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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. 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.

  8. 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.

  9. 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.

  10. 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.

  11. 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.

  12. 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.

  13. 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.

  14. 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.

  15. 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.

  16. 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.

  17. 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.

  18. 海南坡鹿的起源、进化及保护%The origin and phylogenetics of Hainan Eld's deer and implications for Eld's deer conservation

    Institute of Scientific and Technical Information of China (English)

    张琼; 曾治高; 孙丽风; 宋延龄

    2009-01-01

    Eld's deer (Cervus eldi) , a highly endangered cervid, includes three subspecies (C. e. eldi, C. e. siamensis and C. e, thamin) that distribute in Southeast Asia and one separated population of C. e. siamensii occurs in Hainan Island of China named Hainan Eld's deer. The endangered subspecies C. e. siamensis has been extinct in wild in Thailand over several dec-ades. Recently, a conservation program has been launched in Thailand to establish wild population of C. e. siamensis from cap-tive breeding deer in the zoo. Hainan Eld' s deer has been considered as supplement resource for the reestablish deer population. In this study, we analyzed variation in the mitochondria! DNA (mtDNA) D-loop sequences of 35 Eld's deer samples, including two Eld's deer subspecies (C e. siamensis and C. e. thamin) and Hainan Eld's deer to address the following questions: (1) where did the Hainan Eld's deer originate from; (2) the relationship between Hainan Eld's deer and subspecies C. e. siamen-sis , and (3) the genetic diversity of Hainan Eld' s deer population. Four haplotypes were observed in all samples, all the sam-ples of Hainan Eld's deer shared an identical haplotype. We constructed phylogenetic trees by Maximum likelihood (ML) , max-imum parsimony ( MP) , Neighbour-Joining ( NJ ) and Bayesian method using the results of this study with sequences data provid-ed by GenBank together. The Hainan Eld's deer and C. e. siamensis were clustered together by MP and NJ method, however, some genetic differentiation was detected between the Hainan Eld' s deer and C. e. siamensii. The average genetic distance is 0.026 between the Hainan Eld's deer and 6". e. siamensii. Our results suggest that Eld's deer could distribute via land bridge from the South-easten Asian mainland to the Hainan Island during the Pleistocene (0. 69 Mya) when the sea level of Beibu Gulf seacoast went down in glacier age. Our results indicate a long-term historical isolation of Hainan Eld's deer population from its

  19. 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

  20. 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.

  1. 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.

  2. 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.

  3. 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.

  4. 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.

  5. 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.

  6. 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.

  7. 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.

  8. 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.

  9. 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.

  10. 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.

  11. 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.

  12. 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.

  13. 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.

  14. 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.

  15. 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.

  16. 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.

  17. 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.

  18. 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.

  19. 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

    quality of the aquatic environment and the provision of food from highly efficient agriculture in line with the EU’s Wa-ter Framework Directive and Nitrates Directive, field-scale knowledge is essential for introducing water management ac-tions on-field or off-field and producing an optimal differen-tiated N...... precipitation, high concen-tration of nitrate-N, and short-term low intensity drainage at air temperatures often below 5 ◦C; (ii) medium net precip-itation, medium concentration of nitrate-N, and short-term medium-intensity drainage at air temperatures often above 5 ◦C; and (iii) high net precipitation, low...... concentration of nitrate-N and long-term high intensity drainage at air tem-peratures above 5 ◦C. For each type, on-field water manage-ment actions, such as the selection of crop types and in-troduction of catch crops, appeared relevant, whereas off-field actions only seemed relevant for the latter two field types...

  20. 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.

  1. 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.

  2. 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.

  3. 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.

  4. 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.

  5. 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.

  6. 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.

  7. 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.

  8. 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.

  9. 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.

  10. 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.

  11. 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.

  12. 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.

  13. 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.

  14. 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.

  15. 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.

  16. Süzme Yogurt Üretiminde Elde Edilen Serumun Bazı Özellikleri

    Directory of Open Access Journals (Sweden)

    Seval Sevgi KIRDAR

    2009-04-01

    Full Text Available Süzme yogurt üretimi sırasında elde edilen yan ürün serumdur. Arastırmada, farklı zaman periyotlarında (Kıs ve Yaz Ayları farklı mandıralarda üretilen süzme yogurtlarına ait serum örneklerinin bazı özellikleri incelenmistir. Kıs aylarında, serum örneklerinin toplam kurumadde içeriklerinin % 5.33–6.15, yag oranının % 0.01–0.09 , protein içeriginin % 0.17–0.44 , laktoz % 4.41–4.89 , mineral madde miktarının % 0.63–1.03 , titrasyon asitliginin ( %L.A. % 0.74–0.99 ve pH' nın 3.57–3.78 arasında degistigi saptanmıstır.Yaz aylarında, serum örneklerinin toplam kurumadde içeriklerinin % 4.78–6.15, yag oranının % 0.01 – 0.08 , protein içeriginin % 0.18 – 0.25 , laktoz % 4.17–5.38 , mineral madde miktarının % 0.32–0.51 , titrasyon asitliginin ( %L.A. % 0.77– 1.14 ve pH'nın 3.56–3.72 arasında degistigi belirlenmistir.

  17. Eff ect of microwave fi eld on trypsin inhibitors activity and protein quality of broad bean seeds (Vicia faba var. major)

    OpenAIRE

    Mirosław Pysz; Szymon Polaszczyk; Teresa Leszczyńska; Ewa Piątkowska

    2012-01-01

    Background. In human nutrition legume seeds are usually subjected to soaking and thermal processes, mainly by using traditional cooking method. This method which has been used for decades, does not allow to control and adjust the parameters of this process. Therefore it does not seem to be the optimal method. Undoubtedly, microwave fi eld is an alternative thermal process to conventional technique. The aim of this study was to assess the impact of microwave fi eld on the activity of trypsin i...

  18. 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.

  19. 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.

  20. Görüntü İşleme Tekniği ile Beton Basınç Dayanımının Tahmin Edilmesi

    Directory of Open Access Journals (Sweden)

    Celalettin BAŞYİĞİT

    2014-07-01

    Full Text Available Bu çalışmanın amacı, beton sınıflarının görüntü işleme tekniği kullanılarak tahmin edilmesidir. Bu amaçla 0,69, 0,54 ve 0,42 olmak üzere 3 farklı S/Ç oranı kullanılarak farklı dayanım sınıfında betonlar üretildi. Elde edilen numuneler üzerinde, özgül ağırlık, su emme ve boşluk oranı, ultrases geçiş hızı, basınç dayanımı deneyleri gerçekleştirildi. Ayrıca görüntü işleme teknikleri kullanılarak çözümlemeler yapıldı. Görüntü işleme yöntemi kullanarak elde edilen sonuçlar ile üretilen betonların basınç dayanımları arasındaki ilişkiler irdelendi. Sonuç olarak kullanılan görüntü işleme tekniği ile beton içerisindeki agrega ve çimento matrisi yüzdelerinin elde edilebildiği ve bu değerler kullanılarak beton basınç dayanımlarının R²=0,9845 düzeyinde yüksek bir ilişkililik ile tahmin edilebildiği sonucuna varıldı. Bu çalışma, betonların görüntü işleme tekniği kullanılarak basınç dayanımlarının tahmin edilmesinde yardımcı olacaktır.

  1. 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.

  2. 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。

  3. 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.

  4. Eff ect of microwave fi eld on trypsin inhibitors activity and protein quality of broad bean seeds (Vicia faba var. major

    Directory of Open Access Journals (Sweden)

    Mirosław Pysz

    2012-06-01

    Full Text Available Background. In human nutrition legume seeds are usually subjected to soaking and thermal processes, mainly by using traditional cooking method. This method which has been used for decades, does not allow to control and adjust the parameters of this process. Therefore it does not seem to be the optimal method. Undoubtedly, microwave fi eld is an alternative thermal process to conventional technique. The aim of this study was to assess the impact of microwave fi eld on the activity of trypsin inhibitors and protein quality of three varieties of broad bean seeds. Material and methods. The study was performed on dry seeds of broad bean varieties Windsor White, Bachus and Basta. The seeds were soaked and heated in a microwave. The seeds absorbed different energy doses from 500 J/g, through 750, 1000, 1250, 1500, 1750 to 2000 J/g. The study material prepared in this way was tested for trypsin inhibitor activity, protein solubility and in vitro protein digestibility. The results were analysed by the one-way analysis of variance. Results. Microwave heating resulted in decreased activity of trypsin inhibitors and protein solubility and increased digestibility of protein in all tested varieties of broad bean seeds. With increasing doses of the microwave fi eld energy a decrease in protein solubility was observed. Satisfactory reduction in trypsin inhibitors at the level of 70-75% and highest protein digestibility were obtained by using a microwave fi eld with energy dose of 1000 J/g of seeds. Conclusion. It can be concluded that the optimal dose of microwave energy fi eld which will produce a relatively low activity of trypsin inhibitors and the highest protein digestibility together with maintaining solubility of broad been seeds was 1000 J/g seed.

  5. 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.

  6. 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.

  7. 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.

  8. 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.

  9. 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.

  10. 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.

  11. 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.

  12. 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.

  13. 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.

  14. 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.

  15. Tarımsal atıklardan elde edilen sürdürülebilir tekstil lifleri: Ananas yaprağı lifleri

    Directory of Open Access Journals (Sweden)

    Ece Kalaycı

    2016-08-01

    Full Text Available Ananas yaprağı lifleri, adından da anlaşılacağı gibi ananas bitkisinin yapraklarından elde edilen doğal bir lif türüdür. Ananas bitkisi genellikle meyvesi için yetiştirildiğinden, her yıl tonlarca ananas yaprağı tarımsal atık olarak ortaya çıkmaktadır. Yapılarındaki selüloz oranı oldukça yüksek olan bu lifler, üstün mekanik özellikleri ve suyu seven yapısı ile iyi bir tekstil malzemesi olarak kabul edilmektedir. Ayrıca, kolay ulaşılabilir, biyobozunur ve geri dönüştürülebilir olması sayesinde özellikle biyo-kompozitlerin üretiminde tercih edilen bir malzeme haline gelmiştir. Hem tarımsal atıkların değerlendirilmesi hem de çevre dostu özellikleri ile sürdürülebilir üretimin hedeflendiği şu günlerde, ananas yaprağı lifi önemli bir hammadde kaynağıdır. Bu derleme çalışmasında, ananas yaprağı liflerinin yapısı, özellikleri, elde ediliş yöntemleri ve kullanım alanları gibi başlıklar detaylı olarak incelenmiştir.

  16. Cycling in Turkey: Reasons and benefits of cyclingTürkiye’de bisiklet kullanımı: Bisiklet kullanma nedenleri ve elde edilen faydalar

    Directory of Open Access Journals (Sweden)

    Funda Koçak

    2016-12-01

    Full Text Available The purpose of this research is to reveal of cyclist, reasons and benefits of using bicycle. In this regard, 110 female (Mage= 30.46, SD= 8.78 and 496 male (Myaş= 30.47; SD= 10.12, who were totally 606 cyclist selected by using convenience sampling sampling method, participated in the research voluntarily. In order to determine the reasons and benefits of cycling, personal information form and a three-section-questionnaire, which was prepared by the researcher were used in the research. In the data analysis, frequency, percentage, mean, standard deviation, X2-Chi Square and Cronbach's Alpha internal consistency coefficient tests were used. Participants have stated the reasons as traveling, having interest in cycling, and staying healthy, and they have stated the benefits as feeling healthier, stronger, happier, and overcoming daily stress. As a result, the higher the income and education level get, the less people participate cycling. Also, it has been observed that single people have more positive attitude towards cycling compared to married people. In addition to this, gender, working status and duration have no effect on individuals' participate cycling.   Özet Bu araştırmanın amacı; Türkiye’deki bisiklet kullanıcılarının bisiklet kullanma nedenlerini ve bisiklet kullanımının sağladığı faydaları ortaya koyabilmektir. Bu amaçla kolayda örnekleme yöntemi kullanılarak seçilen 110 kadın (Myaş= 30.46, SD= 8.78 ve 496 erkek (Myaş= 30.47; SD= 10.12 olmak üzere 606 bisiklet kullanıcısı araştırmaya gönüllü olarak katılmıştır. Araştırmada kişisel bilgi formu, katılımcıları bisiklet kullanma nedenleri ve katılımcıların bisiklet kullanımı sonucunda elde ettikleri faydaları ortaya koymak amacıyla araştırmacı tarafından hazırlanmış üç bölümden oluşan anket kullanılmıştır. Verilerin analizinde frekans, yüzde, ortalama, standart sapma, Ki-Kare (X2-Chi Square ve Cronbach’s Alpha i

  17. 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。

  18. Análise do perfil de liderança atual e ideal de treinadores de futsal de alto rendimento, através da Escola de Liderança no Desporto (ELD)

    OpenAIRE

    Varley Teoldo da Costa

    2003-01-01

    No futsal competitivo de alto rendimento, os treinadores/líderes desempenham um papel fundamental na conduçAo de suas equipes. Atualmente, poucos sâo os estudos que visam elucidar e discutir os fatores relacionados ao estilo de liderança dos treinadores através da autopercepçâo. A maioria dos estudos no futsal estSo focalizados nos aspectos táticos, técnicos e físicos da modalidade. Sâo objetivos deste estudo; veriricar a consistência interna da Escala de Liderança no Desporto (ELD) na língua...

  19. 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.

  20. 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

  1. İPEKLİ KUMAŞIN PHYTOLACCA DECANDRA L. BİTKİSİNDEN ELDE EDİLEN DOĞAL BOYA İLE BOYANABİLİRLİĞİNE PLAZMA UYGULAMASININ ETKİSİ

    OpenAIRE

    DAYIOĞLU, Habip; MERDAN, Nigar; EYÜPOĞLU, Seyda; KILINÇ, Mehmet; Dilek KUT

    2017-01-01

    Bu çalışmanın amacı ipek kumaşa plazma uygulamasının, ipek kumaşın doğal boya ile boyanabilirlik özelliklerine etkisinin incelenmesidir. Bu amaçla, bu çalışmada, ipek kumaş Phytolacca Decandra bitkisinden elde edilen doğal boya ile konvansiyonel yönteme göre boyanmıştır. Boyama işleminden önce, ipek kumaşın serisini giderilmiş ve ardından numuneler oksijen ve azot gazı ile düşük frekansta 1, 5 ve 10 dakika plazma işlemine tabi tutulmuştur. Plazma işlemine maruz kala...

  2. 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、

  3. SABİT ODAKLI SİLİNDİRİK P ARAB OLİK BİR YOdUNLAŞTIRlCIDA KIZGIN SU ELDE EDİLMESİ

    Directory of Open Access Journals (Sweden)

    FETHİ HALICI

    1999-12-01

    Full Text Available Bu çalışn1ada, odağı sabit yansıtıcısı ha reketli olarak imal edilen silindirik parabolik yoğunlaştırıcıda (SPY kızgın su ve sıcak su için yapılan deney sonuçları ve pe rfoımans değerleri verilmiştir. (SPY 'nın yansıtıcı yüzeyi 2ınx3 m boyutlarında olup toplam açıklık alanı 6 ın2 dir. Odaktaki yut ucu yüzey yan yana yerleştirilen 2 kanatlı borudan imal edilmiştir. Odak uzaklığı 6 m olan (SPY kuzey güney doğrultusu nda yerleştirilerek özel yapılan bir ınekanizma ile güneşi doğu batı doğrultusunda izl emesi sağJanmıştır. (SPY' da yaklaşık 120 °C değerlerinde kız gın su elde edilmiştir. leneylerde ölçümü yapıJan sıcaklık, debi ve güneş ışınını şiddeti değerleri verilerek, sistemin performansı irdelennıiştir

  4. Characterization of axially-symmetric magnetic elds

    CERN Document Server

    AUTHOR|(CDS)2087237; Buzio, Marco

    In solenoids for particle accelerators, the magnetic field is usually mapped by means of 3D Hall-sensing systems through a burdensome and costly procedure. A further problem arises from a coherent treatment between the beam physics requirements, the qualification of numerical models, the design and manufacturing of the magnet, and the magnetic measurements. For example, when the magnet is misaligned with respect to the longitudinal direction of the mapper, the fringe field shows spurious components. A method was therefore developed for measuring the magnetic field of axisymmetric magnets by exploiting their inherent symmetry. The method yields a measurement of the magnetic flux linked with a pair of sensing coils as a function of their longitudinal position. An induction transducer, sensitive to the longitudinal and radial components of the solenoid under test, has been designed and constructed. A transport system moves the transducer along the magnet axis, covering the full length of the magnet and including...

  5. 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

  6. Observation on the effect of phentolamine combined with pituitrin in the treatment of bronchiectasis with massive hemoptysis in eldly patients%酚妥拉明联合垂体后叶素在老年支气管扩张伴大咯血病症治疗中的效果观察

    Institute of Scientific and Technical Information of China (English)

    陈娟娟

    2016-01-01

    目的:分析酚妥拉明与垂体后叶素的联合疗法在老年支气管扩张伴大咯血治疗中的应用效果.方法:收治老年支气管扩张伴大咯血患者120例,随机平分为两组,均给予常规对症治疗,对照组在此基础上采用酚妥拉明治疗,观察组则采用酚妥拉明联合垂体后叶素治疗.统计两组治疗有效率,对比两组咯血时间、咯血量与不良反应情况.结果:观察组治疗有效率 95.0%,高于对照组的 78.3%;观察组咯血时间、总咯血量、不良反应率低于对照组,P<0.05.结论:在老年支气管扩张伴大咯血的治疗中,酚妥拉明与垂体后叶素的联合疗法能够有效地提高治疗有效率,不良反应少.%Objective:To analyze the effect of phentolamine combined with pituitrin in the treatment of bronchiectasis with massive hemoptysis in eldly patients.Methods:120 eldly patients with bronchiectasis and massive hemoptysis were selected,they were randomly divided into the two groups,all patients were treated with conventional symptomatic treatment, patients in the control group were treated with phentolamine on the basis of conventional therapy,patients in the observation group were treated with phentolamine combined with pituitrin treatment.We counted the treatment efficiency of the two groups,and compared the hemoptysis time,the amount of hemoptysis and adverse reactions.Results:The effective rate of the observation group 95% was higher than that of the control group of 78.3%.The hemoptysis time,the total amount of hemoptysis,the rate of adverse reaction of the observation group were lower than the control group,P<0.05.Conclusion:In the treatment of eldly patients with bronchiectasis and massive hemoptysis,phentolamine combined with pituitrin therapy can effectively improve the efficiency of treatment and with less adverse reactions.

  7. 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.

  8. Anadolu'ya Ait Makarnalık Buğdaylardan Cinslerarası Melezleme (Buğday x Mısır ile Elde Edilen Katlanmış Haploid (Doubled Haploid Hatların Tarımsal Kapasiteleri

    Directory of Open Access Journals (Sweden)

    A Şenay

    2009-03-01

    Full Text Available Bu çalışmada yerel makarnalık buğday çeşitlerden (T.durum Desf. Kunduru 1149, Berkmen 469 ve Çakmak 79 ve bunlardan elde edilen katlanmış haploid hatların tarla koşullarında tarımsal kapasiteleri, varyans analizi ve EKÖF testi ile karşılaştırıldı. Kunduru 1149'dan üretilen katlanmış haploid hatlar arasında, bitki yaşam oranı, başak çıkış zamanı, bitki boyu, başak uzunluğu, kardeşlenme sayısı, başakta başakçık sayısı, başakta tane sayısı, 100-tane ağırlığı, bitkide tane verimi ve hasat indeksi bakımından önemli farklılıklar bulundu. 'Berkmen 469'dan üretilen katlanmış haploid hatlar bitkide tane verimi ve kardeş sayısı dışında (P<0.05 morfolojik özelliklerin çoğunda önemli bir farklılık bulunmadı. Bu denemede 'Çakmak 79' dan üretilen hatlar arasında da hiçbir morfolojik özellikte önemli farklılık bulunmadı.

  9. Efficacy of peginterferon α-2a in combination with ribavirin in treatment of eldly patients with chronic hepatitis C%聚乙二醇化干扰素α-2a联合利巴韦林治疗老年慢性丙型肝炎疗效观察

    Institute of Scientific and Technical Information of China (English)

    于静; 刘博伟; 兰玲; 袁媛; 张昊; 贾长河

    2010-01-01

    目的 观察聚乙二醇化干扰素α-2a(Peaylated interferon α-2a,peg-IFNα-2a)联合利巴韦林治疗老年慢性丙型肝炎的临床疗效.方法 收集40例我院慢性丙型肝炎患者,其中老年患者(治疗组)20例,采用peg-IFNα-2a 135~180μg(个别患者维持剂量选择90μg)皮下注射,每周1次,利巴韦林600~1000 mg/d,疗程48周;成年患者(对照组)20例,采用peg-IFNα-2a 135~180μg皮下注射,每周1次;利巴韦林800~1200 mg/d,疗程48周.比较两组快速病毒学应答(RVR)率、早期病毒学应答(EVR)率、治疗结束时病毒学应答(ETVR)率、持续病毒学应答(SVR)率、无应答率及复发率,评价疗效并观察药物不良反应.结果 治疗组和对照组RVR率、EVR率、ETVR率、SVR率及复发率分别为60%、70%、75%、60%、10%、10%和75%、80%、85%、75%、5%、10%,组间比较无统计学差异.与对照组相比,治疗组中性粒细胞减低率更高(P<0.05);贫血及低血小板症,类流感样症状,胃肠道反应等不良反应,组间差异无统计学意义.结论 对于老年慢性丙型肝炎患者,积极控制基础病,使用常规剂量的PEG-IFN及小剂量利巴韦林,积极处理不良反应,仍可获得较高的有效率和较好的耐受性.%Objective To study the clinical efficacy of PEG-Interferon α-2a combined with ribavirin in eldly chronic hepatitis. Methods Forty patients with chronic hepatitis C were divided into treatment group and comparative group. The twenty eldly patients of treatment group receive peg-interferon α-2a 135-180 μg subcutaneous injection every week combined with ribavirin 600-1000mg/d for 48 weeks, and twenty adult patients of control group receive peg-interferon 135-180 μg subcutaneous injection every week combined with ribavirin 800-1200 mg/d for 48 weeks. The rapid virological response(RVR) rate, early virological response(EVR) rate, end of treatment virological response (ETVR) rate, sustained virological response(SVR) rate, nonresponder

  10. 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.

