The Talbot effect in a metamaterial

Science.gov (United States)

Nikkhah, H.; Hasan, M.; Hall, T. J.

2018-02-01

The effect of anisotropy and spatial dispersion of a metamaterial on the Talbot effect may be engineered in principle. This has profound implications for applications of the Talbot effect such as the design of a multimode interference coupler (MMI). The paper describes how a metamaterial can suppress the modal phase error which otherwise limits the scaling of MMI port dimension. A binary multilayer dielectric material described by the Kronig-Penney model is shown to provide a close approximation to the required dispersion relation. Results of simulations of a multi-slotted waveguide MMI engineered to provide a polarising beam splitter function are given as an example of the method.

Parallel phase-shifting digital holography based on the fractional Talbot effect

Energy Technology Data Exchange (ETDEWEB)

Martinez-Leon, Lluis; Climent, Vicent; Lancis, Jesus; Tajahuerce, Enrique [GROC-UJI, Departament de Fisica, Universitat Jaume I, 12071 Castello (Spain); Araiza-E, Maria [Laboratorio de Procesamiento Digital de Senales, Universidad Autonoma de Zacatecas, Zacatecas (Mexico); Javidi, Bahram [Department of Electrical and Computer Engineering, University of Connecticut, CT 06269-2157 (United States); Andres, Pedro, E-mail: enrique.tajahuerce@uji.e [Departament d' Optica, Universitat de Valencia, 46100 Burjassot (Spain)

2010-02-01

A method for recording on-axis single-shot digital holograms based on the self-imaging phenomenon is reported. A simple binary two-dimensional periodic amplitude is used to codify the reference beam in a Mach-Zehnder interferometer, generating a periodic three-step phase distribution with uniform irradiance over the sensor plane by fractional Talbot effect. An image sensor records only one shot of the interference between the light field scattered by the object and the codified parallel reference beam. Images of the object are digitally reconstructed from the digital hologram through the numerical evaluation of the Fresnel diffraction integral. This scheme provides an efficient way to perform dynamic phase-shifting interferometric techniques to determine the amplitude and phase of the object light field. Unlike other parallel phase-shifting techniques, neither complex pixelated polarization devices nor special phase diffractive elements are required. Experimental results confirm the feasibility and flexibility of our method.

Talbot self-imaging phenomenon under Bessel beam illumination

Science.gov (United States)

Chakraborty, Rijuparna; Chowdhury, Subhajit Dutta; Chakraborty, Ajoy Kumar

2018-06-01

In this paper, we report the results of our theoretical studies on the phenomenon of self-imaging of periodic object under the illumination of zero-order Bessel beam. Our theoretical analysis indicates that the self-images are visible only after the walk-off distance of the Bessel beam used. It is also observed that the self-images bend around the optical axis of the setup. Besides, the present study justifies the importance of the conditions stipulated by Montgomery.

The second-order differential phase contrast and its retrieval for imaging with x-ray Talbot interferometry

International Nuclear Information System (INIS)

Yang Yi; Tang Xiangyang

2012-01-01

Purpose: The x-ray differential phase contrast imaging implemented with the Talbot interferometry has recently been reported to be capable of providing tomographic images corresponding to attenuation-contrast, phase-contrast, and dark-field contrast, simultaneously, from a single set of projection data. The authors believe that, along with small-angle x-ray scattering, the second-order phase derivative Φ ″ s (x) plays a role in the generation of dark-field contrast. In this paper, the authors derive the analytic formulae to characterize the contribution made by the second-order phase derivative to the dark-field contrast (namely, second-order differential phase contrast) and validate them via computer simulation study. By proposing a practical retrieval method, the authors investigate the potential of second-order differential phase contrast imaging for extensive applications. Methods: The theoretical derivation starts at assuming that the refractive index decrement of an object can be decomposed into δ=δ s +δ f , where δ f corresponds to the object's fine structures and manifests itself in the dark-field contrast via small-angle scattering. Based on the paraxial Fresnel-Kirchhoff theory, the analytic formulae to characterize the contribution made by δ s , which corresponds to the object's smooth structures, to the dark-field contrast are derived. Through computer simulation with specially designed numerical phantoms, an x-ray differential phase contrast imaging system implemented with the Talbot interferometry is utilized to evaluate and validate the derived formulae. The same imaging system is also utilized to evaluate and verify the capability of the proposed method to retrieve the second-order differential phase contrast for imaging, as well as its robustness over the dimension of detector cell and the number of steps in grating shifting. Results: Both analytic formulae and computer simulations show that, in addition to small-angle scattering, the

Towards simultaneous Talbot bands based optical coherence tomography and scanning laser ophthalmoscopy imaging.

Science.gov (United States)

Marques, Manuel J; Bradu, Adrian; Podoleanu, Adrian Gh

2014-05-01

We report a Talbot bands-based optical coherence tomography (OCT) system capable of producing longitudinal B-scan OCT images and en-face scanning laser ophthalmoscopy (SLO) images of the human retina in-vivo. The OCT channel employs a broadband optical source and a spectrometer. A gap is created between the sample and reference beams while on their way towards the spectrometer's dispersive element to create Talbot bands. The spatial separation of the two beams facilitates collection by an SLO channel of optical power originating exclusively from the retina, deprived from any contribution from the reference beam. Three different modes of operation are presented, constrained by the minimum integration time of the camera used in the spectrometer and by the galvo-scanners' scanning rate: (i) a simultaneous acquisition mode over the two channels, useful for small size imaging, that conserves the pixel-to-pixel correspondence between them; (ii) a hybrid sequential mode, where the system switches itself between the two regimes and (iii) a sequential "on-demand" mode, where the system can be used in either OCT or SLO regimes for as long as required. The two sequential modes present varying degrees of trade-off between pixel-to-pixel correspondence and independent full control of parameters within each channel. Images of the optic nerve and fovea regions obtained in the simultaneous (i) and in the hybrid sequential mode (ii) are presented.

