PTC. Parallel case identification systems utilising paramedics from a centralised dispatch centre versus the crew of a physician staffed Helicopter Emergency Medical Service (HEMS allowed comparison of the two systems for case identification rates and subsequent timeliness of direct transfer to a PTC. Methods Paediatric trauma patients over a two year period from the Sydney region with an Injury Severity Score (ISS > 15 were retrospectively identified from a state wide trauma registry. Overall paediatric trauma system performance was assessed by comparisons of the availability of the physician staffed HEMS for patient characteristics, transport mode (direct versus indirect and the times required for the patient to arrive at the paediatric trauma centre. The proportion of patients transported directly to a PTC was compared between the times that the HEMS service was available versus the time that it was unavailable to determine if the HEMS system altered the rate of direct transport to a PTC. Analysis of variance was used to compare the identifying systems for various patient characteristics when the HEMS was available. Results Ninety nine cases met the inclusion criteria, 44 when the HEMS system was operational. Patients identified for physician response by the HEMS system were significantly different to those that were not identified with higher median ISS (25 vs 18, p = 0.011, and shorter times to PTC (67 vs 261mins, p = 0.015 and length of intensive care unit stays (2 vs 0 days, p = 0.045. Of the 44 cases, 21 were not identified, 3 were identified by the paramedic system and 20 were identified by the HEMS system, (P  Conclusions Physician staffed HEMS crew dispatch is significantly more likely to identify cases of severe paediatric trauma and is associated with a greater proportion of transports

  2. Estimations hypoelliptiques globales et compacit\\'e de la r\\'esolvante Estimations hypoelliptiques globales et compacit\\'e de la r\\'esolvante pour des op\\'erateurs de Fokker-Planck ou des laplaciens de Witten

    CERN Document Server

    Helffer, B

    2004-01-01

    Ces derni\\`eres ann\\'ees, les estimations hypoelliptiques ont connu une nouvelle jeunesse en liaison avec des questions provenant de la th\\'eorie cin\\'etique des gaz. Dans cette direction de nombreux auteurs ont en effet eu besoin de d\\'emontrer des estimations maximales pour en d\\'eduire la compacit\\'e de l'op\\'erateur de Fokker-Planck et avoir des estimations sur la r\\'esolvante permettant d'aborder la question du retour \\`a l'\\'equilibre. Dans un article tr\\`es r\\'ecent, F.~H\\'erau et F.~Nier (inspir\\'es par des calculs explicites du livre de Risken) ont mis en \\'evidence les liens \\'etroits entre ces questions et des questions analogues pour un laplacien de Witten. L'\\'etude de ces liens est poursuivie et syst\\'ematis\\'ee dans un livre en pr\\'eparation \\'ecrit en collaboration avec F.~Nier dont nous allons pr\\'esenter quelques aspects ici en pr\\'esentant parfois un \\'eclairage diff\\'erent sur un probl\\`eme qui laisse encore beaucoup de conjectures non r\\'esolues.

  3. The impact of direct provision accommodation for asylum seekers on organisation and delivery of local primary care and social care services: A case study

    Science.gov (United States)

    2011-01-01

    Background Many western countries have policies of dispersal and direct provision accommodation (state-funded accommodation in an institutional centre) for asylum seekers. Most research focuses on its effect on the asylum seeking population. Little is known about the impact of direct provision accommodation on organisation and delivery of local primary care and social care services in the community. The aim of this research is to explore this issue. Methods In 2005 a direct provision accommodation centre was opened in a rural area in Ireland. A retrospective qualitative case study was designed comprising in-depth interviews with 37 relevant stakeholders. Thematic analysis following the principles of framework analysis was applied. Results There was lack of advance notification to primary care and social care professionals and the community about the new accommodation centre. This caused anxiety and stress among relevant stakeholders. There was insufficient time to plan and prepare appropriate primary care and social care for the residents, causing a significant strain on service delivery. There was lack of clarity about how primary care and social care needs of the incoming residents were to be addressed. Interdisciplinary support systems developed informally between healthcare professionals. This ensured that residents of the accommodation centre were appropriately cared for. Conclusions Direct provision accommodation impacts on the organisation and delivery of local primary care and social care services. There needs to be sufficient advance notification and inter-agency, inter-professional dialogue to manage this. Primary care and social care professionals working with asylum seekers should have access to training to enhance their skills for working in cross-cultural consultations. PMID:21575159

  4. The Impact of Direct Provision Accommodation for Asylum Seekers on Organisation and Delivery of Local Primary Care and Social Care Services: A Case Study

    LENUS (Irish Health Repository)

    Pieper, Hans-Olaf

    2011-05-15

    Abstract Background Many western countries have policies of dispersal and direct provision accommodation (state-funded accommodation in an institutional centre) for asylum seekers. Most research focuses on its effect on the asylum seeking population. Little is known about the impact of direct provision accommodation on organisation and delivery of local primary care and social care services in the community. The aim of this research is to explore this issue. Methods In 2005 a direct provision accommodation centre was opened in a rural area in Ireland. A retrospective qualitative case study was designed comprising in-depth interviews with 37 relevant stakeholders. Thematic analysis following the principles of framework analysis was applied. Results There was lack of advance notification to primary care and social care professionals and the community about the new accommodation centre. This caused anxiety and stress among relevant stakeholders. There was insufficient time to plan and prepare appropriate primary care and social care for the residents, causing a significant strain on service delivery. There was lack of clarity about how primary care and social care needs of the incoming residents were to be addressed. Interdisciplinary support systems developed informally between healthcare professionals. This ensured that residents of the accommodation centre were appropriately cared for. Conclusions Direct provision accommodation impacts on the organisation and delivery of local primary care and social care services. There needs to be sufficient advance notification and inter-agency, inter-professional dialogue to manage this. Primary care and social care professionals working with asylum seekers should have access to training to enhance their skills for working in cross-cultural consultations.

  5. Dynamic least-squares kernel density modeling of Fokker-Planck equations with application to neural population.

    Science.gov (United States)

    Shotorban, Babak

    2010-04-01

    The dynamic least-squares kernel density (LSQKD) model [C. Pantano and B. Shotorban, Phys. Rev. E 76, 066705 (2007)] is used to solve the Fokker-Planck equations. In this model the probability density function (PDF) is approximated by a linear combination of basis functions with unknown parameters whose governing equations are determined by a global least-squares approximation of the PDF in the phase space. In this work basis functions are set to be Gaussian for which the mean, variance, and covariances are governed by a set of partial differential equations (PDEs) or ordinary differential equations (ODEs) depending on what phase-space variables are approximated by Gaussian functions. Three sample problems of univariate double-well potential, bivariate bistable neurodynamical system [G. Deco and D. Martí, Phys. Rev. E 75, 031913 (2007)], and bivariate Brownian particles in a nonuniform gas are studied. The LSQKD is verified for these problems as its results are compared against the results of the method of characteristics in nondiffusive cases and the stochastic particle method in diffusive cases. For the double-well potential problem it is observed that for low to moderate diffusivity the dynamic LSQKD well predicts the stationary PDF for which there is an exact solution. A similar observation is made for the bistable neurodynamical system. In both these problems least-squares approximation is made on all phase-space variables resulting in a set of ODEs with time as the independent variable for the Gaussian function parameters. In the problem of Brownian particles in a nonuniform gas, this approximation is made only for the particle velocity variable leading to a set of PDEs with time and particle position as independent variables. Solving these PDEs, a very good performance by LSQKD is observed for a wide range of diffusivities.

  6. 中国服务业利用外商直接投资实证分析%An Empirical Analysis of Foreign Direct Investment in China Mainland's Service Industry

    Institute of Scientific and Technical Information of China (English)

    殷凤; 陈宪

    2009-01-01

    In the process of global industrial adjustment,the structure of Foreign Direct Investment(FDI)has shifted towards services.The degree of openness of service industry has been greatly improved since China's opening up to the outside world.As a result,FDI in services has grown substantially.It can be expected that China's service industry will become the most attractive field to foreign capital.In this paper,the status,problems and determinants of FDI in China's service industry are analyzed.Compared with the world growth trend of services FDI and its changing mix,the stock of China's services FDI is rather small and the sector distribution is uneven:the proportions of finance,trade and fundamental service sectors are very small,while FDI in real estate,leasing and business services account for very large share.Services FDI in China shows strong locational preference,while the sector distribution in provinces or cities does not have much difference,mostly concentrating in such service sectors as real estate and social services.Services FDI in China are positively influenced by the degree of openness and market scale.However,there aren't appreciable relationships between services FDI and the infrastructure,development level of service industry and human capital.It conducts empirical analyses on the relationship between services FDI and the value-added,labor productivity of China's service industry.It shows that the positive relationship between services FDI and the development of China's service industry is not evident.There exists a positive correlation between services FDI and labor productivity of China's service industry,but this effect has a time lag.Some countermeasures are put forward accordingly.

  7. A Generalized Boltzmann Fokker-Planck Method for Coupled Charged Particle Transport

    Energy Technology Data Exchange (ETDEWEB)

    Prinja, Anil K

    2012-01-09

    The goal of this project was to develop and investigate the performance of reduced-physics formulations of high energy charged particle (electrons, protons and heavier ions) transport that are computationally more efficient than not only analog Monte Carlo methods but also the established condensed history Monte Carlo technique. Charged particles interact with matter by Coulomb collisions with target nuclei and electrons, by bremsstrahlung radiation loss and by nuclear reactions such as spallation and fission. Of these, inelastic electronic collisions and elastic nuclear collisions are the dominant cause of energy-loss straggling and angular deflection or range straggling of a primary particle. These collisions are characterized by extremely short mean free paths (sub-microns) and highly peaked, near-singular differential cross sections about forward directions and zero energy loss, with the situation for protons and heavier ions more extreme than for electrons. For this reason, analog or truephysics single-event Monte Carlo simulation, while possible in principle, is computationally prohibitive for routine calculation of charged particle interaction phenomena.

  8. Fokker-Planck equation with memory: the cross over from ballistic to diffusive processes in many particle systems and incompressible media

    Directory of Open Access Journals (Sweden)

    V. Ilyin

    2013-03-01

    Full Text Available The unified description of diffusion processes that cross over from a ballistic behavior at short times to normal or anomalous diffusion (sub- or superdiffusion at longer times is constructed on the basis of a non-Markovian generalization of the Fokker-Planck equation. The necessary non- Markovian kinetic coefficients are determined by the observable quantities (mean- and mean square displacements. Solutions of the non-Markovian equation describing diffusive processes in the physical space are obtained. For long times these solutions agree with the predictions of continuous random walk theory; they are however much superior at shorter times when the effect of the ballistic behavior is crucial.

  9. The solution of the time-dependent Fokker-Planck equation of non-degenerate optical parametric amplification and its application to the optimum realization of EPR paradox

    Institute of Scientific and Technical Information of China (English)

    Zhao Chao-Ying; Tan Wei-Han

    2007-01-01

    In this paper,the solution of the time-dependent Fokker-Planck equation of non-degenerate optical parametric amplification is used to deduce the condition demonstrating the Einstein-Podolsky-Rosen (EPR) paradox.The analytics and numerical calculation show the influence of pump depletion on the error in the measurement of continuous variables.The optimum realization of EPR paradox can be achieved by adjusting the parameter of squeezing.This result is of practical importance when the realistic experimental conditions are taken into consideration.

  10. [The directions of activity of the medical service on prophylaxis and early revealing of tuberculosis in the Armed Forces of the Russian Federation].

    Science.gov (United States)

    Khalimov, Iu Sh; Beznosik, R V; Shitov, Iu N; Dantsev, V V; Muchaidze, R D

    2012-07-01

    The basic directions of system of antituberculous actions in the Armed Forces of the Russian Federation includes: 1) non-admission of citizens, sick of tuberculosis, on military service; 2) allocation of group of persons with the raised risk of tuberculosis among all military servicemen, dispensary dynamic supervision over them and carrying out of chemoprophylaxis; 3) revealing of tuberculosis among military servicemen at preventive medical inspections (including fluorography), and also in case of reference for medical aid with the symptoms specifying on possibility of tuberculosis; 4) carrying out antiepidemic actions in military unit, in case of revealing patient, sick of tuberculosis, well-timed, qualitatively and in full. The major stage of antituberculous actions is a profound medical examination of young reinforcement (recruits under service call and under the contract) after the arrival in army. Preventive actions in group of persons with the raised risk of tuberculosis also are a priority for the medical service of military unit. Final desinfection, controllable emergency chemoprophylaxis and extraordinary fluorography of contact persons under epidemic indications are crucial important for decrease of morbidity in the army focuses of tuberculosis.

  11. Analyzing of DNA behavior in passing through micro-structures based on the Fokker-Planck equation and the entropic barrier model

    Directory of Open Access Journals (Sweden)

    N Maleki-Jirsaraei

    2009-09-01

    Full Text Available We considered the motion of DNA molecules through a hexagonal array under uniform electric fields as a Fokker-Planck process which is affected by the entropic barriers and we have simulated this motion by computer. We solved the Fokker-Planck equation with numerical simulation of the Brownian dynamics by the Euler method. For different DNA molecules, under different physical conditions, the mean value of velocity, variance, and < x2 > have been calculated, and the results have been compared with the Phase Diagram of our previous results. In the light of this comparison we could find the physics of the DNA behavior in different regimes. It is observed that in regime-1 (small DNA molecules under weak Electric force we have a pure diffusion process, in regime-3 (large DNA molecules under high Electric field the entropic barrier model is the dominated physics, and in regime-2 (medium DNA molecules under medium and relative high Electric fields, which is a more complicated regime we have a drifted diffusion phenomenon.

  12. Fractional Brownian motions via random walk in the complex plane and via fractional derivative. Comparison and further results on their Fokker-Planck equations

    Energy Technology Data Exchange (ETDEWEB)

    Jumarie, Guy E-mail: jumarie.guy@uqam.ca

    2004-11-01

    There are presently two different models of fractional Brownian motions available in the literature: the Riemann-Liouville fractional derivative of white noise on the one hand, and the complex-valued Brownian motion of order n defined by using a random walk in the complex plane, on the other hand. The paper provides a comparison between these two approaches, and in addition, takes this opportunity to contribute some complements. These two models are more or less equivalent on the theoretical standpoint for fractional order between 0 and 1/2, but their practical significances are quite different. Otherwise, for order larger than 1/2, the fractional derivative model has no counterpart in the complex plane. These differences are illustrated by an example drawn from mathematical finance. Taylor expansion of fractional order provides the expression of fractional difference in terms of finite difference, and this allows us to improve the derivation of Fokker-Planck equation and Kramers-Moyal expansion, and to get more insight in their relation with stochastic differential equations of fractional order. In the case of multi-fractal systems, the Fokker-Planck equation can be solved by using path integrals, and the fractional dynamic equations of the state moments of the stochastic system can be easily obtained. By combining fractional derivative and complex white noise of order n, one obtains a family of complex-valued fractional Brownian motions which exhibits long-range dependence. The conclusion outlines suggestions for further research, mainly regarding Lorentz transformation of fractional noises.

  13. The role of hydrological and water quality models in the application of the ecosystem services framework for the EU Water Framework Directive

    Science.gov (United States)

    Hallouin, Thibault; Bruen, Michael; Feeley, Hugh B.; Christie, Michael; Bullock, Craig; Kelly, Fiona; Kelly-Quinn, Mary

    2017-04-01

    The hydrological cycle is intimately linked with environmental processes that are essential for human welfare in many regards including, among others, the provision of safe water from surface and subsurface waterbodies, rain-fed agricultural production, or the provision of aquatic-sourced food. As well as being a receiver of these natural benefits, the human population is also a manager of the water and other natural resources and, as such, can affect their future sustainable provision. With global population growth and climate change, both the dependence of the human population on water resources and the threat they pose to these resources are likely to intensify so that the sustainability of the coupled natural and human system is threatened. In the European Union, the Water Framework Directive is driving policy and encouraging member states to manage their water resources wisely in order to maintain or restore ecological quality. To this end, the ecosystem services framework can be a useful tool to link the requirements in terms of ecological status into more tangible descriptors, that is the ecosystem services. In the ESManage Project, existing environmental system models such as hydrological models and water quality models are used as the basis to quantify the provision of many hydrological and aquatic ecosystem services by constructing indicators for the ecosystem services from the modelled environmental variables. By allowing different management options and policies to be compared, these models can be a valuable source of information for policy makers when they are used for climate and land use scenario analyses. Not all hydrological models developed for flood forecasting are suitable for this application and inappropriate models can lead to questionable conclusions. This paper demonstrates the readily available capabilities of a specially developed catchment hydrological model coupled with a water quality model to quantify a wide range of biophysically

  14. DC SQUID, NQUID and nanoSQUID; “The prediction of behaviors on the base of analytic results of the Fokker-Planck equation”

    Directory of Open Access Journals (Sweden)

    M Eatesami

    2009-08-01

    Full Text Available  By defining the loop inductance for NQUID and considering sinusoidal Fourier series for the current-phase relations of its nanowires and replacing two Langevin equations with one two-dimensional Fokker-Planck equation, we have obtained analytical relations for the characteristics of the asymmetric NQUID. On the other hand for DC SQUIDs and nanoSQUID, we have to consider simultaneously the effects of the deviation of the current-phase relation from Is(θα sinθ , the effects of fluctuations and noises and also the effects of asymmetry (usually two junctions have some differences on the current-voltage characteristic. Therefore various considerations necessitate more accurate analytical formulation and more theoretical predictions .

  15. Heavy (or large) ions in a fluid in an electric field: The diffusion equation exactly following from the Fokker-Planck equation.

    Science.gov (United States)

    Ferrari, Leonardo

    2008-07-28

    The problem of the derivation of the diffusion equation exactly following from the Fokker-Planck (or Klein-Kramers) equation for heavy (or large) particles in a fluid in an external force field is solved in the case in which the particles are ions subject to a uniform (but in general time-varying) electric field. It is found that such a diffusion equation maintains memory of the initial ion velocity distribution, unless sufficiently large values of time are considered. In such temporal asymptotic limit, the diffusion equation exactly becomes (i) the Smoluchowski equation when the electric field is constant in time, and (ii) a new equation generalizing the Smoluchowski equation, when the electric field is arbitrarily time varying. Finally, it is shown that the obtained exact (or asymptotic) results make questionable the procedures and the results of approximate theories developed in the past to get a "corrected" Smoluchowski equation when the external force can also be, in general, position dependent.

  16. Algunas soluciones exactas para la ecuación unidimensional de fokker-planck usando simetrías de lie

    OpenAIRE

    Ortíz-Álvarez, Hugo Hernán; Jiménez-García, Francy Nelly; Posso-Agudelo, Abel Enrique

    2015-01-01

    La ecuación de Fokker Planck aparece en el estudio de fenómenos de difusión, procesos estocásticos y mecánica clásica y cuantica. Un caso particular de esta ecuación, ut − uxx − xux − u = 0, es analizada empleando el método de los grupos de Lie. De la condición de invariación fue posible obtener los generadores infinitesimales ó vectores de la ecuación identificando los correspondientes grupos de simetría. Se obtuvieron soluciones exactas para cada uno de estos generadores y se construyeron n...

  17. Opinion of Energie-Cites on: Proposals for a directive of the European Parliament and of the Council; Avis d'Energie-Cites sur la: proposition de directive du parlement europeen et du conseil relative a l'efficacite energetique dans les utilisations finales et aux services energetiques

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-12-01

    The Proposal for a Directive on energy end-use efficiency and energy services, published in December 2003, is intended to develop and encourage energy efficiency on the demand side, in particular that provided by utilities and related services companies in the form of energy services, since promoting energy services is an important element for reducing greenhouse gas emissions. This proposal, focusing on the promotion of end-use efficiency, should be regarded as a necessary instrument to complement the recently adopted legislation on the opening of the internal energy market, which mainly leads to efficiency improvements on the supply side. (A.L.B.)

  18. Research on Enterprise Service Innovation Direction Choice Based on K-means%基于K-means算法的企业服务创新方向选择研究

    Institute of Scientific and Technical Information of China (English)

    李玮婷; 彭岩

    2011-01-01

    In enterprises service innovation process, first thing need to be consider is the accordance between business development strategy and its advantage ability, then determine the direction of development of service innovation based on the two points above. This paper based on the enterprise's advantage ability, establish the strategic direction of creative service choice model using K-means algorithm to identify and determine the strategic direction of the enterprise service innovation, result the best service positioning strategy of enterprise service innovation.%企业在进行服务创新过程中,首先需要考虑到企业发展战略与其自身优势能力的匹配性,结合这两点来确定服务创新的发展方向.本文研究了企业基于自身已有的优势能力,运用K-means算法建立了企业服务创新战略方向选择模型,识别并确定了企业服务创新战略方向,由此得出企业进行服务创新时的最佳服务定位策略.

  19. Ergodic directional switching in mobile insect groups

    KAUST Repository

    Escudero, Carlos

    2010-07-29

    We obtain a Fokker-Planck equation describing experimental data on the collective motion of locusts. The noise is of internal origin and due to the discrete character and finite number of constituents of the swarm. The stationary probability distribution shows a rich phenomenology including nonmonotonic behavior of several order and disorder transition indicators in noise intensity. This complex behavior arises naturally as a result of the randomness in the system. Its counterintuitive character challenges standard interpretations of noise induced transitions and calls for an extension of this theory in order to capture the behavior of certain classes of biologically motivated models. Our results suggest that the collective switches of the group\\'s direction of motion might be due to a random ergodic effect and, as such, they are inherent to group formation. © 2010 The American Physical Society.

