WorldWideScience

Sample records for cesitlerinin elde edilmesi

  1. Kesikli, Doğrusal “Vidale-Wolfe Reklam Modeli”Nin Elde Edilmesi

    OpenAIRE

    EROL, Yalçın

    2013-01-01

    Doğrusal olmayan sistemlerin çözümü genellikle zordur. Bu türden sistemleri temsil edebilen doğrusal sistemleri elde etmek kolaylıklar sağlar. Bu çalışmada, sürekli-zamanlı, doğrusal olmayan Vidale-Wolfe reklam modelinden, doğrusal, kesikli-zamanlı Vidale-Wolfe reklam modeli elde edilmektedir.

  2. Collection and protection of digital evidences in audit processesDenetim süreçlerinde dijital delillerin elde edilmesi ve korunması

    Directory of Open Access Journals (Sweden)

    İlker Koç

    2015-11-01

    Full Text Available Wide usage of information technologies in banking, finance, health and other commercial sectors requires performing of audit of these sectors through information systems. Collecting and protecting electronic evidence is critically important for both judicial process and results of audit activities. Gathering electronic evidences from an information system is a subject for computer forensics and requires special expertise and equipment. Conversely, in Turkey, most of the  institutions responsible for  supervision of financial and other relevant sectors have not enough knowledge and experience about forensic audit. Due to the absence of technical knowledge and tools, there would be deficiencies in collecting electronic evidence in accurate manner. In order to prevent these deficiencies, some alternative solutions are offered in this study. These solutions are adapting the computer forensic techniques to audit processes, providing appropriate training to auditors, establishing a legal environment, sharing of information system audit resource and outsourcing of forensic audit activities.   Özet Bankacılık, finans, sağlık ve diğer ticari sektörlerde bilgi teknolojilerinin kullanımının artması, denetim faaliyetlerinin de bilgi sistemleri üzerinden gerçekleştirilmesi gereksinimini doğurmaktadır. Elektronik ortamlardan dijital delil elde edilmesi ve korunması hem denetim faaliyetinin sonuçları hem de adli süreç açısından önem taşımaktadır. Dijital delillerin elde edilmesi ve korunması adli bilişim faaliyeti kapsamına girmektedir. Adli bilişim faaliyeti uzmanlık ve özel donanımların kullanımını gerektirmektedir. Ancak, Türkiye’de dış denetimle görevli kurumların faaliyetlerinde, adli bilişim yöntemlerine ilişkin yeterli teknik bilgi ve donanım bulunmamaktadır. Bu durum nedeniyle kamu denetim faaliyetlerinde dijital ortamlardan delil elde edilmesi ve korunmasında çeşitli eksiklikler söz konusudur

  3. Cosmological magnetic fields

    Indian Academy of Sciences (India)

    Roy Maartens

    2000-10-01

    Magnetic fields are observed not only in stars, but in galaxies, clusters, and even high redshift Lyman- systems. In principle, these fields could play an important role in structure formation and also affect the anisotropies in the cosmic microwave background radiation (CMB). The study of cosmological magnetic fields aims not only to quantify these effects on large-scale structure and the CMB, but also to answer one of the outstanding puzzles of modern cosmology: when and how do magnetic fields originate? They are either primordial, i.e. created before the onset of structure formation, or they are generated during the process of structure formation itself.

  4. Concept of multipole magnetic field rotation in ECRIS

    Indian Academy of Sciences (India)

    M H Rashid; R K Bhandari

    2002-11-01

    The conventional type of magnetic well is formed by superposition of two types of magnetic field, axial bumpy field and radial multipole field. It is used to contain plasma that consists of neutrals, ions and electrons. These particles are in constant motion in the well and energetic electrons create plasma by violent collisions with neutrals and ions. The confined electrons are constantly heated by ECR technique in the presence of magnetic field. In this paper it has been shown theoretically that how the electron motion is influenced in terms of heating, containment and azimuthal uniformity of plasma, by the axial rotation of the multipole magnetic field [1,2]. Afterwards, the feasibility of achieving a rotating magnetic multipole field is discussed to some extent. And it is seen that it is not beyond the capability of the scientific community in the present scenario of the advanced technology. Presently, it can be achieved for lesser field and slightly larger size of the multipole electromagnet and can be used for improvement of the ECR ion source (ECRIS).

  5. On the invariance properties of the Klein–Gordon equation with external electromagnetic field

    Indian Academy of Sciences (India)

    N D Sen Gupta

    2003-09-01

    Here we attempt to find the nature of the external electromagnetic field such that the KG equation with external electromagnetic field is invariant. Lie’s extended group method is applied to obtain the class of external electromagnetic field which admits the invariance of the KG equation. Though, the field potential only explicitly appears in the equation, the constraints for the invariance are only on the electromagnetic field.

  6. Magnetic field modulation spectroscopy of rubidium atoms

    Indian Academy of Sciences (India)

    S Pradhan; R Behera; A K Das

    2012-04-01

    The magnetically modulated saturation absorption profile is studied for a wide range of external DC magnetic field. The salient features of Doppler-free signal generated by laser frequency modulation and atomic energy level modulation are compared. The DC offset of the signal profile is found to be unstable as the external DC magnetic field is changed. The technical difficulty of tuning laser frequency under locked condition over a large frequency span is discussed along with possible solutions.

  7. High-order harmonic generation from eld-distorted orbitals

    DEFF Research Database (Denmark)

    Spiewanowski, Maciek; Etches, Adam; Madsen, Lars Bojer

    We investigate the eect on high-order harmonic generation of the distortion of molecular orbitals by the driving laser eld. Calculations for high-order harmonic generation including orbital distortion are performed for N2 (high polarizability). Our results allow us to suggest that field...

  8. Strong eld ionization of naphthalene: angular shifts and molecular potential

    DEFF Research Database (Denmark)

    Dimitrovski, Darko; Maurer, Jochen; Christensen, Lauge;

    We analyze the photoelectron momentum distributions from strong eld ionization of xed-in-space naphthalene molecules by circularly polarized laser pulses. By direct comparison between experiment and theory, we show that the angular shifts in the photoelectron momentum distributions are very...

  9. Invariance properties of the Dirac equation with external electro-magnetic field

    Indian Academy of Sciences (India)

    N D Sen Gupta

    2003-01-01

    In this paper, we attempt to obtain the nature of the external field such that the Dirac equation with external electro-magnetic field is invariant. The Poincar´e group, which is the maximal symmetry group for field free case, is constrained by the presence of the external field. Introducing infinitesimal transformation of x andψ, we apply Lie’s extended group method to obtain the class of external field which admit of the invariance of the equation. It is important to note that the constraints for the existence of invariance are explicity on the electric and magnetic field, though only potentials explicity appears in the equation.

  10. Radial oscillations of neutron stars in strong magnetic fields

    Indian Academy of Sciences (India)

    V K Gupta; Vinita Tuli; S Singh; J D Anand; Ashok Goyal

    2002-09-01

    The eigen frequencies of radial pulsations of neutron stars are calculated in a strong magnetic field. At low densities we use the magnetic BPS equation of state (EOS) similar to that obtained by Lai and Shapiro while at high densities the EOS obtained from the relativistic nuclear mean field theory is taken and extended to include strong magnetic field. It is found that magnetized neutron stars support higher maximum mass whereas the effect of magnetic field on radial stability for observed neutron star masses is minimal.

  11. On Bianchi-I cosmic strings coupled with Maxwell fields in bimetric relativity

    Indian Academy of Sciences (India)

    V Mahurpawar; S D Deo

    2003-10-01

    Axially symmetric Bianchi-I model is studied with source cosmic cloud strings coupled with electromagnetic field in Rosen’s bimetric theory of relativity and observed that there is no contribution from cosmic strings and Maxwell fields in this theory.

  12. Topological field patterns in the Yang–Mills theory

    Indian Academy of Sciences (India)

    E Harikumar; Indrajit Mitra; H S Sharatchandra

    2003-11-01

    We present a formalism where the topological configurations of pure Yang–Mills theory are characterised using gauge fields alone. Here, we obtain an expression for the charges of these topological (3) gauge field configurations in terms of the Abelian vector potentials. In this formalism we analyse the ’t Hooft–Polyakov monopole solution.

  13. Generation and measurement of multi megagauss fields in inertial magnets

    Indian Academy of Sciences (India)

    N Nalini; T C Kaushik; S C Gupta

    2010-10-01

    We present here the development of a facility to generate high (multi megagauss) magnetic field of 4 to 5 s rise time, using inertial magnets. The facility includes a low inductance, high current capacitor bank (280 kJ/40 kV) and an inertial magnet, which is a copper disk machined to have a keyhole in it. As the high current from the capacitor bank is discharged through the copper disk, a high magnetic field is produced along its axis, before it is destroyed by the combined effect of the dynamic loading and skin effect. A maximum peak magnetic field of 257 T is realized, when the magnet with 3·6 mm inner diameter, 35 mm outer diameter and 5 mm length, is powered by the capacitor bank charged to 28 kV (134 kJ). The transient magnetic field is measured using a B dot probe with an error of ±25 T. The probe in most of high field shots (> 200 T) got destroyed before recording the peak field and the trailing edge of the magnetic field. Experimental evidence of enhancement of the probe survival for longer time in copper disks using spatial non-uniform conductivity with 1 mm thick SS brazed to the inner wall of the inertial magnet is also reported.

  14. Combined full field stress and strain measurement methods for granular materials

    Directory of Open Access Journals (Sweden)

    Broere W.

    2010-06-01

    Full Text Available The current paper re-introduces the photoelastic measurement method in experimental geomechanics. A full-field phase stepping polariscope suitable for geomechanical model tests has been developed. Additional constraints on the measurement and mechanical setup arising from geomechanical test conditions are outlined as well as the opportunity to measure the displacement fields in the sample with digital image correlation. The capability of the current setup in retrieving the stress and strain field in a granular material is demonstrated.

  15. Dynamics of cascade three-level system interacting with the classical and quantized field

    Indian Academy of Sciences (India)

    Mihir Ranjan Nath; Surajit Sen; Gautam Gangopadhyay

    2003-12-01

    We study the exact solutions of the cascade three-level atom interacting with a single mode classical and quantized field with different initial conditions ofthe atom. For the semiclassical model, it is found that if the atom is initially in the middle level, the time-dependent populations of the upper and lower levels are always equal. This dynamical symmetry exhibited by the classical field is spoiled on quantization of the field mode. To reveal this non-classical effect, a Euler matrix formalism is developed to solve the dressed states of the cascade Jaynes–Cummings model (JCM). Possible modification of such an effect on the collapse and revival phenomenon is also discussed by taking the quantized field in a coherent state.

  16. Tokamak Plasmas : Internal magnetic field measurement in tokamak plasmas using a Zeeman polarimeter

    Indian Academy of Sciences (India)

    M Jagadeeshwari; J Govindarajan

    2000-11-01

    In a tokamak plasma, the poloidal magnetic field profile closely depends on the current density profile. We can deduce the internal magnetic field from the analysis of circular polarization of the spectral lines emitted by the plasma. The theory of the measurement and a detailed design of the Zeeman polarimeter constructed to measure the poloidal field profile in the ADITYA tokamak are presented. The Fabry-Perot which we have employed in our design, with photodiode arrays followed by lock-in detection of the polarization signal, allows the measurement of the fractional circular polarization. In this system He-II line with wavelength 4686 Å is adopted as the monitoring spectral line. The line emission used in the present measurement is not well localized in the plasma, necessiating the use of a spatial inversion procedure to obtain the local values of the field.

  17. The Diffuse Approximation: a derivative tool dedicated to full-field measurements

    Directory of Open Access Journals (Sweden)

    Villon P.

    2010-06-01

    Full Text Available This study proposes a filtering tool based on the diffuse approximation, in order to reconstruct strain fields from full-field displacement measurements. The question of the filtering of the noise is adressed and an alternative approach based on space-time filtering is proposed. The methods are then applied to the detection of early damage detection on a tensile test on an interlock composite.

  18. The influence of a transverse magnetic field on a subnormal glow discharge in air

    Indian Academy of Sciences (India)

    D C Jana; S S Pradhan

    2001-01-01

    In subnormal glow discharge under d.c. excitation at different pressure in a varying transverse magnetic field (0 to 30 G) some measurements have been carried out for various initial average tube currents. The voltage across the discharge increases and average tube current and residual current decreases in the magnetic field. With the help of Beckman’s expression [4] for the axial field and the electron density distribution in a transverse magnetic field the observed variation of current and voltage can be satisfactorily explained. The variation of axial electric field with transverse magnetic field can be represented to a fair degree of accuracy by the derived equation. The behaviour of residual current with magnetic field has been observed in these oscillations.

  19. On a new formulation of microphenomena: Basic principles, stationary fields and beyond

    Indian Academy of Sciences (India)

    Afshin Shafiee

    2011-06-01

    In a series of essays, beginning with this article, we are going to develop a new formulation of microphenomena based on the principles of reality and causality. The new theory provides us with a new depiction of microphenomena assuming a unified concept of information, matter and energy. So, we suppose that in a definite microphysical context (including other interacting particles), each particle is enfolded by a probability field whose existence is contingent on the existence of the particle, but it can locally affect the physical status of the particle in a context-dependent manner. The dynamics of the whole particle-field system obeys deterministic equations in a manner such that when the particle is subjected to a conservative force, the field also experiences a conservative complex force, the form of which is determined by the dynamics of the particle. So, the field is endowed with a given amount of energy, but its value is contingent on the physical conditions the particle is subjected to. Based on the energy balance of the particle and its associated field, we argue why the field has a probabilistic objective nature. The basic elements of this new formulation, its application for some stationary states and its nonlinear generalization for conservative systems are discussed here.

  20. Complex seismic wavefi eld interpolation based on the Bregman iteration method in the sparse transform domain

    Institute of Scientific and Technical Information of China (English)

    Gou Fu-Yan; Liu Cai; Liu Yang; Feng Xuan; Cui Fang-Zi

    2014-01-01

    In seismic prospecting,fi eld conditions and other factors hamper the recording of the complete seismic wavefi eld; thus, data interpolation is critical in seismic data processing. Especially, in complex conditions, prestack missing data affect the subsequent high-precision data processing workfl ow. Compressive sensing is an effective strategy for seismic data interpolation by optimally representing the complex seismic wavefi eld and using fast and accurate iterative algorithms. The seislet transform is a sparse multiscale transform well suited for representing the seismic wavefield, as it can effectively compress seismic events. Furthermore, the Bregman iterative algorithm is an efficient algorithm for sparse representation in compressive sensing. Seismic data interpolation methods can be developed by combining seismic dynamic prediction, image transform, and compressive sensing. In this study, we link seismic data interpolation and constrained optimization. We selected the OC-seislet sparse transform to represent complex wavefields and used the Bregman iteration method to solve the hybrid norm inverse problem under the compressed sensing framework. In addition, we used an H-curve method to choose the threshold parameter in the Bregman iteration method. Thus, we achieved fast and accurate reconstruction of the seismic wavefi eld. Model andfi eld data tests demonstrate that the Bregman iteration method based on the H-curve norm in the sparse transform domain can effectively reconstruct missing complex wavefi eld data.

  1. The origin of the strongest magnetic fields in dwarfs

    Indian Academy of Sciences (India)

    Christopher A Tout

    2011-07-01

    White dwarfs have frozen in magnetic fields ranging from below the measurable limit of about 3 × 103 to 109 G. White dwarfs with surface magnetic fields in excess of 1 MG are found as isolated single stars and relatively more often in magnetic cataclysmic variables. Some 1253 white dwarfs with a detached low-mass main-sequence companion have been identified in the Sloan Digital Sky Survey (SDSS) but none of these shows sufficient evidence for Zeeman splitting of hydrogen lines for a magnetic field in excess of 1 MG. If such high magnetic fields in white dwarfs result from the isolated evolution of a single star then there should be the same fraction of high field white dwarfs among this SDSS binary sample as among single stars. Thus, we deduce that the origin of such high magnetic fields must be intimately tied to the formation of cataclysmic variables (CVs). The formation of a CV must involve orbital shrinkage from giant star to main-sequence star dimensions. It is believed that this shrinkage occurs as the low-mass companion and the white dwarf spiral together inside a common envelope. CVs emerge as very close but detached binary stars that are then brought together by magnetic braking or gravitational radiation. We propose that the smaller the orbital separation at the end of the common envelope phase, the stronger the magnetic field. The magnetic cataclysmic variables (MCVs) originate from those common envelope systems that almost merge. Those common envelope systems that do merge are the progenitors of the single high field white dwarfs. Thus all highly magnetic white dwarfs, be they single stars or the components of MCVs, have a binary origin. This accounts for the relative dearth of single white dwarfs with fields of 104 – 106 G. Such intermediate-field white dwarfs are found preferentially in cataclysmic variables. The bias towards higher masses for highly magnetic white dwarfs is expected if a fraction of these form when two degenerate cores

  2. Magnetic-field-induced valence transition in rare-earth systems

    Indian Academy of Sciences (India)

    G Gangadhar Reddy; A Ramakanth; S K Ghatak

    2002-05-01

    The magnetic-field-induced valence transition in rare-earth systems has been investigated using the periodic Anderson model supplemented by the Falicov–Kimball term. This model has been solved by first decoupling the Falicov–Kimball term as proposed by Khomskii and Koharjan and then taking the limit of infinite intra-site Coulomb repulsion. The valence transition both in the absence and in the presence of magnetic field as a function of temperature is studied. It has been found that the system makes transition from non-magnetic to magnetic state when the magnetic field increases beyond a critical value c. The phase boundary defined in terms of reduced field c()/c(0) and reduced temperature /v (v being the valence transition temperature in the absence of field) is almost independent of the position of the localized level. The results are in qualitative agreement with experimental observations in Yb- and Eu-compounds.

  3. Evanescent magnetic field effects on entropy generation at the onset of natural convection

    Indian Academy of Sciences (India)

    Mourad Magherbi; Atef El Jery; Nejib Hidouri; Ammar Ben Brahim

    2010-04-01

    This paper numerically investigates the effect of an externally evanescent magnetic field on total entropy generation in a fluid enclosed in a square cavity by using a control volume finite element method to solve the conservation equations at Prandtl number of 0·71. The values of relaxation time of the magnetic field are chosen, so that the Lorentz force acts only in the transient state of entropy generation in natural convection. The total entropy generation was calculated for, fixed value of irreversibility distribution ratio, different relaxation time varying from 0 to 1/5 and Grashof number varying from 104 to 105. The effects of the Hartman number and the magnetic field inclination angle on the evolution of total entropy generation throughout the transient regime were investigated. Results show that the application of evanescent magnetic field not only suppresses the fluctuation of the total entropy generation in the transient state, but also reduces the gap for magnetic field relaxation time less than 1/10.

  4. Siyanobakteriden elde edilen fikosiyaninin saflaştırılması ve karakterizasyonu

    OpenAIRE

    Akoğlu, Aylin

    2012-01-01

    Bu çalışmada yüksek fikosiyanin verimine sahip siyanobakteri suşunun seçimi, suşun fikosiyanin veriminin artırılması, ekstrakte edilen fikosiyaninin stabilitesinin belirlenmesi, saflaştırılması ve karakterize edilmesi amaçlanmıştır.

     Çalışmanın ilk aşamasında çeşitli siyanobakteri suşları fikosiyanin verimleri açısından karşılaştırılmış ve Anabaena affinis suşu 110 mg/g fikosiyanin miktarı ile en verimli suş...

  5. Laser Plasmas : Density oscillations in laser produced plasma decelerated by external magnetic field

    Indian Academy of Sciences (India)

    V N Rai; M Shukla; H C Pant

    2000-11-01

    This paper presents the dynamics as well as the stability of laser produced plasma expanding across the magnetic field. Observation of some high frequency fluctuations superimposed on ion saturation current along with structuring in the pin hole images of x-ray emitting plasma plume indicate the presence of instability in the plasma. Two type of slope in the variation of x-ray emission with laser intensity in the absence and presence of magnetic field shows appearance of different threshold intensity of laser corresponding to each magnetic field at which this instability or density fluctuation sets on. This instability has been identified as a large Larmor radius instability instead of classical Rayleigh-Taylor (R-T) instability.

  6. Cosmological model of interacting phantom and Yang–Mills fields

    Indian Academy of Sciences (India)

    V K Shchigolev

    2012-05-01

    In this paper, we consider a model of interacting phantom and Yang–Mills (YM) fields by assuming dilaton-type coupling. Using the specific solution for YM equation previously found by the author, we obtain simple exact solutions for the accelerated expansion of the Friedmann–Robertson–Walker (FRW) cosmological model. Besides, we derive induced potentials of phantom field corresponding to some given regimes of expansion. The effective equations of state (EoS) have been reconstructed for all types of models considered here.

  7. Semileptonic ( → ) decay in a field theoretic quark model

    Indian Academy of Sciences (India)

    R K Das; A R Panda; R K Sahoo; M R Swain

    2002-03-01

    The semileptonic decay width of heavy baryons such as ( → ) has been estimated in the framework of a nonrelativistic field theoretic quark model where four component quark field operators along with a harmonic oscillator wave function are used to describe translationally invariant hadronic states. The present estimation does not make an explicit use of heavy quark symmetry and has a reasonable agreement with the experimentally measured decay width, polarisation ratio and form factors with the harmonic oscillator radii and quark momentum distribution inside the hadron as free parameters.

  8. Cryptococcus Neoformans Kokenlerinin In Vitro Fenol Oksidaz Etkinliginin Belirlenmesi ve C. Neoformansı ın Candida Albicans Kolonilerinden Ay1rt Edilmesi i~in Pal Agar ve Niger Seed Agar Besiyerlerinin Karşılaştırılması

    OpenAIRE

    KANTARCIOĞLU, A. SERDA; YÜCEL, Ayhan; Vidottto, Valerio

    2008-01-01

    Cryptococcus Neoformans Kokenlerinin In Vitro Fenol Oksidaz Etkinliginin Belirlenmesi ve C. Neoformans11n Candida Albicans Kolonilerinden Ay1rt Edilmesi i~in Pal Agar ve Niger Seed Agar Besiyerlerinin Karfllaft1r1lmas1

  9. Gravitational field of spherical domain wall in higher dimension

    Indian Academy of Sciences (India)

    Farook Rahaman; Mehedi Kalam

    2002-01-01

    An exact solution of Einstein’s equations is found describing the gravitational field of a spherical domain wall with nonvanishing stress component in the direction perpendicular to the plane of the wall. Also we have studied the motion of test particle around the domain wall.

  10. Metal–insulator crossover in high c cuprates: A gauge field approach

    Indian Academy of Sciences (India)

    P A Marchetti; Z B Su; L Yu

    2002-05-01

    A metal–insulator crossover appears in the experimental data for in-plane resistivity of underdoped cuprates and a range of superconducting cuprates in the presence of a strong magnetic field suppressing superconductivity. We propose an explanation for this phenomenon based on a gauge field theory approach to the t-J model. In this approach, based on a formal spin-charge separation, the low energy effective action describes gapful spinons (with a theoretically derived doping dependence of the gap $m^{2}_{s}∼|{\\rm ln }|$) and holons with finite Fermi surface (F ∼ ) interacting via a gauge field whose basic effect on the spinons is to bind them into overdamped spin waves, shifting their gap by a damping term linear in , which causes the metal–insulator crossover. The presence of a magnetic field perpendicular to the plane acts by increasing the damping, in turn producing a big positive transverse in-plane magnetoresistance at low , as experimentally observed.

  11. Types of two-dimensional = 4 superconformal field theories

    Indian Academy of Sciences (India)

    Abbas Ali

    2003-12-01

    Various types of = 4 superconformal symmetries in two dimensions are considered. It is proposed that apart from the well-known cases of (2) and (2)× (2)× (1), their Kac–Moody symmetry can also be (2)× ((1))4. Operator product expansions for the last case are derived. A complete free field realization for the same is obtained.

  12. Self-field effects on small-signal gain in two-stage free-electron lasers

    Indian Academy of Sciences (India)

    S Jafari; H Mehdian; A Hasanbeigi

    2011-03-01

    Self-field effects, induced by charge and current densities of the electron beam, on gain in two-stage free-electron laser with nonuniform guide magnetic field is presented. The gain equation for small-signal has been derived analytically. The results of numerical calculations show a gain decrement for group I orbits and a gain enhancement for group II orbits, due to the self-field effects. The wiggler-induced self-magnetic field has a diamagnetic effect for group I orbits, whereas for group II, it has a paramagnetic effect. It is also found that using a nonuniform guide field, rather than a uniform one, causes the gain to increase.

  13. Long-term monitoring of nitrate transport to drainage from three agricultural clayey till fields

    DEFF Research Database (Denmark)

    Ernstsen, Vibeke; Olsen, Preben; Rosenbom, Annette E.

    2015-01-01

    -regulation in future. This study strives to provide such knowledge by evaluating on 11 years of nitrate-N con-centration measurements in drainage from three subsurface-drained clayey till fields (1.3–2.3 ha) representing approxi-mately 71 % of the surface sediments in Denmark dominated by clay. The fields differ...... given the temperature-dependent reduction potential of nitrate off-field. This initial well-documented field-scale knowledge from fields that are representative of large areas in Denmark is a first step towards establishing a differentiated N-regulation for clayey till areas. Additionally, it provides...

  14. Phenomenology of a realistic accelerating universe using tracker fields

    Indian Academy of Sciences (India)

    Vinod B Johri

    2002-09-01

    We present a realistic scenario of tracking of scalar fields with varying equation of state. The astrophysical constraints on the evolution of scalar fields in the physical universe are discussed. The nucleosynthesis and the galaxy formation constraints have been used to put limits on and estimate during cosmic evolution. Interpolation techniques have been applied to estimate ≃ 0.772 at the present epoch. The epoch of transition from matter to quintessence dominated era and consequent onset of acceleration in cosmic expansion is calculated and taking the lower limit $^{0}_{n} = 0.2$ as estimated from data, it is shown that the supernova observations beyond redshift = 1 would reveal deceleration in cosmic expansion.

  15. Simulations of the electromagnetic calorimeter in the presence of magnetic eld for the FCChh

    CERN Document Server

    Matas, Marek

    2016-01-01

    This work was focused on studying the properties of the electromagnetic calorimeter for the Future Circular Collider (FCC) [1]. FCC is an accelerator that will possibly be built in the 2040s-2050s. Its circumference would be 100 km with the center of mass energy ps=100TeV in proton-proton collisions. Detectors used to record FCC collisions will consist of the tracker, cryostat, electromagnetic calorimeter (EMCal), hadronic calorimeter (HCal) and muon chambers. In this work, we shall study the EMCal and its properties. One of the properties of the environment that this particular detector will have to face is the presence of a strong magnetic eld in the volume of the calorimeter. Studies carried out in this work are preliminary studies focused on addressing the eects that the magnetic eld will have on the electromagnetic shower evolution.

  16. Magnetization curves for non-elliptic cylindrical samples in a transverse field

    Indian Academy of Sciences (India)

    Debjani Karmakar; K V Bhagwat

    2001-01-01

    Using recent results for the surface current density on cylindrical surfaces of arbitrary cross-section producing uniform interior magnetic field and an assumed set of flux-fronts, solutions of Bean’s critical state model for cylindrical samples with non-elliptic cross-section are presented. Magnetization hysteresis loops for two cross-sections with different aspect ratios are obtained. A comparison with some exact results shows the limitations of this approach.

  17. Mechanical properties of low density polymeric foams obtained from full-field measurements

    Directory of Open Access Journals (Sweden)

    Pierron F.

    2010-06-01

    Full Text Available This exploratory paper presents some preliminary results on the use of fullfield deformation measurements on low density polymeric foams to identify the evolution of Poisson’s ratio with compressive strain. Two types of foams were tested: a standard low density polyurethane foam and an auxetic foam manufactured from a similar precursor. 2D digital image correlation was used to measure the strain field at the specimens surfaces. Then, Poisson’s ratios were identified using a dedicated inverse method called the Virtual Fields Method (VFM and the results compared with the standard approaches. The results illustrate the advantages of the VFM compared to the standard procedure. It was also found that for the standard foam, very strong localization effects resulted in biased Poisson’s ratio evaluation. It was shown that this could be corrected by taking into account these localization effects thanks to the full-field information.

  18. Computation of flow and thermal fields in a model CVD reactor

    Indian Academy of Sciences (India)

    Vishwadeep Saxena; K Muralidhar; V Eswaran

    2002-12-01

    Mixing of coaxial jets within a tube in the presence of blockage has been numerically studied. This configuration is encountered during the modelling of flow and heat transfer in CVD (chemical vapour deposition) reactors. For the conditions prevailing in the reactor, the Reynolds numbers are low and flow can be taken to be laminar and incompressible. The unsteady forms of the governing equations have been solved by a finite volume method that can treat complex three-dimensional geometries. The algorithm is a two-step procedure, wherein the first step predicts the velocity field using an assumed pressure field. The second step corrects the fields using a Poisson equation to obtain the pressure corrections. Advection terms have been treated by a hybrid upwind-central difference technique. The computer code developed is fully three-dimensional, though most computations of the present study have been carried out for two-dimensional geometry. Results have been obtained in the form of velocity vector plots, wall shear stress variation on the block and the tube wall, isotherms and temperature profiles. The flow and heat transfer characteristics of jet mixing have been explored in terms of the Reynolds number, the jet velocity ratio, the axial position of the block, and the blockage ratio. The results obtained show that a proper combination of the process parameters can lead to an improved performance of the CVD reactor.

  19. Low-field vortex dynamics in various high-c thin films

    Indian Academy of Sciences (India)

    Johan J Åkerman; K V Rao

    2002-05-01

    We present a novel ac susceptibility technique for the study of vortex creep in superconducting thin films. With this technique we study the dynamics of dilute vortices in -axis oriented Y-123, Hg-1212, and Tl-1212 thin films, as well as -axis oriented Hg-1212 thin films. Results on the Hg-1212 and Tl-1212 thin films indicate that dislocation-mediated plastic flux creep of single vortices dominates at low temperatures and fields. As the temperature (or the field) is increased, the increasing vortex–vortex interactions promote a collective behavior, which can be characterized by elastic creep with a non-zero exponent. Also, in some of these samples effects of thermally assisted quantum creep are visible up to 45 K in some of these samples. In Y-123 thin films, creep is found to be collective down to the lowest temperatures and fields investigated, while the quantum creep persists only up to 10–11 K.

  20. On the effect of a longitudinal magnetic field on oscillatory characteristics of a subnormal region in discharge in argon

    Indian Academy of Sciences (India)

    D C Jana; S S Pradhan

    2003-06-01

    Oscillating nature of current pulses under d.c. excitation in subnormal region with longitudinal magnetic field at pressure range 0.20 torr to 0.85 torr have been studied. The frequency, bandwidth, peak–peak voltage, cut-off current and rise time of the current pulses have been observed with pressure, average tube current and magnetic field. A study of these oscillograms in magnetic field, average tube current and pressure are presented. The probable mechanism for the generation of oscillation based on space-charge field modification with magnetic field is discussed.

  1. Numerical investigation of space charge electric field for a sheet electron beam between two conducting planes

    Indian Academy of Sciences (India)

    Arti Gokhale; Preeti Vyas; J Panikar; Y Choyal; K P Maheshwari

    2002-01-01

    Analytical and numerical study of the stability of sheet electron beam in periodically cusped magnetic field (PCM) is made. The beam has been considered as having diffused density profile. The conditions for beam focusing are discussed.

  2. Mössbauer studies of hyperfine fields in disordered Fe2CrAl

    Indian Academy of Sciences (India)

    N Lakshmi; K Venugopalan; J Varma

    2002-09-01

    Heusler-like alloy Fe2CrAl was prepared and studied. Structure determination was done by X-ray. The structure was found to conform to the B2 type. Magnetic hyperfine fields in this sample were studied by the Mössbauer effect. The Mössbauer spectra were recorded over a range of temperature from 40 to 296 K. The Mössbauer spectra showed the co-existence of a paramagnetic part with a magnetic hyperfine portion at all recorded temperatures. Even with the distribution in the magnetic hyperfine field, the average hyperfine field follows the $(T=T_{c})^{3/2}$ law. The paramagnetic part of the hyperfine field is explained in terms of the clustering of Cr atoms.

  3. Triploid karpuz tohumlarının çimlenme kapasitesinin tohum uygulamaları ile teşvik edilmesi

    OpenAIRE

    KİREMİT, Merve

    2015-01-01

    Bu araştırma, triploid karpuz tohumlarına (Citrullus lanatus (Thunb.) Matsum. & Nakai) ait Bonny, Pixie ve Estel Deluxe çeşitlerinin çimlenme kapasitelerinin tohum uygulamaları ile teşvik edilmesi amacıyla 2014-2015 yılları arasında Ankara Üniversitesi Bahçe Bitkileri Bölümü Tohum Bilimi Laboratuvarında yürütülmüştür.Araştırmanın 3 aşaması bulunmaktadır. İlk aşamada tüm çeşitlere, tohum kabuğunu aşındırmak ve/veya tohumda O₂ miktarını artırmak amaçlarıyla çeşitli uygulama kom...

  4. Time-reversal symmetry breaking by ac field: Effect of commensurability in the frequency domain

    Indian Academy of Sciences (India)

    V E Kravtsov

    2002-02-01

    It is shown that the variance of the linear dc conductance fluctuations in an open quantum dot under high-frequency ac pumping depends significantly on the spectral content of the ac field. For a sufficiently strong ac field the dc conductance fluctuations are much stronger for the periodic pumping than in the case of the noise ac field of the same intensity. The reduction factor in a static magnetic field takes the universal value of 2 only for the white-noise pumping. In general may deviate from 2 thus signalling on the time-reversal breaking by the ac field. For the bi-harmonic ac field of the form () = 0 [cos(1 ) + cos(2 )] we predict the enchancement of effects of -symmetry breaking at commensurate frequencies 2/1 = /. In the high-temperature limit there is also the parity effect: the enchancement is only present if either or is even.

  5. Copulatory pattern and behavior in a semi-captive population of Eld's deer

    Institute of Scientific and Technical Information of China (English)

    Zhigao ZENG; Yan-Ling SONG; Qiong ZHANG

    2011-01-01

    Male copulatory patterns, female multiple copulation and male post-copulatory guarding were studied in Eld's deer Cervus eldi in Datian National Nature Reserve, China. Mating behavior in 18 females and 11 males from a group of 61 semi-captive Eld's deer were observed. The majority (55.8%) of copulations occurred between 15:00-19:00 h. The ejaculatory mount was preceded by an average of 5.1 prior mounts. Successful copulation consisted of a single thrust with ejaculation during one intromission, with no lock. This copulatory pattern is classified as pattern No. 15 (no lock, no intravaginal thrusting, single intromission, and multiple ejaculation) and No. 16 (no lock, no intravaginal thrusting, single intromission, and single ejaculation) under Dewsbury's scheme (1972) and as No. 16 (no lock, no thrusting, single and brief intromission) under Dixson's classification (1998). Copulation frequency was 1.5 0.9 times for males/ females with the same female/male per day. The duration of the final mount, which included ejaculation, was brief (3.4±1.3 s), and ejaculation usually terminated copulation. Eleven females copulated more than once in this study: three of them copulated with several males (multi-male copulations) and the remainder copulated with a single male (repeated copulations). Our results indicate that some female Eld's deer may seek multiple copulations to be a strategy to improve the genetic quality of their offspring or to avoid harassment. Post-copulatory guarding of females by males followed all copulations, with dominant males guarding for significantly longer than subordinate males. Dominant males appear to be more effective at post-copulatory guarding than subordinate males. Subordinate males engaged in a quicker pre-copulatory phase to improve their chances of finishing copulation before being forced to accede to dominant males.

  6. Quasi-static crack tip fields in rate-sensitive FCC single crystals

    Indian Academy of Sciences (India)

    P Biswas; R Narasimhan

    2012-02-01

    In this work, the effects of loading rate, material rate sensitivity and constraint level on quasi-static crack tip fields in a FCC single crystal are studied. Finite element simulations are performed within a mode I, plane strain modified boundary layer framework by prescribing the two term $(K −T)$ elastic crack tip field as remote boundary conditions. The material is assumed to obey a rate-dependent crystal plasticity theory. The orientation of the single crystal is chosen so that the crack surface coincides with the crystallographic (010) plane and the crack front lies along $[10\\bar{1}]$ direction. Solutions corresponding to different stress intensity rates $\\dot{K}$, -stress values and strain rate exponents are obtained. The results show that the stress levels ahead of the crack tip increase with $\\dot{K}$ which is accompanied by gradual shrinking of the plastic zone size. However, the nature of the shear band patterns around the crack tip is not affected by the loading rate. Further, it is found that while positive -stress enhances the opening and hydrostatic stress levels ahead of crack tip, they are considerably reduced with imposition of negative -stress. Also, negative -stress promotes formation of shear bands in the forward sector ahead of the crack tip and suppresses them behind the tip.

  7. Design, fabrication, and characterization of a solenoid system to generate magnetic field for an ECR proton source

    Indian Academy of Sciences (India)

    S K Jain; P A Naik; P R Hannurkar

    2010-08-01

    Solenoid coils with iron jacket (electromagnets) have been designed and developed for generation and confinement of the plasma produced by an electron cyclotron resonance source operating at 2450 MHz frequency. The magnetic field configurations designed using the solenoid coils are off-resonance, mirror, and flat, satisfying electron cyclotron resonance condition along the axis of the plasma chamber. 2D Poisson software was used for designing. Details of design, fabrication, and magnetic field mapping of the solenoid coils are presented in this paper.

  8. Strain field due to self-interstitial impurity in Ni

    Indian Academy of Sciences (India)

    Hitesh Sharma; S Prakash

    2003-01-01

    The embedded-atom method have been applied to study the strain field produced by the self-interstitial impurity at the octahedral site in Ni. The calculation have been carried out consistently on the basis of discrete lattice theory, using Kanzaki method. The atomic force constants are evaluated using Wills and Harrison interatomic potential. The dynamical matrix and external force are evaluated considering the interaction up to first nearest neighbors. The atomic displacements are tabulated up to 20NN’s. These displacements are of oscillatory nature and of decreasing magnitude with NN’s distance. The physical properties such as self-interstitial formation energy and volume change calculated using atomic displacements are in accordance with the earlier studies.

  9. Magnetization curves for general cylindrical samples in a transverse field

    Indian Academy of Sciences (India)

    K V Bhagwat; Debjani Karmakar

    2001-10-01

    Using the recent results for the surface current density on cylindrical surfaces of arbitrary cross-section producing uniform interior magnetic field we propose a method for obtaining solutions of Bean’s critical state model for general cylindrical samples. The method uses the technique of conformal mapping to express the sample surface and the flux-fronts in terms of a set of coefficients that depend on a parameter. The flux-fronts are to be determined by solving a system of nonlinear ordinary differential equations for the coefficients. Retaining only a certain finite number of leading coefficients we get an approximate solution. The procedure is illustrated by considering two cylindrical samples – one with an elliptical cross-section and the other with a non-elliptical cross-section. The virgin curve and small and large magnetization hysteresis loops for the two samples are obtained.

  10. Dielectric relaxation phenomena of rigid polar liquid molecules under giga hertz electric field

    Indian Academy of Sciences (India)

    K Dutta; S K Sit; S Acharyya

    2001-10-01

    The dielectric relaxation phenomena of rigid polar liquid molecules chloral and ethyltrichloroacetate () in benzene, -hexane and -heptane () under 4.2, 9.8 and 24.6 GHz electric fields at 30°C are studied to show the possible existence of double relaxation times 2 and 1 for rotations of the whole and the flexible parts of molecules. The probability of showing double relaxation is more in aliphatic solvents indicating their nonrigidity. The symmetric and asymmetric distribution parameters and are obtained from $'_{ij}/_{0ij}$ and $''_{ij}/_{0ij}$ at $w_{j}→ 0$ where $'_{ij}$ and $''_{ij}$ are real and imaginary parts of the complex orientational susceptibility $^{*}_{ij}$ and $_{0ij}$ is the low frequency susceptibility which is real. $_{ij}$’s are involved with the measured dielectric relative permittivities $'_{ij}$, $''_{ij}$, $_{0ij}$ and $_{∞ ij}$ of solutions. The theoretical weighted contributions $c_{1}$ and $c_{2}$ towards dielectric dispersions by Fröhlich’s method are compared with the experimental ones obtained from the graphical variation of $'_{ij}/_{0ij}$ and $''_{ij}/_{0ij}$ with weight fractions $w_{j}$’s at $w_{j}→ 0$. The measured dipole moments $_{2}$ and $_{1}$ of the whole and the flexible part of a polar molecule in terms of the linear coefficients 's of $'_{ij}$’s with $w_{j}$’s and the estimated $_{2}$ and $_{1}$ reveal their associations with aliphatic solvents. The theoretical dipole moments $_{\\text{theo}}$’s from the available bond angles and bond moments of the substituent polar groups of the molecules with the estimated ’s suggest the mesomeric, inductive and electromeric effects in them under GHz electric field.

  11. Habitat selection by Eld's deer following relocation to a patchy landscape.

    Science.gov (United States)

    Pan, Duo; Song, Yan-Ling; Zeng, Zhi-Gao; Bravery, Benjamin D

    2014-01-01

    An emerging issue in wildlife conservation is the re-establishment of viable populations of endangered species in suitable habitats. Here, we studied habitat selection by a population of Hainan Eld's deer (Cervus eldi) relocated to a patchy landscape of farmland and forest. Hainan Eld's deer were pushed to the brink of extinction in the 1970s, but their population expanded rapidly from 26 to more than 1000 individuals by 2003 through effective reserve protection. As part of a wider relocation and population management strategy, 131 deer were removed from the reserve and reintroduced into a farmland-forest landscape in 2005. Habitat use under a context of human disturbance was surveyed by monitoring 19 radio-collared animals. The majority of deer locations (77%) were within 0.6-2 km of villages. Annual home ranges of these collared deer averaged 725 ha (SD 436), which was 55% of the size of the reserve from which they had originated. The annual home ranges contained 54% shrub-grassland, 26% forest and 15% farmland. The relocated deer population selected landscape comprising slash-and-burn agriculture and forest, and avoided both intensively farmed areas and areas containing only forest. Within the selected landscape, deer preferred swiddens and shrub-grasslands. Forests above 300 m in elevation were avoided, whereas forests below 300 m in elevation were overrepresented during the dry season and randomly used during the wet season. Our findings show that reintroduced deer can utilize disturbed habitats, and further demonstrate that subsistence agroforest ecosystems have the capacity to sustain endangered ungulates. PMID:24614039

  12. Habitat selection by Eld's deer following relocation to a patchy landscape.

    Directory of Open Access Journals (Sweden)

    Duo Pan

    Full Text Available An emerging issue in wildlife conservation is the re-establishment of viable populations of endangered species in suitable habitats. Here, we studied habitat selection by a population of Hainan Eld's deer (Cervus eldi relocated to a patchy landscape of farmland and forest. Hainan Eld's deer were pushed to the brink of extinction in the 1970s, but their population expanded rapidly from 26 to more than 1000 individuals by 2003 through effective reserve protection. As part of a wider relocation and population management strategy, 131 deer were removed from the reserve and reintroduced into a farmland-forest landscape in 2005. Habitat use under a context of human disturbance was surveyed by monitoring 19 radio-collared animals. The majority of deer locations (77% were within 0.6-2 km of villages. Annual home ranges of these collared deer averaged 725 ha (SD 436, which was 55% of the size of the reserve from which they had originated. The annual home ranges contained 54% shrub-grassland, 26% forest and 15% farmland. The relocated deer population selected landscape comprising slash-and-burn agriculture and forest, and avoided both intensively farmed areas and areas containing only forest. Within the selected landscape, deer preferred swiddens and shrub-grasslands. Forests above 300 m in elevation were avoided, whereas forests below 300 m in elevation were overrepresented during the dry season and randomly used during the wet season. Our findings show that reintroduced deer can utilize disturbed habitats, and further demonstrate that subsistence agroforest ecosystems have the capacity to sustain endangered ungulates.

  13. Electric field generated solitons, disclinations and vortical flows in freely suspended nematic 8CB

    Indian Academy of Sciences (India)

    K S Krishnamurthy; R Balakrishnan

    2003-08-01

    We present the results of optical studies on the instabilities in a substrate-free nematic 8CB film, subject to an in-plane electric field. The initial director field involves a -1/2 strength disclination loop, separating the central pseudoisotropic zone from the splay-bend (SB) birefringent boundary. Three regimes of sample thickness are distinguishable on the basis of field-induced instabilities. Thick (∼ 75 m) films display growth of SB zones (independently of disclination movement), wall-formation, and reversible transition between walls and disclinations. Moderately thick films, a few m in the central part, exhibit distinctive undulations at the border of advancing SB layers. Submicron thin films, with smectic-like homeotropic central plateau, show spectacular isotropic vortex-pairs at either end of this plateau. Further, the end regions of the birefringent zone exhibit both electro-convective flows and reorientational effects. The latter are associated with the formation of open and closed walls, and loop-wall emission. The final high field instability involves jet-like flows at the two ends of the film.

  14. Analytic methods for field induced tunneling in quantum wells with arbitrary potential profiles

    Indian Academy of Sciences (India)

    S Panda; B K Panda

    2001-06-01

    Electric field induced tunneling is studied in three different types of quantum wells by solving time-independent effective mass equation in analytic methods based on three different Airy function approaches. Comparison of different Airy function methods indicates that they are identical and connected to each other by the Breit–Wigner formula.

  15. Simplified and Expanded Input in a Focused Stimulation Program for a Child with Expressive Language Delay (ELD)

    Science.gov (United States)

    Wolfe, Donna L.; Heilmann, John

    2010-01-01

    There is considerable debate regarding the simplification of adults' language when talking to young children with expressive language delays (ELD). While simplified input, also called telegraphic speech, is used by many parents and clinicians working with young children, its use has been discouraged in much of the clinical literature. In addition…

  16. Viscoelastic material properties’ identification using high speed full field measurements on vibrating plates

    Directory of Open Access Journals (Sweden)

    Pierron F.

    2010-06-01

    Full Text Available The paper presents an experimental application of a method leading to the identification of the elastic and damping material properties of isotropic vibrating plates. The theory assumes that the searched parameters can be extracted from curvature and deflection fields measured on the whole surface of the plate at two particular instants of the vibrating motion. The experimental application consists in an original excitation fixture, a particular adaptation of an optical full-field measurement technique, a data preprocessing giving the curvature and deflection fields and finally in the identification process using the Virtual Fields Method (VFM. The principle of the deflectometry technique used for the measurements is presented. First results of identification on an acrylic plate are presented and compared to reference values. Details about a new experimental arrangement, currently in progress, is presented. It uses a high speed digital camera to over sample the full-field measurements.

  17. Instability of quark matter core in a compact newborn neutron star with moderately strong magnetic field

    Indian Academy of Sciences (India)

    Sutapa Ghosh; Somenath Chakrabarty

    2003-05-01

    It is explicitly shown that if phase transition occurs at the core of a newborn neutron star with moderately strong magnetic field strength, which populates only the electron’s Landau levels, then in the -equilibrium condition, the quark core is energetically much more unstable than the neutron matter of identical physical condition.

  18. Remarks on quantum field theory on de Sitter and anti-de Sitter space-times

    Indian Academy of Sciences (India)

    Henri Epstein

    2012-06-01

    This is a short review of work done in common with Jacques Bros, Michel Gaudin, Ugo Moschella, and Vincent Pasquier. Among results are explicit Källén–Lehmann representations for products of two free-field two-point functions in the de Sitter and the anti-de Sitter spaces and applications to particle decay.

  19. Dynamical interplay between fluctuations, electric fields and transport in fusion plasmas

    Indian Academy of Sciences (India)

    C Hidalgo; B Gonçalves; M A Pedrosa

    2003-12-01

    A view of recent experimental results and progress in the characterization of the statistical properties of electrostatic turbulence in magnetically confined devices is given. An empirical similarity in the scaling properties of the probability distribution function (PDF) of turbulent transport has been observed in the plasma edge region in fusion plasmas. The investigation of the dynamical interplay between fluctuation in gradients, turbulent transport and radial electric fields has shown that these parameters are strongly coupled both in tokamak and stellarator plasmas. The bursty behaviour of turbulent transport is linked with a departure from the most probable radial gradient. The dynamical relation between fluctuations in gradients and transport is strongly affected by the presence of sheared poloidal flows which organized themselves near marginal stability. These results emphasize the importance of the statistical description of transport processes in fusion plasmas as an alternative approach to the traditional way to characterize transport based on the computation of effective transport coefficients.

  20. Strain field due to transition metal impurities in Ni and Pd

    Indian Academy of Sciences (India)

    Hitesh Sharma; S Prakash

    2003-01-01

    The strain field due to body centered substitutional transition metal impurities in Ni and Pd metals are investigated. The calculations are carried out in the discrete lattice model of the metal using Kanzaki lattice static method. The effective ion–ion interaction potential due to Wills and Harrison is used to evaluate dynamical matrix and the impurity-induced forces. The results for atomic displacements due to 3d, 4d and 5d impurities (Fe, Co, Cu, Nb, Mo, Pd, Pt and Au) in Ni and (Fe, Co, Cu, Ni, Nb, Mo, Pt and Au) impurities in Pd are given up to 25 NN’s of impurity and these are compared with the available experimental data. The maximum displacements of 4.6% and 3.8% of 1NN distance are found for NiNb and PdNb alloys respectively, while the minimum displacements of 0.63% and 0.23% of 1NN distance are found for NiFe and PdFe alloys respectively. Except for Cu, the atomic displacements are found to be proportional to the core radii and d state radius. The relaxation energies for 3d impurities are found less than those for 4d and 5d impurities in Ni and Pd metals. Therefore, 3d impurities may easily be solvable in these metals.

  1. A normalized wavefi eld separation cross-correlation imaging condition for reverse time migration based on Poynting vector

    Institute of Scientific and Technical Information of China (English)

    Chen Ting; He Bing-Shou

    2014-01-01

    Prestack reverse time migration (PSTM) is a common imaging method; however low-frequency noises reduce the structural imaging precision. Thus, the suppression of migration noises must be considered. The generation mechanism of low-frequency noises is analyzed and the up-, down-, left-, and right-going waves are separated using the Poynting vector of the acoustic wave equation. The computational complexity and memory capacitance of the proposed method are far smaller than that required when using the conventional separation algorithm of 2D Fourier transform. The normalized wavefield separation cross-correlation imaging condition is used to suppress low-frequency noises in reverse time migration and improve the imaging precision. Numerical experiments using the Marmousi model are performed and the results show that the up-, down-, left-, and right-going waves are well separated in the continuation of the wavefi eld using the Poynting vector. We compared the imaging results with the conventional method, Laplacianfi ltering, and wavefi eld separation with the 2D Fourier transform. The comparison shows that the migration noises are well suppressed using the normalized wavefi eld separation cross-correlation imaging condition and higher precision imaging results are obtained.

  2. Relaxation phenomena of polar non-polar liquid mixtures under low and high frequency electric field

    Indian Academy of Sciences (India)

    K Dutta; S K Sit; S Acharyya

    2003-10-01

    Simultaneous calculation of the dipole moment and the relaxation time of a certain number of non-spherical rigid aliphatic polar liquid molecules () in non-polar solvents () under 9.8 GHz electric field is possible from real $'$ and imaginary $''$ parts of the complex relative permittivity $^{*}_{}$. The low frequency and infinite frequency permittivities 0 and ∞ measured by Purohit et al [1,2] and Srivastava and Srivastava [3] at 25, 35 and 30°C respectively are used to obtain static . The ratio of the individual slopes of imaginary and real $'$ parts of high frequency (hf) complex conductivity $^{*}_{}$ with weight fractions at → 0 and the slopes of $''_{}-'_{}$ curves for different s [4] are employed to obtain s. The former method is better in comparison to the existing one as it eliminates polar–polar interaction. The hf s in Coulomb metre (C m) when compared with static and reported s indicate that ss favour the monomer formations which combine to form dimers in the hf electric field. The comparison among s shows that a part of the molecule is rotating under X-band electric field [5]. The theoretical theos from available bond angles and bond moments of the substituent polar groups attached to the parent molecules differ from the measured s and s to establish the possible existence of mesomeric, inductive and electromeric effects in polar liquid molecules.

  3. Genotyping of Klebsiella Pneumonia Strains Isolated from Eldly Inpatients by Multiple-locus Variable-number Tandem-repeat Analysis.

    Science.gov (United States)

    Zhang, Yuan-Yuan; Xu, Ya-Ping; DU, Peng-Cheng; Qiang, Yu-Jun; Zhang, Wen; Chen, Chen; Yu, Ji-Hong; Guo, Jun

    2016-08-01

    Objective To investigate the genotype of klebsiella pneumonia strains isolated from eldly inpatients by multiple-locus variable-number tandem-repeat analysis. Methods Totally 184 klebsiella pneumonia strains,isolated from eldly inpatients,were collected,and their genome DNA were extracted. The polymorphism of 7 variable-number tandem-repeat locus in the DNA samples was analyzed by multiple primers polymerase chain reaction and capillary electrophoresis. The clustering analysis of genotyping was carried out with the BioNumerics 5.1 software. Results A total of 139 genotypes were identified in 184 klebsiella pneumonia clinical strains,showing obvious genetic polymorphisms. With clustering analysis of genotypes,all the strains were categorized into three gene clusters (genogroups 1,2,and 3). The genogroup 1 was the biggest cluster,containing 93.06% of the isolated strains. Conclusion There was a predominant cluster in the klebsiella pneumonia strains isolated from eldly inpatients in our center,and the major source of klebsiella pneumonia infection remained the nosocomial infection. PMID:27594157

  4. Effect of magnetic field on the propagation of quasi-transverse waves in a nonhomogeneous conducting medium under the theory of nonlinear elasticity

    Indian Academy of Sciences (India)

    D P Acharya; Asit Kumar Mondal

    2006-06-01

    The object of the present paper is to investigate the propagation of quasi-transverse waves in a nonlinear perfectly conducting nonhomogeneous elastic medium in the presence of a uniform magnetic field transverse to the direction of wave propagation. Different types of figures have been drawn to exhibit the distortion of waves due to the presence of magnetic field and the nonhomogeneous nature of the medium. Formation of shocks has also been numerically discussed.