A dispersion-balanced Discrete Fourier Transform of repetitive pulse sequences using temporal Talbot effect

Science.gov (United States)

Fernández-Pousa, Carlos R.

2017-11-01

We propose a processor based on the concatenation of two fractional temporal Talbot dispersive lines with balanced dispersion to perform the DFT of a repetitive electrical sequence, for its use as a controlled source of optical pulse sequences. The electrical sequence is used to impart the amplitude and phase of a coherent train of optical pulses by use of a modulator placed between the two Talbot lines. The proposal has been built on a representation of the action of fractional Talbot effect on repetitive pulse sequences and a comparison with related results and proposals. It is shown that the proposed system is reconfigurable within a few repetition periods, has the same processing rate as the input optical pulse train, and requires the same technical complexity in terms of dispersion and pulse width as the standard, passive pulse-repetition rate multipliers based on fractional Talbot effect.

In-phased second harmonic wave array generation with intra-Talbot-cavity frequency-doubling.

Science.gov (United States)

Hirosawa, Kenichi; Shohda, Fumio; Yanagisawa, Takayuki; Kannari, Fumihiko

2015-03-23

The Talbot cavity is one promising method to synchronize the phase of a laser array. However, it does not achieve the lowest array mode with the same phase but the highest array mode with the anti-phase between every two adjacent lasers, which is called out-phase locking. Consequently, their far-field images exhibit 2-peak profiles. We propose intra-Talbot-cavity frequency-doubling. By placing a nonlinear crystal in a Talbot cavity, the Talbot cavity generates an out-phased fundamental wave array, which is converted into an in-phase-locked second harmonic wave array at the nonlinear crystal. We demonstrate numerical calculations and experiments on intra-Talbot-cavity frequency-doubling and obtain an in-phase-locked second harmonic wave array for a Nd:YVO₄ array laser.

Distribution of unresolvable anisotropic microstructures revealed in visibility-contrast images using x-ray Talbot interferometry

International Nuclear Information System (INIS)

Yashiro, Wataru; Harasse, Sebastien; Kawabata, Katsuyuki; Kuwabara, Hiroaki; Yamazaki, Takashi; Momose, Atsushi

2011-01-01

X-ray Talbot interferometry has been widely used as a technique for x-ray phase imaging and tomography. We propose a method using this interferometry for mapping distribution of parameters characterizing anisotropic microstructures, which are typically of the order of μm in size and cannot be resolved by the imaging system, in a sample. The method uses reduction in fringe visibility, which is caused by such unresolvable microstructures, in moire images obtained using an interferometer. We applied the method to a chloroprene rubber sponge sample, which exhibited uniaxial anisotropy of reduced visibility. We measured the dependencies of reduced visibility on both the Talbot order and the orientation of the sample and obtained maps of three parameters and their anisotropies that characterize the unresolvable anisotropic microstructures in the sample. The maps indicated that the anisotropy of the sample's visibility contrast mainly originated from the anisotropy of the microstructure elements' average size. Our method directly provides structural information on unresolvable microstructures in real space, which is only accessible through the ultra-small-angle x-ray scattering measurements in reciprocal space, and is expected to be broadly applied to material, biological, and medical sciences.

Talbot phase-contrast x-ray imaging for the small joints of the hand

Energy Technology Data Exchange (ETDEWEB)

Stutman, Dan [Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218 (United States); Beck, Thomas J [Quantum Medical Metrics, 1450 South Rolling Road, Baltimore, MD 21227 (United States); Carrino, John A [Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University, Baltimore, MD 21287 (United States); Bingham, Clifton O, E-mail: stutman@pha.jhu.edu [Divisions of Rheumatology and Allergy and Clinical Immunology, Johns Hopkins University, Baltimore, MD 21224 (United States)

2011-09-07

A high-resolution radiographic method for soft tissues in the small joints of the hand would aid in the study and treatment of rheumatoid arthritis (RA) and osteoarthritis (OA), which often attacks these joints. Of particular interest would be imaging with <100 {mu}m resolution the joint cartilage, whose integrity is a main indicator of disease. Differential phase-contrast (DPC) or refraction-based x-ray imaging with Talbot grating interferometers could provide such a method, since it enhances soft tissue contrast and can be implemented with conventional x-ray tubes. A numerical joint phantom was first developed to assess the angular sensitivity and spectrum needed for a hand DPC system. The model predicts that, due to quite similar refraction indexes for joint soft tissues, the refraction effects are very small, requiring high angular resolution. To compare our model to experiment we built a high-resolution bench-top interferometer using 10 {mu}m period gratings, a W anode tube and a CCD-based detector. Imaging experiments on animal cartilage and on a human finger support the model predictions. For instance, the estimated difference between the index of refraction of cartilage and water is of only several percent at {approx}25 keV mean energy, comparable to that between the linear attenuation coefficients. The potential advantage of DPC imaging thus comes mainly from the edge enhancement at the soft tissue interfaces. Experiments using a cadaveric human finger are also qualitatively consistent with the joint model, showing that refraction contrast is dominated by tendon embedded in muscle, with the cartilage layer difficult to observe in our conditions. Nevertheless, the model predicts that a DPC radiographic system for the small hand joints of the hand could be feasible using a low energy quasi-monochromatic source, such as a K-edge filtered Rh or Mo tube, in conjunction with a {approx}2 m long 'symmetric' interferometer operated in a high Talbot order.