  11. 老年细菌性肺炎患者贫血发生情况及其影响因素的初步分析%Primary Analysis of Incidence of Anemia and Its Related Factors in Eldly Patients with Bacterial Pneumonia

    Institute of Scientific and Technical Information of China (English)

    唐四海

    2016-01-01

    目的:探讨老年细菌性肺炎患者贫血发生情况及其影响因素。方法回顾性分析61例老年细菌性肺炎患者和100例老年健康体检者实验室检查结果。比较两组血红蛋白(Hgb)水平及贫血发生率。另将老年细菌性肺炎组分为贫血组和非贫血组,比较两组C反应蛋白(CRP)、清蛋白(Alb)水平及体质指数(BMI)。分析老年细菌性肺炎组Hgb与CRP、Alb、BMI及年龄的相关性。结果老年细菌性肺炎组Hgb水平低于健康对照组,贫血率高于健康对照组,差异均有统计学意义(P<0.01);老年细菌性肺炎贫血组CRP高于老年细菌性肺炎非贫血组、而Alb、BMI低于老年细菌性肺炎非贫血组,差异均有统计学意义(P<0.01);细菌性肺炎组Hgb水平与CRP呈负相关(r=-0.258,P<0.05),与Alb呈正相关(r=0.263,P<0.05),与BMI、年龄的相关性均无统计学意义(r分别为0.156、-0.039,P>0.05)。结论老年细菌性肺炎患者贫血发生率较高,营养不良、炎症反应可能是其重要原因。%Objective To investigate the incidence of anemia and its related factors in eldly patients with bacterial pneumo-nia.Methods A retrospective analysis of the results of laboratory tests of 61 cases of elderly patients with bacterial pneumonia and 100 cases of elderly healthy individuals was carried out.The level of hemoglobin(Hgb) and the anemia rate were compared between elderly patients with bacterial pneumonia group and the control group. The elderly patients with bacterial pneumonia group was divided into anemia group and non anemia group,and Creactive protein(CRP),albumin(Alb)and body mass index(BMI) were compared be-tween two groups.The correlation between Hgb and CRP,Alb in the elderly patients with bacterial pneumonia group.Results The level of Hgb of elderly patients with bacterial pneumonia group was significantly lower than the control group,and the anemia rate

  12. Düsük Kalorili Konya Linyitlerinin Azotlu Gübre Olarak Kullanılması

    Directory of Open Access Journals (Sweden)

    Hüseyin DEVECİ

    2009-04-01

    Full Text Available Bu çalısmada, Türkiye'nin genç linyitlerinden olan Konya çevresindeki düsük kalori degerli Beysehir, Ilgın ve Ermenek linyitlerinin hümik asit (HA ve azot içerikleri belirlenmistir. Linyitlerden maksimum azot içerikli organo-mineral gübre elde edilmesi için optimum deney sartları tespit edilmistir. Linyit ve HA'lerden elde edilen organo-mineral gübrelerin sera sartlarında uygulanabilirligi arastırılmıs ve tarımda kullanılabilecegi sonucuna varılmıstır.

  13. 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

  14. Soğan (Allium cepa ve Sarımsaktaki (Allium sativum Bazı Fenolik Bileşiklerin HPLC Yöntemiyle Tayin Edilmesi

    Directory of Open Access Journals (Sweden)

    Sibel YÜNLÜ

    2016-09-01

    Full Text Available Bu çalışmada, Isparta yöresindeki soğan ve sarımsak örneklerinin fenolik madde profilleri yüksek performanslı sıvı kromatografisi (HPLC metodu ile belirlenmiştir. Tayini yapılan fenolik maddeler, gallik asit, protokateşuik asit, p-hidroksibenzoik asit, klorojenik asit, kafeik asit, ferulik asit, ellagik asit gibi fenolik asitlerle; miyrisetin, kuersetin, luteolin, kamferol, isorhamnetin gibi flavonoidlerdir. Üç farklı yöntemle hazırlanan örnekler için en iyi ekstraksiyon yönteminin, 1,2 M HCl içeren %50 metanol ile 80 °C’de 2 saat hidroliz olduğu belirlendi. Buna göre en çok bulunan fenolik maddeler kırmızı soğanda kuersetin iken, yeşil soğanda ve beyaz soğanda p-hidroksibenzoik asit, sarımsakta ise miyrisetin olarak tespit edildi. Kırmızı soğanda, 13,6±0,06 µg/g kuersetin, yeşil soğanda 18,6±0,6 µg/g p-hidroksibenzoik asit, beyaz soğanda 10,5±0,07 µg/g p-hidroksibenzoik asit, sarımsakta ise 4,5±0,10 µg/g miyrisetin belirlendi.

  15. Bazı Simpatomimetik Aminlerin 2,4-Dinitrobenzensülfenil Türevleri I: Türevlerin hazırlanması ve karakter ize edilmesi

    OpenAIRE

    ., Rasim TULUS ve Lale ZEYTİNOĞLU

    2013-01-01

    Serbest bazı eterli çözeltide 2,4-dinitrobenzensülfenil klorürle re­aksiyona sokmak suretiyle 6 simpatomimetik aminin (amfetamin, me-tamfetamin, efedrin, metoksifenamin, mefentermin ve siklopentamin) N-2,4-dinitrobenzensülfenil türevi (Si-Sg) hazırlandı. Sarı renkli olan bu türevler elementel analiz, Rast usulü ile molekül vezni tayini, tita-nometrik titrasyonla ekivalan vezni tayini, erime noktası, çözünürlük­lerinin tayini suretiyle karakterize edildi. Efedrin türevinde 2,4-dinit­robenzensü...

  16. Çeşitli kalsiyum boratların sentezi, karakterizasyonu ve alev geciktirici etkinliklerinin incelenmesi

    OpenAIRE

    DURĞUN, Zeynep Gülşah

    2010-01-01


      Türkiye sahip olduğu bor rezervleri ve cevherlerinin kalitesi ile dünyanın önde gelen ülkelerinden biri olmasına rağmen minerallerin çeşitliliği ve işlenebilirliği yetersizdir. Bu nedenle değişik endüstriyel uygulamalara yönelik sentetik bor bileşiklerinin elde edilmesi önemli bir ihtiyaçtır. Bilinen yaklaşık 230 çeşit bor bileşiği mevcuttur ve bir kalsiyum hekzaborat türevi olan Nobleit de bunlardan bir tanesidir. Yangınlarda can ve mal kaybın...

  17. 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)

    OpenAIRE

    Murat GÜLER; H. Nejat BASIM

    2016-01-01

    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...

  18. Conditional symmetries in axisymmetric quantum cosmologies with scalar ?elds and the fate of the classical singularities

    CERN Document Server

    Zampeli, Adamantia; Terzis, Petros A; Christodoulakis, T

    2015-01-01

    In this paper, the classical and quantum solutions of some axisymmetric cosmologies coupled to a massless scalar field are studied in the context of minisuperspace approximation. In these models, the singular nature of the Lagrangians entails a search for possible conditional symmetries. These have been proven to be the simultaneous conformal symmetries of the supermetric and the superpotential. The quantization is performed by adopting the Dirac proposal for constrained systems, i.e. promoting the first-class constraints to operators annihilating the wave function. To further enrich the approach, we follow \\cite{Christodoulakis:2012eg} and impose the operators related to the classical conditional symmetries on the wave function. These additional equations select particular solutions of the Wheeler-DeWitt equation. In order to gain some physical insight from the quantization of these cosmological systems, we perform a semiclassical analysis following the Bohmian approach to quantum theory. The generic result ...

  19. 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.

  20. 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.

  1. 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...

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

    Directory of Open Access Journals (Sweden)

    Cüneyt AKAR

    2013-01-01

    Full Text Available 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.

  4. 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.

  5. Atık Azaltma Metotlarının Akü Üretimine Entegre Edilmesi: Metot Geliştirme Ve Uygulama / Integration of Waste Reduction and Battery Production: Method Development and Application

    Directory of Open Access Journals (Sweden)

    Sibel Uludağ Demirer

    2012-12-01

    Full Text Available Bu çalışma çevre yönetimi ile entegre edilmiş üretim sistemlerinin önemli çevresel ve ekonomik faydalar getireceği düşüncesini baz alarak üretim sistemine yeni bir yaklaşım önermeyi amaçlamıştır. Bu yaklaşım için izlenmesi gereken yol genel olarak belirlenmiş ve çevreye dost ve az madde kullanarak çok üretme felsefesinin karar verme mekanizmalarına taşınması gerektiği vurgulanmıştır. Bu yaklaşım üretim sisteminde var olan uygulamaları fark eder ve alternatif atık yönetimi çözümlerini de araştırarak en çok faydayı sağlayan çözümü bulmaya çalışır. Hazırlanan metodolojide veri toplama ve üretim sisteminin analizi atıkların oluşumu ve azaltma alternatifleri göz önünde tutularak yapılır. Atıkların yönetimine ilişkin alternatifler araştırıldıktan sonra kazanımlar karar verme aşamasına iletilir. Önerilen metodolojinin akü üretimi yapan bir fabrikada uygulaması belli bir aşamaya kadar yapılmış ve fabrika yöneticilerine sonuçlar hakkında bilgi verilmiştir. Integration of Waste Reduction and Battery Production: Method Development and Application This study presents an environmentally integrated manufacturing system analysis for companies looking for the benefits of environmental management in achieving high efficiency levels. The roadmap for such a management system is established and it is shown that the decision making should consider producing more using less and nonhazardous. This approach recognizes the already existing activities while investigating alternative waste management solutions. The methodology consists of data collection, operational analyses of the processes, identification of wastes and evaluation of waste reduction alternatives proposed both technically and economically. The proposed methodology is examined in a car battery manufacturing company and results are reported to the decision makers.

  6. Urinary tract infections in pregnants who were addmitted University Hospital Obstetric and Gyneacology Outpatient Clinics in Tokat TURKEY: Evaliuation of three years.

    Directory of Open Access Journals (Sweden)

    Asker Zeki OZSOY

    2016-06-01

    Full Text Available Amac: Bu calismada, Tokat ilinde Universite Hastanesi Kadin Hastaliklari ve Dogum klinigine basvuran gebelerde idrar yolu enfeksiyonu gorulme sikliginin incelenmesi ve idrar kulturunde ureme saptanan mikroorganizmalarin tespit edilmesi amaclanmistir. Gerec ve Yontemler: Tokat Gaziosmanpasa Universitesi Kadin Hastaliklari ve Dogum klinigine Ocak 2012- Haziran 2015 tarihleri arasindaki yaklasik 3.5 yillik donemde basvuran gebelerde idrar yolu enfeksiyonu gorulme sikligi ve ureyen ajan patojenler incelenmistir. Tam idrar tetkiki hastanemiz biyokimya laboratuarinda ve idrar kulturu analizleri hastanemiz mikrobiyoloji laboratuarinda degerlendirilmistir. Elde edilen sonuclarin otomasyon sistemi uzerinden retrospektif olarak ulasilmasi ile verilerimiz tespit edilmistir. Bulgular: Hastanemize Ocak 2012 ve Haziran 2015 tarihleri arasinda basvuran 2245 gebe hasta calismaya dahil edilmistir. Calismaya alinan hastalarin (n=2245 yas ortalamasi 28.0+/-5.63 (min:16, maks:45 olup, %86.5i (n=1942 35 yas altinda, %13.5i (n=303 35 yas ve uzerindedir. Hastalarin %36.5inde (n=819 gebelikte idrar yolu enfeksiyonu oldugu saptanmistir. 35 yas altindaki hastalarin %37.3unde (n=725 idrar yolu enfeksiyonu saptanirken, 35 yas ve uzerindeki hastalarda bu oran %31.0dir (n=94 (p<0.05. 35 yas altinda gebe olmak idrar yolu enfeksiyonu gecirme acisindan, 35 yas ve uzerinde gebe olmayana gore 1.3 kat daha riskli bulunmustur (OR=1.32; CI=1.02-1.72. Sonuc: idrar yolu enfeksiyonu gebelikte en onemli ve en sik gorulen hastaliklar arasinda yer almaktadir. Tedavi edilmeyen enfeksiyon ile preterm eylem ve buna bagli komplikasyonlar arasinda yakin iliski mevcuttur. Gebelerde idrar yolu enfeksiyonu tedavi edilmesi ve gozardi edilmemesi gereken hastaliklardan biridir. [J Contemp Med 2016; 6(2.000: 100-103

  7. The effect of continuous exposure to electromagnetic fïeld on four successive generations of mice

    Directory of Open Access Journals (Sweden)

    Oentoeng Soeradi

    2002-03-01

    Full Text Available The objective of this study is to know the biobgical effects of  electromagnetic field treatment on four successive generations of mice. Fourty eight male and female mice of Swiss Webster Strain, 3 months of old, and 35 - 40 g body weight, were kept in a controlled environment and fed a standard diet. Mice were divided into 6 groups of four couples each. The first group was exposed to electromagnetic field of I kV/10 cm, the second group to 2 kV/10 cm, and the third group to 3 kV/10 cm. The remaining 3 groups were served as untreated controls of the first, second, and third group, respectively. Each couple of mice was placed in a cage (26x20x11 cm with wire metal cage tops. The cages of experimental groups with mice inside, were then put on the negative terminal plate of a pair of parallel aluminium plate electrodes. These cages were  perpendicular to the positive electrode plate at a distance of I0 cm. Subsequently, the electrodes were connected to stepup transformer as an alternating current power supply. All mice belonging to experimental and untreated control groups were allowed to mate, gastate, and deliver the first up to fourth generations, During investigation, all generations of experimental groups were continuously treated to electromagnetic field, while generations of untreated control groups received no treatment to electromagnetic field, During the study, all mice were housed in a room having a temperature of 26ᵒ C and a light - dark cycle of 12:12 hours. The results of this study showed that exposure of mice to electromagnitic field results in reduced fertility with no change in sex ratio of the offspring. Exposure to electromagnetic field, however, were effective in inducing congenital anomalies, such as micropthalmy, white eyes, short hind legs, dwarf mice, and tumors in both sexes of the offspring which caused of death after 3 - 4 months of old. A large mortality rate were found, especially in the third and fourth generations. No congenital anomalies and tumors were noted in untreated controls. ln conclusion, we suggest that several facts which found in this study were the result of changes in genetic material of the sperm or eggs during spermatogenesis or oogenesis, respectively, i.e. a mutagenic effect. This interaction between electromagnetic field and the living cell, may then cause biological effects on cells, tissues, and organs, so that finally there are consequences for the whole organisms. (Med J Indones 2002; 11: 3-10Keywords: electromagnetic field, fertility, mortality rate, congenital anomalies, tumor, mice

  8. 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.

  9. 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

    measurement of the field strength at the output of the waveguide. Field enhancement factors greater than 20 are demonstrated and record-high field strengths of > 1.4 MV/cm are reached. We find an excellent agreement between the two independent methods of field measurement and a numerical 3D full...

  10. 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.

  11. 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

    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 for these di...

  12. Research of photonic crystal and its application in sensorfi eld%光子晶体的研究及其在传感器中的应用

    Institute of Scientific and Technical Information of China (English)

    张文毓

    2014-01-01

    光子晶体是指具有光子带隙(PBG)特性的人造周期性电介质结构,有时也称为PBG光子晶体结构。按照光子晶体的光子禁带在空间中所存在的维数,可以将其分为一维光子晶体、二维光子晶体和三维光子晶体。光子晶体传感器应用包括应变传感器、温度传感器、化学传感器、光子晶体光纤传感器、长周期光纤光栅(LPFG)生物传感器、LPFG化学传感器等。本文从光子晶体传感器的概述、研究现状和应用几方面对光子晶体传感器的应用进展进行了综述,希望对光子晶体传感器有一个比较全面的了解。%Photonic crystal is a man-made periodic dielectric structure with photonic band gap(PBG), sometimes which is also called PBG photonic crystal structure. According to the dimension of PBG existed in the space, the photonic crystal may be divided into the one- dimensional, the two-dimensional and the three dimensional photonic crystal. The photonic crystal has applications in sensor field including strain sensor, temperature sensor, chemistry sensor, opticalfi ber sensor, long period optical fiber diffraction grating (LPFG) biosensor, LPFG chemistry sensor and so on. A overview of photonic crystal sensors is given. Current research and applications of photonic crystal sensors in some aspects are reviewed, too.

  13. 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.

  14. 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.

  15. 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...

  16. 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.

  17. Halkla İlişkilerde Meslekleşme Sorunu

    Directory of Open Access Journals (Sweden)

    Burcu Öksüz

    2015-08-01

    Full Text Available Halkla ilişkiler, herkesin yapabildiği belirli bir eğitimi ve yeterliliği gerektirmeyen bir iş olarak görülmektedir. Halkla ilişkilerin bir meslek olmadığı düşüncesi, halkla ilişkiler eğitimi alan kişilerin işsiz kalması, halkla ilişkiler uygulamacılarının alt konumlarda istihdam edilmesi ve düşük ücretle çalıştırılması gibi pek çok sorunun kaynağını oluşturmaktadır. Bu çalışmanın amacı, halkla ilişkilerin meslekleşme sorununu nedenleri ile irdelemektir. Bu doğrultuda, halkla ilişkilerin meslek konumunu elde edememesine neden olan faktörler tartışılmıştır. Halkla ilişkiler mesleğinin hak ettiği değere sahip olamamasının altında, toplum tarafından tanınmama, imaj sorunu, profesyonel standartların ve yetkinliklerin belirsizliği, kamu yararı sağlamadığı görüşü ile akreditasyon ve lisanslamanın olmaması gibi pek çok faktör yatmaktadır. 

  18. 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

  19. 社区中老年体重超标人群非药物干预效果分析%Analysis on the effect of non-drug intervention for middle-aged and eldly overweight people in community

    Institute of Scientific and Technical Information of China (English)

    郑莉; 陈淑红

    2015-01-01

    Objective:To investigate the effect of health education,diet and exercise quantization to reduce the weight of middle-aged and elderly overweight/obese people in community.Methods:68 cases of overweight/obese for strengthen management by non-drug treatment for six months.Results:There was statistically significant of weight index,systolic blood pressure,diastolic blood pressure,health knowledge awareness,diet and exercise evaluation(P<0.01),waist circumference and fasting blood glucose(P<0.05)before and after management.Conclusion:Health education,quantify the diet control,exercise quantitative guidance can improve the intervention object of non drug therapy compliance,establish a good way of life,effectively reduce the body mass index of middle-aged and elderly overweight/obesity in community and control weight.%目的:探讨应用健康教育、饮食与运动量化指导以降低社区中老年超重/肥胖人群体重的效果。方法:通过非药物对68例超重/肥胖人群进行半年的强化管理。结果:管理前后对比:体重指数、收缩压、舒张压、健康知识知晓率、饮食与运动评价(P<0.01)、腰围、空腹血糖(P<0.05)具有统计学意义。结论:健康教育、量化饮食控制、量化运动指导等可以提高干预对象对非药物治疗的依从性、建立良好的生活方式,有效降低社区中老年超重/肥胖人群的体重指数、控制体重。

  20. TÜREV ÜRÜNLER VE ALMANYA'DA BİREYSEL YATIRIMCILARIN TÜREV ÜRÜNLERDEN ELDE ETTİKLERİ KAZANÇLARIN VERGİLENDİRİLMESİ

    OpenAIRE

    EKİNCİ, FİLİZ

    2015-01-01

    NEVRUZ IN OUR FOLK POETRY One of the oldest traditional spring festivals in Turkish world is Nevruz. This festival which has been celebrated for ancient time in different names and in different rituals coincidences with the date March, 21 in which the day-time and the night is equal, according to the Turkish Calendar with 12 Animals. It is also accepted that Nevruz is the date when Kok-Turks left from Ergenekon Valley and gained their independence. Nevruz has been disguised within the various...

  1. 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.)