  5. The second Born approximation of electron–argon elastic scattering in a bichromatic laser field

    Indian Academy of Sciences (India)

    Bin Zhou; Ming-Yang Zheng; Da-Yong Wen

    2012-03-01

    We study the elastic scattering of atomic argon by electron in the presence of a bichromatic laser field in the second Born approximation. The target atom is approximated by a simple screening potential and the continuum states of the impinging and emitting electrons are described as Volkov states. We evaluate the S-matrix elements numerically. The dependence of differential cross-section on the relative phase between the two laser components is presented. The results obtained in the first and second Born approximations are compared and analysed.

  6. Rut-induced changes in the activity budgets of male tropical ungulates: Eld's deer on Hainan Island

    Institute of Scientific and Technical Information of China (English)

    Jianhua DING; Zhitao LIU; Yanling SONG; Zhigao ZENG; Qiong ZHANG; Benjamin D.BRAVERY

    2012-01-01

    Aspects of time budgets,activity patterns and rut-related changes in behavior are well documented in temperate ungulates; however,the application of this understanding to tropical and sub-tropical ungulate species has attracted less attention and remains an area that may re-shape our knowledge of ungulate behavior.Eld's deer Cervus eldi hainanus has a tropical and sub-tropical distribution on Hainan Island,China,and males have an extended rut exceeding five months during which they do not maintain harems or defend resources.We studied males from the only remaining population on Hainan Island,and describe rut-related changes in behavior by collecting data on time budgets and activity patterns.We show that male Eld's deer do not follow a strict crepuscular activity pattern,do not spend the majority of their time foraging and do not increase foraging nor display rut-induced hypophagia during rut,in obvious contrast to temperate ungulates.These results are discussed in light of current hypotheses explaining the proximate mechanisms governing feeding time in ungulates,while appreciating the need for further research.

  7. 老年人跌倒预测系统综述%Survey on the Eldly Fall Prediction System

    Institute of Scientific and Technical Information of China (English)

    曹丽杰

    2016-01-01

    Falls and fall-related injuries are common in the eldly. Their life and health may be significantly affected, even though they hurt slightly. Fall prediction system of the eldly can detect impending falls in their descending phase before the body hits the ground, which is imple-mented by classifying the activity through the accelerometer of the body,then the system can prevent the fall or do something to reduce the severity of injuries. Fall prediction is of great significance. Investigates the status of fall prediction system and discusses the possible work on the future.%老年人跌倒事件时常发生,老年人即使受到很小的伤害,也可能会对他的生活和健康造成很大影响。跌倒预测系统通过人体姿态分类算法,提前判断老年人跌倒事件,然后通过保护措施阻止老年人跌倒或减少跌倒后的伤害,具有很好的实际意义。对跌倒预测系统国内外研究现状作调查分析,并展望系统未来可能的发展方向。

  8. Dielectric relaxation studies in 5CB nematic liquid crystal at 9 GHz under the influence of external magnetic field using microwave cavity spectrometer

    Indian Academy of Sciences (India)

    Manoj Johri; Abhay Saxena; S Johri; S Saxena; D P Singh

    2011-04-01

    Resonance width, shift in resonance frequency, relaxation time and activation energy of 5CB nematic liquid crystal are measured using microwave cavity technique under the influence of an external magnetic field at 9 GHz and at different temperatures. The dielectric response in liquid crystal at different temperatures and the effects of applied magnetic field on transition temperatures are studied in the present work. The technique needs a small quantity (< 0.001 cm3) of the sample and provides fruitful information about the macroscopic structure of the liquid crystal.

  9. A relativistic mean-field study of magic numbers in light nuclei from neutron to proton drip-lines

    Indian Academy of Sciences (India)

    T K Jha; M S Mehta; S K Patra; B K Raj; Raj K Gupta

    2003-09-01

    In an axially deformed relativistic mean-field calculation of single-particle energy spectra of = 8 (Li–Mg) and = 14, 16 (C–Mg) isotonic chain and the one- and two-neutron separation energies of various isotopes of Li–Mg, new magic numbers are found to exist at = 6 and = 16 and/or = 14, which are in addition to the = 8 and = 20 magic numbers. In neutron-rich nuclei, the shell gap at = 6 is larger than at = 8 and a large gap is observed for = 16 or 14 for the neutron-rich and = 14 for proton-rich nuclei. Large shell gaps are also found to exist at = 14 and 16 or = 16 alone for nuclei near the -stability line. The above results are independent of the parameter sets TM2, NL3 and NL–SH used here. Similarly, new large shell gaps are predicted at = 6, 16 and/or 14 for protons.

  10. Azimuthal cement evaluation with an acoustic phased-arc array transmitter:numerical simulations andfi eld tests

    Institute of Scientific and Technical Information of China (English)

    Che Xiao-Hua; Qiao Wen-Xiao; Ju Xiao-Dong; Wang Rui-Jia

    2016-01-01

    We developed a novel cement evaluation logging tool, named the azimuthally acoustic bond tool (AABT), which uses a phased-arc array transmitter with azimuthal detection capability. We combined numerical simulations andfi eld tests to verify the AABT tool. The numerical simulation results showed that the radiation direction of the subarray corresponding to the maximum amplitude of the first arrival matches the azimuth of the channeling when it is behind the casing. With larger channeling size in the circumferential direction, the amplitude difference of the casing wave at different azimuths becomes more evident. The test results showed that the AABT can accurately locate the casing collars and evaluate the cement bond quality with azimuthal resolution at the casing–cement interface, and can visualize the size, depth, and azimuth of channeling. In the case of good casing–cement bonding, the AABT can further evaluate the cement bond quality at the cement–formation interface with azimuthal resolution by using the amplitude map and the velocity of the formation wave.

  11. Dielectric behaviour of some amides and formamides dissolved in nonpolar solvents under static electric field

    Indian Academy of Sciences (India)

    S Sahoo; S K Sit

    2011-08-01

    Structural and associational aspects of polar amides () like formamide, acetamide, Nmethyl acetamide (NMA), N,N-dimethyl formamide (DMF), N,N-dimethyl acetamide (DMA) and acetanilide dissolved in the nonpolar solvent () benzene or 1,4-dioxan have been estimated from the measured static relative permittivity 0 and high-frequency permittivity ∞ at different weight fractions s of polar solute at 35°C under static electric field using Debye model of polar liquid molecule. The static dipole moments s are compared with s reported from conductivity method and theoretical theos to get exact cal $\\cdot$ theos of the molecules are predicted from the available bond angles and bond moments where difference in electron affinity exists between two adjacent atoms of a polar group due to inductive, mesomeric and electromeric effects in them. Solute–solute molecular association for NMA in benzene and solute–solvent association for other amides are ascertained to arrive at their conformational structures.

  12. Effect of conduction band nonparabolicity on the optical properties in a single quantum well under hydrostatic pressure and electric field

    Indian Academy of Sciences (India)

    S Panda; B Panda

    2012-05-01

    The effect of conduction band nonparabolicity on the linear and nonlinear optical properties such as absorption coefficients, and changes in the refractive index are calculated in the Al0.3Ga0.7As/GaAs heterostructure-based symmetric rectangular quantum well under applied hydrostatic pressure and electric field. The electron envelope functions and energies are calculated in the effective mass equation including the conduction band nonparabolicity. The linear and nonlinear optical properties have been calculated in the density matrix formalism with two-level approximation. The conduction band nonparabolicity shifts the positions of the optical properties and decreases their strength compared to those without this correction. Both the optical properties are enhanced with the applied hydrostatic pressure. While the absorption coefficients are bleached under the combined effect of high pressure and electric field, the bleaching effect is reduced when nonparabolicity is included.

  13. MEMS-based contact stress field measurements at a rough elastomeric layer: local test of Amontons’ friction law in static and steady sliding regimes

    Directory of Open Access Journals (Sweden)

    Debrégeas G.

    2010-06-01

    Full Text Available We present the results of recent friction experiments in which a MEMS-based sensing device is used to measure both the normal and tangential stress fields at the base of a rough elastomer film in frictional contact with smooth, rigid, glass indentors. We consider successively multicontacts under (i static normal loading by a spherical indentor and (ii frictional steady sliding conditions against a cylindrical indentor, for an increasing normal load. In both cases, the measured fields are compared to elastic calculations assuming (i a smooth interface and (ii Amontons’ friction law. In the static case, significant deviations are observed which decrease with increasing load and which vanish when a lubricant is used. In the steady sliding case, Amontons’ law reproduces rather satisfactorily the experiments provided that the normal/tangential coupling at the contact interface is taken into account. We discuss the origin of the difference between the Amontons fields and the measured ones, in particular the effect of the finite normal and tangential compliances of the multicontact interface.

  14. Role of magnetic shear on the electrostatic current driven ion-cyclotron instability in the presence of parallel electric field

    Indian Academy of Sciences (India)

    Harsha Jalori; A K Gwal

    2001-06-01

    Recent observation and theoretical investigations have led to the significance of electrostatic ion cyclotron (EIC) waves in the electrodynamics of acceleration process. The instability is one of the fundamental of a current carrying magnetized plasma. The EIC instability has the lowest threshold current among the current driven instabilities. On the basis of local analysis where inhomogeneities like the magnetic shear and the finite width current channel, have been ignored which is prevalent in the magnetospheric environment. On the basis of non-local analysis interesting modification has been incorporated by the inclusion of magnetic shear. In this paper we provide an analytical approach for the non-local treatment of current driven electrostatic waves in presence of parallel electric field. The growth rate is significantly influenced by the field aligned electron drift. The presence of electric field enhances the growth of EIC waves while magnetic shear stabilizes the system.

  15. Surface critical magnetic field c3() of a bulk superconductor MgB2 using two-band Ginzburg–Landau theory

    Indian Academy of Sciences (India)

    I N Askerzade

    2003-09-01

    Two-band Ginzburg–Landau (TB G–L) equations for a bulk MgB2 were solved analytically to determine the temperature dependence of surface critical magnetic field Hc3(). It is shown that c3() has the same temperature dependence with c2(), similar to the case of a single-band superconductor, c3()=1.66 c2(). We use an elimination procedure for the decoupling of G–L equations of two-band superconductivity, which eases the calculations. It is expected that the temperature dependence for c3() gives positive curvature near c.

  16. Resonant spin-flavor precession constraints on the neutrino parameters and the twisting structure of the solar magnetic fields from the solar neutrino data

    Indian Academy of Sciences (India)

    S Dev; Jyoti Dhar Sharma; U C Pandey; S P Sud; B C Chauhan

    2003-07-01

    Resonant spin-flavor precession (RSFP) scenario with twisting solar magnetic fields has been confronted with the solar neutrino data from various ongoing experiments. The anticorrelation apparent in the Homestake solar neutrino data has been taken seriously to constrain ( 2,') parameter space and the twisting profiles of the magnetic field in the convective zone of the Sun. The twisting profiles, thus derived, have been used to calculate the variation of the neutrino detection rates with the solar magnetic activity for the Homestake, Super-Kamiokande and the gallium experiments. It is found that the presence of twisting reduces the degree of anticorrelation in all the solar neutrino experiments. However, the anticorrelation in the Homestake experiment is expected to be more pronounced in this scenario. Moreover, the anticorrelation of the solar neutrino flux emerging from the southern solar hemisphere is expected to be stronger than that for the neutrinos emerging from the northern solar hemispheres.

  17. Analysis the outcome of proximal humeral fracture in eld treated with locking plates%锁定钢板治疗老年肱骨近端骨折

    Institute of Scientific and Technical Information of China (English)

    张虎; 张凯宁; 任延军

    2011-01-01

    ObjectiveTo observe the clinical effect of proximal humeral fracture in eld treated with locking plates. Method From March 2007 to September 2009, 34 patients with proximal humeral fracture were all treated with locking plates.The average age of patients was 69.5 years(range 60~81).According to Neer classification :2 parts fracture 9cases, 3 parts fracture 19cases, 4 parts fracture 6 cases. Result All patients were all followed up for 8~ 18 months(average 9 months), all fractures occurred bone union, the average time for fracture healing was 3~5 months.The shoulder joint function was evaluated by Neer functional assessment system:excellent 25 cases, good 9 cases. Conclusion Locking plate in treating proximal humeral fracture in eld can obtain satisfactic result and is a good method internal fixation of proximal humeral fracture in eld at present.%目的 探讨应用肱骨近端锁定钢板治疗老年人肱骨近端骨折的疗效.方法 2007年3月~2009年9月使用肱骨近端锁定钢板治疗肱骨近端骨折34例,年龄60~81岁,平均69.5岁.骨折按Neer分型:2部分骨折9例、3部分骨折19例、4部分骨折6例.结果 34例均获随访,随访8~18个月,平均(7.5+1.5)个月.均获骨性愈合,平均愈合时间3~5月.肩关节功能按Neer疗效评分系统评定,优25例、良9例.结论 锁定加压钢板治疗老年人骨折疗效满意,是目前治疗肱骨近端骨折较理想的内固定方法.同时重视肩袖损伤的修复,术后能早期进行功能锻炼,功能恢复良好.

  18. Relative efficiencies of the Burkard 7-Day, Rotorod and Burkard Personal samplers for Poaceae and Urticaceae pollen under field conditions

    DEFF Research Database (Denmark)

    Peel, Robert George; Kennedy, Roy; Smith, Matt;

    2014-01-01

    Trap, the Sampling Technologies Rotorod Model 20 and the Burkard Personal Volumetric Air Sampler were evaluated for Urticaceae and Poaceae pollen under field conditions, and the influence of wind speed and relative humidity on these efficiency relationships was assessed. Data for the two pollen taxa were...... to only have a significant impact on inter-sampler relationships involving the vertically orientated Burkard Personal sampler, whilst no interaction between relative efficiency and relative humidity was observed. Conclusions: Data collected with the three models of sampler should only be compared once......Introduction: In aerobiological studies it is often necessary to compare concentration data recorded with different models of sampling instrument. Sampler efficiency typically varies from device to device, and depends on the target aerosol and local atmospheric conditions. To account...

  19. Asymptotic stability of linearly evolving non-stationary modes in a uniform hydromagnetic field over a rotating-disk flow with suction and injection

    Indian Academy of Sciences (India)

    M Turkyilmazoglu

    2009-12-01

    In this paper the linear stability properties of the magnetohydro-dynamic flow of an incompressible, viscous and electrically conducting fluid are investigated for the boundary-layer due to an infinite permeable rotating-disk. The fluid is subjected to an external magnetic field perpendicular to the disk. The interest lies also in finding out the effects of uniform suction or injection. In place of the traditional linear stability method, a theoretical approach is adopted here based on the high-Reynolds-number triple-deck theory. It is demonstrated that the nonstationary perturbations evolve in accordance with an eigenrelation analytically obtained.

  20. Gemlik Zeytin Çeşidinden Elde Edilen Natürel Zeytinyağında Fenol Bileşiklerinin ve Antioksidan Kapasitenin Belirlenmesi

    OpenAIRE

    Kelebek, Haşim; Kesen, Songül; Selli, Çiğdem Sabbağ Serkan

    2012-01-01

    Bu çalışmada, Gemlik zeytin çeşidinden elde edilen zeytinyağının fenol bileşikleri içerikleri ve antioksidan kapasiteleri incelenmiştir. Fenol bileşiklerinin analizleri zıt fazlı, diyot array detektörlü HPLC-MS cihazıyla ve tanımlamaları ise sıvı kromatografisi-kütle spektrometrisi (LC-MS) ile gerçekleştirilmiştir. Araştırmada, hidroksitirozol, 4-hidroksibenzoik asit, tirozol, 2,3-dihidroksibenzoik asit,  kafeik asit, vanilik asit, vanilin, sirinjik asit, p-kumarik asit, ferulik asit, sinamik...

  1. Hindiba (Cichorium intybus L. Bitkisinden Myrosinaz Enziminin Saflaştırılması, Karakterize Edilmesi ve Kozmetik Alanında Kullanılabilirliğinin İncelenmesi

    Directory of Open Access Journals (Sweden)

    Nazan DEMİR

    2014-07-01

    Full Text Available Myrosinaz glukosinolatların hidrolizinden sorumlu bir enzimdir (E.C: 3.2.3.2 β-thioglucosidase, β-thioglucoside glucohydrolase olarak da bilinir. Kanserle mücadele için umut verici bileşikler olarak kabul edilen sinigrin, glukoraphanin (GRA ve glukoraphenin (GRE gibi ara yıkım ürünlerinden dolayı bazı alifatik glukosinolatlar oldukça ilgi çekmiş ve myrosinaz enziminin bu tümör küçültücü etkisi son yıllarda önem kazanmıştır. Bu çalışmada, myrosinaz amonyum sülfat çöktürmesi, Q-sepharose, Konkanavalin A sepharose afinite kromatografisi ile Hindiba'dan (Cichorium intybus'un L. homojen olarak saflaştırıldı. Saflaştırılan protein SDS- poliakrilamid jel elektroforezinde 35 kDa ağırlığında tek bir bant olarak gözlenmiştir. Enzim pH 8,0'de ve 70 °C' de maksimum aktivite göstermiştir. Saflaştırılmış enzim 1 yıldan fazla süreyle 4° C de sabit kalmıştır. Substrat olarak sinigrin kullanılarak, saflaştırılmış enzim için KM ve Vmax değerleri sırasıyla 0,02 ve 0,074 μmol glukoz. min–1.mg–1 olarak belirlenmiştir. Enzim askorbik asit (AA, EDTA, SDS ve β-merkaptoethanol tarafından güçlü bir şekilde aktive edilmiştir. Buna ek olarak, bazı iyonların myrosinaz enzim aktivitesi üzerine 10, 1 ve 0,1 mM'lık konsantrasyonlardaki etkileri (Cu2+, Ni2+, Ca2+ incelenmiş ve enzim aktivitesini önemli ölçüde etkiledikleri belirlenmiştir. Hindiba (Cichorium intybus'un L.'dan elde edilen myrosinaz enziminin kozmetikte kullanılabilirliliği araştırılmıştır. Çalışmada saf myrosinaz enzimi içeren krem oluşturulmuş ve karışım güneş lekesi ve benzeri cilt sorunları olan 10 gönüllü denek üzerinde 20 gün süreyle uygulanmıştır. Belirlenen gün sonunda deneklerde mevcut olan lekelerin şiddetinde kısmi azalmalar gözlenmiştir.

  2. 海南坡鹿栖息地的外来植物调查%Field Survey of Alien Plants in Habitats of Hainan Eld's Deer ( Cervus eldi hainanus )

    Institute of Scientific and Technical Information of China (English)

    符明利; 吴琳琳; 侯荣; 林思亮

    2012-01-01

    Hainan Eld's deer ( Cervus eldi hainanus ) is a national - level protected species and endemic to China. The stability and development of Eld's deer habitats play a significant role in population growth. Alien invasive plants can affect habitats ir- reversibly over long time periods. We surveyed the alien plants in Hainan Datian National Nature Reserve, where Hainan Eld's deer occur, using line transects and quadrats from 2009 to 2011. We recorded 115 alien plant species of 40 families and 95 genera. Among these, 80 herbs accounted for 70% and most are tropical species, 50% were introduced from the Americas and were mainly distributed in grasslands. The widely distributed alien plants impact the abundance and distribution of native spe- cies and may have a negative effect on Eld's deer food resource in future. We make several recommendations for effective man- agement and conservation. Our survey results can provide a basis for maintaining the stability of Hainan Eld's deer habitat.%海南坡鹿是中国特有的国家Ⅰ级重点保护野生动物,其栖息地的稳定和发展对该物种种群有重要意义。潜在的外来入侵植物会对栖息地产生长期不可恢复的影响。因此,我们于2009—2011年采用样方调查和线路调查相结合的方法对海南坡鹿的栖息地海南大田国家级自然保护区内的外来植物进行了调查,共记录外来植物40科95属115种。其中,草本植物80种,占总物种数的69.6%;不论从科区系还是属区系上看,外来植物的区系分布都具有热带性;50.4%的外来植物产自美洲,在草地中分布最多。保护区内分布广泛的外来植物已对乡土物种产生一定的影响,也将可能对坡鹿的食物资源产生不利影响。根据调查结果,我们提出了一些保护管理建议。

  3. The Eldly Women--the Group Cannot be Neglected in Chinese Strategic for Dealing with Population Aging%老年妇女--国家应对人口老龄化战略不可忽视的群体

    Institute of Scientific and Technical Information of China (English)

    全国妇联妇女研究所老年妇女问题研究课题组

    2015-01-01

    人口老龄化的女性化趋势及老年问题的女性化,使得老年妇女成为老龄相关问题研究和政策设计不可忽视的重要群体。中国的老年妇女问题既与其他国家的老年妇女问题有很多共性,也带有中国特色社会经济文化的深刻烙印。对“老年妇女问题研究”课题的研究视角、主要发现及政策建议作了概要性介绍,希望能引发和启迪更多的专家学者对老年妇女的相关问题展开更为深入的研究分析,为进一步完善和发展具有社会性别视角的中国老龄政策做出贡献。%The eldly women have become a very important group in old age related studies and policy design at present. Compared with the eldly women in other countries, the Chinese eldly women have something in common with them, but have deep imprint about social economy and culture with Chinese characteristics. The sub-topic “eldly women studies” is set up under the project of “Chinese Strategic for Dealing with Population Aging”. It shows that Chinese government keeps the promise of bring the social gender into relevant elderly policies. The paper tells the research angle, main ifndings and relevant policies of this topic brielfy. The authors hope that it can inspire more researchers to make some deeper research and analysis about old female issues, and hope it can make a contribution to develop and perfect the Chinese elderly policies from gender perspective.

  4. From research to field action: example of the fight against cholera in the Democratic Republic of Congo

    Directory of Open Access Journals (Sweden)

    R. Piarroux

    2010-09-01

    Full Text Available The Democratic Republic of Congo (DRC is the country in the world which reported the highest number of cholera cases to WHO from 2002 to 2007 (128 936 cases out of a worldwide 902 071 cases. We, therefore, implemented research work which intends to understand the epidemiology of cholera in the DRC and to ensure improvements in the strategy to fight against cholera. This broad study enabled us to accurately determine the cholera epidemic’s mechanisms on different scales; to identify the source zones of the disease, and the groups of populations acting as vectors of the spread. It was then possible to demonstrate the role of “sanctuary”, played by some suburbs of lakeside cities. A collaborative network, including several scientific institutions in Europe and in the DRC, local and national government administrations in the field of public health and sanitation, international agencies, NGOs and private foundations, was progressively set up. Following the conclusions of our epidemiological studies, a drastic change of strategy was proposed: the limited curative approach on the one hand, the few existing water/sanitation programs on the other hand, have been merged in a global approach involving a larger scale water and sanitation infrastructure improvement, environmental protection, hygiene awareness and medical surveys targeting a few focus areas playing a central role in the epidemics. In conclusion, by better targeting intervention zones, one can gather human and technical resources previously scattered on the vast territory of the DRC. The strategy presented here revives the hope to eliminate cholera in the DRC.La République Démocratique du Congo (RDC est le pays qui a déclaré le plus grand nombre de cas de choléra à l’OMS entre 2002 et 2007 (128 936 cas sur un nombre total de 902 071 de cas dans le monde. Face à cette situation, nous avons mis en œuvre un travail de recherche qui vise à comprendre l’épidémiologie du

  5. Öküzgözü ve Boğazkere Üzümlerinden Elde Edilen Şaraplardaki Fenol Bileşikleri Üzerine Cibre Fermentasyonu Süresinin Etkisi

    OpenAIRE

    Deryaoğlu, Ahmet; Colin, Jean Luc; CANBAŞ, Ahmet

    1997-01-01

    Bu çalışmada, Elazığ yöresinde yetiştirilen şaraplık siyah Öküzgözü ve Boğazkere üzümlerinden elde edilen şaraplardaki fenol bileşikleri üzerine cibre fermentasyonu süresinin etkisi incelenmiştir. Şaraplarda fenol bileşikleri ile ilgili olarak, toplam fenol bileşikleri (gallik asit cinsinden), D280 indisi, antosiyan, renk yoğunluğu ve renk tonu analizleri yapılmıştır. Analiz sonuçlarına göre, cibre fermentasyonu süresi arttıkça, şaraplarda toplam fenol bileşikleri ve antosiyan miktarları artm...

  6. The Early Diagnostic Value of Serum Procalcitonin in Eldely Patients with Severe Pneumonia%降钙素原对老年性重症肺炎早期诊断的价值

    Institute of Scientific and Technical Information of China (English)

    高萌萌; 崔丽

    2014-01-01

    目的评价血清降钙素原(procalcitonin,PCT)对老年性重症肺炎早期诊断的价值及临床意义。方法入院24 h内抽取30例老年性重症肺炎患者及30例轻症老年肺炎患者血液,检测PCT、C反应蛋白、白细胞计数、血沉,并对比。结果 PCT与其他指标相比,具有较高的灵敏性及特异性。结论 PCT对肺炎的诊断有一定的价值,对老年性重症肺炎早期诊断及病情评估价值更大,与肺炎的严重程度具有相关性。%Objective To investigate the early diagnostic value and clinical significanca of serum procalcitonin in eldely patients with severe pneumonia. Methods Drawed blood from 30 eldely patients with severe pneumonia and mild pneumonia respectively within 24h admission,simultaneously determined and compared procalcitonin,c-reactive protein levels,white blood cellcount,erythrocyte-sedimentation rate. Results Compared with other index, the procalcitonin has high sensitivity and specificity. Conclusion The procalcitonin has diagnosis value to roentgenodiagnosis of pneumonia.It has great value in diagnosis early and estimation prognosis diagnosis,and has positive correlation with the disease severity.

  7. 芬太尼贴剂治疗38例老年肺癌中重度疼痛的疗效观察%Clinical observation of effect of transdermal fentanyl in eldly lung cancer patients with cancer pain

    Institute of Scientific and Technical Information of China (English)

    冼海兵; 冯卫能; 张华; 梁剑苗; 邓燕明

    2012-01-01

    目的:探讨使用芬太尼透皮贴剂治疗老年肺癌患者中重度癌痛的有效性及安全性.方法:38例伴有中重度疼痛的晚期老年肺癌患者,给予芬太尼贴剂,初始剂量为25 μg· h-1.观察治疗前后疼痛强度、生活质量评分和药物不良反应.结果:总有效率92.1%,其中完全缓解10例(26.3%),部分缓解25例(65.8%),轻度缓解2例(7.9%).不良反应有恶心、便秘、头昏和呕吐等.没有发生严重肝肾功能损害及呼吸抑制.所有患者的生活质量均明显提高.结论:芬太尼贴剂能有效缓解老年肺癌患者中重度癌痛,不良反应轻,使用安全方便,并能改善患者的生活质量,可作为老年患者中重度癌痛治疗的首选.%Objective: To evaluate the therapeutic efficacy and safety of the transdermal fentanyl patches in eldly lung cancer patients with moderate 01 severe cancer pain. Methods; Thirty-eight lung-cancer patients at the age of over 65 years, with moderate or severe cancer pain, were treated with transdermal fentanyl patches. Initial dose was 2.5 μg? h-1 . The degree of pain remission, quality of life and side effects were recorded. Results; The effective rate was 92. 1% , with 10 case (26. 3% ) of complete response, 25 case (65. 8% ) of partial response and 2 case (7.9% ) of minor response. The common adverse reaction were nausea, constipation, dizzy and vomiting. The quality of life for all patients was improved greatly. No severe hepatic and renal dysfunction or aspiratory depression was observed. Conclusion; Transdermal fentanyl is effective, safe, and convenient for eldly lung cancer patients with cancer pain and can improve the quanlity of life, so it can be recommended as a first-line drug for the treatment of moderate or severe cancer pain in elderly patients.

  8. Analysis on nocturia in the non-eldly male patients after successful renal transplantation%非老年男性肾移植患者术后夜尿情况分析

    Institute of Scientific and Technical Information of China (English)

    张鹏; 郝俊文; 俞能旺; 李香铁; 张爱民

    2014-01-01

    Objective To investigate the nocturia and its impact on the quality of life in the non-eldly male patients after successful renal transplantation and to explore the related risk factors and causes which led to nocturia. Methods We designed a patient-completed questionnaire according to the characteristics of clinical records,international prostate symptom score(IPSS)and quality of life score. We distributed the questionnaires and instructed them to fill in the meetingspot of kidney transplant friends. Results A total of 182 questionnaires were distributed and 120 were collected,only 90 cases meet the requirements of the study. The prevalence of nocturia(awakening at night twice or more to void)were 61 cases(67.8%). Seventy-six cases(84.4%)of all patients were satisfied with the quality of life after renal transplantation. There was no statistically correlation between urine output before transplantation(24 hours),the total time of hemodialysis before operation,24 hours fluid intake now,the total time after operation and nocturia(all P>0.05). Conclusions Nocturia was very prevalent in the non-eldly male patients after successful renal transplantation. This research demonstrated that nocturia may be caused by many risk factors interactions and did not bring an obvious adverse impact on the quality of life after successful renal transplantation.%目的:调查成功肾移植术后非老年男性受者的夜尿情况及生活质量,并探讨引起夜尿症的相关危险因素及原因。方法采用自我完成的问卷调查,内容包括肾移植手术前后主要临床记录特征、国际前列腺症状评分表(IPSS)以及生活质量评分表。在本院举办肾友会时,现场发放调查问卷并指导填写。结果调查问卷共发出182份,回收120份,90份符合此次研究的条件。90例患者中,61例(67.8%)出现夜间排尿次数≥2次,76例(84.4%)对目前的生活质量表示满意。肾移植术前尿量、

  9. Türk Edebiyatının Klasik Eserlerinin Günümüz Televizyon İzleyicisine Sunumu ve İzleyici Algısının Analiz Edilmesi The Presentation Of The Canonical Texts In Turkish Literature To The Contemporary Tv Audience And The Analysis Of The Audience Perception

    Directory of Open Access Journals (Sweden)

    Murat KORKMAZ

    2013-07-01

    ç edebi eser “ROMAN” ele alınmıştır. Bunlar; Aşk-ı Memnu, Hamının Çiftliği ve Yaprak Dökümü’dür. Bu üç eser hakkında öncelikli olarak literatür değerlendirmesi gerçekleştirilmiştir. Daha sonra ise bu eserlerin televizyona yansıması değerlendirilerek, eserler hakkında televizyon izleyicisinin düşünceleri ele alınmıştır. Araştırmada kullanılan anket iki farklı bölümden oluşmaktadır. Birinci bölümde katılımcıların demografik özelliklerinin belirlenmesine yönelik sorular,ikinci bölümde ise 5’li likert ölçekten oluşan sorular yer almaktadır.Araştırmanın evrenini İstanbul, Ankara gibi iki büyük ilde yaşayanizleyici kitlesi oluşturmaktadır. Araştırmaya (N=300 kadın ve erkekkatılım gerçekleştirmiştir. Anket verileri SPSS 20 istatistik programı ileanaliz edilmiştir. Araştırmadan elde edilen veriler öncelikli olarakgüvenirlilik analizine tabi tutulmuş ve Cronbach’s Alfa kat sayısı olarak0.920 değeri elde edilmiştir. Bu değer çalışmanın oldukça güvenilirolduğunu göstermektedir. Yine veriler farklı analiz yöntemlerikullanılarak analiz edilmiş ve sonuç olarak katılımcıların eserlerinorijinal halleri ile televizyonda gösterilen halleri arasında ciddi bir farkolduğuna işaret ettiği saptanmıştır.

  10. 社区老老年人群痴呆患病率及其影响因素研究%Prevalence of Dementia among the Eldly and Its Influential Factors

    Institute of Scientific and Technical Information of China (English)

    于焰; 张娜; 董佳梅; 娄毅; 肖卫忠

    2012-01-01

    Objective To investage the cognitive function of the eldly in an urban community in Beijing and explore its risk factors. Methods Totally 129 elderly individuals aged 80 years or above in Dayou Beili, an urban community in Beijing, were enrolled in this study. Initially, the subjects were evaluated by Mini Mental State Examination ( MMSE ) and Montreal Cognitive Assessment ( MoCA ). Subjects with an MMSE score ≤24 or MoCA ≤15 were further screened by Activity of Daily Living Scale ( ADL ) and diagnosed as vascular dementia or Parkinson disease with dementia according to DSM - Ⅳ and NINDS -AIREN. Results The average MoCA score of these 129 subjects was 22. 82, and the average MMSE score was 26. 45. Twelve subjects were newly diagnosed as dementia, with a morbidity of 9. 3% . Another 12 subjects had a past history of dementia. Aging and drinking were the independent risk factors for senile dementia, while high educational degree was a protective factor. The morbidity of dementia in the patients suffered from atrial fibrillation, alcohol addiction, Parkinson's disease, smoking, stroke, coronary heart disease, diabetes mellitus, hypertension, and dyslipidemia was 36. 84% (7/19), 30.77% (8/26), 28.57% (2/7), 22.22% (12/54), 20.00% (15/75), 19.57% (9/46), 16.22.00% (6/37), 15.09% (16/106), 14.04% ( 8/57 ), respectively. Conclusion The cognitive function of the eldly in Dayou Beili community is in relatively good shape. Meanwhile, it is important to prevent senile dementia through smoking cessation, stopping harmful alcohol use and adopting early treatment for patients with cardiac cerebral vascular diseases and Parkinson's disease.%目的 调查北京市海淀区大有北里社区老老年人群的痴呆患病率及其危险因素,为防治老年痴呆提供依据.方法 纳入大有北里社区129例年龄≥80岁的离退休人员,用简易智能状态量表(MMSE)、蒙特利尔认知量表(MoCA)进行认知功能障碍筛查.文盲MMSE评分≤17

  11. Süt Fabrikası Atık Sularından İzole Edilen Mikroorganizmalardan Elde Edilen Biyosürfektanların Bitki Patojeni Fusarium Türleri Üzerine Antifungal Etkilerinin Araştırılması

    Directory of Open Access Journals (Sweden)

    Fadime YILMAZ

    2014-02-01

    Full Text Available Bu çalışmada süt fabrikası atık sularından izole edilen farklı mikroorganizmalardan biyosürfektanlar elde edilmiş ve bu maddelerin antifungal aktiviteleri test edilmiştir. Bu amaçla Ankara Atatürk Orman Çiftliği Süt ve Süt Mamulleri Fabrikası atık su örneklerinden beş farklı mikroorganizma izole edilmiştir. Sadece üç izolatın biyosürfektan ürettiği belirlenmiştir. Biyosürfektan üreten izolatlar, identifikasyon testleri sonucunda Yarrowia lipolytica, Micrococcus luteus ve Burkholderia cepacia olarak tanımlanmışlardır. Y. lipolytica, M. luteus ve B. cepacia'dan üretilen ve sırasıyla BS-I, BS-II ve BS-III olarak kodlanmıştır. Elde edilen biyosürfektanların, bitki patojeni olan Fusarim cinsine ait Fusarium avenaceum ATCC 200466, Fusarium graminearum ATCC 15624, Fusarium inflexum ATCC 32211 ve Fusarium heterosporium ATCC 15625 türleri üzerine antifungal etkileri tespit edilmiştir. Tüm biyosürfektanların denenen funguslara karşı farklı antifungal aktivite sergiledikleri saptanmıştır. BS-III'ün en yüksek ve düşük misel inhibisyon oranları sırasıyla, % 71 oranında F. graminearum' da ve % 39 oranında F. heterosporium'da belirlenmiştir. Anahtar kelimeler: Süt Fabrikası Atık Suları, Biyosürfektan, Antifungal Etki, Fusarium

  12. Effects of psychological intervention on the mental health and coping style of perinatal eld gravida and puerpera%心理干预对围产期高龄孕产妇心理健康及应对方式的影响

    Institute of Scientific and Technical Information of China (English)

    邝云航; 赵莉; 张健平

    2009-01-01

    目的 探讨心理干预对围产期高龄孕产妇心理健康状况及应对方式的影响. 方法 将围产期高龄孕妇随机分为干预组141例和对照组145例,两组均进行常规的产前教育,干预组施以心理干预.观察时间为孕28 w~产后1 w.于心理干预前后(孕28 w及产后1 w)采用症状自评量表及应对方式问卷进行评定分析. 结果 心理干预后,干预组人际关系敏感、焦虑、强迫、抑郁、敌对分较干预前显著降低(P<0.05或0.01);其解决问题、求助等积极应对因子分较干预前显著提高(P<0.05),而自责、幻想、退避等消极应对因子分较干预前显著性降低(P<0.05).对照组仅抑郁因子和幻想因子得分有显著性变化(P<0.05). 结论 心理干预有助于提高围产期高龄孕产妇的心理健康水平和改善应对方式.%Objective To explore the effects of psychological intervention on the mental health and coping style of perinatal eld gravida and puerpera. Methods Perinatal eld gravida and puerpera were randomly divided into intervention(n=141) and control group(n=145), assessments and control study were conducted with the Symptom Checklist-90(SCL-90) and Coping Style Questionnaire(CSQ) before and after intervention(week 28 of pregnancy and 1 week after childbirth). Results After intervention, the score of interpersonal relation sensitiveness,anxiety,coercion,depression and hostility were significantly lower compared with pre-intervention in the intervention group(P<0.05 or 0.01); their active coping factors such as problem solving and help score were significantly higher(P<0.05) and inactive factors as self-reproach, illusion and avoidance lower(P<0.05). In control group, depression and illusion score had obvious changes only(P<0.05). Conclusion Psychological intervention is helpful to improving mental health level and coping style for perinatal eld gravida and puerpera.

  13. 沐舒坦雾化吸入治疗老年慢性支气管炎急性发作临床观察%Clinical observation of mucosolvan atomizing inhalation in the treatment of acute exacerbations of chronic bronchitis in eldly patients

    Institute of Scientific and Technical Information of China (English)

    孟蕾; 朱剑

    2015-01-01

    目的:观察沐舒坦雾化吸入治疗老年慢性支气管炎急性发作患者的临床疗效。方法:收治老年慢性支气管炎急性发作患者106例,分为雾化吸入组和静脉滴注组,雾化吸入组给予沐舒坦雾化吸入治疗,静脉滴注组给予沐舒坦静脉滴注治疗,比较两组疗效。结果:雾化吸入组的临床治疗总有效率明显高于静脉滴注组,咳嗽缓解时间、喘息缓解时间明显早于静脉滴注组,住院时间明显短于静脉滴注组(P<0.05)。结论:沐舒坦雾化吸入治疗老年慢性支气管炎急性发作患者起效更快,临床治疗效果更确切。%Objective:To explore the clinical effect of mucosolvan aerosol inhalation in the treatment of acute exacerbations of chronic bronchitis in eldly patients.Methods:106 elderly patients with acute exacerbation of chronic bronchitis patients were selected.They were divided into the atomizing inhalation group and intravenous infusion group.The atomizing inhalation group was given mucosolvan aerosol inhalation.The intravenous infusion group was given ambroxol intravenous drip treatment.We compared the efficacy of two groups.Results:In the atomizing inhalation group,the total efficiency of clinical treatment was significantly higher than that of intravenous infusion group;the remission time of cough,the remission time of breathing were significantly earlier than the intravenous infusion group;the hospitalization time was significantly shorter than the intravenous infusion group(P<0.05).Conclusion:The onset of mucosolvan aerosol inhalation in the treatment of acute exacerbations of chronic bronchitis in eldly patients was faster.Clinical therapeutic effect was more precise.

  14. Cibre Fermantasyonu Süresinin Öküzgözü ve Boğazkere Üzümlerinden Karıştırılarak Elde Edilen Şarapların Fenol Bileşikleri ve Kalitesi Üzerine Etkisi

    OpenAIRE

    Cabaroğlu, Turgut; ERTEN, Hüseyin; Ünal, M. Ümit; Bozdoğan, Adnan

    2006-01-01

    Farklı oranlarda karıştırılan Öküzgözü ve Boğazkere üzümlerinden kırmızı şarap üretimi sırasında, uygulanan cibre fermantasyonu süresinin, şaraptaki fenol bileşikleri ve şarap kalitesi üzerine etkisi araştırılmıştır. Öküzgözü ve Boğazkere üzümleri (1:1) ve (2:1) oranlarında karıştırılmıştır. Her karışım 3 eşit kısma ayrılmış ve sabit sıcaklıkta (25 °C) 3, 5 ve 7 gün cibre fermantasyonu uygulanarak şaraba işlenmiştir. Elde edilen şaraplar üzerinde genel analizler, fenol bileşikleri analizleri ...

  15. Fing Art fair (c)eld in september

    Institute of Scientific and Technical Information of China (English)

    Guo Yan

    2011-01-01

    The Art Beijing 2011 · Fine Art Fair was held at the National Agricultural Exhibition Center in Beijing from September 15 to 18,2011.Bringing together over 40 galleries and art institutions,this year's Fine Art Beijing offers a strong lineup.It presented an extraordinary exhibition of both classical and modem art from West and East.Compared with previous fairs,the exhibits at the Fine Art Beijing 2011 are richer in form and more diversified in style.Attending the fair,you would be able to travel from the ancient pastto the contemporary art world,enjoying classical Western paintings,modem Chinese paintings,modem and contemporary oil paintings,Japanese paintings,and Russian oil paintings,all of which havehad an enormous impact on contemporary Chinese art.

  16. Hisse Senedi Piyasasında Teknik Analiz Yönteminin Güvenilirliğinin Test Edilmesi

    OpenAIRE

    Akça, Önder

    2005-01-01

    Çalışmada teknik analiz yöntemiyle hisse senedi getirilerinin analizi teorik olarak incelenmiş ve konular İMKB uygulamaları ile açıklanmaya çalışılmıştır. Teknik analizin tanımı,doğuşu, tarihsel gelişimi, temel prensipleri ve varsayımları açıklanmıştır. Teknik analiz yönteminde kullanımı, anlaşılabilirliği kolay, en çok kullanılan ve bilinen teknik analiz araç ve yöntemleri açıklanmış, İMKB uygulamaları ile konu incelenmiştir. Çalışmada farklı yöntemler ve uygulamalar ile oluşturulan sisteml...

  17. Dolgu Maddelerinin Dentin ve Pulpa Dokularına Etkilerinin İncelenmesinde Dikkat Edilmesi Gereken Esaslar

    OpenAIRE

    ÜÇOK, Mete

    2013-01-01

    ÖZETBu makalede, bir dolgu maddesinin dentin ve pulpaya etkilerinin incelenmesinde etkili olabilecek faktörler üzerinde duruldu. Bu faktörler incelenen hastaların yaşı, inceleme yapılan dişlerin durumu, kavitelerin açılma şekli ve özellikleri, kavite tabanı ile pulpa arasında kalan dentin kalınlığı, dolgu maddesinin seçimi ve uygulanması, inceleme süresi ve histolojik kesitlerin alınmasıdır. Sonuç olarak bu faktörlerin etkilerinin en alt düzeye indirilmesi halinde, gerçeğe en uygun bulguların...

  18. The validity and reliability of motivational factors scale and the benefits scale of participating in trekking activities for Turkish populationBireyleri doğa yürüyüşü yapmaya motive eden faktörler ölçeği ve bu faaliyetlere katılarak elde edilen faydalar ölçeğinin Türk popülasyonu için geçerlilik güvenirlilik çalışması

    Directory of Open Access Journals (Sweden)

    Faik Ardahan

    2013-09-01

    Full Text Available There are two main aims of this study; first; define the validity and reliability of “the Motivational Factors Scale for participating in recreational Trekking activities -MFST”; and “the Benefits Scale of participating in Trekking activities - BST”; second; find out the impacts of MFST on BST.As a result, the Motivational Factors Scale for participating recreational Trekking activities, the Benefits Scale of participating in Trekking activities were reliable and valid in the estimation of the motivational factors and benefits of participating in trekking for the Turkish population. ÖzetBu çalışmanın iki temel amacı vardır, ilki; bireyleri “Doğa Yürüyüşü Yapmaya Motive Eden Faktörler Ölçeği-MFST” ve bu faaliyetlere katılarak “Elde Edilen Faydalar Ölçeğinin- BST” Türk popülasyonu için geçerlilik güvenirlilik çalışması yapmak, ikincisi de, MFST ile BST arasındaki ilişkiyi gösterir regresyon modelinin ortaya konulmasıdır. Araştırma tanımlayıcı bir araştırmadır ve bu çalışma sadece doğa yürüyüşçüleri ile sınırlıdır.Araştırma sonucuna göre, MFST’nin bireyi doğa yürüyüşü etkinliklerine motive eden faktörlerin açıklanmasında, BST’nin de bireylerin doğa yürüyüşünden elde ettikleri faydaların açıklanmasında Türk popülasyonu için yeterli oldukları sonucuna varılmıştır.    Neden-Sonuç ilişkisi açısından, Nedenlerin Faydalar üzerine etkileri de araştırmanın temel yapılma gerekçesini açıklamaktadır.

  19. Ürün Kategorileri Arasındaki Satış İlişkisinin Birliktelik Kuralları ve Kümeleme Analizi ile Belirlenmesi ve Perakende Sektöründe Bir Uygulama

    OpenAIRE

    Ergün, Ertuğrul

    2008-01-01

    Günümüzde birçok işletme, müşterileri ile ilgili çok miktarda ve çok çeşitli veriye sahiptir. Bu verilerin çeşitli analiz teknikleriyle işlenerek anlamlı ve işletmenin işine yarayacak bilgilerin elde edilmesi, işletmenin daha etkin kararlar vermesini sağlayacak ve küreselleşen, rekabetin arttığı dünyada işletmenin rekabet etme gücünü arttıracaktır. Veri madenciliği, matematiksel ve istatistiksel teknikler yardımı ile veri seti içindeki gizli bağlantıları tespit ederek, işletmelere karar verme...

  20. Mikrokalorimetrinin Hububat Teknolojisinde Kullanım İmkanları I. Differential Scanning Calorimetry (DSC) ve Yöntemin Genel Karakteristikleri

    OpenAIRE

    Certel, Muharrem; Ertugay, Zeki

    1991-01-01

    Hububat teknolojisinde, özellikle hububat ve ürünlerinden kalite kontrollerinde, basit ve hızlı bir ölçüm tekniği ile elde edilen sonuçların çok yönlülüğü nedeniyle, mikrokalorimetri günden güne artan bir önem arz etmektedir. Differential Scanning Calorimetry (DSC), gıdalardaki karbonhidrat, protein ve yağ komponentlerinin fonksiyonel özelliklerinin karakterize edilmesi ve bunların gıda teknolojisinde, özellikle de gıda işlem mühendisliğinde amaca yönelik olarak kullanımına imkan tanıyacak gü...

  1. Carbon nanotube based field emitters in diode operating mode

    OpenAIRE

    Wenger, Daniela

    2015-01-01

    Im Rahmen des BMBF-Projektes CarboFEM wurde die Feldemission (FE) von Kohlenstoff-Nanoröhrchen (CNTs) und CNT/Graphen-Hybridstrukturen untersucht. Ziel des Projektes war es, eine Röntgenröhre mit einer Feldemitterkathode als Elektronenquelle zu bauen. In der vorliegenden Arbeit werden das Emittermaterial, die Vakuumdiode und die gemessene Feldemission sowie Einflussgrößen darauf beschrieben. Aufgrund ihrer nm-feinen Strukturen wurden CVD-gefertigte CNTs sowie eine lösungsprozessierte Dispersi...

  2. ANALYSIS OF THE DETERMINANTS OF EXPORTING INTENSITY IN THE FI ELD OF INNOVATION

    Directory of Open Access Journals (Sweden)

    Suárez-Porto, Vanessa

    2014-05-01

    Full Text Available From a sample of Spanish manufacturing businesses, extracted from the 2005 Technological InnovationPanel (PITEC 2005, we suggest a lineal regression model in which we relate the exporting intensity withthe product innovation, the process innovation, the sectorial technological intensity, the business extentand the membership to a pool of businesses. In the descriptive and statistical analysis, we obtained thatall of these variables have a positive and significant influence on the exporting intensity. Regarding thismatter, we have checked that the main influence corresponds to businesses that develop product inno-vation strategies, are of medium extent, are assigned to sectors of medium-high technological intensityand belong to a foreign corporate group.

  3. Groundwater Dynamics in Drained Soils of the Biđ-fi eld District

    Directory of Open Access Journals (Sweden)

    Ivan Mustać

    2011-03-01

    Full Text Available The main goal of five-year stationary investigations (2001-2006 was to assess groundwater dynamics in the Biđ-field district, as well as the type of soil moistening of agricultural soils spreading over 5838 ha. Detailed hydropedological investigations were carried out in 2000 and a soil map of the region was produced (scale = 1:10000 using universal kriging. Soil investigations identified six pedosystematic units: alluvial-gley, semigley-pseudogley, eugley hypogley, humogley, eugley amphigley and drained soils. Based on permanent monitoring of piezometer groundwater (piezometer depth up to 4.0 m in the period from 2001 to 2006, the following major soil moistening types and subtypes of the separated soil units were determined: semigley-pseudogely, hypogley, humogley, amphigley and drained. Using the correlation method, more intensive groundwater communication was determined in the studied soil profiles with the River Biđ water (r = 0.65-0.69 than with the River Sava water (r = 0.23-0.69, notably in hypogley soils, which cover 54.3% of the studied area. Analysis of the obtained piezometer water level curves indicated a very strong mutual correlation between the groundwater level dynamics in monitored hydrogeological piezometers of 9 m depth (r = 0.87-0.98, as well as a strong correlation (r = 0.75-0.94 between hydrogeological and hydropedological piezometers of 4 m depth. A particularly strong correlation (r = 0.85-0.94 was recorded between hydrogeological and hydropedological piezometers installed in hypogley soil. These data confirm marked vertical communication of groundwater in the deep aquifer with water of the shallow soil aquifer, indicating that the surface layer of the studied area, mainly made up of silty clay loams to silty clays, is not impervious.

  4. Groundwater Dynamics in Drained Soils of the Biđ-fi eld District

    OpenAIRE

    Ivan Mustać; Dragutin Petošić; Goran Gjetvaj; Vilim Filipović

    2011-01-01

    The main goal of five-year stationary investigations (2001-2006) was to assess groundwater dynamics in the Biđ-field district, as well as the type of soil moistening of agricultural soils spreading over 5838 ha. Detailed hydropedological investigations were carried out in 2000 and a soil map of the region was produced (scale = 1:10000) using universal kriging. Soil investigations identified six pedosystematic units: alluvial-gley, semigley-pseudogley, eugley hypogley, humogley, eugley amphigl...

  5. Quantum field theory of photons with orbital angular momentum

    OpenAIRE

    Fernández Calvo, Gabriel; Picón Álvarez, Antonio; Bagán Capella, Emili

    2006-01-01

    A quantum-field-theory approach is put forward to generalize the concept of classical spatial light beams carrying orbital angular momentum to the single-photon level. This quantization framework is carried out both in the paraxial and nonparaxial regimes. Upon extension to the optical phase space, closed-form expressions are found for a photon Wigner representation describing transformations on the orbital Poincaré sphere of unitarily related families of paraxial spatial modes.

  6. A verification of quantum field theory – measurement of Casimir force

    Indian Academy of Sciences (India)

    Anushree Roy; U Mohideen

    2001-02-01

    Here we review our work on measurement of the Casimir force between a large aluminum coated a sphere and flat plate using an atomic force microscope. The average statistical precision is 1% of the force measured at the closest separation. We have also shown nontrival boundary dependence of the Casimir force.

  7. Edge detection in the potentialfi eld using the correlation coeffi cients of multidirectional standard deviations

    Institute of Scientific and Technical Information of China (English)

    Xu Meng-Long; Yang Chang-Bao; Wu Yan-Gang; Chen Jing-Yi; Huan Heng-Fei

    2015-01-01

    Most edge-detection methods rely on calculating gradient derivatives of the potential field, a process that is easily affected by noise and is therefore of low stability. We propose a new edge-detection method named correlation coeffi cient of multidirectional standard deviations (CCMS) that is solely based on statistics. First, we prove the reliability of the proposed method using a single model and then a combination of models. The proposed method is evaluated by comparing the results with those obtained by other edge-detection methods. The CCMS method offers outstanding recognition, retains the sharpness of details, and has low sensitivity to noise. We also applied the CCMS method to Bouguer anomaly data of a potash deposit in Laos. The applicability of the CCMS method is shown by comparing the inferred tectonic framework to that inferred from remote sensing (RS) data.

  8. Capturing relativistic wake eld structures in plasmas using ultrashort high-energy electrons as a probe

    CERN Document Server

    Zhang, C J; Xu, X L; Li, F; Pai, C -H; Wan, Y; Wu, Y P; Gu, Y Q; Mori, W B; Joshi, C; Lu, W

    2016-01-01

    A new method capable of capturing coherent electric field structures propagating at nearly the speed of light in plasma with a time resolution as small as a few femtoseconds is proposed. This method uses a few femtoseconds long relativistic electron bunch to probe the wake produced in a plasma by an intense laser pulse or an ultra-short relativistic charged particle beam. As the probe bunch traverses the wake, its momentum is modulated by the electric field of the wake, leading to a density variation of the probe after free-space propagation. This variation of probe density produces a snapshot of the wake that can directly give many useful information of the wake structure and its evolution. Furthermore, this snapshot allows detailed mapping of the longitudinal and transverse components of the wakefield. We develop a theoretical model for field reconstruction and verify it using 3-dimensional particle-in-cell (PIC) simulations. This model can accurately reconstruct the wakefield structure in the linear regime...

  9. Synthesis of studies on common ELD storage containers for the MA-VL wastes

    International Nuclear Information System (INIS)

    The aim of this document is to present the results of different studies realized on the common container during long time storage and during the deep underground disposal. These studies are realized in the framework of the 2 and 3 axis of the law on the radioactive wastes management of 1991. The common container is the external envelop collecting many primary wastes packages. The results are presented in eight chapters: the initial data, the main functions of the container, the based options for the sizing, the constitutive concrete, the functional demonstrations, the technological demonstrations, the old packages examinations, the transport analysis. (A.L.B.)