Disclosure of domain structure in cubic CaxZr1-xO2-x, 0x15 ≤ x ≤ 0x20, by Talbot image enhancement of high-resolution electron micrographs

International Nuclear Information System (INIS)

Rossell, H.J.; Wilson, I.J.; Sellar, J.R.

1991-01-01

High-resolution electron microscope images have been recorded of several cystalline samples of calcia-stabilized zirconia (Ca-CSZ) and of the fluorite-related superstructure phase φ 1 (CaZr 4 O 9 ). The contrast of the CSZ images has been enhanced markedly by the light-optical Talbot self-imaging technique. Is is demonstrated that the CSZ crystals contain a coherent dispersion of microdomains approximately 30 A in diameter, and that the structure of the microdomains is that of φ 1 . (orig.)

Measurement of the modulation transfer function of a charge-coupled device array by the combination of the self-imaging effect and slanted edge method.

Science.gov (United States)

Najafi, Sedigheh; Madanipour, Khosro

2013-07-01

In this paper, by a combination of the self-imaging effect for Ronchi gratings and the standard slanted edge modulation transfer function (MTF) measurement method for CCD cameras, the MTF of the CCD array without optics is measured. For this purpose, a Ronchi-type grating is illuminated by an expanded He-Ne laser. A self-image of the grating appears without optics on the CCD array that is located on the Talbot distance. The lines of the self-image of the grating are used as a slanted edge array. This method has all the advantages of the slanted edge method, and also since the array of the edge is ready, the total area of the CCD can be tested. The measured MTF is related to the CCD array without optics.

Temporal Talbot effect in propagation of attosecond electron waves

International Nuclear Information System (INIS)

Varro, S.

2010-01-01

Complete text of publication follows. The rapid development in extreme strong-field and extreme short-pulse laser physics provide us with many potentials to explore the dynamics of fundamental processes taking place in light-matter interactions and in propagation of electromagnetic or matter waves. The present paper discusses the propagation of above-threshold electron waves generated by (not necessary ultra-short) strong laser fields. Recently we have shown that - in analogy with the formation of attosecond light pulses by interference of high-order harmonics - the wave components of photoelectrons are naturally assembled in attosecond spikes, through the Fourier synthesis of these de Broglie waves. We would like to emphasize that the proposed scheme does not presupposes an a priori ultrashort excitation. Owing to the inherent dispersion of electron waves even in vacuum, the clean attosecond structure (emanating perpendicularly from a metal target surface) is gradually spoiled due to destructive interference. Fortunately the collapsed fine structure recovers itself at certain distances from the source within well-defined 'revival layers'. This is a temporal analogon of the optical Talbot effect representing the self-imaging of a grating, which is illuminated by stationary plane waves, in the near field. The 'collaps bands' and the 'revival layers' introduced in ref. 3 have been found merely on the basis of some attosecond layers turned out to show certain regularities. In the meantime we have derived approximate analytic formulae for the propagation characteristics, with the help of which we can keep track of the locations of the 'collaps bands' and the 'revival layers' on a larger scale. We shall report on these semiclassical results, and also discuss their possible connection with the recently found entropy remnants in multiphoton Compton scattering by electronic wave packets. Acknowledgement. This work has been supported by the Hungarian National Scientific

Pulse repetition rate multiplication by Talbot effect in a coaxial fiber

Science.gov (United States)

Dhingra, Nikhil; Saxena, Geetika Jain; Anand, Jyoti; Sharma, Enakshi K.

2018-03-01

We use a coaxial fiber, which is a cylindrical coupled waveguide structure consisting of two concentric cores, the inner rod and an outer ring core as a first order dispersive media to achieve temporal Talbot effect for pulse repetition rate multiplication (PRRM) in high bit rate optical fiber communication. It is observed that for an input Gaussian pulse train with pulse width, 2τ0=1ps at a repetition rate of 40 Gbps (repetition period, T=25ps), an output repetition rate of 640 Gbps can be achieved without significant distortion at a length of 40.92 m.

X-ray phase scanning setup for non-destructive testing using Talbot-Lau interferometer

Science.gov (United States)

Bachche, S.; Nonoguchi, M.; Kato, K.; Kageyama, M.; Koike, T.; Kuribayashi, M.; Momose, A.

2016-09-01

X-ray grating interferometry has a great potential for X-ray phase imaging over conventional X-ray absorption imaging which does not provide significant contrast for weakly absorbing objects and soft biological tissues. X-ray Talbot and Talbot-Lau interferometers which are composed of transmission gratings and measure the differential X-ray phase shifts have gained popularity because they operate with polychromatic beams. In X-ray radiography, especially for nondestructive testing in industrial applications, the feasibility of continuous sample scanning is not yet completely revealed. A scanning setup is frequently advantageous when compared to a direct 2D static image acquisition in terms of field of view, exposure time, illuminating radiation, etc. This paper demonstrates an efficient scanning setup for grating-based Xray phase imaging using laboratory-based X-ray source. An apparatus consisting of an X-ray source that emits X-rays vertically, optical gratings and a photon-counting detector was used with which continuously moving objects across the field of view as that of conveyor belt system can be imaged. The imaging performance of phase scanner was tested by scanning a long continuous moving sample at a speed of 5 mm/s and absorption, differential-phase and visibility images were generated by processing non-uniform moire movie with our specially designed phase measurement algorithm. A brief discussion on the feasibility of phase scanner with scanning setup approach including X-ray phase imaging performance is reported. The successful results suggest a breakthrough for scanning objects those are moving continuously on conveyor belt system non-destructively using the scheme of X-ray phase imaging.