  20. The economic opportunity of energy efficiency. An overview of the legal and regulatory framework, programs and energy services evaluation in Europe and in Portugal and of the possible implementation of the present proposal on the energy services directive

    Energy Technology Data Exchange (ETDEWEB)

    Vasconcelos, F

    2004-11-01

    management of the consumption (to the level of offers as of the search) and finally we establish an economical impact estimation for the production and household consumption the Energy Services Directive proposal of December 2003. The results will confirm our expectation regarding the Portuguese energy consumption trend. We will conclude that, although difficult to implement due to structural and organisational reasons, the implementation of an energy efficiency strategy should be done and that EDP can obtain profit in its incitation. (author)

  1. PERKEMBANGAN LIBERALISASI INVESTASI DARI ASEAN FRAMEWORK AGREEMENT ON SERVICES (AFAS PAKET 1 SAMPAI PAKET 8 DAN MASUKNYA FOREIGN DIRECT INVESTMENT (FDI ASAL ASEAN PADA JASA TRANSPORTASI UDARA INDONESIA

    Directory of Open Access Journals (Sweden)

    Herlitah

    2016-10-01

    Full Text Available This paper aims to explain how about the level of commitment of Indonesia in air transport services in cooperation AFAS Package 1- 8 and the development of investment in this sector since the signing of the cooperation AFAS Package 1 - 8. To map the position of Indonesia in the sector of air transport services in cooperation AFAS the method used were indexation and Hoekman index. To measure competitiveness using Data Envelopment Analysis (DEA to measure the economic impact analysis of input-output model of regional ASEAN. Based on the analysis of AFAS 1-8 shows that the air transport services sector until now has not been opened. Domestic liberalization conditions under Regulation Updates (DNI 2016 FEP allowed on air transport services between 49 percent to 67 percent. One of the sub-sectors that have been opened with the majority shareholding for foreigners (67 per cent is supporting air transport services subsector. When seen through the analysis of the competitiveness of efficient transport services based on the value of the Indonesia Air Transport efficient only remaining other services are still very much value for efficient.

  2. 位相不匹配情形Fokker-Planck方程的解及其在准位相匹配参量放大中的应用%The solution of phase-mismatched Fokker-Planck equation and its application in the QPM device

    Institute of Scientific and Technical Information of China (English)

    赵超樱; 谭维翰

    2005-01-01

    在前文的基础上求得了简并参量放大系统在位相不匹配情况下的Fokker-Planck方程一个新的解析解,然后通过准位相匹配(QPM),计算振幅的量子起伏.这一结果在不考虑损耗(k=0)情况下,与已知的按解Langevin方程求得的结果为一致.对于一般的考虑损耗(k≠0)情况,我们也得出损耗系数k对压缩态特性的影响.

  3. Probing photoisomerization processes by means of multi-dimensional electronic spectroscopy: The multi-state quantum hierarchical Fokker-Planck equation approach

    Science.gov (United States)

    Ikeda, Tatsushi; Tanimura, Yoshitaka

    2017-07-01

    Photoisomerization in a system with multiple electronic states and anharmonic potential surfaces in a dissipative environment is investigated using a rigorous numerical method employing quantum hierarchical Fokker-Planck equations (QHFPEs) for multi-state systems. We have developed a computer code incorporating QHFPE for general-purpose computing on graphics processing units that can treat multi-state systems in phase space with any strength of diabatic coupling of electronic states under non-perturbative and non-Markovian system-bath interactions. This approach facilitates the calculation of both linear and nonlinear spectra. We computed Wigner distributions for excited, ground, and coherent states. We then investigated excited state dynamics involving transitions among these states by analyzing linear absorption and transient absorption processes and multi-dimensional electronic spectra with various values of heat bath parameters. Our results provide predictions for spectroscopic measurements of photoisomerization dynamics. The motion of excitation and ground state wavepackets and their coherence involved in the photoisomerization were observed as the profiles of positive and negative peaks of two-dimensional spectra.

  4. Extension of the analytical kinetics of micellar relaxation: Improving a relation between the Becker-Döring difference equations and their Fokker-Planck approximation

    Science.gov (United States)

    Babintsev, I. A.; Adzhemyan, L. Ts.; Shchekin, A. K.

    2017-08-01

    Relaxation of micellar systems can be described with the help of the Becker-Döring kinetic difference equations for aggregate concentrations. Passing in these equations to continual description, when the aggregation number is considered as continuous variable and the concentration difference is replaced by the concentration differential, allows one to find analytically the eigenvalues (to whom the inverse times of micellar relaxation are related) and eigenfunctions (or the modes of fast relaxation) of the linearized differential operator of the kinetic equation corresponding to the Fokker-Planck approximation. At this the spectrum of eigenvalues appears to be degenerated at some surfactant concentrations. However, as has been recently found by us, there is no such a degeneracy at numerical determination of the eigenvalues of the matrix of coefficients for the linearized difference Becker-Döring equations. It is shown in this work in the frameworks of the perturbation theory, that taking into account the corrections to the kinetic equation produced by second derivatives at transition from differences to differentials and by deviation of the aggregation work from a parabolic form in the vicinity of the work minimum, lifts the degeneracy of eigenvalues and improves markedly the agreement of concentration-dependent fast relaxation time with the results of the numerical solution of the linearized Becker-Döring difference equations.

  5. Oligarchy as a Phase Transition: The effect of wealth-attained advantage in a Fokker-Planck description of asset exchange

    CERN Document Server

    Boghosian, Bruce M; Johnson, Merek; Marcq, Jeremy A; Wang, Hongyan

    2015-01-01

    In earlier work [1,2], we derived a Fokker-Planck equation for the ``Yard-Sale Model'' (YSM) of asset exchange. In the absence of redistribution, we showed that the Gini coefficient $G$ is a Lyapunov functional for this model [3], and that the time-asymptotic state of the model's wealth distribution has $G=1$, corresponding to complete inequality -- all of the wealth in the hands of a single agent. When a simple one-parameter model of redistribution, based on the Ornstein-Uhlenbeck process, is introduced, we also showed that the model admits a steady state exhibiting some features in common with the celebrated Pareto Law of wealth distribution [1]. In this work, we analyze the form of this steady-state distribution in much greater detail, using a combination of analytic and numerical techniques. We find that, while Pareto's Law is approximately valid for low redistribution, it gives way to something more similar to Gibrat's Law when redistribution is higher. Also in this work, we generalize the model by intro...

  6. Fully non-linear multi-species Fokker-Planck-Landau collisions for gyrokinetic particle-in-cell simulations of fusion plasma

    Science.gov (United States)

    Hager, Robert; Yoon, E. S.; Ku, S.; D'Azevedo, E. F.; Worley, P. H.; Chang, C. S.

    2015-11-01

    We describe the implementation, and application of a time-dependent, fully nonlinear multi-species Fokker-Planck-Landau collision operator based on the single-species work of Yoon and Chang [Phys. Plasmas 21, 032503 (2014)] in the full-function gyrokinetic particle-in-cell codes XGC1 [Ku et al., Nucl. Fusion 49, 115021 (2009)] and XGCa. XGC simulations include the pedestal and scrape-off layer, where significant deviations of the particle distribution function from a Maxwellian can occur. Thus, in order to describe collisional effects on neoclassical and turbulence physics accurately, the use of a non-linear collision operator is a necessity. Our collision operator is based on a finite volume method using the velocity-space distribution functions sampled from the marker particles. Since the same fine configuration space mesh is used for collisions and the Poisson solver, the workload due to collisions can be comparable to or larger than the workload due to particle motion. We demonstrate that computing time spent on collisions can be kept affordable by applying advanced parallelization strategies while conserving mass, momentum, and energy to reasonable accuracy. We also show results of production scale XGCa simulations in the H-mode pedestal and compare to conventional theory. Work supported by US DOE OFES and OASCR.

  7. LETTER: Study of combined NBI and ICRF enhancement of the D-3He fusion yield with a Fokker-Planck code

    Science.gov (United States)

    Azoulay, M.; George, M. A.; Burger, A.; Collins, W. E.; Silberman, E.

    A two-dimensional bounce averaged Fokker-Planck code is used to study the fusion yield and the wave absorption by residual hydrogen ions in higher harmonic ICRF heating of D (120 keV) and 3He (80 keV) beams in the JT-60U tokamak. Both for the fourth harmonic resonance of 3He (ω = 4ωc3He(0), which is accompanied by the third harmonic resonance of hydrogen (ω = 3ωcH) at the low field side, and for the third harmonic resonance of 3He (ω = 4ωcD(0) = 3ωc3He(0)) = 2ωcH(0)), a few per cent of hydrogen ions are found to absorb a large fraction of the ICRF power and to degrade the fusion output power. In the latter case, D beam acceleration due to the fourth harmonic resonance in the 3He(D) regime can enhance the fusion yield more effectively. A discussion is given of the effect of D beam acceleration due to the fifth harmonic resonance (ω = 5ωcD) at the high field side in the case of ω = 4ωc3He(0) and of the optimization of the fusion yield in the case of lower electron density and higher electron temperature

  8. Gulf of Mexico and Caribbean Community Sustainability Study Focuses on Tying the Science of Ecosystem Services and Human Health Directly to Community Decision Making

    Science.gov (United States)

    The Community-based Sustainability Research Program in EPA’s Office of Research and Development is studying how the availability of ecosystem goods and services (EGS) is impacted by community decision making and how this relationship alters human wellbeing. We also seek ‘common g...

  9. The science of service systems

    CERN Document Server

    Demirkan, Haluk; Krishna, Vikas

    2011-01-01

    This book presents a multidisciplinary and multisectoral perspective on the nature of service systems, on research and practice in service and on the future directions to advance service science.  It offers theory-based research with actionable results.

  10. 47 CFR 1.4000 - Restrictions impairing reception of television broadcast signals, direct broadcast satellite...

    Science.gov (United States)

    2010-10-01

    ... broadcast signals, direct broadcast satellite services or multichannel multipoint distribution services. 1... Broadcast Satellite Services, or Multichannel Multipoint Distribution Services or the Ability To Receive or... broadcast signals, direct broadcast satellite services or multichannel multipoint distribution services....

  11. A mechanistic-stochastic formulation of bed load particle motions: From individual particle forces to the Fokker-Planck equation under low transport rates

    Science.gov (United States)

    Fan, Niannian; Zhong, Deyu; Wu, Baosheng; Foufoula-Georgiou, Efi; Guala, Michele

    2014-03-01

    Bed load transport is a highly complex process. The probability density function (PDF) of particle velocities results from the local particle momentum variability in response to fluid drag and interactions with the bed. Starting from the forces exerted on a single particle under low transport rates (i.e., rolling and sliding regimes), we derive here the nonlinear stochastic Langevin equation (LE) to describe the dynamics of a single particle, accounting for both the deterministic and the stochastic components of such forces. Then, the Fokker-Planck equation (FPE), which describes the evolution of the PDF of the ensemble particle velocities, is derived from the LE. We show that the theoretical PDFs of both streamwise and cross-stream velocities obtained by solving the FPE under equilibrium conditions have exponential form (PDFs of both positive and negative velocities decay exponentially), consistent with the experimental data by Roseberry et al. Moreover, we theoretically show how the exponential-like PDF of an ensemble of particle velocities results from the forces exerted on a single particle. We also show that the simulated particle motions using the proposed Langevin model exhibit an emergent nonlinear relationship between hop distances and travel times (power law with exponent 5/3), in agreement with the experimental data, providing a statistical description of the particles' random motion in the context of a stochastic transport process. Finally, our study emphasizes that the motion of individual particles, described by the LE, and the behavior of the ensemble, described by the FPE, are connected within a statistical mechanics framework.

  12. Statistical and methodological issues in connection with the EU directive on energy end-use efficiency and energy services. Final report; Statistisch-methodische Fragen im Zusammenhang mit der Richtlinie der EU-KOM zu Endenergieeffizienz und zu Energiedienstleistungen. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Eichhammer, W.; Schlomann, B.; Gruber, E.

    2006-09-15

    After its recent approval by the EU the Directive on Energy End-Use Efficiency and Energy Services entered into force on 17 May 2006. In this research project the Fraunhofer Institute ISI, acting on behalf of the German Federal Ministry for Economy and Technology, examined how this Directive might be transposed into German national law. In a first step the basic prerequisites for the Directive's transposition into national law were examined. This involved determining the national savings target for Germany as specified by the Directive and assessing its aimed-for savings in general. A question of focal interest was whether such an assessment should best be performed by a top-down or a bottom-up approach or by a combination of the two. The main characteristics of these two approaches were discussed in connection with the statistical data basis in Germany. These characteristics were then used directly for an assessment of ''Early Action'', i.e. of political measures that were implemented at an early stage (mostly after 1995) but which the Directive recognises as savings. The public sector was examined in greater depth because it has been charged with a model role by the Directive. This preparatory work provided a basis for the second step, in which a basic model for the implementation of activity assessments in Germany as required by the Directive was drafted and a possible structure for the energy efficiency action plans which the Directive requires to be set up by the member states was outlined.

  13. On the correspondence between a large class of dynamical systems and stochastic processes described by the generalized Fokker-Planck equation with state-dependent diffusion and drift coefficients

    Science.gov (United States)

    Bianucci, Marco

    2015-05-01

    In this paper using a projection approach and defining the adjoint-Lie time evolution of differential operators, that generalizes the ordinary time evolution of functions, we obtain a Fokker-Planck equation for the distribution function of a part of interest of a large class of dynamical systems. The main assumptions are the weak interaction between the part of interest and the rest of the system (typically non linear) and the average linear response to external perturbations of the irrelevant part. We do not use ad hoc statistical assumptions to introduce as given a priori phenomenological equilibrium or transport coefficients. The drift terms induced by the interaction with the irrelevant part is obtained with a procedure that is reminiscent of that developed some years ago by Bianucci and Grigolini (see for example (Bianucci et al 1995 Phys. Rev. E 51 3002)) to derive in a ‘genuine’ way thermodynamics and statistical mechanics of macroscopic variables of interest starting from microscopic dynamics. However here we stay in a more broad and formal context where the system of interest could be dissipative and the interaction between the two systems could be non Hamiltonian, thus the approach of the cited paper can not be used to obtain the diffusion part of the Fokker-Planck equation. To face the problem of dealing with the series of differential operators stemming from the projection approach applied to this general case, we introduce the formalism of the Lie derivative and the corresponding adjoint-Lie time evolution of differential operators. In this theoretical framework we are able to obtain well defined analytic functions both for the drift and the diffusion coefficients of the Fokker-Planck equation. We think that the basic elements of Lie algebra introduced in our projection approach can be useful to achieve even more general and more formally elegant results than those here presented. Thus we consider this paper as a first step of this formal path to

  14. Information Technology Service; Service Informatique

    Energy Technology Data Exchange (ETDEWEB)

    Ageron, M.; Boninchi, V.; Chartoire, M.; Combroux, A.; Giraud, N.; Jacquet, G.; Lagrange, B.; Malleret, S.; Martin, C.; Mas, J.; Morgue, M.; Ollivier, T. [Inst. de Physique Nucleaire, Lyon-1 Univ., 69 - Villeurbanne (France)

    1998-12-31

    The information technology service works out the choices concerning the information technology systems of general use in the laboratory: computers, network, peripherals, workstations, software. It intervenes at the same time in the definition of the procedures and equipment specific to the research groups. The entire data acquisition is centralized by the service. The personnel is sharing the following two large directions of activities: - management of information technology park (setup, configuration and maintenance of the materials and soft ensemble, training and assistance afforded to users); - participation in software projects either in elaboration of applications or in realization and maintenance of specific tools

  15. RESOLUTION NUMERIQUE DE L’EQUATION DE FOKKER-PLANCK ET CALCUL DU COEFFICIENT DE VISCOSITE ELECTRONIQUE D’UN PLASMA COLLISIONNEL TOTALEMENT IONISE

    Directory of Open Access Journals (Sweden)

    A BENDIB

    2001-12-01

    Full Text Available L’équation de Fokker-Planck, qui décrit les électrons d’un plasma complètement ionisé et non magnétisé, a été résolue numériquement. Les collisions électron-ion et électron-électron ont été prises en considération. La fonction de distribution électronique, développée sur la base des polynômes de Legendre, a été calculée jusqu’à la seconde anisotropie. La première anisotropie a été calculée en réduisant le problème à une équation différentielle du quatrième ordre qui peut être résolue numériquement avec les méthodes numériques standards. Les coefficients de transport induits par cette première anisotropie ont été déduits. Ils correspondent exactement à ceux établis dans la littérature par des méthodes numériques différentes, nettement plus complexes. La seconde anisotropie a aussi été calculée en réduisant le problème à une équation différentielle du second ordre en utilisant la méthode itérative. Des résultats très précis sont obtenus à partir de la cinquième itération. La viscosité électronique a été déduite et un ajustement numérique très précis de ce coefficient de transport en fonction du numéro atomique a aussi été proposé.

  16. Regulation, service contract, directional information system. Considerations on the waste sector; Regolamentazione, contratto di servizio, sistema informativo direzionale. Considerazioni sul settore dei rifiuti

    Energy Technology Data Exchange (ETDEWEB)

    Baldini, D; Calonaci, M. [Consorzio Quadrifoglio, Florence (Italy)

    2000-02-01

    The reform of the waste sector's regulatory framework requires firms to make significant cultural changes in pursuing critical success factors. Such changes imply not only a quantitative increase in information needs resulting form the creation of a regulatory authority, dealing with the planning and monitoring of the performance of operators, but more importantly imply a substantial qualitative upgrading of the information provided. In the light of this new approach, the service contract represents the main instrument for regulating the relationship between the various local authorities and the firms who manage the services. As the main outlines of the reform have emerged, the Consorzio Quadrifoglio has launched a project to review and improve its own monitoring and management systems. The present article deals with the methodological difficulties encountered along the way and the solutions which have been adopted to arrive a new management information system. [Italian] La riforma della regolamentazione del settore dei rifiuti impone alle imprese un significativo cambiamento culturale con riferimento ai fattori critici di successo. Il cambiamento si traduce non solo in un aumento del fabbisogno informativo, conseguente alla creazione di autorita' di controllo e quindi alle nuove necessita' di pianificazione e controllo dell'attivita' dei gestori, ma anche in una sua sostanziale riqualificazione. Nel nuovo approccio, il contratto di servizio rappresenta lo strumento cardine per la regolazione dei rapporti tra ente locale e le aziende che gestiscono i servizi. Il Consorzio Quadrifoglio, una volta delineatisi gli indirizzi del disegno di riforma, ha avviato un progetto di revisione dei propri strumenti di controllo di gestione. L'articolo riporta le difficolta' metodologiche e le soluzioni adottate per la creazione di un nuovo sistema informativo direzionale.

  17. Direction of Process: an instrument to improve the restoration services in the system for aliments and beverages management in Kurhotel Escambray.

    Directory of Open Access Journals (Sweden)

    Fabián Enrique Wilson González

    2009-12-01

    Full Text Available This study is made in Kurhotel Escambray, a cuban Institution for health Tourism, located in Topes de Collantes, in the group of montains named Guamhuaya, approximately 800 meters over the sea level with a medial tempeture. It is unquestionable that todays situation that has the restoration of the system for aliments and beverages management in Kurhotel Escambray demands a study to improve its service, taking into account clients and patients needs, for doing this it is necessary to develo this work and present a strategy which will satisfy the regularities that may happen, giving a guarantee of efficiency – efficacy and effectiveness; that is why the importance of it. It is an objective of this work to present the consideation for process in restoration as an alternative proposal to better the system for aliments and beverages management in Kurhotel Escambray. It contains two main themes, the first regarding to the process of restoration in the system of aliments and bevearges management in Kurhotel, where are enumate the outlet process, elaboration, entrance, and extensión or marketing of the product, It is described too, the significance of them inside the restoration process and the other theme reflects characteristics and requirements of every process that interfere in the restoration process. This work propose to strengthen the process of restoration in the aliments and bevarages management for the Installation to improve and better the quality of the services offered; and by means of them contribute to keep the Installation as a Center of National and International Reference.

  18. Modeling C-Band Co-Channel Interference From AeroMACS Omni-Directional Antennas to Mobile Satellite Service Feeder Uplinks

    Science.gov (United States)

    Wilson, Jeffrey D.

    2011-01-01

    A new C-band (5091 to 5150 MHz) airport communications system designated as Aeronautical Mobile Airport Communications System (AeroMACS) is being planned under the Federal Aviation Administration s NextGen program. An interference analysis software program, Visualyse Professional (Transfinite Systems Ltd), is being utilized to provide guidelines on limitations for AeroMACS transmitters to avoid interference with other systems. A scenario consisting of a single omni-directional transmitting antenna at each of the major contiguous United States airports is modeled and the steps required to build the model are reported. The results are shown to agree very well with a previous study.

  19. 78 FR 32533 - Proposed Collection of Information: Direct Deposit, Go Direct, and Direct Express Sign-Up Forms

    Science.gov (United States)

    2013-05-30

    ... Bureau of the Fiscal Service Proposed Collection of Information: Direct Deposit, Go Direct, and Direct...'', Form 1200 ``Go Direct Sign-Up Form for Direct Deposit of Federal Benefit Payments'', Form 1200VADE... below: Title: Direct Deposit Sign-Up Form, and Go Direct Sign-Up Form, and Direct Express Form for...