  2. Demir ve Alüminyumun Doğal Sularda UV Spektrofotometrik Tayini İçin Yöntem Geliştirilmesi ve Elde Edilen Verilerin Kemometrik Kalibrasyon Yöntemleriyle Değerlendirilmesi

    Directory of Open Access Journals (Sweden)

    A. Hakan AKTAŞ

    2015-01-01

    Full Text Available In this study, principal component analysis method (PCA, principal component regression method (PCR, partial least squares method (PLS of chemometry calibration methods, are successfully realized on quantitation of Fe³⁺ and Al³⁺ present at natural water. The data gathered from UV- Visible Spectroscopy are evaluated chemometrically. In the application two distinctive ligand chrome azurol S (CAS and pyrocatechol violet (PCV are tested and studies are proceeded with CAS due to more stable results that are obtained. Optimum parameters (ligand amount, pH, waiting period, relation between metal concentration and absorbance, foreign ion effect and conditions of Fe³⁺ and Al³⁺ CAS and their complexes are determined with spectrophotometric methods. After the optimum conditions are provided, spectrophotometric determinations of natural water including Fe³⁺ and Al³⁺ are realized and obtained data are evaluated as chemometry

  3. C ause A nalysis on W elding C racks of Q 345 H ot-R olled H-beam S teel%Q345 H型钢焊接开裂原因分析

    Institute of Scientific and Technical Information of China (English)

    苏会德

    2014-01-01

    Cracks during the welding of Q345 Hot-rolled H-beam steel resulted in the failure of components. The microstructure and chemical composition of the weld, the magnitude of the internal stress of the weld and the fillet weld size of the tack weld are analyzed in this paper. Through the analysis, considered that the wrong location of tack weld and the too small fillet weld size of the weld during welding are the essential cause of cracks.%材质为Q345的热轧型钢在焊接过程中出现了开裂,导致了构件的报废。从焊缝组织成分、焊缝内应力、定位焊缝焊脚尺寸3个方面进行了分析,确认施焊过程中定位焊缝位置选择不正确、焊脚尺寸过小造成焊缝内部严重质量缺陷,从而导致焊缝开裂。

  4. The Analysis of Correlation between the Periodontal Disease and Diabetes in eldly people%老年牙周病与糖尿病的相关性分析

    Institute of Scientific and Technical Information of China (English)

    朱顺云; 谢如钢; 张文; 葛夏青; 徐李萍; 唐南燕

    2012-01-01

    目的:探讨老年人糖尿病患者牙周疾病的发生情况,以及牙周病与糖尿病之间的相互关系.方法:选择我院就诊的140名同时伴有糖尿病的老年牙周病患者,将其随机分成A、B、C3组,A组86例为实验组,同时进行牙周病与糖尿病的系统治疗.B、C组为对照组,其中B组28例只进行牙周病的治疗,C组26例只进行糖尿病的治疗.结果:牙周治疗效果A组明显高于B组(P<0.05),糖尿病的治疗效果A组高于C组(P>0.05).结论:老年牙周病和糖尿病之间存在相关性,糖尿病治疗与牙周病治疗之间相互影响.%Objective: To study the occurrence of periodontal disease in old patients with diabetes and the relationship between periodontal disease and diabetes. Methods: Choose 140 our hospital patients with periodontal disease associated with diabetes in elderly, and randomly divided into A, B, C groups. Group A of 86 cases for the experimental group.simultaneously carries on system treatment of periodontosis and diabetes.Group B, C were the control groups. And Group B of 28 cases was only for the treatment of periodontal disease.Group C of 26 cases was only for the treatment of diabetes. Results: Periodontal treatment effect in group A was significantly higher than in group B (P0.05). Conclusion: There is correlation between periodontal disease and diabetes in old patients with diabetes. The treatment of periodontal disease interacts with the treatment of diabetes.

  5. Lateral agenezisi olan bir hastanın multidisipliner bir yaklaşımla rehabilitasyonu

    Directory of Open Access Journals (Sweden)

    Nihal Hamamcı

    2012-07-01

    Full Text Available

    Lateral incisor agenesis is an important cause for the esthetic smile disharmony due to strategic location. These clinical cases besides multidisciplinary are always treated under the strong influence of either the orthodontic or the prosthodontic discipline. The first approach consists of orthodontic mesial replacement of the missing lateral with the existing canine and giving it an incisor shape, whereas the last approach constitutes a conventional fixed-partial-denture treatment or implant supported prostheses for the missing incisors. This clinical report represents the multidisciplinary rehabilitation of a 21-year-old male with bilateral congenitally missing upper lateral incisors. After orthodontic therapy and providing the necessary space for the laterals, bilateral implant placement and prosthetic treatment was carried out. Incorporation of zirconium reinforced abutments and all ceramic crowns to the therapy had provided attractive and confident smile for the patient.

    Keywords: Lateral incisor agenesis, orthodontic therapy, single tooth implant therapy, esthetics.

     

    ÖZET

    Lateral diş agenezisi gülümsemedeki stratejik pozisyondan dolayı büyük bir estetik sorun yaratmaktadır. Bu olgularda estetik rehabilitasyon, multidisipliner olmakla birlikte, genelde ya ortodontik ya da protetik tedavi yaklaşımlarının etkisi altında yapılmaktadır. Birinci yaklaşım kanin dişin lateral diş boşluğuna ortodontik tedaviyle getirilip lateral diş formunda restore edilmesinden ibarettir. İkincisi ise lateral diş boşluğunun ortodontik tedaviyle sağlanmasından sonra tek diş implant restorasyonu veya geleneksel köprü protezi ile restore edilmesi şeklindedir. Bu olgu raporunda, çift taraflı üst lateral diş agenezisi olan 21 yaşındaki erkek hastanın multidisipliner yaklaşımla tedavisi anlatılmaktadır. Ortodontik tedavi ile lateral dişler için oluşturulan boşluklara tek di

  6. 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

  7. Homojen Karışımlı Sıkıştırma Ateşlemeli (HCCI bir motorun tek-bölgeli modelleme yöntemi kullanılarak analizi

    Directory of Open Access Journals (Sweden)

    Halit Yaşar

    2016-12-01

    Full Text Available HCCI motorların modellenmesinde sıfır-boyutlu modeller yaygın olarak kullanılmaktadır. Bu modeller tek veya çok bölge içerebilirler. Bununla birlikte, en basit yaklaşım yanmış ve yanmamış gazı içeren tek bölge yaklaşımıdır. Bu tip sıfır-boyutlu modellerde yanma olayı Wiebe fonksiyonu ile modellenmektedir. Bu makalede, HCCI prensibine göre çalışan tek silindirli bir Ricardo Hydra motoru tek bölge yaklaşımı kullanılarak modellenmiştir. Analiz çalışmalarında SPICE (Simulated Petrol Internal Combustion Engine yazılımının modifiye edilmiş bir versiyonu olan TRICE yazılımı kullanılmıştır. Yanma analizlerinde, HCCI yanma modellerinde standart Wiebe fonksiyonu kullanımının maksimum silindir basıncının yüksek olarak tahmin edilmesi sonucunu doğurması nedeniyle, standart Wiebe fonksiyonunun modifiye edilmiş bir şekli olan Double-Wiebe fonksiyonu kullanılmıştır. Analizler, n-Heptan-Toluen karışımı için üç hava fazlalık katsayısı değerinde gerçekleştirilmiş ve elde edilen sonuçlar bir Avrupa Komisyonu Marie Curie destek programı (FP-6 projesi kapsamında Shell Araştırma Merkezine ait motor test laboratuvarında ölçülen deneysel verilerle karşılaştırılmıştır.

  8. Bir Kriz İletişimi Yönetimi Vaka Analizi: Kaybolan Malezya Havayolları MH370 Sefer Sayılı Uçağı

    Directory of Open Access Journals (Sweden)

    İnci ÇINARLI

    2014-10-01

    Full Text Available Kriz iletişimi yönetiminde kriz ile ilgili olguların tespit edilmesi büyük önem taşımaktadır. Bu olgular kriz çeşidinin sınıflandırılmasına ve dolayısıyla da etkili ‘kriz tepki stratejilerinin’ uygulanmasına olanak verir. Bu makalede, Malezya Havayollarının MH370 sefer sayılı uçağının kriz yönetim süreci bir vaka analizi olarak değerlendirilmiştir. Uçak, içindeki 227 yolcu ve 12 mürettebat ile 8 Mart 2014 tarihinde kaybolmuş ve çok-uluslu arama-kurtarma çalışmalarına rağmen sonuç elde edilememiştir. Bu amaçla, Timothy W. Coombs’un  ‘kriz yönetiminin üç evresi’ söz konusu vakanın kriz yönetimi sürecine uygulanmıştır. Bu bağlamda, söz konusu krizin yönetilmesinde kullanılan ‘kriz tepki stratejileri’ Coombs’un ‘Durumsal Kriz İletişimi Kuramı’ (SCCT dâhilinde değerlendirilmiştir. Ayrıca Malezya Havayollarının (ve en büyük hissedarı Malezya hükümetinin kriz iletişimi yönetimi uygulamaları ve araçları da analiz edilmiştir. Sonuç olarak, alışılagelenin çok üzerinde bir süre boyunca olgulara ulaşamamanın bir enformasyon vakumu oluşturarak spekülasyonları ve söylentileri içine çektiği ortaya konulmuştur.

  9. 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

  10. On Integers, Primes and UniqueFactorization in Quadratic Fields

    OpenAIRE

    Hedenlund, Alice

    2013-01-01

    Abstract. This thesis will deal with quadratic elds. The prob- lem is to study such elds and their properties including, but not limited to, determining integers, nding primes and deciding which quadratic elds have unique factorization. The goal is to get famil- iar with these concepts and to provide a starting point for students with an interest in algebra to explore eld extensions and inte- gral closures in relation to elementary number theory. The reader will be assumed to have a basic kn...

  11. 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.

  12. Determination of rate and causes of wastage of blood and blood products in Iranian hospitals.

    Science.gov (United States)

    Far, Rafat Mohebbi; Rad, Fatemeh Samiee; Abdolazimi, Zahra; Kohan, Mohamad Mehdi Daneshi

    2014-06-01

    ılan servislerin ve kan bankalarının standartlarının geliştirilmesi için, kan ürünleri israfını etkileyen en önemli nedenleri göz önünde tutacak şekilde kan ve kan ürünlerinin toplanması, depolanması, test edilmesi ve dağıtılmasında yüksek kalite kontrolün elde edilmesine yönelik olarak geniş kapsamlı standartlar oturtulmaktadır.

  13. 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

  14. 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

  15. Dokuzuncu Sınıf Tarih Ders Kitabında Yer Alan Görseller Hakkında Öğretmen Görüşleri: Trabzon Örneği Perceptions of History Teachers about Visual Materials of Ninth Grade History Textbook

    Directory of Open Access Journals (Sweden)

    Ebru DEMİRCİOĞLU

    2013-09-01

    Full Text Available Textbooks are important tools of teaching and learning process ineducation system. There are some important criteria in preparingtextbooks. Especially visual materials which should be paid attention inthe preparation process of textbooks are important. Visual materials ofa qualified textbook should also have the following criteria which are asfollows: harmony between text and visual materials, clarity andcatching attention of students.The purpose of this thesis is to determine perceptions of historyteachers about visual materials of ninth grade history textbooks. Theresearch carried out experienced history teachers who teach history inthe city center of Trabzon and on the coast of the province of Trabzon.The purposive sampling was used in the research to choose historyteachers. A qualitative approach was used in the study and two datacollection tools which are an open-ended questionnaire and a semistructuredinterview to gather data. 49 history teachers participatedopen-ended questionnaire and semi-structured interviews carried outwith 8 teachers. In the light of the data, it seems that the great majorityof history teachers do not know how to use visual materials in historytextbooks and think that visual materials in the ninth grade historytextbooks do not explain texts properly. Furthermore, they also statedthat some visual materials in the ninth grade history textbook are notclear and understandable. Ders kitapları eğitim ve öğretim sürecinin en önemli unsurları arsında yer almaktadır. Bu materyallerin hazırlanmasında pek çok husus dikkate alınmalıdır. Ders kitabı hazırlama sürecinde dikkat edilmesi gereken hususların başında görseller gelmektedir. Nitelikli bir ders kitabında görseller metinle uyumlu olmanın yanında, açık, anlaşılır ve öğrencilerin ilgisini çekecek şekilde yapılandırılmalıdır.Bu çalışmanın amacı, Trabzon ilinde bulunan tarih öğretmenlerinin, dokuzuncu sınıf Tarih ders kitab

  16. 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.

  17. Genetik Epidemiyolojide Kullanılan Bazı Araştırma Tasarımları

    Directory of Open Access Journals (Sweden)

    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.

  18. 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

  19. Personal Cyber Security Provision Scale development studyKişisel Siber Güvenliği Sağlama Ölçeği geliştirme çalışması

    Directory of Open Access Journals (Sweden)

    Osman Erol

    2015-07-01

    Full Text Available The aim of this study is to develop a scale to determine internet users behavior related to cyber security. In this context created an item pool in accordance with expert opinion. This item pool was administered to 810 people for exploratory factor analysis. In exploratory factor analysis; principal component analysis method which is commonly used and Varimax vertical rotation method to determine the factor structure was used. Scale was administered to 292 people and structural equation modeling approach was applied to confirmation study.As a result of factor analysis,“Personal Cyber Security Provision Scale" which consists of 5 factors and 25 items and has a good compatibility was occurred.   Özet Bu araştırmanın amacı internet kullanıcılarının siber güvenlik ile ilgili davranışlarını belirlemeye yönelik bir ölçek geliştirmektir. Bu bağlamda öncelikle uzman görüşü doğrultusunda 26 maddelik bir madde havuzu oluşturulmuştur. Bu madde havuzu yapı geçerliliğinin test edilmesi için Facebook sosyal paylaşımda bir uygulamayı kullanan 810 kişiye uygulanarak açımlayıcı faktör analizi yapılmıştır. Açımlayıcı faktör analizinde en sık kullanılan yöntem olan temel bileşenler analizi yöntemi kullanılmış, ölçekteki faktör yapısını belirlemek için ise Varimax - dikey döndürme yöntemi kullanılmıştır. Ölçeğin doğrulama çalışması için ise aynı sosyal ağ uygulamasını kullanan ve daha önce ölçeğin uygulandığı kişilerin elendiği292 kişinin verisi kullanılarak yapısal eşitlik modeli yaklaşımı uygulanmıştır. Açımlayıcı faktör analizi sonucunda 5 faktörlü ve 25 maddeden oluşan; doğrulayıcı faktör analizi sonucunda ise elde edilen uyum indekslerine göre iyi bir uyuma sahip "Kişisel Siber Güvenliği Sağlama Ölçeği" ortaya çıkmıştır.

  20. 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

  1. 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.

  2. 探讨老年人红细胞免疫功能与心脑血管突发事件及恶性肿瘤的相关性%ASSOCIATION BETWEEN ERYTHROCYTIC IMMUNE FUNCTION AND CARDIO-/CEREBROVASCULAR ACCIDENTAL EVENTS AND MALIGNANT TUMERS IN ELDLY PATIENTS

    Institute of Scientific and Technical Information of China (English)

    曹平良; 邱元芝; 李素珍; 张水生

    2004-01-01

    目的:探讨红细胞免疫功能(EIF)与老年人急性心脑血管突发事件及恶性肿瘤的相互关系.方法:随机连续观测742例60岁以上老年人的EIF,随访4年,以急性心肌梗塞(AMI)、不稳定性心纹痛(UA)、心源性猝死(sudden cardiac death,SCD)、急性脑卒中(acute stroke,AS)和恶性肿瘤(malignant tumor,MT)等主要事件为观察终点.参照其中102例健康对照组的红细胞膜C3b受体花环率(RBC-C3bRR)水平将观察对象分为A1、A2、A3、A4共四组.以RBC-C3bRR为应变量,用年龄(AGE)、性别(SEX)、体重指数(BMI)、吸烟(CIG)、脂蛋白(a)[Lp(a)]、血浆总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白(LDL)、高密度脂蛋白(HDL)、收缩压(SBP)、舒张压(DBP)、空腹血糖(FPG)作自变量,入选和剔除变量的F界值分别为F≥3.84和F≤2.71,进行多元线性逐步回归分析;并且利用多因素非条件Logistic回归法,分析RBC-C3bRR、红细胞免疫复合物花环率(RBC-ICR)及以上传统危险因素对观察终点的影响.结果:①吸烟组、冠心病组、脑卒中组及高脂血症组的RBC-C3bRR显著低于健康对照组(P<0.001-0.01),而RBC-ICR则明显高于健康对照组(P<0.001-0.01).②经回归分析最后CIG、Lp(a)、LDL、TC和AGE被选入方程,确定系数R2=0.69,F=31.7,P=0.0082,标准偏回归系数Beta依次为-0.51、-0.44、-0.41、-0.33、-0.27.③危险度分析显示A1、A2、A3、A4四组的优势比0R(95%置信区间)分别为1(参照组)、1.6(1.3-1.9)、2.1(1.8-3.3)、2.8(2.0-4.1),趋势检验x2=21.54,P=0.0031.结论:红细胞免疫功能与吸烟、脂蛋白(a)、低密度脂蛋白、年龄有显著负相关关系,是老年人心脑血管突发事件及恶性肿瘤较强的致病因子.

  3. 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.

  4. Florística e síndromes de dispersão de um remanescente de Floresta Ombrófi la Mista em sistema faxinal / Plants and dispersal syndromes of a remanent Mixed Ombrophilous Forest in a fi eld system

    Directory of Open Access Journals (Sweden)

    Sâmara Regina de Almeida

    2008-05-01

    Full Text Available O presente estudo identifi cou e classifi cou as espécies arbóreo-arbustivas de acordo com suas síndromes de dispersão de diásporos, em uma Floresta Ombrófi la Mista em sistema faxinal, localizada no município de General Carneiro, PR. Foram encontradas 39 espécies, distribuídas em 31 gêneros de 21 famílias. As famílias que mais se destacaram foram: Lauraceae(5, Aquifoliaceae (4, Myrtaceae, Sapindaceae e Euphorbiaceae (3, as demais famílias possuem dois ou um representante. O valor total do índice de diversidade de Shannon foi 3,26. Houve o predomínio de espécies zoocóricas (66,67% com frutos carnosos indeiscentes, seguidas por espécies anemocóricas (17,95% com frutos deiscentes, além de espécies autocóricas (15,38%. A vegetação estudada apresentou recursos variados aos animais frugívoros e dispersores de sementes, mas em função da sazonalidade climática da região e do predomínio das plantas, as espécies anemocóricas ganham uma maior importância como vetor de transporte de sementes.

  5. 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.

  6. 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.

  7. 老年患者医院感染产ESBLs及AmpC酶肺炎克雷伯菌检测及耐药性分析%Detection of ESBLs-and AmpC-producing Klebsiella pneumoniae causing nosocomial infections in eldely hospitalized patients and analysis of drug resistance

    Institute of Scientific and Technical Information of China (English)

    郑素君

    2013-01-01

    OBJECTIVE To understand the status of ESBLs- and AmpC-producing Klebsiella pneumoniae causing nosocomial infections in the elderly hospitalized patients so as to guide the clinical medication. METHODS The case-control study was conducted for the elderly hospitalized patients in 2011, and the ESBLs- and AmpC-producing K. pneumoniae isolated from various clinical specimens were collected, then the detection rate and the drug resistance were analyzed. RESULTS There were totally 97 strains of K. pneumoniae isolated from various specimens obtained from the elderly hospitalized patients, among which there were 29 (29. 9%) strains of ESBLs-producing isolates and 16 (16. 5%) strains of AmpC-producing isolates, and there were 8 (8. 3%) strains of ESBLs- and AmpC-producing isolates. The drug susceptibility testing result indicated that the enzyme-producing and non-anzyme-producing strains were 100% sensitive to imipenem and were highly resistant to the rest of the beta-lactam antibacterials cephalosporins, the drug resistance rate of the enzyme-producing strains was higher than that of the non-enzyme-producing strains,and the drug resistance rate of the ESBLs- and AmpC-producing stains was higher than that of the ESBLs-producing or AmpC-producing strains. CONCLUSION The detection rates of the ESBLs-producing K. pneumoniae and the AmpC-producing K. pneumoniae as well as the ESBLs-and AmpC-producing strains are high,and the enzyme-producing strains are multidrug-resistant.%目的 了解老年住院患者在医院感染肺炎克雷伯菌产ESBLs及AmpC酶的情况,为临床用药提供参考.方法 对2011年高龄住院患者进行病例剖析,整理出各类标本中分离的肺炎克雷伯菌单产ESBLs、AmpC酶和同产ESBLs及AmpC酶菌株的检出率及耐药性.结果 从老年住院患者各类标本中共分离到肺炎克雷伯菌97株,单产ESBLs 29株,占29.9%,单产AmpC酶16株,占16.5%,同产ESBLs及AmpC酶8株,占8.3%;产酶与非产酶菌株除对亚胺培南敏感率100.0%外,对其余(p-)内酰胺类抗菌药物头孢菌素类呈高度耐药,产酶菌株耐药率高于非产酶菌株,同产ESBLs及AmpC酶菌株耐药率要高于单产ESBLs和AmpC酶菌株.结论 老年住院患者感染的肺炎克雷伯菌单产ESBLs、AmpC酶及同产ESBLs及AmpC酶菌株检出率较高,并且产酶菌株对多种抗菌药物呈耐药状态.

  8. 安徽省老年人潜在不适当用药的风险调查及相关因素分析%The investigation and analysis on related factors of the risk of potentially inappropriate medication in the eld-erly

    Institute of Scientific and Technical Information of China (English)

    沈国栋; 王璐; 刘卉卉; 徐佳慧; 林明政; 沈干; 胡世莲

    2015-01-01

    Objective To investigate the health risk of potentially inappropriate medication (PIM)for the elderly and effectively implement drug safety risk management,and provide research foundation for better protection of the health rights of the elderly.Methods The representative eight urban and rural communities in Anhui province were investigated and analyzed based on the Beers criteria.Survey data were analyzed using SPSS and Epidata soft-wares to understand the differences of elderly PIM prevalence on the distribution and influencing factors.Results The inappropriately used drugs by general elderly population had scores of types and high frequency of inappropriately using,among which the inappropriately used frequencies of top 10 drugs were more than 30%.There were statistically significant differences on the inappropriately using frequencies of drugs for cold,bacterial infection,hypertension and coronary heart disease in the elderly between rural and urban areas (P <0.05),in which the inappropriately using frequency of anti-cold medicines by the elderly in the rural community was lower than that in urban communities,but the inappropriately using of other drugs had significantly higher frequencies than in urban communities.Whilst,PIM prevalence of the elderly with strong awareness of security risk,well-educated and high household income was signifi-cantly lower than that of less-educated and low income elderly in the same community.Conclusion The risk for po-tentially inappropriately using of drug is common for the elderly in some areas of Anhui province.%目的了解老年人潜在不适当用药(PIM)带来的健康风险,为有效实施老年人用药安全的风险管理与保护老年人的健康权益提供依据。方法采用分级抽样方法选择了安徽省8个代表性的城乡社区,用基于 Beers 准则设计的问卷进行实地调查。调查获得的数据用 Epidata 和 SPSS 软件进行分析。结果抽样地区的老年人群总体不适当使用药物种类较多,频率较高,排在前10名的药物不适当使用频率均高于30%。城乡地区老年人在治疗感冒、抗细菌性感染、防治高血压与冠心病等药物的不适当使用频率的差异在统计学上有意义(P <0.05),其中农村社区老年人群在治疗感冒药物方面的不适当使用频率比城市社区低,而其他药物的不适当使用频率明显比城市社区高。在同一社区,受教育程度与家庭收入较高的老年人用药安全风险意识往往强些,其 PIM流行率也明显低于受教育程度与家庭收入较低的老年人。结论安徽省部分地区老年人不适当的用药情况较为普遍,老年人用药安全风险意识较低。

  9. 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 .