Self-enhancing effects of exposure to thin-body images.

Science.gov (United States)

Joshi, Ramona; Herman, C Peter; Polivy, Janet

2004-04-01

This study examines the effect of thin-body media images on mood, self-esteem, and self-image ratings of restrained and unrestrained eaters. A secondary purpose was to examine whether these effects were influenced by exposure duration. Under the guise of a perception study, participants were exposed to thin-body or control advertisements (e.g., perfume bottles) for either 7 or 150 ms and then completed a questionnaire packet. Restrained eaters reported more favorable self-image and social self-esteem (but not appearance self-esteem) scores after exposure to thin-body images than after exposure to control advertisements. The self-image and social self-esteem scores of unrestrained eaters were unaffected by advertisement type, but their appearance self-esteem scores were lower after exposure to thin-body advertisements. No differences were found for mood ratings and total self-esteem. We discuss restraint status as a moderator of the effects of thin-body images on women's body image. Copyright 2004 by Wiley Periodicals, Inc. Int J Eat Disord 35: 333-341, 2004.

46 CFR 7.85 - St. Simons Island, GA to Little Talbot Island, FL.

Science.gov (United States)

2010-10-01

... 46 Shipping 1 2010-10-01 2010-10-01 false St. Simons Island, GA to Little Talbot Island, FL. 7.85... BOUNDARY LINES Atlantic Coast § 7.85 St. Simons Island, GA to Little Talbot Island, FL. (a) A line drawn from latitude 31°04.1′ N. longitude 81°16.7′ W. (St. Simons Lighted Whistle Buoy “ST S”) to latitude 30...

Development of an x-ray Talbot-Lau moire deflectometer for fast density profile measurements of dense plasmas generated by beam-target interactions

Energy Technology Data Exchange (ETDEWEB)

Clayton, Dan [National Security Technol., LLC, Los Alamos, NM (United States); Berninger, M; Meidinger, A; Stutman, Dan; Valdivia, Maria Pia

2015-05-01

For the first time an x-ray Talbot-Lau moire deflectometer is being developed that will use a flash tube source and fast detector for dynamic density gradient measurements. In Talbot-Lau moire deflectometry, an x-ray grating makes an image of itself on a second grating (the Talbot effect) to produce a moire pattern on a detector. The test object is placed between these gratings, with variations in index of refraction changing the pattern. A third grating in front of an incoherent x-ray source produces an array of coherent sources. With a 150 kV x-ray flash tube as the source, the gratings are placed in a glancing angle setup for performance at ~60 keV. The detector is a gated CCD with a fast scintillator for x-ray conversion. This diagnostic, designed for the Dual-Axis Radiographic Hydrodynamic Test facility (DARHT) at Los Alamos National Laboratory, measures the density profile of dense plasma plumes ejected from beam-target interactions. DARHT has two high-current, pulsed, inductive linear electron accelerators with bremsstrahlung targets at the end of each beam line to create 2-D radiographic images of hydrodynamic tests. One multi-pulse accelerator has up to four beam pulses striking the same target within 2 μs. Computer simulations that model target evolution and ejected material between pulses are used to design these targets for optimal radiographic performance; the x-ray deflectometer will directly measure density gradients in the ejected plumes and provide the first experimental constraints to these models. During the first year, currently underway, the diagnostic systems are being designed. In year two, the flash tube and fast detector will be deployed at DARHT for radiographic imaging while the deflectometer is built and tested on the bench with a continuous source. Finally, in year three, the fast deflectometer will be installed on DARHT and density measurements will be performed.

Phase-space evolution of x-ray coherence in phase-sensitive imaging.

Science.gov (United States)

Wu, Xizeng; Liu, Hong

2008-08-01

X-ray coherence evolution in the imaging process plays a key role for x-ray phase-sensitive imaging. In this work we present a phase-space formulation for the phase-sensitive imaging. The theory is reformulated in terms of the cross-spectral density and associated Wigner distribution. The phase-space formulation enables an explicit and quantitative account of partial coherence effects on phase-sensitive imaging. The presented formulas for x-ray spectral density at the detector can be used for performing accurate phase retrieval and optimizing the phase-contrast visibility. The concept of phase-space shearing length derived from this phase-space formulation clarifies the spatial coherence requirement for phase-sensitive imaging with incoherent sources. The theory has been applied to x-ray Talbot interferometric imaging as well. The peak coherence condition derived reveals new insights into three-grating-based Talbot-interferometric imaging and gratings-based x-ray dark-field imaging.

An x-ray backlit Talbot-Lau deflectometer for high-energy-density electron density diagnostics

Science.gov (United States)

Valdivia, M. P.; Stutman, D.; Stoeckl, C.; Theobald, W.; Mileham, C.; Begishev, I. A.; Bromage, J.; Regan, S. P.