  10. Kırılgan Beşlide Satın Alma Gücü Paritesi (SAGP) Hipotezinin Test Edilmesi

    OpenAIRE

    CEVIS, Ismail; Resat CEYLAN

    2015-01-01

    Due to price stability has been a privileged macro-economic target, the validity of purchasing power parity (PPP) hypothesis attracted more attentions in recent studies. The aim of this study is to examine the validity of purchasing power parity hypothesis for emerging markets (India, Brazil, Indonesia, Turkey, and South Africa) which are called “fragile five” by using the method of co-integration in the the period of 2003:12013:8. Then, the data covers monthly series of nominal exchange rate...

  11. Ekonomik Bir Nükleer İz Kazıma Ünitesinin Üretilmesi ve Performansının Test Edilmesi

    Directory of Open Access Journals (Sweden)

    Vahap KARAKILIÇ

    2014-03-01

    Full Text Available Since the inhalation of radon and radon progenies may cause serious health risks such as increase in the incidence of lung cancer, it is important to determine indoor radon concentrations. In the present study, the performance of the etching unit (track-matic, an automatic bath processing appliance for CR-39 nuclear track detectors that we designed as an alternative to conventional Radobath etching unit, was examined. Indoor radon measurements were performed for a 6-weeks period by using CR-39 detectors, which were placed in 10 measurement points in couples at the Süleyman Demirel University campus. At the end of the measurement period the CR-39 detectors were collected and the counting process of alpha traces (recorded by the detectors were fulfilled in the Health Physics Laboratory of Sarayköy Nuclear Research and Training Center (SANAEM in Ankara. At the stage of making the recorded alpha traces visible, for all the detector couples obtained from the measurement points, the film processing of one detector was performed by using the conventional Radobath etching unit in SANAEM laboratory and the bath process of the other CR-39 detector was performed by our device. Then the results of the analyses were compared to each other. Within the limitations of this study it may be concluded that, the track-matic device that we developed, which is approximately 65 times more economical than the current film processing unit Radobath, can be used for chemical etching process of CR-39 detectors

  12. Coupled Higgs field equation and Hamiltonian amplitude equation: Lie classical approach and (′/)-expansion method

    Indian Academy of Sciences (India)

    Sachin Kumar; K Singh; R K Gupta

    2012-07-01

    In this paper, coupled Higgs field equation are studied using the Lie classical method. Symmetry reductions and exact solutions are reported for Higgs equation and Hamiltonian amplitude equation. We also establish the travelling wave solutions involving parameters of the coupled Higgs equation and Hamiltonian amplitude equation using (′/)-expansion methodc, where = () satisfies a second-order linear ordinary differential equation (ODE). The travelling wave solutions expressed by hyperbolic, trigonometric and the rational functions are obtained.

  13. A case of polypharmacy in the eldly%老年人多重用药1例讨论

    Institute of Scientific and Technical Information of China (English)

    王秋梅; 张波; 刘晓红

    2011-01-01

    @@ 多重用药是指患者同时使用多种药物(通常≥5种药物),一种疾病采用复方用药或混杂给药.这里以一个典型病例,讨论如何进行老年人多重用药的管理. 1病历资料 患者男,87岁,因"意识不清2h"于2009年8月入院.诊治经过:CT提示右侧小脑出血约13mL,第四脑室受压变形.

  14. Effect of VATS Wedge Resection and Mediastinal Lymph Node Sampling 
in Eldly Patients with Early Peripheral Lung Cancer

    Directory of Open Access Journals (Sweden)

    Weihua LOU

    2012-01-01

    Full Text Available Background and objective The treatment for early-stage non-small cell lung cancer is primarily surgical. However, the optimal extent of mediastinal lymph node resection remains to be determined. The aim of the current study is to investigate the effect of a pulmonary wedge resection on aged patients with lung cancer. Methods A total of 15 lung cancer patients aged over 70 years were treated via video-assisted thoracoscopic surgery (VATS wedge resection and mediastinal lymph node sampling from June 2004 to February 2008. Mediastinal lymph node sampling included stations 2R, 4R, 8 and 9 for the right-sided cancers and stations 5, 6, 8 and 9 for the left-sided cancers. Results VATS wedge resection and mediastinal lymph node sampling for aged patients with peripheral lung cancer are minimally invasive treatments with a short operative time and low postoperative morbidity. The 1-year and 3-year survival rates were 100% and 86.6%, respectively. Conclusion VATS wedge resection and mediastinal lymph node sampling can be an alternative treatment for aged patients with early peripheral lung cancer.

  15. Terahertz field enhancement to the MV/cm regime in a tapered parallel plate waveguide

    DEFF Research Database (Denmark)

    Iwaszczuk, Krzysztof; Andryieuski, Andrei; Lavrinenko, Andrei;

    2012-01-01

    We investigate field enhancement properties of a tapered parallel plate waveguide for ultrashort terahertz (THz) pulses. We use two independent methods, air biased coherent detection inside the waveguide and free-space electro-optic sampling, respectively, which enables a calibrated, quantitative...

  16. Halka Açık Olmayan Şirketlerde Sistematik Risk Ölçütü Beta Katsayısının Tahmin Edilmesi(Forecasting Systematic Risk Measure Beta Coefficient For Private Companies)

    OpenAIRE

    Mustafa KIRLI

    2006-01-01

    Systematic risk being insensitive to portfolio diversification affects all financial markets and all financial assets operated in these markets.Systematic risk measure beta coefficient shows the sensitivity of the securities’ returns to variations in the market return.Beta coefficient is forecasted by using regression model.For publicly traded firms, we know the historical market datas,thus there is no difficulty for estimating beta coefficients of these firms.On the other hand,private comp...

  17. Gelişmekte Olan Piyasalarda Finansal Piyasa İstikrarının Kantil Regresyon Yöntemiyle Test Edilmesi = Tests for Financial Market Stability in Emerging Markets by Using Quantile Regression

    OpenAIRE

    Akar, Cüneyt

    2013-01-01

    In this study, the financial market stability is investigated for the emerging market countries of Morgan Stanley Capital International (MSCI), Europe, the Middle East and Africa index by using quantile regression based new empirical test proposed by Baur and Schulze (2009). The daily logarithmic return dataset covers the period of June 1, 2002 to February 17, 2011. The results show that Poland and Morocco exhibit financial market stability among the investigated countries.

  18. Ücret Yapışkanlığı Hipotezi'nin Test Edilmesi: Türkiye'de Asgari Ücret ve Büyüme Üzerine Zaman Serileri Analizi (2005-2012)

    OpenAIRE

    KARGI, Bilal

    2013-01-01

    Classical economics envisaged to reach the subsistence level of wages in the long term. Keynes, however, argued that it would be sticky downward wages with trade union activities. Since the 1930s, governments have begun to phase out the laws of the minimum wage to support employees' income levels. Thus, the minimum wage has emerged as a wage stickiness. Although wages are rising long-term interest rates are still low production continue to receive. Economistic analysis suggests that the wages...

  19. Halka Açık Olmayan Şirketlerde Sistematik Risk Ölçütü Beta Katsayısının Tahmin Edilmesi(Forecasting Systematic Risk Measure Beta Coefficient For Private Companies

    Directory of Open Access Journals (Sweden)

    Mustafa KIRLI

    2006-01-01

    Full Text Available Systematic risk being insensitive to portfolio diversification affects all financial markets and all financial assets operated in these markets.Systematic risk measure beta coefficient shows the sensitivity of the securities’ returns to variations in the market return.Beta coefficient is forecasted by using regression model.For publicly traded firms, we know the historical market datas,thus there is no difficulty for estimating beta coefficients of these firms.On the other hand,private companies do not have a market price history.Consequently there are difficulties for estimating beta coefficients of private companies.In this study,to forecast beta coefficients for private firms,three models or approaches are suggested and with details analysed.These models or approaches are accounting betas,fundamental betas and comparable publicly traded firms betas.

  20. Hindiba (Cichorium intybus L.) Bitkisinden Myrosinaz Enziminin Saflaştırılması, Karakterize Edilmesi ve Kozmetik Alanında Kullanılabilirliğinin İncelenmesi

    OpenAIRE

    DEMİR, Nazan; Esen TAŞGIN

    2014-01-01

    Myrosinaz glukosinolatların hidrolizinden sorumlu bir enzimdir (E.C: 3.2.3.2 β-thioglucosidase, β-thioglucoside glucohydrolase olarak da bilinir). Kanserle mücadele için umut verici bileşikler olarak kabul edilen sinigrin, glukoraphanin (GRA) ve glukoraphenin (GRE) gibi ara yıkım ürünlerinden dolayı bazı alifatik glukosinolatlar oldukça ilgi çekmiş ve myrosinaz enziminin bu tümör küçültücü etkisi son yıllarda önem kazanmıştır. Bu çalışmada, myrosinaz amonyum sülfat çöktürmesi, Q...

  1. Yüzey Dalgalarının Bastırılması Yöntemi ile Patlatma Kaynaklı Titreşimlerin Kontrol Edilmesi (Controlling of Blast Induced Vibration by Surface Wave Mitigation Method)

    OpenAIRE

    UYAR ALDAŞ, Güzin Gülsev

    2009-01-01

    Patlatma kaynaklı titreşimler, kaya patlatmaları yapılan maden ve taş ocaklarının en önemli çevresel problemleridir. Bu titreşimleri en aza indirebilmek için, sismik dalga mekaniğini göz ardı eden klasik metotlardan farklı olarak yeni bir yöntem geliştirilmiştir. Klasik yöntemlerin aksine, yöntem, gecikme süreleri hariç, herhangi bir patlatma parametresiyle (patlayıcı tipi, miktarı, patlatma geometrisi, delik tasarımı, delik derinliği, delik çapı vb.) ilgilenmez. Yöntem yüzey dalgalarının bas...

  2. Maliyet Liderliği Stratejisi Kapsamında Değer Mühendisliği Tekniğinin Uygulanmasının Bir Model Vasıtasıyla Analiz Edilmesi

    OpenAIRE

    Altan AYAN

    2013-01-01

    In this study conducted, firstly, cost leadership strategy is examined. Then, in the second section, value engineering technique is explained in extensive detail. In the third section, the implementation of value engineering technique in company production process examined through a model under the cost leadership strategy. Thus, value engineering technique is seen appropriate and advantageous for cost leader company. In addition to, the cost leader company can be more effective and competiti...

  3. Asude Bahar Ülkesine Yolculuk Olan Ölümün Şair Biyografilerinde İfade Edilmesi In Poet Biographies Expression Of Death A Passage To The Peaceful Spring Country

    Directory of Open Access Journals (Sweden)

    Abdullah AYDIN

    2013-09-01

    Full Text Available Collection of biographies of poets the sources of Classic TurkishLiterature inform about the poets’ life, character, literal personality andworks. Though the number of collection of biographies in TurkishLiterature has risen to forty, it will increase in number by newresearches possibly. There are both books and articles about how somespecific subjects are held on these works that involve the biographies ofpoets. Along with the informations about the poet’s character, physicalappearance, family, educational background, job, marriage, children,date of birth, place of birth, place of death there are information abouthis poesy.In this study, how the death of the poets are expressed isresearched inspring especially from the writers’ acting responsiblytowards indicating the date of death. The distinctness is formed byexamining former published works and identifying the samples whichwill complete them. Apart from the cause and time of death the wordsand word groups preferred for death knell are examined in terms ofstyle. While the death of poets are expressed by some simple sentencesas “died, expired, slaughtered” sometimes it is expressed in moreartistic ways related to poet’s name, nickname, job and lifestyle.Especially the tenth topic with its under titles is important in terms ofrevealing new styles of expression.Death which we regard ordinary by saying “all livings born, liveand die” and which is expressed in wholy Koran as “Külli nefsinzâikatü'l-mevt”, namely “every soul shall have a taste of death” is holdsometimes sadly but mostly in terms of its beauty. The writers havedeveloped a literary pleasure on death. Klasik Türk Edebiyatının kaynak eserlerinden Şair Tezkireleri şairlerin hayatı, mizacı, edebî kişiliği ve eserleri hakkında bilgi vermektedir. Türk Edebiyatında tezkire sayısı kırka ulaşmış olmakla beraber yeni araştırmalarla bu sayının artması muhtemeldir. Şair biyografilerini kapsayan bu eserlerde hangi konuların nasıl anlatıldığı üzerine hem kitap hem de makale çalışmaları yapılmıştır. Bu eserlerde şairin karakteri, fizikî görünümü, ailesi, öğrenim durumu, mesleği, evliliği, çocukları, doğumu, doğum yeri, ölümü gibi bilgilerin yanında şairlikleriyle ilgili bilgiler de yer almaktadır.Bu makalede, biyografi yazarlarının özellikle vefat tarihlerini belirtmekte titiz davranmalarından hareketle şairlerin ölümünün hangi tarzlarda ifade edildiği üzerine araştırma yapıldı. Bu konuda daha önce yayımlanan çalışmalar incelenerek onları tamamlayacak örneklerin tespit edilmesiyle bir farklılık oluşturuldu. Ölüm şekli ve zamanından ziyade vefat haberinin verilmesinde tercih edilen kelime ve kelime grupları üslup özelliği bakımından incelendi. Şair ölümleri “Öldü, fevt oldu, katledildi.” gibi basit cümlelerle ifade edilirken bazen de şairin ismi, mahlası, mesleği ve hayat tarzıyla bağlantılı bir şekilde daha sanatkârane işlenmektedir. Özellikle onuncu madde, alt başlıklarıyla beraber yeni ifade şekillerini ortaya koyması bakımından önemlidir.“Her canlı doğar, yaşar, ölür.” diye sıradanlaştırdığımız, kutsal kitabımız Kur’an’ın ise “Külli nefsin zâikatü'l-mevt”, yani “Her nefis ölümü tadacaktır.” şeklinde ifade ettiği ölüm, tezkire yazarlarımız tarafından bazen acı çoğu zaman güzel yönleriyle ele alınmıştır. Yazarlar ölüme dair edebî bir zevk geliştirmişlerdir.

  4. TARIMSAL YAPILARDA ÖĞÜTÜLMÜŞ HAFİF AGREGANIN KULLANILABİLME OLANAKLARI ÜZERİNE BİR ARAŞTIRMA

    OpenAIRE

    ÖRÜNG, İbrahim

    2014-01-01

    ÖZET : Bu araştırmada, öğütülmüş hafif agreganın bağlayıcılık (puzzolanik) özelliğinden yararlanarak daha düşük maliyetli yapı malzemelerinin elde edilmesi olanakları araştırılmıştır. Bu amaçla belirli bir inceliğe kadar kolayca öğütülebilen hafif agreganın belirli oranlarda çimento, kireç ve normal ince agrega ile birlikte kullanılmasıyla üretilen hafif blokların önemli fiziksel ve mekanik  özellikleri incelenmiştir.                  Araştırmada, öğütülmüş hafif agreganın bağlayıcılık özelli...

  5. Cloning and expression of HSF1 cDNA from Hainan Eld's deer%海南坡鹿HSF1cDNA的克隆与表达

    Institute of Scientific and Technical Information of China (English)

    成鹰; 林杰材; 满初日嘎; 杜丽; 王凤阳; 刘涛; 李治深; 许世英; 符运南; 林贤梅; 吴科榜

    2009-01-01

    采用RT-PCR和RACE方法扩增海南坡鹿热休克转录调节因子1(Heat shock transcription factor 1,HSF1)cDNA全长,将扩增产物与pMD20-T载体连接,重组质粒经PCR、酶切鉴定后测序并进行生物信息学分析;构建pET28a-hdHSF1表达载体,经IPTG诱导表达后,进行SDS-PAGE和Western blot分析.结果显示,海南坡鹿HSF1cDNA全长为2 036 bp,含有1个1 578 bp的开放阅读框,编码525个氨基酸.经生物信息学分析,HSF1是一个等电点为4.93的亲水性蛋白.经IPTG诱导表达后,得到一个带组氨酸标签的约62 kD的融合蛋白,用抗His单克隆抗体进行Western blot,得到一条约62 kD特异性抗体结合带,表明海南坡鹿HSF1原核表达载体成功构建并表达.

  6. Breakup of 42 MeV 7Li projectiles in the fields of 12C and 197Au nuclei

    Indian Academy of Sciences (India)

    Dhruba Gupta; C Samanta; R Kanungo; P Basu; Subinit Roy; S Kailas; A Chatterjee; B J Roy; K Mahata; A Samant; A Shrivastava

    2001-07-01

    Inclusive cross sections of particles and tritons from the breakup of 42 MeV 7Li by 12C and 197Au targets are presented and analysed in the framework of the Serber model. Spectral distortions due to the targets and relevant reaction mechanisms are discussed.

  7. RESEARCH ADVANCEMENT OF MICROEMULSIONS IN DRUG FlELD%微乳液在药物领域中的研究进展

    Institute of Scientific and Technical Information of China (English)

    刁兆玉; 李玲; 王仲妮

    2011-01-01

    In this paper, the structure and characteristics as drug carriers of microemulsion are described,and the recent progress on microemulsions as drug carders in different routes of administration have been reviewed and discussed. The broad prospects of research and development of microemulsions in the fields of drug have been expected.%作者介绍了微乳液的结构和作为药物载体的特点,综述了微乳液近年来作为药物载体在不同给药途径中的应用,并指出微乳在药品领域的研究和发展会有广阔的前景.

  8. Time-dependent restricted-active-space self-consistent eld theory: Formulation and application to laser-driven many-electron dynamics

    DEFF Research Database (Denmark)

    Miyagi, Haruhide; Madsen, Lars Bojer

    We have developed a new theoretical framework for time-dependent many-electron problems named time-dependent restricted-active-space self-consistent field (TD-RASSCF) theory. The theory generalizes the multicongurational time-dependent Hartree-Fock (MCTDHF) theory by truncating the expansion...

  9. Pseudo information entropy of a three-level atom interaction with two-laser fields in -configuration

    Indian Academy of Sciences (India)

    A-S F Obada; T M El-Shahat; M Abdel-Aty

    2003-10-01

    In this report we investigate some aspects of the pseudo entropy of multi-level system in the language of quantum information theory. The influence of the non-linear interaction and detuning parameter on the properties of the pseudo information entropy is examined.

  10. Toprak Solucanlarından Elde Edilen Vermikompostun Bazı Bitki Patojenleri Üzerindeki Antimikrobiyal Aktivitelerinin Araştırılması

    OpenAIRE

    Tutar, Uğur

    2013-01-01

    It was determined that ‘vermicompost’ created by earthworms by breaking down and decomposting organic waste biologically was effective against some pathogenic bacteria and fungi. In this study, tests of “disc diffusion" and "MIC" tests were applied to identify effects against soil-borne pathogen nine species bacteria and nine species fungi that cause diseases in plants by using extracts obtained using choloroform and ethanol from Eisenia fetida type earthworm’s “vermicompost”. According to th...

  11. Typical interferences of ULF electricfi eld waveform data observed by DEMETER%DEMETER卫星观测的ULF电场波形干扰分析

    Institute of Scientific and Technical Information of China (English)

    欧阳新艳; 申旭辉

    2015-01-01

    This paper analyzes typical interferences of ULF waveform records based on ULF electric field waveform data observed by French DEMETER satellite. There are two kinds of typical interferences, regularly impulsive interference induced by calibration sequences and increased noise level during Burst mode. The time features of regular interferences show that regular interferences are observed every 4 minutes inside a mode and at the beginning of each Burst and Survey modes. Combined with VLF power spectra, we can confirm that this kind of interferences is caused by 625 Hz calibration signals. By obtaining ULF power spectra,it is found that the increased noise level of ULF waveform records during Burst mode is not generated by signals of single frequency or band. This type of ULF interferences does not much affect the analysis of real ULF disturbances in space. Understanding typical interferences of ULF electric field waveform data can provide references for future studies on the earthquake-related ULF disturbances based on ULF waveform data observed by DEMETER satellite and the interferences analysis of similar data recorded by China Seismo-electromagnetic Satellite (CSES).%分析由法国DEMETER卫星观测的ULF电场波形数据,发现两种典型干扰:由标定信号引起的脉冲式周期干扰及详查期间噪声水平增加.结果表明:①周期干扰特征表现为:在固定工作模式期间,干扰以约4 min周期出现;在详查和巡查模式开始时刻,干扰出现.结合VLF频段功率谱,可确认此干扰由625 Hz标定信号引起;②在详查模式期间噪声增加,获取ULF频段功率谱发现,此干扰并非来自单个频点或频段信号,对空间真实的ULF扰动分析影响不大.认识ULF电场波形数据的典型干扰特征,可为后续ULF电场扰动研究提供参考,为我国电磁监测试验卫星同类数据干扰分析提供借鉴.

  12. One-year clinical outcomes in invasive treatment strategies for acute ST-elevation myocardial infarction complicated by cardiogenic shock in eld-erly patients

    Institute of Scientific and Technical Information of China (English)

    Yeon Pyo Yoo; Ki-Woon Kang; Hyeon Soo Yoon; Jin Cheol Myung; Yu Jeong Choi; Won Ho Kim; Sang Hyun Park; Kyung Tae Jung; Myung Ho Jeong

    2013-01-01

    Objective To investigate the clinical outcomes of an invasive strategy for elderly (aged≥75 years) patients with acute ST-segment elevation myocardial infarction (STEMI) complicated by cardiogenic shock (CS). Methods Data on 366 of 409 elderly CS patients from a total of 6,132 acute STEMI cases enrolled in the Korea Acute Myocardial Infarction Registry between January 2008 and June 2011, were collected and analyzed. In-hospital deaths and the 1-month and 1-year survival rates free from major adverse cardiac events (MACE;defined as all cause death, myocardial infarction, and target vessel revascularization) were reported for the patients who had undergone invasive (n=310) and conservative (n=56) treatment strategies. Results The baseline clinical characteristics were not significantly different between the two groups. There were fewer in-hospital deaths in the invasive treatment strategy group (23.5%vs. 46.4%, P<0.001). In addition, the 1-year MACE-free survival rate after invasive treatment was significantly lower compared with the conservative treatment (51%vs. 66%, P=0.001). Conclusions In elderly patients with acute STEMI complicated by CS, the outcomes of invasive strategy are similar to those in younger patients at the 1-year follow-up.

  13. ALIŞVERİŞ MERKEZLERİNİN MARKA KİŞİLİKLERİNİN KARŞILAŞTIRILMASI, İSTANBUL İLİNDE BİR UYGULAMA-COMPARISION on BRAND PERSONALITY of SHOPPINGCENTERS, A PRACTISE in ISTANBUL CITY

    Directory of Open Access Journals (Sweden)

    Şakir ERDEM

    2010-01-01

    Full Text Available Perakendecilik sektöründe yer alan Galleria ve Akmerkez alışveriş merkezleri marka kişiliklerinin karşılaştırılmasını yapmak ve tüketicilerin alışveriş merkezi tercihlerinde alışveriş merkezlerine atfettiği kişilik boyutlarını ve özelliklerini ortaya çıkarılabilmek amacıyla J. Aaker’ın 1997’de geliştirdiği beş ana marka kişiliği boyutu ve bu boyutların altında toplanan kişilik özellikleri temel alınmıştır. Marka kişiliğine ilişkin literatür taraması yapılmış; araştırma yöntemi olarak nitel araştırma ve nicel araştırma yöntemlerinin birleşmesinden meydana gelen karma araştırma yaklaşımı benimsenmiştir. Nitel veri toplanma araçlarından olan odak grup görüşmesinden faydalanılarak, nicel araştırmanın anketlerinin oluşturulmasında yararlı olabilecek bilgiler ve nicel araştırma örneklem yapısı ve yöntemine ışık tutan bilgiler elde edilmesi sağlanmıştır. Nicel araştırmada veri toplama aracı olarak anket yöntemi uygulanmış, analiz yapılmaya uygun 272 adet anket elde edilmiştir. Anket sonuçları SPSS programı yardımıyla kodlanmış, verilerin frekans ve yüzde dağılımları verilerek faktör analizleri, güvenirlik analizleri ve T-testi yapılmıştır. Araştırma sonucunda, alışveriş merkezi sektöründe marka kişiliğine dair dört boyut elde edilebilmiş; elde edilen dört boyut Galeria ve Akmerkez alışveriş merkezleri arasında karşılaştırılmıştır.- The present research aims to compare brand personalities of Galeria and Akmerkez shopping centers and to examine the brand personality traits and dimensions that consumers refer on shopping centers preferences. Research based on J. Aaker’s five dimensions of brand personality and the traits. We looked over the literature of brand personality. This research included pluralistic methodology: First, focus groups method was used to take qualitative research’s survey, sampling and

  14. Stres Koşullarında ACC Deaminaze Üretici Bakteriler Tarafından Bitki Gelişiminin Teşvik Edilmesi / Promotion of Plant Growth by ACC Deaminase-Producing Plant Growth Promoting Bacteria under Stress Conditions

    OpenAIRE

    Çakmakçı, Ramazan

    2011-01-01

    ÖZET: Aminosiklopropan karboksilat deaminaze (ACCD) enzimi içeren bitki gelişimini teşvik eden bakteriler, özellikle farklıçevresel stres koşullarını takiben bitki etilen düzeyini azaltarak bitki büyüme ve gelişmesine katkı sağlamaktadır. Toprakbakterilerinde belirlenen bu enzimin bitki-bakteri birlikteliğinde önemli rol oynadığı ileri sürülmektedir. Bu durumda ACCdeaminaze içeren bakteri bitki etilen düzeyini azaltabilirse, uy...

  15. Dengeleme Teorisi’nin Geçerliliğinin Panel Veri Analizi ile Test Edilmesi: BİST’de Ampirik Bir Uygulama(Testing the Validity of Trade-Off Theory by Using Panel Regression Analysis: An Empirical Application on ISE

    Directory of Open Access Journals (Sweden)

    İbrahim BOZKURT

    2014-12-01

    Full Text Available The aim of this study is to test the validity of Trade-Off theory by investigating the relationship between capital structures and market values of firms on ISE. In this study, 127.008 financial ratio, 20.664 monthly stock return, 4.704 market value and debt ratio which are belong to 168 firms traded on ISE between 2005 and 2011 is used. Firstly, efficient model predicting bankruptcy is confirmed by using balanced panel regression analysis for ISE. Secondly, by using efficient model, firms are divided two groups that consist of firms which have or not bankruptcy risk for each period and the relationship market values and debt levels of firms in each group is analyzed by using unbalanced panel regression analysis. The results of the analysis reveal that there is positive relationship between market values and debt levels of firms in terms of both groups. This result implies that Trade-Off theory is not validity on ISE.

  16. 50 MHz – 26,5 GHz Aralığında Çalışan Toplam Güç Radyometrenin Gerçekleştirilmesi ve Test Edilmesi - Realization and Test of The Total Power Radiometer Working Between 50MHz and 26.5 GHz Frequency Range

    OpenAIRE

    Celep, Murat; Yaran, Şenel; Hayırlı, Cem; Dolma, Arif

    2013-01-01

    Bu çalışmada, yarı iletken bir gürültü kaynağının “excess noise source” (ENR) değerini izlenebilir şekilde ölçmek için bir toplam güç radyometre kurulmuştur. Oldukça geniş olarak kabul edilen 50 MHz – 26,5 GHz frekans aralığında, gürültü kaynağını tek seferde ölçebilen bu sistemin testi, nominal 15 dB ENR değerine sahip standart gürültü kaynakları kullanılarak yapılmıştır. Geliştirilen toplam güç radyometre kullanılarak, değeri bilinen bir gürültü kaynağının hesaplanan ENR değerleri ile gerçe...

  17. Nedelsky ve Angoff Standart Belirleme Yöntemleri ile Elde Edilen Kesme Puanlarının Genellenebilirlik Kuramı ile Karşılaştırılması

    Directory of Open Access Journals (Sweden)

    Gülşen TAŞDELEN

    2010-06-01

    Full Text Available In this study, according to generalizability theory (G theory the variance components of the cutting scores obtained from Nedelsky and Angoff standards setting methods were compared. The data of this research were collected by using the 16 science and technology items which were asked on elementary 6th grade “Achievement Determination Exam (Seviye Belirleme Sınavı (SBS”. These items were graded by 40 science and technology experts (raters working in Ankara according to these two standards setting methods. The variance components of the cutting scores were obtained by using G theory. According to the results of the study, it is determined that the differences of the items can be revealed by using both Angoff and Nedelsky standards setting methods. While there is a rater consistency for the cutting scores obtained by Angoff method, rater consistency was not observed for the cutting scores obtained by Nedelsky method. In G study which both methods were taken in hand together, it was observed that the differences of the items could be revealed and there is a rater consistency for the cutting scores

  18. Validation of the FEW16 questionnaire for the assessment of physical well‐being in patients with heart failure with reduced ejection fraction: results from the CIBIS‐ELD study

    Science.gov (United States)

    Lashki, D. J.; Trippel, T. D.; Tscholl, V.; Fritschka, M.; Musial‐Bright, L.; Busjahn, A.; Kolip, P.; Störk, S.; Rauchfuß, M.; Inkrot, S.; Lainscak, M.; Apostolović, S.; Vesković, J.; Lončar, G.; Doehner, W.; Zelenak, C.; Düngen, H. D.

    2015-01-01

    Abstract Aims Patients with heart failure (HF) commonly suffer from severe impairment of quality of life (QoL). One main goal of HF treatment is improvement of QoL. Physical well‐being is an essential component of QoL. To enable assessment of physical well‐being in HF patients, we validated the FEW16 questionnaire in a prospective study with patients from the Cardiac Insufficiency Bisoprolol Study in ELDerly. Methods and results In 127 HF patients (age 73 ± 5.5 years, 72% male, 60% New York Heart Association class II, left ventricular ejection fraction 37 ± 8.5%), we measured physical well‐being (FEW16), QoL [36‐Item Short‐Form Health Survey (SF36)], and depressive symptoms [PRIME MD Patient Health Questionnaire German short version for depression (PHQ‐D)] at baseline and two follow‐up visits, and correlated FEW16 scores with QoL data and clinical parameters. FEW16 mean scores are 3.04 ± 1.04 at baseline, 3.19 ± 0.94 after 3 months, and 2.77 ± 0.94 after 2–4 years. We assessed data quality, scale assumptions, and construct validity and reliability. Cronbach's alpha for subscales resilience: 0.84; ability to enjoy: 0.80; vitality: 0.88; inner peace: 0.87; total score: 0.95. Intraclass correlation coefficient (ICC) is 0.87 (95% CI 0.84–0.89, ICC (1.4). Pearson's correlations of FEW16 with SF36 and PHQ‐D were significant. Six minutes walking distance and heart rate correlated significantly with the FEW16 total score. Conclusions The FEW16 showed good reliability, internal consistency, and intraclass correlation. FEW16 scores correlated well with psychological and physical well‐being (SF36) and clinical markers of exercise tolerance (6 min walk test and heart rate). Our results indicate a strong correlation of self‐reported physical well‐being with psychological factors. FEW16 values at baseline predicted the development of several aspects of QoL during beta‐blocker up‐titration.

  19. Reflection on the efficiency criteria for a long duration disposal with respect to temporary abandonment situations; Reflexion sur les criteres de performance d'un entreposage de longue duree (ELD) vis-a-vis des situations de delaissement temporaire

    Energy Technology Data Exchange (ETDEWEB)

    Heriard-Dubreuil, G.; Gadbois, S. [Mutadis, 75 - Paris (France); Chieber, C.; Schneider, Th. [Centre d' Etude sur l' Evaluation de la Protection dans le Domaine Nucleaire, 92 - Fontenay aux Roses (France)

    2002-08-15

    A study carried out by Mutadis and CEPN, on request of the CEA, aimed at supplying some elements allowing to elaborate some performance criteria for a long-term management system in front of situations of temporary abandonment of radioactive waste disposal facilities. The first part of the study has been the identification of case studies illustrating situations of loss of maintenance or temporary abandonment. The second phase has been the selection and analysis of 4 case studies (the ancient underground cavities in Ile-de-France, the regulation relative to new underground quarries, the abandoned mines in Loraine basin, and Unesco's approach for the protection of mankind world patrimony). These cases have been analysed with respect to various aspects: actors involved, construction management and memory preservation, liabilities in time and space, prevention means, scheduling, and resumption strategies. The concepts of abandonment, scheduling and resumption have been precised and analysed in a third part according to the case studies. Three goals - avoiding abandonment, encouraging scheduling and resumption - and eight characteristics are drawn from this analysis, which are indicators of the robustness of the system implemented to fulfill these 3 goals. These characteristics appear as strongly interdependent. (J.S.)

  20. 社区老年人轻度认知障碍患病率及其生活质量的调查%Study on Prevalence Rate and Quality of Life of Eldly Patients with Mild Cognitive Impairment in Community

    Institute of Scientific and Technical Information of China (English)

    潘惠英; 王君俏; 吴美玲; 陈江赟

    2012-01-01

    目的 了解金华市社区老年人轻度认知障碍患病情况及其生活质量,以期为社区干预提供依据.方法 2011年1-6月采用蒙特利尔认知功能量表(montreal cognitive assessment scale,MoCA)、日常生活能力量表(activities of daily living scale,ADL)和一般资料问卷对随机抽取的金华市916名社区老年人进行轻度认知障碍筛查,对筛查得到的154例患者采用老年性痴呆生活质量量表(quality of life in Alzheimer's disease,QOL-AD)进行生活质量调查.结果 金华市社区老年轻度认知障碍患病率为17.2%.Logistic回归显示:较高文化程度、参加社交活动、喝茶、良好睡眠以及学习是老年轻度认知障碍的预防因素,而高龄是危险因素.多元线性回归显示,经济状况、认知功能和日常活动能力是影响患者生活质量的重要因素.结论 金华市社区老年人轻度认知障碍的患病率较高,影响老年人的身心健康和生活质量,应采取积极措施帮助患者提高生活质量.%Objective To investigate the prevalence rate and quality of life(QOL) in patients with mild cognitive impairment (MCI) in Jinhua community,so as to provide evidence for community intervention. Methods A total of 916 elderly patients in community were screened by montreal cognitive assessment scale(MoCA), activities of daily living scale (ADD and the general information questionnaire on their MCI. After the screening, 154 MCI patients were further investigated on OOL using quality of life in Alzheimer's disease(QOL-AD). Results The prevalence rate of MCI was 17. 2% in the community-dwelling elderly in Jinhua. Multivariate Logistic showed that good education,social activities,tea,good sleep and learning were protective factors of MCI and old age was a risk factor. Multiple linear regressions (MLR) showed that the financial situation, cognitive functions and the ability of daily activity were significant factors of QOL of MCI patients. Conclusion The prevalence rate of MCI is higher in Jinhua communities, and it has a negative affect on the QOL of patients . Measures should be taken to improve quality of life of MCI patients.

  1. 强效艾美耳牌鸡球虫苗Ⅰ型的田间试验%EFFICACY OF EINERIVAC PLUS, A COCCIDIOSIS VACCINE, AGAINST COCCIDIOSIS IN BROILERS UNDER FI ELD CONDITIONS

    Institute of Scientific and Technical Information of China (English)

    索勋; 汪明; 吴文学; 潘保良

    2001-01-01

    Three trials were designed to test the efficacy of Eineri vac Plus,a coccidiosis vaccine developed in the Parasitology Laboratory,College of Veterinary Medicine,China Agricultura l University,against coccidiosis in broi lers under field conditions.In the first trial,broliers vaccinated by oral dropp ing at day old were compared with non-va ccinated,maduramasinmedicated broilers.I n the second trial,chickens vaccinated t hrough feed-spraying at day old were com pared with non-vaccinated,diclazuril-med icated chickens.In the third trial,birds vaccinated by oral dropping at 5 days o ld were compared with non-vaccinated,non -medicated birds. Compared with maduramasin,Einerivac Plus was move effective,judged by resistance to challenge infection and performance, in terms of food conversion and body wei ght gains.Compared with diclazuril,Einer ivac Plus was of the same efficacy,judge d by food conversion and body weight gai ns,but vaccinated chickens were more res istant to challenge infection.Compared w ith non-vaccinated,non-medicated birds,b irds that were vaccinated performed bett er,judged by body weight gains,food conv ersion,and livability.%本文报道了强效艾美耳牌鸡球虫苗Ⅰ型对AA肉用仔鸡的田间免疫效果,马杜霉素或地克珠利作为对照药物;另一组以不用任何抗球虫药物作为对照。实验显示,与马杜霉素相比,使用强效艾美耳牌鸡球虫苗Ⅰ型后,AA肉用仔鸡在增重、饲料效率和成活率方面的优势;与地克珠利相比,使用强效艾美耳牌鸡球虫苗Ⅰ型后,AA肉用仔鸡在增重和饲料效率方面,效果相当,但成活率高 1%;与不用抗球虫药物组相比,使用强效艾美耳牌鸡球虫苗Ⅰ型后,鸡群在增重、饲料效率、成活率方面,均有显著优势。

  2. Atık Alkali Pillerden Elde Edilen Çinko Tozun Sodyum Hidroksit Çözeltilerindeki Çözünürlüğünün İncelenmesi

    OpenAIRE

    Özdemir, Gülistan Deniz Turhan; Demirkıran, Nizamettin

    2016-01-01

    Atık pillerin metal içerikleri metalürjik yöntemler yardımıyla geri kazanılabilir. Bu yöntemlerden birisi hidrometalurjik metottur ve sulu çözeltilerde kimyasal reaksiyonlar yardımıyla metal, metal tuzları ve bileşiklerinin üretimini kapsar. Metodun ilk aşaması katı sıvı kütle transferini içeren liç prosesidir. Liç işleminde katı madde bir çözücü ile çözündürülür ve metal değerler çözelti ortamına transfer edilir. Bu çalışmada, atık alkali pillerdeki çinko pil tozunun sodyum hidro...

  3. 老年冠心病患者同型半胱氨酸水平与心功能关系探讨%Relationship between plasma homocysteine and heart funtion in eldly patients with coronary heart desease

    Institute of Scientific and Technical Information of China (English)

    姚丽梅; 文宏; 刘唐威

    2008-01-01

    目的 探讨老年冠心病患者血中同型半胱氨酸(Hcy)水平与心功能的关系.方法 65例老年冠心病患者按美国纽约心脏病学会心功能分级标准(NYHA)分为4级,分别测定各级Hcy水平.结果 心力衰竭组Hcy升高的比率83.7%,较心功能正常组Hcy升高的比率(6.3%)明显增高,差异有统计学意义(P<0.05).心功能Ⅰ、Ⅱ、Ⅲ、Ⅳ级的Hcy分别为(9.37±1.97)、(16.30±3.19)、(20.93±3.38)、(32.44±7.39)μmol/L.4级间比较差异均有统计学意义(均P<0.05).结论 心功能异常组的高Hcy血症较常见,且Hcy水平明显高于心功能正常组,并随着Hcy水平的升高,心功能受损程度增加.

  4. The Importance of Database Design and Normalization Process Veri Tabanı Tasarımının Önemi ve Normalizasyon Süreci

    Directory of Open Access Journals (Sweden)

    Tülay Fenerci

    2001-06-01

    Full Text Available Database management systems are major tools which provide management of organizations' operational data via computers. However their efficient usage depends on how well database tables are organized. When undesigned data is stored in the database there probably occur some problems such as data repeating and waste of storage space. In order to prevent such problems a normalization process is applied to tables. Normalization is a process of refining relations where relations are formed by gathering attributes. Hence problems such as repeating of data, dependency and combined relationships are solved with normalized base tables. Therefore database design is an important fact in efficiency of database management systems. Veri tabanı yönetim sistemleri kuruluşların işlemlerinin bilgisayar aracılığı ile yönetilmesini sağlayan önemli araçlardır. Ancak verimli kullanılabilmeleri için veri tabanı tablolarının iyi organize edilmesi gerekir. Tablo tasarımı yapılmadan veriler sisteme yüklenirse veri tekrarı ve yer kaybı gibi sorunlar yaşanabilir. Bu tür sorunların ortadan kaldırılması için tablolar üzerinde normalizasyon süreci uygulanır. Normalizasyon özelliklerin bir araya getirilmesi ile oluşturulan ilişkilerin, rafine edilmesini sağlar. Dolayısıyla elde edilen taban tablolarda tekrar, gizli bağımlılık ve bileşik ilişkilerin bir arada gösterilmesinden kaynaklanan sorunlar çözümlenmiş olur. Bu açıdan veri tabanı yönetim sisteminin verimli kullanımında tasarım önemli bir etki unsurudur.

  5. Genel Bilişsel Yetenek Ölçümlerinde Süre ve Performans İlişkisinde A Tipi Kişiliğin Rolü(The Role of Type A Personality on the Relationship between Time and Performance in Measurement of General Cognitive Ability

    Directory of Open Access Journals (Sweden)

    Murat GÜLER

    2016-04-01

    Full Text Available Organizasyonların personel seçiminde kullanılan bilişsel yetenek ölçümlerinin, objektif ve yansız olarak yapılması, ihtiyaç duyulan uygun nitelikteki insan kaynağının temin edilmesi için önemli bir husustur. Ancak, bilişsel yetenek testlerinin kişilik özelliklerinden etkilendiğine dair bazı bulgular öne sürülmektedir. Mevcut araştırmada, genel bilişsel yetenek (GBY ölçümlerinde süre ve performans ilişkisinde A Tipi kişiliğin rolü 271 üniversite öğrencisinden elde edilen verilerle incelenmiştir. Veriler, A Tipi Kişilik Ölçeği ve Raven Standart Progresif Matrisler Testi ile toplanmıştır. Genel örneklemde ve A Tiplerinde GBY test performansı ve süresi ile A Tipi kişilik arasında anlamlı bir ilişki gözlenmezken, B Tiplerinde test süresinin ve yaşın GBY test performansının yordayıcısı olduğuna ilişkin bulgulara ulaşılmıştır. Objectively and impartially application of cognitive ability measurements that used in personnel selection of organizations, is a vital issue for providing needed appropriate human resources. But, some findings have been suggested that personality traits influence the measurement of cognitive abilities. In the current study the relationship between general cognitive ability (GCA and Type A personality (TAP was investigated with the data collected from 271 university students. The assessment instruments used were: Type-A Behavior Scale and Raven Standard Progressive Matrices Test. The findings revealed that, while there was no relationship between GCA, testing time and TAP in the general sample and Type A group, testing time and age were predictors of the GCA test performance in the Type B group

  6. Bilgi Liderliğinin Verimlilik Üzerine Etkisi: Sağlık Sektöründe Bir Araştırma / The Effect of Knowledge Leadership on Productivity: A Research on Health Sector

    Directory of Open Access Journals (Sweden)

    Karahan, Atilla

    2009-04-01

    Full Text Available Bilgiyi sistematik bir biçimde yöneten ve katma değer elde eden işletmeler rekabet avantajı sağlayacak ve rekabeti karşılayacaktır. İşletmelerde bilginin elde edilmesi, saklanması, paylaşılması ve kullanılmasına, diğer bir deyişle bilgi yönetiminin etkin ve başarılı bir şekilde gerçekleşmesine etki eden faktörler bulunmaktadır. Araştırmanın temel amacı küresel ekonomide bilgi liderliğinin verimlilik üzerine etkisinin araştırılmasıdır. Çalışma, bilgiyi üretme ve kullanmada en başarılı örnekleri sergileyen araştırma hastanelerinde görev yapan yöneticiler üzerinde gerçekleştirilmiştir. Araştırmanın kapsamına Afyon Kocatepe Üniversitesi, Isparta Süleyman Demirel Üniversitesi, Konya Selçuk Üniversitesi, Kütahya Dumlupınar Üniversitesi ve Eskişehir Osmangazi Üniversitesi hastanelerinde görev yapan başhekimler, başhekim yardımcıları, hastane müdürleri, müdür yardımcıları, başhemşireler ve başhemşire yardımcılarından oluşan toplam 120 yönetici dahil edilmiştir. Bu araştırmanın sonucunda ise bilgi liderliğinin verimlilik üzerine olumlu etkisi olduğu sonucuna varılmıştır.Organisations, which manage knowledge systematically, would have competitive advantage. In this respect, some factors like collecting, saving, using and sharing knowledge should be subjected under consideration. The main objective of the present research is to examine the knowledge leadership in a global economy. Empirical study was performed on managers of Research Hospitals, who were known with their success in producing and using knowledge. Included in the empirical investigation were hospital managers, managerial assistants, head nurses and assistant head nurses of Afyon Kocatepe University, Isparta Süleyman Demirel University, Konya Selçuk University, Kütahya Dumlupınar University and Eskişehir Osmangazi University hospitals. The results revealed a positive effect of knowledge

  7. Higher dimensional global monopole in Brans–Dicke theory

    Indian Academy of Sciences (India)

    Farook Rahaman; Subenoy Chakraborty; Mehedi Kalam

    2002-01-01

    The gravitational field of a higher dimensional global monopole in the context of Brans–Dicke theory of gravity is investigated. The space time metric and the scalar field generated by a global monopole are obtained using the weak field approximation. Finally, the geodesic of a test particle due to the gravitational field of the monopole is studied.

  8. Büyükbaş Hayvan Atıkları için Kurulacak Havasız Çürütme Tesisinin Ekonomik Analizi

    Directory of Open Access Journals (Sweden)

    Tamer Coşkun

    2012-12-01

    Full Text Available Özet Büyükbaş hayvan atıkları, içeriğindeki yüksek katı madde, organik kirlilik ve patojen mikroorganizmalar sebebiyle halk sağlığı açısından olumsuz etkiler yapabilecek bir atıktır. Bu çalışmada havasız çürütme ile atıkların stabilize edilerek biyogaz elde edilmesi ve çürümüş atıkların toprakta doğal gübre olarak kullanılmasını içeren bir yönetim modeli uygulanmıştır. Bunun için pilot ölçekli bir havasız çürütme reaktörü işletilmiş ve çürümüş atıklar çeşitli dozlarda yonca, Macar fiğ ve arpa karışımı ile mısır silajı bitkilerinin ekildiği alanlarda doğal gübre olarak toprağa eklenmiştir. Havasız çürütme işleminde yarımcı materyal olarak mısır silajı da reaktöre beslenmiştir. Çalışma sonunda elde edilen sonuçlar ve literatür yardımıyla 1000 baş hayvan için kurulum ve işletme maliyetleri hesaplanmıştır. Kurulum maliyeti; elektrik üretim sisteminin kurulup kurulmaması açısından iki farklı değer olarak hesaplanmıştır. İşletme maliyetleri farklı tarla ürünleri ve yine elektrik sisteminin kurulup kurulmaması açılarından çeşitli durumlar için hesaplanmıştır. Sonuç olarak elde edilen en iyi sonuçlara göre; çürümüş atıklar Macar fiğ ve arpa karışımı bitkisinin ekiminde kullanıldığında kurulacak tesisin elektrik üretim sistemi de kurulduğunda 2,5 yılda, elektrik üretim sistemi kurulmadığında ise 2,1 yılda kendisini amorti ettiği bulunmuştur. Abstract Cattle manure is a potential for causing detrimental effects on human health due to its high solid matter and pathogen microorganism content. This study aims to achieve biogas production by stabilizing the waste using anaerobic digestion. Digested waste was utilized as natural fertilizer. For that reason, a pilot-scale anaerobic digestion tank was operated and digested wastes were added to soil in diverse dosages where alfalfa, the mixture of Hungarian

  9. Büyükbaş Hayvan Atıkları için Kurulacak Havasız Çürütme Tesisinin Ekonomik Analizi / The Economical Analysis of Cattle Manure Treatment by Anaerobic Digestion Process

    Directory of Open Access Journals (Sweden)

    Tamer Coşkun

    2012-12-01

    Full Text Available Büyükbaş hayvan atıkları, içeriğindeki yüksek katı madde, organik kirlilik ve patojen mikroorganizmalar sebebiyle halk sağlığı açısından olumsuz etkiler yapabilecek bir atıktır. Bu çalışmada havasız çürütme ile atıkların stabilize edilerek biyogaz elde edilmesi ve çürümüş atıkların toprakta doğal gübre olarak kullanılmasını içeren bir yönetim modeli uygulanmıştır. Bunun için pilot ölçekli bir havasız çürütme reaktörü işletilmiş ve çürümüş atıklar çeşitli dozlarda yonca, Macar fiğ ve arpa karışımı ile mısır silajı bitkilerinin ekildiği alanlarda doğal gübre olarak toprağa eklenmiştir. Havasız çürütme işleminde yarımcı materyal olarak mısır silajı da reaktöre beslenmiştir. Çalışma sonunda elde edilen sonuçlar ve literatür yardımıyla 1000 baş hayvan için kurulum ve işletme maliyetleri hesaplanmıştır. Kurulum maliyeti; elektrik üretim sisteminin kurulup kurulmaması açısından iki farklı değer olarak hesaplanmıştır. İşletme maliyetleri farklı tarla ürünleri ve yine elektrik sisteminin kurulup kurulmaması açılarından çeşitli durumlar için hesaplanmıştır. Sonuç olarak elde edilen en iyi sonuçlara göre; çürümüş atıklar Macar fiğ ve arpa karışımı bitkisinin ekiminde kullanıldığında kurulacak tesisin elektrik üretim sistemi de kurulduğunda 2,5 yılda, elektrik üretim sistemi kurulmadığında ise 2,1 yılda kendisini amorti ettiği bulunmuştur. The Economical Analysis of Cattle Manure Treatment by Anaerobic Digestion Process Cattle manure is a potential for causing detrimental effects on human health due to its high solid matter and pathogen microorganism content. In this study, it was aimed to achieve biogas production by stabilizing the waste using anaerobic digestion. Digested waste was utilized as natural fertilizer. For that reason, a pilot-scale anaerobic digestion tank was operated and digested wastes

  10. Decoherence and infrared divergence

    Indian Academy of Sciences (India)

    J Kupsch

    2002-08-01

    The dynamics of a particle which is linearly coupled to a boson field is investigated. The boson field induces superselection rules for the momentum of the particle, if the field is infrared divergent. Thereby the Hamiltonian of the total system remains bounded from below.

  11. İçsel Markalaşma Uygulamalarıyla Markanın Örgüt İçerisinde Tutundurulması: ARKAS Holding Örnek Olayı* ( Promoting Brand Within Organization Via Internal Branding: ARKAS Holding Case Study

    Directory of Open Access Journals (Sweden)

    Aysun KAHRAMAN

    2015-12-01

    Full Text Available İçsel markalaşma; çalışanların, çalıştıkları işletmenin marka vaadini, marka değerini anlaması ve benimsemesi sonucunda, dış müşterilerin de markayı daha kolay benimseyeceğini savunmaktadır. Bu çalışmanın amacı, ülkemiz literatüründe yeterince ele alınmamış olan içsel markalaşma olgusunu teorik temeller ve uygulama aşamaları açısından açıklığa kavuşturmaktır. Çalışmada ilk olarak markalaşmanın önemine ve markalaşma sürecinde çalışanların rollerine değinilmiştir. Daha sonra içsel markalaşma kavramı, içsel markalaşma uygulamalarında kullanılan teknikler ve araçlar teorik olarak incelenmiştir. Çalışmanın uygulama bölümü için bir hizmet işletmesi olan Arkas Holding’in iki yöneticisiyle, Arkas Holding’deki içsel markalaşma uygulamalarıyla ilgili olarak derinlemesine görüşmeler yapılmıştır. Yapılan görüşmeler sonrasında elde edilen bulgular değerlendirildikten sonra Arkas Holding’de içsel markalaşmanın önemi, içsel markalaşma uygulamalarının nasıl gerçekleştiği, bu süreçte dikkat edilmesi gereken unsurlar ve karşılaşılan zorluklar ortaya konulmuştur. Internal branding supports the idea that external customers will internalize the brand more easily if employees understand and adopt the brand promise and brand values of the company which they work for. The aim of this study is to clarify internal branding phenomenon, which which has not been discussed enough in the Turkish literature, in terms of literature and application areas. Firstly the study has discussed the importance of branding process and the role of employees in this process. Then, the concept of internal branding, the technics and the tools whics are used for application of internal branding is examined theoretically. In the application part in-depth interviews were conducted with two managers of Arkas Holding about internal branding activities in Arkas Holding. After

  12. Türkiye’de eğitimsel eşitsizlik ve toplumsal tabakalaşma ilişkisine dair ampirik bir çalışma [The relationship between educational inequality and social stratification in Turkey: An empirical study

    Directory of Open Access Journals (Sweden)

    Yalın KILIÇ

    2014-10-01

    Full Text Available Bu çalışmada, Türkiye’deki eğitimsel eşitsizliklerin toplumsal tabakalar açısından çözümlenmesi amaçlanmıştır. Araştırma TÜİK tarafından uygulanan 2006 yılı Hane Halkı Bütçe Anketi verilerine dayalı olarak planlanmıştır. Hane Halkı Bütçe Anketleri, hanelerin sosyo-ekonomik yapıları, yaşam düzeyleri, tüketim kalıpları hakkında bilgi veren ve toplumun gereksinimlerinin belirlenmesi, kullanılabilir gelirin haneler ya da bireyler arasında ne şekilde dağıldığının bilinmesi ve uygulanan sosyo-ekonomik politikaların geçerliğinin test edilmesi amacıyla kullanılan en önemli kaynaklardan biridir. Dolayısıyla bu çalışmada hane halkı bütçe anketinin verileri toplumsal tabakaların oluşturulmasında temel veri kaynağını oluşturmuştur. Çalışmada, yetişkin nüfusun eğitim düzeyinin cinsiyetle ve elde edilen gelirle ve eğitim çağındaki çocukların eğitim kademeleri itibariyle okullaşma oranlarının cinsiyetle ve hanedeki kişi başı düşen ortalama gelirle ilişkileri toplumsal tabakalar açısından incelenmektir. Bu hedef doğrultusunda öncelikle TÜİK tarafından uygulanan 2006 yılı Hane Halkı Bütçe Anketi verileri işlenmiş ve analiz edilmiştir. Çalışmada verilerin özelliklerine ve kurulan hipotezlere göre; Kay-kare, korelasyon ve varyans analizi yapılmıştır. Yapılan çözümlemeler sonucunda toplumsal tabakaların eğitimsel eşitsizliklerin önemli bir açıklayıcısı olduğu belirlenmiştir.