  20. Elder abuse and neglect--"old phenomenon": new directions for research, legislation, and service developments. (2008 Rosalie S. Wolf Memorial Elder Abuse Prevention Award--International Category Lecture).

    Science.gov (United States)

    Lowenstein, Ariela

    2009-01-01

    This article poses the question: Is elder abuse and neglect a social problem, showing that it is. Elder abuse, though, is still the most hidden form of mistreatment and a key to governmental responses to an ageing population. It is an important facet as a family violence problem, an intergenerational concern, as well as a health, justice and human rights issue. Because the phenomenon of elder abuse and neglect is so complex and multi-dimensional, it has to be addressed by multi-professional and inter-disciplinary approaches. Raising awareness is a fundamental prevention strategy and an important step in causing changes in attitudes and behaviors. This has been accomplished by INPEA and the article was developed from the lecture given by the author on receiving the International Rosalie Wolf Award from INPEA. The discussion focuses on elder abuse as a product of global ageing, stemming from population ageing, which is consistent with an increased prevalence of abuse of all vulnerable groups, older people among them. It is pointed out that baseline and trend data on the nature and prevalence of senior abuse are crucial to policy responses and the development of appropriate programs and services. Difficulties in assessing the scope of the phenomenon, though, are due to: problems in definitions and methodology, which create difficulties in comparing data from various countries; lack of social and familial awareness; isolation of some elders, especially migrants; elder abuse as a 'hidden issue' that usually occurs in the privacy of the home and is viewed as a family affair; limited access to institutional settings. Difficulties also exist in constructing a unifying research framework in order to study the phenomenon due to a lack of comparison groups, a lack of representative national surveys and difficulties in measurement. There is currently, however, an increase in prevalence and incidence studies from both sides of the Atlantic and especially from Europe. But while

  1. Générateur photovolatique avec une commande directe de puissance connecté et avec adjonction de services au réseau de distribution

    OpenAIRE

    GAUBERT, Jean-Paul

    2016-01-01

    International audience; Ce travail est consacré à l'étude d'un générateur solaire photovoltaïque connecté au réseau de distribution et participant à l'amélioration de la qualité de l'énergie au point de connexion grâce aux fonctionnalités de filtrage actif. Une commande directe de puissance (DPC) est développée pour contrôler simultanément la puissance active photovoltaïque injectée, la compensation de l'énergie réactive et l'élimination des courants harmoniques présents sur le réseau et issu...

  2. How service organisations can best attract customer oriented service workers

    OpenAIRE

    Power, John

    2010-01-01

    Today, the services sector accounts for over 70 per cent of employment and activity in OECD countries (OECD, 2009) with the Economic and Social Research Institute of Ireland (2010) reporting that almost two-thirds of the Irish workforce is employed directly in the services sector. Within service industries, service workers are central to the service delivery and their performance, inextricably linked to the performance of the service organisation (Grizzle et al., 2009). Prior research has dem...

  3. Value Realization, Behavior Direction and Supervision Mechanism of Service Administration%服务行政的价值生成、行为指向与监督机制

    Institute of Scientific and Technical Information of China (English)

    杨华锋

    2012-01-01

    Service administration has become a typical paradigm of social management in the process of post - industrialization. The management -oriented type is gradually turning to be consultative and participatory in the cir- cumstance of interaction between the government and the public. And the value of service administration has formed based on it, which enriches the theoretical system of public services and promotes the process of economic develop- ment services in the interaction process of research institutions and the government. To ensure the publicity of gov- ernment public service and the efficiency in public goods supplying, the active participation of mass media has con- stituted an external supervision mechanism, and the perfection of which will determine the degree of realization of the value and behavior direction of service administration.%后工业化的历史进程中,服务行政逐渐成为一种社会管理的典型范式。在政府与公众互动的逻辑视野下,由双向互动所统摄的管理型逐步走向协商型和参与型,在此基础上生发出服务行政的价值内涵;在学府与政府的互动过程中,服务行政的价值探讨丰富着公共服务的理论体系,并推动着服务经济的发展进程;为保障政府公共服务的公共性,以及公共产品供给的高效率,大众媒介的积极参与构成了行政行为的外部监督机制,该机制的健全与完善,将决定着服务行政的价值与行为指向的实现程度。

  4. Depository Libraries and Public Services.

    Science.gov (United States)

    Kessler, Ridley

    1998-01-01

    Discusses the Wright State University (Ohio) Library policy directive on customer service, and suggests this document as a model to follow in setting up service standards or guidelines for depository-library services. Draft-depository library public-service guidelines for government information in electronic format are appended. (JAK)

  5. 浅谈大数据时代图书馆的服务创新与发展方向%Talking about Library’s Service Innovation and Development Direction in the Big Data Era

    Institute of Scientific and Technical Information of China (English)

    杨松

    2016-01-01

    In the big data era, the improvement of library services can’t depart from the support of big data, big data will play an important role in the future development of library industry, one of the key factors is to discover the deep understanding of big data analysis technology. Based on expounding the concept and features of the big data, this paper analyzes the influence of big data on the library, and probes into library’s service innovation and development direction in the big data era.%在大数据时代,图书馆服务质量的提高离不开大数据的支持,大数据将对未来图书馆行业发展起到至关重要的作用,其中关键因素是对大数据分析技术的深入了解与发掘。在阐释大数据概念及特点的基础上,分析了大数据对图书馆产生的影响,探讨了大数据时代图书馆的服务创新与发展方向。

  6. Mechanical Service; Service Mechanique

    Energy Technology Data Exchange (ETDEWEB)

    Alliaume, T.; Benoit, A.; Bonin, H.; Ducimetiere, D.; Essertaize, D.; Gelin, G.; Guillot, G.; Lemoine, C.; Mabo, J.C.; Mounier, F.; Tissot, S.; Verdier, G. [Inst. de Physique Nucleaire, Lyon-1 Univ., 69 - Villeurbanne (France)

    1998-12-31

    The service studies the mechanical part of the experiment or detectors used by the physics groups in collaboration with the physicists, engineers and the technicians of the experiment assistance group as well as with other technical groups. The mechanical service was implied in the following projects: CMS, VIRGO (the IGISOL ion guide chamber), PIAFE, NA50 (reaction chamber, metallic cluster source), ORION, SICANE, EDELWEISS II 2 figs.

  7. Marketing School Food Services.

    Science.gov (United States)

    Wood, Wilma

    1990-01-01

    Marketing the food service program in an Ohio district is directed toward the students and also at the community, school administrators, teachers, and employees. Students are encouraged to follow a healthier way of eating. (MLF)

  8. Service Gateway

    Institute of Scientific and Technical Information of China (English)

    WANG Guozhong; HOU Gang; HUANG Zeqing

    2003-01-01

    This article focuses on the service gateway which implements the Open Service gateway Initiative (OSGI), it manages voice, data, Internet, and multimedia communications to and from the home, office and other locations. This service gateway can also function as an application server for a range of high value services such as energy management and control, safety and security services, health care monitoring services, device control and maintenance, electronic commerce services and more.

  9. Service Quality Challenges in an Indian Automobile Service Industries

    Directory of Open Access Journals (Sweden)

    Mr. Mangesh D. Jadhao

    2016-12-01

    Full Text Available Market scenario in past decade changes very fast due to computation in a market. Changing a technology and launching new models in market are as per customer demand. Providing service quality is a big task to many organizations. Today automobile service sector faces many problems due to increase of customer expectation from branded company. This study overview the challenges faced by an Indian automobile service sector and find the various gaps which will directly or indirectly affects on service quality and factor which affects the service. The paper concludes with the gaps that affects on current position of four wheeler service industries their market share in automobile service industries.

  10. Comparison of the fractional advection-dispersion equation and the fractional Fokker-Planck equation:Fractional dynamics and real-world applicability%分数阶对流-弥散方程和分数阶Fokker-Planck方程的比较:动态过程及实际应用

    Institute of Scientific and Technical Information of China (English)

    张勇

    2011-01-01

    Both the fractional advection-dispersion equation (fADE) and the fractional Fokker-Planck equation (fFPE) have been proposed recently as the fractional engine for Lévy motion with a spacedependent diffusion coefficient D.Discrepancy between the two fractional-derivative models however remains obscure, challenging the reliability of applications.This study distinguishes the two models by evaluating the underlying physical process and real-world applicability.The continuity theory first shows that the fADE relies on a generalized Fick's diffusive law, while the fFPE defines a nonlocal diffusive flux deviating significantly from Fick's law.Further dynamic analysis using the Langevin approach reveals that the solute displacement described by the fADE contains an additional Lévy noise of order al, to characterize the spatial variation of D.Numerical experiments using both Eulerian and Lagrangian solvers illustrate the different leading edges of plumes described by different models, where D varies continuously in space.For the ease of a discrete D, the particle plume governed by the fFPE exhibits an abrupt interface, while the plume distributes smoothly if the transport is governed by the fADE.Finally,the two models are applied to capture the well-known MADE-site tritium snapshot.Curve-fitting applications show that a mean water velocity beyond field measurements is needed for the fFPE to capture Lévy motion in non-stationary alluvial aquifers.The fADE model therefore can be more feasible in applications due to the reasonable range of hydrological parameters, although 1 ) the fFPE model can be approximated more efficiently, and 2) physically no model is superior to the other.%分数阶对流-弥散方程(fADE)和分数阶Fokker-Planck方程(fFPE)都被视为一种有效工具来研究含变扩散系数D的Lévy运动.然而,这两种分数阶导数方程的差异并不清楚,给实际应用带来了困难.本文通过系统分析物理机理和应用实例,来区分

  11. [Urban ecosystem services: A review].

    Science.gov (United States)

    Mao, Qi-zheng; Huang, Gan-lin; Wu, Jian-guo

    2015-04-01

    Maintaining and improving ecosystem services in urban areas and human well-being are essential for sustainable development and therefore constitute an important topic in urban ecology. Here we reviewed studies on ecosystem services in urban areas. Based on the concept and classification of urban ecosystem services, we summarized characteristics of urban ecosystem services, including the human domination, high demand of ecosystem services in urban areas, spatial heterogeneity and temporal dynamics of ecosystem services supply and demand in urban areas, multi-services of urban green infrastructures, the socio-economic dimension of ecosystem services supply and ecosystem disservices in urban areas. Among different urban ecosystem services, the regulating service and cultural service are particularly indispensable to benefit human health. We pointed out that tradeoffs among different types of ecosystem services mostly occur between supportive service and cultural service, as well as regulating service and cultural service. In particular, we emphasized the relationship between landscape design (i.e. green infrastructure) and ecosystem services supply. Finally, we discussed current gaps to link urban ecosystem services studies to landscape design and management and pointed out several directions for future research in urban ecosystem services.

  12. Direct Democracy

    DEFF Research Database (Denmark)

    Doerr, Nicole

    2013-01-01

    Direct democracy describes a theory of democracy and a form of collective decision-making in which sovereignty is directly exercised by the people. Democracy is direct if it is characterized by citizens making all decisions together with a maximum of equal participation. Direct democracy can...

  13. FAX SERVICE

    CERN Multimedia

    Telephone Service

    2002-01-01

    As from 1st of July 2002, responsibility for running the Fax Service will be transfered to the Printer Service. Future requests for machines, toner and breakdown should be sent to Printer.Support@cern.ch - tel 78888. Telephone Service

  14. Service Modularity and Architecture

    DEFF Research Database (Denmark)

    Brax, Saara A.; Bask, Anu; Hsuan, Juliana

    2017-01-01

    Purpose: Services are highly important in a world economy which has increasingly become service driven. There is a growing need to better understand the possibilities for, and requirements of, designing modular service architectures. The purpose of this paper is to elaborate on the roots of the e......Purpose: Services are highly important in a world economy which has increasingly become service driven. There is a growing need to better understand the possibilities for, and requirements of, designing modular service architectures. The purpose of this paper is to elaborate on the roots...... of the emerging research stream on service modularity, provide a concise overview of existing work on the subject, and outline an agenda for future research on service modularity and architecture. The articles in the special issue offer four diverse sets of research on service modularity and architecture. Design....../methodology/approach: The paper is built on a literature review mapping the current body of literature on the topic and developing future research directions in service modularity and architecture. Findings: The growing focus on services has triggered needs to investigate the suitability and implementation of physical...

  15. Medical Services: Ophthalmic Services

    Science.gov (United States)

    2007-11-02

    Atlan- tic Treaty Organization (NATO) nations and of other officially rec- ognized foreign military personnel at military installations within the...representatives of religious groups, celebrities, and enter- tainers; representatives of the United Service Organization( USO ), other social agencies, and...from DOD, or from one of the military depart- ments, to visit military commands overseas. b. Dependents of USO oversea area executives, club directors

  16. Multimedia services in intelligent environments recommendation services

    CERN Document Server

    Virvou, Maria; Jain, Lakhmi

    2013-01-01

    Multimedia services are now commonly used in various activities in the daily lives of humans. Related application areas include services that allow access to large depositories of information, digital libraries, e-learning and e-education, e-government and e-governance, e-commerce and e-auctions, e-entertainment, e-health and e-medicine, and e-legal services, as well as their mobile counterparts (i.e., m-services). Despite the tremendous growth of multimedia services over the recent years, there is an increasing demand for their further development. This demand is driven by the ever-increasing desire of society for easy accessibility to information in friendly, personalized and adaptive environments. In this book at hand, we examine recent Recommendation Services. Recommendation services appear in the mobile environment, medicine/biology, tourism, education, and so on. The book includes ten chapters, which present various recently developed recommendation services. This research book is directed to professors...

  17. Service Modularity

    DEFF Research Database (Denmark)

    Avlonitis, Viktor; Hsuan, Juliana

    2015-01-01

    The purpose of this research is to investigate the studies on service modularity with a goal of informing service science and advancing contemporary service systems research. Modularity, a general systems property, can add theoretical underpinnings to the conceptual development of service science...... in general and service systems in particular. Our research is guided by the following question: how can modularity theory inform service system design? We present a review of the modularity literature and associated concepts. We then introduce the contemporary service science and service system discourse...

  18. Directed homology

    DEFF Research Database (Denmark)

    Fahrenberg, Uli

    2004-01-01

    We introduce a new notion of directed homology for semicubical sets. We show that it respects directed homotopy and is functorial, and that it appears to enjoy some good algebraic properties. Our work has applications to higher-dimensional automata.......We introduce a new notion of directed homology for semicubical sets. We show that it respects directed homotopy and is functorial, and that it appears to enjoy some good algebraic properties. Our work has applications to higher-dimensional automata....

  19. 45 CFR 400.148 - Purchase of services.

    Science.gov (United States)

    2010-10-01

    ... 45 Public Welfare 2 2010-10-01 2010-10-01 false Purchase of services. 400.148 Section 400.148... Services Purchase of Services § 400.148 Purchase of services. A state may provide services directly or it may purchase services from public or private service providers. Conditions of Eligibility for...

  20. Direct Broadcast Satellite: Radio Program

    Science.gov (United States)

    Hollansworth, James E.

    1992-01-01

    NASA is committed to providing technology development that leads to the introduction of new commercial applications for communications satellites. The Direct Broadcast Satellite-Radio (DBS-R) Program is a joint effort between The National Aeronautics and Space Administration (NASA) and The United States Information Agency/Voice of America (USIA/VOA) directed at this objective. The purpose of this program is to define the service and develop the technology for a direct-to-listener satellite sound broadcasting system. The DBS-R Program, as structured by NASA and VOA, is now a three-phase program designed to help the U.S. commercial communications satellite and receiver industry bring about this new communications service. Major efforts are being directed towards frequency planning hardware and service development, service demonstration, and experimentation with new satellite and receiver technology.

  1. Investigating the Effects of Consumer Innovativeness, Service Quality and Service Switching Costs on Service Loyalty in the Mobile Phone Service Context

    Directory of Open Access Journals (Sweden)

    Farzana Quoquab

    2016-02-01

    Full Text Available The objective of this study is to examine the effects of consumer innovativeness, service quality, service switching costs and service satisfaction on service loyalty among mobile phone service users. A cross sectional survey was employed which yielded 535 responses. Structural equation modelling using the AMOS version 2.0 was utilized to test study the hypotheses. Test results reveal that service satisfaction, service switching costs and service quality are the three antecedents that directly influence service loyalty. However, consumer innovativeness does not have any direct effect on service loyalty. Moreover, service satisfaction is found to be a partial mediator between ‘service quality’ and ‘service loyalty’. Findings from this study will develop insights to enable policy-makers, managers and marketers to better strategize and effectively implement loyalty programs and prevent their customers from switching. This will enhance value creation for both their users and for the industry.

  2. Ecosystem services

    Science.gov (United States)

    Trista Patterson

    2014-01-01

    Since its inception, the ecosystem service approach has stimulated interest from numerous planning, management, and partnership perspectives. To date, however, research that quantifies ecosystem services in the study area (in the form of explicit ecosystem service studies) has been limited. This chapter reviews and synthesizes the concept of ecosystem services,...

  3. Directed motion generated by heat bath nonlinearly driven by external noise

    Energy Technology Data Exchange (ETDEWEB)

    Chaudhuri, J Ray [Department of Physics, Katwa College, Katwa, Burdwan 713 130, West Bengal (India); Barik, D [Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032 (India); Banik, S K [Department of Physics, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061-0435 (United States)

    2007-12-07

    Based on the heat bath system approach where the bath is nonlinearly modulated by an external Gaussian random force, we propose a new microscopic model to study directed motion in the overdamped limit for a nonequilibrium open system. Making use of the coupling between the heat bath and the external modulation as a small perturbation, we construct a Langevin equation with multiplicative noise- and space-dependent dissipation and the corresponding Fokker-Planck-Smoluchowski equation in the overdamped limit. We examine the thermodynamic consistency condition and explore the possibility of observing a phase-induced current as a consequence of state-dependent diffusion and, necessarily, nonlinear driving of the heat bath by the external noise.

  4. Direct Democracy

    DEFF Research Database (Denmark)

    Beramendi, Virginia; Ellis, Andrew; Kaufman, Bruno

    While many books on direct democracy have a regional or national approach, or simply focus on one of the many mechanisms associated with direct democracy, this Handbook delves into a global comparison of direct democracy mechanisms, including referendums, citizens' initiatives, agenda initiatives...... included as a chapter in the Handbook are possible measures for best practices of implementation, designed for those who wish to tailor direct democracy instruments to their specific needs. In order to further complement the best practices, a variety of global case studies detail the practical uses...... of direct democracy mechanisms in specific contexts. These country case studies allow for in depth discussion of particular issues, including signature collection and voter participation, campaign financing, media coverage, national variations in the usage of direct democracy procedures and national lessons...

  5. Direct Democracy

    DEFF Research Database (Denmark)

    Beramendi, Virginia; Ellis, Andrew; Kaufman, Bruno

    While many books on direct democracy have a regional or national approach, or simply focus on one of the many mechanisms associated with direct democracy, this Handbook delves into a global comparison of direct democracy mechanisms, including referendums, citizens' initiatives, agenda initiatives...... valuable information regarding the binding or non-binding nature of referendums, as well as issues that can be brought forth to a referendum....

  6. 77 FR 24344 - Airworthiness Directives; Learjet Inc.

    Science.gov (United States)

    2012-04-24

    ... airworthiness directive system would not be needed. This commenter justified its request by providing Webster's.... John Piccola, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service....

  7. Ecosystem services and dis-services to agriculture

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Wei; Swinton, Scott M. [Department of Agricultural Economics, Michigan State University, East Lansing, MI 48824-1039 (United States); Ricketts, Taylor H. [Conservation Science Program, World Wildlife Fund - U.S., Washington, DC 20037 (United States); Kremen, Claire [Department of Environmental Science Policy and Management, University of California, Berkeley, CA 94720-3114 (United States); Carney, Karen [U.S. Agency for International Development, Biodiversity and Forestry Team, Washington, DC 20523 (United States)

    2007-12-15

    Agricultural ecosystems are actively managed by humans to optimize the provision of food, fiber, and fuel. These ecosystem services from agriculture, classified as provisioning services by the recent Millennium Ecosystem Assessment, depend in turn upon a web of supporting and regulating services as inputs to production (e.g., soil fertility and pollination). Agriculture also receives ecosystem dis-services that reduce productivity or increase production costs (e.g., herbivory and competition for water and nutrients by undesired species). The flows of these services and dis-services directly depend on how agricultural ecosystems are managed and upon the diversity, composition, and functioning of remaining natural ecosystems in the landscape. Managing agricultural landscapes to provide sufficient supporting and regulating ecosystem services and fewer dis-services will require research that is policy-relevant, multidisciplinary and collaborative. This paper focuses on how ecosystem services contribute to agricultural productivity and how ecosystem dis-services detract from it. We first describe the major services and dis-services as well as their key mediators. We then explore the importance of scale and economic externalities for the management of ecosystem service provision to agriculture. Finally, we discuss outstanding issues in regard to improving the management of ecosystem services and dis-services to agriculture. (author)

  8. 78 FR 8589 - Verizon Services Corporation, Customer Services Clerk, General Clerk, Clarksburg, WV; Notice of...

    Science.gov (United States)

    2013-02-06

    ... Employment and Training Administration Verizon Services Corporation, Customer Services Clerk, General Clerk... of Verizon Services Corporation, Customer Services Clerk, General Clerk, Clarksburg, West Virginia... country the supply of services like or directly competitive with those supplied by the workers and did not...