2016-02-01

X-ray phase-contrast techniques can measure electron density gradients in high-energy-density plasmas through refraction induced phase shifts. An 8 keV Talbot-Lau interferometer consisting of free standing ultrathin gratings was deployed at an ultra-short, high-intensity laser system using K-shell emission from a 1-30 J, 8 ps laser pulse focused on thin Cu foil targets. Grating survival was demonstrated for 30 J, 8 ps laser pulses. The first x-ray deflectometry images obtained under laser backlighting showed up to 25% image contrast and thus enabled detection of electron areal density gradients with a maximum value of 8.1 ± 0.5 × 1023 cm-3 in a low-Z millimeter sized sample. An electron density profile was obtained from refraction measurements with an error of x-ray source-size, similar to conventional radiography.

A general theory of interference fringes in x-ray phase grating imaging

International Nuclear Information System (INIS)

Yan, Aimin; Wu, Xizeng; Liu, Hong

2015-01-01

Purpose: The authors note that the concept of the Talbot self-image distance in x-ray phase grating interferometry is indeed not well defined for polychromatic x-rays, because both the grating phase shift and the fractional Talbot distances are all x-ray wavelength-dependent. For x-ray interferometry optimization, there is a need for a quantitative theory that is able to predict if a good intensity modulation is attainable at a given grating-to-detector distance. In this work, the authors set out to meet this need. Methods: In order to apply Fourier analysis directly to the intensity fringe patterns of two-dimensional and one-dimensional phase grating interferometers, the authors start their derivation from a general phase space theory of x-ray phase-contrast imaging. Unlike previous Fourier analyses, the authors evolved the Wigner distribution to obtain closed-form expressions of the Fourier coefficients of the intensity fringes for any grating-to-detector distance, even if it is not a fractional Talbot distance. Results: The developed theory determines the visibility of any diffraction order as a function of the grating-to-detector distance, the phase shift of the grating, and the x-ray spectrum. The authors demonstrate that the visibilities of diffraction orders can serve as the indicators of the underlying interference intensity modulation. Applying the theory to the conventional and inverse geometry configurations of single-grating interferometers, the authors demonstrated that the proposed theory provides a quantitative tool for the grating interferometer optimization with or without the Talbot-distance constraints. Conclusions: In this work, the authors developed a novel theory of the interference intensity fringes in phase grating x-ray interferometry. This theory provides a quantitative tool in design optimization of phase grating x-ray interferometers

A general theory of interference fringes in x-ray phase grating imaging.

Science.gov (United States)

Yan, Aimin; Wu, Xizeng; Liu, Hong

2015-06-01

The authors note that the concept of the Talbot self-image distance in x-ray phase grating interferometry is indeed not well defined for polychromatic x-rays, because both the grating phase shift and the fractional Talbot distances are all x-ray wavelength-dependent. For x-ray interferometry optimization, there is a need for a quantitative theory that is able to predict if a good intensity modulation is attainable at a given grating-to-detector distance. In this work, the authors set out to meet this need. In order to apply Fourier analysis directly to the intensity fringe patterns of two-dimensional and one-dimensional phase grating interferometers, the authors start their derivation from a general phase space theory of x-ray phase-contrast imaging. Unlike previous Fourier analyses, the authors evolved the Wigner distribution to obtain closed-form expressions of the Fourier coefficients of the intensity fringes for any grating-to-detector distance, even if it is not a fractional Talbot distance. The developed theory determines the visibility of any diffraction order as a function of the grating-to-detector distance, the phase shift of the grating, and the x-ray spectrum. The authors demonstrate that the visibilities of diffraction orders can serve as the indicators of the underlying interference intensity modulation. Applying the theory to the conventional and inverse geometry configurations of single-grating interferometers, the authors demonstrated that the proposed theory provides a quantitative tool for the grating interferometer optimization with or without the Talbot-distance constraints. In this work, the authors developed a novel theory of the interference intensity fringes in phase grating x-ray interferometry. This theory provides a quantitative tool in design optimization of phase grating x-ray interferometers.

An extension of the talbot-ogden hydrology model to an affine multi-dimensional moisture content domain

KAUST Repository

Yu, Han

2013-09-01

The Talbot-Ogden hydrology model provides a fast mass conservative method to compute infiltration in unsaturated soils. As a replacement for a model based on Richards equation, it separates the groundwater movement into infiltration and redistribution for every time step. The typical feature making this method fast is the discretization of the moisture content domain rather than the spatial one. The Talbot-Ogden model rapidly determines how well ground water and aquifers are recharged only. Hence, it differs from models based on advanced reservoir modeling that are uniformly far more expensive computationally since they determine where the water moves in space instead, a completely different and more complex problem.According to the pore-size distribution curve for many soils, this paper extends the one dimensional moisture content domain into a two dimensional one by keeping the vertical spatial axis. The proposed extension can describe any pore-size or porosity distribution as an important soil feature. Based on this extension, infiltration and redistribution are restudied. The unconditional conservation of mass in the Talbot-Ogden model is inherited in this extended model. A numerical example is given for the extended model.

Effects of written emotional disclosure on implicit self-esteem and body image.