  13. ELEMENTARY 8 TH GRADE STUDENT’S LEVEL OF ABILITY TO APPLY SPELLING RULES AND PUNCTUATION MARKS İLKÖĞRETİM 8. SINIF ÖĞRENCİLERİNİN NOKTALAMA İŞARETLERİ İLE YAZIM KURALLARINI UYGULAYABİLME DÜZEYİ

    Directory of Open Access Journals (Sweden)

    Hasan BAĞCI

    2011-01-01

    Full Text Available In a written text, in order to clarify the narration and reinforce the comprehensibility for readers to understand it accurately and properly, it is required to pay attention while applying spelling rules and using punctuation marks appropriately in their proper places. Regardless of their levels, when students’ written texts are analyzed, it is found that erroneous sentences mostly focus on punctuation and spelling rules. Due to the fact that these errors cannot be corrected, problems related to insufficient use of mother tongue are encountered. Because of this reason, the aim of the present study is to determine students’ level of ability to apply spelling rules and punctuation marks at elementary schools’ 8 th grade, which is the last phase of obligatory education. In this study, two written texts which were chosen from Turkish Language course books of secondary education were used to collect data. In the ligth of the findings, the students’ achievement levels of ability to apply spelling rules and use punctuation Marks in an appropriate way were determined. Yazılı bir metinde anlatımı belirginleştirmek, yazının tam ve doğru bir şekilde anlaşılmasını kuvvetlendirmek için noktalama işaretlerinin yerli yerinde kullanılmasına ve yazım kurallarına uyulmasına dikkat edilmesi gerekir. Hangi seviyede olursa olsun öğrencilerin yazılı anlatım metinleri incelendiğinde hatalı cümlelerin daha çok noktalama ve yazım kuralları üzerine yoğunlaştığı görülmektedir. Bu hataların giderilememesinden kaynaklanan ana dili kullanma yetersizliği sorunuyla karşılaşılmaktadır. Bu yüzden araştırmanın amacı zorunlu eğitimin son aşaması olan ilköğretim 8. sınıf öğrencilerinin noktalama işaretleri ile yazım kurallarını doğru uygulayabilme düzeylerini tespit etmektir. Bu araştırma betimsel nitelikte bir alan araştırmasıdır. Araştırmada veri toplamak amacıyla ilköğretim ikinci kademe T

  14. Child abuse and neglectÇocuk istismarı ve ihmal

    Directory of Open Access Journals (Sweden)

    İlyas Özgentürk

    2014-07-01

    Full Text Available Children's physical, emotional and sexual abuse and neglect are widespread social and health problem across societies. Child abuse covers all kinds of attitudes and neglects that affect and limit children physical and emotional development by the parents or child careers. Child abuse affects the children’s emotional and physical development negatively. A child whose emotional development is disturbed lives with very serious psychological and communication problems as well as decrease of life quality. Child abuse can be a learned and passed through cognitive behavior. It is known that the perpetrators of child abuse are also victims of child abuse in their own childhoods. Child abuse can be one kind of cycle of violence. Today’s victims of child abuse have a tendency to become the perpetrators of tomorrow’s child of abuse. Child abuse can be prevented by the collective efforts of the whole community. Establishing a collective consciousness about the harms of the child abuse can become the initial step of fighting against child abuse. The considerable success can be reached when effective public policies, which attribute to collective consciousness addressing different fractions of the society are established. ÖzetÇocukların fiziksel, duygusal ve cinsel yönden istismar ve ihmal edilmesi tüm toplumlarda yaygın görülen bir sosyal ve sağlık sorunudur. Çocuk istismarı ve ihmali; çocuğun anne, babası ya da bakmakla yükümlü olan bir kimse tarafından çocuğun fiziksel ve duygusal gelişimini engelleyen ya da kısıtlayan eylem ve ihmallerin tümüdür Çocuk istismarı çocuğun duygusal ve fiziksel gelişimini olumsuz yönde etkiler. Duygusal gelişimleri bozulan çocukların yaşam kaliteleri düşer ve sonraki yaşamlarında ciddi psikolojik ve iletişim sorunları yaşarlar. Çocuk istismarı öğrenilen ve nesilden nesile aktarılan bir davranıştır. Çocuklarını istismar eden kişilerin bir zamanlar kendilerinin de

  15. Genetik Epidemiyolojide Kullanılan Bazı Araştırma Tasarımları

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    Esra PAMUKÇU

    2012-01-01

    Full Text Available Genetik epidemiyoloji, insan toplumunda ve onların aileden miras kalan özelliklerinde, hastalığa yol açan gen ve çevresel faktörlerin etkileşimini inceleyen bir bilim dalıdır. Son yıllarda kullanılmaya başlanılan tüm-genom çaplı araştırmalar, geniş hasta ve kontrol gruplarının, kısa sürede ve yüksek çözünürlükle analiz edilmesini mümkün kılarak genetik çalışmalara ivme kazandırmış, kalıtsal hastalıklara genetik bakışı farklılaştırmış ve yeni kavramlar yüklemiştir. Böylece genetiğin sadece basit, yüzeysel ve nadir karakteristiklerin kalıtımı ile ilgilendiği düşüncesi, günümüzde hayatın temel şekillenme süresinde genlerin oynadığı rolün anlaşılması şekline dönüşmüştür. Türkiye'de halk sağlığı çalışmalarında epidemiyolojik yöntemler sık olarak kullanılırken, genetik faktörlerin halk sağlığı üzerindeki olası etkilerinin incelenmesine duyulan ihtiyaç nedeniyle, bu alanda çalışan klinisyenlerin, genetik epidemiyoloji konusundaki ilgisinin arttığı gözlemlenmektedir. Epidemiyoloji, genellikle toplum tabanlı örneklemeyi kullanarak akraba olmayan kişiler üzerinde çalışırken; genetik epidemiyoloji, hastalıkla alakalı bir aile öyküsüne sahip, genetik olarak yüksek risk grubunda ve akraba olan belirli kişiler üzerine yoğunlaşmaktadır. Bu nedenle genetik çalışmalarda kullanılan çalışma tasarımları da epidemiyolojide kullanılan genel tasarımlardan belirli şekillerde farklılıklar gösterebilmektedir. Bu derlemenin amacı, epidemiyolojik araştırmalarda kullanılan olgu kontrol ve kohort araştırma tasarımlarının, hastalıkların genetik yapı ve çevre ile olan ilişkisini incelerken nasıl kullanıldığı, bu tür araştırmaların planlama ve analizinde dikkat edilmesi gereken konuları açıklamak amacıyla literatürde var olan bazı makalelerin ve kitapların incelenmesi ve elde edilen bilgilerin özetlenmesidir.

  16. Swarm's absolute magnetometer experimental vector mode, an innovative capability for space magnetometry

    DEFF Research Database (Denmark)

    Hulot, Gauthier; Vigneron, Pierre; Leger, Jean-Michel;

    2015-01-01

    readings of the magnetic eld. Since launch, these ASMs provided very high accuracy scalar eld data, as nominally required for the mission, together with experimental vector eld data. Here, we compare geomagnetic eld models built from such ASM-only data with models built from the mission's nominal 1Hz data......, combining ASM scalar data with independent uxgate magnetometer vector data. The high level of agreement between these models demonstrates the potential of the ASM's vector mode for data quality control and as a stand alone magnetometer, and illustrates the way the evolution of key eld features can easily...

  17. Effect of Low Mountain Climate Convalescence Nursing on the Psychosomatic Health of the Eld-erly Hypertensive Patients%低山带疗养护理对老年高血压患者心身健康的影响

    Institute of Scientific and Technical Information of China (English)

    赵晓红; 姚萍; 曹莉芬; 李清红; 朱开梅; 冯小力

    2014-01-01

    Objective To discuss the effect of low mountain climate convalescence nursing on psychoso-matic health status of elderly hypertensive patients.Methods 68 elderly hypertensive patients nursing in Jigong Mountain from July to September in 2012 were selected.Blood pressure,heart rate,oxyhemoglobin saturation,body mass index and psychological health status before and after the convalescence were investi-gated and compared respectively.Results After the convalescence,systolic pressure and oxyhemoglobin saturation were all better than before convalescence (all P 0.05). There were significant differences of the scores of somatization,depression,anxiety,phobic anxiety and sleeping and eating disorders compared with pre-convalescence (all P 0.05).Conclusion Convalescence in low mountain climate has a positive effect on the blood pressure and the psychosomatic health status in elderly hypertensive patients.%目的:探讨低山带疗养护理对老年高血压患者心身健康的影响.方法2012年7-9月,广州军区武汉疗养院对在鸡公山疗养地疗养的68名老年高血压患者疗养前后的血压、心率、血氧饱和度、体质指数及心理健康状况等进行了研究并比较.结果疗养后,老年高血压患者的收缩压及血氧饱和度均优于疗养前(均 P <0.01),舒张压、心率、BMI 等与疗养前比较,差异均无统计学意义(均 P >0.05);躯体化、抑郁、焦虑、恐怖、睡眠饮食障碍等5项因子均分与疗养前的差异均有统计学意义(均 P <0.05),其余因子的评分与疗养前的差异均无统计学意义(均 P >0.05).结论低山带气候疗养护理对老年高血压患者的血压及心身健康状况有积极的影响.

  18. Correlation between coronary artery SYNTAX integra and estimated glomerular filtration rate and carotid intima-media thickness in eldly patients with coronary artery disease%冠状动脉SYNTAX积分与内生肌酐清除率及颈动脉内膜中层厚度的相关性

    Institute of Scientific and Technical Information of China (English)

    申琳

    2014-01-01

    目的:探讨老年冠心病患者冠状动脉(冠脉)SYNTAX积分与肾小球滤过率估算值(estimated glo-merular filtration rate,eGFR)及颈动脉内膜中层厚度(carotid intima-media thickness,CIMT)的关系.方法:回顾性分析在我院经造影证实3支病变和(或)左主干病变的老年冠心病患者43例,计算SYNTAX积分并进行危险分层,利用Cockcroft-Gault公式计算eGFR,采用超声测定CIMT,分析患者SYNTAX积分与eGFR及CIMT的关系.多元线性回归分析法分析影响SYNTAX积分的危险因素.结果:老年冠心病患者SYNTAX评分与eGFR呈负相关(r=一0.36,P<0.05);SYNTAX评分与CIMT呈正相关(r=0.33,P<0.05);CIMT与eGFR负相关(r=-0.47,P<0.05).将患者以SYNTAX积分(低危0~22分,中危23~32分,高危≥33分)进行分层分析,低危组与中危组、低危组与高危组CIMT差异有统计学意义(P<0.05),低危组与中危组及高危组eGFR差异有统计学意义(P<0.05).eGFR(β=-0.1834,P=0.002 4)是SYNTAX积分的独立危险因素.结论:颈动脉内膜的变化与冠脉病变相关;随着老年冠心病患者肾脏功能的减退,动脉粥样硬化有逐渐加重的趋势.

  19. Evaluation of pyrethroids toxicity in a laboratory strain and a fi eld population of Rachiplusia nu (Lepidoptera: Noctuidae using two bioassay techniques Evaluación de la toxicidad de piretroides en una cepa de laboratorio y una población de campo de Rachiplusia nu (Lepidoptera: Noctuidae usando dos métodos de bioensayo

    Directory of Open Access Journals (Sweden)

    Romina Russo

    2012-06-01

    Full Text Available Soybean is the most important crop in Argentina and Rachiplusia nu (Gueneé (Lepidoptera: Noctuidae is one of its main pests. In this study, the toxicity of five pyrethroids applied topically and by exposure to films on filter paper was evaluated on third instar larvae from a laboratory strain and a field population of R. nu. Four cyanopyrethroids and one non-cyanopyrethroid (permethrin were tested. All cyanopyrethroids showed the same order of increasing toxicity, regardless of the form of application and origin of the larvae: cypermethrin La soja es el cultivo más importante en la República Argentina y Rachiplusia nu (Gueneé (Lepidoptera: Noctuidae, una de sus principales plagas. En este estudio se evaluó la toxicidad de cuatro cianopiretroides y un no-cianopiretroide, aplicados en forma tópica o por exposición a filmes sobre papeles de filtro, en ninfas del tercer estadio de una cepa de laboratorio y una población de campo de R. nu. Todos los cianopiretroides mostraron el mismo orden de toxicidad creciente, independientemente de la forma de aplicación y del origen de las larvas: cipermetrina < ?-cihalotrina < deltametrina < ß-ciflutrina. Los valores de Dosis de Volteo para el 50% (DV50 y de Tiempo de Volteo para el 50% (TV50 aumentaron en función de la solubilidad de los cianopiretroides en agua. El no-cianopiretroide permetrina mostró un comportamiento diferente: fue el insecticida más tóxico para la cepa de laboratorio cuando se hizo una aplicación tópica, pero el menos tóxico cuando las larvas fueron expuestas a filmes sobre papeles de filtro. En general, todos los piretroides fueron más tóxicos para las larvas criadas en laboratorio que para las provenientes del campo. La estimación de los valores de Factor de Resistencia (FR permitió establecer que la población de campo presentaba resistencia moderada o baja a permetrina, cipermetrina y ?-cihalotrina, cuando los insecticidas fueron aplicados en forma tópica. Sin embargo, no se detectó resistencia cuando se realizó la exposición en papeles de filtro tratados. No hubo correlación entre los valores de FR obtenidos por ambos métodos. Estos resultados sugieren que la población de campo de R. nu estudiada, presentaba resistencia moderada a algunos piretroides, y que la aplicación tópica es un método más apropiado que la exposición a filmes sobre papeles de filtro para cuantificar la resistencia.

  20. Effect of VATS Wedge Resection and Mediastinal Lymph Node Sampling in Eldly Patients with Early Peripheral Lung Cancer%肺楔形切除术及纵隔淋巴结采样治疗早期高龄肺癌患者的体会

    Institute of Scientific and Technical Information of China (English)

    楼伟华; 詹晓洪; 项信青; 管伟

    2012-01-01

    Background and objective The treatment for early-stage non-small cell lung cancer is primarily surgical. However, the optimal extent of mediastinal lymph node resection remains to be determined. The aim of the current study is to investigate the effect of a pulmonary wedge resection on aged patients with lung cancer. Methods A total of 15 lung cancer patients aged over 70 years were treated via video-assisted thoracoscopic surgery (VATS) wedge resection and mediastinal lymph node sampling from June 2004 to February 2008. Mediastinal lymph node sampling included stations 2R, 4R, 8 and 9 for the right-sided cancers and stations 5, 6,8 and 9 for the left-sided cancers. Results VATS wedge resection and mediastinal lymph node sampling for aged patients with peripheral lung cancer are minimally invasive treatments with a short operative time and low postoperative morbidity. The 1-year and 3-year survival rates were 100% and 86.6%, respectively. Conclusion VATS wedge resection and mediastinal lymph node sampling can be an alternative treatment for aged patients with early peripheral lung cancer.%背景与目的 治疗早期非小细胞肺癌首选手术治疗,但最佳的淋巴结清扫范围仍然不清楚.本研究旨在探讨肺楔形切除+纵隔淋巴结采样治疗在早期高龄肺癌患者中的价值.方法 2004年6月-2008年2月,共有15例70岁以上周围型肺癌患者接受胸腔镜下肺楔形切除术+纵隔淋巴结采样治疗.右侧肺癌行2R、4R、8及9组淋巴结采样,左侧肺癌行5、6、8及9组淋巴结采样.结果 早期高龄肺癌患者行胸腔镜下肺楔形切除术+淋巴结采样,手术时间短、创伤小,术后并发症少,恢复快.术后1年生存率和3年生存率分别为100%和86.6%.结论肺楔形切除术+纵隔淋巴结采样治疗早期高龄周围型肺癌患者是一种选择.

  1. 国内外老年人社会经济地位与健康关系的研究综述%Review on the Relationship between Socioeconomic Status and Health Status of the Eld-erly at Home and Abroad

    Institute of Scientific and Technical Information of China (English)

    李燕; 孙晓杰; 刘坤

    2015-01-01

    从社会经济地位的角度研究老年人健康公平的做法已得到广泛应用。通过文献回顾了国内外针对社会经济地位的测量方法及其与老年人健康的关系,发现目前还没有一个标准的针对老年人社会经济地位的测量方法,且针对发展中国家社会经济地位与老年人健康之间关系的研究较少。最后总结了老年人社会经济地位与健康关系研究领域的不足,为进一步研究我国老年人社会经济地位与健康关系提供方向和借鉴。%It is popular to study the health equity among the elderly from the viewpoint of socioeconomic status. This paper reviewed the methods of measuring the socioeconomic status of the elderly from home and abroad.The results show that there is no standard method to measure the socioeconomic status of the elderly so far and the num-ber of studies on the relationship between socioeconomic status and health status of the elderly in developing coun-tries are relatively inadequate.At last,this paper summarized the weaknesses and provided a direction and reference for the further research on the relationship between socioeconomic status and health status of the elderly in China.

  2. Thea dvance detection principle of electric-fi eld exc iat tion meth od and the developm ent of instrument’ s emsi sion prat%电场激励法超前探测原理及仪器发射部分研制

    Institute of Scientific and Technical Information of China (English)

    张伟杰; 罗建国; 胡兴志; 孙辉辉

    2016-01-01

    为了丰富和提高煤矿巷道电法超前探测的手段和效率,利用煤岩激发极化和电场同性相斥的基本性质,分析在双频激电电流作用下的约束电场的百分频率效应,得出前方围岩特性来间接判断地质异常。所研制的超前探测仪发射部分采用整流隔离稳压和模块化设计,示波器得到的发射电流波形为双频波,强度可方便调节,达到了设计要求。%In order to enrich detection means and improve the efficiency of electrical method in advanced de -tection.We can obtain the characteristics of front -surrounding rock and to indirectly determine the geolog-ical anomaly by analyzing the percent frequency effect of dual -frequency induced polarization current limiting electric field based on the basic properties of excitation polarization and isotropic electric field repel in rock . The advance detection instrument ’ s emission part adopts isolation rectification regulator and modular design . The transmitted current waveform is obtained by the oscilloscope .The current intensity can be easily adjusted without pole .The design requirements are reached .

  3. Experimental investigation of ultrasonic velocity anisotropy in magnetic fluids: Influence of grain–grain interaction

    Indian Academy of Sciences (India)

    Kruti Shah; R V Upadhyay

    2011-08-01

    Magnetic field-induced dispersion of ultrasonic velocity in a Mn0.7Zn0.3Fe2O4 fluid (applied magnetic field is perpendicular to the ultrasonic propagation vector) is determined by employing continuous wave method. The magnitude of dispersion initially decreases with increasing field, then increases and reaches a plateau at higher fields. Results indicate that the velocity anisotropy is dominated by grain–grain interactions rather than grain–field interaction. At the critical temperature, the grain–grain interaction becomes weak as the transverse component of the particle/cluster moment is larger than the longitudinal one and the system reaches saturation even at low field. These observed variations in the field-induced anisotropy are analysed by incorporating the moment distribution of particles in Tarapov’s theory (J. Magn. Magn. Mater. 39, 51 (1983)).

  4. SIMULATIONS OF MAGNETIC FIELDS IN CLUSTERS AND FILAMENTS

    Directory of Open Access Journals (Sweden)

    M. Brüggen

    2009-01-01

    Full Text Available The origin of cosmic magnetic elds outside of galaxies remains controversial. In the intracluster medium eld strengths of the order of G have been reported. Possibly the out ows of AGN have magnetised the ICM. The intergalactic magnetic eld within laments should be less polluted by magnetised out ows from active galaxies than magnetic elds in clusters. Therefore, laments may be a better laboratory to study magnetic eld ampli cation by structure formation than galaxy clusters, since they host less active galaxies. Moreover, laments are thought to contain the Warm-Hot Intergalactic Medium which represents a large fraction of the baryonic matter in the universe. Di use synchrotron emission by cosmic rays in these laments will reveal the presence of this medium. We present highly resolved cosmological adaptive mesh re nement simulations of magnetic elds in the cosmos and make predictions about the evolution and structure of magnetic elds in laments. Magnetic elds in clusters may also have their origin in AGN, whose evolution, in turn, is strongly a ected by magnetic elds. We show how the dynamics of AGN-blown bubbles, that are vital for feedback mechanisms in clusters and galaxies, is governed by ambient magnetic elds that are e ective at suppressing hydrodynamic instabilities.

  5. Coupled dilaton and electromagnetic field in cylindrically symmetric spacetime

    Indian Academy of Sciences (India)

    A Banerjee; S Chatterjee; Tanwi Ghosh

    2000-03-01

    An exact solution is obtained for coupled dilaton and electromagnetic field in a cylindrically symmetric spacetime where an axial magnetic field as well as a radial electric field both are present. Depending on the choice of the arbitrary constants our solution reduces either to dilatonic gravity with pure electric field or to that with pure magnetic field. In the first case we have a curvature singularity at a finite distance from the axis indicating the existence of the boundary of a charged cylinder which may represent the source of the electric field. For the second case we have a singularity on the axis. When the dilaton field is absent the electromagnetic field disappears in both the cases. Whereas the contrary is not true. It is further shown that light rays except for those proceeding in the radial direction are either trapped or escape to infinity depending on the magnitudes of certain constant parameters as well as on the nature of the electromagnetic field. Nature of circular geodesics is also studied in the presence of dilaton field in the cylindrically symmetric spacetime.

  6. Performance analysis of the last champion German National Team in 2014 FIFA World CupSon şampiyon Alman Milli Takımının 2014 FIFA Dünya Kupası performansının analizi

    Directory of Open Access Journals (Sweden)

    Kemal Göral

    2015-04-01

    Full Text Available This study has been carried out to analyze the National Team of Germany that had been the winner of the 2014 FIFA World Cup as the most successful team for several variables. Data analyzed in this research were gathered from the official web site of the Fédération Internationale de Football Association and the international TV channels broadcasting the competitions. Technic parameters such as shots, accurate shots, corner kicks, offsides, accurate and non-accurate passes, and variances of goals scored in the matches were analyzed according to the goal times and areas. Statistics were registered through SPSS program and the percentages and frequencies were calculated. Germany National Team, the most successful team of the 2014 FIFA World Cup has scored 18 goals with an average of 2.57 goals per match without conceding a goal in the first periods . This statistic is similar to all previous tournaments. All along the tournament, most (%74 of the first 11 players of the teams starting the matches were consisted of players from Bundesliga. Accurate shots’ percentage has been determined as %73.2, the average percentage of possessing the ball as %56.71 and also the percentage of accurate passes as %81.9 out of 4990 pass attempts. As a conclusion, to achieve great results in top level tournaments such as FIFA World Cup, there are important performance indicators to take into consideration. Regarding the success of the German National Soccer Team in the tournament, it is argued that especially possessing the ball, shooting and passing accurately with a high rate along with other performance indicators are the base elements of success. ÖzetBu çalışma, 2014 FIFA Dünya Kupasında ilk sırada yer alarak en başarılı takım olan Almanya Milli futbol takımının farklı değişkenler açısından analiz edilmesi amacıyla yapılmıştır. Araştırma verileri, müsabakaları yayımlayan uluslararası TV kanalından ve FIFA (F

  7. PISA Sonuçları Açısından Ülkelerin Eğitimli Olmayan Nüfus Yapısının Analizi: Uluslararası Bir Perspektif An Analysis Of Countries’ Uneducated Population In Terms Of PISA Results: An International Perspective

    Directory of Open Access Journals (Sweden)

    İlknur MAYA

    2013-09-01

    highestachievement in PISA. Furthermore, the population of illiterate youthand adults is also lower in countries with high achievement in PISAthan in countries with low achievement. Eğitim, bir ülkenin ekonomik yönden gelişmesinde ve kalkınmasında olduğu kadar uluslararası alanda sürdürülebilir bir rekabet gücü oluşturmasında önemli bir etkendir. Birçok ülkedeki çalışmalar, özelde eğitimin ve genelde insan sermayesini geliştirmenin ülkenin büyüme oranlarının ve kişi başına gelir düzeyindeki değişmelerin açıklanmasında önemli bir etken olduğunu desteklemektedir. Bu nedenle her ülkenin eğitime gereken yatırımı yapması, eğitimde kaliteyi sağlaması ve eğitim sorunlarının farkında olması önem taşımaktadır. Okul dışında kalan çocuklar ve okuryazar olmayan genç ve yetişkin nüfus, gelişmekte olan birçok ülke için önemli eğitim sorunlarını oluşturmaktadır. Kaldı ki toplumun eğitim düzeyi kalkınmayı olduğu kadar, eğitim alanında yapılan uluslararası sınavlardaki başarıyı da etkilemektedir. Bu çerçevede, okul dışında kalan çocuk nüfusu ve okuryazar olmayan genç ve yetişkin nüfus yapısının eğitime ilişkin uluslararası politika belgelerinde yer alan önemli göstergeler olduğu görülmektedir. Bu araştırmada, Uluslararası Öğrenci Değerlendirme Programı olan PISA (Programme for International Student Assessment sonuçları açısından ülkelerin eğitimli olmayan çocuk, genç ve yetişkin nüfus yapısının karşılaştırmalı olarak analiz edilmesi amaçlanmaktadır. Araştırmada kullanılan yöntem, doküman incelemesidir. Araştırma evrenini, PISA (2009 sınavına katılan 34’ü OECD üyesi olmak üzere 65 ülke oluşturmaktadır. Örneklemi, PISA sonuçlarında en yüksek (10 ve en düşük (10 başarı gösteren toplam 20 ülke oluşturmaktadır. Araştırmada, en son verilere ulaşılmak istendiğinden ilgili veriler OECD (2012, PISA (2009 ve UIS (2011 istatistiklerinden

  8. Structural, dynamical, and transport properties of the hydrated halides: How do At− bulk properties compare with those of the other halides, from F− to I−?

    OpenAIRE

    Réal, Florent; Severo Pereira Gomes, Andre; Guerrero Martínez, Yansel Omar; Galland, Nicolas; Vallet, Valérie; Masella, Michel; Ayed, Tarah

    2016-01-01

    International audience The properties of halides from the lightest, uoride (F−), to the heaviest, astatide (At−), have been studied in water using a polarizable force- eld approach based on molecular dynamics (MD) simulations at the 10 ns scale. The selected force- eld explicitly treats the cooperativity within the halide-water hydrogen bond networks. The force- eld parameters have been adjusted to ab initio data on anion/water clusters computed at the relativistic Möller-Plesset second-o...

  9. Connections between quantum chromodynamics and condensed matter physics

    Indian Academy of Sciences (India)

    Shailesh Chandrasekharan

    2003-11-01

    Features of QCD can be seen qualitatively in certain condensed matter systems. Recently some of the analyses that originated in condensed matter physics have found applications in QCD. Using examples we discuss some of the connections between the two fields and show how progress can be made by exploiting this connection. Some of the challenges that remain in the two fields are quite similar. We argue that recent algorithmic developments call for optimism in both fields.

  10. 福井高専環境都市工学科における建築系カリキュラム導入によるデザインマインド育成の取り組み

    OpenAIRE

    江本, 晃美; 廣部, 英一; 武井, 幸久; 山田, 幹雄; 阿部, 孝弘; 吉田, 雅穂; 奥村, 充司; 辻子, 裕二; 辻野, 和彦; 田安, 正茂; 香月, 壮亮

    2013-01-01

    In Dept. of Civil Engineering, we added the contents of the Architecture fi eld to civil engineering towards an engineer's training currently called for by today's construction industry. Although this department was a subject of study for studying only the civil engineering fi eld, it changed to take inthe study about an environmental arena in 1993. And the Architecture fi eld was taken in order to correspond to the talented-people image for which the present construction industry asks this t...

  11. Quantitative Measures of Anthropogenic Noise on Harbor Porpoises: Testing the Reliability of Acoustic Tag Recordings

    DEFF Research Database (Denmark)

    Wisniewska, Danuta Maria; Teilmann, Jonas; Hermannsen, Line;

    2016-01-01

    In recent years, several sound and movement recording tags have been developed to sample the acoustic fi eld experienced by cetaceans and their reactions to it. However, little is known about how tag placement and an animal’s orientation in the sound fi eld affect the reliability of on-animal rec......In recent years, several sound and movement recording tags have been developed to sample the acoustic fi eld experienced by cetaceans and their reactions to it. However, little is known about how tag placement and an animal’s orientation in the sound fi eld affect the reliability of on...

  12. Bilingual Dictionaries for Communication in the Domain of Economics: Function-Based Translation Dictionaries

    DEFF Research Database (Denmark)

    Nielsen, Sandro

    2015-01-01

    With their focus on terms, bilingual dictionaries are important tools for translating texts on economics. The most common type is the multi-fi eld dictionary covering several related subject fi elds; however, multi-fi eld dictionaries treat one or few fi elds extensively thereby neglecting other fi...... varieties such as British, American and international English to indicate syntactic options and restrictions on language use. Secondly, translators need to know the meaning of domain-specifi c terms to properly understand the differences in the structure of the domains in the cultures involved. Finally...

  13. Electric Field Structures in Thin Films: Formation and Properties

    DEFF Research Database (Denmark)

    Cassidy, Andrew; Plekan, Oksana; Balog, Richard;

    2014-01-01

    by combining layers of different spontelectric materials. This is demonstrated using the spontelectric materials nitrous oxide, toluene, isoprene, isopentane, and CF2Cl2. These yield a variety of tailored electric field structures, with individual layers harboring fields between 107 and 108 V/m. Fields may......A newly discovered class of molecular materials, so-called “spontelectrics”, display spontaneous electric fields. Here we show that the novel properties of spontelectrics can be used to create composite spontelectrics, illustrating how electric fields in solid films may be structured on the nanoscale...

  14. Economic Load Dispatch Using Grey Wolf Optimization

    Directory of Open Access Journals (Sweden)

    Dr.Sudhir Sharma

    2015-04-01

    Full Text Available This paper presents grey wolf optimization (GWO to solve convex economic load dispatch (ELD problem. Grey Wolf Optimization (GWO is a new meta-heuristic inspired by grey wolves. The leadership hierarchy and hunting mechanism of the grey wolves is mimicked in GWO. The objective of ELD problem is to minimize the total generation cost while fulfilling the different constraints, when the required load of power system is being supplied. The proposed technique is implemented on two different test systems for solving the ELD with various load demands. To show the effectiveness of GWO to solve ELD problem results were compared with other existing techniques.

  15. Quantum spin-glass transition in the two-dimensional electron gas

    Indian Academy of Sciences (India)

    Subir Sachdev

    2002-02-01

    We discuss the possibility of spin-glass order in the vicinity of the unexpected metallic state of the two-dimensional electron gas in zero applied magnetic field. An average ferromagnetic moment may also be present, and the spin-glass order then resides in the plane orthogonal to the ferromagnetic moment. We argue that a quantum transition involving the destruction of the spin-glass order in an applied in-plane magnetic field offers a natural explanation of some features of recent magnetoconductance measurements. We present a quantum field theory for such a transition and compute its mean field properties.

  16. Career concerns incentives: An experimental test

    DEFF Research Database (Denmark)

    Koch, Alexander; Morgenstern, Albrecht; Raab, Philippe

    2009-01-01

    Holmström's (1982/99) career concerns model has become a workhorse for analyzing agency issues in many elds. The underlying signal jamming argument requires players to use information in a Bayesian way, which is difficult to directly test with eld data: typically little is known about the informa......Holmström's (1982/99) career concerns model has become a workhorse for analyzing agency issues in many elds. The underlying signal jamming argument requires players to use information in a Bayesian way, which is difficult to directly test with eld data: typically little is known about...

  17. Electron transport in wurtzite InN

    Indian Academy of Sciences (India)

    F M Abou El-Ela; B M El-Assy

    2012-07-01

    Using ensemble Monte Carlo simulation technique, we have calculated the transport properties of InN such as the drift velocity, the drift mobility, the average electron, energy relaxation times and momentum relaxation times at high electric field. The scattering mechanisms included are polar optical phonon, ionized impurity, acoustic phonon and intervalley phonon. It is found that the maximum peak velocity only occurs when the electric field is increased to a value above a certain critical field. This critical field is strongly dependent on InN parameters. The steady-state transport parameters are in fair agreement with other recent calculations.

  18. 微粒化非诺贝特和洛代他汀对老年人低高密度脂蛋白胆固醇(HDL-ch)和高低密度脂蛋白(LDL-ch)的疗效比较%A Comparison of the Therapeutic Effects of Comicromised Fenofibrate with Lovastatin in the Treatment of Eldly with Low High-density Lipoprotein(HDL) Cholesterol and Elevated Low-density Lipoprotein(LDL) Cholesterol

    Institute of Scientific and Technical Information of China (English)

    施行舟; 叶志荣

    2002-01-01

    为了比较微粒化非诺贝特和洛伐他汀对低HDL-ch和高LDL -ch的疗效,将80例低HDL伴高LDL的老年唤者随机分为非诺贝特组和洛代他汀组,每组各40例,分别予服用微粒化非诺贝特和洛代他汀,疗程为12周.结果发现非诺贝特组于治疗后8周即可有显著的升高HDL-ch,且疗效随疗程的增加而增加,而洛伐他汀组仅有轻度升高HDL-ch作用,尚未达到显著性水平,二组疗效相比,具有显著性意义(P=0.0271).非洛贝特组和洛伐他汀组于治疗后4周都可以显著降低LDL(P<0.05),且疗效都随着疗程的增加而增加,二组疗效相比,尚未达到显著性水平(P=0.0785).因此,微粒化非诺贝特可升高老年患者的HDL-ch,降低LDL-ch水平,而洛伐他门仅能够显著降低患者的LDL-ch水平,对于同时伴有低HDL-ch和高LDL-ch老年患者,应首先考虑选择非诺贝特进行降脂治疗.

  19. Quantum Field Theory in de Sitter spacetime

    CERN Document Server

    So, Ashaq Hussain; Sibuea, Marlina Rosalinda; Akhoon, Shabir Ahmad; Khanday, Bilal Nisar; Majeed, Sajad Ul; Rather, Asloob Ahmad; Nahvi, Ishaq

    2013-01-01

    In this paper we will analyse quantum ?eld theory on de Sitter space- time. We will ?rst analyse a general scalar and vector ?eld theory on de Sitter spacetime. This is done by ?rst calculating these propagators on four-Sphere and then analytically continuing it to de Sitter spacetime.

  20. What Our Hands Say: Exploring Gesture Use in Subgroups of Children with Language Delay

    Science.gov (United States)

    O'Neill, Hilary; Chiat, Shula

    2015-01-01

    Purpose: The aim of this study was to investigate whether children with receptive-expressive language delay (R/ELD) and expressive-only language delay (ELD) differ in their use of gesture; to examine relationships between their use of gesture, symbolic comprehension, and language; to consider implications for assessment and for the nature of…

  1.  Topological quantum field theory: 20 years later

    DEFF Research Database (Denmark)

    Reshetikhin, Nicolai

    2008-01-01

    This article is an overview of the developments in topological quantum field theory, and, in particular on the progress in the Chern–Simons theory.......This article is an overview of the developments in topological quantum field theory, and, in particular on the progress in the Chern–Simons theory....

  2. Final Report. Grant DOE DE-FG02-04ER54768

    Energy Technology Data Exchange (ETDEWEB)

    Betti, Riccardo [Univ. of Rochester, NY (United States)

    2016-01-11

    The magnetized spherical implosion campaign funded by this grant is summarized in this progress report. The main goal of this grant was to improve the seed eld generator MIFEDS (Magneto- Inertial Fusion Energy Delivery System) on the OMEGA laser to enable experiments at high elds (> 8 T) and to carry out magnetized spherical implosion experiments to study the e ect of magnetic elds on the fusion yield. New experiments were carried out in the last budget period to study the e ect of higher elds and shaped laser pulses. These new experiments improved the magnetized implosion database and allowed us to improve the con dence of our conclusions with respect to the e ect of magnetic elds on implosion performance. The main conclusion is that adding magnetic eld leads to a 30% higher neutron yield, but using seed magnetic eld higher than 8 T does not further increase the neutron yield. A further conclusion is that the yield enhancement due to the magnetic eld is approximately independent of the laser pulse shape.

  3. Comparison of the effects of eldecalcitol with either raloxifene or bisphosphonate on serum tartrate resistant acid phosphatase-5b, a bone resorption marker, in postmenopausal osteoporosis

    Science.gov (United States)

    Takada, Junichi; Ikeda, Satoshi; Kusanagi, Tetsuya; Mizuno, Satoshi; Wada, Hiroshi; Iba, Kousuke; Yoshizaki, Takashi; Yamashita, Toshihiko

    2016-01-01

    Summary Objective This study analyzes whether concomitant raloxifene (RLX) or bisphosphonates (BP) plus eldecalcitol (ELD) has excessive suppressive effects on a bone resorption marker during the first 6 months of treatment in postmenopausal women in real-world setting. Methods 285 postmenopausal osteoporotic patients who had been treated with RLX or BP plus ELD were evaluated the bone resorption marker, serum tartrate resistant acid phosphatase-5b (TRACP-5b), during the first 6 months of treatment. Results In drug-naïve group (not received osteoporosis medications before the administration, n=70), the concomitant RLX or BP with ELD significantly decreased levels of TRACP-5b without severe suppression. In vitamin D switch group [RLX or BP plus alfacalcidol (ALF) and then switched to RLX or BP plus ELD, n=215], the replacing ALF with ELD further and significantly decreased TRACP-5b and tertile analyses based on baseline values were significantly decreased far more in the highest, compared with the lowest tertile in the ELD+RLX and ELD+BP groups. Conclusion ELD combined with RLX or BP administered for 6 months to postmenopausal women with osteoporosis who were drug-naïve or who had switched medications significantly reduced and maintained TRACP-5b values within the reference range. PMID:27252739

  4. Automatic crop row detection from UAV images

    DEFF Research Database (Denmark)

    Midtiby, Henrik; Rasmussen, Jesper

    Images from Unmanned Aerial Vehicles can provide information about the weed distribution in fields. A direct way is to quantify the amount of vegetation present in different areas of the field. The limitation of this approach is that it includes both crops and weeds in the reported num- bers. To get...

  5. Corporate Social Responsibility : Management and Methods

    OpenAIRE

    Dobers, Peter

    2009-01-01

    This article gives an overview of recent Corporate Social Responsibility (CSR) handbooks to illustrate that the fi eld is of immediate interest and relevance for scholars and practitio- ners. It gives a background to CSR and how the fi eld relates to management and methods and introduces the four articles of this special issue.

  6. Physicians' experiences with end-of-life decision-making: survey in 6 European countries and Australia

    DEFF Research Database (Denmark)

    Löfmark, Rurik; Nilstun, Tore; Cartwright, Colleen;

    2008-01-01

    a request for hastening death differed between 34% and 71%, and intentionally hastening death on the explicit request of a patient between 1% and 56%. CONCLUSION: There are differences between countries in experiences with ELDs, in willingness to perform ELDs and in receiving requests for euthanasia...

  7. Collective flow in relativistic heavy-ion collisions

    Indian Academy of Sciences (India)

    R S Bhalerao

    2003-11-01

    A brief introduction is given to the field of collective flow, currently being investigated experimentally at the Relativistic Heavy-Ion Collider, Brookhaven National Laboratory. It is followed by an outline of the work that I have been doing in this field, in collaboration with Nicolas Borghini and Jean-Yves Ollitrault.

  8. Quantitative Measures of Anthropogenic Noise on Harbor Porpoises

    DEFF Research Database (Denmark)

    Wisniewska, Danuta Maria; Teilmann, Jonas; Hermannsen, Line;

    2016-01-01

    In recent years, several sound and movement recording tags have been developed to sample the acoustic fi eld experienced by cetaceans and their reactions to it. However, little is known about how tag placement and an animal’s orientation in the sound fi eld affect the reliability of on-animal rec...

  9. Environmental liability and nature protection areas Will the EU Environmental Liability Directive actually lead to the restoration of damaged natural resources?

    NARCIS (Netherlands)

    Broek, G.M. van den

    2009-01-01

    The EU Environmental Liability Directive (ELD) requires remedial measures when environmental damage to protected species and natural habitats occurs. Thus, the ELD offers a minimum level of protection to natural resources in its Article 2. In order to finance the restoration of environmental damage

  10. Using Sentence Frames to Develop Academic Vocabulary for English Learners

    Science.gov (United States)

    Donnelly, Whitney Bray; Roe, Christopher J.

    2010-01-01

    Often, English-language development (ELD) is taught during a dedicated time of the school day. There is often a mismatch between the content of ELD and the lessons taught during core instruction provided during the remainder of the day. During core instruction, teachers use specially designed academic instruction in English strategies to ensure…

  11. Incentives and Social Relations in the Workplace

    NARCIS (Netherlands)

    J. Sol (Joeri)

    2011-01-01

    textabstractIn this thesis, I study how organizations can incentivize a group of individuals, both in theory and by conducting …eld experiments. The …eld experiments introduce short-term team incentives in a randomly selected sample of stores that belong to a single Dutch retail chain of 128 stores.

  12. Probing the anisotropic vortex lattice in the Fe-based superconductor KFe2As2 using small angle neutron scattering

    Energy Technology Data Exchange (ETDEWEB)

    Debeer-Schmitt, Lisa M [ORNL; Dewhurst, Charles [Institut Laue-Langevin (ILL); Kikuchi, Hiroko [Ochanomizu University, Japan; Cameron, Alistair [University of Birmingham, The, Birmingham, United Kingdom; Heslop, Richard [University of Birmingham, The, Birmingham, United Kingdom; Forgan, E. M. [University of Birmingham, The, Birmingham, United Kingdom; Bowell, Charlotte [University of Cambridge; White, Jonathon [Laboratory for Neutron Scattering ETHZ & PSI; Gavilano, Jorge [ETH Zurich, Switzerland

    2013-01-01

    Using small angle neutron scattering, the anisotropy of the magnetic vortex lattice (VL), in the heavily hole-doped pnictide superconductor, KFe2As2, was studied. Well-ordered VL scattering patterns were measured with elds applied in directions between B k c and the basal plane, rotating either towards [100] or [110]. Slightly distorted hexagonal patterns were observed when B k c. However, the scattering pattern distorted strongly as the eld was rotated away from the c- axis. At low eld, the arrangement of vortices is strongly aected by the anisotropy of penetration depth in the plane perpendicular to the eld. By tting the distortion with the anisotropic London model, we obtained an estimate of 3:4 for the anisotropy factor, , between the in-plane and c-axis penetration depths at the lowest temperature studied. The results further reveal VL phase transitions as a function of eld direction. We discuss these transitions using the "Hairy Ball" theorem.

  13. Some cool considerations of external lumbar drainage during its widespread application in neurosurgical practice:a long way to go

    Institute of Scientific and Technical Information of China (English)

    Guichen Li; Yang Zhang; Jinchuan Zhao; Zhiguo Han; Xiaobo Zhu; Kun Hou

    2016-01-01

    External lumbar drainage (ELD) has gained wide popularity in neurosurgical practice since its’ first introduction by F. Vourc’h in 1963. It manifests encouraging prospects in control of refractory intracranial hypertension, prevention of complications secondary to aneurysmal subarachnoid hemorrhage, prediction of shunt respondency in normal pressure hydrocephalus, management of cerebrospinal fluid (CSF) leakage, and application in bacterial meningitis and ventriculitis. But many questions on the efficacy and safety of ELD are remained to be answered by future studies. CSF overdrainage and ELD-related meningitis are the two most common and fatal complications due to inappropriate usage of ELD. Randomized control ed trials are badly in need to more safely and rational y guide the clinical application of ELD.

  14. Higgs-Like Particle due to Revised Quantum Electrodynamics

    Directory of Open Access Journals (Sweden)

    Lehnert B.

    2013-07-01

    Full Text Available A Higgs-like particle having zero net electric charge, zero spin, and a nonzero rest mass can be deduced from an earlier elaborated revised quantum electrodynamical theory which is based on linear symmetry breaking through a nonzero electric field divergence in the vacuum state. This special particle is obtained from a composite longitudinal solution based on a zero magnetic field strength and on a nonzero divergence but a vanishing curl of the electric field strength. The present theory further differs from that of the nonlinear spontaneously broken symmetry by Higgs, in which elementary particles obtain their masses through an interaction with the Higgs field. An experimental proof of the basic features of a Higgs-like particle thus supports the present theory, but does not for certain confirm the process which would generate massive particles through a Higgs field

  15. Treatment with eldecalcitol positively affects mineralization, microdamage, and collagen crosslinks in primate bone.

    Science.gov (United States)

    Saito, Mitsuru; Grynpas, Marc D; Burr, David B; Allen, Matthew R; Smith, Susan Y; Doyle, Nancy; Amizuka, Norio; Hasegawa, Tomoka; Kida, Yoshikuni; Marumo, Keishi; Saito, Hitoshi

    2015-04-01

    Eldecalcitol (ELD), an active form of vitamin D analog approved for the treatment of osteoporosis in Japan, increases lumbar spine bone mineral density (BMD), suppresses bone turnover markers, and reduces fracture risk in patients with osteoporosis. We have previously reported that treatment with ELD for 6 months improved the mechanical properties of the lumbar spine in ovariectomized (OVX) cynomolgus monkeys. ELD treatment increased lumbar BMD, suppressed bone turnover markers, and reduced histomorphometric parameters of both bone formation and resorption in vertebral trabecular bone. In this study, we elucidated the effects of ELD on bone quality (namely, mineralization, microarchitecture, microdamage, and bone collagen crosslinks) in OVX cynomolgus monkeys in comparison with OVX-vehicle control monkeys. Density fractionation of bone powder prepared from lumbar vertebrae revealed that ELD treatment shifted the distribution profile of bone mineralization to a higher density, and backscattered electron microscopic imaging showed improved trabecular bone connectivity in the ELD-treated groups. Higher doses of ELD more significantly reduced the amount of microdamage compared to OVX-vehicle controls. The fractionated bone powder samples were divided according to their density, and analyzed for collagen crosslinks. Enzymatic crosslinks were higher in both the high-density (≥2.0 mg/mL) and low-density (mineralization, but prevented non-enzymatic reaction of collagen crosslinks and accumulation of bone microdamage. Bone anti-resorptive agents such as bisphosphonates slow down bone remodeling so that bone mineralization, bone microdamage, and non-enzymatic collagen crosslinks all increase. Bone anabolic agents such as parathyroid hormone decrease bone mineralization and bone microdamage by stimulating bone remodeling. ELD did not fit into either category. Histological analysis indicated that the ELD treatment strongly suppressed bone resorption by reducing the number of

  16. Liselerde Madde Bağımlılığı – Mevcut Durum ve Önerilere İlişkin Okul Müdürleri ve Öğretmenlerin Bakış Açıları Opinions of Schoolmaster and Teachers on Drug Addiction – Present Situation and on Advices in Secondary Schools

    Directory of Open Access Journals (Sweden)

    Yasemin KUBANÇ

    2013-03-01

    Full Text Available Some people are pushed to use drug in the society due to various causes. The reason why these causes should be important and paid attention to is because of the destructive and devastating effect thatdrug use has on people and on these people’s environment. Thissituation has become a problem for societies to struggle with. Use ofdrugs is an important problem within Turkish Education System justlike throughout the world.In this research, school principals and guidance counselors whowork in a high school in Elazığ was met and determining the opinionson the matter of drug use of students was tried so to determine thepresent situation regarding drug use in educational establishments. Inthis context, 10 open ended questions were directed to principals andguidance counselors. In the findings obtained with the analysis of thedata it was determined that the reason for the students to start drugs isdue to familial problems. Friend group, environment, media and othereffective factors are also included. In schools mostly marijuana, heroinand ecstasy are used and students can get their hands on drugs fromoutside of school, internet cafes and inside of school. No significantdifference was found between male and female students regarding druguse. Family, education and state policies stand out as prominentsolutions. Toplum içinde bazı kişiler, çeşitli nedenlerden dolayı uyuşturucu kullanmaya itilirler. Bu nedenlerin önemli hale gelmesini ve dikkate alınmasını gerekli kılan husus, uyuşturucu kullanımının kişiler ve kişilerin yakın çevresinde bulunanlar üzerinde bıraktığı yıkıcı ve yok edici etkidir. Bu durum, toplumlar için baş etmek zorunda oldukları bir sorun halini almıştır. Uyuşturucu madde kullanımı bugün tüm dünyada olduğu gibi Türk Eğitim Sistemi içinde de önemli bir sorundur.Bu araştırmada, eğitim kurumlarında uyuşturucu kullanımına ilişkin mevcut durumun tespit edilmesi amacıyla Elazığ ilinde

  17. Edebi Metnin ve Yaratıcılığın Kaynağına Ulaşan Yol: Psikanalitik Edebiyat Eleştirisi The Way That Reaches the Source of Literary Text and Creativity: Psychoanalytic Literary Critism

    Directory of Open Access Journals (Sweden)

    Ferda ATLI

    2012-09-01

    Full Text Available Literature and psychology are disciplines that should be interacting with each other as they regard human and human nature as their fields of study. Beside the contributions of literature to psychology, the contributions of psychology to literature are in great extent. Today, pyschology acts as scrip with respect to forming and analyzing of characters mentioned in literal texts. Psychoanalysis is an important sub-field of literature as it particularly tries to define the human subconscious and the process of creativity in various ways. The fact that psychoanalysis is applied to artists by the creator of it, Sigmund Freud and later to works of art by his followers, has given rise to the collaboration of psychoanalysis and literature. Scientists such as Freud, Adler, Jung and Lacan, who attempt to bring together psychoanalysis and literature, have tried to obtain better results by developing different methods. By means of these methods developed by scientists dealing with psychoanalysis, literature commentators acquired different dimension in the investigaton of literal text by developing the method of Psychoanalytic Literary Review. Based on the life story of artist or referring features of the characters in literal text, these comments gained multi-layered to texts and helped readers to shed light on inner world of literal text and writer. The aim of this study is to give information about the five important representatives of the psychoanalytic literary criticism and to give examples from the Turkish literature. Edebiyat ve psikoloji insan ve insanın hallerini inceleme alanı olarak kabul etmeleri dolayısıyla birbirlerinden beslenmesi gereken bilim dallarıdır. Edebiyatın psikolojiye katkılarının yanında psikolojinin edebiyata katkıları önemli boyutlardadır. Günümüzde edebi metinlerde işlenen karakterlerin oluşturulması ve tahlil edilmesi hususunda psikoloji pusula mahiyeti göstermektedir. Özellikle insanın bilin

  18. San Remo Konferansı’nda İngiltere’nin Ermeni Politikası (18-26 Nisan 1920 Britain’s Armenian Policy on San Remo Conference (18-26 April 1920

    Directory of Open Access Journals (Sweden)

    Evren KÜÇÜK

    2012-09-01

    Ahoranian Osmanlı Devleti’nden toprak talebinde bulunmaya devam etmişlerdir. Bu taleplerin gerçekleşmesi için Ermeni varlığını koruyacak, geliştirecek ve finanse edecek bir gücün mandaterliğine ihtiyaç vardı. Bu durum konferans esnasında İngiltere’nin de diplomatik manevralar gerçekleştirmesine yol açmıştır. Özellikle İngiltere için Mezopotamya bölgesi önemli olduğundan Anadolu’daki mandaterlik görevi ABD’ye bırakılmaya çalışılmıştır. ABD’nin bu teklifi kabul etmemesi durumunda ise Türk-Ermeni sınırının ABD Başkanı Wilson hakemliğinde çözülmesi öngörülmüştür. San Remo’da bulunan diğer devlet başkanları ise Ermenistan mandaterliğini alma sorumluluğundan rahatsızlık duyup ne mali ne de askeri yardımda bulunamayacaklarını açık bir dille ifade etmişlerdir. Demografik bakımdan sağlam gerekçelere dayanmayan ve uygulanabilirlik ilkesine ters düşen bu taleplerin Mustafa Kemal Paşa önderliğindeki hareket tarafından kabul edilmesi beklenemezdi. Ayrıca Doğu Cephesi’nde elde edilen askeri zaferler, İngiltere’nin Ermenistan politikasının iflasına neden olduğu gibi ABD Başkanı Wilson’un da Sevr Antlaşması’nın 89. maddesine atfen hazırladığı Türk-Ermeni sınırı hakkındaki 22 Kasım 1920 tarihli raporunu da devre dışı bırakmıştır. Varolmak için verilen bu savaş, sonunda, İtilâf blokunun tamamen parçalanıp Fransa ve İtalya’nın milli mücadele hareketine destek vermesiyle sonuçlandığı gibi hem Lloyd George hükümetinin hem de Osmanlı imparatorluk sisteminin sonunu getirmiştir.