  10. 全程干预对提高社区中老年人口腔健康知信行的研究%Study of the whole process intervention to improve the oral health knowledge, attitude, and behavior among the community’s eldly people

    Institute of Scientific and Technical Information of China (English)

    徐先国

    2012-01-01

      Objective: To evaluate the full course intervention for the elderly in the knowledge, attitude, practice (KAP) of community oral health and provide a basis for seeking an effective model suitable for the community to carry out the oral health care. Method: Subjects used for KAP survey of oral health within the jurisdiction of the elderly aged 45 and above were divided into either experimental or control groups. Results for full oral health intervention in the experimental group and the routine oral health education in control group were evaluated after two years. Result: The KAP of oral health were improved significantly better in experimental group than in the control group, there are significant differences in contrast between two groups(P<0.01). Conclusion: These interventions can not only improve the elderly oral KAP, but also promote oral health.%  目的:评价全程干预对社区中老年人口腔保健知识、信念、行为的影响,为寻求有效的、适于社区开展的口腔保健模式提供依据.方法:采用分层等容量随机抽样方法选取辖区内45岁及以上中老年人进行口腔健康知、信、行调查,研究对象分为实验组和对照组,对实验组提供全程口腔健康干预措施,对照组实施常规口腔健康教育,2年后评估.结果:实验组口腔健康知识、信念、行为提高明显优于对照组,两者对比差异有统计学意义(P <0.01).结论:社区全程式口腔健康干预对提高中老年人口腔知、信、行具有较好作用,社区全程、便捷、可及的口腔干预有利于提高中老年人口腔健康知、信、行,促进口腔健康.

  11. 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)).

  12. 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.

  13. 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.

  14. 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

  15. Simple and low-cost fabrication of a metal nanoplug on various substrates by electroless deposition*

    Institute of Scientific and Technical Information of China (English)

    Cheng Kaifang; Yang Fuhua; Wang Xiaofeng; Wang Xiaodong; Zhang Jiayong; Ma Huili; Chen Xiaogang; Liu Bo; Song Zhitang; Feng Songlin

    2011-01-01

    An electroless deposition (ELD) method is introduced to fabricate a metal nanoplug for its advantages of simplicity, low cost and auto-selectivity. It was demonstrated that nanoplugs of less than 50 nm in diameter can be fabricated by ELD nickel on various substrates, such as silicon, tungsten and titanium nitride. The main composition of the ELD nanoplug was characterized as nickel by an energy dispersive X-ray microanalyzer. A functional vertical phase-change random access memory (PCRAM) device with a heater diameter of around 9μm was fabricated by using the ELD method. The Ⅰ-Ⅴ characteristics demonstrated that the threshold current is only 90.8 μA. This showed that the ELD process can satisfy the demands of PCRAM device application, as well as device performance improvement. The ELD process provides a promising method for the simple and low-cost fabrication of metal nanoplugs.

  16. 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.

  17. The Origin and Structure of the Magnetic Fields and Currents of AGN Jets

    Directory of Open Access Journals (Sweden)

    Denise Gabuzda

    2017-02-01

    Full Text Available This paper reviews observational evidence obtained to date about the overall structure of the magnetic fields in the jets of Active Galactic Nuclei (AGN. Because they are sensitive to the line-of-sight magnetic-field component, Faraday rotation observations of AGN jets provide an effective tool for searching for toroidal jet magnetic fields, whose line-of-sight component changes systematically across the jet. Transverse Faraday rotation measure (RM gradients providing direct evidence for helical/toroidal magnetic fields have been reliably detected in nearly 40 AGN on parsec scales. Helical magnetic fields are believed to form due to the combined action of the rotation of the central black hole and accretion disk, and these observations demonstrate that at least some of this helical field survives to distances well beyond the Very Long Baseline Interferometry (VLBI core. Observations of reversals in the direction of the transverse RM gradients in a number of AGN provide evidence for a“return”magnetic field forming a nested helical-field structure with oppositely directed azimuthal components in the inner and outer regions of the helical magnetic field. The collected data now provide firm evidence for a predominance of inward jet currents on parsec scales and outward currents on scales greater than a few tens of parsecs. This suggests a global pattern of magnetic fields and currents with an inward current near the jet axis and an outward current farther from the jet axis, with these currents closing in the accretion disk and far out in the radio lobes, forming a self-consistent set of fields and currents together with the implied nested helical-field structure.

  18. On dynamo action in the giant star Pollux : first results

    CERN Document Server

    Palacios, A

    2013-01-01

    We present preliminary results of a 3D MHD simulation of the convective envelope of the giant star Pollux for which the rotation period and the magnetic ?eld intensity have been measured from spectroscopic and spectropolarimetric observations. This giant is one of the ?rst single giants with a detected magnetic ?eld, and the one with the weakest ?eld so far. Our aim is to understand the development and the action of the dynamo in its extended convective envelope.

  19. 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.

  20. 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.

  1. 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...

  2. 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......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...

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

    DEFF Research Database (Denmark)

    Cassidy, Andrew; Plekan, Oksana; Balog, Richard

    2014-01-01

    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...... 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...

  4. 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.

  5. 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.

  6. Eldecalcitol prevents endothelial dysfunction in postmenopausal osteoporosis model rats.

    Science.gov (United States)

    Serizawa, Kenichi; Yogo, Kenji; Tashiro, Yoshihito; Takeda, Satoshi; Kawasaki, Ryohei; Aizawa, Ken; Endo, Koichi

    2016-02-01

    Postmenopausal women have high incidence of cardiovascular events as estrogen deficiency can cause endothelial dysfunction. Vitamin D is reported to be beneficial on endothelial function, but it remains controversial whether vitamin D is effective for endothelial dysfunction under the treatment for osteoporosis in postmenopausal women. The aim of this study was to evaluate the endothelial protective effect of eldecalcitol (ELD) in ovariectomized (OVX) rats. ELD (20  ng/kg) was orally administrated five times a week for 4 weeks from 1 day after surgery. After that, flow-mediated dilation (FMD) as an indicator of endothelial function was measured by high-resolution ultrasound in the femoral artery of living rats. ELD ameliorated the reduction of FMD in OVX rats. ELD inhibited the increase in NOX4, nitrotyrosine, and p65 and the decrease in dimer/monomer ratio of nitric oxide synthase in OVX rat femoral arteries. ELD also prevented the decrease in peroxisome proliferator-activated receptor gamma (PPARγ) in femoral arteries and cultured endothelial cells. Although PPARγ is known to inhibit osteoblastogenesis, ELD understandably increased bone mineral density of OVX rats without increase in PPARγ in bone marrow. These results suggest that ELD prevented the deterioration of endothelial function under condition of preventing bone loss in OVX rats. This endothelial protective effect of ELD might be exerted through improvement of endothelial nitric oxide synthase uncoupling, which is mediated by an antioxidative effect through normalization of vascular PPARγ/NF-κB signaling.

  7. 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...

  8.  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....

  9. 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.

  10. 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.

  11. 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...

  12. 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.

  13. 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…

  14. 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.

  15. The Triple Helix of the Organizational Knowledge

    Directory of Open Access Journals (Sweden)

    Contantin BRĂTIANU

    2013-09-01

    Full Text Available The purpose of this paper is to present the inner triple helix dynamics of the organizationalknowledge. This is a new perspective of the classical view of tacit knowledge– explicit knowledge dyad of the organizational knowledge promoted by Nonaka and hisco-workers. The new perspective is based on the metaphor that organizational knowledge isa "eld rather than a stock, or stocks and flows. It is a complex metaphor using the thermodynamicsprinciples. The organizational knowledge is composed of three different "elds: cognitiveknowledge, emotional knowledge and spiritual knowledge. These "elds are nonuniform,nonhomogeneous and they interact in a dynamic way. Cognitive "eld contains knowledgeabout what is, emotional "eld contains knowledge about how we feel, and the spiritual "eldcontains knowledge about people’s aspirations and life values. This new perspective opens anew opportunity in understanding the challenges for the 21st century management.

  16. 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.

  17. 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

  18. 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......, pragmatic data will tell authors and translators how textual resources are conventionally used and what is textually appropriate in communication within the fi eld of economics. The focus will mainly be on translations between Danish and English....

  19. 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

  20. 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

  1. 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

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

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    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.

  3. 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

  4. Mental Foramenin Lokalizasyonun Radyografik Olarak Değerlendirilmesi

    Directory of Open Access Journals (Sweden)

    M Isa Kara

    2011-01-01

    Full Text Available Amaç: Mental foramenin yerinin tam olarak lokalize edilmesi alt çeneye uygulanan cerrahi operasyonlar açısından kritik bir öneme sahiptir. Lokalizasyonunun çeşitliliği özellikle implant cerrahisi gibi bazı operasyonlar sırasında komplikasyona sebep olabilir. Bu çalışmanın amacı Sivas ilindeki hastalardan elde edilen dijital panoramik röntgenleri değerlendirerek, mental foramenin lokalizasyonunu araştırmaktır. Gereç ve yöntem: Bu çalışmada, 360 hastanın dijital panoramik röntgeni retrospektif olarak incelenmiştir. Panoramik röntgenlerde, mental foramenin farklı lokalizasyonları cinsiyet ayrımı gözeterek, simetrik ve asimetrik olarak değerlendirilmiştir. Ayrıca mental foramenin alveoler kret tepesine ve alt çene alt kenarına olan ortalama uzaklıkları incelenmiştir. Bulgular: Mental foramen hastaların % 59,4’ünde birinci ve ikinci küçük az

  5. 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

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

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    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.

  7. 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

  8. Equatorial Layered Deposits in Arabia Terra, Mars: Facies and Process Variability

    Science.gov (United States)

    Pondrelli, M.; Rossi, A.; van Gasselt, S.; Le Deit, L.; Glamoclija, M.; Cavalazzi, B.; Franchi, F.; Fueten, F.; Hauber, E.; Zegers, T.

    2012-12-01

    Genetic mechanisms proposed to explain Equatorial Layered Deposits (ELDs) formation include subglacial volcanism, aeolian/airfall, lacustrine, lacustrine/volcanic and spring-fed deposition. ELDs have been frequently shown to consist of sulfates (e.g. Gendrin et al., 2005) that might form as a response to evaporation in a playa environment (Hoefen et al., 2003) or during spring precipitation (e.g. Allen and Oehler, 2008; Rossi et al., 2008). The importance of groundwater-dominated hydrological systems was proposed to explain the formation of light-toned deposits in Meridiani Planum and Arabia Terra (e.g. Andrews-Hanna et al. 2007). Additionally, fluid expulsion processes have been invoked to explain the formation of mounds within the light-toned deposits in Arabia Terra (Allen and Oehler, 2008; Rossi et al., 2008; Pondrelli et al., 2011). Potential for habitable conditions of both playa and spring-related settings (Cavalazzi et al., 2007; Glamoclija et al., 2011) coupled with the high preservation potential within sulfates (Panieri et al., 2010), make these deposits a good candidate to understand the potential past habitability of the planet. In order to investigate ELDs genesis, an area in the vicinity of Firsoff crater, where ELDs are present within and outside the craters, was selected for geological mapping and analysis of the landforms and their association using the available dataset, including CRISM in order to infer ELDs composition. Within Firsoff crater, ELDs form a bulge that can be estimated to be at least a few hundred meters thick, while, outside the craters, ELDs form flat-lying deposits. Although heavily eroded by wind and carved by yardangs, several morphologies within the ELDs in the craters seem to be depositional, which would exclude that the entire Firsoff basin had been originally filled by ELDs. Within craters, ELDs consist of roughly meter thick layers draping and onlapping the substratum. They appear affected by polygonal patterns with no

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

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    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.

  10. Klatskin tümörü olgusunda biliyer metalik Y-Stent uygulaması

    OpenAIRE

    ÖNDER, F. Oğuz; DİŞİBEYAZ, Selçuk; Parlak, Erkan; ÖDEMİŞ, Bülent; Şaşmaz, Nurgül

    2015-01-01

    Sağ ve sol safra kanallarını bileşke düzeyinde tutan kolanjiokanserlere Klatskin Tümör'ü adı verilmektedir. Bu hastalarda metal stentler ile bilateral olarak safra yollarının drene edilmesi, operable olmayan hastalarda en iyi palyasyonu sağlamaktadır. Ancak hastalığın tutulum şekli nedeni ile intrahepatik safra yolları dilate iken, ekstrahepatik safra yolları normal kalibrasyonda olmaktadır, ve yan yana iki metaklik stent yerleştirilmesine uygun olmayabilmektedir. Bu durumdaki bir hastad...

  11. Attitude toward euthanasia scale: psychometric properties and relations with religious orientation, personality, and life satisfaction.

    Science.gov (United States)

    Aghababaei, Naser; Wasserman, Jason Adam

    2013-12-01

    End-of-life decisions (ELDs) represent a controversial subject, with ethical dilemmas and empirical ambiguities that stand at the intersection of ethics and medicine. In a non-Western population, we examined individual differences in perceiving ELDs that end the life of a patient as acceptable and found that an attitude toward euthanasia (ATE) scale consists of 2 factors representing voluntary and nonvoluntary euthanasia. Also, acceptance of ELDs that end the life of a patient negatively correlated with life satisfaction, honesty-humility, conscientiousness, and intrinsic and extrinsic personal motivation toward religion. These findings provided additional construct validity of the ATE scale.

  12. 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.

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

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    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

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

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    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

  15. 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.

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

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    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.

  17. Analysis of the third field trial

    OpenAIRE

    Alabau, Vicent; Carl, Michael; Martínez, García, G.; González-Rubio, Jesús; Mesa-Lao, Bartolomé; Ortiz-Martínez, Daniel; Rodrigues,Sofia; Schaeffer, Moritz

    2014-01-01

    In this work package, we evaluate the CasMaCat workbench in eld trials to study the use of the workbench in a real-world environment. We have also integrated the workbench into community translation platforms and collected user activity data from both eld trials and volunteer translators interacting with the workbench. This Deliverable covers Task 6.1 and 6.2. Task 6.1: Third eld trial at a translation agency (Celer Soluciones SL in Madrid) to evaluate the CasMaCat work...

  18. Analysis of the second Field trial

    OpenAIRE

    Iglesias, Eva Marcos; Pellegrino, Massimiliano; Carl, Michael; García-Martínez, Mercedes; Mesa-Lao, Bartolomé; Underwood, Nancy

    2014-01-01

    In this work package, we evaluate the CasMaCat workbench in eld trials to study the use of the workbench in a real-world environment. We will also integrate the workbench into com- munity translation platforms and collect user activity data from both eld trials and volunteer translators. This Deliverable covers Tasks 6.1 and 6.2. Task 6.1: Three eld trials at a translation agency (Celer Soluciones SL)to evaluate the CasMaCat workbench in a real-world professional translat...

  19. Numerical modeling of parallel-plate based AMR

    DEFF Research Database (Denmark)

    In this work we present an improved 2-dimensional numerical model of a parallel-plate based AMR. The model includes heat transfer in fluid and magnetocaloric domains respectively. The domains are coupled via inner thermal boundaries. The MCE is modeled either as an instantaneous change between high...... and low field or as a magnetic field profile including the actual physical movement of the regenerator block in and out of field, i.e. as a source term in the thermal equation for the magnetocaloric material (MCM). The model is further developed to include parasitic thermal losses throughout the bed...

  20. Complex Magnetic Systems Studied with Neutron Scattering

    DEFF Research Database (Denmark)

    Jacobsen, Henrik

    analytically and compared with neutron scattering experiments on 8 nm and 16 nm particles, validating the theory and determining the magnitude of the anisotropy constants. In addition, the temperature dependence of the excitations and of the superparamagnetism are explored using numerical simulations. Through...... dynamics of GAG as function of applied magnetic eld were measured using inelastic neutron scattering. The data showed the existence of a low energy mode in zero eld, similar to what was discovered in GGG earlier. An applied magnetic eld was found to sharpen the excitations, nally inducing a gap when...

  1. 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.

  2. 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

  3. Analysis of the first field trial

    OpenAIRE

    Mesa-Lao, Bartolomé; Carl, Michael

    2014-01-01

    In this work package, we evaluate the CASMACAT workbench in eld trials to study the use of the workbench in a real-world environment. We will also integrate the workbench into com- munity translation platforms and collect user activity data from both eld trials and volunteer translators. This Deliverable covers Tasks 6.1 and 6.2. Task 6.1: Field trials at translation agency. Three annual eld trials to evaluate the CASMACAT workbench in a real-world professional translatio...

  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. 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.

  6. 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.

  7. 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.

  8. Dicty_cDB: AFN801 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available eld-collected Valencia Sweet Orange (Citrus sinensis (L.) Osbeck) Citrus sinensis...s from field-collected Valencia Sweet Orange (Citrus sinensis (L.) Osbeck) Citrus sinensis cDNA clone MVF-82

  9. Dicty_cDB: AFO779 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available eld-collected Valencia Sweet Orange (Citrus sinensis (L.) Osbeck) Citrus sinensis...s from field-collected Valencia Sweet Orange (Citrus sinensis (L.) Osbeck) Citrus sinensis cDNA clone MVF-82

  10. Dicty_cDB: AFO346 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available cted Valencia Sweet Orange (Citrus sinensis (L.) Osbeck) Citrus sinensis cDNA clo...eld-collected Valencia Sweet Orange (Citrus sinensis (L.) Osbeck) Citrus sinensis cDNA clone MVF-82_F01 5',

  11. 78 FR 15757 - Joint Industry Plan; Notice of Filing of the Third Amendment to the National Market System Plan...

    Science.gov (United States)

    2013-03-12

    ... ETF. CYB WisdomTree Dreyfus Chinese Yuan Fund. DBA PowerShares DB Agriculture Fund. DBB PowerShares DB... MSCI EAFE. EIDO iSHARES MSCI Indonesia Investable Market Index Fund. ELD WisdomTree Emerging...

  12. 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.

  13. Investigation of the surface resistance of superconducting materials

    CERN Document Server

    Junginger, T

    2012-01-01

    In particle accelerators superconducting RF cavities are widely used to achieve high accelerating gradients and low losses. Power consumption is proportional to the surface resistance RS which depends on a number of external parameters, including frequency, temperature, magnetic and electric eld. Presently, there is no widely accepted model describing the increase of Rs with applied eld. In the frame of this project the 400MHz Quadrupole Resonator has been extended to 800 and 1200MHz to study surface resistance and intrinsic critical RF magnetic eld of superconducting samples over a wide parameter range, establishing it as a world-wide unique test facility for superconducting materials. Dierent samples were studied and it was shown that RS is mainly caused by the RF electric eld in the case of strongly oxidized surfaces. This can be explained by interface tunnel exchange of electrons between the superconductor and localized states in adjacent oxides. For well prepared surfaces, however, the majority of the di...

  14. A New Hybrid Shuffled Frog Leaping Algorithm to Solve Non-convex Economic Load Dispatch Problem

    Directory of Open Access Journals (Sweden)

    Ehsan Bijami

    2011-11-01

    Full Text Available This paper presents a New Hybrid Shuffled Frog Leaping (NHSFL algorithm applied to solve Economic Load Dispatch (ELD problem. Practical ELD has non-convex cost function and various equality and inequality constraints that convert the ELD problem as a nonlinear, non-convex and non-smooth optimization problem. In this paper, a new frog leaping rule is proposed to improve the local exploration and the performance of the conventional SFL algorithm. Also a genetic mutation operator is used for the creation of new frogs instead of random frog creation that improves the convergence. To show the efficiency of the proposed approach, the non-convex ELD problem is solved using conventional SFL and an improved SFL method proposed by other researchers. Then the results of SFL methods are compared to the results obtained by the proposed NHSFL algorithm. Simulation studies show that the results obtained by NHSFL are more effective and better compared with these algorithms.

  15. 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.

  16. 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 $J_C$.

  17. A high-order finite-difference linear seakeeping solver tool for calculation of added resistance in waves

    DEFF Research Database (Denmark)

    Amini Afshar, Mostafa; Bingham, Harry B.; Read, Robert

    During recent years a computational strategy has been developed at the Technical University of Denmark for numerical simulation of water wave problems based on the high-order nite-dierence method, [2],[4]. These methods exhibit a linear scaling of the computational eort as the number of grid points...... on both near-eld and far-eld methods. The solver has been written inside a C++ library known as Overture [3], which can be used to solve partial dierential equations on overlapping grids based on the high-order nite-dierence method. The resulting code is able to solve, in the time domain, the linearised...... potential ow forward-speed hydrodynamic problems; namely the steady, radiation and diraction problems. The near-eld formulation of the wave drift force has also been implemented, and development is under way to include far-eld methods. This paper presents validation results based on analytical solutions...