Science.gov (United States)

O'Connor, Daryl B; Hurling, Robert; Hendrickx, Hilde; Osborne, Gabrielle; Hall, Josephine; Walklet, Elaine; Whaley, Ann; Wood, Helen

2011-09-01

Negative body image has a significant impact on self-esteem, disordered eating, and general health. Writing about distressing events and experiences has been found to have beneficial effects on psychological and physical health outcomes. This study investigated whether a written self-disclosure intervention, compared to a writing about body image success stories (WSS) intervention, had beneficial effects on self-esteem and body image. One hundred and fifty-eight women (aged 18-22 years) were allocated to either: written emotional disclosure (WED); WSS; or a control, non-emotional writing condition. All measures were completed at baseline and at follow-up 4 weeks later. A condition by time interaction was observed for implicit self-esteem, such that levels of self-esteem were improved 4 weeks later in the WED condition. Implicit self-esteem was also found to be greater following WED compared to the control condition, but not following WSS. This is the first study to demonstrate that WED has beneficial effects on implicit outcome measures such as self-esteem indicating that the positive effects of expressive writing may initially operate by influencing automatically activated attitudes towards the self. The impact of WED on implicit self-esteem may have implications for future health. ©2010 The British Psychological Society.

Displacement Talbot lithography: an alternative technique to fabricate nanostructured metamaterials

Science.gov (United States)

Le Boulbar, E. D.; Chausse, P. J. P.; Lis, S.; Shields, P. A.

2017-06-01

Nanostructured materials are essential for many recent electronic, magnetic and optical devices. Lithography is the most common step used to fabricate organized and well calibrated nanostructures. However, feature sizes less than 200 nm usually require access to deep ultraviolet photolithography, e-beam lithography or soft lithography (nanoimprinting), which are either expensive, have low-throughput or are sensitive to defects. Low-cost, high-throughput and low-defect-density techniques are therefore of interest for the fabrication of nanostructures. In this study, we investigate the potential of displacement Talbot lithography for the fabrication of specific structures of interest within plasmonic and metamaterial research fields. We demonstrate that nanodash arrays and `fishnet'-like structures can be fabricated by using a double exposure of two different linear grating phase masks. Feature sizes can be tuned by varying the exposure doses. Such lithography has been used to fabricate metallic `fishnet'-like structures using a lift-off technique. This proof of principle paves the way to a low-cost, high-throughput, defect-free and large-scale technique for the fabrication of structures that could be useful for metamaterial and plasmonic metasurfaces. With the development of deep ultraviolet displacement Talbot lithography, the feature dimensions could be pushed lower and used for the fabrication of optical metamaterials in the visible range.

High-speed X-ray phase tomography with Talbot interferometer and fringe scanning method

International Nuclear Information System (INIS)

Kibayashi, Shunsuke; Harasse, Sébastien; Yashiro, Wataru; Momose, Atsushi

2012-01-01

High-speed X-ray phase tomography based on the Fourier-transform method has been demonstrated with an X-ray Talbot interferometer using white synchrotron radiation. We report the experimental results of high-speed X-ray phase tomography with fringe-scanning method instead of Fourier-transform method to improve spatial resolution without a considerable increase of scan time. To apply fringe-scanning method to high speed tomography, we tested a scan that is a synchronous combination of one-way continuous movements of the sample rotation and the grating displacement. When this scanning method was combined with X-ray phase tomography, we were able to obtain a scan time of 5 s. A comparison of the image quality derived with the conventional approach and with the proposed approach using the fringe-scanning method showed that the latter had better spatial resolution.

Images of the Self and Self-Esteem: Do Positive Self-Images Improve Self-Esteem in Social Anxiety?

Science.gov (United States)

Hulme, Natalie; Hirsch, Colette; Stopa, Lusia

2012-01-01

Negative self-images play an important role in maintaining social anxiety disorder. We propose that these images represent the working self in a Self-Memory System that regulates retrieval of self-relevant information in particular situations. Self-esteem, one aspect of the working self, comprises explicit (conscious) and implicit (automatic) components. Implicit self-esteem reflects an automatic evaluative bias towards the self that is normally positive, but is reduced in socially anxious individuals. Forty-four high and 44 low socially anxious participants generated either a positive or a negative self-image and then completed measures of implicit and explicit self-esteem. Participants who held a negative self-image in mind reported lower implicit and explicit positive self-esteem, and higher explicit negative self-esteem than participants holding a positive image in mind, irrespective of social anxiety group. We then tested whether positive self-images protected high and low socially anxious individuals equally well against the threat to explicit self-esteem posed by social exclusion in a virtual ball toss game (Cyberball). We failed to find a predicted interaction between social anxiety and image condition. Instead, all participants holding positive self-images reported higher levels of explicit self-esteem after Cyberball than those holding negative self-images. Deliberate retrieval of positive self-images appears to facilitate access to a healthy positive implicit bias, as well as improving explicit self-esteem, whereas deliberate retrieval of negative self-images does the opposite. This is consistent with the idea that negative self-images may have a causal, as well as a maintaining, role in social anxiety disorder. PMID:22439697

The grating projection system: a laser light pattern projection technique for long distance illumination based on the Talbot effect

International Nuclear Information System (INIS)

Castagner, J L; Jones, A R

2003-01-01

Inspired by the Talbot effect, a grating projection system was designed. Periodic patterns were produced from a projection of a diffraction grating illuminated by a spherical wave of monochromatic coherent light. The diffracted light was collimated by a lens, the focal distance of which was at the centre of the incident spherical wave. Experiments demonstrated that the diffracted orders were also spherical waves centred on the same transverse plane as the incident light. The periodic illumination observed at different locations along the optic axis was proven to be the result of interference between the diffracted orders. It was demonstrated that this system could be used to measure velocities up to 20 m s -1 of particles crossing the fringes at distances up to 3 m

Coherent addition of high power broad-area laser diodes with a compact VBG V-shaped external Talbot cavity

Science.gov (United States)

Liu, Bo; Braiman, Yehuda

2018-05-01

We introduced a compact V-shaped external Talbot cavity for phase locking of high power broad-area laser diodes. The length of compact cavity is ∼25 mm. Near diffraction-limit coherent addition of 10 broad-area laser diodes indicated that high quality phase locking was achieved. We measured the near-field emission mode of each individual broad-area laser diode with different feedback, such as a volume Bragg grating and a high reflection mirror. We found out that the best result of phase locking broad-area laser diodes was achieved by the compact V-shaped external Talbot cavity with volume Bragg grating feedback.