  19. Expectations of today’s accounting education according to Turkey Accounting / Financial Reporting StandartsTürkiye Muhasebe/Finansal Raporlama Standartlarına göre günümüz muhasebe eğitiminden beklentiler

    Directory of Open Access Journals (Sweden)

    Haluk Duman

    2016-01-01

    Full Text Available With globalization, not only limit is lifted between the countries, but also capital and information barriers are lifted. So, financial information is needed for making performance assessment and transferring the scarce resources to efficient and effective field. But, this financial information does not allow the analysis and making comparisons wherefore different information are obtained from country to country as a result of the application of different accounting policies. International financial statements which is unique and prepared by a common measure can be used as a basic guidance in the decision-making by existing and potential investors. Issuing TMS/TFRS set which is fully compliant with IAS and IFRS, the application has been made mandatory for all businesses in our country under the new TTK (Turkish Commercial Code which came into force on January 1, 2013. In this respect, all companies will start preparing financial statements by TMS/TFRS. There are important differences between Turkish tax legislation-the accounting practices of public notification and TMS/TFRS. The accounting training is crucial for minimizing the difference between the basic tax legislation and TMS/TFRS and meeting the expectations of business and the environment by qualified human resources which is most important resource for practising TMS/TFRS effectively and fully on the company.   Özet Küreselleşme ile ülkeler arasındaki sınırlar kalkmamış, aynı zamanda emek, sermaye ve bilgi önündeki engellerde kalkmıştır. Bu bağlamda kıt kaynakların etkin ve verimli alana aktarılması, performans değerlendirmelerinin yapılabilmesi için mali bilgilere ihtiyaç duyulmaktadır. Bu bağlamda ülkeden ülkeye farklı muhasebe politikaları uygulamaları sonucunda elde edilen mali bilgiler analiz ve karşılaştırma yapılmasına izin vermemektedir. Uluslararası tek ve ortak bir ölçüte göre hazırlanmış mali tablolar mevcut ve potansiyel yat

  20. Kent Modelleri ve Sürdürülebilir Kent Yönetimi Models of the City and the Sustainable Urban Management

    Directory of Open Access Journals (Sweden)

    Hüseyin DURGUTER

    2012-09-01

    ından itibaren ekonomik, sosyal, politik etmenlerden dolayı etkilenmiş ve değişime uğramıştır. Günümüz bilgi ve enformasyon çağında ise kentler; insanoğluna yetersiz gelmekte, ihtiyaçlarını ve güvenliğini sağlayamamaktadır. Kentlerin geçmiş nesillerden devralınıp, bugünkü sakinlerine kaliteli bir yaşam tarzı sunmaları ve gelecek nesillere de kullanılabilir şekilde teslim edilmesi önem arzetmektedir. Bu ise kentlerin inşasının ve yönetiminin insan ve çevre odaklı olmak üzere köklü değişim ve dönüşümünü gerektirir. Mevcut bulunan şehirler insanların gündelik ve sosyal ihtiyaçlarını karşılamaktan uzak kalmaktadır. Her şeyin insanın kaliteli bir yaşam sürmesi için kurgulandığı günümüz dünyasında kent şekilleri de değişmektedir. Bu durum ise gelişen ve dönüşen dünyamızda yeni şehir anlayışları ve modelleri ortaya çıkarmıştır. Bilgi ve enformasyon çağının gereklerine uygun ve ihtiyaçlarını karşılayan yeni kent modelleri geliştirmiştir. Varolan kentler ya ihtiyaca cevap verememekte, ya eskimekte ya da insanların hayatını kargaşaya sürüklemektedir. Kentler dönüşüm projeleriyle yaşanabilir mekanlar haline getirilmeye, kaliteli bir yaşam imkanı verebilecek duruma getirilmeye çalışılmaktadır. Türkiye’ de belediyelerin büyük bir bölümü küçük ölçekli ve kırsal karakterlidir. Bu yerleşim birimlerinin kırsal özelliklerinden kurtulamadığı, dolayısıyla her belediye biriminin gerçek anlamda “kent” olarak kabul edilemeyeceği vurgulanmaktadır. Sürdürülebilir kent yönetimi açısından Belediye yönetimlerinin, Sivil Toplum Kuruluşları aracılığı ile kent insanını karar sürecine katmaları hem katılımcılık ilkesinin gerçekleşmesine, hem de doğru kararlar alma şansına sahip olunmasına katkı sağlayacaktır. Bununla birlikte yönetimler, alınan kararların uygulanması aşamasında gerekli destekleri daha başlangıçta elde etme

  1. Üniversite Öğrencilerinin ‘‘Topluluk Karşısında Konuşma’’ İle İlgili Çeşitli Görüşleri Some Opinions of the University Students Related to “Giving a Speech in Front of Public”

    Directory of Open Access Journals (Sweden)

    Akif ARSLAN

    2012-09-01

    örüşlerini belirlemektir. Bu amaçla Ağrı İbrahim Çeçen Üniversitesi’nin değişik bölümlerinde eğitimlerine devam eden 500 üniversite öğrencisine araştırmacı tarafından geliştirilen anket uygulanarak araştırmanın verileri elde edilmiştir. Çalışmanın sonunda öğrencilerin büyük çoğunluğunun topluluk karşısında konuşmak istediği fakat Türkçeye hâkim olunmaması, Türkçenin sonradan öğrenilmesi, yanlış veya eksik bilgi verme korkusu, dinleyicilerin alaycı davranışları, özgüven eksikliği, utangaç mizaç, diksiyon problemleri, anlaşılmama endişesi gibi çeşitli sebeplerden dolayı ellerine fırsat geçse bile topluluk karşısında konuşmadıkları veya topluluk karşısında konuşmayı gerektiren görevlerden kaçındıkları belirlenmiştir. Araştırma kapsamındaki öğrencilerin sınıfta çoğunlukla başarılı öğrencilere söz verilmesi, topluluk karşısında konuşma etkinliklerinin resmî bayramlardaki birkaç konuşmadan ibaret olması, sınıfların kalabalık olması, öğrencilere yeterince söz hakkı verilmemesi ve daha çok öğretmenlerin konuşması, öğrencilerin öğretmenlerin tepkisinden çekinmeleri, çeşitli merkezi sınavlara odaklanıldığı için konuşma becerisinin ihmal edilmesi gibi bazı sebeplerden dolayı, eğitim kurumlarının bu beceriyi yeterince geliştiremediği düşüncesinde oldukları da tespit edilmiştir. Çalışmada, topluluk karşısında sinirlerin gerilmesi, aşırı derecede heyecanlanma, eleştirilmekten korkma, söyleyeceklerini unutma, bayılma endişesi gibi psikolojik ve terleme, titreme, yüzün kızarması, baş ağrısı, kekeleme, sesin titremesi, kalp atışlarının hızlanması, kelimeleri yutma gibi fiziki özellikler ortaya konulduktan sonra, araştırma kapsamındaki öğrencilerin topluluk karşısında yaşanan heyecanın azaltılması için neler yapılması gerektiğine yönelik çeşitli önerilerine de yer verilmiştir.

  2. Land use planning of paddy field using geographic information system and land evaluation in West Lombok, Indonesia

    Directory of Open Access Journals (Sweden)

    Widiatmaka .

    2014-06-01

    Full Text Available Planning analysis to increase rice production either through intensiḀcation of existing paddy Ḁeld area or ex-tensiḀcation in potential land area was conducted in West Lombok Regency, West Nusa Tenggara Province, Indonesia. Existing paddy Ḁeld was delineated using high-resolution data from IKONOS imagery of 2012. Land use and land cover outside existing paddy Ḁeld were interpreted using SPOT-5 imagery of 2012. ἀe Automated Land Evaluation System (ALES was used for land suitability analysis for paddy. ἀe results are interpreted in terms of the potential of paddy Ḁeld intensiḀcation in existing paddy Ḁeld area and the potential of extensiḀcation in land potentially used for paddy Ḁeld. ἀe result of analysis showed that in West Lombok Regency, there are still possible to do intensiḀcation and extensiḀca-tion of paddy Ḁeld to increase rice production in order to improve regional food security.

  3. Bir henoch-schönlein purpurası komplikasyonu : stoma

    OpenAIRE

    Yıldız, Tülin

    2011-01-01

    Henoch Schönlein Purpurası (HSP) deri, böbrek, eklem ve gastrointestinal sistemi etkileyen ve immun kompleks aracılıgı ile olusan bir lökositoklastik veya hipersensitivite vaskülitidir. Esas olarak çocukluk çagı hastalıgıdır. Prognoz genellikle iyidir; ancak siddetli gastrointestinal ve renal bulguları olan hastaların dikkatle tedavi edilmesi ve izlenmesi gerekir. Bazı durumlar ise, hastalık sonucu stoma açılmasını gerektirebilir. Olgumuz, HSP tanısı ile servise kabul edildikten k...

  4. Parametric instabilities in magnetized bi-ion and dusty plasmas

    Indian Academy of Sciences (India)

    N F Cramer; M P Hertzberg; S V Vladimirov

    2003-12-01

    The excitation of low frequency modes of oscillations in a magnetized bi-ion or dusty plasma with parametric pumping of the magnetic field is analysed. The equation of motion governing the perturbed plasma is derived and parametrically excited transverse modes propagating along the magnetic field are found. With multiple ion species or charged dust present, a number of different circularly polarized modes can be excited. The stability of these modes is investigated as a function of the plasma parameters. The modulational instabilities of large amplitude normal modes, modified by the extra ion species or dust and propagating along the magnetic field, are also investigated.

  5. Distributional Dimension of Fractal Sets in Local Fields

    Institute of Scientific and Technical Information of China (English)

    Hua QIU; Wei Yi SU

    2008-01-01

    The distributional dimension of fractal sets in Rn has been systematically studied by Triebel by virtue of the theory of function spaces.In this paper,we .rst discuss some important properties about the B type spaces and the F type spaces on local .elds,then we give the de .nition of the distributional dimension dim D in local .elds and study the relations between distributional dimension and Hausdor .dimension.Moreover,the analysis expression of the Hausdor .dimension is given.Lastly,we de .ne the Fourier dimension in local .elds,and obtain the relations among all the three dimensions.

  6. Black holes under external influence

    Indian Academy of Sciences (India)

    Jiří Bičák

    2000-10-01

    The work on black holes immersed in external fields is reviewed in both test-field approximation and within exact solutions. In particular we pay attention to the effect of the expulsion of the flux of external fields across charged and rotating black holes which are approaching extremal states. Recently this effect has been shown to occur for black hole solutions in string theory. We also discuss black holes surrounded by rings and disks and rotating black holes accelerated by strings.

  7. External lumbar drain: A pragmatic test for prediction of shunt outcomes in idiopathic normal pressure hydrocephalus

    Directory of Open Access Journals (Sweden)

    Silky Chotai

    2014-01-01

    Full Text Available Background: The consensus on most reliable supplemental test to predict the shunt responsiveness in patients with idiopathic normal pressure hydrocephalus (iNPH is lacking. The aim of this study is to discuss the utility of external lumbar drain (ELD in evaluation of shunt responsiveness for iNPH patients. Methods: A retrospective review of 66 patients with iNPH was conducted. All patients underwent 4-day ELD trial. ELD-positive patients were offered ventriculoperitoneal shunt (VPS surgery. The primary outcome evaluation parameters were gait and mini mental status examination (MMSE assessment. The family and patient perception of improvement was accounted for in the outcome evaluation. Results: There were 38 male and 28 female with mean age of 74 years (range 45-88 years. ELD trial was positive in 86% (57/66 of patients. No major complications were encountered with the ELD trial. A total of 60 patients (57 ELD-positive, 3 ELD-negative underwent VPS insertion. The negative ELD trial (P = 0.006 was associated with poor outcomes following shunt insertion. The positive ELD trial predicted shunt responsiveness in 96% patients (P < 0.0001, OR = 96.2, CI = 11.6-795.3. A receiver operating characteristic (ROC curve analysis revealed that the ELD trial is reasonably accurate in differentiating shunt responder from non-responder in iNPH patients (area under curve = 0.8 ± 0.14, P = 0.02, CI = 0.52-1.0. The mean follow-up period was 12-months (range 0.3-3 years. The significant overall improvement after VPS was seen in 92% (55/60. The improvement was sustained in 76% of patients at mean 3-year follow-up. The number of comorbid conditions (P = 0.034, OR = 4.15, CI = 1.2-9.04, and a history of cerebrovascular accident (CVA (P = 0.035, OR = 4.4, CI = 1.9-14.6 were the predictors of poor outcome following shunt surgery. Conclusion: The positive ELD test predicted shunt responsiveness in 96% of patients. With adequate technique, maximal results with minimal

  8. Mechanical Oscillations of Magnetic Strips under the Influence of External Field

    Directory of Open Access Journals (Sweden)

    Bance S.

    2013-01-01

    Full Text Available By application of a magnetic field on an amorphous metallic strip, the orientation of magnetization of Weiss domains can be changed. When the strip changes its length, this effect is called magnetostriction. We simulate this effect using a finite element method. In particular we calculate the change of the mechanical resonance frequency of a magnetic platelet as a function of the applied field. This gives a quantitative model of the influence of the applied magnetic field on the effective Young’s Modulus of the material.

  9. Les polymères issus du végétal : matériaux à propriétés spécifiques pour des applications ciblées en industrie plastique

    Directory of Open Access Journals (Sweden)

    Dubois P.

    2006-01-01

    Full Text Available Features of plant-based polymers with special applications in plastic fi eld. The new interest of plastic fi eld with renewable resources results from a global environmental respect awareness and the fossil depletion problem. In these perspectives, vegetable raw materials mainly polymers show attractive properties with great interests in plastic industry such as biodegradability, biocompatibility, selective permeability or variability in physico-mechanical properties. These properties have targeted applications in various fi elds specifi cally packaging, agricultural, textile, pharmaceutical, electronic or medical domains. This paper describes the different raw materials from plants and their valuable properties in relation with potential applications

  10. Star products from commutative string theory

    Indian Academy of Sciences (India)

    Sunil Mukhi

    2002-01-01

    A boundary-state computation is performed to obtain derivative corrections to the Chern–Simons coupling between a -brane and the RR gauge potential -3. We work to quadratic order in the gauge field strength , but all orders in derivatives. In a certain limit, which requires the presence of a constant -field background, it is found that these corrections neatly sum up into the *2 product of (commutative) gauge fields. The result is in agreement with a recent prediction using noncommutativity

  11. Introduction to a field-theoretical treatment of neutrino oscillations

    Indian Academy of Sciences (India)

    P Stockinger

    2000-01-01

    We discuss the main features of the field-theoretical approach to neutrino oscillations where one combines neutrino production and detection processes in a single Feynman graph. The ‘oscillating neutrinos’ are represented by inner lines of this graph and appear in the calculation of the cross section of the total process as propagators of the neutrino mass eigenfields. We show that this field-theoretical approach leads to a transparent treatment of neutrino oscillations without ambiguities and provides the correct answer in cases where the standard approach fails.

  12. The validity and reliability of motivational factors scale and the benefits scale of participating in trekking activities for Turkish populationBireyleri doğa yürüyüşü yapmaya motive eden faktörler ölçeği ve bu faaliyetlere katılarak elde edilen faydalar ölçeğinin Türk popülasyonu için geçerlilik güvenirlilik çalışması

    OpenAIRE

    Faik Ardahan; Mehmet Mert

    2013-01-01

    There are two main aims of this study; first; define the validity and reliability of “the Motivational Factors Scale for participating in recreational Trekking activities -MFST”; and “the Benefits Scale of participating in Trekking activities - BST”; second; find out the impacts of MFST on BST.As a result, the Motivational Factors Scale for participating recreational Trekking activities, the Benefits Scale of participating in Trekking activities were reliable and valid in the estimation of th...

  13. ADVANCES IN ORGANIC, BIOORGANIC AND NATURAL PRODUCTS CHEMISTRY IN THE INSTITUTE OF CHEMISTRY OF THE ACADEMY OF SCIENCES OF MOLDOVA

    OpenAIRE

    Vlad, Pavel F.; Fliur Z. Macaev

    2009-01-01

    This overview deals with the advances in the investigation in the fi eld of organic, bioorganic and naturalproducts chemistry as well as the biologically active compounds in the Institute of Chemistry of the Academy of Sciences of Moldova.

  14. Optimum Dispatch of Hybrid Solar Thermal (HSTP Electric Power Plant Using Non-Smooth Cost Function and Emission Function for IEEE-30 Bus System

    Directory of Open Access Journals (Sweden)

    Saroj Kumar Dash

    2016-07-01

    Full Text Available The basic objective of economic load dispatch (ELD is to optimize the total fuel cost of hybrid solar thermal electric power plant (HSTP. In ELD problems the cost function for each generator has been approximated by a single quadratic cost equation. As cost of coal increases, it becomes even more important have a good model for the production cost of each generator for the solar thermal hybrid system. A more accurate formulation is obtained for the ELD problem by expressing the generation cost function as a piece wise quadratic cost function. However, the solution methods for ELD problem with piece wise quadratic cost function requires much complicated algorithms such as the hierarchical structure approach along with evolutionary computations (ECs. A test system comprising of 10 units with 29 different fuel [7] cost equations is considered in this paper. The applied genetic algorithm method will provide optimal solution for the given load demand.

  15. Announcing the 2016 Pharmaceuticals Travel Award for Young Investigators

    Directory of Open Access Journals (Sweden)

    Jean Jacques Vanden Eynde

    2016-06-01

    Full Text Available For the first time in its short history, our journal is able, this year, to support a young researcher in the field of medicinal chemistry by offering a travel grant of 800 CHF.[...

  16. Children with mixed language disorder do not discriminate accurately facial identity when expressions change.

    Science.gov (United States)

    Robel, Laurence; Vaivre-Douret, Laurence; Neveu, Xavier; Piana, Hélène; Perier, Antoine; Falissard, Bruno; Golse, Bernard

    2008-12-01

    We investigated the recognition of pairs of faces (same or different facial identities and expressions) in two groups of 14 children aged 6-10 years, with either an expressive language disorder (ELD), or a mixed language disorder (MLD), and two groups of 14 matched healthy controls. When looking at their global performances, children with either expressive (ELD) or MLD have few differences from controls in either face or emotional recognition. At contrary, we found that children with MLD, but not those with ELD, take identical faces to be different if their expressions change. Since children with mixed language disorders are socially more impaired than children with ELD, we think that these features may partly underpin the social difficulties of these children.

  17. Plasma Processes : Sheath and plasma parameters in a magnetized plasma system

    Indian Academy of Sciences (India)

    Bornali Singha; A Sharma; J Chutia

    2000-11-01

    The variation of electron temperature and plasma density in a magnetized 2 plasma is studied experimentally in presence of a grid placed at the middle of the system. Plasma leaks through the negatively biased grid from the source region into the diffused region. It is observed that the electron temperature increases with the magnetic field in the diffused region whereas it decreases in the source region of the system for a constant grid biasing voltage. Also, investigation is done to see the change of electron temperature with grid biasing voltage for a constant magnetic field. This is accompanied by the study of the variation of sheath structure across the grid for different magnetic field and grid biasing voltage as well. It reveals that with increasing magnetic field and negative grid biasing voltage, the sheath thickness expands.

  18. Propagation of waves in a multicomponent plasma having charged dust particles

    Indian Academy of Sciences (India)

    Sukanya Burman; A Roy Chowdhury; S N Paul

    2001-06-01

    Propagation of both low and high frequency waves in a plasma consisting of electrons, ions, positrons and charged dust particles have been theoretically studied. The characteristics of dust acoustic wave propagating through the plasma has been analysed and the dispersion relation deduced is a generalization of that obtained by previous authors. It is found that nonlinear localization of high frequency electromagnetic field in such a plasma generates magnetic field. This magnetic field is seen to depend on the temperatures of electrons and positrons and also on their equilibrium density ratio. It is suggested that the present model would be applicable to find the magnetic field generation in space plasma.

  19. Viscosity and Vorticity in Reduced Magneto-Hydrodynamics

    Energy Technology Data Exchange (ETDEWEB)

    Joseph, Ilon [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

    2015-08-12

    Magneto-hydrodynamics (MHD) critically relies on viscous forces in order for an accurate determination of the electric eld. For each charged particle species, the Braginskii viscous tensor for a magnetized plasma has the decomposition into matrices with special symmetries.

  20. Effect of extended line defects on thermal conduction of carbon nanotubes: analyzing phonon structures by band unfolding

    International Nuclear Information System (INIS)

    We theoretically investigate the effect of extended line defects (ELDs) on thermal transport properties of carbon nanotubes (CNTs) using nonequilibrium Green’s function method. Our study shows that the thermal conductance of CNTs with ELDs can be 25% lower than that of pristine CNTs. By extending the application of the recently developed unfolding method for electronic structures to phonon spectra, we find that the unfolded phonon bands of defected CNTs are split with obvious gap opening, leading to lower phonon transmissions. Further phonon local density of states analysis reveals that the change of bonding configuration near the ELD in defected CNTs can tail the degree of phonon localization. Our results indicate that introducing ELDs might be an efficient way to control thermal conduction of CNTs. The extended unfolding method for phonon systems, found to be efficient in this work, is expected to be applicable to other systems with densely folded phonon bands. (paper)

  1. Future developments and applications of nitrogen-bearing steels and stainless steels

    Indian Academy of Sciences (India)

    J Foct

    2003-06-01

    After considerations related with the global frame of the demand of society in the field of materials and some recalling of basic properties and principles of nitrogen alloying, possible future developments are listed and discussed.

  2. Critical current densities in superconducting materials

    Indian Academy of Sciences (India)

    P Chaddah

    2003-02-01

    We discuss recent research in the area of critical current densities $(J_C)$ in superconductors. This shall cover recent work on newly discovered superconductors, as well as on the magnetic-field dependence of $J_C$.

  3. Computational aeroacoustic study of a landing gear

    OpenAIRE

    Khanal, B.; Knowles, K.; Saddington, Alistair J.; Obayashi, S

    2009-01-01

    Computational study of a single wheel landing gear con guration was completed to understand the noise source and it's nature. The ow eld visualisation showed the present of large structural shedding in the wake side of the the landing gear wheel. These large structures were responsible for the low frequency noise. Spectral peaks at frequencies lower than 200 Hz were found to exist from the analysis of the frequency content of the pressure signals at far eld. These low freque...

  4. Some new approaches to the study of the Earth's magnetic field reversals

    OpenAIRE

    Consolini, G.; De Michelis, P.

    2003-01-01

    Paleomagnetic studies clearly show that the polarity of the magnetic fi eld has been subject to reversals. It is generally assumed that polarity intervals are exponentially distributed. Here, the geomagnetic polarity reversal record, for the past 166 Ma, is analysed and a new approach to the study of the reversals is presented. In detail, the occurrence of 1/f-noise in the Power Spectral Density (PSD), relative to geomagnetic fi eld reversals, the existence of a Zipf's law...

  5. Mirrorless lasers

    Indian Academy of Sciences (India)

    Hema Ramachandran

    2002-02-01

    Experimental realization of mirrorless lasers in the last decade have resulted in hectic activity in this field, due to their novelty, simplicity and ruggedness and their great potential for application. In this article, I will review the various developments in this field in roughly chronological order, and discuss some possible applications of this exciting phenomenon, also termed as ‘random lasing’.

  6. Magnetic cooling provides energy savings and environmental improvements

    DEFF Research Database (Denmark)

    Krogh-Jeppesen, K.

    2007-01-01

    Magnetic cooling exploits the fact that when a magnetic material is magnetised, heat is produced. Conversely, when the magnetic fi eld is again removed, the substance becomes cold. This can be used to make effi cient and environmentally friendlyrefrigerators......Magnetic cooling exploits the fact that when a magnetic material is magnetised, heat is produced. Conversely, when the magnetic fi eld is again removed, the substance becomes cold. This can be used to make effi cient and environmentally friendlyrefrigerators...

  7. The Environmental Liability Directive in A More Sustainable Perspective: A Quest to rejuvenate its approach After Lisbon?

    DEFF Research Database (Denmark)

    Pertoldi-Bianchi, Sandra

    2011-01-01

    The problem statement of the article aims at investigating as to whether it is necessary to update the ELD in a more sustainable perception, and on ascertaining this, as to whether there is any need to confront ecological imperatives and economic integration on the compatibility of the regime......" might suggest and lead to, a preliminary conclusion on the usefulness to compare the ELD regime with the latest amendements of the TFEU on the free momvement of goods, services and competition rules....

  8. 老年类风湿关节炎临床特点分析

    Institute of Scientific and Technical Information of China (English)

    陈海娟; 郭琳

    2011-01-01

    @@ 为探讨老年类风湿关节炎(eldly rheumatoid arthritis,ERA)的临床特点,收集我院ERA患者33例,与同期非老年类风湿关节炎(non-eldly rheumatoid arthritis,NERA)患者80例的临床资料进行对照分析.

  9. Pulsating variable stars as tracers of galactic structure and interaction mechanisms

    OpenAIRE

    Moretti, Maria Ida

    2012-01-01

    My PhD project has been focused on the study of the pulsating variable stars in two ultra-faint dwarf spheroidal satellites of the Milky Way, namely, Leo IV and Hercules; and in two fields of the Large Magellanic Cloud (namely, the Gaia South Ecliptic Pole calibration field, and the 30 Doradus region) that were repeatedly observed in the KS band by the VISTA Magellanic Cloud (VMC, PI M.R. Cioni) survey of the Magellanic System.

  10. Half-monopoles in the Yang–Mills theory

    Indian Academy of Sciences (India)

    E Harikumar; Indrajit Mitra; H S Sharatchandra

    2003-11-01

    Using a gauge-invariant characterization of monopoles defined via their centres, we investigate the generic topological field pattern for the three-dimensional Yang–Mills theory. This leads to field patterns with one-half winding number. After presenting the main features through the simpler case of half-vortices, we consider half-monopoles in detail.

  11. Spectrophotometric Study of the Effect of a Magnetic Field on Human Blood Components

    Science.gov (United States)

    Kazin, V. N.; Makaryin, V. V.; Guzov, E. A.; Moshareva, V. A.; Kovchiy, K. A.

    2016-07-01

    We have used electronic spectroscopy and optical aggregometry to study the effect of a constant magnetic fi eld on blood components. Based on the absorption spectra, we observe a decrease in optical density for both plasma and whole blood samples. Based on the results of platelet aggregation studies, we identifi ed two groups of test subjects with opposite types of responses to exposure to a magnetic fi eld. The observed behavior is probably associated with changes in the spatial structure of the proteins.

  12. AI Magazine Poster: The AI Landscape

    OpenAIRE

    Leake, David B.; Indiana University; Gary, James; Giacomo Marchesi Design

    2008-01-01

    AI's first half-century produced great accomplishments, but many of the field's successes have remained unsung beyond the AI community. AI's integration into the fabric of everyday life has had tremendous impact, but the public may not recognize its many roles or understand its fundamental goals. In response, AI Magazine has developed a poster to help educate students, faculty, and the public about AI and to spur them to find out more about the field.

  13. Bianchi type-V string cosmological models in general relativity

    Indian Academy of Sciences (India)

    Anil Kumar Yadav; Vineet Kumar Yadav; Lallan Yadav

    2011-04-01

    Bianchi type-V string cosmological models in general relativity are investigated. To get the exact solution of Einstein’s field equations, we have taken some scale transformations used by Camci et al [Astrophys. Space Sci. 275, 391 (2001)]. It is shown that Einstein’s field equations are solvable for any arbitrary cosmic scale function. Solutions for particular forms of cosmic scale functions are also obtained. Some physical and geometrical aspects of the models are discussed.

  14. Economic load dispatch using improved gravitational search algorithm

    Science.gov (United States)

    Huang, Yu; Wang, Jia-rong; Guo, Feng

    2016-03-01

    This paper presents an improved gravitational search algorithm(IGSA) to solve the economic load dispatch(ELD) problem. In order to avoid the local optimum phenomenon, mutation processing is applied to the GSA. The IGSA is applied to solve the economic load dispatch problems with the valve point effects, which has 13 generators and a load demand of 2520 MW. Calculation results show that the algorithm in this paper can deal with the ELD problems with high stability.

  15. The longitudinal profile of CSF markers during external lumbar drainage in idiopathic normal pressure hydrocephalus

    OpenAIRE

    Tarnaris, Andrew; Toma, Ahmed; Chapman, Miles D; Petzold, A.; Kitchen, Neil D; Keir, Geoffrey; Watkins, Laurence D

    2009-01-01

    Abstract External lumbar drainage (ELD) is known as a good predictor of favourable outcome in shunting patients suffering from idiopathic normal pressure hydrocephalus (iNPH). To date there has been no study to investigate the changes occurring in the CSF composition of patients undergoing (ELD). Methods: Eleven patients suffering from iNPH participated in a research study to quantify any improvement in their clinical symptoms, for which a lumbar drain (LD) was inserted ...

  16. Deformation measurements of blast loaded plates using digital image correlation and high-speed photography

    Directory of Open Access Journals (Sweden)

    Ndambi J.M.

    2010-06-01

    Full Text Available This paper presents a study on the behaviour of aluminium plates subject to close range blast loads. Measurement of the full out-of-plane displacement field is performed combining two high-speed cameras in a stereoscopic set up and the digital image correlation technique. The measured displacement fields are compared to the calculated data using two different FEM codes. A good agreement has been found between both experimental and numerical data.

  17. Associative learning and perceptual style: Are associated events perceived analytically or as a whole?

    OpenAIRE

    Tsakanikos, Elias

    2006-01-01

    The present study examined whether the formation of associations is affected by individual differences in perceptual style (analytic vs. holistic). Ninety undergraduate students were tested on their ability to associate concurrent events (i.e. word—colour) and were assessed on measures of field dependence and intelligence. The analysis revealed that analytic perceptual style (field independence) was associated with better performance on associative learning, and that this relationship was retain...

  18. Non-linear high-frequency waves in the magnetosphere

    Indian Academy of Sciences (India)

    S Moolla; R Bharuthram; S V Singh; G S Lakhina

    2003-12-01

    Using fluid theory, a set of equations is derived for non-linear high-frequency waves propagating oblique to an external magnetic field in a three-component plasma consisting of hot electrons, cold electrons and cold ions. For parameters typical of the Earth’s magnetosphere, numerical solutions of the governing equations yield sinusoidal, sawtooth or bipolar wave-forms for the electric field.

  19. There is No Effect of Total Sperm Count on Pregnancy Rates in ICSI Cycles

    Directory of Open Access Journals (Sweden)

    Kadir Bakay

    2014-12-01

    Full Text Available Amac: Total sperm sayisinin gebelik oranlarina etkisinin arastirilmasi. Gerec ve Yontem: Bu retrospektif kohort calisma, Ocak 2010 ve Aralik 2012 tarihleri arasinda toplamda 661 ICSI siklusunu iceren iki farkli yardimci ureme teknikleri merkezinin verilerinden elde edilmis olup, bu sikluslarda total sperm sayisin ile gebelik elde etme oranlarini karsilastirmistir. Bulgular: Gruplar arasinda gebelik oranlarinda fark bulunmasina ragmen bu fark istatistiksel olarak anlamli bulunmamistir. Tartisma: Calismamizda ICSI sikluslarinda total sperm sayisinin gebelik oranlarina etkisi olmadigi gosterilmistir.\

  20. Dynamical properties of a two-level system with arbitrary nonlinearities

    Indian Academy of Sciences (India)

    Mahmoud Abdel-Aty; Nour A Zidan

    2003-09-01

    We investigate some aspects of a generalized JC-model which include arbitrary forms of non-linearities of both the field and the intensity-dependent atom–field coupling. We obtain an exactly analytic solution of the model, by means of which we identify and numerically demonstrate the region of parameters where significantly large entanglement can be obtained.

  1. Preparation and characterization of MgB2 superconductor

    Indian Academy of Sciences (India)

    Shashwati Sen; D K Aswal; Ajay Singh; T V Chandrasekhar Rao; K P Muthe; J C Vyas; L C Gupta; S K Gupta; V C Sahni

    2002-05-01

    The MgB2 superconductor, synthesized using solid-state and liquid-phase sintering methods, have been characterized for various properties. The upper critical field, irreversibility line and critical current density have been determined using magnetization data. The current–voltage characteristics recorded under an applied magnetic field revealed the existence of vortex glass transition. The surface analysis using X-ray photoelectron spectroscopy shows that MgB2 is sensitive to atmospheric degradation.

  2. Theory of slow light excitation in 1D photonic crystals

    OpenAIRE

    Yudistira, D.; Marpaung, D.A.I.; Handoyo, H.P.; Hoekstra, H.J.W.M.; Hammer, M; Tjia, M.O.; Iskandar, A.A.

    2004-01-01

    Slow light (SL) states corresponding to wavelength regions near the bandgap edge of grated structures are known to show strong eld enhancement. Such states may be excited efciently by well-optimised adiabatic transitions in grating structures, e.g., by slowly turning on the modulation depth. To study adiabatic excitations, a detailed investigation in 1D is performed to obtain insight into the relation between the device parameters and properties like eld enhancement and modal reection. The re...

  3. Collision Avoidance with Potential Fields Based on Parallel Processing of 3D-Point Cloud Data on the GPU

    OpenAIRE

    Kaldestad, Knut B.; Haddadin, Sami; Belder, Rico; Hovland, Geir; Anisi, David A.

    2014-01-01

    In this paper we present an experimental study on real-time collision avoidance with potential fields that are based on 3D point cloud data and processed on the Graphics Processing Unit (GPU). The virtual forces from the potential fields serve two purposes. First, they are used for changing the reference trajectory. Second they are projected to and applied on torque control level for generating according nullspace behavior together with a Cartesian impedance main control ...

  4. Habitat Selection by Eld’s Deer following Relocation to a Patchy Landscape

    OpenAIRE

    Duo Pan; Yan-Ling Song; Zhi-Gao Zeng; Bravery, Benjamin D.

    2014-01-01

    An emerging issue in wildlife conservation is the re-establishment of viable populations of endangered species in suitable habitats. Here, we studied habitat selection by a population of Hainan Eld's deer (Cervus eldi) relocated to a patchy landscape of farmland and forest. Hainan Eld's deer were pushed to the brink of extinction in the 1970s, but their population expanded rapidly from 26 to more than 1000 individuals by 2003 through effective reserve protection. As part of a wider relocation...

  5. 伐らない焼畑--カメルーン東南部の熱帯雨林帯におけるカカオ栽培の受容にみられる変化と持続 (特集 地域研究の前線)

    OpenAIRE

    四方, 篝

    2007-01-01

    Cacao (Theobroma cacao L.) is an important cash crop for small-scale Bangandou farmers living in forested area of Cameroon. In this region, cacao is usually grown under the shade in fi elds of selectively thinned natural forestland. This study aims to clarify how the cacao-growing system has been integrated into the Bangandou's subsistence slash-and-burn agriculture and examines its role in their livelihood. Bangandou people favor establishing new cacao fi elds in primary forests or old cacao...

  6. Charged fluids with symmetries

    Indian Academy of Sciences (India)

    S D Maharaj; D B Lorthan

    2011-09-01

    We investigate the role of symmetries for charged perfect fluids by assuming that spacetime admits a conformal Killing vector. The existence of a conformal symmetry places restrictions on the model. It is possible to find a general relationship for the Lie derivative of the electromagnetic field along the integral curves of the conformal vector. The electromagnetic field is mapped conformally under particular conditions. The Maxwell equations place restrictions on the form of the proper charge density.

  7. High-field thermal transports properties of REBCO coated conductors

    CERN Document Server

    Bonura, M

    2015-01-01

    The use of REBCO coated conductors is envisaged for many applications, extending from power cables to high-field magnets. Whatever the case, thermal properties of REBCO tapes play a key role for the stability of superconducting devices. In this work, we present the first study on the longitudinal thermal conductivity (k) of REBCO coated conductors in magnetic fields up to 19 T applied both parallelly and perpendicularly to the thermal-current direction. Copper-stabilized tapes from six industrial manufacturers have been investigated. We show that zero-field k of coated conductors can be calculated with an accuracy of ‡ 15% from the residual resistivity ratio of the stabilizer and the Cu/non-Cu ratio. Measurements performed at high fields have allowed us to evaluate the consistency of the procedures generally used for estimating in-field k in the framework of the Wiedemann-Franz law from an electrical characterization of the materials. In-field data are intended to provide primary ingredients for the ...

  8. Tectonomagnetic study in the seismoactive area of Narmada–Son lineament, central India: Preliminary results on repeat field observations

    Indian Academy of Sciences (India)

    S Y Waghmare; S D Pimprikar; P B Gawali; L Carlo; A G Patil

    2009-06-01

    Repeated measurements of the total geomagnetic field on the five profiles have revealed a picture of stress-induced tectonomagnetic effect in the form of secular variation of the total geomagnetic field in the tectonically and seismically active area of Jabalpur and adjoining areas of the Narmada-Son lineament (NSL),central India.For this experiment,a reference base station was established within the study area at Jabalpur.Using proton precession magnetometers with a sensitivity of 0.1 nT, simultaneous measurements of total geomagnetic field were made annually at the base and all field stations.Five cycles of repeated observations have been performed between 2003 and 2007.For data analysis,a difference method has been applied and the residuals have been calculated as secular variations of the total geomagnetic field with values ranging from ± 0.1nT to about > ± 14.6nT/yr over the different stations.The anomalies in secular variation of the total geomagnetic field may be related to anomalous accumulation of tectonic stresses and tensions on the deep fault zones and crustal blocks due to recent geodynamic processes and active geological inhomogeneities in the NSL.

  9. Field theoretic calculation of energy cascade rates in non-helical magnetohydrodynamic turbulence

    Indian Academy of Sciences (India)

    Mahendra K Verma

    2004-06-01

    Energy cascade rates and Kolmogorov’s constant for non-helical steady magnetohydrodynamic turbulence have been calculated by solving the flux equations to the first order in perturbation. For zero cross helicity and space dimension $d = 3$, magnetic energy cascades from large length-scales to small length-scales (forward cascade). In addition, there are energy fluxes from large-scale magnetic field to small-scale velocity field, large-scale velocity field to small-scale magnetic field, and large-scale velocity field to large-scale magnetic field. Kolmogorov’s constant for magnetohydrodynamics is approximately equal to that for fluid turbulence $(≈ 1.6)$ for Alfvén ratio $0.5≤ r_{A}≤ ∞$. For higher space-dimensions, the energy fluxes are qualitatively similar, and Kolmogorov’s constant varies as $d^{1/3}$. For the normalized cross helicity $_{c}→ 1$, the cascade rates are proportional to $(1-_{c})/(1+_{c})$, and the Kolmogorov’s constants vary significantly with $_{c}$.

  10. OH AND CN ZEEMAN OBSERVATIONS OF MAGNETIC FIELDS IN MOLECULAR CLOUDS

    Directory of Open Access Journals (Sweden)

    R. M. Crutcher

    2009-01-01

    Full Text Available Observations of the Zeeman e ect in OH and CN provide valuable information about magnetic eld strengths and directions in molecular clouds in the density range 103 < n(cm-3 < 106 that these species sample. These data make it possible to test predictions of weak eld, turbulence driven star formation and strong eld, ambipolar di usion driven star formation. Here we discuss exactly what information Zeeman observations provide and how those data may be analyzed to yield meaningful results. The data imply that the mean mass-to-ux ratio in molecular cores is - 2 - 3 times critical, which means that magnetic elds are generally not strong enough to prevent gravitational collapse. However, this information about mean eld strengths is not de nitive in excluding one or the other of the two models of star formation. Present data do suggest that magnetic elds play a very signi cant role in the evolution of molecular clouds and in the star formation process. Finally, very preliminary results are discussed from two in-progress studies; these studies have the potential to be signi cantly more de nitive in testing the predictions of star formation theory, and perhaps in discriminating between the two theories.

  11. Field theoretic calculation of energy cascade rates in non-helical magnetohydrodynamic turbulence

    Indian Academy of Sciences (India)

    Mahendra K Verma

    2003-09-01

    Energy cascade rates and Kolmogorov’s constant for non-helical steady magnetohydrodynamic turbulence have been calculated by solving the flux equations to the first order in perturbation. For zero cross helicity and space dimension = 3, magnetic energy cascades from large length-scales to small length-scales (forward cascade). In addition, there are energy fluxes from large-scale magnetic field to small-scale velocity field, large-scale velocity field to small-scale magnetic field, and large-scale velocity field to large-scale magnetic field. Kolmogorov’s constant for magnetohydrodynamics is approximately equal to that for fluid turbulence (≈ 1.6) for Alfvén ratio 0.5 ≤ A ≤ ∞. For higher space-dimensions, the energy fluxes are qualitatively similar, and Kolmogorov’s constant varies as 1/3. For the normalized cross helicity c → 1, the cascade rates are proportional to (1-c)/(1+c), and the Kolmogorov’s constants vary significantly with c.

  12. Comment on magnetism and superconductivity in rutheno cuprates: RuSr2GdCu2O8 and RuSr2Gd1.5Ce0.5Cu2O10

    Indian Academy of Sciences (India)

    V P S Awana; M Karppinen; H Yamauchi

    2002-05-01

    Both RuSr2GdCu2O8- (Ru-1212) and RuSr2Gd1.5Ce0.5Cu2O10- (Ru-1222) exhibits magnetism and superconductivity, as seen by magnetization vs. temperature behavior measured in 5 Oe field. Zero-field-cooled (ZFC) and field-cooled (FC) magnetization data show branching at around 140 K and 100 K with a cusp at 135 K and 80 K and a diamagnetic transition around 20 K and 30 K in the ZFC part, for Ru-1212 and Ru-1222, respectively. The isothermal magnetization possesses a non-linear contribution due to a ferromagnetic component at low temperatures below 50 K for both samples. The resistance vs. temperature behavior of the samples in applied fields of 0, 3 and 7 T confirmed superconductivity, with a different type of broadening of the superconductivity transition under magnetic fields for Ru-1212 from that known for conventional high-c superconductors. The magnetoresistance (MR) is negative above the Ru magnetic ordering temperature at 135 K. Below the Ru magnetic ordering temperature, MR displays a positive peak at low fields and becomes negative at higher fields for Ru-1212. For Ru-1222, MR remains negative both above and below the ordering temperature. A maximum of 2% is observed for the negative MR value at the Ru magnetic ordering temperature. An electron diffraction pattern obtained for the Ru-1212 sample shows two types of superstructure: one has a weak spot at the centre of the - rectangle, and the other only along the direction. Interestingly, Ru-1222 shows only clean - and - planes, without any superstructures.

  13. STUDIES OF A FREE ELECTRON LASER DRIVEN BY A LASER-PLASMA ACCELERATOR

    Energy Technology Data Exchange (ETDEWEB)

    Montgomery, A.; Schroeder, C.; Fawley, W.

    2008-01-01

    A free electron laser (FEL) uses an undulator, a set of alternating magnets producing a periodic magnetic fi eld, to stimulate emission of coherent radiation from a relativistic electron beam. The Lasers, Optical Accelerator Systems Integrated Studies (LOASIS) group at Lawrence Berkeley National Laboratory (LBNL) will use an innovative laserplasma wakefi eld accelerator to produce an electron beam to drive a proposed FEL. In order to optimize the FEL performance, the dependence on electron beam and undulator parameters must be understood. Numerical modeling of the FEL using the simulation code GINGER predicts the experimental results for given input parameters. Among the parameters studied were electron beam energy spread, emittance, and mismatch with the undulator focusing. Vacuum-chamber wakefi elds were also simulated to study their effect on FEL performance. Energy spread was found to be the most infl uential factor, with output FEL radiation power sharply decreasing for relative energy spreads greater than 0.33%. Vacuum chamber wakefi elds and beam mismatch had little effect on the simulated LOASIS FEL at the currents considered. This study concludes that continued improvement of the laser-plasma wakefi eld accelerator electron beam will allow the LOASIS FEL to operate in an optimal regime, producing high-quality XUV and x-ray pulses.

  14. Analysis of delayed convergence in the three-noded Timoshenko beam element using the function space approach

    Indian Academy of Sciences (India)

    Somenath Mukherjee; Gangan Prathap

    2002-10-01

    Despite satisfying only completeness and continuity requirements, elements often perform erroneously in a certain class of problems, called the locking situations, where they display spurious stress oscillations and enhanced stiffness properties. The function space approach that effectively substantiates the postulates of the field consistency paradigm is an efficient tool to reveal the fundamental cause of locking phenomena, and propose methods to eliminate this pathological problem. In this paper, we review the delayed convergence behaviour of three-noded Timoshenko beam elements using the rigorous function space approach. Explicit, closed form algebraic results for the element strains, stresses and errors have been derived using this method. The performance of the field-inconsistent three-noded Timoshenko beam element is compared with that of the field-inconsistent twonoded beam element. It is demonstrated that while the field-inconsistent two-noded linear element is prone to shear locking, the field-inconsistent three-noded element is not very vulnerable to this pathological problem, despite the resulting shear oscillations.

  15. Cerebrospinal Fluid Biomarkers in Idiopathic Normal Pressure Hydrocephalus

    Directory of Open Access Journals (Sweden)

    Ville Leinonen

    2011-01-01

    Full Text Available The diagnosis of idiopathic normal pressure hydrocephalus (iNPH is still challenging. Alzheimer's disease (AD, along with vascular dementia, the most important differential diagnosis for iNPH, has several potential cerebrospinal fluid (CSF biomarkers which might help in the selection of patients for shunt treatment. The aim of this study was to compare a battery of CSF biomarkers including well-known AD-related proteins with CSF from patients with suspected iNPH collected from the external lumbar drainage test (ELD. A total of 35 patients with suspected iNPH patients were evaluated with ELD. CSF was collected in the beginning of the test, and the concentrations of total tau, ptau181, Aβ42, NFL, TNF-α, TGFβ1, and VEGF were analysed by ELISA. Twenty-six patients had a positive ELD result—that is, their gait symptoms improved; 9 patients had negative ELD. The levels of all analyzed CSF biomarkers were similar between the groups and none of them predicted the ELD result in these patients. Contrary to expectations lumbar CSF TNF-α concentration was low in iNPH patients.

  16. Investigating the vortex melting phenomenon in BSCCO crystals using magneto-optical imaging technique

    Indian Academy of Sciences (India)

    A Soibel; S S Banerjee; Y Myasoedov; M L Rappaport; E Zeldov; S Ooi; T Tamegai

    2002-05-01

    Using a novel differential magneto-optical imaging technique we investigate the phenomenon of vortex lattice melting in crystals of Bi2Sr2CaCu2O8 (BSCCO). The images of melting reveal complex patterns in the formation and evolution of the vortex solid–liquid interface with varying field ()/temperature (). We believe that the complex melting patterns are due to a random distribution of material disorder/inhomogeneities across the sample, which create fluctuations in the local melting temperature or field value. To study the fluctuations in the local melting temperature/field, we have constructed maps of the melting landscape m(, ), viz., the melting temperature (m) at a given location () in the sample at a given field (). A study of these melting landscapes reveals an unexpected feature: the melting landscape is not fixed, but changes rather dramatically with varying field and temperature along the melting line. It is concluded that the changes in both the scale and shape of the landscape result from the competing contributions of different types of quenched disorder which have opposite effects on the local melting transition.

  17. Variational method for objective analysis of scalar variable and its derivative

    Indian Academy of Sciences (India)

    S G Narkhedkar; S K Sinha

    2008-10-01

    In this study real time data have been used to compare the standard and triangle method by performing the objective analysis of mean sea level pressure.In the standard method,derivative fields are obtained from the grid point data using finite difference scheme whereas in the triangle method,a set of non-overlapping triangles are formed from the observations and the scalar and the spatial derivatives are computed directly at the centroid of each of the non-overlapping triangles.These scalars and their derivatives are then mapped to uniform grids by using the standard method.It has been found that objectively analysed scalar field obtained using standard method is superior to the scalar field derived by the triangle method,whereas the derivative fields produced by triangle method are superior to the derivative fields produced using standard method. A variational objective analysis scheme has been developed and an experiment has been carried out with depression case of June (11 –15)2004.It is found that the new scheme (variational)is able to extract the better parts of both triangle and standard methods.The results of this study will be useful in carrying out diagnostic calculations that involve derivative estimates.

  18. Energy fluxes in helical magnetohydrodynamics and dynamo action

    Indian Academy of Sciences (India)

    Mahendra K Verma

    2003-10-01

    Renormalized viscosity, renormalized resistivity, and various energy fluxes are calculated for helical magnetohydrodynamics using perturbative field theory. The calculation is of first-order in perturbation. Kinetic and magnetic helicities do not affect the renormalized parameters, but they induce an inverse cascade of magnetic energy. The sources for the large-scale magnetic field have been shown to be (1) energy flux from large-scale velocity field to large-scale magnetic field arising due to non-helical interactions and (2) inverse energy flux of magnetic energy caused by helical interactions. Based on our flux results, a primitive model for galactic dynamo has been constructed. Our calculations yield dynamo time-scale for a typical galaxy to be of the order of 108 years. Our field-theoretic calculations also reveal that the flux of magnetic helicity is backward, consistent with the earlier observations based on absolute equilibrium theory.

  19. DİŞ HEKİMLİĞİNDE DOKU MÜHENDİSLİĞİNİN YERİ - Tissue Engineering in Dentistry

    OpenAIRE

    Sırık, Z. Selin; Ergin, Selen; Işık, Gülbahar

    2012-01-01

    özDoku mühendisliği hasarlı doku ve organların yeniden restore edilmesini amaçlayan bir mühendislik dalıdır. Bu mühendislik dalı, hücrelerin doğal veya sentetik yapı iskelelerine spesifik sinyallerle entegre edilmesi üzerine kurulmuştur. Bu kısa derlemede diş hekimliğinde doku mühedisliği stratejiler ve uygulama alanları olarak iki başlık altında incelenmiştir. Doku mühendisliği stratejilerinde doku kondüksiyonu, doku indüksiyonu, kök hücre nakli ve gen terapisi tanımlanmış, doku mühendisliği...

  20. FAALİYETE DAYALI MALİYETLEME YÖNTEMİNE GÖRE KALİTE MALİYETLERİNİN ÖLÇÜLMESİ - TEKSTİL SEKTÖRÜNDE BİR UYGULAMA

    OpenAIRE

    TOPCU, Nuraydın

    2010-01-01

    Küresel rekabet ortamında işletmelerin en önemli önceliği müşterilerin tatminini en yüksek seviyeye çıkarmak ve maliyetleri düşürmek olmalıdır. Bunu başarmanın yollarından birisi de üretilen mal ve hizmetlerin kalitesini sürekli olarak geliştirmektir. Bu bağlamda kalite maliyetlerinin ölçülmesi, analizi ve işletme yönetimine rapor edilmesi hayati öneme sahiptir. Ancak, Türkiye’de uygulanan muhasebe siste...

  1. PEDİATRİ HEMŞİRELİĞİNDE İLAÇ YÖNETİMİ

    OpenAIRE

    Çetinkaya, Şenay; Tengir, Tülay

    2010-01-01

    ÖZETÇocuğun gelişimsel özellikleri, ilaç uygulamalarında kullanılan teknikleri ve yaklaşımları etkiler. Bu makalede, yetişkin ve çocuk arasındaki farmakokineti farklılığı gözönüne alınarak; ilaç uygulamalarında hemşirenin sorumlulukları, ilaçların uygu-lanma yöntemleri ve bu yöntemlerin çocukluk dönemlerine göre dikkat edilmesi gereken unsurları vurgulanmıştır. Hemşire ilaçların hazırlanması, uygulan...

  2. Karışım DNA profillerinin incelenmesi ve yorumlanması

    OpenAIRE

    YARDIMCI, Emel

    2011-01-01

    Karışım DNA profillerine, başta cinsel saldırı olayları olmak üzere başka bir çok olayda rastlanmaktadır. Karışımların tespit edilmesi ve yorumlanması eğitim ile birlikte deneyim gerektirmektedir.Bu tez çalışmasındaki amaç, bir adli DNA laboratuvarın imkan ve kabiliyetleri ile, karışım DNA profillerinin incelenmesi ve yorumlanması için rut...

  3. Türkiye’de Amaranthus (Amaranthaceae) Türlerine Karşı Biyolojik Mücadelede Böceklerin Kullanımı

    OpenAIRE

    TOZLU, Göksel; ÇORUH, İrfan; Gültekin, Levent

    2013-01-01

    ÖZET: Horoz ibiği türleri (Amaranthus spp.) dünyada ekonomik bakımdan oldukça önemli yabancı ot türleridir. Bu türlerden de özellikle Amaranthus retroflexus L. Avrupa ve Türkiye'de büyük öneme sahip 10 yabancı ot türünden birisidir. Çok değişik kültür bitkisi alanlarında önemli sorunlara neden olan bu cinse mensup türler ile mücadele edilmesi kaçınılmazdır. Bunu yaparken kimyasal m&u...

  4. Yıldırma (Mobbing): Kuramsal Bir Çerçeve

    OpenAIRE

    Güneş Ertuna , Derya; Ertuna, Erdem

    2015-01-01

    Mobbing; işletmelerde çalışanların çalışma arkadaşları, yöneticileri ve/veya astları tarafından rahatsız ve huzursuz edilmesi, fiziksel ve/veya psikolojik şiddete maruz bırakılması olarak değerlendirilebilmektedir. Bu yönüyle mobbingin ana amacı, mobbing mağduru konumundaki kişinin yıldırılması ve bir anlamda yenik düşmesinin sağlanması olarak ifade edilmektedir. “İsveç Ulusal İş Güvenliği ve Hijyeni Dairesi (Swedish National Board of Occupational Safety and Health)” tarafından mobbing kavram...

  5. Patates Hasat Makinalarında Yumru Zedelenmelerinin Değerlendirilmesi ve Çözüm Önerileri

    OpenAIRE

    GÜLER, İbrahim Ethem

    2013-01-01

    ÖZET : Tarımsal üretimde hasat işlemi tüm üretim aşamaları içerisinde dikkat edilmesi gereken en zor aşamalardan birisidir. Patates hasadı da bu anlamda ürün verimini, yumru kalitesini, pazarlama düzeyini ve yumru depolanabilirliğini etkileyen en önemli aşamadır. Patates tarımında ürün verimi ve kalitesi hasat esnasında artmayabilir, ancak uygun olmayan ve dikkatsiz uygulamalar kesin olarak ürün kalitesini, verimini ve ekonomi...

  6. İMKB’ye Kayıtlı Sanayi İşletmelerinin Maliyet Yönetim Sistemlerini Uygulama ve Uygulamama Nedenlerinin Tespitine Yönelik Bir Araştırma / A Research on Determination of Reasons for Applying and Not Applying Cost Management Systems of Manufacturing...

    OpenAIRE

    Karcıoğlu, Reşat; Öztürk,Meryem

    2012-01-01

    Özet: Bu çalışmada, maliyet yönetim sistemlerinin (Faaliyet Tabanlı Maliyetleme, HedefMaliyetleme, Kaizen Maliyetleme, Kalite Maliyet Sistemi, Tam Zamanında Üretim OrtamındaMaliyetleme, Mamul Yaşam Dönemi Maliyetleme) tespit edilmesi ve maliyet yönetim sistemleriniuygulayan işletmelerin bunları hangi amaçlarla uyguladıkları, uygulamayan işletmelerinneden uygulamadıklarının belirlenmesi amaçlanmıştır. Bu amaç doğrultusunda 2011 yılınınŞubat ...