  18. 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’.

  19. 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.

  20. 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.

  1. 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.

  2. 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.

  3. 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....

  4. 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.

  5. 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.

  6. Where is the Theoretical Basis for Understanding and Measuring the Environment for Physical Activity?

    OpenAIRE

    Nelson, N. M.; Wright, A; Lowry, R.G.; Mutrie, N.

    2008-01-01

    Researchers are beginning to explore environmental correlates to further the fi eld of physical activity research. Before interventions and experimental investigations can be undertaken, it is necessary to identify specific environmental features that are consistent correlates of physical activity. There has been a plethora of research measuring such cross-sectional associations since this fi eld came to the fore in 2003. This paper posits that it is time for researchers to evaluate the state...

  7. 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.

  8. 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.

  9. 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.\

  10. Eldecalcitol improves mechanical strength of cortical bones by stimulating the periosteal bone formation in the senescence-accelerated SAM/P6 mice - a comparison with alfacalcidol.

    Science.gov (United States)

    Shiraishi, Ayako; Sakai, Sadaoki; Saito, Hitoshi; Takahashi, Fumiaki

    2014-10-01

    Eldecalcitol (ELD), a 2β-hydroxypropyloxy derivative of 1α,25(OH)2D3, is a potent inhibitor of bone resorption that has demonstrated a greater effect at reducing the risk of fracture in osteoporotic patients than alfacalcidol (ALF). In the present study, we used the senescence-accelerated mouse strain P6 (SAM/P6), which has low bone mass caused by osteoblast dysfunction, to evaluate the effect of ELD on cortical bone in comparison with ALF. Four-month-old SAM/P6 mice were given either ELD (0.025 or 0.05μg/kg) or ALF (0.2 or 0.4μg/kg) by oral gavage 5 times/week for 6 weeks. Both ELD and ALF increased serum calcium (Ca) in a dose-dependent manner. Serum Ca levels in the ELD 0.05μg/kg group were comparable to those of the ALF 0.2μg/kg group. ELD 0.05μg/kg significantly improved the bone biomechanical properties of the femur compared with the vehicle control group (pBone histomorphometry revealed that in the femoral endocortical surface, the suppression of bone resorption parameters (N.Oc/BS) and bone formation parameters (MS/BS) by ELD (0.05μg/kg) was greater than that by ALF (0.2μg/kg). In contrast, in the femoral periosteal surface, ELD 0.05μg/kg significantly increased bone formation parameters (BFR/BS, MS/BS) compared with the vehicle control group (pbone not only by inhibiting endocortical bone resorption but also by stimulating the periosteal bone formation in SAM/P6 mice. This article is part of a Special Issue entitled '16th Vitamin D Workshop'.

  11. 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.

  12. 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 $_{c}$.

  13. 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 ...

  14. 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.

  15. 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.

  16. 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.

  17. 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.

  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. 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.

  20. 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.

  1. 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.

  2. Lactococcus Lactis Suşlarında Ekzopolisakkarit Üretiminin Faj Dirençlilik ile İlişkisi

    OpenAIRE

    KOÇER, Ela; TÜKEL, Çağla; Akçelik, Mustafa

    2003-01-01

    Türkiye kökenli 90 Lactococcus lactis suşunun 25 laktik faja karşı test edilmesi sonucu, 7 adet susun tüm fajlara karşı tam direnç gösterdiği belirlendi. Yedi suştan altı adedi ekzopolisakkarit üretme yeteneğinde bulundu. Bu suşlardan 4 adedinin kapsüler, 2 adedinin ise hücre duvarı ile gevşek ilişkili ekzopolisakkaritler ürettiği saptandı. Tüm ekzopotisakkarit üreten L. lactis suşlarında, faj dirençlilik fenotipinin faj adsorbsiyonunun engellenmesi suretiyle oluşturulduğu tespit edildi....

  3. GAZ ABSORPSİYONUNDA KULLANILABİLİR SCHIFF BAZI-METAL KOMPLEKSLERİNİN KUARTZ KRİSTAL MEMBRAN SENSÖRÜ OLARAK GELİŞTİRİLMESİ

    OpenAIRE

    NAZIR, Hasan

    1990-01-01

    Bu çalışmada, gravimetrik sensör uygulamalarından biri olan Kuartz Kristal Mikrobalans (QCM; Quartz Crystal Microbalance) sisteminin elle taşınabilir, pille de çalışabilen ve bilgisayar ile kontrol edilebilir küçük bir modülünün geliştirilmesi, sentezlenecek Schiff bazı-metal kompleksleriyle de sistemin gaz fazında çalışmasının test edilmesi amaçlanmıştır. QCM sistemi temel olarak üç ana parçadan oluşmaktadır; Frekansmetre, kristal ösilatör ve SiO2 kristali. Yapılan çalışmada, PIC (Peripheral...

  4. TRABZON AND UKRAINE

    OpenAIRE

    2005-01-01

    Makale, Ukraynalıların Trabzon ile olan tarihsel bağları ile ilgilidir. Orta Çağın yanı sıra Birinci Dünya Savaşı sırasında Rusya’nın Trabzon’u işgal ettiği dönemden de bahsedilmiştir. Özellikle Rusya Bilimler Akademisi tarafından Trabzon’daki kültürel ve tarihi anıtların tespit edilmesi ve korunması için hazırlanan komisyonun üç Ukraynalı şarkiyatçısı olan F. Schmit, F. Krymsky ve M. Makarenko

  5. Yoğun bakım hastalarında plevral ve parankimal akciğer patolojilerini tanımlamada yatak başı yapılan akciğer ultrasonografisinin yeri

    OpenAIRE

    Yilmaz, Özgür

    2011-01-01

    GİRİŞ: Günümüz yoğun bakım pratiğinde hızlı ve doğru teşhis koymak amacı ile daha az mobilizasyon gerektiren, hasta için non-invaziv ve yan etkisi az olan tekniklerin tercih edilmesi eğilimi, yatak başı ultrasonografiye olan ilginin giderek artmasına neden olmuştur.Biz bu çalışma ile pnömoni ve/veya plevral effüzyon şüphesi olan kritik has...

  6. Pragmatist ve post-Marksist demokratik siyaset anlayışları: Rorty ve Laclau-Mouffe örneği

    OpenAIRE

    KUNDAKÇI, Deniz

    2014-01-01

    Bu tez çalışmasının başlıca hedefi, Rorty ile Laclau ve Mouffe özelinde pragmatizm ve post-Marksizm gibi iki farklı yaklaşımın çağdaş felsefi sorun ve politik tartışmalar etrafında mukayese edilmesi ve mevcut ilişkilerinin ortaya konulmasıdır. Bu bağlamda tezin birinci bölümünde öncelikle Charles Peirce, William James ve John Dewey gibi pragmatist kuramın kurucularının fikirleri hakkında genel bir manzara çizilmektedir. Bu doğrultuda pragmatizmin felsefesi ve onun demokra...

  7. Ağır metal içeren atık sulardan izole edilecek bakteriler ile Cr (VI) biyoremediasyonu

    OpenAIRE

    ERGÜL ÜLGER, Zeynep

    2016-01-01

    Krom giderimi için genelde kullanılan yöntemler doğal ortamların temizlenmesi için uygun değildir ve bu alanlardaki kirletici etmenlerin giderimi için tasarlanmış özel yöntemlere günümüzde yüksek bir ihtiyaç bulunmaktadır. Bu tez çalışmasında, ağır metal içeren atık sulardan Cr (VI)’ ya dayanıklı bakterilerin izole edile edilmesi ve heksavalen kromu, canlılar için daha az zararlı olan trivalen kroma indirebilen bakteri türlerinin araştırılması konu alınmaktadır. Krom ile kontamine al...

  8. Non-Standard Hierarchies of the Runnings of the Spectral Index in Inflation

    Directory of Open Access Journals (Sweden)

    Chris Longden

    2017-03-01

    Full Text Available Recent analyses of cosmic microwave background surveys have revealed hints that there may be a non-trivial running of the running of the spectral index. If future experiments were to confirm these hints, it would prove a powerful discriminator of inflationary models, ruling out simple single field models. We discuss how isocurvature perturbations in multi-field models can be invoked to generate large runnings in a non-standard hierarchy, and find that a minimal model capable of practically realising this would be a two-field model with a non-canonical kinetic structure. We also consider alternative scenarios such as variable speed-of-light models and canonical quantum gravity effects and their implications for runnings of the spectral index.

  9. 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!

  10. 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.

  11. High I on/I off current ratio graphene field effect transistor: the role of line defect.

    Science.gov (United States)

    Tajarrod, Mohammad Hadi; Saghai, Hassan Rasooli

    2015-01-01

    The present paper casts light upon the performance of an armchair graphene nanoribbon (AGNR) field effect transistor in the presence of one-dimensional topological defects. The defects containing 5-8-5 sp(2)-hybridized carbon rings were placed in a perfect graphene sheet. The atomic scale behavior of the transistor was investigated in the non-equilibrium Green's function (NEGF) and tight-binding Hamiltonian frameworks. AGNRFET basic terms such as the on/off current, transconductance and subthreshold swing were investigated along with the extended line defect (ELD). The results indicated that the presence of ELDs had a significant effect on the parameters of the GNRFET. Compared to conventional transistors, the increase of the I on/I off ratio in graphene transistors with ELDs enhances their applicability in digital devices.

  12. QCD at finite temperature and density on the lattice

    Directory of Open Access Journals (Sweden)

    Lombardo M.-P.

    2010-10-01

    Full Text Available In the first lecture we briefly summarize the basics of field theory thermodynamics and critical phenomena. We then introduce the lattice gauge field theory approach to QCD at finite temperature and density, which is a non-perturbative scheme allowing first principle calculations using the QCD Lagrangian as a sole input. Some of the general concepts and idea introduced at the beginning are demonstrated by use of simple effective models of QCD. The second lecture is devoted to applications. We emphasize that current methods suffice to study the main phenomena at RHIC and LHC energies, and we discuss the ongoing theoretical efforts devoted to the solution of the sign problem which hampers the simulations of cold and dense matter. We conclude with short overview of the status of the field as of Summer 2008.

  13. 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...

  14. 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.

  15. 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...

  16. 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.

  17. Artificial bee colony algorithm for economic load dispatch with wind power energy

    Directory of Open Access Journals (Sweden)

    Safari Amin

    2016-01-01

    Full Text Available This paper presents an efficient Artificial Bee Colony (ABC algorithm for solving large scale economic load dispatch (ELD problems in power networks. To realize the ELD, the valve-point loading effect, system load demand, power losses, ramp rate limits and prohibited operation zones are considered here. Simulations were performed on four different power systems with 3, 6, 15 and 40 generating units and the results are compared with two forms of power systems, one power system is with a wind power generator and other power system is without a wind power generator. The results of this study reveal that the proposed approach is able to find appreciable ELD solutions than those of previous algorithms.

  18. 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.

  19. 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.)

  20. 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.

    1. 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.

    2. 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.

    3. 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.

    4. 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.

    5. 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.

    6. 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.

    7. Regional magnetic anomalyfi elds:3D Taylor polynomial and surface spline models

      Institute of Scientific and Technical Information of China (English)

      Feng Yan; Jiang Yong; Jiang Yi; Li Zheng; Jiang Jin; Liu Zhong-Wei; Ye Mei-Chen; Wang Hong-Sheng; Li Xiu-Ming

      2016-01-01

      We used data from 1960.0, 1970.0, 1980.0, 1990.0, and 2000.0 to study the geomagnetic anomalyfi eld over the Chinese mainland by using the three-dimensional Taylor polynomial (3DTP) and the surface spline (SS) models. To obtain the pure anomalyfi eld, the mainfi eld and the inducedfi eld of the ionospheric and magnetosphericfi elds were removed from measured data. We also compared the SS model anomalies and the data obtained with Kriging interpolation (KI). The geomagnetic anomaly distribution over the mainland was analyzed based on the SS and 3DTP models by transferring all points from 1960.0−1990.0 to 2000.0. The results suggest that the total intensity F anomalies estimated based on the SS and KI for each year are basically consistent in distribution and intensity. The anomalous distributions in the X-, Y-, and Z-direction and F are mainly negative. The 3DTP model anomalies suggest that the intensity in the X-direction increases from−100 nT to 0 nT with longitude, whereas the intensity in the Y-direction decreases from 400 nT to 20 nT with longitude and over the eastern mainland is almost negative. The intensity in the Z-direction and F are very similar and in most areas it is about−50nT and higher in western Tibet. The SS model anomalies overall refl ect the actual distribution of the magneticfi eld anomalies; however, because of the uneven distribution of measurements, it yields several big anomalies. Owing to the added altitude term, the 3DTP model offers higher precision and is consistent with KI.

    8. 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.

    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. 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.

    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. 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.

    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. 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.

    15. 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.

    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. 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).

    18. The Possible Interstellar Anion CH2CN-: Spectroscopic Constants, Vibrational Frequencies, and Other Considerations

      Science.gov (United States)

      Fortenberry, Ryan C.; Crawford, T. Daniel; Lee, Timothy J.

      2012-01-01

      The A 1B1 anion (CH2CN??) has been hypothesized as the carrier for one di use interstellar band. However, this particular molecular system has not been detected in the interstellar medium even though the related cyanomethyl radical and the isoelectronic ketenimine molecule have been found. In this study we are employing the use of proven quartic force elds and second-order vibrational perturbation theory to compute accurate spectroscopic constants and fundamental vibrational frequencies for X 1A0 CH2CN?? in order to assist in laboratory studies and astronomical observations. Keywords: Astrochemistry, ISM: molecular anions, Quartic force elds, Rotational constants, Vibrational frequencies

    19. 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.

    20. 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.

    1. 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...

    2. 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...

    3. 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.

    4. Surface Flow from Visual Cues

      OpenAIRE

      Petit, Benjamin,; Letouzey, Antoine; Boyer, Edmond; Franco, Jean-Sébastien

      2011-01-01

      International audience; In this paper we study the estimation of dense, instantaneous 3D motion fields over a non-rigidly moving surface observed by multi-camera systems. The motivation arises from multi-camera applications that require motion information, for arbitrary subjects, in order to perform tasks such as surface tracking or segmentation. To this aim, we present a novel framework that allows to efficiently compute dense 3D displacement fields using low level visual cues and geometric con...

    5. 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.

    6. 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.

    7. MAGNETIC FIELDS AND THE POLARIZATION OF ASTROPHYSICAL MASER RADIATION: A REVIEW

      Directory of Open Access Journals (Sweden)

      W. D. Watson

      2009-01-01

      Full Text Available Basic aspects of the relationship between the magnetic eld and polarized maser radiation are described with the emphasis on interpreting the observed spectra. Special attention is given to three issues { the limitations on the applicability of the classic solutions of Goldreich, Keeley, & Kwan (1973, inferring the strength of the magnetic eld from the circular polarization when the Zeeman splitting is much less than the spectral linebreadth (especially for SiO masers, and the signi cance of the absence of components of the Zeeman triplet in the spectra of OH masers in regions of star formation.

    8. Geotechnical Factors in the Dredgeability of Sediments. Report 1. Geotechnical Descriptors for Sediments to be Dredged

      Science.gov (United States)

      1993-11-01

      relatively plane sides with unpolished surfaces. Subangular Particles are similar to angular description but have rounded edges. Subrounded Particles have...34eld ~~ ul5*11 arpe emile- qal 1*lt y %~ fibrou wet feel (1) dw 3 c, lasettleet1@lm 2151. aoeasmlmas mlallasosu at tooW owes am154b lm~i- t gem ofpv

    9. Spatially resolved measurements of the magnetocaloric effect and the local magnetic field using thermography

      DEFF Research Database (Denmark)

      Christensen, Dennis; Bjørk, Rasmus; Nielsen, Kaspar Kirstein

      2010-01-01

      The magnetocaloric effect causes a magnetic material to change temperature upon application of a magnetic field. Here, spatially resolved measurements of the adiabatic temperature change are performed on a plate of gadolinium using thermography. The adiabatic temperature change is used to extract...

    10. Eulerian method for super-cooled large-droplet ice-accretion on aircraft wings

      NARCIS (Netherlands)

      Hospers, J.M.

      2013-01-01

      Many research has been done to provide scientists and aviation engineers with tools to predict ice accretions on in ight aircraft. The ice accretion problem is often sudden, its eects can be dramatic, leading to aircraft accidents with possible loss of lives. Until now this eld has been relatively s

    11. 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.

    12. QTL Information Table: 796 [Q-TARO

      Lifescience Database Archive (English)

      Full Text Available h, H., Eun, M.-Y., and McCouch, S.R. (2007). Identification of Quantitative Trait Loci in Rice for Yield, Yi...eld Components, and Agronomic Traits across Years and Locations. Crop Sci. 47, 2403-2417. http://crop.scijournals.org/cgi/content/abstract/47/6/2403 ...

    13. THE SCHOOL OF ECOLOGICAL CHEMISTRY FOUNDED BY ACADEMICIAN GHEORGHE DUCA

      Directory of Open Access Journals (Sweden)

      Tudor Lupascu

      2009-06-01

      Full Text Available This review details the most important achievements in the fi eld of ecological chemistry and environmental protection, obtained at the State University of Moldova and Institute of Chemistry of the Academy of Sciences of Moldova. The main research directions are described, as well as main scientific laboratories and centres of these two institutions.

    14. 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)

      Rest, van de 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

    15. Observer based Model Identification of Heat Pumps in a Smart Grid

      DEFF Research Database (Denmark)

      Andersen, Palle; Pedersen, Tom S.; Nielsen, Kirsten M.

      2012-01-01

      The extensive growth of installed wind energy plants in Denmark leads to increasing balancing problems in the power grid due to the nature of wind fields and variations in consumption. One way to overcome these problems is to move consumption to times where wind power otherwise cause overproduction...

    16. Fire Control Methodology for an Accelerating Target

      Science.gov (United States)

      1980-04-01

      elde It nmcmmmmry mnd Identify by block number) ensor errors 8 Accelerating target Smoothing technique Launch prediction scheme Gun lead angle...P*GE(Whmt Dmtm Entered) SECURITY CLASSIFICATION OF THIS PAGEfWhen Dmtm Enlmrmd) ACKNOWLEDGMENT The authors wish to thank Messrs. James Bevelock

    17. 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...

    18. 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.

    19. 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...

    20. Exploring Early Reading Instructional Strategies to Advance the Print Literacy Development of Adolescent SLIFE

      Science.gov (United States)

      Montero, M. Kristiina; Newmaster, Sharon; Ledger, Stephanie

      2014-01-01

      The research presented in this article examines the English language and print literacy development of adolescent refugee students with limited and interrupted formal education (SLIFE) aged 14 to 21. The aim of this research was to determine if and how teaching early reading strategies to secondary ESL/ELD teachers could improve students'…

    1. 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…

    2. 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

    3. 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

    4. Diverse methane concentrations in anoxic brines and underlying sediments, eastern Mediterranean Sea

      Digital Repository Service at National Institute of Oceanography (India)

      Karisiddaiah, S.M.

      *Bannock Basin (CTD 1 and LC 16), U*Urania Basin (CTD 2, LC 17); #*ODP Leg 160 (Site 970, 971) locations; a, b, c and d are"elds of mud diapirs. (a) Prometheus, (b)Pan di Zuchheri, (c)Prometheus and (d) Olimpi (its position is similar to ODP position); IP * Inner...

    5. Provisions for the Elderly in North-Western Europe: Almshouses around the North Sea, Sixteenth-Twentieth Centuries

      NARCIS (Netherlands)

      2014-01-01

      In Early Modern north-western Europe a unique form of charitable foundation developed – almshouses. These were inhabited by elderly men and women, who had led honourable middle-class lives, but had become unable to support themselves. In towns that were rapidly growing through immigration, many elde

    6. Provisions for the elderly in northwestern Europe: an international comparison of almshouses, sixteenth–twentieth centuries

      NARCIS (Netherlands)

      Leeuwen, van M.H.D.; Nederveen Meerkerk, van E.J.V.; Heerma van Voss, L.

      2014-01-01

      In Early Modern north-western Europe a unique form of charitable foundation developed – almshouses. These were inhabited by elderly men and women, who had led honourable middle-class lives, but had become unable to support themselves. In towns that were rapidly growing through immigration, many elde

    7. 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.

    8. 2007 Army Modernization Plan

      Science.gov (United States)

      2007-03-01

      leaders grounded in leadership and fi eld cra , regardless of branch, who embody the Army Values and the Warrior Ethos and who are physically and...Survivability: “ Shoot and scoot” tactics; improved ballistic and NBC protection • Responsive fi res: Capable of fi ring within 45 seconds from a

    9. Konstantin Kossatshov : Dialoga s etim pravitelstvom ne budjet / Konstantin Kossatshov ; interv. Jana Litvinova

      Index Scriptorium Estoniae

      Kossatshov, Konstantin

      2007-01-01

      Venemaa Riigiduuma väliskomisjoni esimees rääkis Eesti ja Venemaa suhetest, öeldes et riikide suhete paranemine Andrus Ansipi juhitava valitsuse ajal pole ilmselt võimalik ja suhete halva seisu eest lasub vastutus Eesti valitsusel ning kritiseeris aprillisündmusi seoses pronkssõduri teisaldamisega, samuti suhtumist venekeelsesse elanikkonda

    10. 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.

    11. Virulence of Pectobacterium carotovorum subsp. brasiliense on potato compared with that of other Pectobacterium and Dickeya species under climatic conditions prevailing in the Netherlands

      NARCIS (Netherlands)

      Wolf, van der J.M.; Haan, de E.G.; Kastelein, P.; Krijger, M.C.; Haas, de B.H.; Velvis, H.; Mendes, O.; Kooman-Gersmann, M.; Zouwen, van der P.S.