Volume Bragg grating external cavities for the passive phase locking of high-brightness diode laser arrays: theoretical and experimental study

DEFF Research Database (Denmark)

Paboeuf, David; Vijayakumar, Deepak; Jensen, Ole Bjarlin

2011-01-01

We describe the theoretical modeling of the external-cavity operation of a phase-locked array of diode lasers in two configurations, the self-imaging cavity based on the Talbot effect and the angular-filtering cavity. Complex filtering functions, such as the transmission or reflection of a volume...

Analysis of the modal behavior of an antiguide diode laser array with Talbot filter

NARCIS (Netherlands)

van Eijk, P.D.; van Eijk, Pieter D.; Reglat, Muriel; Vassilief, Georges; Krijnen, Gijsbertus J.M.; Driessen, A.; Mouthaan, A.J.

An analysis of the filtering of the array modes in a resonant optical waveguide (ROW) array of antiguides by a diffractive spatial filter (a Talbot filter) is presented. A dispersion relation is derived for the array modes, allowing the calculation of the field distribution. The filtering is

Young women's genital self-image and effects of exposure to pictures of natural vulvas.

Science.gov (United States)

Laan, Ellen; Martoredjo, Daphne K; Hesselink, Sara; Snijders, Nóinín; van Lunsen, Rik H W

2017-12-01

Many women have doubts about the normality of the physical appearance of their vulvas. This study measured genital self-image in a convenience sample of college-educated women, and assessed whether exposure to pictures of natural vulvas influenced their genital self-image. Forty-three women were either shown pictures of natural vulvas (N = 29) or pictures of neutral objects (N = 14). Genital self-image was measured before and after exposure to the pictures and two weeks later. Sexual function, sexual distress, self-esteem and trait anxiety were measured to investigate whether these factors influenced genital self-image scores after vulva picture exposure. A majority of the participants felt generally positively about their genitals. Having been exposed to pictures of natural vulvas resulted in an even more positive genital self-image, irrespective of levels of sexual function, sexual distress, self-esteem and trait anxiety. In the women who had seen the vulva pictures, the positive effect on genital self-image was still present after two weeks. The results of this study seem to indicate that even in young women with a relatively positive genital self-image, exposure to pictures of a large variety of natural vulvas positively affects genital self-image. This finding may suggest that exposure to pictures of natural vulvas may also lead to a more positive genital self-image in women who consider labiaplasty.

An extension of the talbot-ogden hydrology model to an affine multi-dimensional moisture content domain

KAUST Repository

Yu, Han; Deng, Li; Douglas, Craig

2013-01-01

The Talbot-Ogden hydrology model provides a fast mass conservative method to compute infiltration in unsaturated soils. As a replacement for a model based on Richards equation, it separates the groundwater movement into infiltration

The effect of personal grooming on self-perceived body image.

Science.gov (United States)

van Paasschen, J; Walker, S C; Phillips, N; Downing, P E; Tipper, S P

2015-02-01

Grooming behaviours, including the application of fragranced products, are thought to reflect a means of managing social impressions and self-image. Although application of deodorants has previously been shown to make individuals appear more confident to others, few studies have specifically examined the psychological effects of such rituals on the wearer. Here, we investigated how grooming behaviours affect self-perceived body image, a central component of an individual's self-image. In two separate experiments, using a psychophysical forced choice task, male and female participants with a normal Body Mass Index (BMI) indicated whether projected life-size images of their own body were bigger or smaller than their actual size. In the experimental condition, participants applied a fragranced deodorant before performing the task, whereas in the control condition, no product was applied. Our dependent measures were the point of subjective equality (PSE), the size at which participants report their body is subjectively equal to their actual body size, and the difference limen (DL), the amount of change in body size distortion necessary for it to be reliably detected. These measurements provide an index of attitudinal and perceptual components of body image, respectively. Both male and female participants who, at baseline, overestimated their body size, made significantly more accurate judgments about their body size, as measured by the PSE, following application of a fragranced deodorant or antiperspirant than they did in the control condition. This effect was seen in the absence of differences in perceptual sensitivity to changes in body size (DL) across groups and conditions. People who underestimated their body size did not show this effect. Of note, both male and female overestimators had a significantly larger BMI than underestimators. These results demonstrate that the attitudinal component of body image is malleable and can be influenced by everyday grooming

Effect of Major Depression on the Self-Image of Adolescent Boys and Girls.