  9. A Model for Service Life Control of Selected Device Systems

    Directory of Open Access Journals (Sweden)

    Zieja Mariusz

    2014-04-01

    Full Text Available This paper presents a way of determining distribution of limit state exceedence time by a diagnostic parameter which determines accuracy of maintaining zero state. For calculations it was assumed that the diagnostic parameter is deviation from nominal value (zero state. Change of deviation value occurs as a result of destructive processes which occur during service. For estimation of deviation increasing rate in probabilistic sense, was used a difference equation from which, after transformation, Fokker-Planck differential equation was obtained [4, 11]. A particular solution of the equation is deviation increasing rate density function which was used for determining exceedance probability of limit state. The so-determined probability was then used to determine density function of limit state exceedance time, by increasing deviation. Having at disposal the density function of limit state exceedance time one determined service life of a system of maladjustment. In the end, a numerical example based on operational data of selected aircraft [weapon] sights was presented. The elaborated method can be also applied to determining residual life of shipboard devices whose technical state is determined on the basis of analysis of values of diagnostic parameters.

  10. Service design as an approach to new service development : reflections and futures studies

    OpenAIRE

    Yu, Eun; Sangiorgi, Daniela

    2014-01-01

    This paper illustrates how, although Service Design has been described as evolving from a narrow description of a phase in New Service Development (NSD) to an approach to Service Innovation, the current Service Design research is still focused on the initial stages of NSD. Comparing existing Service Design research with foundational knowledge on NSD, the authors have proposed two complementary directions for future Service Design studies: 1) the expansion of ‘service design as a phase’ to inv...

  11. Determinants of customer satisfaction with service encounter

    OpenAIRE

    Ariana Nefat; Nika Paus

    2008-01-01

    Service encounters are the focal point of a customer’s perception of a service in terms of its quality, value and customer satisfaction. The paper researches the influence of the components of a service encounter on customer satisfaction. Among several factors that determine customer satisfaction the quality of service, which is related to the characteristics of service, plays an important role. However, a direct insight into the reasons that make a service encounter satisfactory or unsatisfa...

  12. Service Innovations

    DEFF Research Database (Denmark)

    Sørensen, Lene Tolstrup; Nicolajsen, Hanne Westh

    2010-01-01

    This article discusses the challenges in relation to an ongoing project named converged advanced mobile media platform (CAMMP), where all the different stakeholders need to have a saying in the service development for the upcoming rich, mobile broadcasting services.......This article discusses the challenges in relation to an ongoing project named converged advanced mobile media platform (CAMMP), where all the different stakeholders need to have a saying in the service development for the upcoming rich, mobile broadcasting services....

  13. Service marketing

    Directory of Open Access Journals (Sweden)

    Babić-Hodović Vesna

    2002-01-01

    Full Text Available Development of postindustrial society and services revolution created numerous changes in size of consumer demand, consumer reaction and priorities. Continuous change on the side of demand and offer must follow changes in marketing orientation. Leader in that change is services marketing which by knowing services range and all the changes builds a new concept called Relationship Marketing.

  14. IGP Services

    Science.gov (United States)

    Smith, Warren

    2003-01-01

    The goal is location-independent computing. Implementing a set of services to satisfy this goal, build upon the GLOBUS toolkit services, and implementing with OGSA. Current status includes: Event service, Job manager, Resource selector and Broker, Next versions in development.Development includes: Monitoring and testing, Portability manager, Performance prediction, Dynamic accounting, and MDS evaluation.

  15. 78 FR 15123 - Financial Management Service; Proposed Collection of Information: Accountable Official...

    Science.gov (United States)

    2013-03-08

    ... Fiscal Service Financial Management Service; Proposed Collection of Information: Accountable Official... Management Service, Fiscal Service, Treasury. ACTION: Notice and Request for comments. SUMMARY: The Financial.... ADDRESSES: Direct all written comments to Financial Management Service, Records and Information Management...

  16. Influence of employees' service-oriented behavior on service quality

    Directory of Open Access Journals (Sweden)

    Vučković Jelisaveta

    2015-01-01

    Full Text Available In order to constantly improve the quality of service program, organizations in tourism industry, have to pay special attention to managing employees' behavior, especially those in the first line of service provision and their direct superiors. Encouraging the employees towards service-oriented behavior is greatly determined by the adequate and consistent implementation of human resources management instruments. The subject of this research is an empirical examination of relations between employees' behavior in the service providing process and service quality. This research was conducted during 2012, in a five-star hotel 'Izvor', situated in Arandjelovac.

  17. Forecasting economic aspects of future wireless services

    DEFF Research Database (Denmark)

    Falch, Morten; Henten, Anders; Saugstrup, Dan

    services be shaped like the Internet today with a large number of independent information providers offering their services directly to the customers? This deliverable will analyse economic models for delivery of ‘3G and beyond’ wireless Internet services, and assess the types of services that will drive...

  18. 7 CFR 3550.151 - Servicing goals.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 15 2010-01-01 2010-01-01 false Servicing goals. 3550.151 Section 3550.151 Agriculture Regulations of the Department of Agriculture (Continued) RURAL HOUSING SERVICE, DEPARTMENT OF AGRICULTURE DIRECT SINGLE FAMILY HOUSING LOANS AND GRANTS Regular Servicing § 3550.151 Servicing goals....

  19. Directing Creativity

    DEFF Research Database (Denmark)

    Darsø, Lotte; Ibbotson, Piers

    2008-01-01

    In this article we argue that leaders facing complex challenges can learn from the arts, specifically that leaders can learn by examining how theatre directors direct creativity through creative constraints. We suggest that perceiving creativity as a boundary phenomenon is helpful for directing it....... Like leaders, who are caught in paradoxical situations where they have to manage production and logistics simultaneously with making space for creativity and innovation, theatre directors need to find the delicate balance between on one hand renewal of perceptions, acting and interaction...... and on the other hand getting ready for the opening night. We conclude that the art of directing creativity is linked to developing competencies of conscious presence, attention and vigilance, whereas the craft of directing creativity concerns communication, framing and choice....

  20. Future directions.

    Science.gov (United States)

    Raffa, Robert B; Tallarida, Ronald J

    2010-01-01

    The chapters of this book summarize much of what has been done and reported regarding cancer chemotherapy-related cognitive impairment. In this chapter, we point out some future directions for investigation.

  1. [Draft] Effects of alternatives of the Bison and Elk Management Planning Document/EIS on the ability of the U.S. Fish and Wildlife Service to fulfill legal directives

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This technical report in support of the Bison and Elk Management Planning Document/EIS for the National Elk Refuge and Grand Teton National Park. This draft report...

  2. Cable networks, services, and management

    CERN Document Server

    2015-01-01

    Cable Networks, Services, and Management is the first book to cover cable networks, services, and their management, in-depth, for network operators, engineers, researchers, and students. Thirteen experts in various fields have contributed their knowledge of network architectures and services, Operations, Administration, Maintenance, Provisioning, Troubleshooting (OAMPT) for residential and business services, cloud, Software Defined Networks (SDN), as well as virtualization concepts and their applications as part of the future directions of cable networks. The book begins by introducing architecture and services for Data Over Cable Service Interface Specification (DOCSIS) 3.0/ 3.1, Converged Cable Access Platform (CCAP), Content Distribution Networks (CDN, IP TV, and Packet Cable and Wi-Fi for Residential Services. Topics that are discussed in proceeding chapters include: operational systems and management architectures, service orders, provisioning, fault manageme t, performance management, billing systems a...

  3. Possibilities and forms internationalisation of business services

    OpenAIRE

    Majchrzak, М.; P. Niedzielski

    2013-01-01

    Due to technological progress, business services have a significant share in exports and imports of services. About 30% of business service providers provide them off-site location, which means that direct contact with the recipient service provider for these services is not necessary. Availability and better services for business means that many companies are choosing to externalizing large part of the services entrusted them shared service centers. У зв'язку з технічним прогресом бізнес-пос...

  4. Directed Replacement

    CERN Document Server

    Karttunen, L

    1996-01-01

    This paper introduces to the finite-state calculus a family of directed replace operators. In contrast to the simple replace expression, UPPER -> LOWER, defined in Karttunen (ACL-95), the new directed version, UPPER @-> LOWER, yields an unambiguous transducer if the lower language consists of a single string. It transduces the input string from left to right, making only the longest possible replacement at each point. A new type of replacement expression, UPPER @-> PREFIX ... SUFFIX, yields a transducer that inserts text around strings that are instances of UPPER. The symbol ... denotes the matching part of the input which itself remains unchanged. PREFIX and SUFFIX are regular expressions describing the insertions. Expressions of the type UPPER @-> PREFIX ... SUFFIX may be used to compose a deterministic parser for a ``local grammar'' in the sense of Gross (1989). Other useful applications of directed replacement include tokenization and filtering of text streams.

  5. Directing Creativity

    DEFF Research Database (Denmark)

    Darsø, Lotte; Ibbotson, Piers

    2008-01-01

    In this article we argue that leaders facing complex challenges can learn from the arts, specifically that leaders can learn by examining how theatre directors direct creativity through creative constraints. We suggest that perceiving creativity as a boundary phenomenon is helpful for directing it....... Like leaders, who are caught in paradoxical situations where they have to manage production and logistics simultaneously with making space for creativity and innovation, theatre directors need to find the delicate balance between on one hand renewal of perceptions, acting and interaction...

  6. Dosimetry Service

    CERN Multimedia

    2006-01-01

    Cern Staff and Users can now consult their dose records for an individual or an organizational unit with HRT. Please see more information on our web page: http://cern.ch/rp-dosimetry Dosimetry Service is open every morning from 8.30 - 12.00. Closed in the afternoons. We would like to remind you that dosimeters cannot be sent to customers by internal mail. Short-term dosimeters (VCT's) must always be returned to the Service after the use and must not be left on the racks in the experimental areas or in the secretariats. Dosimetry Service Tel. 7 2155 Dosimetry.service@cern.ch http://cern.ch/rp-dosimetry

  7. Direct marketing

    Directory of Open Access Journals (Sweden)

    Čičić Muris

    2002-01-01

    Full Text Available Direct Marketing (DM is usually treated as unworthy activity, with actions at the edge of legality and activities minded cheating. Despite obvious problems regarding ethics and privacy threat, DM with its size, importance and role in a concept of integrated marketing communication deserves respect and sufficient analysis and review

  8. CDBG Public Services Activity

    Data.gov (United States)

    Department of Housing and Urban Development — CDBG activity related to public services, including senior services, legal services, youth services, employment training, health services, homebuyer counseling, food...

  9. Evosystem Services: Rapid Evolution and the Provision of Ecosystem Services.

    Science.gov (United States)

    Rudman, Seth M; Kreitzman, Maayan; Chan, Kai M A; Schluter, Dolph

    2017-06-01

    Evolution is recognized as the source of all organisms, and hence many ecosystem services. However, the role that contemporary evolution might play in maintaining and enhancing specific ecosystem services has largely been overlooked. Recent advances at the interface of ecology and evolution have demonstrated how contemporary evolution can shape ecological communities and ecosystem functions. We propose a definition and quantitative criteria to study how rapid evolution affects ecosystem services (here termed contemporary evosystem services) and present plausible scenarios where such services might exist. We advocate for the direct measurement of contemporary evosystem services to improve understanding of how changing environments will alter resource availability and human well-being, and highlight the potential utility of managing rapid evolution for future ecosystem services. Copyright © 2017 Elsevier Ltd. All rights reserved.

  10. Bridging the gap between legacy services and Web Services

    DEFF Research Database (Denmark)

    Bissyandé, Tegawendé; Réveillère, Laurent; Bromberg, Yérom-David

    2010-01-01

    . A promising solution is to implement wrappers to translate between the application layer protocols and the WS protocol. Doing so manually, however, requires a high level of expertise, in the relevant application layer protocols, in low-level network and system programming, and in the Web Service paradigm......Web Services is an increasingly used instantiation of Service-Oriented Architectures (SOA) that relies on standard Internet protocols to produce services that are highly interoperable. Other types of services, relying on legacy application layer protocols, however, cannot be composed directly...... itself. In this paper, we introduce a generative language based approach for constructing wrappers to facilitate the migration of legacy service functionalities to Web Services. To this end, we have designed the Janus domain-specific language, which provides developers with a high-level way to describe...

  11. Influence of Public Relations and Reference Services on Academic ...

    African Journals Online (AJOL)

    Keywords: Academic Library, library services, Public relations, Reference Services ... reference services as the direct personal help given by librarian to a ... helps make management aware of public opinion and .... information centre. If local ...

  12. Registration Service

    CERN Multimedia

    GS Department

    2010-01-01

    Following a reorganization in Building 55, please note that the Registration Service is now organised as follows :  Ground floor: access cards (76903). 1st floor : registration of external firms’ personnel (76611 / 76622); car access stickers (76633); biometric registration (79710). Opening hours: 07-30 to 16-00 non-stop. GS-SEM Group General Infrastructure Services Department

  13. Telephone Service

    CERN Multimedia

    2005-01-01

    As part of the upgrade of telephone services, the CERN exchange switches will be updated on Thursday 2 June between 7.00 p.m. and midnight. Telephone services may be affected and possibly even disrupted during this operation. 

  14. Mains and Service Installations Take a Directional Turn%主管和分支管线铺设使水平定向钻进出现转机

    Institute of Scientific and Technical Information of China (English)

    JimSchill

    2004-01-01

    Directional drilling continues to be a viable and useful technology in many sectors. The water,gas and electric industries utilize the technology in a variety of areas. In fact, “last mile” installations and “street to the house” utility installations are proving to be a growing market for compact directional drills in North America.

  15. IoT Service Clustering for Dynamic Service Matchmaking.

    Science.gov (United States)

    Zhao, Shuai; Yu, Le; Cheng, Bo; Chen, Junliang

    2017-07-27

    As the adoption of service-oriented paradigms in the IoT (Internet of Things) environment, real-world devices will open their capabilities through service interfaces, which enable other functional entities to interact with them. In an IoT application, it is indispensable to find suitable services for satisfying users' requirements or replacing the unavailable services. However, from the perspective of performance, it is inappropriate to find desired services from the service repository online directly. Instead, clustering services offline according to their similarity and matchmaking or discovering service online in limited clusters is necessary. This paper proposes a multidimensional model-based approach to measure the similarity between IoT services. Then, density-peaks-based clustering is employed to gather similar services together according to the result of similarity measurement. Based on the service clustering, the algorithms of dynamic service matchmaking, discovery, and replacement will be performed efficiently. Evaluating experiments are conducted to validate the performance of proposed approaches, and the results are promising.

  16. Direct ELISA.

    Science.gov (United States)

    Lin, Alice V

    2015-01-01

    First described by Engvall and Perlmann, the enzyme-linked immunosorbent assay (ELISA) is a rapid and sensitive method for detection and quantitation of an antigen using an enzyme-labeled antibody. Besides routine laboratory usage, ELISA has been utilized in medical field and food industry as diagnostic and quality control tools. Traditionally performed in 96-well or 384-well polystyrene plates, the technology has expanded to other platforms with increase in automation. Depending on the antigen epitope and availability of specific antibody, there are variations in ELISA setup. The four basic formats are direct, indirect, sandwich, and competitive ELISAs. Direct ELISA is the simplest format requiring an antigen and an enzyme-conjugated antibody specific to the antigen. This chapter describes the individual steps for detection of a plate-bound antigen using a horseradish peroxidase (HRP)-conjugated antibody and luminol-based enhanced chemiluminescence (ECL) substrate. The methodological approach to optimize the assay by chessboard titration is also provided.

  17. Directing Lives

    Institute of Scientific and Technical Information of China (English)

    1999-01-01

    YANG Yang is he director of China Television PlayCenter.Before the arrival of the series Holding Hands,she filmed television plays reflecting women and marriage.Examples of her work include Niu Yuqin and Her Trees and theMidnight Trolley.The artistry and sympathy towards women inthese programmes make it obvious that they were directed by awoman.Holding Hands especially cements this connection.

  18. 78 FR 44523 - Burned Area Emergency Response, Forest Service

    Science.gov (United States)

    2013-07-24

    ... Forest Service RIN 0596-AC73 Burned Area Emergency Response, Forest Service AGENCY: Forest Service, USDA... Service is correcting a notice of interim directive that appeared in the Federal Register of June 6, 2013... Area Emergency Response revisions. This correction lists the Web site for the interim directive and...

  19. 78 FR 34031 - Burned Area Emergency Response, Forest Service

    Science.gov (United States)

    2013-06-06

    ...; ] DEPARTMENT OF AGRICULTURE Forest Service RIN 0596-AC73 Burned Area Emergency Response, Forest Service AGENCY: Forest Service, USDA. ACTION: Notice of interim directive; request for public comment. SUMMARY: The Forest Service is issuing an interim directive to guide its employees in revised procedures for...

  20. Psychosocial Dynamics of College Students' Use of Mental Health Services

    Science.gov (United States)

    Rosenthal, Beth Spenciner; Wilson, William Cody

    2016-01-01

    The authors present and empirically test a multivariate model of the use of mental health counseling services. Use of such services by 1st-year college students is directly a result of need for these services and willingness to use them. Beliefs about mental health services and demographic characteristics are not directly related to use, but…

  1. IT Service

    Data.gov (United States)

    Department of Homeland Security — Means of delivering value to customers by facilitating outcomes customers want to achieve without the ownership of specific costs and risks. The term 'service' is...

  2. Serviced Living

    Institute of Scientific and Technical Information of China (English)

    LIU BO

    2006-01-01

    @@ As recently as ten years ago,the term serviced apartment made no sense to most people living in Beijing and residing in hotels was the only options for foreign visitors. But since then, serviced apartments have begun to appear in big cities all around China. In Beijing alone, it is estimated that there are more than 30,000service apartments spread across dozens of properties occupying a space of more than I million square meters. Concentrating in the Financial Street, the Central Business District and Zhongguancun, also known as China's Silicon Valley, the explosion in service apartments in the city continues to be fueled by the influx of overseas and domestic business people.

  3. Transplant services

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/article/007457.htm Transplant services To use the sharing features on this ... are comfortable before, during, and after surgery. Information Transplant surgery is typically done to replace a diseased ...

  4. Service modelling

    NARCIS (Netherlands)

    Steen, M.W.A.; Iacob, Maria Eugenia; Lankhorst, M.M.; Jonkers, H.; Zoet, M.; Engelsman, W.; Versendaal, J.; Proper, H.A.; Debije, L.; Gaaloul, K.; Lankhorst, M.

    2012-01-01

    The development of enterprise services involves making design decisions at different levels, ranging from strategic to infrastructural choices, and concerning many different aspects, ranging from customer interaction to information registration concerns. In order to support an agile development

  5. Service Oriented E-Government

    Science.gov (United States)

    Stoll, Margareth; Laner, Dietmar, Dr.

    Due to different directives, the growing request for citizen-orientation, improved service quality, effectiveness, efficiency, transparency and reduction of costs, as well as administrative burden public administrations apply increasingly management tools and IT for continual service development and sustainable citizens' satisfaction. Therefore public administrations implement always more standard based management systems, such as quality ISO9001, environmental ISO 14001 or others. Due to this situation we used in different case studies as basis for e-government a the administration adapted, holistic administration management model to analyze stakeholder requirements and to integrate, harmonize and optimize services, processes, data, directives, concepts and forms. In these case studies the developed and consequently implemented holistic administration management model promotes constantly over more years service effectiveness, citizen satisfaction, efficiency, cost reduction, shorter initial training periods for new collaborators, employee involvement for sustainable citizen-oriented service improvement and organizational development.

  6. Research on Developmental Direction of Mobile Payment Services for China Unicom Nanjing Branch%中国联通南京市分公司移动支付业务发展方向的研究

    Institute of Scientific and Technical Information of China (English)

    沙甲戊; 施晓光

    2016-01-01

    Firstly, the developmental status of mobile payment services for Nanjing Unicom was introduced. The developmental obstacle of mobile payment was analyzed and some attentions of mobile payment service development were summarized. Then, according to the circumstance of market competition in Nanjing district, the market opportunity was discovered. Finally, in the light of market opportunity, the innovative idea mobile payment service development suitable for the actual status of Nanjing Unicom was positioned and designed.%首先介绍了南京联通移动支付业务发展现状,通过对移动支付业务发展痛点的分析,归纳出移动支付业务发展的注意事项,接着根据南京地区的市场竞争环境情况,挖掘出了其中的市场机会,最后从市场机会出发,定位设计出了符合南京联通实际现状的移动支付业务发展的创新主张。

  7. 47 CFR 101.115 - Directional antennas.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Directional antennas. 101.115 Section 101.115... SERVICES Technical Standards § 101.115 Directional antennas. (a) Unless otherwise authorized upon specific... antenna adjusted with the center of the major lobe of radiation in the horizontal plane directed...

  8. Future direction of direct writing

    Science.gov (United States)

    Kim, Nam-Soo; Han, Kenneth N.