  7. Nonsteroidal anti-inflamatuvar ilaçların gebelikteki toksisiteleri ile ilgili literatürlerin gözden geçirilmesi

    OpenAIRE

    Gökçimen, Alpaslan; Malas, M.Ali

    2009-01-01

    SüleymanDemirel Üniversitesi TIP FAKÜLTESİ DERGİSİ: 2003 Eylül; 10(3) Nonsteroidal anti-inflamatuvar ilaçların gebelikteki toksisiteleri ile ilgili literatürlerin gözden geçirilmesi Alparslan Gökçimen, M.Ali Malas Özet Nonsteroidal anti-inflamatuvar ilaç (NSAII)'lar genellikle romatizmal hastalıklarda, ağrı, ateş ve enflamasyonun tedavisi için kullanılır. Gebelikteki aktif romatizmal hastalığın tedavi edilmesi, anne sağlığı ve fetüsün gelişimi için ön...

  8. Relativistic Electrons in Electric Discharges

    DEFF Research Database (Denmark)

    Cinar, Deniz

    have studied the electron acceleration and photon generation in a constant electric _eld under a variety of conditions. These include the energy and number of seed electrons, electric_eld and altitude. We found that the distributions of avalanche electrons and photons are insensitive......Thunderstorms generate bursts of X- and Gamma radiation. When observed from spacecraft, the bursts are referred to as “Terrestrial Gamma-ray Flashes” (TGFs). They are bremsstrahlung from energetic electrons accelerated in thunderstorm electric _elds. The TGFs were _rst observed in the 90ties...... at the time when also gigantic electric discharges were observed at 10-90 km altitude in the stratosphere and mesosphere, the so called “jets” and “sprites”, commonly referred to as “Transient Luminous Events” (TLEs). TGFs were _rst thought connected to TLEs, but later research has pointed to lightning...

  9. On the advancements of conformal transformations and their associated symmetries in geometry and theoretical physics

    International Nuclear Information System (INIS)

    The historical developments of conformal transformations and symmetries are sketched: Their origin from stereographic projections of the globe, their blossoming in two dimensions within the eld of analytic complex functions, the generic role of transformations by reciprocal radii in dimensions higher than two and their linearization in terms of polyspherical coordinates by Darboux, Weyl's attempt to extend General Relativity, the slow rise of nite dimensional conformal transformations in classical eld theories and the problem of their interpretation, then since about 1970 the rapid spread of their acceptance for asymptotic and structural problems in quantum eld theories and beyond, up to the current AdS=CFT conjecture. The occasion for the present article: hundred years ago Bateman and Cunningham discovered the form invariance of Maxwell's equations for electromagnetism with respect to conformal space-time transformations. (orig.)

  10. Supercooling across first-order phase transitions in vortex matter

    Indian Academy of Sciences (India)

    P Chaddah; S B Roy

    2000-06-01

    Hysteresis in cycling through first-order phase transitions in vortex matter, akin to the well-studied phenomenon of supercooling of water, has been discussed in literature. Hysteresis can be seen while varying either temperature or magnetic field (and thus the density of vortices). Our recent work on phase transitions with two control variables shows that the observable region of metastability of the supercooled phase would depend on the path followed in - space, and will be larger when is lowered at constant compared to the case when is lowered at constant . We discuss the effect of isothermal field variations on metastable supercooled states produced by field-cooling. This path dependence is not a priori applicable to metastability caused by reduced diffusivity or hindered kinetics.

  11. Velocity and turbulence at a wing-wall abutment

    Indian Academy of Sciences (India)

    Abdul Karim Barbhuiya; Subhasish Dey

    2004-02-01

    Experimental investigation of the 3D turbulent flow field around a 45° wing-wall abutment, resting on a rough rigid bed, is reported. The experiment was conducted in a laboratory flume using the Acoustic Doppler Velocimeter (ADV). Profiles of time-averaged velocity components, turbulent intensity components, turbulent kinetic energy and Reynolds stresses at different azimuthal planes are presented. Vector plots of flow fields at azimuthal and horizontal planes show the presence of a primary vortex associated with the downflow in the upstream side of the abutment and a wake vortex on the downstream side. The shear stresses acting on the bed around the abutment are estimated from the Reynolds stresses and velocity gradients. The data presented in this study would be useful to researchers for future development and comparison of theoretical models of flow fields around bridge abutments.

  12. Chandrasekhar–Kendall functions in astrophysical dynamos

    Indian Academy of Sciences (India)

    Axel Brandenburg

    2011-07-01

    Some of the contributions of Chandrasekhar to the field of magnetohydrodynamics are highlighted. Particular emphasis is placed on the Chandrasekhar–Kendall functions that allow a decomposition of a vector field into right- and left-handed contributions. Magnetic energy spectra of both contributions are shown for a new set of helically forced simulations at resolutions higher than what has been available so far. For a forcing function with positive helicity, these simulations show a forward cascade of the right-handed contributions to the magnetic field and nonlocal inverse transfer for the left-handed contributions. The speed of inverse transfer is shown to decrease with increasing value of the magnetic Reynolds number.

  13. Forces between a partially coherent fluctuating source and a magnetodielectric particle

    CERN Document Server

    Auñon, Juan Miguel

    2013-01-01

    We address the forces exerted by the electromagnetic ?eld emitted by a planar uctuating source on dielectric particles that have arose much interest because of their recently shown magnetodielectric behavior. In this context, we analyze as a particular case the modi?cation of the Casimir and Van der Waals forces. We study the e?ect of the source coherence length as well as the interplay between the force from the radiated ?eld and that from the electric and magnetic dipoles induced on the particle. This allows a control of these interactions as well as of the weight and interference e?ects between the ?elds from both kinds of induced dipoles, in particular when large changes in their di?erential scattering cross section occur due to Kerker minimum forward or zero backward conditions; thus opening new paths to nanoparticle ensembling and manipulation. The influence of surface waves of the source is also studied.

  14. Free convection effects and radiative heat transfer in MHD Stokes problem for the flow of dusty conducting fluid through porous medium

    Indian Academy of Sciences (India)

    Om Prakash; Devendra Kumar; Y K Dwivedi

    2012-03-01

    The present note deals with the effects of radiative heat transfer and free convection in MHD for a flow of an electrically conducting, incompressible, dusty viscous fluid past an impulsively started vertical non-conducting plate, under the influence of transversely applied magnetic field. The heat due to viscous dissipation and induced magnetic field is assumed to be negligible. The governing linear partial differential equations are solved by finite difference technique. The effects of various parameters (like radiation parameter , Prandtl number Pr, porosity parameter ) entering into the MHD Stokes problem for flow of dusty conducting fluid have been examined on the temperature field and velocity profile for both the dusty fluid and dust particles.

  15. Vortex lattice transitions in YNi2B2C

    Indian Academy of Sciences (India)

    S J Levett; C D Dewhurst; D McK Paul

    2002-05-01

    We have performed extensive small-angle neutron scattering (SANS) diffraction studies of the vortex lattice in single crystal YNi2B2C for $B||c$. High-resolution SANS, combined with a field-oscillation vortex lattice preparation technique, allows us to separate Bragg scattered intensities from two orthogonal domains and accurately determine the unit cell angle, . The data suggest that upon increasing field there is a finite transition width where both low- and high-field distorted hexagonal vortex lattice phases, mutually rotated by 45°, coexist. The smooth variation of diffracted intensity from each phase through the transition corresponds to a redistribution of populations between the two types of domains.

  16. On the advancements of conformal transformations and their associated symmetries in geometry and theoretical physics

    Energy Technology Data Exchange (ETDEWEB)

    Kastrup, H.A. [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Theory Group

    2008-08-15

    The historical developments of conformal transformations and symmetries are sketched: Their origin from stereographic projections of the globe, their blossoming in two dimensions within the eld of analytic complex functions, the generic role of transformations by reciprocal radii in dimensions higher than two and their linearization in terms of polyspherical coordinates by Darboux, Weyl's attempt to extend General Relativity, the slow rise of nite dimensional conformal transformations in classical eld theories and the problem of their interpretation, then since about 1970 the rapid spread of their acceptance for asymptotic and structural problems in quantum eld theories and beyond, up to the current AdS=CFT conjecture. The occasion for the present article: hundred years ago Bateman and Cunningham discovered the form invariance of Maxwell's equations for electromagnetism with respect to conformal space-time transformations. (orig.)

  17. MAGNETIC FIELDS AND POLARIZED EMISSION FROM SELECTED ENVIRONMENTS

    Directory of Open Access Journals (Sweden)

    R. H. Hildebrand

    2009-01-01

    Full Text Available Measurements of polarized emission from molecular clouds have provided maps of magnetic elds as projected on the sky. The polarization spectrum has given evidence for multiple cloud components in which dust grains at di erent temperatures have di erent polarizing effciencies. With improvements in angular resolution and with additional choices of wavelength, it is becoming possible to make observations in selected environments such as dense clumps, clusters of embedded stars, and regions of high column densities. These observations provide improved cloud models and also provide tests of grain alignment mechanisms such as alignment by radiative torques. Measurements of eld dispersion, as applied to studies of eld strengths or turbulence, require high angular resolution, and accurate position angle measurements at very many points. The possibilities for such measurements, especially in the range ~ 50 -200 um, will be greatly enhanced when SOFIA is equipped with a high-performance far-infrared polarimeter.

  18. Surface-grafted polymer-assisted electroless deposition of metals for flexible and stretchable electronics.

    Science.gov (United States)

    Liu, Xuqing; Zhou, Xuechang; Li, Yi; Zheng, Zijian

    2012-05-01

    Surface-grafted polymers, that is, ultrathin layers of polymer coating covalently tethered to a surface, can serve as a particularly promising nanoplatform for electroless deposition (ELD) of metal thin films and patterned structures. Such polymers consist of a large number of well-defined binding sites for highly efficient and selective uptake of ELD catalysts. Moreover, the polymer chains provide flexible 3D network structures to trap the electrolessly deposited metal particles, leading to strong metal-substrate adhesion. In the past decade, surface-grafted polymers have been demonstrated as efficient nanoplatforms for fabricating durable and high-performance metal coatings by ELD on plastic substrates for applications in flexible and stretchable electronics. This focus review summarizes these recent advances, with a particular focus on applications in polymeric flexible and stretchable substrates. An outlook on the future challenges and opportunities in this field is given at the end of this paper. PMID:22392811

  19. Gravitational Jaynes–Cummings model beyond the rotating wave approximation

    Indian Academy of Sciences (India)

    M Mohammadi

    2012-05-01

    In this paper, the quantum properties of a two-level atom and the cavity-field in the Jaynes–Cummings model with the gravity beyond the rotating wave approximation are investigated. For this purpose, by solving the Schrödinger equation in the interaction picture, the evolving state of the system is found by which the influence of the counter-rotating terms on the dynamical behaviour of atomic population inversion and the probability distribution of the cavity-field as quantum properties is explored. The results in the atom–field system beyond the rotating wave approximation with the gravity show that the quantum properties are not completely suppressed under certain conditions.

  20. Tenth workshop on the algorithmic foundations of robotics (WAFR)

    CERN Document Server

    Lozano-Perez, Tomas; Roy, Nicholas; Rus, Daniela; Algorithmic foundations of robotics X

    2013-01-01

    Algorithms are a fundamental component of robotic systems. Robot algorithms process inputs from sensors that provide noisy and partial data, build geometric and physical models of the world, plan high-and low-level actions at different time horizons, and execute these actions on actuators with limited precision. The design and analysis of robot algorithms raise a unique combination of questions from many elds, including control theory, computational geometry and topology, geometrical and physical modeling, reasoning under uncertainty, probabilistic algorithms, game theory, and theoretical computer science. The Workshop on Algorithmic Foundations of Robotics (WAFR) is a single-track meeting of leading researchers in the eld of robot algorithms. Since its inception in 1994, WAFR has been held every other year, and has provided one of the premiere venues for the publication of some of the eld's most important and lasting contributions. This books contains the proceedings of the tenth WAFR, held on June 13{15 201...

    1. Modeling of higher harmonics formation in medical ultrasound systems

      DEFF Research Database (Denmark)

      Taylor, Louise Kold; Schlaikjer, Malene; Jensen, Jørgen Arendt

      2002-01-01

      The pressure eld emitted from multi-element medical ultrasound transducers can be simulated with Field II in the linear regime. By expanding this program's application to the nonlinear regime, beamforming schemes can be studied under strong focusing and high pressure levels as well, providing...... a valuable tool for simulating ultrasound harmonic imaging. An extended version of Field II is obtained by means of operator splitting. The pressure eld is calculated by propagation of the eld from the transducer through a number of planes. Every plane serves as a virtual aperture for the next plane......, and nonlinear distortion is accounted for by the lossless Burgers' Equation. This method has no plane-wave approximation and the full eects of diraction, attenuation, and nonlinear wave propagation can be observed under electronic focusing of array transducers in medical ultrasound systems. A single example...

    2. Understanding fields using strings: A review

      Indian Academy of Sciences (India)

      Sunil Mukhi

      2000-04-01

      In addition to being a prime candidate for a fundamental unified theory of all interactions in nature, string theory provides a natural setting to understand gauge field theories. This is linked to the concept of ‘-branes’: extended, solitonic excitations of string theory which can be studied using techniques of string theory and which support gauge fields localized along their world-volumes. It follows that the techniques of string theory can be very useful even for those particle physicists who are not specifically interested in unification and/or quantum gravity. In this talk I attempt to review how strings help us to understand fields. The discussion is restricted to 3+1 spacetime dimensions.

    3. Of light, of MEMS: Optical MEMS in telecommunications and beyond

      Indian Academy of Sciences (India)

      F Chollet; H B Liu; M Ashraf; B Thubthimthong; X M Zhang; G Hegde; A Asundi; V M Murukeshan; A Q Liu

      2009-08-01

      The burst of the Internet bubble in 2000 has severely quenched the pace of development in the optical MEMS field. However, it is now clear that this field is again set to move forward as not only telecommunication but many other industries are benefiting from its application. We describe in this paper some of our latest achievements in the field, showing a new type of small scale optical switch based on integrated optics, a vibration/acceleration sensor using a veryshort external cavity laser and finally, the early development result of a nano-scale tunable photonic crystal that could be used for beam steering. The diversity of the applications we demonstrate, is a clear testimony that there is indeed ‘plenty of room at the bottom’—and particularly in the natural combination of Light and MEMS!

    4. Comparison of physical Characteristics and cell culture test of hydroxyapatite/collagen composite coating on NiTi SMA: electrochemical deposition and chemically biomimetic growth

      Institute of Scientific and Technical Information of China (English)

      HU Kai; YANG Xianjin; CAI Yanli; CUI Zhenduo; WEI Qiang

      2007-01-01

      A hydroxyapatite(HA)/collagen(COL)composite coating on NiTi shape memory alloy (SMA)was prepared by electrochemical deposition(ELD)in modified simulated body fluid (MSBF).To draw comparisons of physical characteristics and bioactivity of the composite coating,the HA/COL composite coating was also prepared by chemically biomimetic growth (BG)and the ELD coating was re-soaked in MSBF again for further biomimetic growth(called EBG method in this paper).It was indicated that the c-axis of HA crystals was oriented parallel to the longitudinal direction of the COL fibril in BG and EBG coating,which could not found in ELD coating.The EBG method could induce a denser,thicker and better crystallized HA/COL coating.The cell culture test indicated that the BG coating presented better cell biocompatibility.

    5. Investigations and Applications of Field- and Photo-emitted Electron Beams from a Radio Frequency Gun

      Energy Technology Data Exchange (ETDEWEB)

      Panuganti, SriHarsha [Northern Illinois Univ., DeKalb, IL (United States)

      2015-08-01

      Production of quality electron bunches using e cient ways of generation is a crucial aspect of accelerator technology. Radio frequency electron guns are widely used to generate and rapidly accelerate electron beams to relativistic energies. In the current work, we primarily study the charge generation processes of photoemission and eld emission inside an RF gun installed at Fermilab's High Brightness Electron Source Laboratory (HBESL). Speci cally, we study and characterize second-order nonlinear photoemission from a Cesium Telluride (Cs2Te) semiconductor photocathode, and eld emission from carbon based cathodes including diamond eld emission array (DFEA) and carbon nanotube (CNT) cathodes located in the RF gun's cavity. Finally, we discuss the application experiments conducted at the facility to produce soft x-rays via inverse Compton scattering (ICS), and to generate uniformly lled ellipsoidal bunches and temporally shaped electron beams from the Cs2Te photocathode.

    6. Terahertz Technology for Defense and Security-Related Applications

      DEFF Research Database (Denmark)

      Iwaszczuk, Krzysztof

      This thesis deals with chosen aspects of terahertz (THz) technology that have potential in defense and security-related applications. A novel method for simultaneous data acquisition in time-resolved THz spectroscopy experiments is developed. This technique is demonstrated by extracting the sheet...... conductivity of photoexcited charge carriers in semi-insulating gallium arsenide. Comparison with results obtained using a standard data acquisition scheme shows that the new method minimizes errors originating from uctuations in the laser system output and timing errors in the THz pulse detection. Furthermore......, a new organic material, BNA, is proved to be a strong and broadband THz emitter which enables spectroscopy with a bandwidth twice as large as conventional spectroscopy in the eld. To access electric elds allowing exploration of THz nonlinear phenomena, eld enhancement properties of tapered parallel...

    7. Transforaminal full-endoscopic lumbar discectomy in obese patients

      Science.gov (United States)

      Bae, Jun Seok

      2016-01-01

      Background Obese patients are at risk of complications such as slower wound healing and increased infection rates after spinal surgery. Transforaminal full-endoscopic lumbar discectomy (ELD) has advantages over conventional microdiscectomy because it decreases perioperative complications and increases favorable clinical outcomes. No clinical studies have reported ELD in obese patients. The purpose of this study is to evaluate the clinical outcomes of transforaminal ELD in obese patients Methods Obesity is defined as a body mass index (BMI) of more than 30 kg/m2. Our study included 21 obese patients and 27 normal BMI patients treated by posterolateral transforaminal ELD for radiating pain caused by a single-level lumbar disc herniation with more than 2 years of follow-up. Clinical chart reviews and telephone surveys were conducted. Clinical and functional outcomes using VAS and ODI, perioperative complications, and reherniation were evaluated. Results Overall clinical and functional outcomes were improved during postoperative follow-up evaluation. There were no immediate perioperative complications, such as infection or durotomy in both groups. In obese group, three patients had late reherniations. Of these, 2 patients had tolerable pain and showed good recovery with conservative treatment; 1 patient who had undergone ELD for recurrent disc herniation underwent open microdiscectomy. In control group, two patients had early reherniation and underwent open microdiscectomy and one patient with late reherniation showed good recovery with conservative treatment. Conclusion In select cases, ELD is an effective, safe, and minimally invasive technique for obese patients. It decreases perioperative morbidity and allows for both early mobilization and early return to work. Level of Evidence: level 3b. PMID:27441176

    8. Physicians' experiences with end-of-life decision-making: Survey in 6 European countries and Australia

      Directory of Open Access Journals (Sweden)

      Mortier Freddy

      2008-02-01

      Full Text Available Abstract Background In this study we investigated (a to what extent physicians have experience with performing a range of end-of-life decisions (ELDs, (b if they have no experience with performing an ELD, would they be willing to do so under certain conditions and (c which background characteristics are associated with having experience with/or being willing to make such ELDs. Methods An anonymous questionnaire was sent to 16,486 physicians from specialities in which death is common: Australia, Belgium, Denmark, Italy, the Netherlands, Sweden and Switzerland. Results The response rate differed between countries (39–68%. The experience of foregoing life-sustaining treatment ranged between 37% and 86%: intensifying the alleviation of pain or other symptoms while taking into account possible hastening of death between 57% and 95%, and experience with deep sedation until death between 12% and 46%. Receiving a request for hastening death differed between 34% and 71%, and intentionally hastening death on the explicit request of a patient between 1% and 56%. Conclusion There are differences between countries in experiences with ELDs, in willingness to perform ELDs and in receiving requests for euthanasia or physician-assisted suicide. Foregoing treatment and intensifying alleviation of pain and symptoms are practiced and accepted by most physicians in all countries. Physicians with training in palliative care are more inclined to perform ELDs, as are those who attend to higher numbers of terminal patients. Thus, this seems not to be only a matter of opportunity, but also a matter of attitude.

    9. Application of holography in jet acoustic studies

      Indian Academy of Sciences (India)

      G Pundarika; R Lakshminarayana; T S Sheshadri

      2004-08-01

      Source strength distribution on a jet boundary was obtained from measurements using the principle of acoustic holography. Measurements were conducted in an open field. Measurement of acoustic pressure on a cylindrical twodimensional contour located close to the vibrating jet boundary was used to obtain the acoustic source strength distribution at the jet boundary. Particular attention was focussed on back projection of the sound field on to a cylindrical surface. A jet emanating from 5 mm convergent nozzle was used for the holography experiments, assuming axisymmetry. Experimental results were compared with results obtained from holography

    10. Bianchi type-I massive string magnetized barotropic perfect fluid cosmological model in bimetric theory

      Indian Academy of Sciences (India)

      S D Katore; R S Rane; K S Wankhade

      2011-04-01

      Bianchi type-I massive string cosmological model for perfect fluid distribution in the presence of magnetic field is investigated in Rosen’s [Gen. Relativ. Gravit. 4, 435 (1973)] bimetric theory of gravitation. To obtain the deterministic model in terms of cosmic time, we have used the condition $A = (B C)^n$, where n is a constant, between the metric potentials. The magnetic field is due to the electric current produced along the -axis with infinite electrical conductivity. Some physical and geometrical properties of the exhibited model are discussed and studied.

    11. ISSP Position Stand

      DEFF Research Database (Denmark)

      Ryba, Tatiana; Stambulova, Natalia; Si, Gangyan;

      2013-01-01

      The multicultural landscape of contemporary sport sets a challenge to rethink sport and exercise psychology research and practice through a culturally re␣exive lens. This ISSP Position Stand provides a rigorous synthesis and engagement with existing scholarship to outline a roadmap for future work...... in the ␣eld. The shift to culturally competent sport and exercise psychology implies: (a) recognizing hidden ethnocentric philosophical assumptions permeating much of the current theory, research, and practice; (b) transitioning to professional ethics in which difference is seen as not inherent and ␣xed...... competence in the ␣eld of sport and exercise psychology....

    12. Electric-Field-Induced Alignment of Block Copolymer/Nanoparticle Blends

      Energy Technology Data Exchange (ETDEWEB)

      Liedel, Clemens [RWTH Aachen University; Schindler, Kerstin [RWTH Aachen University; Pavan, Mariela J. [Hebrew University of Jerusalem; Lewin, Christian [RWTH Aachen University; Pester, Christian W [ORNL; Ruppel, Markus A [ORNL; Urban, Volker S [ORNL; Shenhar, Roy [Hebrew University of Jerusalem; Boker, Alexander [RWTH Aachen University

      2013-01-01

      External electric fi elds readily align birefringent block-copolymer mesophases. In this study the effect of gold nanoparticles on the electric-fi eld-induced alignment of a lamellae-forming polystyrene- block -poly(2-vinylpyridine) copolymer is assessed. Nanoparticles are homogeneously dispersed in the styrenic phase and promote the quantitative alignment of lamellar domains by substantially lowering the critical field strength above which alignment proceeds. The results suggest that the electric-fi eldassisted alignment of nanostructured block copolymer/nanoparticle composites may offer a simple way to greatly mitigate structural and orientational defects of such fi lms under benign experimental conditions.

    13. Caractérisation de la fertilité du sol en fonction des mauvaises herbes présentes

      Directory of Open Access Journals (Sweden)

      M'Biandoum, M.

      2006-01-01

      Full Text Available Soil Fertility Characterization Based on Present Weed Specie. In order to determine the soil fertility level using weed indicators, a study was conducted in 4 villages in northern Cameroon. It was based on farmers' interviews and fi eld surveys. It appears that the soil fertility status can be determined by using two groups of weeds: "guide" weeds, orienting the diagnosis according to their relative importance; "indicator" weeds, used to discriminate the two soil types (fertile/ degraded. Presence or absence of the identifi ed species allows farmers to determine whether the plot is fertile or degraded. He can then decide to use the fi eld or not.

    14. Tokamak Plasmas : Observation of floating potential asymmetry in the edge plasma of the SINP tokamak

      Indian Academy of Sciences (India)

      Krishnendu Bhattacharyya; N R Ray

      2000-11-01

      Edge plasma properties in a tokamak is an interesting subject of study from the view point of confinement and stability of tokamak plasma. The edge plasma of SINP-tokamak has been investigated using specially designed Langmuir probes. We have observed a poloidal asymmetry of floating potentials, particularly the top-bottom floating potential differences are quite noticeable, which in turn produces a vertical electric field (v). This v remains throughout the discharge but changes its direction at certain point of time which seems to depend on applied vertical magnetic field v).

    15. Echinococcus granulosus protoskolekslerinin in vitro ortamda gelişimi ve protein yapılarının SDS-PAGE yöntemi ile belirlenmesi

      OpenAIRE

      BÖLÜKBAŞ*, Cenk Soner

      2007-01-01

      Hidatidozis, Echinococcus cinsine ait türlerin larva sekillerinin (metacestod)insan ve hayvanlarda olusturdugu, hem saglık hem de ekonomik yöndenoldukça önemli, zoonotik bir hastalıktır. Türkiye'de hidatidozdan sorumluEkinokok türlerinden en yaygın olanı Echinococcus granulosus'dur.Bu çalısmada koyun kökenli hidatik kistlerden elde edilenprotoskolekslerin monofazik in vitro kültürde kistik yönde gelisimininincelenmesi ve in vitro kültür sonucunda elde edilen mikrokistleri...

    16. Production Optimization of Oil Reservoirs

      DEFF Research Database (Denmark)

      Völcker, Carsten

      With an increasing demand for oil and diculties in nding new major oil elds, research on methods to improve oil recovery from existing elds is more necessary now than ever. The subject of this thesis is to construct ecient numerical methods for simulation and optimization of oil recovery with emp...... programming (SQP) with line-search and BFGS approximations of the Hessian, and the adjoint method for ecient computation of the gradients. We demonstrate that the application of NMPC for optimal control of smart-wells has the potential to increase the economic value of an oil reservoir....

    17. Octonionic Lorenz-like condition

      Indian Academy of Sciences (India)

      Murat Tanişli; Bernard Jancewicz

      2012-02-01

      In this study, the octonion algebra and its general properties are defined by the Cayley–Dickson’s multiplication rules for octonion units. The field equations, potential equations and Maxwell equations for electromagnetism are investigated with the octonionic equations and these equations can be compared with their vectorial representations. The potential and wave equations for fields with sources are also provided. By using Maxwell equations, a Lorenz-like condition is newly suggested for electromagnetism. The existing equations including the photon mass provide the most acknowledged Lorenz condition for the magnetic monopole and the source.

    18. Giorgio Fiocco: a jolly good fellow and his research

      Directory of Open Access Journals (Sweden)

      G. Grams

      2003-06-01

      Full Text Available In celebrating the 70th birthday of Giorgio Fiocco we recall that his scientific production includes some pioneering work in a number of fi elds where he set important milestones. In particular, several of his papers represent the first published evidence in certain fi elds and triggered such a large fl ow of research, new developments and new paper production that the original source is almost forgotten. Here the topics where his contribution was of pioneering importance are briefly recalled and his original works cited.

    19. SPATIAL DISTRIBUTION IN A DRY ONION FIELD (A PRECISION FARMING APPLICATION IN TURKEY)

      OpenAIRE

      AKDEMIR, Bahattin; KORKMAZ BELLITURK; Can Burak SISMAN; Blackmore, Simon

      2006-01-01

      Objective of this study is to determine spatial variability in a dry onion fi eld and to produce a management strategy which is based on spatial variability of yield and soil components. The onion fi eld properties were determined and given in maps. Soil samples were taken to determine properties of soil such as pH, salt, humidity, CaCO3, organic matter, total N, Zn, Fe, P2O5, Ca+Mg, K, texture. Longitudinal slope was also measured. Results were used to produce maps. Most percentage of the...

    20. Accurate Ellipsometric Magnetic-Field Sensor Used to Align the LNE Watt Balance Magnetic Circuit

      OpenAIRE

      Ouedraogo, K; Topsu, S; Gayhmouni, J; Chassagne, L; Alayli, Y; Juncar, P.; Gournay, P; Bielsa, F; Geneves, G.

      2011-01-01

      International audience Magnetic-…eld sensors based on the Faraday e¤ect in a Tb 3 Ga 5 O 12 crystal are investigated in terms of their sensitivity, accuracy and directionality. The possibility of an increased sensitivity of such Faraday e¤ect sensors due to the application of multipass sensitive elements is considered. Signal-to-noise measurements on 5 mm diameter 20 mm long sample yield magnetic …elds equivalent noise of 300 nT=Hz 1=2 (= 1 s). The sensor has a sensitivity of 5.457(1) rad=...

    1. GANAS: A HYBRID ANASTIGMATIC ASPHERICAL PRIME-FOCUS CORRECTOR

      Directory of Open Access Journals (Sweden)

      F. Della Prugna

      2009-01-01

      Full Text Available The Cassegrain-Coud 1 meter Car to the focal plane of the primary f/5 l Zeiss telescope at the Venezuelan National Astronomical Observatory uses six optical elements. Removal of the secondary convex mirror gives accessspheroidal mirror, but spherical aberration, coma, astigmatism and eld curvature severely hamper its imaging capabilities. In order to carry out prime-focus imaging, we designed and manufactured a corrector group, called GAnAs, to minimize these aberrations over a circular eld of 300. The corrector group is a hybrid con guration with two thin aspherical 4th-order plates and a meniscus lens.

    2. Control of magnetic domains and domain walls by themal gradients

      OpenAIRE

      Stärk, Martin

      2015-01-01

      The aim of this work is to study heat effects in thin magnetic films to verify the theoretical prediction of domain wall motion towards a heat source. In the theory, a domain wall moves from a cold region towards the hotter part due to energy minimization processes. It is shown that no electron transport is necessary for this effect as it has been observed in insulators. An analytical model describes the effective field that acts on a domain wall as an external applied magnetic field. This is pr...

    3. Toz Maya Ekstraktı Üretimi

      OpenAIRE

      Başoğlu, Fikri; Halkman, Kadir; Ertaş, Hamdi; Çakmakçı, Lütfü

      1985-01-01

      Bira fabrikası artığı yaş mayadan toz maya ekstraktı elde edilmiş ve 2 yabancı ticari firma tarafından üretilen maya ekstraktı ile kimyasal ve mikrobiyolojik açıdan kıyaslanmıştır. Elde edilen sonuçlar bu maya ekstraktının mikrobiyolojik çalışmalarda kullanılabileceğini göstermiştir.   

    4. Field and pressure response of Yb compounds close to a quantum critical point

      Indian Academy of Sciences (India)

      C Seuring; E W Scheidt; E Bauer

      2002-05-01

      YbCu5-Al provides the possibility to tune ground state properties by a change of the valence due to the Cu/Al substitution, by pressure as well as by the application of a magnetic field. Near to the critical concentration cr ≈ 1.5 non-Fermi-liquid properties (NFL) are obvious, obeying hyperscaling. If magnetic order sets in for >1.5, the application of moderate magnetic fields quenches order and again NFL features become evident. Hyperscaling in this case indicates strongly interacting spin fluctuations.

    5. Incentives and Social Relations in the Workplace

      OpenAIRE

      Sol, Joeri

      2011-01-01

      textabstractIn this thesis, I study how organizations can incentivize a group of individuals, both in theory and by conducting …eld experiments. The …eld experiments introduce short-term team incentives in a randomly selected sample of stores that belong to a single Dutch retail chain of 128 stores. The results o¤er valuable lessons for both researchers and practitioners alike. In addition, this thesis provides a theoretical in- vestigation of the interaction between the remuneration schemes ...

    6. Renormalized energy-momentum tensor of 4 theory in curved space-time

      Indian Academy of Sciences (India)

      K G Arun; Minu Joy; V C Kuriakose

      2003-06-01

      Divergenceless expression for the energy-momentum tensor of scalar field is obtained using the momentum cut-off regularization technique. We consider a scalar field with quartic self-coupling in a spatially flat (3+1)-dimensional Robertson–Walker space-time, having arbitrary mass and coupled to gravity. As special cases, energy-momentum tensor for conformal and minimal coupling are also obtained. The energy-momentum tensor is observed to exhibit trace anomaly in curved space-time.

    7. Fractional E˙ective Action at Strong Electromagnetic Fields

      OpenAIRE

      Kleinert, Hagen; Strobel, Eckhard; Xue, She-Sheng

      2014-01-01

      In 1936, Weisskopf [K. Dan. Vidensk. Selsk. Mat. Fys. Medd. XIV (1936)] showed that for vanishing electric or magnetic fields the strong-field behavior of the one-loop Euler– Heisenberg e˙ective Lagrangian of quantum electrodynamics (QED) is logarithmic. This result can be generalized for di˙erent limits of the Lorentz invariants. The logarithmic dependence can be interpreted as a lowest-order manifestation of an anomalous power behavior of the e˙ective Lagrangian of QED.

    8. Spin tunnelling in mesoscopic systems

      Indian Academy of Sciences (India)

      Anupam Garg

      2001-02-01

      We study spin tunnelling in molecular magnets as an instance of a mesoscopic phenomenon, with special emphasis on the molecule Fe8. We show that the tunnel splitting between various pairs of Zeeman levels in this molecule oscillates as a function of applied magnetic field, vanishing completely at special points in the space of magnetic fields, known as diabolical points. This phenomena is explained in terms of two approaches, one based on spin-coherent-state path integrals, and the other on a generalization of the phase integral (or WKB) method to difference equations. Explicit formulas for the diabolical points are obtained for a model Hamiltonian.

    9. Institutional Field for Outward Foreign Direct Investment:

      DEFF Research Database (Denmark)

      Marinova, Svetla Trifonova; Child, John; Marinov, Marin Alexandrov

      2012-01-01

      The paper AU :3 explores the stages of development of an outward foreign direct investment (OFDI) institutional field during periods of major system change in big emerging economies. The state and its agencies appear to be the principal institutional entrepreneurs in developing the OFDI organizati......The paper AU :3 explores the stages of development of an outward foreign direct investment (OFDI) institutional field during periods of major system change in big emerging economies. The state and its agencies appear to be the principal institutional entrepreneurs in developing the OFDI...

    10. Electric field gradients in Hg compounds

      DEFF Research Database (Denmark)

      Arcisauskaité, Vaida; Knecht, Stefan; Sauer, Stephan P. A.;

      2012-01-01

      We examine the performance of Density Functional Theory (DFT) approaches based on the Zeroth-Order Regular Approximation (ZORA) Hamiltonian (with and without inclusion of spinorbit coupling) for predictions of electric ¿eld gradients (EFGs) at the heavy atom Hg nucleus. This is achieved by compar......We examine the performance of Density Functional Theory (DFT) approaches based on the Zeroth-Order Regular Approximation (ZORA) Hamiltonian (with and without inclusion of spinorbit coupling) for predictions of electric ¿eld gradients (EFGs) at the heavy atom Hg nucleus. This is achieved...

    11. TESLA ENERGY SPACE FOR MIE–SCHWINGER CONTINUOUS ELECTRON

      OpenAIRE

      Bulyzhenkov, I.

      2013-01-01

      Tesla reading of electricity through invisible energy ether between visible bodies corresponds to the found radial solution for a continuous source. The Mie–Schwinger distributed electron extends over the very structure of its Coulomb radial field. The electric charge is not a basic concept of Maxwell-Tesla electrodynamics but is the field energy distribution under the unified, non-dual approach to matter-energy in the nonempty world space. Electric self-energy of such a unified nonlocal carrier ...

    12. The Electrical and Dynamical Properties of Biomembranes

      DEFF Research Database (Denmark)

      Mosgaard, Lars Dalskov

      of the coupling between the membrane and the electrical eld within a universal thermodynamic framework. Within this framework, known electrical phenomena associated with lipid membranes such as o set voltage, electrostriction, piezoelectricity and exoelectricity can be captured and viewed as special cases...... into account the coupling between thermodynamical uctuations and the available heat reservoir. The next step is to combine the knowledge on lipid membranes subjected to an electrical eld with the knowledge on their relaxation behavior and use our understanding to attempt to re-evaluate the results of common...

    13. Nonlinear wave propagation through a ferromagnet with damping in (2+1) dimensions

      Indian Academy of Sciences (India)

      S G Bindu; V C Kuriakose

      2000-02-01

      We investigate how dissipation and nonlinearity can affect the electromagnetic wave propagating through a saturated ferromagnet in the presence of an external magnetic field in (2+1) dimensions. The propagation of electromagnetic waves through a ferromagnet under an external magnetic field in the presence of dissipative effect has been studied using reductive perturbation method. It is found that to the lowest order of perturbation the system of equations for the electromagnetic waves in a ferromagnet can be reduced to an integro-differential equation.

    14. Microwave absorption studies of MgB2 superconductor

      Indian Academy of Sciences (India)

      M K Bhide; R M Kadam; M D Sastry; Ajay Singh; Shashwati Sen; Manmeet Kaur; D K Aswal; S K Gupta; V C Sahni

      2002-05-01

      Microwave absorption studies have been carried out on MgB2 superconductor using a standard X-band EPR spectrometer. The modulated low-field microwave absorption signals recorded for polycrystalline (grain size ∼ 10m) samples suggested the absence of weak-link character. The field dependent direct microwave absorption has been found to obey a $\\sqrt{H}$ dependence with two different slopes, which indicated a transition from strongly pinned lattice to flux flow regime.

    15. Data mining in e-commerce: A survey

      Indian Academy of Sciences (India)

      N R Srinivasa Raghavan

      2005-04-01

      Data mining has matured as a field of basic and applied research in computer science in general and e-commerce in particular. In this paper, we survey some of the recent approaches and architectures where data mining has been applied in the fields of e-commerce and e-business. Our intent is not to survey the plethora of algorithms in data mining; instead, our current focus being e-commerce, we limit our discussion to data mining in the context of e-commerce. We also mention a few directions for further work in this domain, based on the survey.

    16. Optical spectra and spin-Hamiltonian parameters of trivalent ytterbium in lead tungstate

      Indian Academy of Sciences (India)

      W-L Feng; X-M Li

      2011-01-01

      By using crystal-field theory, the optical spectra and spin-Hamiltonian parameters (abbr. SH parameters, i.e. the anisotropic factors $g_{\\|} g_{⊥}$, and hyperfine structure constants $A_{\\|}, A_{⊥}$) of 171Yb3+ and 173Yb3+ isotopes in the tetragonal PbWO4 are calculated. The theoretical results agree well with the experimental values. The crystal-field parameters and the signs of the hyperfine structure constants for both 171Yb3+ and 173Yb3+ isotopes are determined. The validities of the theoretical results are discussed.

    17. THE EFFECT OF LOW INDUCTIVITY STATIC MAGNETIC FIELD ON SOME PLANT PATHOGEN FUNGI

      Directory of Open Access Journals (Sweden)

      Pál NAGY

      2006-02-01

      Full Text Available Growth and sporulation of phytopathogen microscopic fungi were studied under a static magnetic fi eld. The applied flux densities were 0,1, 0,5 and 1 mT. As a result of our experiments, the magnetic fi eld decreased the growth of colonies by 10 % using this fl ux density region. At the same time, the number of the developed conidia of Alternaria alternata and Curvularia inaequalis increased by 68-133 percent, but the number of Fusarium oxysporum conidia decreased by 79-83 percent.

    18. 2-D deformation of two welded half-spaces due to a blind dip-slip fault

      Indian Academy of Sciences (India)

      Sunita Rani; Neeru Bala

      2006-06-01

      The solution of two-dimensional problem of an interface breaking long inclined dip-slip fault in two welded half-spaces is well known.The purpose of this note is to obtain the corresponding solution for a blind fault.The solution is valid for arbitrary values of the fault-depth and the dip angle.Graphs showing the variation of the displacement field with the distance from the fault, for different values of fault depth and dip angle are presented.Contour maps showing the stress field around a long dip-slip fault are also obtained.

    19. Detection of Luminescent Nanodiamonds Using a Scanning Near-Field Optical Microscope with an Aperture Probe

      Science.gov (United States)

      Shershulin, V. A.; Samoylenko, S. R.; Shenderova, O. A.; Vlasov, I. I.; Konov, V. I.

      2016-09-01

      Scanning near-fi eld optical microscopy (SNOM) with an aperture probe has been used to map the luminescence of isolated submicron diamond crystallites. 532-nm laser light was used to excite luminescence of nitrogen-vacancy (NV) centers. The sizes of the analyzed diamond crystallites were determined with an atomic-force microscope. The optical resolution for the lateral dimensions of the luminescing diamond crystallites was doubled on going from confocal luminescence microscopy to scanning near-fi eld optical microscopy with a 290-nm probe aperture diameter.

    20. Tasavvufun ve Epistemolojik Bir Araç Olarak İlhamın İbn Teymiyye Düşüncesindeki Yeri

      Directory of Open Access Journals (Sweden)

      Emrah Kaya

      2016-06-01

      Full Text Available ÖZ: Bu makalenin amacı Selef anlayışına dayalı bir geleneğin savunucusu olarak tanınan İbn Teymiyye’nin tasavvufa ve tasavvufî bilginin temel aracı olan ilhama yaklaşımını çalışmaktır. Tasavvufî ıstılahları genel sûfî anlayıştan farklı bir şekilde yorumlayan İbn Teymiyye birçok kimse tarafından katı bir tasavvuf karşıtı olarak görülmüştür. Ayrıca İbn Teymiyye’nin sürekli olarak Kur’an, hadis ve Selefin düşüncelerini dinî bilginin temeli olarak sunması onun ilham ve rasyonel metotlar ile elde edilen bilgiye sıcak bakmadığı, bunlara epistemolojisinde yer vermediği düşüncesinin ortaya çıkmasına ve zaman içinde gelişmesine neden olmuştur. Hâlbuki araştırmamızın sonucunda İbn Teymiyye’nin tasavvufu belli şartlar ile kabul etmesinin yanı sıra ilhamın epistemolojik değerini de onayladığı sonucuna ulaşılmıştır. O, tasavvufu erken dönem ve sonraki dönem tasavvuf olarak incelerken, ilhamı doğaüstü olayların bir alt kategorisi olarak gördüğü ilim bâbında ele almaktadır. Tasavvufun ve ilham ile gelen bilginin Kur’an, sünnet ve Selefin düşünceleri ışığında test edilmesi gerektiğine inanan İbn Teymiyye’nin yaptığı reddetmek değil, kendi kriterleri doğrultusunda meseleyi detaylı olarak incelemektir. Bu nedenle, konuyu eleştirel ve betimsel olarak ele alan makalemiz İbn Teymiyye’nin tasavvufa ve tasavvufî bilginin temel dayanağı olan ilhama yönelik tutumuna odaklanmaktadır.ÖZET: İslam tarihinde en etkili, üretken ve tartışmalı âlimlerden biri olan İbn Teymiyye dinî bilgi edinmede en iyi ve en güvenilir yolu bulmak için samimiyetle çaba sarf etmiştir. Bu çaba sonucunda onun Kur’an, hadis, Kelâm, İslam felsefesi ve Yunan felsefesi hakkındaki muazzam bilgisi verimli eserleri vasıtasıyla müşâdehe edilebilir. Epistemolojik, teolojik ve felsefî ifadelerinin dağınık bir şekilde bulunduğu eserlerinde vahiy

    1. Single Shooting and ESDIRK Methods for adjoint-based optimization of an oil reservoir

      DEFF Research Database (Denmark)

      Capolei, Andrea; Völcker, Carsten; Frydendall, Jan;

      2012-01-01

      Conventional recovery techniques enable recovery of 10-50% of the oil in an oil eld. Advances in smart well technology and enhanced oil recovery techniques enable signicant larger recovery. To realize this potential, feedback model-based optimal control technologies are needed to manipulate the i...... for sensitivity computation. We demonstrate the procedure on a water ooding example with conventional injectors and producers....

    2. 77 FR 9687 - Endangered Species; Receipt of Applications for Permit

      Science.gov (United States)

      2012-02-17

      ... Departments and Agencies of January 21, 2009--Transparency and Open Government (74 FR 4685; January 26, 2009... Przewalski's horse (Equus przewalskii) to enhance their propagation or survival. This notification covers... CFR 17.21(g) for the Eld's deer (Rucervus eldii), barasingha (Rucervus duvaucelii), Arabian oryx...

    3. Temperature hysteretic effect and its influence on colossal magnetoresistance of La0.33Nd0.33Ca0.33MnO3

      Indian Academy of Sciences (India)

      Darshan C Kundaliya; Reeta Vij; A A Tulapurkar; U Vaidya; R Pinto; R G Kulkarni

      2002-05-01

      Electrical resistance () measurements of a bulk La0.33Nd0.33Ca0.33MnO3 perovskite in magnetic fields up to 40 kOe have revealed anomalous temperature hysteretic effects both in 0 Oe and 20 kOe magnetic fields. The sharp peak observed in the vs. plot indicates the occurrence of metal-to-insulator (M–I) transition at a temperature of MI = 110 K and 140 K, for cooling and warming paths, respectively. An applied magnetic field of 20 kOe reduces the resistance and shifts MI to 160 K and 185 K for cooling and warming, respectively. We have observed a much higher resistance in the cooling path than in the warming path leading to the hysteretic resistance ratio (cool/warm) of 200 at 110 K and 1.8 at 160 K for 0 Oe and 20 kOe, respectively. Record values of colossal magnetoresistance (CMR) have been achieved. The CMR value reaches nearly 99% in the temperature ranges of 90 K to 140 K and 90 K to 170 K for 20 kOe and 40 kOe magnetic fields in the cooling mode, respectively. The observed unusual behavior is attributed to the co-existence of La-rich and Nd-rich domains assumed to be distributed randomly in the compound.

    4. Announcement of the Diagnostics 2016 Junior Scientists Travel Award.

      Science.gov (United States)

      Editorial Office, Diagnostics

      2016-01-01

      With the goal of recognizing outstanding contributions to the field of medical diagnostics by early-career investigators, including assistant professors, postdoctoral students and PhD students, and assisting them in attending international conferences in 2016, early this year Diagnostics accepted nominations for the Junior Scientists Travel Award 2016.

    5. Thirlwall Yasasi: Turkiye Ornegi, 1982-2008

      OpenAIRE

      Rahmi Yamak; Zehra Abdioglu

      2010-01-01

      Bu calismada odemeler dengesi kisitli buyume orani olarak da bilinen Thirlwall yasasi, sermaye hareketleri ve dis borc servisi dikkate alinarak 1982-2008 donemi itibariyle Turkiye icin Kalman filtre tahmin yontemi ile test edilmistir. Elde edilen sonuclara gore, Thirlwall ve Hussain (1982) ve Elliott ve Rhodd (1999)’un odemeler dengesi kisitli buyume orani gerceklesen buyume oraninin iyi bir tahmincisidir.

    6. Effect of Nitrogen, Location and Harvesting Stage on Peppermint Productivity, Oil Content and Oil Composition

      Science.gov (United States)

      Peppermint (Mentha •piperita) is currently not a common crop in the southeastern United States. Recently, there has been an interest in peppermint as an essential oil crop for this region. In 2007, a 'eld experiment was conducted in Mississippi to determine the effect of nitrogen (N) (0 and 80 kg•ha...

    7. СПЕЦИФИКА КОММУНИКАТИВНОГО ВЗАИМОДЕЙСТВИЯ В ПРОФЕССИОНАЛЬНОЙ ЮРИДИЧЕСКОЙ ДЕЯТЕЛЬНОСТИ

      OpenAIRE

      Усманова, Е.; Брыжинская, Г.

      2013-01-01

      The article is devoted to features of communicative interaction in the legal fi eld. Аnalyzes the structure and legal means of voice communication. The most universal means of communication is a legal question and developed language skills are important for any lawyer specialization

    8. Permissive Hypotension: Potentially Harmful in the Elderly? A National Trauma Data Bank Analysis.

      Science.gov (United States)

      Bridges, Lindsay C; Waibel, Brett H; Newell, Mark A

      2015-08-01

      Permissive hypotension is a component of damage control resuscitation that aims to provide a directed, controlled resuscitation, while countering the "lethal triad." This principle has not been specifically studied in elderly (ELD) trauma patients (≥55 years). Given the ELD population's lack of physiologic reserve and risk of inadequate perfusion with "normal" blood pressures, we hypothesized that utilized a permissive hypotension strategy in ELD trauma patients would result in worse outcomes compared with younger patients (18-54 years). A retrospective review of National Trauma Data Bank reports from 2009 and 2010, identifying critically ill patients undergoing a "damage control laparotomy," was performed to determine the effect of age and systolic blood pressure on outcome. Logistic regression analysis, including evaluation of an interaction between age and admission blood pressure, was performed on mortality using admission demographics, physiology, injury severity, mechanism of injury, and in-hospital complications. Although there was a higher likelihood of death with greater age, lower admission systolic blood pressure, lower Glasgow Coma Score, increased injury severity score, and acute renal failure, a synergistic effect of age and blood pressure on mortality was not identified. Permissive hypotension appears to be a possible management strategy in ELD trauma patients.

    9. CP violation: the past, the present and the future

      Indian Academy of Sciences (India)

      A I Sanda

      2000-07-01

      We have just entered a period during which we expect considerable progress toward understanding CP violation. Here we review what we have learnt so far, and what is to be expected in the near future. To do this we cover the foundation of CP violation at a level which can be understood by physicists who are not working in this field.

    10. Inquiry Science: The Gateway to English Language Proficiency

      Science.gov (United States)

      Zwiep, Susan Gomez; Straits, William J.

      2013-01-01

      This paper presents findings from a 4-year project that developed and implemented a blended inquiry science and English Language Development (ELD) program in a large urban California school district. The sample included over 2,000 students in Kindergarten through 5th grade. Participating students' English and science achievement was compared…

    11. Heavy ion accelerator and associated developments in India

      Indian Academy of Sciences (India)

      G K Mehta

      2002-11-01

      Developments of ion accelerator and associated facilities in India are presented. Various types of accelerator facilities which are systematically built in the country through sustained development and research programs at various research centres and institutions are highlighted. Impact of accelerator in different interdisciplinary fields of research are highlighted.

    12. Acute respiratory infections in elderly people: the role of micronutrients and lifestyle

      NARCIS (Netherlands)

      Graat, J.M.

      2003-01-01

      Acute respiratory infections are the most frequent of all infectious diseases. In popular speech common cold, flu (influenza), and pneumonia all denote acute respiratory infections. Elderly people show an increased risk of these infections and their complications. In The Netherlands about 2.000 elde

    13. Controlled tunnel-coupled ferromagnetic electrodes for spin injection in organic single-crystal transistors

      NARCIS (Netherlands)

      Naber, W. J. M.; Craciun, M. F.; Lemmens, J. H. J.; Arkenbout, A. H.; Palstra, T. T. M.; Morpurgo, A. F.; van der Wiel, W. G.

      2010-01-01

      We report on single-crystal rubrene. eld-effect transistors (FETs) with ferromagnetic Co electrodes, tunnel-coupled to the conduction channel via an Al(2)O(3) tunnel barrier. Magnetic and electronic characterization shows that the Al(2)O(3) film not only protects the Co from undesired oxidation, but

    14. Play and dream your city

      DEFF Research Database (Denmark)

      Pihl, Ole Verner

      tool to investigate the creative fi eld between the digital and the analogue. There is an incompatibility embedded in the sketching process. The analogue sketch represents the known and open-ended, the digital the more concrete, while the cave technology is a more open and free dream room...... for experience. 5. Keywords: Analog, digital, game, dream, cave, intuition, and hermeneutic....

    15. Nuclear lattice simulations

      Directory of Open Access Journals (Sweden)

      Epelbaum E.

      2010-04-01

      Full Text Available We review recent progress on nuclear lattice simulations using chiral effective field theory. We discuss lattice results for dilute neutron matter at next-to-leading order, three-body forces at next-to-next-toleading order, isospin-breaking and Coulomb effects, and the binding energy of light nuclei.

    16. Nanosensors – a promising tool for cancer research

      DEFF Research Database (Denmark)

      Andersen, E.M.

      2006-01-01

      Human cell biology is emerging as a new fi eld of research at Risø. Risø’s plant scientists are able to apply their unique expertise within the analysis and manipulation of individual cells to conduct research into human cells. Risø’s core competence inthis area centres, in particular...

    17. Exploiting the Spur of the Moment to Enhance Healthy Consumption: Verbal Prompting to Increase Fruit Choices in a Self-Service Restaurant

      NARCIS (Netherlands)

      Kleef, van E.; Broek, van den O.; Trijp, van J.C.M.

      2015-01-01

      Background: People often have good intentions to eat healthily, but these inten- tions may get overruled by temporary moments of temptation. The current study examined the effectiveness of “verbal prompting” as a nudge to increase fruit salad sales in a natural setting. Methods: A ¿eld experiment wa

    18. The validation of metaphors

      NARCIS (Netherlands)

      Verhulst, F.

      2001-01-01

      In this paper we introduce models as metaphors for the description of reality We consider a number of case studies of contemporary research pollution of the NorthSea the ow eld of theWadden Sea drillstring dynamics the use of metaphors in psychoanalysis In all these cases validation of the resu

    19. Mitmekesisus ühenäolisuse asemel: suundumused arhitektuuris ja poliitikas 1980-ndate lõpul = Diversity versus uniformity: tendencies in architecture and politics since the late 1980`s / Udo Kultermann ; tõlkinud Jüri Pärni

      Index Scriptorium Estoniae

      Kultermann, Udo

      1993-01-01

      Endise Nõukogude Liidu ja sotsialistlike maade arhitektuuri suunamisel ei domineeri enam bürokraatlik tsentraliseeritud juhtimissüsteem. Arhitektid ja tellijad hakkavad otsuste tegemisel arvestama kohalikke ja regionaalseid olusid, mis on inimkesksemad, öeldes lahti poliitilisest ja kultuurilisest ühenäolisusest

    20. A Short Introduction to Kolmogorov Complexity

      NARCIS (Netherlands)

      Nannen, Volker

      2010-01-01

      This is a short introduction to Kolmogorov complexity and information theory. The interested reader is referred to the literature, especially the textbooks [CT91] and [LV97] which cover the elds of information theory and Kolmogorov complexity in depth and with all the necessary rigor.