      2016-01-01

      In western Europe, Pectobacterium carotovorum subsp. brasiliense is emerging as a causal agent of blackleg disease. In field experiments in the Netherlands, the virulence of this pathogen was compared with strains of other Dickeya and
      Pectobacterium species. In 2013 and 2014, seed potato tubers w

    12. 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...

    13. 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.

    14. 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.

    15. 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

    16. 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...

    17. Is a Separate Block of Time for Oral English Language Development in Programs for English Learners Needed?

      Science.gov (United States)

      Saunders, William M.; Foorman, Barbara R.; Carlson, Coleen D.

      2006-01-01

      The issue of whether to separate English language development (ELD) into a separate instructional block or whether to integrate it with reading/language arts instruction is an unanswered question with theoretical and practical implications. We addressed this question by observing instruction across the year in 85 kindergarten classrooms that…

    18. Attitudes of Flemish secondary school students towards euthanasia and other end-of-life decisions in minors

      NARCIS (Netherlands)

      Pousset, G.; Bilsen, J.J.; Wilde, de J.; Deliens, L.H.J.; Mortier, F.

      2009-01-01

      BACKGROUND: The aim of the study was to investigate attitudes of secondary school students towards acceptability of requests by minors for end-of-life decisions (ELDs) with a possible life-shortening effect: non-treatment decisions, potentially life-shortening alleviation of pain and symptoms (APS)

    19. 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.

    20. 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.

    1. 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.

    2. 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.

    3. 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

    4. 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.

    5. Ontogeny and pharmacogenetics: determinants of age-associated differences in drug clearance during human development

      NARCIS (Netherlands)

      G.L. Kearns (Greg)

      2002-01-01

      textabstractDevelopment per se represents a continuum of biologic events that enable adaptation, somatic growth and eventually, reproduction. From a societal, psychosocial, behavioral and medical perspective, it is generally appreciated that infants and children are far different from adults and eld

    6. 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.

    7. Programmable Input for Nanomagnetic Logic Devices

      Directory of Open Access Journals (Sweden)

      Schmitt-Landsiedel D.

      2013-01-01

      Full Text Available A programmable magnetic input, based on the magnetic interaction of a soft and hard magnetic layer is presented for the first time. Therefore, a single-domain Co/Pt nanomagnet is placed on top of one end of a permalloy bar, separated by a thin dielectric layer. The permalloy bar of the introduced input structure is magnetized by weak easy-axis in-plane fields. Acting like a ’magnetic amplifier’, the generated fringing fields of the permalloy pole are strong enough to control the magnetization of the superimposed Co/Pt nanomagnets, which have high crystalline perpendicular magnetic anisotropy. This magnetostatic interaction results in a shift of the hysteresis curve of the Co/Pt nanomagnet, measured by magneto-optical Kerr microscopy. The Co/Pt nanomagnet is fixed by the fringing field of the permalloy and thereby not affected by the magnetic power clock of the Nanomagnetic Logic system. MFM measurements verify the functionality of the programmable magnetic input structure. The fringing fields are extracted from micromagnetic simulations and are in good agreement with experimental results. The introduced input structure enables switching the logic functionality of the majority gate from NAND to NOR during runtime, offering programmable Nanomagnetic Logic.

    8. 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

    9. 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

    10. 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.

    11. 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

    12. On averaging methods for partial differential equations

      NARCIS (Netherlands)

      Verhulst, F.

      2001-01-01

      The analysis of weakly nonlinear partial differential equations both qualitatively and quantitatively is emerging as an exciting eld of investigation In this report we consider specic results related to averaging but we do not aim at completeness The sections and contain important material which

    13. A Bloch modal approach for engineering waveguide and cavity modes in two-dimensional photonic crystals

      DEFF Research Database (Denmark)

      de Lasson, Jakob Rosenkrantz; Kristensen, Philip Trøst; Mørk, Jesper;

      2014-01-01

      uses no external excitation and determines the quasi-normal modes as unity eigenvalues of the cavity roundtrip matrix. We demonstrate the method and the quasi-normal modes for two types of two-dimensional photonic crystal structures, and discuss the quasi-normal mode eld distributions and Q...

    14. 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.

    15. THE EFFECT OF SEED SPROUTING DAMAGE ON FIELD EMERGENCE AND YIELD OF SPRING TRITICALE

      Directory of Open Access Journals (Sweden)

      Maria MOŚ

      2005-04-01

      Full Text Available In the years 1999-2001 two-factor fi eld experiments were carried out in which the effects of spring triticale seed sprouting damage on fi eld emergence, elements of the structure of yield and the yield were investigated. The research covered three cultivars: Gabo, Migo and Wanad. The statistical analysis of the results showed signifi cant effects of years and sprouting damage on fi eld emergence in all the years. Consequently, these factors affected the number of spikes per unit area, weight of 1,000 seeds and the yield in the years which were unfavourable for emergence (1999, 2000. In those years the decrease in yield, in the case of seeds with the most severe sprouting damage, ranged from 29% to 65% as compared with the control. In the favourable year 2001, in spite of a signifi cant effect of seed sprouting damage on fi eld emergence, the emergence level was so high that no decrease in the investigated elements of the structure of yield and the yield was observed.

    16. 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.

    17. 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...

    18. 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.

    19. 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

    20. 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.

    1. Teachers' Discourses on Teaching Students of Elementary School English Literacy Development in Ontario

      Science.gov (United States)

      Brubacher, Katherine

      2013-01-01

      This article explores teachers' discourses on teaching English Literacy Development (ELD) students in mainstream elementary school classrooms through an examination of their philosophies of teaching and reflections on literacy. The findings are based on empirical qualitative data collected from interviews with two English-as-a-second language…

    2. SOME APPROACHES TO THE REPRESENTATION OF REALITY FOR SOLVING PROBLEMS OF SPECIALISTS’ EDUCATION IN MODERN EDUCATIONAL ENVIRONMENT

      OpenAIRE

      Svetlana V. Zenkina; Vasilij M. Trembach

      2014-01-01

      Article represents the features of modern educational environment for training specialists in the fi eld of aerospace robotics. Training requirements of modern specialists are pointed. Approaches to the description of the subject areas of onboard intelligent systems are demonstrated. Implementation variations of these approaches are shown in the architecture of an intelligent system and in the demo example of planning system. 

    3. QTL Information Table: 405 [Q-TARO

      Lifescience Database Archive (English)

      Full Text Available pl1.1 Morphological trait Panicle/flower Panicle length RFLP C)Interval BC2F2 Jeffe... M.E., Lobos, K.B., Xu, Y., Martinez, C.P., and McCouch, S.R. (2003). Mapping quantitative trait loci for yi...eld, yield components and morphological traits in an advanced backcross populatio

    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. 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

    6. 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

    7. 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

    8. Hybrid graphene-BC2N monolayers and nanoribbons with extended line defects: An ab initio study

      Science.gov (United States)

      Guerra, T.; Azevedo, S.; Machado, M.

      2017-02-01

      Opening a bandgap in graphene is probably one of the most important and urgent topics in the graphene research currently, since most of the proposed applications for graphene in nanoelectronic devices require the ability to adjust its bandgap. In this work we perform first-principles calculations to investigate the alterations at the structural, energetic, electronic and magnetic properties of hybrid graphene-BC2N monolayers (GBMLs) and zigzag graphene-BC2N nanoribbons (ZGBNRs) with different types of extended line defects (ELDs) at the grain boundary. Different reconstruction processes are observed forming different types of ELDs depending on the nature of the atoms into the grain boundary as well as the structures type, arrangement, position/size of domains, and inserted atoms. The inclusion of these ELDs creates edge type effects in the ELD at GBNMLs, inducing spin polarization and localization of states at the Fermi level. GBNMLs show a wide range of electronic structures going from semimetallic to semiconducting and metallic, which can have magnetic ground states with ferromagnetic and antiferromagnetic. ZGBNRs are always metallic with ferromagnetic coupling between carbon atoms at the structures edges.

    9. 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.

    10. 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…

    11. 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

    12. 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

    13. 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

    14. Symptom Complaints Following Combat-Related Traumatic Brain Injury: Relationship to Traumatic Brain Injury Severity and Posttraumatic Stress Disorder

      Science.gov (United States)

      2009-08-01

      being less competent (Sawchyn, Mateer, & Suffi eld, 2005 ). Mild TBI has also been associated with greater emotional distress ( Leininger , Kreutzer...brain injury . Brain Injury , 23 , 83 – 91 . Leininger , B.E. , Kreutzer , J.S. , & Hill , M.R . ( 1991 ). Comparison of minor and severe

    15. 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.

    16. The Comparison of Oral Language Acquisition for Grade 1-3 in Taiwan and America

      Science.gov (United States)

      Wu, Min-Ping; Hsieh, Sheng-Wen

      2008-01-01

      This study focused on the English language teaching methodologies used by a small number of the ELD teachers in Fullerton school district in the United States and EFL teachers in ABC school in Taiwan. The instruments, interview, observation and field notes, were used to gather the evidences of useful oral language teaching methodologies. Results…

    17. CONCEPTUAL STRUCTURALLOGIC DIAGRAM PRODUCTION AUTOMATION EXPERT STUDY ON THE ISSUE OF CORRECTNESS OF CALCULATION OF THE TAX ON PROFIT OF ORGANIZATIONS

      Directory of Open Access Journals (Sweden)

      Andrey N. Ishchenko

      2014-01-01

      Full Text Available In this article the possibility of automation of an expert study on the questionof correctness of tax calculation profi t organization. Considered are the problemsof formalization of the expert research inthis field, specify the structure of imprisonment. The author proposes a conceptual structural-logic diagram automation expertresearch in this area.

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

      Science.gov (United States)

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

      2012-01-01

      Background/Context: Arizona's most recent English Language Learner (ELL) legislation, starting in the school year 2008-2009, requires all such students be educated through a specific Structured English Immersion (SEI) model: the 4-hour English Language Development (ELD) block. The basic premise behind this particular model is that ELL students…

    19. Nurses' attitudes towards end-of-life decisions in medical practice: a nationwide study in Flanders, Belgium.

      Science.gov (United States)

      Inghelbrecht, E; Bilsen, J; Mortier, F; Deliens, L

      2009-10-01

      We investigated on a nationwide level the attitudes of nurses towards end-of-life decisions (ELDs) that may hasten death and towards their role in those decisions. We took a representative random sample of 6000 nurses in Flanders, Belgium. Response rate was 62.5%. Most nurses agreed with the practice of withholding/withdrawing potentially life-prolonging treatments (93%), with decisions to alleviate symptoms with possible life-shortening side effects (96%) and with the practice of euthanasia (92%). Their support for the different decisions existed regardless of whether they had cared for terminally ill patients or not. Most nurses also thought that they have an important role to play especially in the ELD-making process. Nurses' views on their proper role in the administration of drugs in euthanasia and continuous deep sedation showed a large dispersal. Overall, nurses' work setting determines their opinions on nurses' role in ELDs. In conclusion, nurses accept a wide variety of ELDs being practiced with terminally ill patients.

    20. 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...

    1. 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

    2. 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.

    3. 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

    4. Public Sector Leadership. A Review of Romanian Research Done in the Field Between 2007-2016

      Directory of Open Access Journals (Sweden)

      Tudor ȚICLĂU

      2016-12-01

      Full Text Available Leadership is one of the best examples for an ubiquitous research topic, as it is studied both as a social phenomenon as well as a theoretical concept (Hackman and Wageman, 2007, being studied in relation with different research fi elds, ranging from politics, public administration, management, social and organizational change, human motivation (and the list could go on. This has led some scholars to claiming that leadership has been the source of more extensive investigation than almost any other aspect of human behavior (de Vries, 1993. The interest then in public sector leadership comes only natural to any researcher in the fi eld of public administration. Our main purpose was to identify and analyze what has been done on the topic of public sector leadership, specifi cally for Romania, in the past ten years. We focused on three major variables: theoretical framework used, authorship nationality, and quality of research. Results indicate that Romanian authors and Romania are missing from top tier journals in the fi eld of public administration. Indirectly, results raise questions about general research capacity in the fi eld of public administration of Romanian scholars.

    5. 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...

    6. On the Kamke-Muller conditions, monotonicity and continuity for bi-modal piecewise-smooth systems

      OpenAIRE

      O'Donoghue, Yoann; Mason, Oliver; Middleton, Rick

      2012-01-01

      We show that the Kamke-Muller conditions for bimodal piecewise-smooth systems are equivalent to simple conditions on the vector elds dening the system. As a consequence, we show that for a specic class of such systems, monotonicity is equivalent to continuity. Furthermore, we apply our results to derive a stability condition for piecewise positive linear systems.

    7. Experimental investigation of re-entry aerodynamic phenomena - Development of non-intrusive flow diagnostics in a Ludwieg tube

      NARCIS (Netherlands)

      Schrijer, F.F.J.

      2010-01-01

      To further improve the design of hypersonic vehicles so that fully reusable systems become a reality, the detailed understanding of the flow field that the vehicle generates is of paramount importance. The thesis deals with the aspects of experimental flow research which includes also the flow facility

    8. 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%.

    9. 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

    10. 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.

    11. 基于混合智能算法的电力系统经济负荷分配%Economic Load Dispatch of Power System Based on Hybrid Intelligent Algorithm

      Institute of Scientific and Technical Information of China (English)

      周广闯; 陈璟华; 郭壮志; 潘帅; 刘春香

      2014-01-01

      为解决复杂、不连续、不可导、非线性的电力系统经济负荷分配(economic load dispatch,ELD)问题,提出粒子群算法(particle swarm optimization,PSO)结合单纯形算法(simplex method,NM)的混合智能算法(simplex method-particle swarm optimization,NMPSO)。利用NMPSO解决ELD问题时,综合考虑了发电机组的阀点效应和系统网损,使ELD更接近实际情况,充分利用 PSO 随机性的全局寻优能力和 NM快速确定性的局部寻优能力,弥补了 PSO和NM分别单独应用时的不足。仿真结果表明,NMPSO应用于 ELD 问题,具有较好的优化效果。%For solving problem of economic load dispatch of complex,discontinuous,unguided and nonlinear power system,a kind of hybrid intelligent algorithm combining particle swarm optimization and simplex method was proposed.When using NMPSO to solve ELD problem,valve point effect and system transmission losses of the generator unit were comprehensively considered which made ELD more closely approximate to physical truth.By fully using global optimization of PSO random and partial optimization of NM rapid certainty,it was able to make up shortages of independent PSO and NM.Simulation results indicated that application of NMPSO in ELD was of better optimization effect.

    12. 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.

    13. 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.

    14. 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.

    15. The Rise and Effect of Virtual Modalities and Functions on Organizational Leadership: Tracing Conceptual Boundaries Along the E-Management and E-Leadership Continuum

      Directory of Open Access Journals (Sweden)

      Montgomery VAN WART

      2016-12-01

      Full Text Available The massive shift to virtual modalities and functions has changed the context of leadership and organizational structures, and thus how leadership is exercised. To date, the fi elds of e-leadership and e-management, or more generally, virtual leadership, have been unable to make much progress. This exploratory study uses adaptive structuration theory, an approach recommended by Avolio (2001 and 2014, to provide a broad framework that is modifi ed for the fi eld. It uses the multi-method, multi-level approach recommended by structuration theory. Findings regarding three specifi c advanced information technologies (AITs are discussed, study limitations are provided, and future research opportunities are reviewed.

    16. Time-resolved terahertz spectroscopy of semiconductor nanostructures

      DEFF Research Database (Denmark)

      Porte, Henrik

      of the photoconductivity is observed, due the release of carriers from the quantum dots into the conducting barrier states. Secondly, the carrier dynamics in InGaN/GaN quantum wells subject to a built-in piezoelectric eld is described. An initial fast decay of the photoconductivity as the piezoelectric eld is screened......This thesis describes time-resolved terahertz spectroscopy measurements on various semiconductor nanostructures. The aim is to study the carrier dynamics in these nanostructures on a picosecond timescale. In a typical experiment carriers are excited with a visible or near-infrared pulse...... and by measuring the transmission of a terahertz probe pulse, the photoconductivity of the excited sample can be obtained. By changing the relative arrival time at the sample between the pump and the probe pulse, the photoconductivity dynamics can be studied on a picosecond timescale. The rst studied semiconductor...

    17. Kritik Altı Su Ekstraksiyonu İşleminin Gıda Endüstrisinde Kullanımına Yönelik Uygulamalar

      OpenAIRE

      Kanmaz, Evrim Özkaynak; Ova, Gülden

      2014-01-01

      Kritik altı su ekstraksiyonu işleminde kullanılan sıcaklığa bağlı olarak çeşitli polaritedeki bileşikleri elde etmek mümkün olup daha düşük sıcaklıklarda polaritesi yüksek bileşikler, daha yüksek sıcaklıklarda ise polaritesi düşük bileşikler ekstrakte elde edilebilmektedir. Kritik altı su ekstraksiyonu doğal gıda bileşenlerinin ekstraksiyonu amacıyla toksik organik bileşiklerin kullanılmadığı çevre dostu bir tekniktir. Bu teknik ayrıca daha düşük ekstraksiyon süresi, daha yüksek kaliteli ekst...

    18. 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).

    19. 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.

    20. 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

      In wind farms, individual turbines disturb the wind field by generating wakes that influence other turbines in the farm. From a control point of view, there is an interest in dynamic optimization of the balance between fatigue and production, and an understanding of the relationship between turbines...... 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...... 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...

    1. Partnership for practice change and knowledge development

      DEFF Research Database (Denmark)

      Larsen, Stina Meyer; Stokholm, Gitte; Madsen, Anette Judithe

      2014-01-01

      Objective. This article presents and evaluates the results of an educational initiative at the occupational therapy programme at University College Lillebaelt in Denmark. The objectives of the initiative were (A) to establish institutional partnerships between the educational institution...... with occupational therapists in the practice fi eld and with citizens, and later drafted written reports and communicated their results Concurrent with this, they received special education and counselling from teaching staff. Results. The initiative was evaluated by analysing focus group interviews, questionnaires....... Conclusions. On top of what students learned through the initiative, all of this was to the bene fi t of the university college, the occupational therapy program, and the practice fi elds and citizens. The results point toward a continuation of the educational initiative. Key words: theory – practice relation...

    2. 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.

    3. 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.

    4. 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.)

    5. Modified Cuckoo Search Algorithm for Solving Nonconvex Economic Load Dispatch Problems

      Directory of Open Access Journals (Sweden)

      Thang Trung Nguyen

      2016-01-01

      Full Text Available This paper presents the application of modified cuckoo search algorithm (MCSA for solving economic load dispatch (ELD problems. The MCSA method is developed to improve the search ability and solution quality of the conventional CSA method. In the MCSA, the evaluation of eggs has divided the initial eggs into two groups, the top egg group with good quality and the abandoned group with worse quality. Moreover, the value of the updated step size in MCSA is adapted as generating a new solution for the abandoned group and the top group via the Levy flights so that a large zone is searched at the beginning and a local zone is foraged as the maximum number of iterations is nearly reached. The MCSA method has been tested on different systems with different characteristics of thermal units and constraints. The result comparison with other methods in the literature has indicated that the MCSA method can be a powerful method for solving the ELD.

    6. 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.

    7. The Current State of Silicone-Based Dielectric Elastomer Transducers

      DEFF Research Database (Denmark)

      Madsen, Frederikke Bahrt; Daugaard, Anders Egede; Hvilsted, Søren;

      2016-01-01

      driving voltages. In this review, the current state of sili- cone elastomers for DETs is summarised and critically discussed, including commercial elastomers, composites, polymer blends, grafted elastomers and complex network structures. For future developments in the field it is essential that all aspects...... class of transducer due to their inherent lightweight and potentially large strains. For the field to progress towards industrial implementation, a leap in material devel- opment is required, specifically targeting longer lifetime and higher energy densities to provide more efficient transduction at lower...... of the elastomer are taken into account, namely dielectric losses, life- time and the very often ignored polymer network integrity and stability....

    8. Optimisation-Based Solution Methods for Set Partitioning Models

      DEFF Research Database (Denmark)

      Rasmussen, Matias Sevel

      The scheduling of crew, i.e. the construction of work schedules for crew members, is often not a trivial task, but a complex puzzle. The task is complicated by rules, restrictions, and preferences. Therefore, manual solutions as well as solutions from standard software packages are not always su......_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...

    9. Final Technical Report for DOE DE-FG02-05ER54831 "Laboratory Studies of Dynamos."

      Energy Technology Data Exchange (ETDEWEB)

      Forest, Cary B. [Univ. of Wisconsin, Madison, WI (United States)

      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

    10. 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.

    11. 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.

    12. Meyve ve sebze lif konsantreleri ilavesinin hamurun reolojik özellikleri ve bisküvi kalitesine etkileri

      OpenAIRE

      2011-01-01

         Çalışmada; elma, kayısı, portakal, limon, greyfurt, havuç ve balkabağı gibi meyve ve sebzelerden elde edilen lif konsantreleri, iki farklı buğday çeşidinden elde edilen unlara (Gerek-79 ve Guadalupe), değişik oranlarda (% 0, 10, 15, 20 ve 25) katılarak  bunların hamur reolojik özellikleri ile bisküvi kalitesine etkileri araştırılmıştır.

         Araştırmada kullanılan lif konsantrelerinden sebze lif konsantrelerinin...

    13. 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.

    14. 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.

    15. 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.

    16. 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.

    17. 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。

    18. 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.

    19. 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...