    2010-11-01

    Direct write technology using special inks consisting of finely dispersed metal nanoparticles in liquid is receiving an undivided attention in recent years for its wide range of applicability in modern electronic industry. The application of this technology covers radio frequency identification-tag (RFID-tag), flexible-electronics, organic light emitting diodes (OLED) display, e-paper, antenna, bumpers used in flip-chip, underfilling, frit, miniresistance applications and biological uses, artificial dental applications and many more. In this paper, the authors have reviewed various direct write technologies on the market and discussed their advantages and shortfalls. Emphasis has given on microdispensing deposition write (MDDW), maskless mesoscale materials deposition (M3D), and ink-jet technologies. All of these technologies allow printing various patterns without employing a mask or a resist with an enhanced speed with the aid of computer. MDDW and M3D are capable of drawing patterns in three-dimension and MDDW, in particular, is capable of writing nanoinks with high viscosity. However, it is still far away for direct write to be fully implemented in the commercial arena. One of the hurdles to overcome is in manufacturing conductive inks which are chemically and physically stable, capable of drawing patterns with acceptable conductivity, and also capable of drawing patterns with acceptable adhesiveness with the substrates. The authors have briefly discussed problems involved in manufacturing nanometal inks to be used in various writing devices. There are numerous factors to be considered in manufacturing such inks. They are reducing agents, concentrations, oxidation, compact ability allowing good conductivity, and stability in suspension.

  9. 42 CFR 482.55 - Condition of participation: Emergency services.

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 5 2010-10-01 2010-10-01 false Condition of participation: Emergency services. 482... Optional Hospital Services § 482.55 Condition of participation: Emergency services. The hospital must meet...: Organization and direction. If emergency services are provided at the hospital— (1) The services must...

  10. 28 CFR 35.162 - Telephone emergency services.

    Science.gov (United States)

    2010-07-01

    ... 28 Judicial Administration 1 2010-07-01 2010-07-01 false Telephone emergency services. 35.162... IN STATE AND LOCAL GOVERNMENT SERVICES Communications § 35.162 Telephone emergency services. Telephone emergency services, including 911 services, shall provide direct access to individuals who use...

  11. Advance care directives

    Science.gov (United States)

    ... advance directive; Do-not-resuscitate - advance directive; Durable power of attorney - advance care directive; POA - advance care directive; Health care agent - advance care directive; Health care proxy - ...

  12. 45 CFR 96.44 - Community services.

    Science.gov (United States)

    2010-10-01

    ... 45 Public Welfare 1 2010-10-01 2010-10-01 false Community services. 96.44 Section 96.44 Public... Indian Tribes and Tribal Organizations § 96.44 Community services. (a) This section applies to direct funding of Indian tribes and tribal organizations under the community services block grant. (b) The...

  13. Strategies and Direction of the Information Resources Integration and Information Services Integration Viewed from Current Situation%从现状看我国信息资源整合、信息服务整合战略和发展方向

    Institute of Scientific and Technical Information of China (English)

    翁和永; 郁笑春

    2011-01-01

    The problems of information resources integration and information services integration are analysed, the necessity of the integration of information resources and information services are expounded. The internal and external environments of information resources integration and information services integration , and the current situation is discussed based on the some cases in China and abroad. Direction and strategies of the integration of information resources and information services are proposed.%对信息资源整合和信息服务整合存在的问题进行分析,对信息资源与信息服务整合必要性进行阐述,研究信息资源整合和信息服务整合的内外部环境,并结合整合案例分析国内外现状,提出信息资源与信息服务整合的发展方向与对策。

  14. Exploring service development for understanding Schumpeterian innovation in service firms: the deduction of special case criteria

    OpenAIRE

    Flikkema, Meindert

    2005-01-01

    The identification of innovation in services is problematic. This seems remarkable, since many papers have emerged, which emphasize distinctive features of service innovation. However, some of these contributions strain the Schumpeterian innovation opinion or describe in fact the role of service firms in systems of innovation. In the present paper service innovation is concerned as a special case of service development and a direct reference to Schumpeter is made as Drejer proposes (Drejer, I...

  15. Service refinement

    Institute of Scientific and Technical Information of China (English)

    HE JiFeng

    2008-01-01

    This paper presents a refinement calculus for service components. We model the behaviour of individual service by a guarded design, which enables one to separate the responsibility of clients from the commitment made by the system, and to iden-tify a component by a set of failures and divergences. Protocols are introduced to coordinate the interactions between a component with the external environment. We adopt the notion of process refinement to formalize the substitutivity of components, and provide a complete proof method based on the notion of simulations.

  16. Innovation in Services: From Service Concepts to Service Experiences

    OpenAIRE

    Fynes, Brian; Lally, Anne Marie

    2008-01-01

    ABSTRACT Identifying the nature of service experiences is recognised As being of primary importance in the shaping of an enhanced competitive position for industry; however service managers often have difficulty articulating the true nature of their service concept. The definition of service concept is a fundamental part of the strategic advantage seeking Processes of service design, service development and service innovation. In response to the competitive Imperative for improved product/...

  17. Innovation in Services: From Service Concepts to Service Experiences

    OpenAIRE

    Fynes, Brian; Lally, Anne Marie

    2008-01-01

    ABSTRACT Identifying the nature of service experiences is recognised As being of primary importance in the shaping of an enhanced competitive position for industry; however service managers often have difficulty articulating the true nature of their service concept. The definition of service concept is a fundamental part of the strategic advantage seeking Processes of service design, service development and service innovation. In response to the competitive Imperative for improved product/...

  18. PFInancial services

    Index Scriptorium Estoniae

    2002-01-01

    Briti ettevõttest International Financial Services, mis viib maailmas läbi kampaaniat PPP (Public Private Partnership) ja PFI (Private Finance Initiative) - erasektori ja avaliku sektori vahelise koostöö reklaamimiseks ja edendamiseks. Firma esindajad kohtusid Eesti ametnikega

  19. Refrigeration Servicing.

    Science.gov (United States)

    Hamilton, Donald L.; And Others

    This self-study course is designed to familiarize Marine enlisted personnel with the services required to be performed on refrigeration equipment. The course contains four study units. Each study unit begins with a general objective, which is a statement of what the student should learn from the unit. The study units are divided into numbered work…

  20. Mail Service

    CERN Multimedia

    TS-FM Group

    2004-01-01

    Tuesday 19 October 2004 Please note that the distribution and collection of mail are likely to be disrupted on Tuesday, October 19, 2004, because of traffic and other restrictions enforced on that day in connection with CERN's fiftieth anniversary celebrations. The service may be completely interrupted in certain areas. Group TS-FM, Tel. 77551

  1. PFInancial services

    Index Scriptorium Estoniae

    2002-01-01

    Briti ettevõttest International Financial Services, mis viib maailmas läbi kampaaniat PPP (Public Private Partnership) ja PFI (Private Finance Initiative) - erasektori ja avaliku sektori vahelise koostöö reklaamimiseks ja edendamiseks. Firma esindajad kohtusid Eesti ametnikega

  2. 47 CFR 73.152 - Modification of directional antenna data.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Modification of directional antenna data. 73... SERVICES RADIO BROADCAST SERVICES AM Broadcast Stations § 73.152 Modification of directional antenna data. (a) If, after construction and final adjustment of a directional antenna, a measured inverse...

  3. 47 CFR 73.150 - Directional antenna systems.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Directional antenna systems. 73.150 Section 73... BROADCAST SERVICES AM Broadcast Stations § 73.150 Directional antenna systems. (a) For each station employing a directional antenna, all determinations of service provided and interference caused shall...

  4. Documentation Service; Service de Documentation

    Energy Technology Data Exchange (ETDEWEB)

    Charnay, J.; Chosson, L.; Croize, M.; Ducloux, A.; Flores, S.; Jarroux, D.; Melka, J.; Morgue, D.; Mottin, C. [Inst. de Physique Nucleaire, Lyon-1 Univ., 69 - Villeurbanne (France)

    1998-12-31

    This service assures the treatment and diffusion of the scientific information and the management of the scientific production of the institute as well as the secretariat operation for the groups and services of the institute. The report on documentation-library section mentions: the management of the documentation funds, search in international databases (INIS, Current Contents, Inspects), Pret-Inter service which allows accessing documents through DEMOCRITE network of IN2P3. As realizations also mentioned are: the setup of a video, photo database, the Web home page of the institute`s library, follow-up of digitizing the document funds by integrating the CD-ROMs and diskettes, electronic archiving of the scientific production, etc 1 fig.

  5. Ecosystem Services : In Nordic Freshwater Management

    DEFF Research Database (Denmark)

    Magnussen, Kristin; Hasler, Berit; Zandersen, Marianne

    framework in freshwater management, particularly water management according to the Water Framework Directive (WFD). There are several examples of how ecosystem services have been used in WFD related studies in all the Nordic countries. Most of them involve listing, describing and categorizing freshwater...... ecosystem services, while there are few comprehensive Cost Benefit Analyses and analyses of disproportionate costs that apply this framework. More knowledge about ecosystem services and the value of ecosystem services for freshwater systems is needed....

  6. Repercussions of the Water Framework Directive on the prices of urban water services; Repercusion de la Directiva Marco del Agua en la tarifas de los servicios de aguas urbanas

    Energy Technology Data Exchange (ETDEWEB)

    Ardoy, J. M.

    2007-07-01

    The Water Framework directive obliges European Union member countries to comply with a number of requirements in order to achieve good water quality. to this end, the bodies-public, private and mixed-responsible for the integral water cycle will have to bear new costs in providing infrastructures, installations and equipment to improve water quality, which will lead to a new pricing policy allowing them to recover these costs. However, these new prices must be introduced gradually, as they will raise the price of water for all users, from professionals (irrigation, industry, etc.) to private individuals. (Author)

  7. Computing Services

    Science.gov (United States)

    2008-08-08

    Speed in delivering capacity to the datacenter floor – Managed services partnerships • ITIL -based processes 4 Virtualization & Application Stacking...House” Communications 129 450 1140 482 232 117 MAINFRAME ROUTERS SWITCHES SECURITY MANAGEMENT STORAGE Communication Devices by Function Terminal...to protect and enforce security boundaries • Managing content as an extension of the glass house (e.g., GCDS) Communication Provider(s) Value Added

  8. Dosimetry Service

    CERN Multimedia

    Dosimetry Service

    2005-01-01

    Please remember to read your dosimeter at least once every month. A regular read-out is indispensable to ensure periodic monitoring of your personal dose. You must read your dosimeter even if you have not visited the controlled areas. Film badges are no longer valid at CERN and holders of film badges are no longer allowed to enter the controlled radiation areas or work with a source. Dosimetry Service Tel. 72155 http://cern.ch/rp-dosimetry

  9. Forecasting economic aspects of future wireless services

    DEFF Research Database (Denmark)

    Falch, Morten; Henten, Anders; Saugstrup, Dan

    based services may be delivered through collaboration between network operators and content providers. How can this market be expected to develop? Will the network operators act as system integrators connecting customers and content providers in a walled garden approach or will the market for wireless...... services be shaped like the Internet today with a large number of independent information providers offering their services directly to the customers? This deliverable will analyse economic models for delivery of ‘3G and beyond’ wireless Internet services, and assess the types of services that will drive......The topic for this deliverable is to assess the future economic setup and implications of wireless services. While provision of basic wireless communication services such as voice and messaging services usually are delivered as end-to-end services by the network operator, the market for content...

  10. Classification of ERP System Services

    Directory of Open Access Journals (Sweden)

    Petr Sodomka

    2016-07-01

    Full Text Available Today the ERP business information systems are an essential tool for organization management, regardless of size and field of activity. Their successful implementation and use is conditioned predominantly by IS/ICT knowledge and managerial skills required for directing their life cycle correctly. Defining and correct setting of the service level is a key requirement and skill, usually provided by a service provider based on an implementation and service contract, or an advisory organization, in particular when presale services concerning analyses and tender documentation processing are provided. The following paper discusses the characteristics of the individual service types and the particulars of their practical use. Moreover, it presents the selected significant results of the long-term research performed by the authors in the Center for inVestigations into Information Systems.

  11. RESTful Web Services at BNL

    Energy Technology Data Exchange (ETDEWEB)

    Casella, R.

    2011-06-14

    RESTful (REpresentational State Transfer) web services are an alternative implementation to SOAP/RPC web services in a client/server model. BNLs IT Division has started deploying RESTful Web Services for enterprise data retrieval and manipulation. Data is currently used by system administrators for tracking configuration information and as it is expanded will be used by Cyber Security for vulnerability management and as an aid to cyber investigations. This talk will describe the implementation and outstanding issues as well as some of the reasons for choosing RESTful over SOAP/RPC and future directions.

  12. Volunteer Service and Service Learning: Opportunities, Partnerships, and United Nations Millennium Development Goals.

    Science.gov (United States)

    Dalmida, Safiya George; Amerson, Roxanne; Foster, Jennifer; McWhinney-Dehaney, Leila; Magowe, Mabel; Nicholas, Patrice K; Pehrson, Karen; Leffers, Jeanne

    2016-09-01

    This article explores approaches to service involvement and provides direction to nurse leaders and others who wish to begin or further develop global (local and international) service or service learning projects. We review types of service involvement, analyze service-related data from a recent survey of nearly 500 chapters of the Honor Society of Nursing, Sigma Theta Tau International (STTI), make recommendations to guide collaborative partnerships and to model engagement in global and local service and service learning. This article offers a literature review and describes results of a survey conducted by the STTI International Service Learning Task Force. Results describe the types of service currently conducted by STTI nursing members and chapters, including disaster response, service learning, and service-related responses relative to the Millennium Development Goals (MDGs). The needs of chapter members for information about international service are explored and recommendations for promoting global service and sustainability goals for STTI chapters are examined. Before engaging in service, volunteers should consider the types of service engagement, as well as the design of projects to include collaboration, bidirectionality, sustainability, equitable partnerships, and inclusion of the United Nations Sustainable Development Goals. STTI supports the learning, knowledge, and professional development of nurses worldwide. International service and collaboration are key to the advancement of the nursing profession. Culturally relevant approaches to international service and service learning are essential to our global organization, as it aims to impact the health status of people globally. © 2016 Sigma Theta Tau International.

  13. Using Service Scenarios to Model Business Services

    DEFF Research Database (Denmark)

    Bækgaard, Lars

    The purpose of the paper is to present and evaluate the notion of service scenarios. A service is work done by a service executor in interaction with a service consumer. A service scenario is a model of a service system and the roles that are played by the actors participating and interacting dur...... of a case study in a public library. The case study indicates that service systems should be understood as socio-technical systems in which service executors and service consumers co-create value in mutual interaction with each other and with a set of shared resources....

  14. Service registry design: an information service approach

    NARCIS (Netherlands)

    Ferreira Pires, Luis; Oostrum, van Arjen; Wijnhoven, Fons; Wang, J.

    2010-01-01

    A service registry is a Service-Oriented Architecture (SOA) component that keeps a ‘catalogue’ of available services. It stores service specifications so that these specifications can be found by potential users. Discussions on the design of service registries currently focus on technical issues, wh

  15. Service registry design: an information service approach

    NARCIS (Netherlands)

    Ferreira Pires, Luis; Wang, J.; van Oostrum, Arjen; Wijnhoven, Alphonsus B.J.M.

    2010-01-01

    A service registry is a Service-Oriented Architecture (SOA) component that keeps a ‘catalogue’ of available services. It stores service specifications so that these specifications can be found by potential users. Discussions on the design of service registries currently focus on technical issues,

  16. The service Ouroboros: Designing personas service cycles

    DEFF Research Database (Denmark)

    Gudiksen, Sune Klok; Brandt, Eva

    2014-01-01

    Many companies investigate new business opportunities in a turn from product to service design. As service offerings expand over time and space, such notions as ‘customer journey’ or ‘service blueprint’ have been suggested to grasp and design the nature of the emergent services. However, we find ...... various customers’´service cycles....

  17. MANAGING SERVICE QUALITY

    Directory of Open Access Journals (Sweden)

    Andreea BUDEANU

    2015-04-01

    Full Text Available Services are today the dominant sector of the economic activity both in terms of economic performance and labor utilization. Becoming an essential part of today’s society, they are considered the basis of a healthy economy, fact that has increased the importance of services and the research in the field. One of the biggest challenges regarding this sector is the evaluation and assurance of quality. There is still a lack of unanimity regarding the definitions, measurement procedures and the aspects that need to be provided and measured. Through this article we intend to treat these subjects and provide a broad perspective on this topic. Thus, we hope to highlight some practices and directions that could be relevant for the organizations in this field.

  18. 5 CFR 330.402 - Direct recruitment.

    Science.gov (United States)

    2010-01-01

    ... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false Direct recruitment. 330.402 Section 330.402 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT CIVIL SERVICE REGULATIONS RECRUITMENT, SELECTION, AND PLACEMENT (GENERAL) Positions Restricted to Preference Eligibles § 330.402 Direct recruitment...

  19. 75 FR 15387 - Veterinary Feed Directive

    Science.gov (United States)

    2010-03-29

    ... HUMAN SERVICES Food and Drug Administration 21 CFR Parts 510, 514, and 558 Veterinary Feed Directive... relating to veterinary feed directive (VFD) drugs. FDA's VFD regulation, which became effective on January... CONTACT: Neal Bataller, Center for Veterinary Medicine (HFV-230), Food and Drug Administration,...

  20. Are Services Functions?

    OpenAIRE

    Sumita, Kouhei; Kitamura, Yoshinobu; Sasajima, Munehiko; Mizoguchi, Riichiro

    2012-01-01

    This paper proposes an ontological definition of services. Such a definition is one of the fundamentals of service research. The understanding of essentialities of the notion of services as its definition, which differentiates services from the other notions, contributes proper modeling and conceptualization of services in services design and knowledge management of services. The existing definitions and characteristics of services, however, cannot differentiate services from other concepts: ...

  1. 29 CFR 4.121 - Contracts for individual services.

    Science.gov (United States)

    2010-07-01

    ... 29 Labor 1 2010-07-01 2010-07-01 true Contracts for individual services. 4.121 Section 4.121 Labor...Namara-O'Hara Service Contract Act Specific Exclusions § 4.121 Contracts for individual services. The Act... direct services to a Federal agency by an individual or individuals.” This exemption, which applies...

  2. 34 CFR 300.6 - Assistive technology service.

    Science.gov (United States)

    2010-07-01

    ... 34 Education 2 2010-07-01 2010-07-01 false Assistive technology service. 300.6 Section 300.6... CHILDREN WITH DISABILITIES General Definitions Used in This Part § 300.6 Assistive technology service. Assistive technology service means any service that directly assists a child with a disability in...

  3. Spacecraft Modularity for Serviceable Satellites

    Science.gov (United States)

    Rossetti, Dino; Keer, Beth; Panek, John; Reed, Benjamin; Cepollina, Frank; Ritter, Robert

    2015-01-01

    Satellite servicing has been a proven capability of NASA since the first servicing missions in the 1980s with astronauts on the space shuttle. This capability enabled the on-orbit assembly of the International Space Station (ISS) and saved the Hubble Space Telescope (HST) mission following the discovery of the flawed primary mirror. The effectiveness and scope of servicing opportunities, especially using robotic servicers, is a function of how cooperative a spacecraft is. In this paper, modularity will be presented as a critical design aspect for a spacecraft that is cooperative from a servicing perspective. Different features of modularity are discussed using examples from HST and the Multimission Modular Spacecraft (MMS) program from the 1980s and 1990s. The benefits of modularity will be presented including those directly related to servicing and those outside of servicing including reduced costs and increased flexibility. The new Reconfigurable Operational spacecraft for Science and Exploration (ROSE) concept is introduced as an affordable implementation of modularity that provides cost savings and flexibility. Key aspects of the ROSE architecture are discussed such as the module design and the distributed avionics architecture. The ROSE concept builds on the experience from MMS and due to its modularity, would be highly suitable as a future client for on-orbit servicing.

  4. PhEDEx Data Service

    Science.gov (United States)

    Egeland, Ricky; Wildish, Tony; Huang, Chih-Hao

    2010-04-01

    The PhEDEx Data Service provides access to information from the central PhEDEx database, as well as certificate-authenticated managerial operations such as requesting the transfer or deletion of data. The Data Service is integrated with the "SiteDB" service for fine-grained access control, providing a safe and secure environment for operations. A plug-in architecture allows server-side modules to be developed rapidly and easily by anyone familiar with the schema, and can automatically return the data in a variety of formats for use by different client technologies. Using HTTP access via the Data Service instead of direct database connections makes it possible to build monitoring web-pages with complex drill-down operations, suitable for debugging or presentation from many aspects. This will form the basis of the new PhEDEx website in the near future, as well as providing access to PhEDEx information and certificate-authenticated services for other CMS dataflow and workflow management tools such as CRAB, WMCore, DBS and the dashboard. A PhEDEx command-line client tool provides one-stop access to all the functions of the PhEDEx Data Service interactively, for use in simple scripts that do not access the service directly. The client tool provides certificate-authenticated access to managerial functions, so all the functions of the PhEDEx Data Service are available to it. The tool can be expanded by plug-ins which can combine or extend the client-side manipulation of data from the Data Service, providing a powerful environment for manipulating data within PhEDEx.