    1. Effect of resistance-type exercise training with or without protein supplementation on cognitive functioning in frail and pre-frail elderly: Secondary analysis of a randomized, double-blind, placebo-controlled trial

      NARCIS (Netherlands)

      Nieuwerth-van de Rest, O.; Zwaluw, van der N.L.; Tieland, C.A.B.; Adam, J.J.; Hiddink, G.J.; Loon, van L.J.C.; Groot, de C.P.G.M.

      2014-01-01

      Physical activity has been proposed as one of the most effective strategies to prevent cognitive decline. Protein supplementation may exert an additive effect. The effect of resistance-type exercise training with or without protein supplementation on cognitive functioning in frail and pre-frail elde

    2. Modeling and Control of Unmanned Aerial Vehicles: A Port-Hamiltonian Approach

      NARCIS (Netherlands)

      Mersha, Abeye Y.; Carloni, Raffaella; Stramigioli, Stefano

      2011-01-01

      Recently, in robotics there is an increasing interest in the field of unmanned aerial vehicles (UAVs) due to the existence of diverse potential applications in the civilian sector. UAVs are characterized by their under-actuatedness and highly nonlinear and inherently coupled dynamics, which makes the

    3. Enhancing self-healing of lime mortars by built-in crystallization inhibitors

      NARCIS (Netherlands)

      Granneman, S.J.C.; Lubelli, B.; Van Hees, R.P.J.

      2013-01-01

      The weathering of porous materials due to the presence of salts has been known since antiquity. However, serious studies and investigations were not conducted until the 19th century. One of the fi elds of interest includes historic masonry, where salt damage can affect natural stone, brick and morta

    4. An autonomous weeding robot for organic farming

      NARCIS (Netherlands)

      Bakker, T.; Asselt, van C.J.; Bontsema, J.; Müller, J.; Straten, van G.

      2006-01-01

      The objective of this research is the replacement of hand weeding in organic farming by a device working autonomously at ¯eld level. The autonomous weeding robot was designed using a structured design approach, giving a good overview of the total design. A vehicle was developed with a diesel engine,

    5. Elder homicide in Berlin - an 11-year retrospective study of the years 2000 - 2010

      OpenAIRE

      Lang, Judith R.

      2014-01-01

      Introduction: Medical and socioeconomic improvements have led during recent decades to a steady increase of elderly people in the world. Due to increased public sensitivity to the issue, violence against eldely people is nowadays more considered by society. There is still a lack of detailed information concerning deadly aggression – there are five German studies from Bonn, Hannover, Aachen,...

    6. Fermions in light front transverse lattice quantum chromodynamics

      Indian Academy of Sciences (India)

      Dipankar Chakrabarti; Asit K De; A Harindranath

      2003-11-01

      We briefly describe motivations for studying transverse lattice QCD. Presence of constraint equation for fermion field on the light front allows different methods to put fermions on a transverse lattice. We summarize our numerical investigation of two approaches using (a) forward and backward derivatives and (b) symmetric derivatives.

    7. Understanding the Development of a Hybrid Practice of Inquiry-Based Science Instruction and Language Development: A Case Study of One Teacher's Journey through Reflections on Classroom Practice

      Science.gov (United States)

      Capitelli, Sarah; Hooper, Paula; Rankin, Lynn; Austin, Marilyn; Caven, Gennifer

      2016-01-01

      This qualitative case study looks closely at an elementary teacher who participated in professional development experiences that helped her develop a hybrid practice of using inquiry-based science to teach both science content and English language development (ELD) to her students, many of whom are English language learners (ELLs). This case study…

    8. Utilizing scale-free networks to support the search for scientific publications

      NARCIS (Netherlands)

      Hauff, C.; Nürnberger, A.; de Jong, F.M.G.; Kraaij, W.

      2006-01-01

      When searching for scientific publications, users today often rely on search engines such as Yahoo.com. Whereas searching for publications whose titles are known is considered to be an easy task, users who are looking for important publications in research fields they are unfamiliar with face greater

    9. Treatment of cancer in old age, shortcomings and challenges

      NARCIS (Netherlands)

      Wymenga, A.N.M.; Slaets, J.P.J.; Sleijfer, D. Th.

      2001-01-01

      The burden of cancer in old age is increasing as a result from both the expanding number of older persons in the population and the high and still increasing cancer incidence in this group. The goal of this article is to outline the shortcomings and challenges of the management of cancer in the elde

    10. Relativistic heavy-ion physics: Experimental overview

      Indian Academy of Sciences (India)

      Itzhak Tserruya

      2003-04-01

      The field of relativistic heavy-ion physics is reviewed with emphasis on new results and highlights from the first run of the relativistic heavy-ion collider at BNL and the 15 year research programme at the super proton synchrotron (SPS) at CERN and the AGS at BNL.

    11. ADVANCES IN ORGANIC, BIOORGANIC AND NATURAL PRODUCTS CHEMISTRY IN THE INSTITUTE OF CHEMISTRY OF THE ACADEMY OF SCIENCES OF MOLDOVA

      Directory of Open Access Journals (Sweden)

      Pavel F. Vlad

      2009-06-01

      Full Text Available This overview deals with the advances in the investigation in the fi eld of organic, bioorganic and naturalproducts chemistry as well as the biologically active compounds in the Institute of Chemistry of the Academy of Sciences of Moldova.

    12. Regular physical activity in old age. Effect on coronary heart disease risk factors and well- being.

      NARCIS (Netherlands)

      Schuit, A.J.

      1997-01-01

      Background. Regular physical activity is considered an important aspect of a healthy lifestyle. It may improve fitness, physical competence and may lower the risk of coronary heart disease (CHD). However, until now, data on the effects of regular exercise on CHD risk factors in elde

    13. Exploring the Coming Repositories of Reproducible Experiments: Challenges and Opportunities

      DEFF Research Database (Denmark)

      Freire, Juliana; Bonnet, Philippe; Shasha, Dennis

      2011-01-01

      Computational reproducibility efforts in many communities will soon give rise to validated software and data repositories of high quality. A scientist in a field may want to query the components of such repositories to build new software workflows, perhaps after adding the scientist’s own algorithm...

    14. Real option analysis in a replicating portfolio perspective

      NARCIS (Netherlands)

      Heeswijk, van Wouter; Joosten, R.A.M.G.; Huisman, Kuno; Bos, Christian

      2013-01-01

      In the last decades, a vast body of literature has arisen on real option analysis (ROA). The use of di¤erent approaches and the often implicit adoption of major assumptions may cause confusion on what ROA precisely entails, or in which situations it may be applied. We assess the �eld of real option

    15. Agency in Action: How Teachers Interpret and Implement Arizona's 4-Hour Structured English Immersion Program

      Science.gov (United States)

      Newcomer, Sarah N.; Collier, Lizabeth C.

      2015-01-01

      Sharing the findings from two qualitative case studies, analyzed together, this article examines various ways educators, both elementary teachers and teacher educators, exercise agency in their interpretation and implementation of Arizona's model of Structured English Immersion (SEI), a 4-hour English Language Development (ELD) block, which…

    16. An application of system identification techniques to impedance estimation in magnetotelluric surveying

      NARCIS (Netherlands)

      Ugryumova, Diana; Lau, Katrina; Braslavsky, Julia; Meinsma, Gjerrit

      2009-01-01

      Magnetotelluric (MT) surveying is an Electromagnetic (EM) surveying technique used in geophysics and mineral exploration. The main problem in MT surveying is the estimation of the impedance of the ground, which is obtained as the ratio between the natural environmental electric and magnetic fields m

    17. Sunny prospects for those who park their car in the shade. Solar carports are practical and may soon even be profitable; Sonnige Aussichten fuer Schattenparker. Solar-Carports sind heute schon sehr praktisch - morgen aber vielleicht auch sehr lukrativ

      Energy Technology Data Exchange (ETDEWEB)

      Siemer, Jochen

      2012-05-15

      It is easy to convert normal carports into solar carports, but this is only one of the available options. For example, there are also solar carports on a MW scale. They are an interesting alternative to open-fi9eld systems and may even become an important element of our transportation infrastructure.

    18. Bianchi type I inflationary universe in general relativity

      Indian Academy of Sciences (India)

      Raj Bali; Vimal Chand Jain

      2002-07-01

      In this paper, we have investigated Bianchi type I inflationary universe in the presence of massless scalar field with a flat potential. To get an inflationary solution, we have considered a flat region in which potential is constant. The inflationary scenario of the model is discussed in detail.

    19. A higher-dimensional Bianchi type-I inflationary Universe in general relativity

      Indian Academy of Sciences (India)

      S D Katore; K S Adhav; V G Mete; A Y Shaikh

      2012-01-01

      A five-dimensional Bianchi type-I inflationary Universe is investigated in the presence of massless scalar field with a flat potential. To get an inflationary Universe, a flat region in which the potential is constant is considered. Some physical and kinematical properties of the Universe are also discussed.

    20. Which AdS3 configurations contribute to the SCFT2 elliptic genus?

      NARCIS (Netherlands)

      Murthy, S.V.; Nawata, S.

      2011-01-01

      According to the AdS=CFT duality, the superconformal index of a superconformal eld theory should have an AdS interpretation as a Euclidean functional integral with periodic boundary conditions on the fermions. Unlike the thermal case, the Euclidean continuation of the supersymmetric AdS black hole d

    1. An Eulerian-Lagrangian finite-element method for modeling crack growth in creeping materials

      International Nuclear Information System (INIS)

      This study is concerned with the development of finite-element-solution methods for analysis of quasi-static, ductile crack growth in history-dependent materials. The mixed Eulerian-Langrangian description (ELD) kinematic model is shown to have several desirable properties for modeling inelastic crack growth. Accordingly, a variational statement based on the ELD for history-dependent materials is developed, and a new moving-grid finite-element method based on the variational statement is presented. The moving-grid finite-element method based on the variational statement is presented. The moving-grid finite-element method is applied to the analysis of transient, quasi-static, mode-III crack growth in creeping materials. A generalized Petrov-Galerkin method (GPG) is developed that simultaneously stabilizes the statement to admit L2 basis functions for the nonlinear strain field. Quasi-static, model-III crack growth in creeping materials under small-scale-yielding (SSY) conditions is considered. The GPG/ELD moving-grid finite-element formulation is used to model a transient crack-growth problem. The GPG/ELD results compare favorably with previously-published numerical results and the asymptotic solutions

    2. Implementing Structured English Immersion in Arizona: Benefits, Costs, Challenges, and Opportunities

      Science.gov (United States)

      Rios-Aguilar, Cecilia; Gonzalez-Canche, Manuel; Moll, Luis C.

      2010-01-01

      This study conducted telephone interviews with 26 randomly selected English Language Coordinators from 26 Arizona school districts with enrollment patterns that were representative of the state as whole. Three primary questions were posed to the respondents: (a) How is the 4-hour ELD block being implemented?; (b) What are the benefits of the…

    3. РЕАЛИЗАЦИЯ ПЕДАГОГИЧЕСКОГО НАСЛЕДИЯ М. МОНТЕССОРИ В ИНКЛЮЗИВНОМ ОБРАЗОВАНИИ ДЕТЕЙ С ОГРАНИЧЕННЫМИ ВОЗМОЖНОСТЯМИ ЗДОРОВЬЯ

      Directory of Open Access Journals (Sweden)

      Г. В. Брыжинская

      2013-12-01

      Full Text Available Аnalyzes the conditions to improve the quality of inclusive education, consider the possibility of Montessori education in the fi eld of education, upbringing and development of children with various physical and intellectual disabilities together with normally developing children in the framework of a common educational space.

    4. Protein-Tyrosine Phosphorylation in Bacillus subtilis

      DEFF Research Database (Denmark)

      Mijakovic, Ivan; Petranovic, Dina; Bottini, N.;

      2005-01-01

      phosphorylation, indicating that this post-translational modifi cation could regulate physiological processes ranging from stress response and exopolysaccharide synthesis to DNA metabolism. Some interesting work in this fi eld was done in Bacillus subtilis , and we here present the current state of knowledge...

    5. Field Independence: Reviewing the Evidence

      Science.gov (United States)

      Evans, Carol; Richardson, John T. E.; Waring, Michael

      2013-01-01

      Background: The construct of ?eld independence (FI) remains one of the most widely cited notions in research on cognitive style and on learning and instruction more generally. However, a great deal of confusion continues to exist around the de?nition of FI, its measurement, and the interpretation of research results, all of which have served to…

    6. Numerical study for production of space charge within the stratiform cloud

      Indian Academy of Sciences (India)

      A K Srivastava; S N Tripathi

      2010-10-01

      One dimensional numerical model has been developed to predict the production of space charge and variations in other electrical parameters within the low level stratiform type of cloud having very weak vertical motion.Non-linear coupled differential equations which govern ion concentrations,charged and neutral droplet concentrations and electric field were used.Symmetry has been observed in all the electrical parameters within the cloud.The magnitude of average positive ion concentrations was observed to be high as compared to the negative ion concentrations,which is due to low scavenging rate of positive ions than the negative ions,highly attributed to their mobilities.The rate of scavenging of ions affects the concentration of charged droplets,which eventually influence the electric field and thus the space charge density within the cloud.Maximum electric field (max) was observed at middle of the cloud whereas minimum was observed at both the edges of the cloud.Minimum electric field (min) was found to be equal and constant (∼27Vm−1)for any drop concentration.Net positive and negative space charges were observed at the top and bottom of the cloud,respectively.The simulated results show some discrepancies to the natural condition, which are due to simulations made under some basic assumptions and limitations and that will be incorporated in the future studies for natural cloud condition.

    7. An Algorithm for the Decomposition of Semisimple Lie Algebras

      NARCIS (Netherlands)

      Graaf, W.A. de

      2001-01-01

      We consider the problem of decomposing a semisimple Lie algebra dened over a eld of characteristic zero as a direct sum of its simple ideals The method is based on the decomposition of the action of a Cartan subalgebra An implementation of the algorithm in the system ELIAS is discussed at the end of

    8. RFID Teknolojisi: Firsatlar, Engeller ve Ornek uygulamalar

      OpenAIRE

      Ömür Y.Saatcioglu

      2006-01-01

      Yenilikler ozellikle teknoloji tabanli yenilikler rekabet ustunlugu elde etmek isteyen firmalar icin cok onemlidir. Sureclerini surekli olarak gelistirmeyi amaclanan firmalarin gerceklestirmesi gereken faaliyetlerden biri yeni teknolojilerin degerlendirilmesidir. RFID teknolojisi de ozellikle son yillarda onem kazanan bir teknolojidir. Bu makalede RFID teknolojisi kapsamli olarak tanitilmaktadir. RFID teknolojisinin tarihsel gelisimi ve RFID sistemleri icin gerekli altyapi gereksinimleri acik...

    9. Ferrobasalts from the Central Indian Ocean Basin

      Digital Repository Service at National Institute of Oceanography (India)

      Iyer, S.D.; Mukhopadhyay, R.; Popko, D.C.

      to 21). Journal of Geophysi- cal Research 98: 13,863}13,878 Hekinian R (1982) Petrology of the Ocean Floor. Amsterdam; Elsevier Scienti"c Publishers, 393 pp Iyer SD and Sudhakar M (1993) Coexistence of pumice and manga- nese nodule "elds...

    10. Two problems in thermal field theory

      Indian Academy of Sciences (India)

      François Gelis

      2000-07-01

      In this talk, I review recent progress made in two areas of thermal field theory. In particular, I discuss various approaches for the calculation of the quark gluon plasma thermodynamical properties, and the problem of its photon production rate.

    11. Vulnerabilities as monsters: the cultural foundations of computer security (extended abstract)

      NARCIS (Netherlands)

      Pieters, W.; Consoli, L.

      2006-01-01

      This paper is part of a project to investigate the philosophical aspects of the scientific discipline of information security. This eld of research investigates the means to protect information systems against attacks, typically by modelling the system according to a certain security model, and veri

    12. Employees' eldercare demands, strain, and perceived support

      NARCIS (Netherlands)

      Zacher, Hannes; Schulz, Heiko

      2015-01-01

      Purpose - In many countries, both the number of older people in need of care and the number of employed caregivers of elderly relatives will increase over the next decades. The purpose of this paper is to examine the extent to which perceived organizational, supervisor, and coworker support for elde

    13. Electronic transport through nanowires: a real-space finite-difference approach

      NARCIS (Netherlands)

      Khomyakov, Petr

      2006-01-01

      Nanoelectronics is a fast developing ¯eld. Therefore understanding of the electronic transport at the nanoscale is currently of great interest. This thesis "Electronic transport through nanowires: a real-space ¯nite-difference approach" aims at a general theoretical treatment of coherent electronic

    14. Symmetry structure and phase transitions

      Indian Academy of Sciences (India)

      Ashok Goyal; Meenu Dahiya; Deepak Chandra

      2003-05-01

      We study chiral symmetry structure at finite density and temperature in the presence of external magnetic field and gravity, a situation relevant in the early Universe and in the core of compact stars. We then investigate the dynamical evolution of phase transition in the expanding early Universe and possible formation of quark nuggets and their survival.

    15. Barium as a productivity proxy in continental margin sediments: A study from the eastern Arabian Sea

      Digital Repository Service at National Institute of Oceanography (India)

      PrakashBabu, C.; Brumsack, H.-J.; Schnetger, B.; Boettcher, M.E.

      .E., Price, N.B., 1983. Geochemistry of Namibian shelf sediments. In: Suess, E., Thiede, J. (Eds.), Coastal Up- welling, Its Sedimentary Record. Plenum, New York, pp. 337^375. Can¢eld, D.E., JC214rgensen, B.B., Fossing, H., Glud, R., Gun- dersen, J., Ramsing...

    16. First experience with the new coupling loss induced quench system

      NARCIS (Netherlands)

      Ravaioli, E.; Datskov, V.I.; Dudarev, A.V.; Kirby, G.; Sperin, K.A.; Kate, ten H.H.J.; Verweij, A.P.

      2014-01-01

      New-generation high-field superconducting magnets pose a challenge relating to the protection of the coil winding pack in the case of a quench. The high stored energy per unit volume calls for a very efficient quench detection and fast quench propagation in order to avoid damage due to overheating. A

    17. Large compact dimensions and high energy experiments

      Indian Academy of Sciences (India)

      Sreerup Raychaudhuri

      2000-07-01

      Models of spacetime with extra compact dimensions and having the Standard Model fields confined to a narrow slice of 4-dimensional spacetime can have strong gravitational effects at the TeV scale as well as electroweak-strength interactions at present-day colliders. Phenomenological consequences of such models are reviewed, with special emphasis on collider signatures.

    18. A Review of Recovery Mechanisms of Ionically Modified Waterflood in Carbonate Reservoirs

      DEFF Research Database (Denmark)

      Sohal, Muhammad Adeel Nassar; Thyne, Geoffrey; Søgaard, Erik Gydesen

      2016-01-01

      . This process has been evaluated as a wettability-modifying agent in carbonates and captured the global research focus in water-based enhanced oil recovery (EOR) methods. This paper provides a comprehensive review of the published research to speed the process of further investigations in this field. The review...

    19. Lifestyle, nutritional status, health, and mortality in elderly people across Europe: a review of the longitudinal results of the SENECA study

      NARCIS (Netherlands)

      Groot, de C.P.G.M.; Verheijden, M.W.; Henauw, de S.; Schroll, M.; Staveren, van W.A.

      2004-01-01

      This article provides an overview of the longitudinal Survey in Europe on Nutrition and the Elderly: a Concerted Action (SENECA) study, which was designed to assess differences in dietary and lifestyle factors among elderly Europeans, and to identify the factors that contribute to healthy aging. Eld

    20. Test particle trajectories near cosmic strings

      Indian Academy of Sciences (India)

      Farook Rahaman; Subenoy Chakraborty; K Maity

      2002-01-01

      We present a detailed analysis of the motion of test particle in the gravitational field of cosmic strings in different situations using the Hamilton–Jacobi (H–J) formalism. We have discussed the trajectories near static cosmic string, cosmic string in Brans–Dicke theory and cosmic string in dilaton gravity.

    1. Embedded System for ECG Biometrics

      OpenAIRE

      Matos, André Cigarro; Lourenço, André; Nascimento, José M. P.

      2013-01-01

      Comunication in Internationa Conference with Peer Review First International Congress on Cardiovasular Technologies - CARDIOTECHNIX, Vilamoura, Portugal, 2013 Biometric recognition has recently emerged as part of applications where the privacy of the information is crucial, as in the health care field. This paper presents an embedded system for individual recognition based on Electrocardiographic (ECG) biometrics. The proposed system implements a real...

    2. Normal Forms for Periodic Orbits of Real Vector Fields

      Institute of Scientific and Technical Information of China (English)

      Ping WANG; Hao WU; Wei Gu LI

      2008-01-01

      We consider normal forms of real vector .elds near periodic orbits and provide sufficient onditions for their smooth linearization. In addition, the main results also assert the existence of ertical local foliations, whose leaves are all transversal to the periodic orbit.

    3. Single cell electroporation using microfluidic devices

      NARCIS (Netherlands)

      Le Gac, S.; Berg, van den A.; Lindstrom, S.; Andersson-Svahn, S.M.H.

      2012-01-01

      Electroporation is a powerful technique to increase the permeability of cell membranes and subsequently introduce foreign materials into cells. Pores are created in the cell membrane upon application of an electric fi eld (kV/cm). Most applications employ bulk electroporation, at the scale of 1 mL o

    4. A "proof-reading" of Some Issues in Cryptography

      DEFF Research Database (Denmark)

      Damgård, Ivan Bjerre

      2007-01-01

      In this paper, we identify some issues in the interplay between practice and theory in cryptography, issues that have repeatedly appeared in different incarnations over the years. These issues are related to fundamental concepts in the eld, e.g., to what extent we can prove that a system is secure...

    5. Recent advances in lattice gauge theories

      Indian Academy of Sciences (India)

      R V Gavai

      2000-04-01

      Recent progress in the field of lattice gauge theories is briefly reviewed for a nonspecialist audience. While the emphasis is on the latest and more definitive results that have emerged prior to this symposium, an effort has been made to provide them with minimal technicalities.

    6. Care Competence in Nursing Education

      OpenAIRE

      Bagnasco, Annamaria; Rosa, Francesca; Aleo, Giuseppe; Sasso, Loredana

      2012-01-01

      We present this commentary to discuss the main European initiatives and issues regarding education for health professionals, specifi cally nurses, both to stimulate international debate and to learn more about what is happening in this fi eld in other continents.(Published: 26 April 2012)Keywords: nursing education , competence , critical thinking , competence-based education DOI: 10.3109/21614083.2012.677711

    7. Calculation of critical fault recovery time for nonlinear systems based on region of attraction analysis

      DEFF Research Database (Denmark)

      Tabatabaeipour, Mojtaba; Blanke, Mogens

      2014-01-01

      of a system. It must be guaranteed that the trajectory of a system subject to fault remains in the region of attraction (ROA) of the post-fault system during this time. This paper proposes a new algorithm to compute the critical fault recovery time for nonlinear systems with polynomial vector elds using sum...

    8. Application of digital image correlation method for analysing crack variation of reinforced concrete beams

      Indian Academy of Sciences (India)

      Ming-Hsiang Shih; Wen-Pei Sung

      2013-08-01

      The Digital Image Correlation (DIC) method is a fast-growing emerging technology that provides a low-cost method for measuring the strain of an object. In this study, the feasibility of using this method to observe cracks developed in reinforced concrete beams will be explored so that a practical application can be proposed. The DIC method has been applied for analysing the field of surface displacement and strain; it is not applicable for measuring non-continuous field of displacement. However, if a singular point (i.e., crack points) can be considered as the area of concentrated strain by imitating the treatment of micro-cracks using the finite element method, the region of concentrated strain field based on analyses of digital images can be applied for determining the locations of cracks. Laboratory results show that cracks developed in reinforced cement beams can be observed with a good precision using the von Mises strain field, and that smaller grids lead to clearer crack images. In addition to identifying visible cracks, the DIC image analysis will enable researchers to identify minute cracks that are not visible to naked eyes. Additionally, the DIC method has more accuracy and precision than visual observation for analysing crack loadings so that earlier warnings can be realized before cracks develop in the specimen.

    9. Correction: Vázquez-Arellano, M., et al. 3-D Imaging Systems for Agricultural Applications—A Review. Sensors 2016, 16, 618

      Directory of Open Access Journals (Sweden)

      Manuel Vázquez-Arellano

      2016-07-01

      Full Text Available The authors wish to make the following corrections to Table 1 of the title paper [1]: the working environment of the PlantEye platform should be changed from “Greenhouse” to “Open field, Greenhouse” and the shadowing device of the Scanalyzer platform should be changed from “‘√” to “x”. [...

    10. Gear fatigue damage for a 500 kW wind turbine exposed to increasing turbulence using a flexible multibody model

      DEFF Research Database (Denmark)

      Jørgensen, Martin Felix; Pedersen, Niels Leergaard; Sørensen, Jens Nørkær

      2014-01-01

      This paper investigates gear tooth fatigue damage in a 500 kW wind turbine using FLEX5 and own multibody code. FLEX5 provides the physical wind eld, rotor and generator torque and the multibody code is used for obtaining gear tooth reaction forces in the planetary gearbox. Dierent turbulence levels...

    11. Astronomical Content in Rongorongo Tablet Keiti

      DEFF Research Database (Denmark)

      Wieczorek, Rafal

      2011-01-01

      Th e fi eld of rongorongo research: the study of Easter Island’s native script is in a peculiar state at the moment. While relative progress has been made in structural and statistical analysis in the last decades, at the level of both single glyphs as well as entire texts, little to no advancement...

    12. Inquiry learning

      NARCIS (Netherlands)

      Lazonder, Ard W.; Spector, J.M.; Merrill, M.D.; Elen, J.; Bishop, M.J.

      2014-01-01

      The basic tenet of inquiry learning is that students arrive at an understanding of the subject matter by engaging in self-directed investigations. The foundations of this mode of learning are derived from three related fi elds of study. Psychological research on scienti fi c reasoning revolves aroun

    13. Metformin protects the skeletal muscle glycogen stores against alterations inherent to functional limitation

      Directory of Open Access Journals (Sweden)

      Paula Lima Bosi

      2008-04-01

      Full Text Available The aim of this study was to evaluate the glycogen content (GC of the rat hind limb muscles submitted to joint immobilization, either associated with metformin treatment (M, 1,4mg.ml-1 or not. In the metformin group, there was a significant increase in the GC (soleus - S 65% , white gastrocnemius - WG 30.5%, red gastrocnemius- RG31.7%, extensor digitorum longus - EDL 44%, tibialis anterior- TA 77.4%. The immobilization significantly reduced the GC (S 31.6%, WG 56.6%, RG 39.1%, ELD 41.7%, TA 45.2% and weight (S 34.2% and ELD 27%, whereas in the group immobilized with the metformin, there was an increase in the GC of all the muscles (S 177%, WG 290%, RG 172%,ELD 47%, TA 217%, in addition to minimizing the weight loss of S (29.6% and ELD (27.8%.O objetivo deste estudo foi avaliar o conteúdo de glicogênio (GLI da musculatura da pata posterior de ratos submetidos à imobilização articular, associado ou não ao tratamento com metformina (MET, 1,4 mg.ml -1 no período de sete dias. No grupo metformina, houve elevação significativa nas RG (65% no sóleo - S, 30.5% no gastrocnêmio branco - GB, 31.7% no gastrocnêmio vermelho - GV , 44% no extensor longo dos dedos - EDL e de 77.4% no tibial anterior - TA . A imobilização reduziu significativamente as RG (S 31,6%, GB 56,6%, GV 39,1%, ELD 41,7%, TA 45,2% e peso (S 34,2% e ELD 27%, já no grupo imobilizado com metformina houve o aumento das RG de todos os músculos (S 177%, GB 290%, GV 172%,EDL 47%, TA 217%, além de minimizar a perda de peso do S (29,6% e ELD (27,8%.

    14. Treatment of osteoporosis with eldecalcitol, a new vitamin D analog: a comprehensive review and meta-analysis of randomized clinical trials

      Directory of Open Access Journals (Sweden)

      Xu Z

      2016-01-01

      Full Text Available Zhixing Xu,1 Changchun Fan,2 Xuechun Zhao,3 Hairong Tao1 1Department of Orthopedic Surgery, The Third People’s Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, People’s Republic of China; 2Department of Orthopedic Surgery, Jinan Military General Hospital, 3Department of Orthopedic Surgery, The Third Hospital of Jinan City, Jinan, People’s Republic of China Objective: Eldecalcitol (ELD is an active form of vitamin D analog that has been approved for the treatment of osteoporosis in Japan. Over recent years, a number of multicenter, randomized controlled clinical trials have been conducted. Our goal is to comprehensively summarize the results from these studies.Methods: We searched the databases MEDLINE, EMBASE, and Cochrane Central Register of Controlled Trials up to February 28, 2015. Each database was searched using search terms “Eldecalcitol” and “ED-71” and the results were combined. The retrieved data from three independent clinical trials included a total of 1,332 patients with osteoporosis. After the data were pooled from three trials, RevMan software was used to conduct meta-analyses to determine the effects of ELD on bone mineral density (BMD and bone turnover marker (BTM type I collagen amino-terminal telopeptide (NTX. Effects of ELD on some of the bone formation and bone resorption parameters, incidence of vertebral fractures at the lower spine, and health-related quality of life (HRQOL in patients with osteoporosis were also summarized. Results: With a test for overall effect Z=6.35, ELD could increase lumbar BMD (P<0.00001. In comparison with alphacalcidol, ELD suppressed the NTX level to a greater degree (test for overall effect Z=3.82, P<0.0001. ELD was also found to suppress bone alkaline phosphatase (BALP by 19% (P<0.01 and osteocalcin by 19% (P<0.01 at the dose of 0.75 µg/day. Compared to alfacalcidol, ELD showed higher potency in suppressing serum BALP (26±9 vs 32±11 U/L, P<0

    15. Idiopathic normal pressure hydrocephalus: diagnostic and predictive value of clinical testing, lumbar drainage, and CSF dynamics.

      Science.gov (United States)

      Mahr, Cynthia V; Dengl, Markus; Nestler, Ulf; Reiss-Zimmermann, Martin; Eichner, Gerrit; Preuß, Matthias; Meixensberger, Jürgen

      2016-09-01

      OBJECTIVE The aim of the study was to analyze the diagnostic and predictive values of clinical tests, CSF dynamics, and intracranial pulsatility tests, compared with external lumbar drainage (ELD), for shunt response in patients with idiopathic normal pressure hydrocephalus (iNPH). METHODS Sixty-eight consecutive patients with suspected iNPH were prospectively evaluated. Preoperative assessment included clinical tests, overnight intracranial pressure (ICP) monitoring, lumbar infusion test (LIFT), and ELD for 24-72 hours. Simple and multiple linear regression analyses were conducted to identify predictive parameters concerning the outcome after shunt therapy. RESULTS Positive response to ELD correctly predicted improvement after CSF diversion in 87.9% of the patients. A Mini-Mental State Examination (MMSE) value below 21 was associated with nonresponse after shunt insertion (specificity 93%, sensitivity 67%). Resistance to outflow of CSF (ROut) > 12 mm Hg/ml/min was false negative in 21% of patients. Intracranial pulsatility parameters yielded different results in various parameters (correlation coefficient between pulse amplitude and ICP, slow wave amplitude, and mean ICP) but did not correlate to outcome. In multiple linear regression analysis, a calculation of presurgical MMSE versus the value after ELD, ROut, and ICP amplitude quotient during LIFT was significantly associated with outcome (p = 0.04). CONCLUSIONS Despite a multitude of invasive tests, presurgical clinical testing and response to ELD yielded the best prediction for improvement of symptoms following surgery. The complication rate of invasive testing was 5.4%. Multiple and simple linear regression analyses indicated that outcome can only be predicted by a combination of parameters, in accordance with a multifactorial pathogenesis of iNPH. PMID:26824377

    16. Basic Concepts in Cyber Warfare

      Directory of Open Access Journals (Sweden)

      Lior Tabansky

      2011-05-01

      Full Text Available Developments in computers have made possible far reaching changes in all areas of life, and the rapid progress in computing, communications, and software has led to a dramatic reduction in the cost of producing, processing, and disseminating information. Information technologies continue to develop at an accelerated pace, and a new era has arisen in the information revolution. The rapid growth in the fields of computing and communications and the ongoing improvement in the performance of computerized systems have created a new space in the world. Cyberspace, a space created not in nature but by human beings. The interface between a new topic that enables unprecedented capabilities, a technical field that demands professional understanding, and mass media that compete for the consumer creates – perhaps predictably – the potential for obfuscation. National security has also been affected by the information revolution and the cyberspace phenomenon. Smart use of new technologies allows previously unknown capabilities, which together with new methods have generated a qualitative change in the military field. However, a public discussion on the issue of cyber security, as of other new hi-tech fields, is lacking in Israel. This essay focuses on the question of national security in light of the cyberspace phenomenon. It aims to survey the field and create a common language for a fruitful public discussion of the developing issue of cyber security, proposing operative definitions for the issues that can be applied in a discussion of Israel’s national security. The essay first addresses the properties of cyberspace, its inherent vulnerabilities, and possible threats within its realm, and then proceeds to related issues of defense, attack, and deterrence in cyberspace.

    17. Depositional conditions of the coal-bearing Hirka Formation beneath Late Miocene explosive volcanic products in NW central Anatolia, Turkey

      Indian Academy of Sciences (India)

      Mehmet Şener

      2007-04-01

      This work focuses on the relationship between the coal deposition and explosive volcanism of the Miocene basin, NW central Anatolia, Turkey. The coal-bearing Hirka Formation was deposited over the Galatian Andesitic Complex and/or massive lagoonal environments during the Miocene. The investigated lignite is a high ash (from 32 to 58%) and sulphur (from 1.43 to 3.03%) lignite which is petrographically characterised by a high humunite content. The mineral matter of the studied lignite samples is made up of mainly clay minerals (illite–smectite and kaolinite), plagioclase and quartz in Bolu coal field, clay minerals (illite–smectite, smectite and illite), quartz, calcite, plagioclase and gypsum in Seben coal field, quartz, K-feldspar, plagioclase and clay minerals (kaolinite and illite) in Kıbrıscık, and dolomite, quartz, clinoptilolite, opal CT and gypsum in C¸ amlıdere coal field. The differences in these four types of lignite with specific mineralogical patterns may be due to the explosive volcanic events and depositional conditions which changed from one coal field to the others. There is a zonation from SW to SE in the studied area for zeolites such as Opal CT+smectite-clinoptilolite-analcime-K-feldspar. Carbonate minerals are commonly calcite in Seben and Kıbrıscık coal fields. In Bolu, coal samples are devoid of calcite and dolomite. These analyses show that there is an increase in the amount of Mg and a decrease in the amount of Na from the northwestern part to the southern part in the study area.

    18. Static charged spheres with anisotropic pressure in general relativity

      Indian Academy of Sciences (India)

      J Krishna Rao; M Annapurna; M M Trivedi

      2000-02-01

      We report a generalization of our earlier formalism [Pramana, 54, 663 (1998)] to obtain exact solutions of Einstein–Maxwell's equations for static spheres filled with a charged fluid having anisotropic pressure and of null conductivity. Defining new variables: = (4/3)(ρ+)2, =4 2, r=4 pr2, ⊥}=4 ⊥2 [ρ,(=-(1/2)1414), r, ⊥ being respectively the energy densities of matter and electrostatic fields, radial and transverse fluid pressures whereas denotes the eigenvalue of the conformal Weyl tensor and interpreted as the energy density of the free gravitational field], we have recast Einstein's field equations into a form easy to integrate. Since the system is underdetermined we make the following assumptions to solve the field equations (i) =r=(2}/2)+2, ⊥=k1r, =2r; 2, (> 0), 1, 2 being constants with =((1+2)/3+2) and (ii) +=(2/2)+2, =r, ⊥-r=, with and as constants. In both cases the field equations are integrated completely. The first solution is regular in the metric as well as physical variables for all values of > 0. Even though the second solution contains terms like /2 since (0) = 0 it is argued that the pressure anisotropy, caused by the electric flux near the centre, can be made to vanish reducing it to the generalized Cooperstock–de la Cruz solution given in [14]. The interior solutions are shown to match with the exterior Reissner–Nordstrom solution over a fixed boundary.

    19. varying elastic parameters distributions

      KAUST Repository

      Moussawi, Ali

      2014-12-01

      The experimental identication of mechanical properties is crucial in mechanics for understanding material behavior and for the development of numerical models. Classical identi cation procedures employ standard shaped specimens, assume that the mechanical elds in the object are homogeneous, and recover global properties. Thus, multiple tests are required for full characterization of a heterogeneous object, leading to a time consuming and costly process. The development of non-contact, full- eld measurement techniques from which complex kinematic elds can be recorded has opened the door to a new way of thinking. From the identi cation point of view, suitable methods can be used to process these complex kinematic elds in order to recover multiple spatially varying parameters through one test or a few tests. The requirement is the development of identi cation techniques that can process these complex experimental data. This thesis introduces a novel identi cation technique called the constitutive compatibility method. The key idea is to de ne stresses as compatible with the observed kinematic eld through the chosen class of constitutive equation, making possible the uncoupling of the identi cation of stress from the identi cation of the material parameters. This uncoupling leads to parametrized solutions in cases where 5 the solution is non-unique (due to unknown traction boundary conditions) as demonstrated on 2D numerical examples. First the theory is outlined and the method is demonstrated in 2D applications. Second, the method is implemented within a domain decomposition framework in order to reduce the cost for processing very large problems. Finally, it is extended to 3D numerical examples. Promising results are shown for 2D and 3D problems.

    20. ESKISEHIR LOCAL PRESS FROM LOCAL PRESS MANAGERS POINT OF VIEW

      OpenAIRE

      Birsen, Yrd.Doç.Dr. Haluk

      2011-01-01

      Bu çalışmada birbirini ikame eden ya da tamamlayan birden fazla medyayı gün içinde kullanma yetisine sahip izlerkitlenin haber talebini karşılamak, bu yolla ekonomik bir girdi elde etmek, elde edilen girdi ile varlığını sürdürmek zorunda olan yerel basının sorunları, Eskişehir Yerel Basını yöneticilerinin ağzından dinlenmiş ve derlenmiştir. Bu yanıyla betimleyici bir çalışma olan araştırmada amaca ulaşmak için nitelikli çalışan gereksinimi, teknoloji sahipliği ve haber kaynakları ile kurulan ...

    1. A general approach to bosonization

      Indian Academy of Sciences (India)

      Girish S Setulur; V Meera

      2007-10-01

      We summarize recent developments in the field of higher dimensional bosonization made by Setlur and collaborators and propose a general formula for the field operator in terms of currents and densities in one dimension using a new ingredient known as a `singular complex number'. Using this formalism, we compute the Green function of the homogeneous electron gas in one spatial dimension with short-range interaction leading to the Luttinger liquid and also with long-range interactions that lead to a Wigner crystal whose momentum distribution computed recently exhibits essential singularities. We generalize the formalism to finite temperature by combining with the author's hydrodynamic approach. The one-particle Green function of this system with essential singularities cannot be easily computed using the traditional approach to bosonization which involves the introduction of momentum cutoffs, hence the more general approach of the present formalism is proposed as a suitable alternative.

    2. Effect of ionized plasma medium on the radiation from a RITMA structure on ferrite substrate

      Indian Academy of Sciences (India)

      V Bhardwaj; V K Tiwari; D Bhatnagar; J S Saini; K B Sharma

      2003-12-01

      This paper presents theoretical investigations on the radiation properties of a right isosceles triangular microstrip antenna (RITMA) printed on a magnetized ferrite substrate Ni0.62Co0.02Fe1.948O4 in the presence of ionized plasma medium. The theoretical study on RITMA structure in free space is carried out in TM11 mode of excitation by applying cavity model-based modal expansion technique while hydrodynamic theory is used for its analysis in plasma medium. By varying the bias magnetic field, far-field radiation patterns in free space and plasma medium are obtained which in turn are applied in computing radiated power, directivity, quality factor and bandwidth of antenna. It is found that the presence of plasma medium affects the performance of RITMA structure significantly.

    3. Effect of swift heavy ion irradiation on surface resistance of DyBa2Cu3O7- thin films at microwave frequencies

      Indian Academy of Sciences (India)

      Ujwala Ail; Tamalika Banerjee; A R Bhangale; D Kanjilal; R Pinto

      2002-05-01

      We report the observation of a pronounced peak in surface resistance at microwave frequencies of 4.88 GHz and 9.55 GHz and its disappearance after irradiation with swift ions in laser ablated DyBa2Cu3O7- (DBCO) thin films. The measurements were carried out in zero field as well as in the presence of magnetic fields (up to 0.8 T). The films were irradiated using 90 MeV oxygen ions at Nuclear Science Centre, New Delhi at a fluence of 3 × 1013 ions/cm2. Introduction of point defects and extended defects after irradiation suppresses the peak at 9.55 GHz whereas no suppression is observed at 4.88 GHz. These results and the vortex dynamics in the films at microwave frequencies before and after irradiation are discussed.

    4. Fast Beam Intensity Measurements for the LHC

      CERN Document Server

      Belohrad, D

      Particle accelerators are constructed and operated for a wide variety of applications. In particle physics - the branch of physics that studies the elementary constituents of matter and forces between them - high energy accelerators are used to look deep into the structure of matter. Medical particle accelerators are used for example in medicine to treat tumours [31], in imaging techniques such as Positron Emission Tomography (PET) [24], or for the radio-isotopes production. They also serve in many other industrial branches, e.g. geology, radiocarbon dating [39], molecular complex spectroscopy, lithography, food preservation etc. The eld of accelerator technology draws knowledge and expertise from a wide range of scientic disciplines and uses the latest technical knowledge. The incomplete list of covered disciplines includes mathematics, physics, electronics, computing, electromagnetic eld technology, microwave technology, cryogenics, vacuum technology, special materials, mechanical engineering or civil engin...

    5. Hydrodynamic stability and stellar oscillations

      Indian Academy of Sciences (India)

      H M Antia

      2011-07-01

      Chandrasekhar’s monograph on Hydrodynamic and hydromagnetic stability, published in 1961, is a standard reference on linear stability theory. It gives a detailed account of stability of fluid flow in a variety of circumstances, including convection, stability of Couette flow, Rayleigh–Taylor instability, Kelvin–Helmholtz instability as well as the Jean’s instability for star formation. In most cases he has extended these studies to include effects of rotation and magnetic field. In a later paper he has given a variational formulation for equations of non-radial stellar oscillations. This forms the basis for helioseismic inversion techniques as well as extension to include the effect of rotation, magnetic field and other large-scale flows using a perturbation treatment.

    6. THE PIXHAWK OPEN-SOURCE COMPUTER VISION FRAMEWORK FOR MAVS

      Directory of Open Access Journals (Sweden)

      L. Meier

      2012-09-01

      Full Text Available Unmanned aerial vehicles (UAV and micro air vehicles (MAV are already intensively used in geodetic applications. State of the art autonomous systems are however geared towards the application area in safe and obstacle-free altitudes greater than 30 meters. Applications at lower altitudes still require a human pilot. A new application field will be the reconstruction of structures and buildings, including the facades and roofs, with semi-autonomous MAVs. Ongoing research in the MAV robotics field is focusing on enabling this system class to operate at lower altitudes in proximity to nearby obstacles and humans. PIXHAWK is an open source and open hardware toolkit for this purpose. The quadrotor design is optimized for onboard computer vision and can connect up to four cameras to its onboard computer. The validity of the system design is shown with a fully autonomous capture flight along a building.

    7. Applications of Novel X-Ray Imaging Modalities in Food Science

      DEFF Research Database (Denmark)

      Nielsen, Mikkel Schou

      science for understanding and designing food products. In both of these aspects, X-ray imaging methods such as radiography and computed tomography provide a non-destructive solution. However, since the conventional attenuation-based modality suers from poor contrast in soft matter materials, modalities...... produces a contrast based on dierences in microstructure. In order to increase the use of X-ray imaging within food science, possible applications of X-ray phase-contrast and X-ray dark-eld imaging should be studied. To reach these applications, improvements are needed on several aspects of the imaging...... applications of novel X-ray imaging modalities within food science. The first two studies mainly concern the image acquisition process of taking the image. Using dark-eld radiography, raw, frozen and defrosted fruit were distinguished, and structural changes in barley seeds during germination were monitored...

    8. Bianchi Type-II inflationary models with constant deceleration parameter in general relativity

      Indian Academy of Sciences (India)

      C P Singh; S Kumar

      2007-05-01

      Einstein's field equations are considered for a locally rotationally symmetric Bianchi Type-II space–time in the presence of a massless scalar field with a scalar potential. Exact solutions of scale factors and other physical parameters are obtained by using a special law of variation for Hubble's parameter that yields a constant value of deceleration parameter. To get inflationary solutions, a flat region is considered in which the scalar potential is constant. Power-law and exponential cases are studied and in both solutions there is an anisotropic expansion of the cosmic fluid, but the fluid has vanishing vorticity. A detailed study of geometrical and kinematical properties of solutions has been carried out.

    9. Ileal digestibility of sunfl ower meal, pea, rapeseed cake, and lupine in pigs

      DEFF Research Database (Denmark)

      Nørgaard, Jan Værum; Fernández, José Adalberto; Jørgensen, Henry

      2012-01-01

      The standardized ileal digestibility (SID) of CP and AA was evaluated in soybean (Glycine max) meal, sunfl ower (Helianthus annuus) meal, rapeseed cake, and fi eld pea (Pisum sativum) using 10 pigs and in lupine (Lupinus angustifolius) using 7 pigs. Pigs were fi tted with either a T-cannula or a ......The standardized ileal digestibility (SID) of CP and AA was evaluated in soybean (Glycine max) meal, sunfl ower (Helianthus annuus) meal, rapeseed cake, and fi eld pea (Pisum sativum) using 10 pigs and in lupine (Lupinus angustifolius) using 7 pigs. Pigs were fi tted with either a T.......05) for soybean meal and pea compared to sunfl ower meal, rapeseed cake, and lupine. The SID of Lys and His were lowest (P ... meal, rapeseed cake, and especially lupine, although all tested feedstuffs seem appropriate for inclusion in diets for organic pigs....

    10. Fast and accurate conversion of atomic models into electron density maps

      Directory of Open Access Journals (Sweden)

      Carlos O.S. Sorzano

      2015-03-01

      Full Text Available New image processing methodologies and algorithms have greatly contributed to the signi cant progress in three-dimensional electron microscopy (3DEM of biological complexes we have seen over the last decades. Naturally, the availability of accurate procedures for the objective testing of new algorithms is a crucial requirement for the further advancement of the eld. A good and accepted testing work ow involves the generation of realistic 3DEM-like maps of biological macromolecules from which some measure of ground truth can be derived, ideally because their 3D atomic structure is already known. In this work we propose a very accurate generation of maps using atomic form factors for electron scattering. We thoroughly review current approaches in the eld, quantitatively demonstrating the bene ts of the new methodology. Additionally, we study a concrete example of the use of this approach for hypothesis testing in 3D Electron Microscopy.

    11. Probing magnetochirality

      Indian Academy of Sciences (India)

      Rupamanjari Ghosh

      2002-08-01

      Magnetochiral anisotropy refers to the phenomenon that when light is passed through a chiral medium placed in an external magnetic field, the refractive index, or equivalently, the absorption encountered by the light differs depending on whether it travels parallel or antiparallel to the magnetic field. It is a very small effect, the change in refractive index because of this effect alone being of the order of 10-11. This effect has recently been measured in an active ring laser interferometer in which the detection scheme convincingly eliminates the contributions from natural optical activity, the Faraday effect and other stray anisotropies in the system. The phenomenon is important in the context of fundamental interactions between light and matter and the governing symmetry principles, and also in biochemistry as one possible explanation for the homochirality of life.

    12. Finite Deformation of Magnetoelastic Film

      Energy Technology Data Exchange (ETDEWEB)

      Barham, Matthew Ian [Univ. of California, Berkeley, CA (United States)

      2011-05-31

      A nonlinear two-dimensional theory is developed for thin magnetoelastic lms capable of large deformations. This is derived directly from three-dimensional theory. Signi cant simpli cations emerge in the descent from three dimensions to two, permitting the self eld generated by the body to be computed a posteriori. The model is specialized to isotropic elastomers with two material models. First weak magnetization is investigated leading to a free energy where magnetization and deformation are un-coupled. The second closely couples the magnetization and deformation. Numerical solutions are obtained to equilibrium boundary-value problems in which the membrane is subjected to lateral pressure and an applied magnetic eld. An instability is inferred and investigated for the weak magnetization material model.

    13. 老年类风湿关节炎的临床特点

      Institute of Scientific and Technical Information of China (English)

      陈海娟; 杨春梅

      2009-01-01

      类风湿关节炎(Rheumatoid arthritis,RA)是一种以关节滑膜组织慢性炎症性病变为主要表现的自身免疫性疾病,以女性多见,可发生在任何年龄,发病高峰年龄为30~50岁。RA初发症状出现在60岁以后称为老年类风湿关节炎(eldly rheumatoid arthritis,ERA)。为探讨ERA的临床特点,收集我院ERA患者33例,与同期非老年类风湿关节炎(non—eldly rheumatoid arthritis,NERA)患者80例的临床资料进行对照分析。

    14. Final Technical Report for DOE DE-FG02-05ER54831 "Laboratory Studies of Dynamos."

      Energy Technology Data Exchange (ETDEWEB)

      Forest, Cary B. [UW-Madison

      2014-11-06

      Laboratory Studies of Dynamos: Executive Summary. The self-generation of magnetic fields by astrophysical bodies like planets, stars, accretion disks, galaxies, and even galaxy clusters arises due to a mechanism referred to as a homogeneous dynamo. It is quite simple to demonstrate the generation of a magnetic fi eld from a rotating copper disk coupled with a coil of wire, a device known as the homopolar dynamo. The device works like a magnetic fi eld ampli er with a feedback circuit: the differential rotation of a metal disk past an infinitesimally small seed magnetic field induces currents in the disk which, when coupled to a coil winding, can amplify the field until it becomes strong enough to slow the rotation of the disk. What is remarkable is that the same type of circuit may be achieved in a flowing conducting fluid such as a liquid metal in the case of planetary dynamos or a plasma in the case of astrophysical dynamos. The complexity of describing planetary and stellar dynamos despite their ubiquity and the plethora of observational data from the Earth and the Sun motivates the demonstration of a laboratory homogenous dynamo. To create a homogenous dynamo, one first needs a su fficiently large, fast flow of a highly conducting fluid that the velocity shear in the fluid can bend magnetic field lines. With a high Rm-flow, the magnetic fi eld can be ampli ed by the stretching action provided by di fferential rotation. The other critical ingredient is a flow geometry that provides feedback so that the ampli ed eld reinforces the initial in nitesimal seed field - a mechanism that recreates the feedback provided by the coil of wire in the homopolar dynamo. In the Madison Dynamo Experiment, this combination of magnetic ampli cation and feedback is feasible in the simple geometry of two counter-rotating helical vortices in a 1 meter-diameter spherical vessel lled with liquid sodium. For an optimal helical pitch of the flow the threshold for exciting a dynamo is

    15. Exact travelling solutions for some nonlinear physical models by (′/)-expansion method

      Indian Academy of Sciences (India)

      B Salim Bahrami; H Abdollahzadeh; I M Berijani; D D Ganji; M Abdollahzadeh

      2011-08-01

      In this paper, we establish exact solutions for some special nonlinear partial differential equations. The (′/)-expansion method is used to construct travelling wave solutions of the twodimensional sine-Gordon equation, Dodd–Bullough–Mikhailov and Schrödinger–KdV equations, which appear in many fields such as, solid-state physics, nonlinear optics, fluid dynamics, fluid flow, quantum field theory, electromagnetic waves and so on. In this method we take the advantage of general solutions of second-order linear ordinary differential equation (LODE) to solve many nonlinear evolution equations effectively. The (′/)-expansion method is direct, concise and elementary and can be used with a wider applicability for handling many nonlinear wave equations.

    16. Optimisation-Based Solution Methods for Set Partitioning Models

      DEFF Research Database (Denmark)

      Rasmussen, Matias Sevel

      _cient with respect to solution quality and solution time. Enhancement of the overall solution quality as well as the solution time can be of vital importance to many organisations. The _elds of operations research and mathematical optimisation deal with mathematical modelling of di_cult scheduling problems (among...... other topics). The _elds also deal with the development of sophisticated solution methods for these mathematical models. This thesis describes the set partitioning model which has been widely used for modelling crew scheduling problems. Integer properties for the set partitioning model are shown......, and exact and optimisation-based heuristic solution methods for the model are described. All these methods are centered around the wellknown column generation technique. Di_erent practical applications of crew scheduling are presented, and some of these applications are considered in detail in four included...

    17. Green's Dyadic, Spectral Function, Local Density of States, and Fluctuation Dissipation Theorem

      CERN Document Server

      Chew, W C; Dai, Q I

      2015-01-01

      The spectral functions are studied in conjunction with the dyadic Green's functions for various media. The dyadic Green's functions are found using the eigenfunction expansion method for homogeneous, inhomogeneous, periodic, lossless, lossy, and anisotropic media, guided by the Bloch- Floquet theorem. For the lossless media cases, the spectral functions can be directly related to the photon local density of states, and hence, to the electromagnetic energy density. For the lossy case, the spectral function can be related to the ?eld correlation function. Because of these properties, one can derive properties for ?eld correlations and the Langevin-source correlations without resorting to the uctuation dissipation theorem. The results are corroborated by the uctuation dissipation theorem. An expression for the local density of states for lossy, inhomogeneous, and dispersive media has also been suggested.