    20. DÜNYADA YA? GÜLÜ VE GÜL YA?I ÜRETYMY

      OpenAIRE

      Timor, Ayşe Nur

      2011-01-01

      Dünyada uçucu ya?lara duyulan ihtiyaç giderek artmaktadyr. Gül ya?y, parfüm ve kozmetik endüstrisinin temel hammaddelerinden biri olarak, bu tür ya?lar içinde önemli bir yere sahiptir. Ya? elde etmek amacyyla yeti?tirilen ve ekonomik de?ere sahip olan en önemli gül türü "ya? gülü" olarak da bilinen Rosa damascena Mill.'dir. Bu kokulu gül türünün ve elde edilen gül ya?ynyn dünyadaki en büyük üreticisi Türkiye'dir. Türkiye dünya gül ya?y üretiminin yakla?yk % 70'ini kar?ylamak...

    1. DÜNYADA YA? GÜLÜ VE GÜL YA?I ÜRETYMY

      OpenAIRE

      Timor, Ayşe Nur

      2014-01-01

      Dünyada uçucu ya?lara duyulan ihtiyaç giderek artmaktadyr. Gül ya?y, parfüm ve kozmetik endüstrisinin temel hammaddelerinden biri olarak, bu tür ya?lar içinde önemli bir yere sahiptir. Ya? elde etmek amacyyla yeti?tirilen ve ekonomik de?ere sahip olan en önemli gül türü "ya? gülü" olarak da bilinen Rosa damascena Mill.'dir. Bu kokulu gül türünün ve elde edilen gül ya?ynyn dünyadaki en büyük üreticisi Türkiye'dir. Türkiye dünya gül ya?y üretiminin yakla?yk %...

    2. 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.

    3. 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.

    4. 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....

    5. 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.

    6. 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...

    7. 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.

    8. 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.

    9. 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.

    10. 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.

    11. 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.

    12. Is Space-Time Curved?

      Directory of Open Access Journals (Sweden)

      Prather B.

      2013-07-01

      Full Text Available This paper considers the possibility of a teleparallel approximation of general relativity where the underlying space-time of a compact massive source is related to the isotropic coordinate chart rather than the geometric chart. This results in a 20 percent reduction of the expected shadow radius of compact objects. The observation of the shadow radius of Sagittarius A* should be possible in the near future using VLBI. The theoretical reduction is within the uncertainty of the expected shadow radius, however any observation less than a critical radius would indicate that gravity is not the result of space-time curvature alone. If space-time curvature does not act alone it is simpler to adopt the teleparallel view, with the tetrad field representing the index of refraction of the required material field in a flat space-time.

    13. 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.

    14. Realizing Scientific Methods for Cyber Security

      Energy Technology Data Exchange (ETDEWEB)

      Carroll, Thomas E.; Manz, David O.; Edgar, Thomas W.; Greitzer, Frank L.

      2012-07-18

      There is little doubt among cyber security researchers about the lack of scientic rigor that underlies much of the liter-ature. The issues are manifold and are well documented. Further complicating the problem is insufficient scientic methods to address these issues. Cyber security melds man and machine: we inherit the challenges of computer science, sociology, psychology, and many other elds and create new ones where these elds interface. In this paper we detail a partial list of challenges imposed by rigorous science and survey how other sciences have tackled them, in the hope of applying a similar approach to cyber security science. This paper is by no means comprehensive: its purpose is to foster discussion in the community on how we can improve rigor in cyber security science.

    15. Mapeando o Inexistente: os estudos de recepção cinematográfica, por que não interessam à Universidade brasileira?

      Directory of Open Access Journals (Sweden)

      MASCARELLO, Fernando

      2005-12-01

      Full Text Available This paper discusses the theoretical and the political/institutional aspects which were considered responsible for the absolute marginalization of the interest in cinematic reception in film studies in Brazil, such as: 1the survival of Glauberianism as the theoretical and aesthetical canon; 2the absence of political-academic wish to dialogue with the international theoretical and methodological output - such as cultural studies and cognitivism - which, appearing in the 1980s, oppose, in the field of spectatorship, the modernist textualism typical of cinema studies in the 1970s; and 3 the hypertrophy and anticontextualism of the field of film analysis, preventing the look towards the actual spectator. At the end, as part of a movement of rupture with the present situation, the article presents ongoing research project, named “Discourses of the audience on Brazilian cinema”.

    16. 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.

    17. Infrared Thermography in Marine Applications

      OpenAIRE

      Pašagić, Vladimir; Mužević, Marijan; Kelenc, Dubravko

      2008-01-01

      Infrared (IR) thermography has become a powerful tool for basic and applied scientifi c research and for the application in various fi elds such as industry, environment, military and maritime affairs, etc. As a „predictive“ maintenance tool, IR thermography has the ability to identify problems before they occur. It is especially helpful for trouble shooting potential electrical overloads, worn or bad circuit breakers and buses. IR thermography can also be used to detect bad beari...

    18. 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.

    19. The role of star performers in software design teams

      OpenAIRE

      Volmer, Judith; Sonnentag, Sabine

      2011-01-01

      Purpose - This study seeks to extend previous research on experts with mainly ad-hoc groups from laboratory research to a field setting. Specifically, this study aims to investigate experts relative importance in team performance. Expertise is differentiated into two categories (task functions and team functions) and the paper aims to investigate whether experts in task and team functions predict team performance over and above the team s average expertise level.Design/methodology/approach - L...

    20. Economic Load Dispatch - A Comparative Study on Heuristic Optimization Techniques With an Improved Coordinated Aggregation-Based PSO

      DEFF Research Database (Denmark)

      Vlachogiannis, Ioannis (John); Lee, KY

      2009-01-01

      In this paper an improved coordinated aggregation-based particle swarm optimization (ICA-PSO) algorithm is introduced for solving the optimal economic load dispatch (ELD) problem in power systems. In the ICA-PSO algorithm each particle in the swarm retains a memory of its best position ever...... and the Hellenic bulk power system, and is compared with other state-of-the-art heuristic optimization techniques (HOTs), demonstrating improved performance over them....

    1. Entropy, Topological Theories and Emergent Quantum Mechanics

      Directory of Open Access Journals (Sweden)

      D. Cabrera

      2017-02-01

      Full Text Available The classical thermostatics of equilibrium processes is shown to possess a quantum mechanical dual theory with a finite dimensional Hilbert space of quantum states. Specifically, the kernel of a certain Hamiltonian operator becomes the Hilbert space of quasistatic quantum mechanics. The relation of thermostatics to topological field theory is also discussed in the context of the approach of the emergence of quantum theory, where the concept of entropy plays a key role.

    2. 教育に生きる落語の世界

      OpenAIRE

      桂, 花團治

      2016-01-01

      The present treatise intends to consider the methodology of Rakugo when it is applied to the fi eld of education. For the last 20 years, I have been giving lectures on Rakugo with practice lessons using a short story to elevate thinking power at various educational institutions.Most Rakugo punch lines (Ochi) are created by lateral thinking, and therefore they are often contrary to the expectation of most audiences. Such lateral thinking is a weak point to listeners in class. Lateral thinking ...

    3. 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

    4. NEW APPROACH IN DESIGN OF EDUCATION RESOURCES FOR THE MANAGERS IN NANOINDUSTRY

      OpenAIRE

      Tatyana A. Gavrilova; Margarita A. Gladkova

      2014-01-01

      The article deals withe the problems of designing education resources for the future managers in the fi eld of high and nano-tech. Modern high-tech companies are in need of highly qualifi ed managers who are capable of managing innovation projects and commercialize them. At present there exist extra curricular programmes whereas there are no special higher education programmes for specialists of this level. Authors of the article offer a new system approach to design education resources based...

    5. Experimental Methods in Psychology and Cognitive and Affective Neuroscience

      DEFF Research Database (Denmark)

      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 field of affective neuroscience have also received attention. Notwithstanding, experimental methods remain controversial also in psychology, and one should carefully weigh their advantages against their drawbacks....

    6. Theoretical tools for simulations of cluster dynamics in strong laser pulses

      CERN Document Server

      Palade, Dragos I

      2015-01-01

      The main theoretical tools used in the physics of cluster-laser interaction are discussed starting from the basic principles of Quantum Mechanics and ending with purely classical methods. The schematic overview of the theory is complemented by direct links with various types of phenomena, regimes of interaction and quantities to be studied. Finally, the theory is reflected in a wide range of numerical simulations in order to prove their validity and the work done in the fi?eld by the author.

    7. Saberes, conhecimentos e as pedagogias das perguntas e das respostas: atualidade de antigos conflitos

      OpenAIRE

      Silvio Sánchez Gamboa

      2009-01-01

      This article points out some essential issues related to how the teaching practices deal knowledge and knowledge historically accumulated by mankind. In the fi eld of education, the various forms of approaching this relation can be categorized into "teaching based on questions" and "teaching based on answers". To this end, the dialectic relation between questions and answers as the basis of knowledge production and knowledge appropriation is taken as the starting point. Some examples taken fr...

    8. Avoiding Communication in the Lanczos Bidiagonalization Routine and Associated Least Squares QR Solver

      Science.gov (United States)

      2015-04-12

      in terms of time and energy thus requires a dramatic shift in the eld of algorithmic design. Solvers for sparse linear algebra problems, ubiquitous...of time and energy thus requires a dramatic shift in the field of algorithmic design. Solvers for sparse linear algebra problems, ubiquitous...algorithm the matrix A must be read from slow memory (when it is too large to fit in cache, the most interesting case). Inner products involve a global

    9. 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.

    10. Maintenance Welding in Nuclear Power Plants/III, Conference Proceedings Held at Knoxville, Tennessee on 6-8 November 1985

      Science.gov (United States)

      1985-11-06

      austenitic stain- less steels having very high fracture toughness , so that ductile "collapse can be shown to preclude fracture . Some piping welds...were produced by a high-heat subarc process for which the %eld metal fracture toughness may not be high enough to be nonlimiting in every case. An...overlay NDE development and the earlier RPV clad work showed that clad surface roughness controls the quality of the - inspection. Smoothing and

    11. Maestría en seguridad Industrial mención en Prevención de Riesgos y Salud Ocupacional

      OpenAIRE

      Almeida Villena., Gerardo Ramiro

      2017-01-01

      Personal protective equipment (P.P.E.) for topography personnel now differs from normal work equipment; this is because topography personnel develop their full working day in the fíeld, with strong walks. For this reason, the personal protective equipment must be focused to give comfort to the worker in any weather or terrain. Prior to the application of this research, topography personnel rejected to use the standard construction equipment, they preferred to wear clothing that would allow mo...

    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. Pre-Colonial political centralization and contemporary development in Uganda

      OpenAIRE

      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...

    14. Numerical Simulation of Nanosecond-Pulse Electrical Discharges

      Science.gov (United States)

      2012-01-01

      were rst investigated.1,2 Activity in the research area waned in the 1970s, with some work on drag reduction using corona discharges appearing in...Aleksandrov et al.38 suggest that in nanosecond pulse discharges at atmospheric pressure at very high values of the reduced electric eld, E=N 1000 Td... atmospheric pressure is of the order of 100 m, which corresponds to an acoustic time of acoustic 0:3 s. Thus, nanosecond-pulse discharge energy

    15. Chapter 9: Oil and gas resource potential north of the Arctic Circle

      Science.gov (United States)

      Gautier, D.L.; Bird, K.J.; Charpentier, R.R.; Grantz, A.; Houseknecht, D.W.; Klett, T.R.; Moore, T.E.; Pitman, J.K.; Schenk, C.J.; Schuenemeyer, J.H.; Sorensen, K.; Tennyson, M.E.; Valin, Z.C.; Wandrey, C.J.

      2011-01-01

      The US Geological Survey recently assessed the potential for undiscovered conventional petroleumin the Arctic. Using a new map compilation of sedimentary elements, the area north of the Arctic Circle was subdivided into 70 assessment units, 48 of which were quantitatively assessed. The Circum-Arctic Resource Appraisal (CARA) was a geologically based, probabilistic study that relied mainly on burial history analysis and analogue modelling to estimate sizes and numbers of undiscovered oil and gas accumulations. The results of the CARA suggest the Arctic is gas-prone with an estimated 770-2990 trillion cubic feet of undiscovered conventional natural gas, most of which is in Russian territory. On an energy-equivalent basis, the quantity of natural gas ismore than three times the quantity of oil and the largest undiscovered gas eld is expected to be about 10 times the size of the largest undiscovered oil eld. In addition to gas, the gas accumulationsmay contain an estimated 39 billion barrels of liquids. The South Kara Sea is themost prospective gas assessment unit, but giant gas elds containingmore than 6 trillion cubic feet of recoverable gas are possible at a 50%chance in 10 assessment units. Sixty per cent of the estimated undiscovered oil resource is in just six assessment units, of which the Alaska Platform, with 31%of the resource, is the most prospective. Overall, the Arctic is estimated to contain between 44 and 157 billion barrels of recoverable oil. Billion barrel oil elds are possible at a 50%chance in seven assessment units.Undiscovered oil resources could be signicant to the Arctic nations, but are probably not sufcient to shift the world oil balance away from the Middle East. ?? 2011 The Geological Society of London.

    16. 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.

    17. Production Rate and Weapon System Cost: Research Review, Case Studies, and Planning Model.

      Science.gov (United States)

      1980-11-01

      number of diphones is now 2733. Generalized the phonetic synthesis program to allow the use of phonological rules combined with diphone templates...Projects Agency under ARPA Order No. 3515. 19. KEY WORoS (Continue on ,evere.s ide It n*.Ceew mid Identify by block number) Speech synthesis, phonetic ...real-time vocoder, mixed-source excitation model, adaptive lattice, phonetic vocoder, spectral template, 20. AU ,RAkCT (Conitinue On reverse eld* It

    18. Handbook of Oceanographic Winch, Wire, and Cable Technology.

      Science.gov (United States)

      1982-10-18

      man brak ocu ihnte iielnt poueithe sensor coil herthe orentlte ropue mover. 2 . significavoue ofane altraing mge ticnit eld, smta sinle...resin- catalyst blend should be pourable for a minimum of eight minutes at 60OF and should harden in fifteen minutes. Heating of the resin in the...screw type of level wind has a right- and left-hand thread blended together at the ends of the screw to form a turnaround area for a matching pawl (Figure

    19. Psychosocial Determinants of Chronic Stress in Nursing

      Science.gov (United States)

      1987-12-22

      and mental exhaustion ( Maslach , 1979; Pines & Aronson, 1980). Signs of physical exhaustion are chronic fatigue, weakness, and weariness. Accident...studies of nurses on the cumulative effects of dealing repeatedly with suffering and death of patients have not been done (Davidson & Jackson , 1985). It... Maslach , C. ~1979). The burn-out syndrome and patient care. In c. G~rf1eld (Ed.), Stress and survival (pp. 111-120). St. LOU1S! Mosby. Maslach , .c

    20. Second series of electric double locomotives for the North Scandinavian iron ore railway. Pt. 2. Field experience and project second series; Zweite Doppellokomotiv-Serie fuer die nordskandinavische Erzbahn. T. 2. Betriebserfahrung und Projektabwicklung

      Energy Technology Data Exchange (ETDEWEB)

      Zambo, Gabor [Bombardier Transportation Schweiz, Zuerich (Switzerland); Olovsson, Jan [LKAB, Kiruna (Sweden); Buchholz, Karl-Heinz [Bombardier Transportation, Kassel (Germany)

      2010-08-15

      Nine newly designed twelve axle electrical locomotives for hauling of 8.160 t iron ore trains have been delivered under a fi rst contract in a period till August 2004 to Kiruna, Sweden. After gaining experience on fi eld with subarctic conditions and as the further demand on iron ore in a world market raised in 2007 LKAB decided to call for tenders for further four double locomotives and optional up to three additional locomotives. (orig.)

    1. 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.

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

      OpenAIRE

      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 transport in mesoscopic and mi- croscopic systems by means of Green's function and mode-matching techniques. A general method has been developed for conductance calculations on the basis of the mod...

    3. Phosphors for flat panel emissive displays

      Energy Technology Data Exchange (ETDEWEB)

      Anderson, M.T.; Walko, R.J.; Phillips, M.L.F.

      1995-07-01

      An overview of emissive display technologies is presented. Display types briefly described include: cathode ray tubes (CRTs), field emission displays (FEDs), electroluminescent displays (ELDs), and plasma display panels (PDPs). The critical role of phosphors in further development of the latter three flat panel emissive display technologies is outlined. The need for stable, efficient red, green, and blue phosphors for RGB fall color displays is emphasized.

    4. CONCEPT OF STRUCTURAL ORGANIZATION INFORMATION SITUATIONAL CENTERS FOR OPERATIONAL MANAGEMENT MACHINEBUILDING DIVISION WITH A GEOGRAPHICALLY DISTRIBUTED PRODUCTION

      Directory of Open Access Journals (Sweden)

      Alexander V. Rechkalov

      2014-01-01

      Full Text Available The article considers the problem of organizing the planning system based on virtual manufacturing in constructingsituational center for engineering division. The analysis of foreign and domestic experience in the field of situational management, organization planning and managementsystems as virtual production in relation to the real (underlying production is provided. The scheme of organization situational center for engine-building enterprises of theEngineering Division is given.

    5. 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...

    6. 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.

    7. 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.

    8. Automated Dynamic Analysis of Ransomware: Benefits, Limitations and use for Detection

      OpenAIRE

      Sgandurra, Daniele; Muñoz-González, Luis; Mohsen, Rabih; Lupu, Emil C.

      2016-01-01

      Recent statistics show that in 2015 more than 140 millions new malware samples have been found. Among these, a large portion is due to ransomware, the class of malware whose specific goal is to render the victim's system unusable, in particular by encrypting important files, and then ask the user to pay a ransom to revert the damage. Several ransomware include sophisticated packing techniques, and are hence difficult to statically analyse. We present EldeRan, a machine learning approach for d...

    9. 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...

    10. 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...

    11. Biomimetics

      Indian Academy of Sciences (India)

      P Ramachandra Rao

      2003-06-01

      The well-organised multifunctional structures, systems and biogenic materials found in nature have attracted the interest of scientists working in many disciplines. The efforts have resulted in the development of a new and rapidly growing field of scientific effort called biomimetics. In this article we present a few natural materials and systems and explore how ideas from nature are being interpreted and modified to suit efforts aimed at designing better machines and synthesising newer materials.

    12. 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.

    13. COMPARISON OF EFFICACY OF PLAIN LIGNOCAINE WITH LIG NOCAINE AND CLONIDINE IN INTRAVENOUS REGIONAL ANAESTHESIA F OR UPPER LIMB SURGERY

      OpenAIRE

      Jyoti V; Rashmi; Suhas

      2013-01-01

      ABSTRACT : INTRODUCTION: IVRA is a simple, reliable, and effective technique with rapid onset of action, rapid and prompt recovery after tourn iquet release. It provides good analgesia, adequate muscle relaxation, & bloodless operative fi eld. It is widely applicable to patients of different ages and physical status for operations & c ost effective. Lignocaine though preferred local anesthetic agent has limitation of short dura tion of anesthesia & inabilit...

    14. 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.

    15. Rotating cylindrically symmetric Kaluza-Klein fluid model

      Indian Academy of Sciences (India)

      Ramesh Tikekar; L K Patel

      2000-09-01

      Kaluza-Klein field equations for stationary cylindrically symmetric fluid models in standard Einstein theory are formulated and a set of physically viable solutions is reported. This set is believed to be the first such Kaluza-Klein solutions and it includes the Kaluza-Klein counterpart of Davidson’s solution describing spacetime of a perfect fluid in rigid rotation about a regular axis.

    16. 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...

    17. Condensates and correlations in nuclear matter

      Directory of Open Access Journals (Sweden)

      Röpke G.

      2010-10-01

      Full Text Available Nuclei in dense matter are influenced by the medium. Solving an A-particle Schroedinger equation including the effects of self-energy and Pauli blocking, a quasiparticle description is introduced. Deriving thermodynamic properties, this approach contains the NSE at low densities as well as mean-field approaches at high densities. Consequences for the symmetry energy, the phase transition, the determination of thermodynamic parameters from cluster yields and astrophysical applications are discussed.

    18. Final Environmental Assessment of Mosquito Control at Joint Base Charleston - Weapons Station

      Science.gov (United States)

      2011-04-01

      www.altosid.com Wellmark International 150 I East Woodf~eld Rood 200W Schoumbufg, IUrnois: 60 173 Alto$\\d and Zoecon ore registered rrodemorks ol Wellmork...lnfonnndon and Provide C’tlmmrnt.; 1’be un!dgned rlrnJ\\ R)NSJ ond a copy of 1M dr;JII El\\ ""’ available at the Dll!dt~ Rood Bt’lllll:h of the Charleston

    19. Un algorithme de fouille de données générique et parallèle pour architecture multi-coeurs

      OpenAIRE

      Negrevergne, Benjamin

      2011-01-01

      In the pattern mining field, there exist a large number of algorithms that can solve a large variety of distinct but similar pattern mining problems. This variety prevent broad adoption of data analysis with pattern mining algorithms. In this thesis we propose a formal framework that is able to capture a broad range of pattern mining problems. We illustrate the generality of our framework by formalizing three different pattern mining problems: the problem of closed frequent itemset mining, the ...

    20. France’s War in Mali: Lessons for an Expeditionary Army

      Science.gov (United States)

      2014-01-01

      28 3.2. Planned Deployment of SCORPION ...vehicles and dismounted soldiers. Some of the systems are being fi elded now, although the overall system of systems referred to by the French as SCORPION ...Michel Goya, October 3, 2013. Figure 3.2 Planned Deployment of SCORPION SOURCE: Information from Nicolas Perche, " SCORPION Program," Direction générale

    1. Association between risk factors for injurious falls and new benzodiazepine prescribing in elderly persons

      OpenAIRE

      2009-01-01

      Abstract Background Benzodiazepines are frequently prescribed to elderly patients' despite concerns about adverse effects leading to injurious falls. Previous studies have not investigated the extent to which patients with pre-existing risk factors for falls are prescribed benzodiazepines. The objective of this study is to assess if some of the risk factors for falls are associated with new benzodiazepine prescriptions in elderly persons. Methods Using provincial administrative databases, eld...