  5. PhEDEx Data Service

    Energy Technology Data Exchange (ETDEWEB)

    Egeland, Ricky [University of Minnesota, Twin Cities (United States); Wildish, Tony [Princeton University (United States); Huang, Chih-Hao [Fermi National Accelerator Laboratory (United States)

    2010-04-01

    The PhEDEx Data Service provides access to information from the central PhEDEx database, as well as certificate-authenticated managerial operations such as requesting the transfer or deletion of data. The Data Service is integrated with the 'SiteDB' service for fine-grained access control, providing a safe and secure environment for operations. A plug-in architecture allows server-side modules to be developed rapidly and easily by anyone familiar with the schema, and can automatically return the data in a variety of formats for use by different client technologies. Using HTTP access via the Data Service instead of direct database connections makes it possible to build monitoring web-pages with complex drill-down operations, suitable for debugging or presentation from many aspects. This will form the basis of the new PhEDEx website in the near future, as well as providing access to PhEDEx information and certificate-authenticated services for other CMS dataflow and workflow management tools such as CRAB, WMCore, DBS and the dashboard. A PhEDEx command-line client tool provides one-stop access to all the functions of the PhEDEx Data Service interactively, for use in simple scripts that do not access the service directly. The client tool provides certificate-authenticated access to managerial functions, so all the functions of the PhEDEx Data Service are available to it. The tool can be expanded by plug-ins which can combine or extend the client-side manipulation of data from the Data Service, providing a powerful environment for manipulating data within PhEDEx.

  6. The Service Utility Model in Service Management

    Institute of Scientific and Technical Information of China (English)

    LI Yan; ZHOU Wen-an; SONG Jun-de

    2005-01-01

    Aiming to provide a measurable service Quality of Service (QoS) evaluating method for service inventory management, this paper proposes a new mobile Service Utility Model (SUM), considers the service and business layer elements into the service utility influence profile, and proposes an self-adaptive service inventory management algorithm as a QoS control scheme based on SUM. It can be concluded from the simulation result that the service inventory utility can be fully reflected by SUM and the whole system efficiency is greatly increased by using SUM as the adaptive rule.

  7. Definition and scope of health services administration.

    Science.gov (United States)

    Begun, James W; Kaissi, Amer

    2004-01-01

    The definition and scope of health services administration are important to public policy, educational programs, new entrants to the field, and practitioners. Formal definition of the field of health services administration has not received concerted attention since 1975. Significant changes in the field have occurred since that time, widening opportunities for graduates of educational programs and increasing interdependencies between health services organizations and public policy organizations, supplier organizations, insurers, and other businesses that are not involved directly in health services delivery. Stakeholders in the field of health services administration should consider a broadened definition of the field that would institutionalize and build on those increased opportunities and interdependencies.

  8. Dosimetry Service

    CERN Multimedia

    Dosimetry Service

    2005-01-01

    Please remember to read your dosimeter every month at least once and preferably during the first week. A regular read-out is indispensable in order to ensure a periodic monitoring of the personal dose. You should read your dosimeter even if you have not visited the controlled areas. If you still have the old dosimeter (film badge), please send it immediately for evaluation to us (Bdg 24 E-011). After January 2005 there will be no developing process for the old film system. Information for Contractors: Please remember also to bring the form ‘Confirm Reception of a CERN Dosimeter' signed with ‘Feuille d'enregistrement du CERN'. Without these forms the dosimeter cannot be assigned. Thank you for your cooperation. Dosimetry Service Tel 767 2155 http://cern.ch/rp-dosimetry

  9. Soil-based ecosystem services

    DEFF Research Database (Denmark)

    Ghaley, Bhim Bahadur; Porter, John Roy; Sandhu, Harpinder S.

    2014-01-01

    Among the soil-based ecosystem services (ES), nutrient cycling and carbon sequestration have direct influence on the biogeochemical cycles and greenhouse gas emissions affecting provision of other ES that support human existence. We reviewed methods to assess the two key ES by identifying their s...

  10. Identifying Ecosystem Services of Rivers and Streams Through Content Analysis

    Science.gov (United States)

    While much ecosystem services research focuses on analysis such as mapping and/or valuation, fewer research efforts are directed toward in-depth understanding of the specific ecological quantities people value. Ecosystem service monitoring and analysis efforts and communications ...

  11. 42 CFR 66.110 - Service, payback, and recovery requirements.

    Science.gov (United States)

    2010-10-01

    ..., INTERNSHIPS, TRAINING NATIONAL RESEARCH SERVICE AWARDS Direct Awards § 66.110 Service, payback, and recovery... month of research training, research, or teaching that is health-related (or any combination thereof...

  12. The energy efficiency directive; Die Energieeffizienzrichtlinie

    Energy Technology Data Exchange (ETDEWEB)

    Martin, Benedicte [Greifswald Univ. (Germany). Inst. fuer Klimaschutz, Energie und Mobilitaet - Recht, Oekonomie und Politik e.V. (IKEM)

    2012-12-13

    The present article gives an overview of the recently adopted European Energy Efficiency Directive. The Directive is to take effect in early December 2012 and will supersede the Energy Services Directive and the Cogeneration Directive. The Energy Efficiency Directive is dedicated to current European energy saving goals. To this end it contains regulations that are to lead to savings in primary energy as well as final energy use. One that deserves particular mention is Art. 7, which provides a framework for the introduction of energy saving engagement systems, on the strength of which transmission system operators and/or energy suppliers can be obligated to encourage final customers to implement energy saving measures.

  13. Rehabilitation and Prosthetic Services

    Science.gov (United States)

    ... Service » Prosthetic & Sensory Aids Service (PSAS) Rehabilitation and Prosthetic Services Menu Menu Rehabilitation and Prosthetics Rehabilitation and ... Enter ZIP code here Enter ZIP code here Prosthetic & Sensory Aids Service (PSAS) Our Mission The mission ...

  14. Safety at your service

    CERN Multimedia

    Antonella Del Rosso

    2014-01-01

    You might think that only twelve people to man twelve different services, each needing several people could be a problem. Not for the DGS-SEE-SV Section! We can now reveal their magic formula.   From risk management to prevention and follow-up of accidents, from safety training to hunting for pollutants in buildings and providing safety input for calls for tenders, the DGS-SEE-SV’s services underpin virtually every aspect of CERN’s daily life. “The section was set up in 2011 to meet the Organization's needs more effectively", explains François Angerand, head of the DGS-SEE-SV section. "For some activities, such as providing safety input for calls for tenders, our Section acts as an interface between the Departments and all the other services of the HSE Unit. In other cases, we ourselves provide direct support to the Departments.” “Safety” is synonymous with “prevention”: the DGS-...

  15. [Ecosystem services valuation of Qinghai Lake].

    Science.gov (United States)

    Jiang, Bo; Zhang, Lu; Ouyang, Zhi-yun

    2015-10-01

    Qinghai Lake is the largest inland and salt water lake in China, and provides important ecosystem services to beneficiaries. Economic valuation of wetland ecosystem services from Qinghai Lake can reveal the direct contribution of lake ecosystems to beneficiaries using economic data, which can advance the incorporation of wetland protection of Qinghai Lake into economic tradeoffs and decision analyses. In this paper, we established a final ecosystem services valuation system based on the underlying ecological mechanisms and regional socio-economic conditions. We then evaluated the eco-economic value provided by the wetlands at Qinghai Lake to beneficiaries in 2012 using the market value method, replacement cost method, zonal travel cost method, and contingent valuation method. According to the valuation result, the total economic values of the final ecosystem services provided by the wetlands at Qinghai Lake were estimated to be 6749.08 x 10(8) yuan RMB in 2012, among which the value of water storage service and climate regulation service were 4797.57 x 10(8) and 1929.34 x 10(8) yuan RMB, accounting for 71.1% and 28.6% of the total value, respectively. The economic value of the 8 final ecosystem services was ranked from greatest to lowest as: water storage service > climate regulation service > recreation and tourism service > non-use value > oxygen release service > raw material production service > carbon sequestration service > food production service. The evaluation result of this paper reflects the substantial value that the wetlands of Qinghai Lake provide to beneficiaries using monetary values, which has the potential to help increase wetland protection awareness among the public and decision-makers, and inform managers about ways to create ecological compensation incentives. The final ecosystem service evaluation system presented in this paper will offer guidance on separating intermediate services and final services, and establishing monitoring programs for

  16. Ecosystem services provided by waterbirds.

    Science.gov (United States)

    Green, Andy J; Elmberg, Johan

    2014-02-01

    Ecosystem services are ecosystem processes that directly or indirectly benefit human well-being. There has been much recent literature identifying different services and the communities and species that provide them. This is a vital first step towards management and maintenance of these services. In this review, we specifically address the waterbirds, which play key functional roles in many aquatic ecosystems, including as predators, herbivores and vectors of seeds, invertebrates and nutrients, although these roles have often been overlooked. Waterbirds can maintain the diversity of other organisms, control pests, be effective bioindicators of ecological conditions, and act as sentinels of potential disease outbreaks. They also provide important provisioning (meat, feathers, eggs, etc.) and cultural services to both indigenous and westernized societies. We identify key gaps in the understanding of ecosystem services provided by waterbirds and areas for future research required to clarify their functional role in ecosystems and the services they provide. We consider how the economic value of these services could be calculated, giving some examples. Such valuation will provide powerful arguments for waterbird conservation.

  17. Telemedicine in Russia as technology and service

    OpenAIRE

    Natenzon, Michael Ya.; Tarnopolsky, V. I.

    2003-01-01

    Since antiquity, providing medical services has been one of the traditional integral parts of economy. Nevertheless, the market of medical services has been always related to the intellectual sphere and therefore has been always receptive to new technologies. Today the market of medical services demonstrates high-growth potential and typical features of the new economy: sharing and direct use of professionals' knowledge and experience through the use of telecommunications technologies.

  18. Using citizen science to monitor pollination services

    OpenAIRE

    Birkin, Linda; Goulson, Dave

    2015-01-01

    1. Pollination by insects is a vital ecosystem service and the need for its assessment is increasing in recognition and political pressure, but there are currently no large-scale systematic monitoring schemes in place to measure the direct provision of this service.\\ud 2. This study tested a protocol for using a citizen science approach to quantify pollination service provision in gardens and allotments, requiring participants to grow Vica faba L. plants and carry out some simple manipulation...

  19. Infusing Preservice Teacher Preparation with Service Learning

    Science.gov (United States)

    Briody, Jennifer

    2005-01-01

    This research targeted the impact of service-learning experiences in one course of a teacher preparation program in an urban, private university. Participants chose either an indirect (food or toy drive) or direct (food pantry or homeless shelter) service-learning experience. Twenty-four undergraduate and graduate education majors participated in…

  20. Pushing CIRC with E-Service

    Science.gov (United States)

    Hoffert, Barbara

    2008-01-01

    According to "Library Journal's" latest annual book-buying survey of public libraries, e-service is at the heart of current efforts to maximize library use through more, and more direct communication with patrons. Nearly four out of five respondents report offering some sort of e-service to facilitate these conversations. This article presents…

  1. Valuing Ecosystem Services in Terms of Ecological Risks and Returns

    DEFF Research Database (Denmark)

    Abson, Dave; Termansen, Mette

    2011-01-01

    ecosystem services are not of direct value and that the losses of such services can be expressed in terms of the effects of their loss on the risk to the provision of the directly valued ecosystem services they support. We propose a heuristic framework that considers the relations between ecological risks...... and returns in the provision of ecosystem services. The proposed ecosystem-service valuation framework, which allows the expression of the value of all types of ecosystem services, calls for a shift from static, purely monetary valuation toward the consideration of trade-offs between the current flow...

  2. 42 CFR 440.180 - Home or community-based services.

    Science.gov (United States)

    2010-10-01

    ... treatment or other partial hospitalization services, psychosocial rehabilitation services and clinic...; (C) The services include activities which are not primarily directed at teaching specific job skills but at underlying habilitative goals (for example, attention span, motor skills); and (D) The...

  3. Opinion of Energie-Cites on: proposal for a directive of the European parliament and of the council; Avis d'Energie-Cites sur la: proposition de directive du parlement Europeen et du conseil relative a l'efficacite energetique dans les utilisations finales et aux services energetiques

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-12-01

    This proposal, focusing on the promotion of end-use efficiency, should be regarded as a necessary instrument to complement the recently adopted legislation on the opening of the internal energy market, which mainly leads to efficiency improvements on the supply side. Memorandum Considering that the functioning of the energy market does not allow ''market forces to allocate economic and natural resources effectively'' and that measures should be taken to improve this, the Commission draws up a list of the main obstacles and presents objectives. The technical potential for savings is at about 40%. The economic cost-effective savings potential is at about 20%, 22% in the buildings sector. The general target is 1 % savings per year. The 1,5 % target in the public sector is therefore more ambitious that the general target. According to the Commission, energy efficiency is a strategy to deal with scarce public funds while at the same time addressing serious energy and climate challenges, using the concept of leadership by example. It presents also the economic impact of energy savings targets and explains the reasons why the local authorities are affected by the proposed directive (Municipalities are energy consumers, the municipalities are energy distributors and/or retailers, the municipalities are planners/investors, the municipalities are motivators and local growth and employment are of concern to local authorities). (A.L.B.)

  4. Uncovering ecosystem service bundles through social preferences.

    Directory of Open Access Journals (Sweden)

    Berta Martín-López

    Full Text Available Ecosystem service assessments have increasingly been used to support environmental management policies, mainly based on biophysical and economic indicators. However, few studies have coped with the social-cultural dimension of ecosystem services, despite being considered a research priority. We examined how ecosystem service bundles and trade-offs emerge from diverging social preferences toward ecosystem services delivered by various types of ecosystems in Spain. We conducted 3,379 direct face-to-face questionnaires in eight different case study sites from 2007 to 2011. Overall, 90.5% of the sampled population recognized the ecosystem's capacity to deliver services. Formal studies, environmental behavior, and gender variables influenced the probability of people recognizing the ecosystem's capacity to provide services. The ecosystem services most frequently perceived by people were regulating services; of those, air purification held the greatest importance. However, statistical analysis showed that socio-cultural factors and the conservation management strategy of ecosystems (i.e., National Park, Natural Park, or a non-protected area have an effect on social preferences toward ecosystem services. Ecosystem service trade-offs and bundles were identified by analyzing social preferences through multivariate analysis (redundancy analysis and hierarchical cluster analysis. We found a clear trade-off among provisioning services (and recreational hunting versus regulating services and almost all cultural services. We identified three ecosystem service bundles associated with the conservation management strategy and the rural-urban gradient. We conclude that socio-cultural preferences toward ecosystem services can serve as a tool to identify relevant services for people, the factors underlying these social preferences, and emerging ecosystem service bundles and trade-offs.

  5. Uncovering Ecosystem Service Bundles through Social Preferences

    Science.gov (United States)

    Martín-López, Berta; Iniesta-Arandia, Irene; García-Llorente, Marina; Palomo, Ignacio; Casado-Arzuaga, Izaskun; Amo, David García Del; Gómez-Baggethun, Erik; Oteros-Rozas, Elisa; Palacios-Agundez, Igone; Willaarts, Bárbara; González, José A.; Santos-Martín, Fernando; Onaindia, Miren; López-Santiago, Cesar; Montes, Carlos

    2012-01-01

    Ecosystem service assessments have increasingly been used to support environmental management policies, mainly based on biophysical and economic indicators. However, few studies have coped with the social-cultural dimension of ecosystem services, despite being considered a research priority. We examined how ecosystem service bundles and trade-offs emerge from diverging social preferences toward ecosystem services delivered by various types of ecosystems in Spain. We conducted 3,379 direct face-to-face questionnaires in eight different case study sites from 2007 to 2011. Overall, 90.5% of the sampled population recognized the ecosystem’s capacity to deliver services. Formal studies, environmental behavior, and gender variables influenced the probability of people recognizing the ecosystem’s capacity to provide services. The ecosystem services most frequently perceived by people were regulating services; of those, air purification held the greatest importance. However, statistical analysis showed that socio-cultural factors and the conservation management strategy of ecosystems (i.e., National Park, Natural Park, or a non-protected area) have an effect on social preferences toward ecosystem services. Ecosystem service trade-offs and bundles were identified by analyzing social preferences through multivariate analysis (redundancy analysis and hierarchical cluster analysis). We found a clear trade-off among provisioning services (and recreational hunting) versus regulating services and almost all cultural services. We identified three ecosystem service bundles associated with the conservation management strategy and the rural-urban gradient. We conclude that socio-cultural preferences toward ecosystem services can serve as a tool to identify relevant services for people, the factors underlying these social preferences, and emerging ecosystem service bundles and trade-offs. PMID:22720006

  6. The service Ouroboros: Designing personas service cycles

    DEFF Research Database (Denmark)

    Gudiksen, Sune Klok; Brandt, Eva

    2014-01-01

    Many companies investigate new business opportunities in a turn from product to service design. As service offerings expand over time and space, such notions as ‘customer journey’ or ‘service blueprint’ have been suggested to grasp and design the nature of the emergent services. However, we find...... that there is room for improve ment on two levels. First, customer journeys and service blueprint tools could benefit from an empathic customer understanding; that is the design of customer - specific services. Secondly, the existing customer journey and service blueprint tools are less concerned with the cyclic...... nature of services,by which we mean the dynamics of a customer relationship and its development over time. We report findings from collaborative workshops, in which we challenged two companies to try a new concept and tool we call ‘The service Ouroboros’. We suggest it as a more appropriate way to design...

  7. A Schumpeterian perspective on service innovation

    DEFF Research Database (Denmark)

    Drejer, Ina

    Decades after services outdistanced manufacturing from an employment perspective, manufacturing has continued to dominate economic analyses, including innovation studies. As a reaction to this a new strand of service innovation studies has emerged within the last decade. These studies do not aim...... to compare innovation in services directly with innovation in manufacturing, rather they aim a studying distinctive features of service innovation. This has among other things resulted in the development of new, service-specific innovation concepts. However, as this paper seeks to demonstrate, these concepts...... service innovation studies in order for them to contribute to the development of a so-called ‘synthesis approach’ to innovation, which has a broad and conceptually solid – perspective on innovation, whether this is carried out in manufacturing, in services, or in a grey area embracing both....

  8. Implementation of telemedicine services in the earthquake disaster relief: the best medical experts provide direct medical service to the affected people%地震救援中实施远程医疗服务:把最好的医学专家送到灾区人民身边

    Institute of Scientific and Technical Information of China (English)

    黎檀实; 柴家科

    2013-01-01

    Objective and Method To sum up the experience and significance of the remote medical consultation system used by the PLA General Hospital in 4 ·20 Sichuan Lushan earthquake medical rescue in 2013.Results and conclusions After the Lushan earthquake in April 20,2013,the expert medical rescue team of the PLA General Hospital immediately took the wireless portable telemedicine system to the converge hospital which had received many wounds in earthquake and had been connected with other hospitals,medical rescue teams and rescue ambulances to open the remote medical consultation system for disaster services including intensive care,emergency treatment,orthopedics,cerebral surgery,hepatobiliary surgery,obstetrics,gynecology and other related professional remote assistance services.The experts put forward the diagnosis and treatment for victims and had a benign interaction between the experts in disaster site and rear experts,as a result improved the ability of treatment of the disaster expert medical team.The PLA General Hospital treated more than 110 patients by remote medical consultation system in the Lushan earthquake and achieved real-time HD consultation and on-site operation guide.The using of remote medical consultation system achieved the connection between multimedia communication system and medical information system of the hospital and the interconnection of video,audio,data and medical services among each united hospitals,which can provide the significant experience of using remote medical consultation system in our disaster medical rescue activities.%目的和方法 总结解放军总医院远程医疗会诊系统在2013年“4·20”四川芦山地震救援中发挥其远程医疗服务的经验,探讨远程医疗会诊系统在灾难救援中的作用.结果和结论 在2013年4月20日四川芦山地震后,解放军总医院专家医疗队及时将无线便携式远程医疗会诊系统发送至地震灾区伤员集合点医院,第一时间组织开通

  9. REINSURANCE SERVICE AND ITS ECONOMIC NATURE

    Directory of Open Access Journals (Sweden)

    К. Tretiak

    2017-04-01

    Full Text Available At the reinsurance market the object of purchase and sale is a specific product - a reinsurance service. According to several scientists' researches, the definition of a reinsurance service is clarified as a specific service in the form of selling legally formed liabilities concerning redistribution of already insured risk between insurance companies, which has its price, which is influenced by supply and demand. The author has proposed new approaches to the insurance service interpretation as a dominant, which causes the reinsurance market formation. It is shown that being traded in the reinsurance market, a reinsurance service is an important factor in the functioning and self-development of the market environment, it combines the interests of supply and demand holders and directly influences the market quality characteristics, causing trends of its further development. Supply and demand for a reinsurance service are influenced by both external and internal factors, the most important of them are: the capitalization level of insurers, the balance of their insurance portfolios, the condition of the state economy, the level of investment attractiveness, monetary and tax policy. The concepts of "reinsurance service demand" and "reinsurance service supply" have been clarified. Reinsurance service demand is a conscious and financially secured desire to buy reinsurance services. Reinsurance service supply is all services submitted in the reinsurance market.

  10. 78 FR 58516 - Information Collection; Direct Loan Servicing-Regular

    Science.gov (United States)

    2013-09-24

    ... provide loans to family farmers to purchase real estate and equipment, and finance agricultural production... borrowers and provide credit counseling, management advice and financial guidance. Additionally, FSA must document that credit is not available to the borrower from commercial credit sources in order to...

  11. Assessing the transferability of ecosystem service production estimates and functions

    Science.gov (United States)

    Estimates of ecosystem service (ES) production, and their responses to stressors or policy actions, may be obtained by direct measurement, other empirical studies, or modeling. Direct measurement is costly and often impractical, and thus many studies transfer ES production estim...