    18. Measurement of peak fluence of neutron beams using Bi-fission detectors

      Indian Academy of Sciences (India)

      R K Jain; Ashok Kumar; N L Singh; L Tommasino; B K Singh

      2012-03-01

      Fission fragments and other charged particles leave tracks of permanent damage in most of the insulating solids. Damage track detectors are useful for personal dosimeters and for flux/dose determination of high-energy particles from accelerators or cosmic rays. A detector that has its principal response at nucleon energy above 50 MeV is provided by the fission of Bi-209. Neutrons produce the largest percentage of hadron dose in most high-energy radiation fields. In these fields, the neutron spectrum is typically formed by low-energy neutrons (evaporation spectrum) and high-energy neutrons (knock-on spectrum). We used Bi-fission detectors to measure neutron peak fluence and compared the result with the calculated value of neutron peak fluence. For the exposure to 100 MeV we have used the iThemba Facility in South Africa.

    19. Service Oriented Robotic Architecture for Space Robotics: Design, Testing, and Lessons Learned

      Science.gov (United States)

      Fluckiger, Lorenzo Jean Marc E; Utz, Hans Heinrich

      2013-01-01

      This paper presents the lessons learned from six years of experiments with planetary rover prototypes running the Service Oriented Robotic Architecture (SORA) developed by the Intelligent Robotics Group (IRG) at the NASA Ames Research Center. SORA relies on proven software engineering methods and technologies applied to space robotics. Based on a Service Oriented Architecture and robust middleware, SORA encompasses on-board robot control and a full suite of software tools necessary for remotely operated exploration missions. SORA has been eld tested in numerous scenarios of robotic lunar and planetary exploration. The experiments conducted by IRG with SORA exercise a large set of the constraints encountered in space applications: remote robotic assets, ight relevant science instruments, distributed operations, high network latencies and unreliable or intermittent communication links. In this paper, we present the results of these eld tests in regard to the developed architecture, and discuss its bene ts and limitations.

    20. Flux line lattice symmetries in the borocarbide superconductor LuNi2B2C

      Indian Academy of Sciences (India)

      M R Eskildsen; A B Abrahamsen; P L Gammel; D J Bishop; N H Andersen; K Mortensen; P C Canfield

      2002-05-01

      We compare the results of small angle neutron scattering on the flux line lattice (FLL) obtained in the borocarbide superconductor LuNi2B2C with the applied field along the - and -axes. For $\\mathbf{H}||\\mathbf{c}$ the temperature dependence of the FLL structural phase transition from square to hexagonal symmetry was investigated. Above 10 K the transition onset field, 2(), rises sharply, bending away from c2() in contradiction to theoretical predictions of the two merging. For $\\mathbf{H}||\\mathbf{a}$ a first order FLL reorientation transition is observed at tr =3-3.5 kOe. Below tr the FLL nearest neighbor direction is parallel to the -axis, and above tr to the -axis. This transition cannot be explained using nonlocal corrections to the London model.

    1. TARLA İÇİ SULAMA KANALLARININ KAPLANMASINDA BAZI TOPRAK STABİLİZAN MADDELERİN KULLANILMA OLANAKLARI ÜZERİNE BİR ARAŞTIRMA

      OpenAIRE

      Hakgören, Feridun

      2010-01-01

      ÖZETSon yıllarda dünyada ve ülkemizde toprakların kimyasal ve mekanik stablizasyonu ile elde edilen karışımların yeni bir yapı malzemesi olarak kullanılması çalışmalarına oldukçaönem verilmektedir. Bu araştırma topraklara katılan bazı stabilizan madlerinin toprakların fiziksel, kimyasal ve su geçirme özelliklerine etkisi ile bu maddelerden elde edilen karışımların sızma kayıplarım azaltmak için tarla içi sulama kanallarmıda ekonomik ...

    2. Effect of surface stress and irregularity of the interface on the propagation of SH-waves in the magneto-elastic crustal layer based on a solid semi space

      Indian Academy of Sciences (India)

      D P Acharya; Indrajit Roy

      2009-04-01

      The object of the present paper is to investigate plane SH waves through a magneto-elastic crustal layer based over an elastic, solid semi space under the influence of surface stress on the free surface of the crustal layer and irregularity of the interface. Two types of irregularities of the interface namely, rectangular and parabolic have been considered. Modulations of wave velocity due to the presence of surface stress, irregularity and the magnetic field have been studied separately. Their combined effect has also been investigated. Graphs are drawn to highlight some important peculiarities. It is observed that surface stress, irregularity and magnetic field have their respective role to play in the propagation of SH waves in the crustal layer. Further modulation of wave velocity occurs due to their combined effect.

    3. Methods of Solving Ill-Posed Problems

      CERN Document Server

      Srinivasamurthy, Suresh B

      2012-01-01

      Many physical problems can be formulated as operator equations of the form Au = f. If these operator equations are ill-posed, we then resort to finding the approximate solutions numerically. Ill-posed problems can be found in the ?elds of mathematical analysis, mathematical physics, geophysics, medicine, tomography, technology and ecology. The theory of ill-posed problems was developed in the 1960's by several mathematicians, mostly Soviet and American. In this report we review the methods of solving ill-posed problems and recent developments in this ?eld. We review the variational regularization method, the method of quasi-solution, iterative regularization method and the dynamical systems method. We focus mainly on the dynamical systems method as it is found that the dynamical systems method is more effi?cient than the regularization procedure.

    4. Magnetism and superconductivity in ErNi2B2C

      Indian Academy of Sciences (India)

      N J Bancroft; D McK Paul; G McIntyre; C D Dewhurst; R Cubitt

      2002-05-01

      We have performed a series of neutron diffraction experiments from the magnetic order and the vortex lattice in single crystal ErNi2B2C. The incommensurate magnetic structure develops additional even harmonics below the `ferromagnetic' ordering temperature, F of 2.3 K. This feature and the existence of rods of diffuse scattering suggest the development of ferromagnetic microdomain walls. The magnetic structure is very sensitive to the application of a magnetic field with changes in modulation vector and harmonic content. Studies of the vortex lattice show the presence of a 45° reorientation transition and a distorted hexagonal to square transition as a function of applied field. Further distortions of the vortex lattice occur at N, but no changes are seen at F.

    5. Some new approaches to the study of the Earth's magnetic field reversals

      Directory of Open Access Journals (Sweden)

      G. Consolini

      2003-06-01

      Full Text Available Paleomagnetic studies clearly show that the polarity of the magnetic fi eld has been subject to reversals. It is generally assumed that polarity intervals are exponentially distributed. Here, the geomagnetic polarity reversal record, for the past 166 Ma, is analysed and a new approach to the study of the reversals is presented. In detail, the occurrence of 1/f-noise in the Power Spectral Density (PSD, relative to geomagnetic fi eld reversals, the existence of a Zipf's law behaviour for the cumulative distribution of polarity intervals, and the occurrence of punctuated equilibrium, as shown by a sort of Devil's staircase for the reversal time series, are investigated. Our results give a preliminary picture of the dynamical state of the geomagnetic dynamo suggesting that the geodynamo works in a marginally stable out-of-equilibrium confi guration, and that polarity reversals are equivalent to a sort of phase transition between two metastable states.

    6. Multiwave velocity analysis based on Gaussian beam prestack depth migration

      Institute of Scientific and Technical Information of China (English)

      Han Jian-Guang; Wang Yun; Han Ning; Xing Zhan-Tao; Lu Jun

      2014-01-01

      Prestack depth migration of multicomponent seismic data improves the imaging accuracy of subsurface complex geological structures. An accurate velocityfi eld is critical to accurate imaging. Gaussian beam migration was used to perform multicomponent migration velocity analysis of PP- and PS-waves. First, PP- and PS-wave Gaussian beam prestack depth migration algorithms that operate on common-offset gathers are presented to extract offset-domain common-image gathers of PP- and PS-waves. Second, based on the residual moveout equation, the migration velocity fields of P- and S-waves are updated. Depth matching is used to ensure that the depth of the target layers in the PP- and PS-wave migration profi les are consistent, and high-precision P- and S-wave velocities are obtained. Finally, synthetic andfi eld seismic data suggest that the method can be used effectively in multiwave migration velocity analysis.

    7. The increasing meaning of industrial communication. New chances and challenges for systems and components; Die zunehmende Bedeutung der industriellen Kommunikation. Neue Moeglichkeiten und Herausforderungen fuer Systeme und Komponenten

      Energy Technology Data Exchange (ETDEWEB)

      Kegel, Gunther [Pepperl+Fuchs GmbH, Mannheim (Germany)

      2009-07-01

      In process control, data are exchanged vertically from the fi eld level to the control system and horizontally within the process control levels as well as within neighboring phases of the life cycle. Open, scalable system architectures demand standardized communication structures that have adjusted to the increasing requirements to communication in automation of plants of process industry in the last decades. Technologically related systems and solutions of other application fi elds have influenced especially the communication within process control. In the near future, Ethernet applications and wireless communication of other domains are capable to be applied in process engineering. The paper deals with the history of recent communication standards and topologies and tries to give an outlook on the meaning of new technologies. Emphasis is placed on the physical layer, i.e. the communication structure. (orig.)

    8. Revisiting the equivalence of light-front and covariant QED in the light-cone gauge

      CERN Document Server

      Mantovani, Luca; Xiong, Xiaonu; Bacchetta, Alessandro

      2016-01-01

      We discuss the equivalence between light-front time-ordered-perturbation theory and covariant quantum ?eld theory in light-front quantization, in the case of quantum electrodynamics at one-loop level. In particular, we review the one-loop calculation of the vertex correction, fermion self-energy and vacuum polarization. We apply the procedure of integration by residue over the light-front energy in the loop to show how the perturbative expansion in covariant terms can be reduced to a sum of propagating and instantaneous diagrams of light-front time-ordered perturbation theory. The detailed proof of equivalence between the two formulations of the theory resolves the controversial question on which form should be used for the gauge-?eld propagator in the light-cone gauge in the covariant approach.

    9. Wild McEliece Incognito

      DEFF Research Database (Denmark)

      Bernstein, Daniel J.; Lange, Tanja; Peters, Christiane

      2011-01-01

      The wild McEliece cryptosystem uses wild Goppa codes over nite elds to achieve smaller public key sizes compared to the original McEliece cryptosystem at the same level of security against all attacks known. However, the cryptosystem drops one of the condence-inspiring shields built into the orig......The wild McEliece cryptosystem uses wild Goppa codes over nite elds to achieve smaller public key sizes compared to the original McEliece cryptosystem at the same level of security against all attacks known. However, the cryptosystem drops one of the condence-inspiring shields built...... into the original McEliece cryptosystem, namely a large pool of Goppa polynomials to choose from. This paper shows how to achieve almost all of the same reduction in key size while preserving this shield. Even if support splitting could be (1) generalized to handle an unknown support set and (2) sped up by a square...

    10. Prediction models for wind speed at turbine locations in a wind farm

      DEFF Research Database (Denmark)

      Knudsen, Torben; Bak, Thomas; Soltani, Mohsen

      2011-01-01

      manifested through the wind field is hence required. This paper develops models for this relationship. The result is based on two new contributions: the first is related to the estimation of effective wind speeds, which serves as a basis for the second contribution to wind speed prediction models. Based...... on standard turbine measurements such as rotor speed and power produced, an effective wind speed, which represents the wind field averaged over the rotor disc, is derived. The effective wind speed estimator is based on a continuous–discrete extended Kalman filter that takes advantage of nonlinear time varying...... turbulence models. The esti- mator includes a nonlinear time varying wind speed model, which compared with literature results in an adaptive filter. Given the estimated effective wind speed, it is possible to establish wind speed prediction models by system identification. As the prediction models are based...

    11. Magnetization study of mercurocuprate (Hg,Re)Sr2CuO4+

      Indian Academy of Sciences (India)

      S Balamurugan; I K Gopalakrishnan; J V Yakhmi; P Selvam

      2002-05-01

      The nominal (Hg1-Re)Sr2CuO4+ ( = 0.10 and 0.20) samples were synthesized at ∼ 920° C in partial vacuum. The compound with =0.10 exhibits superconductivity at ∼ 54 K while the composition = 0.20 is non-superconducting down to 5 K. On cooling below 10 K in an applied field of 4 kOe, the former causes a noticeable upturn in the field cooled (FC) magnetization signal. Such a change in magnetic response is also reflected in the magnetic hysteresis loop generated at 9 K. We attribute this effect to a paramagnetic contribution arising from Re in (Hg,Re)-1201 phase.

    12. Comparison of Simulated and Measured Non-linear Ultrasound Fields

      DEFF Research Database (Denmark)

      Du, Yigang; Jensen, Henrik; Jensen, Jørgen Arendt

      2011-01-01

      simulation program Field II, which will be used to generate the source for the AS simulation. The generated non-linear ultrasound eld is measured by a hydrophone in the focal plane. The second harmonic component from the measurement is compared with the AS simulation, which is used to calculate both...... fundamental and second harmonic elds. The focused piston transducer with a center frequency of 5 MHz is excited by a waveform generator emitting a 6-cycle sine wave. The hydrophone is mounted in the focal plane 118 mm from the transducer. The point spread functions at the focal depth from Field II...... and measurements are illustrated. The FWHM (full width at half maximum) values are 1.96 mm for the measurement and 1.84 mm for the Field II simulation. The fundamental and second harmonic components of the experimental results are plotted compared with the AS simulations. The RMS (root mean square) errors...

    13. A survey of temporal data mining

      Indian Academy of Sciences (India)

      Srivatsan Laxman; P S Sastry

      2006-04-01

      Data mining is concerned with analysing large volumes of (often unstructured) data to automatically discover interesting regularities or relationships which in turn lead to better understanding of the underlying processes. The field of temporal data mining is concerned with such analysis in the case of ordered data streams with temporal interdependencies. Over the last decade many interesting techniques of temporal data mining were proposed and shown to be useful in many applications. Since temporal data mining brings together techniques from different fields such as statistics, machine learning and databases, the literature is scattered among many different sources. In this article, we present an overview of techniques of temporal data mining. We mainly concentrate on algorithms for pattern discovery in sequential data streams. We also describe some recent results regarding statistical analysis of pattern discovery methods.

    14. Magnetic behavior of the oxide spinels: Li0.5Fe2.5-2AlCrO4

      Indian Academy of Sciences (India)

      U N Trivedi; K B Modi; H H Joshi

      2002-05-01

      In order to study the effect of substitution of Fe3+ by Al3+ and Cr3+ in Li0.5Fe2.5O4 on its structural and magnetic properties, the spinel system Li0.5AlCrFe2.5-2O4 ( = 0.0, 0.2, 0.4, 0.5, 0.6 and 0.8) has been characterized by X-ray diffraction, high field magnetization, low field ac susceptibility and 57Fe Mössbauer spectroscopy. Contrary to the earlier reports, about 50% of Al3+ is found to occupy the tetrahedral sites. The system exhibits canted spin structure and a central paramagnetic doublet was found superimposed on magnetic sextet in the Mössbauer spectra ( > 0.5).

    15. Multiscale Equatorial Electrojet Turbulence: Energy Conservation, Coupling, and Cascades in a Baseline 2-D Fluid Model

      CERN Document Server

      Hassan, Ehab; Morrison, P J; Horton, W

      2016-01-01

      Progress in understanding the coupling between plasma instabilities in the equatorial electrojet based on a unified fluid model is reported. A deeper understanding of the linear and nonlinear evolution and the coupling of the gradient-drift and Farley-Buneman instabilities is achieved by studying the e?ect of di?erent combinations of the density-gradient scale-lengths (Ln) and cross-?eld (E?B) drifts on the plasma turbulence. Mechanisms and channels of energy transfer are illucidated for these multiscale instabilities. Energy for the uni?ed model is examined, including the injected, conservative redistribution (between ?elds and scales), and ultimate dissipation. Various physical mechanisms involved in the energetics are categorized as sources, sinks, nonlinear transfer, and coupling to show that the system satisfies the fundamental law of energy Oonservation. The physics of the nonlinear transfer terms is studied to identify their roles in producing energy cascades { the transference of energy from the domin...

    16. What’s Cooking? – Cognitive Training of Executive Function in the Elderly

      OpenAIRE

      Wang, Man-Ying; Chang, Chien-Yu; Su, Shou-Yi

      2011-01-01

      Executive function involves the efficient and adaptive engagement of the control processes of updating, shifting, and inhibition (Miyake, 2000) to guide behavior toward a goal. It is associated with decrements in many other cognitive functions due to aging (West, 1996; Raz, 2000) with itself particularly vulnerable to the effect of aging (Treitz et al., 2007). Cognitive training in the form of structural experience with executive coordination demands exhibited effective enhancement in the eld...

    17. Przemiany seksualności w społeczeństwie współczesnym. Teoria i rzeczywistość

      OpenAIRE

      2014-01-01

      Publication Transformation of Sexuality in Contemporary Society. Theory and Reality has an interdisciplinary character. Human sexuality is presented in the perspective of the educational, social, psychological and medical assistance. Th e authors of the articles are specialists in various fi elds of science, many of them are known in Polish and foreign sexological literature. Th e book consists of four parts, dealing successively with important issues from a wide area of sexology. Th e ...

    18. Accounting for rotation in a multi-stage cyclo-symmetric model - a case study

      OpenAIRE

      Balmes, Etienne; Bucher, Izhak

      2010-01-01

      Rotating structures typically have stages with cyclo-symmetric geometries that are periodic by rotation. The spatial Fourier transform of fields at periodic positions leads to multiple uncoupled low cost problems for each Fourier harmonic. Real rotors are assemblies of stages that have different number of sectors. This motivated the extension of cyclo-symmetry to multistage assemblies. The resulting methodology gives access to low cost predictions of full rotor dynamics. The present paper summ...

    19. 在宅高齢者介護における介護者のアイデンティティ再構築について

      OpenAIRE

      福間, 里美; 針塚, 進

      2005-01-01

      The purpose of this study was to investigate identity-reconstruction of caregivers in family nursing for the elderly. Five kinds of questionnaires were given to 101 caregivers who had joined caregiver self-help groups. The results were summarized as follows: (1) There was a strong correlation found for the scores of identity-reconstruction of family caregivers and the scores ofrelationship-reconstruction between caregivers and their eld ers. (2) Inter-family relationships did not have any sig...

    20. Slug initiation and prediction using high accuracy methods - applications with field data

      OpenAIRE

      Kalogerakos, Stamatis

      2011-01-01

      The sponsoring company of the project is BP. The framework within which the research is placed is that of the Transient Multiphase Flow Programme (TMF-4), a consortium of companies that are interested in phenomena related to flow of liquids and gases, in particular with relevance to oil, water and air. The deliverables agreed for the project were: • validating EMAPS through simulations of known problems and experimental and field data concerning slug flow • introducing numer...

    1. Dalla pizza alla cura dell'uomo: le abilità di RoDyMan

      OpenAIRE

      Nunzia Bonifati; Bruno Siciliano

      2014-01-01

      RoDyMan, acronym for Robotic Dynamic Manipulation, is a research project funded by the European Research Council to the CREATE Consortium and carried out at PRISMA Lab in the Department of Electrical Engineering and Information Technology of the University of Naples Federico II. The goal is the development of a service robot able to manipulate elastic and soft objects, which change continuously density and shape. These robots will be used not only in manufacturing but also as an aid to eld...

    2. Analysis of Particulate Pollution on Foodstuff and Other Items by Environmental Scanning Electron Microscopy

      OpenAIRE

      Giordano, C; U. Bardi; D. GARBINI; Suman, M.

      2011-01-01

      Combustion processes commonly create fine and ultrafine particles whose effects are often harmful to human health. The present study is aimed at providing more data in this field by testing the capability of environmental electron scanning microscopy of detecting and analyzing such particles. For this purpose, we examined a range of samples taken from everyday food items collected in Tuscany. The results showed that, within the examined samples, inorganic particles can be observed in the nano...

    3. THE BASIC PRINCIPLES OF RESEARCH IN NEUROEDUCATION STUDIES

      OpenAIRE

      Ali Nouri

      2016-01-01

      The present paper assembles contributions from the areas of education, psychology, cognitive science, and of course, neuroeducation itself to introduce the basic principles of research in the field of neuroeducation studies. It is particularly important, as such it is a useful way to justify researchers about what neuroeducation as a specific domain do that no other field can do as well or cannot do at all. Based on the literature reviewed, neuroeducational research can be understood as an inte...

    4. A Concept of Dynamically Reconfigurable Real-Time Vision System for Autonomous Mobile Robotics.

      OpenAIRE

      De Cabrol, Aymeric; Garcia, Thibault; Bonnin, Patrick; Chetto, Maryline

      2007-01-01

      International audience; Abstract: In this article, we describe specific constraints of vision systems that are dedicated to be embedded in mobile robots. If PC based hardware architecture is convenient in this field because of its versatility, its flexibility, its performance and its cost, current real-time operating systems are not completely adapted to long processings with varying duration, and it is often necessary to oversize the system to guarantee fail-safe functioning. Also, interactions...

    5. Approche intégrée "Spectroscopies électroniques et Calculs ab-initio d' états de c oeur excit és" des modes d'adsorption de l'ammoniac et de diamines sur la surface Si(001)-2 x1.

      OpenAIRE

      Mathieu, Claire

      2009-01-01

      The fabrication of hybrid organic/inorganic semiconductor structures is the subject of a worldwide research e ffort due to possible applications in the fi eld of organic electronics. In particular, the (001) oriented silicon, reconstructed 2 x1, can be used as a template to graft ordered organic arrays via the reaction of molecular functionalities ( π bonds, amines etc.) with the surface silicon dangling bonds in ultra high vacuum (UHV) conditions. However, the most interesting molecular obje...

    6. Application of PSO, Artificial Bee Colony and Bacterial Foraging Optimization algorithms to economic load dispatch: An analysis

      CERN Document Server

      Baijal, Anant; Jayabarathi, T

      2011-01-01

      This paper illustrates successful implementation of three evolutionary algorithms, namely- Particle Swarm Optimization(PSO), Artificial Bee Colony (ABC) and Bacterial Foraging Optimization (BFO) algorithms to economic load dispatch problem (ELD). Power output of each generating unit and optimum fuel cost obtained using all three algorithms have been compared. The results obtained show that ABC and BFO algorithms converge to optimal fuel cost with reduced computational time when compared to PSO for the two example problems considered.

    7. Stability of extended scalar diquark stars vis-à-vis soliton stars

      Indian Academy of Sciences (India)

      R S Kaushal

      2003-03-01

      Motivated by relatively large values of the maximum mass $(M = 8:92M_{\\odot})$ and radius ( = 50.7 km) obtained for an extended scalar diquark star within the framework of an effective 4-theory (S K Karn et al [1]) some interesting observations are made with regard to the stability of stellar objects describable in general in terms of the polynomial field theories.

    8. An empirical approach to the theory of particle and nuclear phenomena: Review and some new ideas

      Indian Academy of Sciences (India)

      Raja Ramanna; Sudhir R Jain

      2001-08-01

      Experimental data on masses and lifetimes of unstable particles falls into a pattern, a brief review of some interesting consequences is presented here. From the experience in semiclassical methods and recent advances in quantum chromodynamics, it is proposed that an appropriate generalization of the Gutzwiller trace formula for field theories may lead to a systematic semiclassical chromodynamics theory. The theory can be developed to get appropriate dynamics leading to an explanation of pattern discovered in the empirical data.

    9. Working group report: Cosmology and astroparticle physics

      Indian Academy of Sciences (India)

      Raghavan Rangarajan; Ajit Srivastava; A Bandyopadhyay; A Basak; M Bastero-Gil; A Berera; J Bhatt; K Bhattacharya; S Chakraborty; M Das; S Das; K Dutta; D Ghosh; S Goswami; U Gupta; P Jain; Y-Y Keum; E Masso; D Majumdar; A P Mishra; S Mohanty; R Mohapatra; A Nautiyal; T Prokopec; S Rao; D P Roy; N Sahu; A Sarkar; P Saumia; A Sen; A Shivaji

      2011-05-01

      This is the report of the cosmology and astroparticle physics working group at WHEPPXI. We present the discussions carried out during the workshop on selected topics in the above fields. The problems discussed concerned axions, infrared divergences in inflationary theories, supersonic bubbles in a first-order electroweak phase transition, dark matter, MOND, interacting dark energy, composite Higgs models and statistical anisotropy of the Universe.

    10. Open problems in formation and decay of composite systems in heavy ion reactions

      Indian Academy of Sciences (India)

      G Viesti; V Rizzi; M Barbui; D Fabris; M Lunardon; G Nebbia; S Moretto; S Pesente; M Cinausero; E Fioretto; G Prete; D Shetty

      2001-08-01

      New highly exclusive experiments in the field of formation and decay of composite systems in heavy ion reactions are presented. Dynamical effects are reviewed in the light of recent works on the role of the / asymmetry between projectile and target. The possibility of extracting directly from the experimental data the emission barrier of alpha particles emitted from highly excited nuclei is discussed. Finally, the first experimental evidence of double giant resonance excitation in fusion-evaporation reaction is presented.

    11. Precision Agriculture without borders: Practical issues and improvements in farmland coverage with aerial vehicles.

      OpenAIRE

      Pereira Valente, Joao Ricardo; Barrientos Cruz, Antonio; Cerro Giner, Jaime del; Sanz Muñoz, David; Garzón Oviedo, Mario; Rossi, Claudio

      2011-01-01

      This work presents a solution for the aerial coverage of a field by using a fleet of aerial vehicles. The use of Unmanned Aerial Vehicles allows to obtain high resolution mosaics to be used in Precision Agriculture techniques. This report is focus on providing a solution for the full simultaneous coverage problem taking into account restrictions as the required spatial resolution and overlap while maintaining similar light conditions and safety operation of the drones. Results obtained from rea...

    12. High Momentum Resolution tracking In a Linear Collider

      CERN Document Server

      Ljunggren, M; Oskarsson, A

      2011-01-01

      The work in this thesis has been made within the LCTPC-collaboration, an international collaboration for studying the technical aspects af a possible tracking detector at a linear collider. The collaboration has built a prototype Time Projection Chamber (TPC) for testing the properties of dierent readout structures. A TPC is a tracking detector consisting of a gas lled drift volume placed in a solenoidal magnetic eld where the readout is made using a segmented plane of so called pads. When a char...

    13. Review of mycotoxin reduction in food and feed: from prevention in fields to detoxification by adsorption or transformation

      OpenAIRE

      Jard, Gwénaëlle; Liboz, Thierry; Mathieu, Florence; Guyonvarc’h, Alain; Lebrihi, Ahmed

      2011-01-01

      Abstract Mycotoxins are secondary metabolites present worldwide in agricultural commodities and produced by ?lamentous fungi that cause a toxic response (mycotoxicosis) when ingested by animals. Prevention of mycotoxicoses includes pre- and post-harvest strategies. The best way to reduce the mycotoxin content in food and feed is the prevention of mycotoxin formation in the ?eld but this is often not sufficient so that other methods are needed. To decontaminate and/or detoxify mycot...

    14. Supermarket refrigeration. Optimization of suction pressure in existing refrigerators; Supermarktkaelte. Saugdruck optimieren in Bestandskaelteanlagen

      Energy Technology Data Exchange (ETDEWEB)

      Berg, Philipp; Mueller, Markus [Eckelmann AG, Wiesbaden (Germany)

      2012-06-15

      The new E*LDS firmware E*COP{sup +} from Eckelmann AG (Wiesbaden, Federal Republic of Germany) for the optimization of the suction pressure supplies a demand-oriented adaptation of the suction pressure. The new feature is ideal for an update of existing systems with thermostatic expansion valves. Using this update operators of supermarket operators may save about 10% energy with little effort.

    15. Improving multidisciplinary communication at ward board rounds using video enhanced reflective practice

      OpenAIRE

      Hellier, Cyril; Tully, Vicki; Forrest, Sandra; Jaggard, Pamela; MacRae, Morag; Habicht, Dirk; Greene, Alexandra; Collins, Karen

      2015-01-01

      The priority to ensure patient safety and use resources effectively, demands attention and innovation. Video enhanced reflective practice (VERP) provides training based upon analysis of film clips of one's professional practice to develop practical insight into the processes of communication, so that effective changes can be made to ongoing behaviour and practice. In this case the focus was on multi-disciplinary communication within daily board rounds on an acute medicine and care of the elde...

    16. When is it Fuel Efficient for a Heavy Duty Vehicle to Catch Up With a Platoon?

      OpenAIRE

      Liang, Kuo-Yun; Mårtensson, Jonas; Johansson, Karl Henrik

      2013-01-01

      Vehicle platooning has in recent years become an important research eld for thevehicle industry. By establishing a platoon of heavy duty vehicles, the fuel consumption can bereduced for the follower vehicles due to the slipstream eect. However, as vehicles are scatteredon the road driving by themselves, coordination amongst the vehicles is required. In this paperwe study the problem of when it is benecial for a heavy duty vehicle to drive faster in orderto catch up and join a platoon. We deri...

    17. Application of PSO Artificial Bee Colony and Bacterial Foraging Optimization algorithms to economic load dispatch-An analysis

      Directory of Open Access Journals (Sweden)

      Anant Baijal

      2011-07-01

      Full Text Available This paper illustrates successful implementation of three evolutionary algorithms, namely- Particle Swarm Optimization (PSO, Artificial Bee Colony (ABC and Bacterial Foraging Optimization (BFO algorithms to economic load dispatch problem (ELD. Power output of each generating unit and optimum fuel cost obtained using all three algorithms have been compared. The results obtained show that ABC and BFO algorithms converge to optimal fuel cost with reduced computational time when compared to PSO for the two example problems considered.

    18. Application of PSO Artificial Bee Colony and Bacterial Foraging Optimization algorithms to economic load dispatch-An analysis

      OpenAIRE

      Anant Baijal; Vikram Singh Chauhan; T. Jayabarathi

      2011-01-01

      This paper illustrates successful implementation of three evolutionary algorithms, namely- Particle Swarm Optimization (PSO), Artificial Bee Colony (ABC) and Bacterial Foraging Optimization (BFO) algorithms to economic load dispatch problem (ELD). Power output of each generating unit and optimum fuel cost obtained using all three algorithms have been compared. The results obtained show that ABC and BFO algorithms converge to optimal fuel cost with reduced computational time when compared to P...

    19. Complexity in Statistical Relational Learning : A Study on Learning Bayesian Logic Programs

      OpenAIRE

      Hagerf, Alexander

      2015-01-01

      Most work that is done within machine learning today uses statistical methods which assume that the data is identically and independently distributed. However, the problem domains that we face in the real world are often much more complicated and present both complex relational/logical parts as well as parts with uncertainty. Statistical relational learning (SRL) is a sub-field of machine learning and A.I. that tries to solve these limitations by combining both relational and statistical learn...

    20. Choke-Mode Damped Structure Design for the CLIC Main Linac

      CERN Document Server

      Zha, Hao; Tang, Chuanxiang; Huang, Wenhui; Shi, Jiaru; Grudiev, Alexej; Wuensch, Walter

      2012-01-01

      Choke-mode damped structures are being studied as an alternative design for the accelerating structures of main linacs of the compact linear collider (CLIC). Choke-mode structures have the potential for much lower pulsed temperature rise, and lower cost of manufacture and fabrication. A new kind of choke-mode structure was proposed and simulated by Gdfidl. This structures has comparable wakefield damping effect as the baseline design of CLIC main linacs.

    1. A review of non-commutative gauge theories

      Indian Academy of Sciences (India)

      N G Deshpande

      2003-02-01

      Construction of quantum field theory based on operators that are functions of non-commutative space-time operators is reviewed. Examples of 4 theory and QED are then discussed. Problems of extending the theories to () gauge theories and arbitrary charges in QED are considered. Construction of standard model on non-commutative space is then briefly discussed. The phenomenological implications are then considered. Limits on non-commutativity from atomic physics as well as accelerator experiments are presented.

    2. Semantics for Spatio-temporal "Smart Queries"

      OpenAIRE

      Harbelot, Benjamin; Arenas, Helbert; Cruz, Christophe

      2013-01-01

      International audience There is a demand to enhance the meaning of objects and their relationships in the geospatial domain.This need has led to a new fi eld of research called geosemantics, which takes advantage of state of art databases and inference mechanism of ontologies. Current geosemantic proposals involve mixed solutions using spatial databases to store geographic objects and a separate ontology to provide semantic capabilities to the system. However making a simple query involves...

    3. Statistical patterns in the location of natural lightning

      OpenAIRE

      İnan, Umran Savaş; Zoghzoghy, F.G; Cohen,M.B; Said, R.K

      2013-01-01

      Lightning discharges are nature’s way of neutralizing the electrical buildup in thunderclouds. Thus, if an individual discharge destroys a substantial fraction of the cloud charge, the probability of a subsequent ?ash is reduced until the cloud charge separation rebuilds. The temporal pattern of lightning activity in a localized region may thus inherently be a proxy measure of the corresponding timescales for charge separation and electric ?eld buildup processes. We present a s...

    4. Experimental Methods in Psychology and Cognitive and Affective Neuroscience

      OpenAIRE

      Habekost, Thomas; Nielsen, Julie Hassing

      2014-01-01

      Laboratory experiments have always been important in psychology and are as commonly used today as ever due to the dominating position of cognitive research in international psychology. This trend has been further strengthened by recent developments in cognitive neuroscience, where experimental studies are central. Recently, experimental studies within the fi eld of affective neuroscience have also received attention. Notwithstanding, experimental methods remain controversial also in psychology...

    5. Kinematics of Signature Writing in Healthy Aging*

      OpenAIRE

      Caligiuri, Michael P.; Kim, Chi; Landy, Kelly M.

      2014-01-01

      Forensic document examiners (FDE) called upon to distinguish a genuine from a forged signature of an elderly person are often required to consider the question of age-related deterioration and whether the available exemplars reliably capture the natural effects of aging of the original writer. An understanding of the statistical relationship between advanced age and handwriting movements can reduce the uncertainty that may exist in an examiner’s approach to questioned signatures formed by eld...

    6. Current Issues in European Cultural Studies, ACSIS Conference 2011, Norrköping, 15–17 June : Abstracts

      OpenAIRE

      2011-01-01

      We proudly present the programme of our international conference ‘Current Issues in European Cultural Studies’! The conference is arranged by the Advanced Cultural Studies Institute of Sweden (ACSIS) which is a national centre for interdisciplinary and international networking in the !eld of cultural studies (www.acsis.liu.se). ACSIS has a wide range of activities, including the large biannual conference on cultural research that we have arranged since 2005. The great response to our !rst int...

    7. Effective Field Theories for Hot and Dense Matter

      Directory of Open Access Journals (Sweden)

      Blaschke D.

      2010-10-01

      Full Text Available The lecture is divided in two parts. The first one deals with an introduction to the physics of hot, dense many-particle systems in quantum field theory [1, 2]. The basics of the path integral approach to the partition function are explained for the example of chiral quark models. The QCD phase diagram is discussed in the meanfield approximation while QCD bound states in the medium are treated in the rainbow-ladder approximation (Gaussian fluctuations. Special emphasis is devoted to the discussion of the Mott effect, i.e. the transition of bound states to unbound, but resonant scattering states in the continnum under the influence of compression and heating of the system. Three examples are given: (1 the QCD model phase diagram with chiral symmetry ¨ restoration and color superconductivity [3], (2 the Schrodinger equation for heavy-quarkonia [4], and (2 Pions [5] as well as Kaons and D-mesons in the finite-temperature Bethe-Salpeter equation [6]. We discuss recent applications of this quantum field theoretical approach to hot and dense quark matter for a description of anomalous J/ψ supression in heavy-ion collisions [7] and for the structure and cooling of compact stars with quark matter interiors [8]. The second part provides a detailed introduction to the Polyakov-loop Nambu–Jona-Lasinio model [9] for thermodynamics and mesonic correlations [10] in the phase diagram of quark matter. Important relationships of low-energy QCD like the Gell-Mann–Oakes–Renner relation are generalized to finite temperatures. The effect of including the coupling to the Polyakov-loop potential on the phase diagram and mesonic correlations is discussed. An outlook is given to effects of nonlocality of the interactions [11] and of mesonic correlations in the medium [12] which go beyond the meanfield description.

    8. Caratterizzazione di membrane metalliche e ionomeriche per applicazioni energetiche

      OpenAIRE

      Catalano, Jacopo

      2009-01-01

      The work of this thesis has been focused on the characterization of metallic membranes for the hydrogen purification from steam reforming process and also of perfluorosulphonic acid ionomeric (PFSI) membranes suitable as electrolytes in fuel cell applications. The experimental study of metallic membranes was divided in three sections: synthesis of palladium and silver palladium coatings on porous ceramic support via electroless deposition (ELD), solubility and diffusivity analysis of hydr...

    9. Reframing social exclusion from science communication: Moving away from 'barriers' towards a more complex perspective

      OpenAIRE

      Dawson, E

      2014-01-01

      Science communication is an increasingly important field of activity,research and policy. It should not be assumed however, that science communication practices provide equitable and empowering opportunities for everyone. Social exclusion, inclusion and equity are key challenges for practitioners, researchers, policy makers and funders involved with science communication. In this com-mentary I reflect on the limitations of the ‘barriers approach to understandingsocial inclusion and exclusion fr...

    10. Fault detection in small diameter pipes using ultrasonic guided wave technology

      OpenAIRE

      Sabhnani, Rahul; Humphrey, V.F.; Zaghari, B.; Moshrefi-Torbati, M.

      2015-01-01

      Ultrasonic guided wave technology is one of the more recent developments in the ?eld of non-destructive evaluation. In contrast to conventional ultrasonic, this technology requires exposing only the areas where the transducers will be placed, hence requiring minimal insulation removal and excavation for buried pipes. This paper discusses how this technology can be used to detect defects in pipes under di?erent conditions. Here the experiments were performed on small diameter pipes (

    11. Avances en el estudio de la fi siología y patología endotelial en modelos animales

      OpenAIRE

      Fernando Iván Flores Pérez; Mario Pérez Martínez

      2006-01-01

      A review was carried out focused on the animal models that have been used to generate advances in the knowledge of the endothelium physiopathology fi eld. Basic aspects are explained in relation to history, types of animal models, variety of traditional animal models and transgenic or knockout animals; as well as related aspects of animal welfare and bioethics concerning the use of laboratory animals in biomedical research.

    12. Letter form de editor board: World rabbit science: towards an open access journal

      OpenAIRE

      Pascual Amorós, Juan José; Climent Navarro, Agueda Josefina

      2011-01-01

      Dear World Rabbit Science readers:World Rabbit Science's main aim has always been to provide universal access to scientifi cknowledge in the fi eld of cuniculture. From the outset, World Rabbit Science has engaged indifferent actions designed to achieve this goal.One example of this is the fact that since 2008, World Rabbit Science has published its contentsonline, allowing free access to all articles, reviews, conference abstracts... with the exception ofthe last two years, when they were on...

    13. From Journalism Studies to Journalism Theory

      Directory of Open Access Journals (Sweden)

      Elias Machado

      2005-06-01

      Full Text Available This paper comprises three parts –- 1 recognition of professional practice as a legitimate object of research; 2 development of methodologies that are adjusted to the particularities of the area; and 3 funding of multidisciplinary experiments on applied research. My intention here is to build on the mapping of existing studies to discuss some assumptions and to consolidate journalism as a fi eld of knowledge, based on the distinction between journalism studies and journalism theories.

    14. String effective actions, dualities, and generating solutions

      NARCIS (Netherlands)

      Chemissany, Wissam Ali

      2008-01-01

      This thesis covers in general two separate topics: the string e®ective actions and the geodesic motion of brane solutions. The main theme of the ¯rst topic, i.e., the string e®ective actions, is the construction of the abelian D-brane e®ective action. In the limit of constant ¯eld strengths this act

    15. Commensurability oscillations in NdBa2Cu3O single crystals

      Indian Academy of Sciences (India)

      H Küpfer; G Ravikumar; Th Wolf; A A Zhukov; H Wühl

      2002-05-01

      Commensurability between inter-vortex distance and crystal lattice constant is investigated by angular dependent magnetization in very pure twinned and twin-free NdBa2Cu3O single crystals. With increasing temperature the incommensurate states split up and become finally commensurate with half the vortex distance. These new commensurate states are related to a substructure of the intrinsic pinning potential within the unit cell and discussed with respect to temperature, field, anisotropy, and twin structure.

    16. From Automatic to Adaptive Data Acquisition:- towards scientific sensornets

      OpenAIRE

      Chang, Marcus

      2009-01-01

      Sensornets have been used for ecological monitoring the past decade, yetthe main driving force behind these deployments are still computer scien-tists. The denser sampling and added modalities oered by sensornets coulddrive these elds in new directions, but not until the domain scientists be-come familiar with sensornets and use them as any other instrument in theirtoolbox.We explore three dierent directions in which sensornets can become easierto deploy, collect data of higher quality, and o...

    17. Characterization of the vegetation of National Park Serra de Itabaiana, Sergipe-Brazil

      OpenAIRE

      Túlio Vinicius Paes Dantas; Adauto Souza Ribeiro

      2010-01-01

      This study aimed to map and characterize the vegetation of the National Park of Serra de Itabaiana, with emphasis on the most abundant plant species, evaluating strategies for their conservation. There was a predominance of open formations of grassy fi elds, characterized as high-altitude grassland (3,289ha), mainly in areas of slopes. The forests are characterized as ecotones between Lowland Dense Rain Forest and Semideciduous Forest (2,643ha), mostly as secondary forest. The habitat called ...

    18. Density of states in an electrically biased quantum well

      Indian Academy of Sciences (India)

      A Khan; S Sinha; P Panchadhyayee

      2007-10-01

      Density of states in a quantum well has been studied in the presence of an electric field applied perpendicular to the growth direction. We have shown that an extra quantization is introduced to the motion of the electron due to the discrete energy levels known as Wannier–Stark ladder states and the nature of density of electronic states changes from quasi two-dimensional to quasi one-dimensional.

    19. Elliptic Curve Cryptography in JavaScript

      OpenAIRE

      Haustenne, Laurie; De Neyer, Quentin; Pereira, Olivier; ECRYPT Workshop on Lightweight Crytpography

      2011-01-01

      We document our development of a library for elliptic curve cryptography in JavaScript. We discuss design choices and investigate optimizations at various levels, from integer multiplication and eld selection to various xed-based EC point multiplication techniques. Relying on a small volume of public precomputed data, our code provides a speed-up of a factor 50 compared to previous existing implementations. We conclude with a discussion of the impact of our work on a concrete application: the...

    20. Pre-Colonial political centralization and contemporary development in Uganda

      OpenAIRE

      Bandyopadhyay, Sanghamitra; Elliott D. Green

      2012-01-01

      The importance of pre-colonial history on contemporary African development has become an important .eld of study within development economics in recent years. In particular Gennaioli and Rainer (2007) suggest that pre-colonial political centralization has had an impact on con- temporary levels of development within Africa at the country level. We test the Gennaioli and Rainer (2007) hypothesis at the sub-national level with evidence from Uganda. Using a variety of datasets we obtain results w...

    1. Citizenship and Consumption: Mobilisation in Alternative Food Systems in France

      OpenAIRE

      Dubuisson-Quellier, Sophie; Lamine, Claire; Le Velly, Ronan

      2011-01-01

      Contemporary alternative food movement implement various means of action, which were previously developed by movements that were striving to construct citizenship through consumption. Drawing on the results of in-depth ethnographic studies, this article analyses the main fields of action of three French organisations: consumer edu¬cation, implementation of alternative forms of trade and consumer mobilisation in protest campaigns. It shows that these actions require the movement to build repres...

    2. Experimental status of physics

      Indian Academy of Sciences (India)

      H Yamamoto

      2000-07-01

      In a short period of time, we will have a large amount of results from -factories including ones on CP violation. In this talk, we briefly review the current experimental status of -physics. After a quick description of -facilities, we divide this vast field into two categories: (1) weak interaction and QCD, (2) unitarity triangle and CP violation. Only a few critical items are selected in each category for the sake of time and space.

    3. Local scour at abutments: A review

      Indian Academy of Sciences (India)

      Abdul Karim Barbhuiya; Subhasish Dey

      2004-10-01

      Failure of bridges due to local scour has motivated many investigators to explore the causes of scouring and to predict the maximum scour depth at abutments. In this paper, a detailed review of the up-to-date work on scour at abutments is presented including all possible aspects, such as flow field, scouring process, parameters affecting scour depth, time-variation of scour and scour depth estimation formulae.

    4. OPPORTUNITIES AND THREATS FOR DEVELOPMENT OF HUMAN CAPITAL IN THE FIELD OF EDUCATION IN RURAL AREAS IN POLAND UNDER THE MULTIANNUAL FINANCIAL FRAMEWORK 2014–2020

      OpenAIRE

      Iwona Kowalska

      2016-01-01

      Investment in human capital is a key determinant of socio-economic development in the twenty-fi rst century. These investments in rural areas require well-planned interventions in the fi eld of education. The necessary funds for this purpose will be available under the multiannual fi nancial framework EU 2014–2020. Interventions in this area in Poland are planned mainly under the Operational Programme Knowledge Education Development POWER) and the Regional Operational Programmes (RPO). ...

    5. A Note On Galilean Invariants In Semi-Relativistic Electromagnetism

      OpenAIRE

      Song, Yintao

      2013-01-01

      The incompatibility between the Lorentz invariance of classical electromagnetism and the Galilean invariance of continuum mechanics is one of the major barriers to prevent two theories from merging. In this note, a systematic approach of obtaining Galilean invariant ?eld variables and equations of electromagnetism within the semi-relativistic limit is reviewed and extended. In particular, the Galilean invariant forms of Poynting's theorem and the momentum identity, two most important electrom...

    6. NEW ACTORS IN THE LIVESTOCK SECTOR IN THE KILIMANJARO REGION

      OpenAIRE

      IKEGAMI, Koichi

      2011-01-01

      This paper analyzes the challenges and potential of the livestock sector in the Kilimanjaro region of Tanzania using fi eld research conducted in Maua village, which is situated on the southern slope of Mt. Kilimanjaro. The Maua people keep every livestock in a hutch, which should suggest to policy makers the magnitude of the problems they and other pastoralists face with the shift from a grazing to a form of feedlot system. Indeed, smallholder livestock farmers face major problems related to...

    7. Interactive Modelling of Shapes Using the Level-Set Method

      DEFF Research Database (Denmark)

      Bærentzen, Jakob Andreas; Christensen, Niels Jørgen

      2002-01-01

      that are very simple and intuitive from a user perspective. A nal virtue is that the {LSM} makes it easy to maintain a distance eld representation of the represented solid. This has a number of bene ts such as simpli cation of the rendering scheme and the curvature computation. A number of {LSM} speed functions...... tools have been incorporated in our sculpting system which also includes facilities for volumetric {CSG} and several techniques for visualization....

    8. Formalizing Arrow’s theorem

      Indian Academy of Sciences (India)

      Freek Wiedijk

      2009-02-01

      A small project in which I encoded a proof of Arrow’s theorem—probably the most famous results in the economics field of social choice theory—in the computer using the Mizar system is presented here. The details of this specific project, as well as the process of formalization (encoding proofs in the computer) in general are discussed.

    9. Some stochastic aspects of quantization

      Indian Academy of Sciences (India)

      Ichiro Ohba

      2002-08-01

      From the advent of quantum mechanics, various types of stochastic-dynamical approach to quantum mechanics have been tried. We discuss how to utilize Nelson’s stochastic quantum mechanics to analyze the tunneling phenomena, how to derive relativistic field equations via the Poisson process and how to describe a quantum dynamics of open systems by the use of quantum state diffusion, or the stochastic Schrödinger equation.

    10. Environmental compensation using Resource Equivalency Analysis (REA) and Habitat Equivalency Analysis (HEA): is it just for the birds?

      OpenAIRE

      Cole, Scott

      2010-01-01

      Environmental compensation is the provision of natural resources through a restoration project, which is scaled to ensure the public is compensated for the environmental damage. The European Union (EU) recently implemented the Environmental Liability Directive (ELD), requiring that environmental damage be remediated (restored) so that the affected environment returns to (or toward) its baseline condition and the public is compensated for the initial damage and the losses during the time it ta...

    11. THE PIXHAWK OPEN-SOURCE COMPUTER VISION FRAMEWORK FOR MAVS

      OpenAIRE

      L. Meier; Tanskanen, P.; Fraundorfer, F.; Pollefeys, M.

      2012-01-01

      Unmanned aerial vehicles (UAV) and micro air vehicles (MAV) are already intensively used in geodetic applications. State of the art autonomous systems are however geared towards the application area in safe and obstacle-free altitudes greater than 30 meters. Applications at lower altitudes still require a human pilot. A new application field will be the reconstruction of structures and buildings, including the facades and roofs, with semi-autonomous MAVs. Ongoing research in the MAV robotics fi...

    12. "¿Qué hacen aquí esos Pishtaku?": sueños, ofrendas y la construcción del pasado

      OpenAIRE

      Alexander Herrera; Kevin Lane

      2006-01-01

      This paper addresses the impactof local perceptions of the environment,archaeological sites and of archaeologiststhemselves, on the ways in which weconstruct the past. Based on the dissimilarfi eld experiences of two research teams weassess the power of dreams, offerings andrituals conducted to obtain permission fromthe mountains, the water and the ancestors toconduct excavations and surveys in the northcentralhighlands of Peru. These, we argue,manifest the complex articulation of geopolitica...

    13. The senile kidney

      Directory of Open Access Journals (Sweden)

      Denisova Т.Р.

      2015-03-01

      Full Text Available The given work summarizes external data and self-obtained results on development and diagnostic of kidney involution modifications. Article discusses definition of "senile kidney" as a clinical and pathomorphological term. Major statements on pathophysiological causes of age-associated renal disorders and their prognosis, specifics of chronic kidney disease in elderly and senile patients have been reviewed. Phenomenon of renal "multimorbidity" in eldely maximizes worsening risk of unmodifiable kidney function.

    14. Analysis of ultra-narrow ferromagnetic domain walls

      Energy Technology Data Exchange (ETDEWEB)

      Jenkins, Catherine; Paul, David

      2012-01-10

      New materials with high magnetic anisotropy will have domains separated by ultra-narrow ferromagnetic walls with widths on the order of a few unit cells, approaching the limit where the elastic continuum approximation often used in micromagnetic simulations is accurate. The limits of this approximation are explored, and the static and dynamic interactions with intrinsic crystalline defects and external driving elds are modeled. The results developed here will be important when considering the stability of ultra-high-density storage media.

    15. Consumer satisfaction with water, wastewater and waste services in Portugal

      OpenAIRE

      Hormann, Karoline

      2016-01-01

      While the concept of consumer satisfaction is a central topic in modern marketing theory and practice, citizens' satisfaction with public services, and especially water and waste services, is a eld that still remains empirically rather unexplored. The following study aims to contribute to this area by analysing the determinants of user satisfaction in the water, wastewater and waste sector in Portugal, using a unique survey of 1070 consumers undertaken by the Portuguese Wat...

    16. CRIMINAL POLICY AND PREVENTION OF DRUG ADDICTION AMONG YOUTH

      OpenAIRE

      Jadranka Ivandić Zimić; Sanja Mikulić

      2010-01-01

      Contribution of the criminal policy in the development of the integrated prevention-social policy related to drug addiction is highlyimportant because of the fact that it aims are reducing of the drug related crimes, protecting the victims and community. The paperconsiders interventions of the criminal policy into fi elds of treatment and prevention of drug addiction among youth. This relationrepresent challenge for policymakers because interconnections between different service, who do not a...

    17. Pollination and protection against herbivory of Nepalese Coelogyninae (Orchidaceae)

      OpenAIRE

      Subedi, A.; Chaudhary, R. P.; Achterberg, van, C.; Heijerman, T.; LENS, F.; Dooren, van, H.J.C.; Gravendeel, B.

      2011-01-01

      • Premise of the Study: Although many species in the orchid genus Coelogyne are horticulturally popular, hardly anything is known about their pollination. Pollinators of three species were observed in the fi eld in Nepal. This information is urgently needed because many orchid species in Nepal are endangered. Whether the exudates produced by extrafl oral nectaries played a role in protection against herbivory was also investigated. • Methods: Pollinators of C. fl accida , C. nitida , and Otoc...

    18. A concept of an electricity storage system with 50 MWh storage capacity

      OpenAIRE

      Józef Paska; Mariusz Kłos; Paweł Antos; Grzegorz Błajszczak

      2012-01-01

      Electricity storage devices can be divided into indirect storage technology devices (involving electricity conversion into another form of energy), and direct storage (in an electric or magnetic fi eld). Electricity storage technologies include: pumped-storage power plants, BES Battery Energy Storage, CAES Compressed Air Energy Storage, Supercapacitors, FES Flywheel Energy Storage, SMES Superconducting Magnetic Energy Storage, FC Fuel Cells reverse or operated in systems with electrolysers an...

    19. Responses on toad tadpoles to ammonium nitrate fertilizer and predatory stress: differences between populations on a local scale

      OpenAIRE

      Ortíz-Santaliestra, Manuel E.; Fernández-Benéitez, María José; Lizana, Miguel; Marco, Adolfo

      2011-01-01

      — Agriculture-related pollution is among the major causes of global amphibian population declines. The multiple stressors to which amphibians are exposed in the field, such as predation pressure, can make agrochemicals far more deadly than when they act in isolation. Even within a small area, diffuse agricultural pollution does not affect all aquatic environments equally, which could account for local differences in amphibian sensitivity to agrochemicals. We examined the combined effects of am...

    20. Thermal imaging for interactive surfaces

      OpenAIRE

      Abdelrahman, Yomna

      2013-01-01

      Thermal camera operating in Far Infrared (FIR) is considered to be un- derexplored in elds other than security and law enforcement. Nevertheless, recently it drawn the attention of Human Computer Interaction (HCI) re- searchers as a new sensory system enabling novel interactive systems. They are robust to illumination changes and using it with well-known computer vi- sion techniques, the complexity of the interaction detection is highly reduced as compared to RGB and depth cameras. FIR radiat...