    2. Environmental protection: private vegetable gardens on water protected areas in Ljubljana

      Directory of Open Access Journals (Sweden)

      Sara Strajnar

      2008-12-01

      Full Text Available The areas of allotment gardens and private vegetable gardens are two types of ‘small-scale agriculture’ on water protected areas in Ljubljana and surroundings. From the environmental protection point of view, these gardens are important for the intensity of production and large number of gardeners. In author’s graduation thesis the gardening habits have been investigated in detail. We combined data from fi eld work with numerous measurements of phytopharmaceutical products and nutrients in soil and vegetables.

    3. A Generalized Kinetic Model of the T-Cell Independent Primary Immune Response.

      Science.gov (United States)

      2014-09-26

      Immune response Immunology 20. ABSTRACT (Continue on revere elde If neceery amd idenlify by block number) A generalized kinetic model has been developed...scientific discovery. Unfortunately, Jenner’s discovery had little impact on preventing any other disease or on our detailed understanding of the...if the rate of replication of the antigen is varied it is possible for the antigen concentration not to come down for longer than the _ life

    4. Accelerating our Second Transformation. 2010 Annual Report

      Science.gov (United States)

      2010-01-01

      Malloy Leonardo Manning (Team Lead)* Donald Mansfi eld Clarence Roberts Marion Robinson Jean Sims Dr. Ray Ward Lee Washington Defense AT&L Magazine...80 Inside Letter from the Acting President In 2010, Secretary of Defense Robert Gates pushed Department of Defense organizations toward a...commander, Air Force Materiel Command; ADM Jonathan Greenert, USN, vice chief of naval operations; Gen. Robert Kehler, USAF, commander, Air Force

    5. Unified Airport Pavement Design and Analysis Concepts Workshops Held in Cambridge, Massachusetts on 16-17 July 1991

      Science.gov (United States)

      1992-07-01

      researcher but have noa been used extensively for airpor pavemen analysis. Finally, thet are wodels that have been devope in otr egb elds tha c be applied...primarily designed as a tool for the structural engineer, while GEOSYS is geared more toward geotechnical problems. Unfortunately, due to their general...York, (1982) 2. Arthur Q. Tool , "Relation Between Inelastic Deformubility and Thermal Expansion of Glass in its Annealing Range," J&m9l of The

    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. A rotating charged black hole solution in () gravity

      Indian Academy of Sciences (India)

      Alexis Larrañaga

      2012-05-01

      In the context of () theories of gravity, we address the problem of finding a rotating charged black hole solution in the case of constant curvature. A new metric is obtained by solving the field equations and we show that its behaviour is typical of a rotating charged source. In addition, we analyse the thermodynamics of the new black hole. The results ensure that the thermodynamical properties in () gravities are qualitatively similar to those of standard General Relativity.

    8. Synthesis and Charge Transport Properties of Polymers Derived from Oxidation of 1-H-1’(6-pyrrol-1-yl)-hexyl-4,4’-bipyridinium Bis-hexafluorophosphate and Demonstration of a pH Sensitive Microelectrochemical Transistor Derived from the Redox Properties of a Conventional Redox Center.

      Science.gov (United States)

      1988-08-15

      platinized poly(3- methylthiophene), 7b a viologen /quinone polymer, 9 ferrocyanide-loaded protonated poly(4-vinylpyridine),10 and electroactive metal...number) FiELD GROUP SUB-GROUP Microelectrode array, redox polymer, polypyrrole, viologen 19. ABSTRACT (Continue on reverse if necessary and identify by...electrochemical properties of redox polymers, having a poly- pyrrole backbone and viologen subunits, derived from oxidative electropolymerization of l

    9. Automatic Detection and Segmentation of Kidneys in 3D CT Images Using Random Forests

      OpenAIRE

      Cuingnet, Rémi; Prevost, Raphaël; Lesage, David; Cohen, Laurent D.; Mory, Benoît; Ardon, Roberto

      2012-01-01

      International audience; Kidney segmentation in 3D CT images allows extracting useful information for nephrologists. For practical use in clinical routine, such an algorithm should be fast, automatic and robust to contrast-agent enhancement and elds of view. By combining and re ning state-of-the-art techniques (random forests and template deformation), we demonstrate the possibility of building an algorithm that meets these requirements. Kidneys are localized with random forests following a co...

    10. 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.

    11. Supporting elementary science education for English learners: An evaluation instrument to promote constructivist teaching

      Science.gov (United States)

      Gibbons, Beatrice Lowney

      2002-01-01

      The purpose of this study was to develop an evaluation instrument to be used by elementary school administrators in the promotion of constructivist teaching of elementary science for English Learners using a qualitative and quantitative design that identified effective instructional strategies to be included on the evaluation instrument. This study was conducted in fifth grade classrooms of predominately English Learners whose teachers are CLAD-certified, tenured teachers with at least three years of teaching experience. The classroom observations took place within a multicultural school district with predominantly Hispanic and Filipino students in the Southern San Joaquin Valley of California. The evaluation instrument was used to observe these teachers teach elementary science lessons to classrooms of predominately English Learners. The frequency of the use of the ELD/SDAIE instructional strategies were noted on the evaluation instrument with a check mark, indicating the fact that an instructional technique was employed by the teacher. These observation visits revealed what type of instructional strategies were being utilized in the teaching of science to fifth grade English Learners, whether these CLAD-certified teachers were using ELD strategies, and whether the incidence of ELD/SDAIE constructivist instructional techniques increased with the repeated use of the evaluation instrument. As a result of this study, an evaluation instrument to be utilized by school administrators in the evaluation of elementary science instruction to English Learners was developed. The repeated use of this evaluation instrument coupled with preobservation and postobservation conferences may result in the increase in frequency of ELD/SDAIE methodology and constructivist strategies listed on the evaluation instrument in the elementary science classroom.

    12. The Education of English Language Learners in Arizona: A Legacy of Persisting Achievement Gaps in a Restrictive Language Policy Climate

      Science.gov (United States)

      Garcia, Eugene E.; Lawton, Kerry; Diniz de Figueiredo, Eduardo H.

      2010-01-01

      This report reviews achievement gaps in both reading and math between ELL and non-ELL students in Arizona over the post-Proposition 203 period 2005-2009 and during the first year of implementation of the 4 hour ELD block, 2008-09. The study finds that Arizona has made little to no progress in closing the achievement gap between ELL and non-ELL…

    13. Between occupation and a hard place : WWII anniversary splits Russia and Estonia / Yelena Shesternina

      Index Scriptorium Estoniae

      Shesternina, Yelena

      2007-01-01

      2007. a. märtsis allkirjastas president Toomas Hendrik Ilves pühade ja tähtpäevade seaduse muutmise seaduse, millega nimetati 22. september vastupanuvõitluse mälestuspäevaks. Tallinna vabastamise tähtpäeva eel peetud kõnes asetas president võrdusmärgi kommunistide ja natside vahele, öeldes et Punaarmee ja NKVD "vabastasid" Eestit täpselt niisama palju kui Wehrmacht ja Gestapo enne neid

    14. Light charged particle emission in heavy-ion reactions – What have we learnt?

      Indian Academy of Sciences (India)

      S Kailas

      2001-07-01

      Light charged particles emitted in heavy-ion induced reactions, their spectra and angular distributions measured over a range of energies, carry the signature of the underlying reaction mechanisms. Analysis of data of light charged particles, both inclusive and exclusive measured in coincidence with gamma rays, fission products, evaporation residues have yielded interesting results which bring out the influence of nuclear structure, nuclear mean field and dynamics on the emission of these particles.

    15. 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.

    16. From combinatorial optimization to real algebraic geometry and back

      Directory of Open Access Journals (Sweden)

      Janez Povh

      2014-12-01

      Full Text Available In this paper, we explain the relations between combinatorial optimization and real algebraic geometry with a special focus to the quadratic assignment problem. We demonstrate how to write a quadratic optimization problem over discrete feasible set as a linear optimization problem over the cone of completely positive matrices. The latter formulation enables a hierarchy of approximations which rely on results from polynomial optimization, a sub-eld of real algebraic geometry.

    17. H-ATLAS High-Z Sources: An Optimal Sample for Cross-Correlation Analyses

      CERN Document Server

      González-Nuevo, J; Bianchini, F

      2014-01-01

      We report a highly signicant ( > 10 ) spatial correlation between galaxies with S 350 m 30 mJy detected in the equatorial elds of the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS) with estimated redshifts & 1 : 5, and SDSS or GAMA galaxies at 0 : 2 z 0 : 6. The signicance of the cross-correlation is much higher than those reported so far for samples with non-overlapping redshift distributions selected in other wavebands.

    18. Non-minimal quintessence: Dynamics and coincidence problem

      Indian Academy of Sciences (India)

      Fatimah Shojai; Ali Shojai

      2011-12-01

      Brans–Dicke scalar–tensor theory provides a conformal coupling of the scalar field with gravity in Einstein’s frame. This model is equivalent to an interacting quintessence in which dark matter is coupled to dark energy. This provides a natural mechanism to alleviate the coincidence problem. We investigate the dynamics of this model and show that it leads to comparable dark energy and dark matter densities today.

    19. Some Trends in the Philosophy of Physics

      Directory of Open Access Journals (Sweden)

      Henrik Zinkernagel

      2011-07-01

      Full Text Available A short review of some recent developments in the philosophy of physics is presented. I focus on themes which illustrate relations and points of common interest between philosophy of physics and three of its `neighboring' elds: Physics, metaphysics and general philosophy of science. The main examples discussed in these three `border areas' are (i decoherence and the interpretation of quantum mechanics; (ii time in physics and metaphysics; and (iiimethodological issues surrounding the multiverse idea in modern cosmology.

    20. Fluoroscopically Guided Interventional Procedures: A Review of Radiation Effects on Patients’ Skin and Hair

      Science.gov (United States)

      2010-02-01

      ters below the skin . The build-up of dose below the surface can minimize injury of skin . This is often called skin sparing . Because orthovoltage...radiation ther- apy does not exhibit skin sparing , clini- cal radiation therapy with orthovoltage equipment was prescribed in a manner that... skin reaction in deep therapy as a function of size of the fi eld: a law for radiotherapy [in German] . Fortschr Geb Rontgenstr 1955 ; 82 : 387

    1. Naval War College Review. Volume 63, Number 3, Summer 2010

      Science.gov (United States)

      2010-01-01

      Continental Shelf, an inter- national commission of experts in marine geology and related fi elds established by UNCLOS for confi rmation of national claims...presence of Bangladesh and Pakistan, and in the north by the Himalayas. In this regard, India’s access to Southwest Asia runs into a geopolitical barrier...because of its rivalry with Pakistan. Simi- larly, India suffers constraints with respect to East Asia imposed by Bangladesh and Burma, which

    2. 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.

    3. A unified view on Aharanov–Bohm like phases and some applications

      Indian Academy of Sciences (India)

      C S Unnikrishnan

      2001-02-01

      The analysis of the Aharanov–Bohm phase and other similar physical effects in this paper is motivated by the philosophy that all physical changes, including phase changes, should originate in one of the local physical interactions even if they are described elegantly and concisely as topological or geometric changes. The topological or geometric nature comes about either due to an additional physical principle or due to certain special spatial or temporal property of the fields from the source. Similar remarks apply to rotation or precession of polarization and spin vectors. As a primary example I describe the Aharanov–Bohm phase as arising from the Coulomb interaction of a charge in the electrostatic potential created by other charges. The topological nature comes about because the interaction energy has zero gradient throughout space, except in a compact region enclosed by the quantum paths. This analysis brings out the unifying aspects of the scalar and the vector A–B effects, and the Aharanov–Casher phase. Then I discuss two other related problems with descriptions in the geometrical and the interaction pictures; I discuss how quantum complementarity is realized without the Heisenberg back action on momentum in certain atom interferometry experiments. In the second example, I show that the Thomas precession of the spin results from the local torque in the accelero-magnetic field, a field predicted in analogy with the gravitomagnetic field. I end the discussion with some remarks on the classical nature of fringe shifts in Aharanov–Bohm like phenomena in electromagnetism and gravitation.

    4. Using Evolutionary Computation to Solve the Economic Load Dispatch Problem

      Directory of Open Access Journals (Sweden)

      Samir SAYAH

      2008-06-01

      Full Text Available This paper reports on an evolutionary algorithm based method for solving the economic load dispatch (ELD problem. The objective is to minimize the nonlinear function, which is the total fuel cost of thermal generating units, subject to the usual constraints.The IEEE 30 bus test system was used for testing and validation purposes. The results obtained demonstrate the effectiveness of the proposed method for solving the economic load dispatch problem.

    5. That Kind Gentleman from China And His US Hosts

      Institute of Scientific and Technical Information of China (English)

      Zhang; Yang

      2015-01-01

      A Chinese young man in Iowa"He’s always kind to everyone,always like this,"Eleanor Dvorchak murmurs,looking out of the car window at paddy fi elds in Hebei.The vast green farmland sent her mind wandering back to Iowa 30 years before.In 1985,the Dvorchak family received a call from Mrs.Sarah Lande,a member of the Iowa Sister States,a

    6. 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.

    7. Social capital dimensions among incubated entrepreneurs

      Directory of Open Access Journals (Sweden)

      Sergio Ezequiel Quijano Quijano

      2015-12-01

      Full Text Available This article shows contributions from leading researchers in the fi eld of social capital as support of corporate sustainability and the contribution generated by a descriptive case study based on a representative sample from entrepreneurs from the Fundación Parque de Desarrollo Tecnológico (Parquesoft in Colombia, to contrast the theoretical approaches. The findings show a slight presence of social capital in the performance of incubated entrepreneurs.

    8. Importance of the What, When, and Where of Mosquito Collection Events

      Science.gov (United States)

      2009-01-01

      one another has been assisted by the development of datastandardsthatensureinteroperability.Dataschemas such as Darwin Core (http://wiki.tdwg.org/twiki...1. Continued Subterranean Polluted water Exposed pool, puddle Exposed pond, borrow pit Exposed stream, ditch, channel Forest pool Forest pond Forest ...Remarks” Þeld of Mosquitomap. Although, the Darwin Core schema is used as a basis forMosquitomap, additional categories have been de- vised especially

    9. 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.

    10. Current Situation of English Major Students’ Web-based Autonomous English Learning

      Institute of Scientific and Technical Information of China (English)

      李新华

      2015-01-01

      Through an interview of three English major students and a fi eld observation,the study explores English major students’web-based autonomous English learning situation and the problems on their way.The findings show that web-based English materials are most helpful to speaking and listening,and that students’insufficient information retrieval skill is the main problem on their way.

    11. The influence of the low-frequency magnetic fields of different parameters on the secretion of cortisol in men

      OpenAIRE

      Marta Woldańska-Okońska; Jan Czernicki; Michał Karasek

      2013-01-01

      Objectives: The aim of this paper is to test the infl uence of long-term application of the low-frequency magnetic fi elds in magnetotherapy and magnetostimulation on cortisol secretion in men. Materials and Methods: Patients were divided into three groups: 16 men underwent magnetotherapy and 20 men (divided into two groups) underwent magnetostimulation. Magnetotherapy – 2 mT induction, 40 Hz, bipolar square wave, was applied for 20 min to lumbar area. Magnetostimulation (Viofor Jaroszyk, Pal...

    12. First Report of the Herb Field Mouse , Apodemus uralensis (Pallas, 1811 from Mongolia

      Directory of Open Access Journals (Sweden)

      Setev Shar

      2015-12-01

      Full Text Available The herb fi eld mouse, Apodemus uralensis (Pallas, 1811 is recorded for the fi rst time in Mongolia, from western part of the Mongolian Altai and the adjacent Mongolian part of the Dzungarian Gobi. In addition, we discovered several additional fi ndings of this species recorded as early as 1976 from diff erent scientifi c collections. Body and skull measurements are presented along with a molecular genetic analysis of one specimen.

    13. 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.

    14. A Public Health Approach to Injury Prevention: The U.S. Military Experience

      Science.gov (United States)

      2010-01-01

      Ground, Maryland; Head- quarters, Air Force Safety Center (Burnham), Research and Epidemiology Branch, Kirtland Air Force Base, New Mexico ; EpiData Center...composed of approximately 30 members representing the military Services in the areas of operations, safety, medi- cine , epidemiology, policy, and...occupational medi- cine , and other fıelds typically consider injuries. Based on Table 8. Service safety–medical data matching resultsa Air Force Navy

    15. Electrochemical Behavior and Surface Chemistry of Nonequilibrium Aluminum Alloys: Passivity Mechanism and Fabrication Methods

      Science.gov (United States)

      1994-01-17

      alartl.rdentifvb bjock nurrber) FtELD GROUP SUB-GROUP Appreveo for LUDic release; OSirlOUtion unllmilTe. Reproduction in whole or in part is pemitted for any...the active dissolution phase. They postulated that a solute build-up might also occur in the upper atomic layers of the metal during pitting and...enrichment of the solute in stainless steels during the active dissolution stage because of preferential dissolution of iron. This enrichment provokes

    16. ACTIVITIES OF DEVELOPING VOCABULARY OF STUDENTS AND DICTIONARY USAGE IN TURKISH EDUCATION TÜRKÇE EĞİTİMİNDE ÖĞRENCİLERİN SÖZ VARLIĞINI GELİŞTİRME ETKİNLİKLERİ VE SÖZLÜK KULLANIMI

      Directory of Open Access Journals (Sweden)

      Ali GÖÇER

      2010-01-01

      Full Text Available Vocabulary is to affect the success of education, teaching and the skills of language of students. Words have important function in communication. In this study the importance of vocabulary is emphasized, the techniques need to be application during education of the students on new words and word training techniques are being investigated. Söz varlığı, öğrencilerin dil becerilerini, eğitim ve öğretim başarılarını doğrudan etkilemektedir. Bireyler arası iletişimde de söz varlığının önemi büyüktür. Bu çalışmada söz varlığının önemi üzerinde durulmakta, öğrencilere yeni kelimelerin kazandırılmasında takip edilmesi gereken teknikler ve kelime öğretimine yönelik gerçekleştirilebilecek etkinliklere işaret edilmektedir.

    17. Gıda Kalite Kontrolu ve Kontrol Kartları

      OpenAIRE

      1991-01-01

      Kalite, bir ürünün kullanılma amacına uygunluk ya da tüketici beğenisini karşılama düzeyidir. Çoğu kez sanıldığı gibi mükemmellik düzeyi değildir. Çünkü ekonomik etkenlerin de dikkate alınması gerekmektedir. Konserve kutusunun kalay yerine altınla kaplanması ile daha mükemmel bir inertlik sağlanabilir. Ancak, ekonomik olarak taşınabilir olmadığı için bu durumda kalite düzeyinin yüksekliğinden söz edilmesi yanlıştır. Bir başka açıdan kalite, vaad edilen değil de yerine getirilen şey olduğuna ...

    18. GÖRSEL SUNUM İLE GÜVEN ARALIKLARI KAVRAMINI ANLAMA

      OpenAIRE

      Navruz, Bilgin; DELEN, Erhan

      2015-01-01

      Bu çalışmada doğru kullanım ve yorumlama ile güven aralıklarının araştırmalarda sunulmasının önemi üzerinde durulmuştur. American Psychological Association (APA) (2010) yayım kılavuzu, güven aralıkları değerlerine çok önem vermekte ve çalışmalarda rapor edilmesi gerektiğini belirtmektedir. Araştırmacılar tarafından eksik ve yanlış da yorumlanabilen güven aralıkları bu çalışmada ayrıntılı olarak ele alınmış, kitaplardan da örnekler verilerek doğru ve yanlış tanımlar değerlendirilmiş ve görsel ...

    19. Otizm Spektrum Bozukluğu ve Video Modelle Öğretim

      OpenAIRE

      Derya Genç-Tosun; Onur Kurt

      2014-01-01

      Bu çalışmanın amacı, otizm spektrum bozukluğu olan bireylerin eğitiminde giderek daha sık kullanılan video modelle öğretimi tanıtmak, bu öğretim stratejisine ilişkin hazırlık çalışmalarını ve uygulama basamaklarını açıklayarak video modelle öğretimin uygulanması sırasında dikkat edilmesi önerilen noktaları sıralamaktır. Ayrıca, çalışmada video modelle öğretimin etkililiğinin ortaya konduğu araştırmalara değinerek, uygulamacı ve araştırmacılara önerilerde bulunulmuştur The purpose of t...

    20. Otizm Spektrum Bozukluğu ve Video Modelle Öğretim

      Directory of Open Access Journals (Sweden)

      Derya Genç-Tosun

      2014-12-01

      Full Text Available Bu çalışmanın amacı, otizm spektrum bozukluğu olan bireylerin eğitiminde giderek daha sık kullanılan video modelle öğretimi tanıtmak, bu öğretim stratejisine ilişkin hazırlık çalışmalarını ve uygulama basamaklarını açıklayarak video modelle öğretimin uygulanması sırasında dikkat edilmesi önerilen noktaları sıralamaktır. Ayrıca, çalışmada video modelle öğretimin etkililiğinin ortaya konduğu araştırmalara değinerek, uygulamacı ve araştırmacılara önerilerde bulunulmuştur The purpose of this study is to describe video modeling as a teaching strategy which has been increasingly and more commonly used in teaching individuals with autism spectrum disorder, to describe the steps in using video modeling, to explain important points to take into consideration during the implementation of video modeling, to cover the findings of research studies that demonstrate the effectiveness of video modeling, and to make recommendations to practitioners and researchers.