  12. Service co-innovation

    DEFF Research Database (Denmark)

    Henten, Anders; Sundbo, Jon; Sundbo, Donna

    of studies of the degree of satisfaction of the users with the services in the service encounters and studies that examine service innovation processes. The paper is based on research conducted in 21 service delivery situations in as many service companies. Drivers of and barriers to encounterbased service......This paper examines the factors affecting the innovativeness of service encounters. The assumption is that a considerable share of innovations in service industries is initiated in the service encounters. The theoretical foundation of this paper builds on a combination of research tradition...

  13. Service co-innovation

    DEFF Research Database (Denmark)

    Henten, Anders; Sundbo, Jon; Sundbo, Donna

    This paper examines the factors affecting the innovativeness of service encounters. The assumption is that a considerable share of innovations in service industries is initiated in the service encounters. The theoretical foundation of this paper builds on a combination of research tradition...... of studies of the degree of satisfaction of the users with the services in the service encounters and studies that examine service innovation processes. The paper is based on research conducted in 21 service delivery situations in as many service companies. Drivers of and barriers to encounterbased service...... innovation and a model are presented. The conclusion is that employees are the core factor in connecting customers with the innovating organization....

  14. Nursing Service Innovation: a case study examining emergency nurse practitioner service sustainability.

    Science.gov (United States)

    Fox, Amanda; Gardner, Glenn; Osborne, Sonya

    2017-09-14

    This research aimed to explore factors that influence sustainability of health service innovation, specifically emergency nurse practitioner service. Planning for cost effective provision of healthcare services is a concern globally. Reform initiatives are implemented often incorporating expanding scope of practice for health professionals and innovative service delivery models. Introducing new models is costly in both human and financial resources and therefore understanding factors influencing sustainability is imperative to viable service provision. This research used case study methodology (Yin, 2014). Data were collected during 2014 from emergency nurse practitioners, emergency department multidisciplinary team members and documents related to nurse practitioner services. Collection methods included telephone and semi-structured interviews, survey and document analysis. Pattern matching techniques were used to compare findings with study propositions. In this study, emergency nurse practitioner services did not meet factors that support health service sustainability. Multidisciplinary team members were confident that emergency nurse practitioner services were safe and helped to meet population health needs. Organizational support for integration of nurse practitioner services was marginal and led to poor understanding of service capability and underuse. This research provides evidence informing sustainability of nursing service models but more importantly raises questions about this little explored field. The findings highlight poor organizational support, excessive restrictions and underuse of the service. This is in direct contrast to contemporary expanding practice reform initiatives. Organizational support for integration is imperative to future service sustainability. This article is protected by copyright. All rights reserved. This article is protected by copyright. All rights reserved.

  15. Service Choreography, SBVR, and Time

    Directory of Open Access Journals (Sweden)

    Nurulhuda A. Manaf

    2015-12-01

    Full Text Available We propose the use of structured natural language (English in specifying service choreographies, focusing on the what rather than the how of the required coordination of participant services in realising a business application scenario. The declarative approach we propose uses the OMG standard Semantics of Business Vocabulary and Rules (SBVR as a modelling language. The service choreography approach has been proposed for describing the global orderings of the invocations on interfaces of participant services. We therefore extend SBVR with a notion of time which can capture the coordination of the participant services, in terms of the observable message exchanges between them. The extension is done using existing modelling constructs in SBVR, and hence respects the standard specification. The idea is that users - domain specialists rather than implementation specialists - can verify the requested service composition by directly reading the structured English used by SBVR. At the same time, the SBVR model can be represented in formal logic so it can be parsed and executed by a machine.

  16. Privatization and emergency medical services.

    Science.gov (United States)

    Reissman, S G

    1997-01-01

    Osborne and Gaebler's Reinventing Government has sparked discussion amongst elected officials, civil servants, the media, and the general public regarding advantages of privatizing government services. Its support stems from an effort to provide services to municipalities while reducing taxpayer expenditure. Many echo the sentiment of former New York Governor Mario Cuomo, who said, "It is not government's obligation to provide services, but to see that they're provided." Even in the area of public safety, privatization has found a "market." In many localities, privatizing Emergency Medical Services (EMS) is a popular and successful method for providing ambulance services. Privately owned ambulance services staff and respond to medical emergencies in a given community as part of the 9-1-1 emergency response system. Regulations for acceptable response times, equipment, and other essential components of EMS systems are specified by contract. This allows the municipality oversight of the service provided, but it does not provide the service directly. As will be discussed, this "contracting-out" model has many benefits. Privatizing EMS services is a decision based not only on cost-savings, but on accountability. A thorough evaluation must be utilized in the selection process. Issues of efficiency, effectiveness, quality, customer service, responsiveness, and equity must be considered by the government, in addition to cost of service. The uncertain future of health care in the United States has led those in EMS to look beyond the field's internal market to explore additional opportunities for expanding and redefining its roles beyond emergency care. It is important, however, to consider how emergency medical care, the original role of EMS, can be best delivered. Responding to emergencies is not just one of the functions involved in this field, it is the principal function from which public perception of EMS is formed, and from which support for entering other markets can

  17. Cable Television Service; Cable Television Relay Service.

    Science.gov (United States)

    Federal Register, 1972

    1972-01-01

    The rules and regulations of the Federal Communications Commission (FCC) concerning cable television service and cable relay service are presented along with the comments of the National Cable Television Association, the National Association of Broadcasters, the Association of Maximum Service Telecasters, and a major group of program suppliers.…

  18. 76 FR 4393 - Discover Financial Services Negotiated Service Agreement

    Science.gov (United States)

    2011-01-25

    ... Discover Financial Services Negotiated Service Agreement AGENCY: Postal Regulatory Commission. ACTION... Financial Services negotiated service agreement to the market dominant product list. This notice addresses... 3020, et seq., to add a Discover Financial Services (DFS) negotiated service agreement to the...

  19. Marketing Youth Services.

    Science.gov (United States)

    Dimick, Barbara

    1995-01-01

    Marketing techniques in youth services are useful for designing programs, collections, and services and for determining customer needs. The marketing mix--product, place, price, and practice--provides a framework for service analysis. (AEF)

  20. Marketing Youth Services.

    Science.gov (United States)

    Dimick, Barbara

    1995-01-01

    Marketing techniques in youth services are useful for designing programs, collections, and services and for determining customer needs. The marketing mix--product, place, price, and practice--provides a framework for service analysis. (AEF)

  1. ServiceNow

    Data.gov (United States)

    US Agency for International Development — A cloud based service for creating a single system of record for all types of business services used by OCIO. Service Now applications are built on a single platform...

  2. Determinants of customer satisfaction with service encounter

    Directory of Open Access Journals (Sweden)

    Ariana Nefat

    2008-12-01

    Full Text Available Service encounters are the focal point of a customer’s perception of a service in terms of its quality, value and customer satisfaction. The paper researches the influence of the components of a service encounter on customer satisfaction. Among several factors that determine customer satisfaction the quality of service, which is related to the characteristics of service, plays an important role. However, a direct insight into the reasons that make a service encounter satisfactory or unsatisfactory is provided by the critical incident technique, where causes of dis/satisfaction differ primarily depending on whether they derive from interpersonal contact or from contact with technology. The evidence of service, which includes people, process and the physical evidence, plays a critical role in a customer’s dis/satisfaction. The influence of these elements cannot be observed separately; it must be observed in their interaction during the delivery of service and their strongest effect is achieved during face-to-face service encounters that have the characteristics of a theatre metaphor. Even though a high level of satisfaction may be achieved after the recovery of a service, enterprises should aim to conduct excellent service encounters right from the start.

  3. Knowledge Service Engineering Handbook

    CERN Document Server

    Kantola, Jussi

    2012-01-01

    Covering the emerging field of knowledge service engineering, this groundbreaking handbook outlines how to acquire and utilize knowledge in the 21st century. Drawn on the expertise of the founding faculty member of the world's first university knowledge engineering service department, this book describes what knowledge services engineering means and how it is different from service engineering and service production. Presenting multiple cultural aspects including US, Finnish, and Korean, this handbook provides engineering, systemic, industry, and consumer use viewpoints to knowledge service sy

  4. Invertebrates, ecosystem services and climate change.

    Science.gov (United States)

    Prather, Chelse M; Pelini, Shannon L; Laws, Angela; Rivest, Emily; Woltz, Megan; Bloch, Christopher P; Del Toro, Israel; Ho, Chuan-Kai; Kominoski, John; Newbold, T A Scott; Parsons, Sheena; Joern, A

    2013-05-01

    The sustainability of ecosystem services depends on a firm understanding of both how organisms provide these services to humans and how these organisms will be altered with a changing climate. Unquestionably a dominant feature of most ecosystems, invertebrates affect many ecosystem services and are also highly responsive to climate change. However, there is still a basic lack of understanding of the direct and indirect paths by which invertebrates influence ecosystem services, as well as how climate change will affect those ecosystem services by altering invertebrate populations. This indicates a lack of communication and collaboration among scientists researching ecosystem services and climate change effects on invertebrates, and land managers and researchers from other disciplines, which becomes obvious when systematically reviewing the literature relevant to invertebrates, ecosystem services, and climate change. To address this issue, we review how invertebrates respond to climate change. We then review how invertebrates both positively and negatively influence ecosystem services. Lastly, we provide some critical future directions for research needs, and suggest ways in which managers, scientists and other researchers may collaborate to tackle the complex issue of sustaining invertebrate-mediated services under a changing climate. © 2012 The Authors. Biological Reviews © 2012 Cambridge Philosophical Society.

  5. DSI: Distributed Service Integration for Service Grid

    Institute of Scientific and Technical Information of China (English)

    YANG GuangWen(杨广文); SHI ShuMing(史树明); WANG DingXing(王鼎兴); HUANG QiFeng(黄启锋); LIU XueZheng(刘学铮)

    2003-01-01

    This paper presents DSI, a distributed service discovery and integration utility for service grid. The goal of DSI is efficiently to improve service publishing, deletion and lookup,decentralized control, scalability, and availability. DSI comprises a logically global metadata pool and a double-layered DHT (Distributed Hash Table). Efficient service publishing and lookup are achieved by adopting DHT. Clean service deletion is guaranteed by time-stamping. And system availability is improved by replication combined with automatic indexer selection. Experiments show that DSI can achieve short response time, low processing cost and high availability.

  6. Central Laboratories Services

    Data.gov (United States)

    Federal Laboratory Consortium — The TVA Central Laboratories Services is a comprehensive technical support center, offering you a complete range of scientific, engineering, and technical services....

  7. Quality Management of Services

    Directory of Open Access Journals (Sweden)

    Yuriy I. Dreizis

    2016-10-01

    Full Text Available It is shown that services take the leading place in modern, post-industrial society. The world economy has passed the period of deindustrialization and became service economy. Fundamentals of service economy are not physical goods, but service. The special nature of service and its property demands the mechanism of management, other than physical goods. Ensuring necessary quality of the provided service is one of the main problems, which is put before the organization by peculiar properties of service. Therefore, quality management of service is the most important branch of management of the modern organization.

  8. 76 FR 66132 - Proposed Collection; Comment Request for Travel Service Provider and Carrier Service Provider...

    Science.gov (United States)

    2011-10-25

    ... persons traveling on direct flights to Cuba and forward that information to carrier service providers, for... collection techniques or other forms of information technology; and (e) estimates of capital or start-up...

  9. Economic viewpoints on ecosystem services

    NARCIS (Netherlands)

    Silvis, H.J.; Heide, van der C.M.

    2013-01-01

    to help determine the different values of ecosystems. Ecosystem services are usually divided into four categories: provisioning services, regulating services, cultural services and habitat services (previously denoted as supporting services). This overview highlights economic theories about

  10. Economic viewpoints on ecosystem services

    NARCIS (Netherlands)

    Silvis, H.J.; Heide, van der C.M.

    2013-01-01

    to help determine the different values of ecosystems. Ecosystem services are usually divided into four categories: provisioning services, regulating services, cultural services and habitat services (previously denoted as supporting services). This overview highlights economic theories about ecosyste

  11. Submission of Telecommunications Service Requests

    Science.gov (United States)

    1990-01-01

    Without Internodal Allocation: The quantity of erlangs of CONUS destined, routine traffic (carried load) offered by the DCTN end-office to the DCTN...34nonmirror image circuit" refers to a two-way circuit when at least one pathway facility traversed by the circuit in one direction is different from...associated with requested DSN service. 239B. With Internodal Allocation Erlang Subscription (DCTN Only). Specify the quantity of Erlangs of CONUS destined

  12. Distributive justice in the international regulation of global ecosystem services

    NARCIS (Netherlands)

    Davidson, M.D.

    2012-01-01

    Incentive measures can internalize the external benefits of ecosystem services or, conversely, the external costs of service losses. In the last decade, preliminary steps have been taken in this direction in the form of voluntary payments for ecosystem services. Much larger financial flows may be re

  13. Distributive justice in the international regulation of global ecosystem services

    NARCIS (Netherlands)

    Davidson, M.D.

    2012-01-01

    Incentive measures can internalize the external benefits of ecosystem services or, conversely, the external costs of service losses. In the last decade, preliminary steps have been taken in this direction in the form of voluntary payments for ecosystem services. Much larger financial flows may be

  14. Grid workflow job execution service 'Pilot'

    Science.gov (United States)

    Shamardin, Lev; Kryukov, Alexander; Demichev, Andrey; Ilyin, Vyacheslav

    2011-12-01

    'Pilot' is a grid job execution service for workflow jobs. The main goal for the service is to automate computations with multiple stages since they can be expressed as simple workflows. Each job is a directed acyclic graph of tasks and each task is an execution of something on a grid resource (or 'computing element'). Tasks may be submitted to any WS-GRAM (Globus Toolkit 4) service. The target resources for the tasks execution are selected by the Pilot service from the set of available resources which match the specific requirements from the task and/or job definition. Some simple conditional execution logic is also provided. The 'Pilot' service is built on the REST concepts and provides a simple API through authenticated HTTPS. This service is deployed and used in production in a Russian national grid project GridNNN.

  15. Contribution of Services to Economic Development

    Directory of Open Access Journals (Sweden)

    Laurentiu Tachiciu

    2012-11-01

    Full Text Available Service activities have become the main engine for sustainable development. The share of services in the global economic output is about 70% and their contribution to global employment is about 40%. There are substantial differences between countries and regions of the world in the development of services sector, the share of tertiary activities in both output and employment being higher in strong industrialized economies, but growing rapidly in developing and transition economies as well. As services tend to become essential inputs for every activity, service productivity is a key factor of economic performance not only directly, but also by its multiplier effects spread all over the economy, including manufacturing and agriculture. From a qualitative point of view, services are at the core of transformative processes toward more inclusive societies, reconciliation between economic growth and environment preservation, enhancing knowledge production and improving the exploitation of technological advances, and better governance.

  16. 36 CFR 13.325 - Most directly affected Native Corporation.

    Science.gov (United States)

    2010-07-01

    ... 36 Parks, Forests, and Public Property 1 2010-07-01 2010-07-01 false Most directly affected Native... THE INTERIOR NATIONAL PARK SYSTEM UNITS IN ALASKA Special Visitor Services § 13.325 Most directly... application to the superintendent to be determined the Native Corporation most directly affected by...

  17. The Impact of Service Learning on the Training of Pre-Service Teachers: Analysis from a Physical Education Subject

    Science.gov (United States)

    Gil-Gómez, Jesús; Chiva-Bartoll, Óscar; Martí-Puig, Manuel

    2015-01-01

    This paper discusses the effects of the use of service learning in pre-service teachers (PSTs). This methodology has been applied for two academic years at a Spanish university, providing a direct service for children with special educational needs (SEN) through motor and expressive games. We used Butin's model for the analysis of data collected…

  18. PhEDEx Data Service

    CERN Document Server

    Egeland, Ricky; Huang, Chih-Hao

    2009-01-01

    The PhEDEx Data Service provides access to information from the central PhEDEx database, as well as certificate-authenticated managerial operations such as requesting the transfer or deletion of data. The Data Service is integrated with the SiteDB service for fine-grained access control, providing a safe and secure environment for operations. A plug-in architecture allows server-side modules to be developed rapidly and easily by anyone familiar with the schema, and can automatically return the data in a variety of formats for use by different client technologies. Using HTTP access via the Data Service instead of direct database connections makes it possible to build monitoring web-pages with complex drill-down operations, suitable for debugging or presentation from many aspects. This will form the basis of the new PhEDEx website in the near future, as well as providing access to PhEDEx information and certificate-authenticated services for other CMS dataflow and workflow management tools such as CRAB, WMCore,...

  19. AIRTV: Broadband Direct to Aircraft

    Science.gov (United States)

    Sorbello, R.; Stone, R.; Bennett, S. B.; Bertenyi, E.

    2002-01-01

    Airlines have been continuously upgrading their wide-body, long-haul aircraft with IFE (in-flight entertainment) systems that can support from 12 to 24 channels of video entertainment as well as provide the infrastructure to enable in-seat delivery of email and internet services. This is a direct consequence of increased passenger demands for improved in-flight services along with the expectations that broadband delivery systems capable of providing live entertainment (news, sports, financial information, etc.) and high speed data delivery will soon be available. The recent events of Sept. 11 have slowed the airline's upgrade of their IFE systems, but have also highlighted the compelling need for broadband aeronautical delivery systems to include operational and safety information. Despite the impact of these events, it is estimated that by 2005 more than 3000 long haul aircraft (servicing approximately 1 billion passengers annually) will be fully equipped with modern IFE systems. Current aircraft data delivery systems, which use either Inmarsat or NATS, are lacking in bandwidth and consequently are unsuitable to satisfy passenger demands for broadband email/internet services or the airlines' burgeoning data requirements. Present live video delivery services are limited to regional coverage and are not readily expandable to global or multiregional service. Faced with a compelling market demand for high data transport to aircraft, AirTV has been developing a broadband delivery system that will meet both passengers' and airlines' needs. AirTV is a global content delivery system designed to provide a range of video programming and data services to commercial airlines. When AirTV is operational in 2004, it will provide a broadband connection directly to the aircraft, delivering live video entertainment, internet/email service and essential operational and safety data. The system has been designed to provide seamless global service to all airline routes except for those

  20. 78 FR 75515 - Veterinary Feed Directive

    Science.gov (United States)

    2013-12-12

    ... HUMAN SERVICES Food and Drug Administration 21 CFR Parts 514 and 558 RIN 0910-AG95 Veterinary Feed... Administration (FDA) is proposing to amend its animal drug regulations regarding veterinary feed directive (VFD..., Center for Veterinary Medicine (HFV-220), Food and Drug Administration, 7519 Standish Pl., Rockville,...

  1. 77 FR 41886 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-07-17

    .... SUMMARY: We are adopting a new airworthiness directive (AD) for all Airbus Model A318, A319, and A320... from the reservoir to the off-wing slide in automatic or manual mode. As a result, the aspirator will... 15636, March 16, 2012) to refer to Airbus Mandatory Service Bulletin A320-53-1227, Revision 05,...

  2. 78 FR 60667 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-10-02

    .../A319/A320/A321 Airplane Flight Manual. (ii) Reserved. (5) For service information identified in this AD.... SUMMARY: We are superseding airworthiness directive (AD) 2012-26-51 for all Airbus Model A318, A319, A320, and A321 series airplanes. AD 2012- 26-51 required revising the airplane flight manual (AFM) to...

  3. Estimating Health Services Requirements

    Science.gov (United States)

    Alexander, H. M.

    1985-01-01

    In computer program NOROCA populations statistics from National Center for Health Statistics used with computational procedure to estimate health service utilization rates, physician demands (by specialty) and hospital bed demands (by type of service). Computational procedure applicable to health service area of any size and even used to estimate statewide demands for health services.

  4. SERVICE-AWARE BASED FUZZY ADMISSION CONTROL SCHEME IN MULTI-SERVICE NETWORKS

    Institute of Scientific and Technical Information of China (English)

    Qiu Gongan; Zhang Shunyi; Liu Shidong

    2007-01-01

    Multi-service aggregated transmission is the direction of IP network. Providing different Quality of Service (QoS) assurance for different services has become a crucial problem in future network.Admission control is a vital function for multi-service IP network. This paper proposes a novel fuzzy admission control scheme based on coarse granularity service-aware technique. Different service has discriminative sensitivity to the same QoS characteristic parameter in general. The traffic class can be perceived by the service request parameter and the proposed QoS function. And requirements of different applications can be met by maintaining the life parameter. From simulation results, the proposed scheme shows a better QoS provisioning than those traditional fuzzy logic based methods under the same admission probability.

  5. Study on e-government services quality: The integration of online and offline services

    Directory of Open Access Journals (Sweden)

    Jing Fan

    2015-05-01

    Full Text Available Purpose: E-Government, as a new bond linking the government and the public, has gradually become the focus of innovation in government services. The paper focuses on the e-Government service quality issues from the perspective of users. Design/methodology/approach: From the aspects of online service quality perception and offline service quality perception, based on IS Success model and SERQUAL model, e-Government Services Quality model has been set up with information quality, system quality and service quality as key factors. Then, the survey method was applied to collect data and then to test the model. Findings: It was found that users’ perception of offline service quality has a significant effect on improving their perception of online service quality, and online service quality perception has a significant effect on public satisfaction of e-Government services; information clarity, system security and stability, interactive services and “one-stop” services all have a significant effect on public satisfaction of e-Government services. However, offline service quality perception has certain positive effect on public satisfaction of e-Government services but not dramatically. Research limitations/implications: Mobile e-Government as an important direction of the development of e-Government, in the future, we will study more about mobile e-Government services channels. Originality/value: This study further develops the theory of information system service quality, and also provides a theoretical reference for government departments. On the one hand, based on the characteristics of e-government system, information quality, system quality and service quality in the previous system service model are further discussed; on the other hand, both online and offline services are taken into consideration in the information system service model, thus establishing the e-government services quality model and making an in-depth study of the

  6. Services in innovation - Innovation in services

    OpenAIRE

    Hauknes, Johan

    1998-01-01

    There has been a considerable gap between efforts to understand innovation and other change processes, and ongoing structural changes in national economies. The SI4S project has aimed at developing concepts, empirical evidence and proposals for practical action concerning the role of services in European innovation systems. The general objectives were to map, understand and analyse the changing role of services and service innovations as users, carriers, shapers and sources of innovations in ...

  7. Contracting out local services

    DEFF Research Database (Denmark)

    Petersen, Ole Helby; Houlberg, Kurt; Ring Christensen, Lasse

    2015-01-01

    Governments face a fundamental choice between in-house production and contracting out for the delivery of services to citizens. This article examines the importance of ideology, fiscal pressure, and size for contracting out in technical and social services. The analysis builds on a panel data set...... covering municipal spending on services in all 98 Danish municipalities. The authors find that contracting out is shaped by ideology in social services but not in technical services, which indicates that social services are the contemporary ideological battlefield of privatization. The analysis further...... reveals that economically prosperous municipalities are more likely to contract out social services, whereas contracting out of technical services is not influenced by economic affluence. Finally, larger municipalities contract out more in technical services but less in social services, demonstrating...

  8. Exploring Modularity in Services

    DEFF Research Database (Denmark)

    Avlonitis, Viktor; Hsuan, Juliana

    2017-01-01

    Purpose The purpose of this paper is to examine how modularity manifests in the design of services. The study brings new insights on the organization of service firms by empirically exploring and theoretically advancing the intersection of modularity and service design. Design/methodology/approac......Purpose The purpose of this paper is to examine how modularity manifests in the design of services. The study brings new insights on the organization of service firms by empirically exploring and theoretically advancing the intersection of modularity and service design. Design...... concept), intra-firm organization (service delivery system), and inter-firm relationships (service network). They posit that service architectures require the examination of different analytical levels due to the complex and dynamic nature of service business. Additionally, the analysis provides new...

  9. 7 CFR 1940.588 - Business and Industry Guaranteed and Direct Loans.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 13 2010-01-01 2009-01-01 true Business and Industry Guaranteed and Direct Loans... HOUSING SERVICE, RURAL BUSINESS-COOPERATIVE SERVICE, RURAL UTILITIES SERVICE, AND FARM SERVICE AGENCY, DEPARTMENT OF AGRICULTURE (CONTINUED) PROGRAM REGULATIONS (CONTINUED) GENERAL Methodology and Formulas for...

  10. Service Systems Implementation

    CERN Document Server

    Demirkan, Haluk; Krishna, Vikas

    2011-01-01

    Service Systems Implementation provides the latest applications and practices aimed at improving the key performance indicators of service systems, especially those related to service quality, service productivity, regulatory compliance, and sustainable service innovation. The book presents action-oriented, application-oriented, design science-oriented (artifacts building: constructs, models, methods and instantiations) and case study-oriented research with actionable results by illustrating techniques that can be employed in large scale, real world examples. The case studies will help visuali

  11. DEEPENING SERVICES MARKET INTEGRATION - A CRITICAL ASSESSMENT

    Directory of Open Access Journals (Sweden)

    Jacques Pelkmans

    2007-12-01

    Full Text Available The greatest asset of the European Union is undoubtedly its internal market. However, the internal market is not completed: it suffers from a giant hole with respect to many services. The present contribution addresses the status of services in the internal market and, in particular, the horizontal liberalisation (or, the lack of it of services outside the two large sectors which greatly deepened market integration (6 modes of transport and 3 financial services markets. Because a horizontal perspective on services in the EU is still little understood, it is briefly summarized what services really are and how their regulatory logic in the internal market can help to classify them. The (strong economic case for deepening services market integration is built on recent empirical economic analysis as well as simulation. This is followed by a discussion, with flowchart, of the Bolkestein draft directive, against the backdrop of the frustrating lack of, or at best, selective progress on services for decades. A survey of economic impact studies of the draft directive is provided, too, underpinning its importance even when the infamous origin principle is taken out. Some light is subsequently shed on the tumultuous politicisation of the services debate. Emphasis is laid on the socio-economic context (which, it is submitted, sharpened the discussion at times into polarisation and a series of other factors such as the diversity of the national regulatory frameworks of services and the labour employed, the complexity of the draft directive, the potentially radical nature of the origin principle (especially for those not aware of the case law of the ECJ, the dominant role of the EP and the opportunism of leading national politicians. Finally, directive 2006/123 –meanwhile in force – is explained and briefly assessed. Apart from the conspicuous manifestation of 'Angst' in drafting the directive, the (de merits are set out. The conclusion is that a badly

  12. A QFD and SERVQUAL Approach to Hotel Service Design

    OpenAIRE

    2008-01-01

    Current challenges facing the hotel service providers, such as “high customer demands on quality”, “increasing competition for high customer satisfaction” and “the demand for full services”, are directly related to better understand the attributes of hotel services and improve the service design characteristics accordingly. In service quality literature, SERVQUAL is the most widely used structure to measure customer expectations and perceptions. Quality Function Deployment (QFD) method is als...

  13. A QFD and SERVQUAL Approach to Hotel Service Design

    OpenAIRE

    Ikiz, Aysun Kapucugil; Masoudi, Ali

    2014-01-01

    Current challenges facing the hotel service providers, such as “high customer demands on quality”, “increasing competition for high customer satisfaction” and “the demand for full services”, are directly related to better understand the attributes of hotel services and improve the service design characteristics accordingly. In service quality literature, SERVQUAL is the most widely used structure to measure customer expectations and perceptions. Quality Function Deployment (QFD) method is als...

  14. FDI in Post-Production Services and Product Market Competition

    OpenAIRE

    2010-01-01

    Post-production services, such as sales, distribution, and maintenance, comprise a crucial element of business activity. A foreign firm faces a higher cost to perform such services than its domestic rival because of the lack of proximity to customers. We explore an international duopoly model in which a foreign firm can reduce its cost for post-production services by foreign direct investment (FDI), or alternatively can outsource such services to its domestic rival. Trade liberalization, if n...

  15. Quasi-steady State Reduction of Molecular Motor-Based Models of Directed Intermittent Search

    KAUST Repository

    Newby, Jay M.

    2010-02-19

    We present a quasi-steady state reduction of a linear reaction-hyperbolic master equation describing the directed intermittent search for a hidden target by a motor-driven particle moving on a one-dimensional filament track. The particle is injected at one end of the track and randomly switches between stationary search phases and mobile nonsearch phases that are biased in the anterograde direction. There is a finite possibility that the particle fails to find the target due to an absorbing boundary at the other end of the track. Such a scenario is exemplified by the motor-driven transport of vesicular cargo to synaptic targets located on the axon or dendrites of a neuron. The reduced model is described by a scalar Fokker-Planck (FP) equation, which has an additional inhomogeneous decay term that takes into account absorption by the target. The FP equation is used to compute the probability of finding the hidden target (hitting probability) and the corresponding conditional mean first passage time (MFPT) in terms of the effective drift velocity V, diffusivity D, and target absorption rate λ of the random search. The quasi-steady state reduction determines V, D, and λ in terms of the various biophysical parameters of the underlying motor transport model. We first apply our analysis to a simple 3-state model and show that our quasi-steady state reduction yields results that are in excellent agreement with Monte Carlo simulations of the full system under physiologically reasonable conditions. We then consider a more complex multiple motor model of bidirectional transport, in which opposing motors compete in a "tug-of-war", and use this to explore how ATP concentration might regulate the delivery of cargo to synaptic targets. © 2010 Society for Mathematical Biology.

  16. How service users become empowered in human service organizations: the empowerment model.

    Science.gov (United States)

    Holosko, M J; Leslie, D R; Cassano, D R

    2001-01-01

    This article presents an empowerment model (EM) to be used by service users in human service organizations (HSOs). The EM is a structure for service user input to be integrated within the HSO at various administrative levels through a four-step sequential process. The article fills a distinct void in the literature as there are numerous accounts about the importance of empowerment, but few on processes that need to be defined to operationalize the concept. Implications are directed toward administrators as they need to take leadership in implementing the EM in order to deliver more efficient and relevant services to their clients.

  17. 47 CFR 73.61 - AM directional antenna field strength measurements.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false AM directional antenna field strength... RADIO SERVICES RADIO BROADCAST SERVICES AM Broadcast Stations § 73.61 AM directional antenna field strength measurements. (a) Each AM station using a directional antenna with monitoring point locations...

  18. 42 CFR 86.30 - Nature and purpose of direct traineeships.

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false Nature and purpose of direct traineeships. 86.30 Section 86.30 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES OCCUPATIONAL... AND HEALTH Occupational Safety and Health Direct Traineeships § 86.30 Nature and purpose of direct...

  19. 76 FR 47353 - Final Directives for Forest Service Wind Energy Special Use Authorizations, Forest Service Manual...

    Science.gov (United States)

    2011-08-04

    ... area permits, given their long-term capital investments, the potential for interference with their... psychological benefit these areas confer on those who cherish the national forests. Another respondent... psychological, physical, and spiritual impacts on the next seven generations, as well as its impacts on...

  20. Invariants of directed spaces

    DEFF Research Database (Denmark)

    Raussen, Martin

    2007-01-01

    Directed spaces are the objects of study within directed algebraic topology. They are characterised by spaces of directed paths associated to a source and a target, both elements of an underlying topological space. The algebraic topology of these path spaces and their connections are studied from...

  1. - NEW - CERN Housing Service – WWW BOOKING

    CERN Multimedia

    GS Department

    2010-01-01

    You can now easily reserve your room at the CERN Hotel and plan your stay at CERN directly online with help of the online CERN Hotel reservation NOW available at the following address: https://edh.cern.ch/Hostel/ Please contact the CERN Housing Service team if you have any queries (reception in Building 39, 74481). GS-SEM Group Infrastructure and General Services Department

  2. Observations of directional thermal soaring preference in vultures

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Observations are made by the author of this report on the horizontal direction of rotation by two groups of vultures after they have achieved a circling glide path...

  3. A CALCULUS FOR SERVICES INNOVATION

    Institute of Scientific and Technical Information of China (English)

    James M.TIEN; Daniel BERG

    2007-01-01

    Innovation in the services area - especially in the electronic services (e-services) domain - can be systematically developed by first considering the strategic drivers and foci, then the tactical principles and enablers, and finally the operational decision attributes, all of which constitute a process or calculus of services innovation. More specifically, there are four customer drivers (i.e., collaboration,customization, integration and adaptation), three business foci (i.e., creation-focused, solution-focused and competition-focused), six business principles (i.e., reconstruct market boundaries, focus on the big picture not numbers, reach beyond existing demand, get strategic sequence right, overcome organizational hurdles and build execution into strategy), eight technical enablers (i.e., software algorithms, automation, telecommunication, collaboration, standardization, customization,organization, and globalization), and six attributes of decision informatics (i.e., decision-driven,information-based, real-time, continuously-adaptive, customer-centric and computationally-intensive).It should be noted that the four customer drivers are all directed at empowering the individual - that is,at recognizing that the individual can, respectively, contribute in a collaborative situation, receive customized or personalized attention, access an integrated system or process, and obtain adaptive real-time or just-in-time input. The developed process or calculus serves to identify the potential white spaces or blue oceans for innovation. In addition to expanding on current innovations in services and related experiences, white spaces are identified for possible future innovations; they include those that can mitigate the unforeseen consequences or abuses of earlier innovations, safeguard our rights to privacy, protect us from the always-on, interconnected world, provide us with an authoritative search engine, and generate a GDP metric that can adequately measure the growing

  4. Web services foundations

    CERN Document Server

    Bouguettaya, Athman; Daniel, Florian

    2013-01-01

    Web services and Service-Oriented Computing (SOC) have become thriving areas of academic research, joint university/industry research projects, and novel IT products on the market. SOC is the computing paradigm that uses Web services as building blocks for the engineering of composite, distributed applications out of the reusable application logic encapsulated by Web services. Web services could be considered the best-known and most standardized technology in use today for distributed computing over the Internet.Web Services Foundations is the first installment of a two-book collection coverin

  5. New Service Status Board

    CERN Multimedia

    2013-01-01

    On Monday 14 October, the Service Status Board for GS and IT will change. The new Status Board will be integrated with the CERN Service Portal and with the CERN Service Catalogue.   As of today, the SSB will display “Service Incidents”, “Planned Interventions” and “Service Changes”. References valid from 14 October: CERN SSB at https://cern.ch/ssb Computing SSB (previously IT SSB) at https://cern.ch/itssb   Nicole Cremel, IT and GS Service Management Support

  6. IT Service Management Architectures

    DEFF Research Database (Denmark)

    Tambo, Torben; Filtenborg, Jacob

    2017-01-01

    IT service providers tend to view their services as quasi-embedded in the client organisations infrastructure. Therefore, IT service providers lack a full picture of being an organisation with its own enterprise archicture. By systematically developing an enterprise architecture using the unifica......IT service providers tend to view their services as quasi-embedded in the client organisations infrastructure. Therefore, IT service providers lack a full picture of being an organisation with its own enterprise archicture. By systematically developing an enterprise architecture using...

  7. 77 FR 731 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-01-06

    ...-256-AD; Amendment 39-16904; AD 2011-27-03] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... publications listed in the AD as of February 10, 2012. ADDRESSES: For Boeing service information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707,...

  8. A Schumpeterian perspective on service innovation

    DEFF Research Database (Denmark)

    Drejer, Ina

    Decades after services outdistanced manufacturing from an employment perspective, manufacturing has continued to dominate economic analyses, including innovation studies. As a reaction to this a new strand of service innovation studies has emerged within the last decade. These studies do not aim...... to compare innovation in services directly with innovation in manufacturing, rather they aim a studying distinctive features of service innovation. This has among other things resulted in the development of new, service-specific innovation concepts. However, as this paper seeks to demonstrate, these concepts......, markets nor organisational structures, in the definition of innovation, moves these studies away from the Schumpeterian heritage of innovation studies. This further implies that the meaning of innovation as an economic concept becomes unclear. There is thus a need for a conceptual strengthening of the new...

  9. Operationalizing Network Theory for Ecosystem Service Assessments.

    Science.gov (United States)

    Dee, Laura E; Allesina, Stefano; Bonn, Aletta; Eklöf, Anna; Gaines, Steven D; Hines, Jes; Jacob, Ute; McDonald-Madden, Eve; Possingham, Hugh; Schröter, Matthias; Thompson, Ross M

    2017-02-01

    Managing ecosystems to provide ecosystem services in the face of global change is a pressing challenge for policy and science. Predicting how alternative management actions and changing future conditions will alter services is complicated by interactions among components in ecological and socioeconomic systems. Failure to understand those interactions can lead to detrimental outcomes from management decisions. Network theory that integrates ecological and socioeconomic systems may provide a path to meeting this challenge. While network theory offers promising approaches to examine ecosystem services, few studies have identified how to operationalize networks for managing and assessing diverse ecosystem services. We propose a framework for how to use networks to assess how drivers and management actions will directly and indirectly alter ecosystem services.

  10. Transactions Concurrency Control in Web Service Environment

    DEFF Research Database (Denmark)

    Alrifai, Mohammad; Dolog, Peter; Nejdl, Wolfgang

    2006-01-01

    on transaction dependency graphs maintained at the service provider side. We have implemented such a protocol on top of WS-Transaction. The extension on the web service provider side is simple to achieve as it can be an integral part of the service invocation mechanism. It has also an advantage from...... an engineering point of view as it does not change the way consumers or clients of web services have to be programmed. Furthermore, it avoids direct communication between transaction coordinators which preserves security by keeping the information about business transactions restricted to the coordinators which......Business transactions in web service environments run with relaxed isolation and atomicity property. In such environments, transactions can commit and roll back independently on each other. Transaction management has to reflect this issue and address the problems which result for example from...

  11. Service-oriented high level architecture

    CERN Document Server

    Wang, Wenguang; Li, Qun; Wang, Weiping; Liu, Xichun

    2009-01-01

    Service-oriented High Level Architecture (SOHLA) refers to the high level architecture (HLA) enabled by Service-Oriented Architecture (SOA) and Web Services etc. techniques which supports distributed interoperating services. The detailed comparisons between HLA and SOA are made to illustrate the importance of their combination. Then several key enhancements and changes of HLA Evolved Web Service API are introduced in comparison with native APIs, such as Federation Development and Execution Process, communication mechanisms, data encoding, session handling, testing environment and performance analysis. Some approaches are summarized including Web-Enabling HLA at the communication layer, HLA interface specification layer, federate interface layer and application layer. Finally the problems of current research are discussed, and the future directions are pointed out.

  12. The community service in Romania. The first community service workshop

    Directory of Open Access Journals (Sweden)

    Şimon, M.

    2010-11-01

    Full Text Available This article aims at a topical and of great interest issue for the specialists working in the Reinstatement Service and also for those who are dealing with criminally sanctioned citizens. The current system of non-custodial sanctions existing in Romania is still in its beginning, providing few alternatives for obeying this type of punishments in a non-custodial framework but which is yet well organized and supervised. The intimation of this aspect and the desire to promote the non-custodial sanctions among the persons who have violated the criminal law, in 2009, led to the establishment of the first workshop of unpaid work in Romania. The interviews, with the specialists directly involved in this project, show that a sustained effort from the public and private community institutions, the community service workshops can be efficient and viable methods of social reintegration for the criminally sanctioned citizens.

  13. Medical Virtual Public Services

    Directory of Open Access Journals (Sweden)

    Iulia SURUGIU

    2008-01-01

    Full Text Available The healthcare enterprises are very disconnected. This paper intends to propose a solution that will provide citizens, businesses and medical enterprises with improved access to medical virtual public services. Referred medical services are based on existing national medical Web services and which support medically required services provided by physicians and supplementary health care practitioners, laboratory services and diagnostic procedures, clinics and hospitals’ services. Requirements and specific rules of these medical services are considered, and personalization of user preferences will to be supported. The architecture is based on adaptable process management technologies, allowing for virtual services which are dynamically combined from existing national medical services. In this way, a comprehensive workflow process is set up, allowing for service-level agreements, an audit trail and explanation of the process to the end user. The process engine operates on top of a virtual repository, providing a high-level semantic view of information retrieved from heterogeneous information sources, such as national sources of medical services. The system relies on a security framework to ensure all high-level security requirements are met. System’s architecture is business oriented: it focuses on Service Oriented Architecture - SOA concepts, asynchronously combining Web services, Business Process Management – BPM rules and BPEL standards.

  14. Does Peacetime Military Service Affect Crime?

    DEFF Research Database (Denmark)

    Albæk, Karsten; Leth-Petersen, Søren; le Maire, Daniel

    2017-01-01

    Draft lottery data combined with Danish longitudinal administrative records show that military service can reduce criminal activity for youth offenders. For this group property crime is reduced, and our results indicate that the effect is unlikely to be the result of incapacitation only. We find...... no effect of military service on violent crime, on educational attainment, or on employment and earnings, either in the short or the long run. These results suggest that military service does not upgrade productive human capital directly, but rather impacts criminal activity through other channels...

  15. Service delivery, community development, and disability.

    Science.gov (United States)

    Murphy, John W

    2010-01-01

    Service delivery has traditionally been based on market forces. When this is the case, the community becomes a silent partner in this process. Services, accordingly, are directed mostly to correcting personal ills and have little to do with community uplift. Another model, based on the work of Amartya Sen, is available that conceptualizes interventions in a very different way. If understood in the context of community development, the focus of services is social change, rather than merely personal rehabilitation. This reorientation is discussed in this article.

  16. SSN Verification Service

    Data.gov (United States)

    Social Security Administration — The SSN Verification Service is used by Java applications to execute the GUVERF02 service using the WebSphere/CICS Interface. It accepts several input data fields...

  17. The Customer Service Experience.

    Science.gov (United States)

    Bell, Chip R.

    2001-01-01

    Discusses ways to embed customer service learning and customer loyalty including making customers think, examining every aspect of customers' service encounters with staff, providing follow-up, making learning fun, and involving customers in your business. (JOW)

  18. NAIP Public Image Services

    Data.gov (United States)

    Farm Service Agency, Department of Agriculture — This map provides a preview and information about the National Agriculture Imagery Program (NAIP) image services available on the APFO public image server. Click on...

  19. The Customer Service Experience.

    Science.gov (United States)

    Bell, Chip R.

    2001-01-01

    Discusses ways to embed customer service learning and customer loyalty including making customers think, examining every aspect of customers' service encounters with staff, providing follow-up, making learning fun, and involving customers in your business. (JOW)

  20. FRS REST Services

    Science.gov (United States)

    FRS exposes several REST services that allows developers to utilize a live feed of data from the FRS database. This web page is intended for a technical audience and describes the content and purpose of each service available.