Science.gov (United States)

Korhonen, Veijo; Laukkanen, Eila; Peiponen, Sirkka; Lehtonen, Johannes; Viinamaki, Heimo

2001-01-01

Studied the specific impact of major depressive disorder (MDD) on the self-image of adolescent boys and girls seeking outpatient treatment. Compared 68 adolescents with MDD and 39 with no psychiatric illness. Self-image among MDD patients was in general poorer than in the comparison group. The effect of MDD was more negative for girls than boys,…

Ideal-observer detectability in photon-counting differential phase-contrast imaging using a linear-systems approach

Energy Technology Data Exchange (ETDEWEB)

Fredenberg, Erik; Danielsson, Mats; Stayman, J. Webster; Siewerdsen, Jeffrey H.; Aslund, Magnus [Research and Development, Philips Women' s Healthcare, Smidesvaegen 5, SE-171 41 Solna, Sweden and Department of Physics, Royal Institute of Technology, AlbaNova, SE-106 91 Stockholm (Sweden); Department of Physics, Royal Institute of Technology, AlbaNova, SE-106 91 Stockholm (Sweden); Department of Biomedical Engineering, Johns Hopkins University, Baltimore, Maryland 21205 (United States); Department of Biomedical Engineering and Department of Radiology, Johns Hopkins University, Baltimore, Maryland 21205 (United States); Research and Development, Philips Women' s Healthcare, Smidesvaegen 5, SE-171 41 Solna (Sweden)

2012-09-15

Purpose: To provide a cascaded-systems framework based on the noise-power spectrum (NPS), modulation transfer function (MTF), and noise-equivalent number of quanta (NEQ) for quantitative evaluation of differential phase-contrast imaging (Talbot interferometry) in relation to conventional absorption contrast under equal-dose, equal-geometry, and, to some extent, equal-photon-economy constraints. The focus is a geometry for photon-counting mammography. Methods: Phase-contrast imaging is a promising technology that may emerge as an alternative or adjunct to conventional absorption contrast. In particular, phase contrast may increase the signal-difference-to-noise ratio compared to absorption contrast because the difference in phase shift between soft-tissue structures is often substantially larger than the absorption difference. We have developed a comprehensive cascaded-systems framework to investigate Talbot interferometry, which is a technique for differential phase-contrast imaging. Analytical expressions for the MTF and NPS were derived to calculate the NEQ and a task-specific ideal-observer detectability index under assumptions of linearity and shift invariance. Talbot interferometry was compared to absorption contrast at equal dose, and using either a plane wave or a spherical wave in a conceivable mammography geometry. The impact of source size and spectrum bandwidth was included in the framework, and the trade-off with photon economy was investigated in some detail. Wave-propagation simulations were used to verify the analytical expressions and to generate example images. Results: Talbot interferometry inherently detects the differential of the phase, which led to a maximum in NEQ at high spatial frequencies, whereas the absorption-contrast NEQ decreased monotonically with frequency. Further, phase contrast detects differences in density rather than atomic number, and the optimal imaging energy was found to be a factor of 1.7 higher than for absorption

Ideal-observer detectability in photon-counting differential phase-contrast imaging using a linear-systems approach

International Nuclear Information System (INIS)

Fredenberg, Erik; Danielsson, Mats; Stayman, J. Webster; Siewerdsen, Jeffrey H.; Åslund, Magnus

2012-01-01

Purpose: To provide a cascaded-systems framework based on the noise-power spectrum (NPS), modulation transfer function (MTF), and noise-equivalent number of quanta (NEQ) for quantitative evaluation of differential phase-contrast imaging (Talbot interferometry) in relation to conventional absorption contrast under equal-dose, equal-geometry, and, to some extent, equal-photon-economy constraints. The focus is a geometry for photon-counting mammography. Methods: Phase-contrast imaging is a promising technology that may emerge as an alternative or adjunct to conventional absorption contrast. In particular, phase contrast may increase the signal-difference-to-noise ratio compared to absorption contrast because the difference in phase shift between soft-tissue structures is often substantially larger than the absorption difference. We have developed a comprehensive cascaded-systems framework to investigate Talbot interferometry, which is a technique for differential phase-contrast imaging. Analytical expressions for the MTF and NPS were derived to calculate the NEQ and a task-specific ideal-observer detectability index under assumptions of linearity and shift invariance. Talbot interferometry was compared to absorption contrast at equal dose, and using either a plane wave or a spherical wave in a conceivable mammography geometry. The impact of source size and spectrum bandwidth was included in the framework, and the trade-off with photon economy was investigated in some detail. Wave-propagation simulations were used to verify the analytical expressions and to generate example images. Results: Talbot interferometry inherently detects the differential of the phase, which led to a maximum in NEQ at high spatial frequencies, whereas the absorption-contrast NEQ decreased monotonically with frequency. Further, phase contrast detects differences in density rather than atomic number, and the optimal imaging energy was found to be a factor of 1.7 higher than for absorption

#fitspo or #loveyourself? The impact of fitspiration and self-compassion Instagram images on women's body image, self-compassion, and mood.

Science.gov (United States)

Slater, Amy; Varsani, Neesha; Diedrichs, Phillippa C

2017-09-01

This study experimentally examined the impact of exposure to fitspiration images and self-compassion quotes on social media on young women's body satisfaction, body appreciation, self-compassion, and negative mood. Female undergraduate students (N=160) were randomly assigned to view either Instagram images of fitspiration, self-compassion quotes, a combination of both, or appearance-neutral images. Results showed no differences between viewing fitspiration images compared to viewing neutral images, except for poorer self-compassion among those who viewed fitspiration images. However, women who viewed self-compassion quotes showed greater body satisfaction, body appreciation, self-compassion, and reduced negative mood compared to women who viewed neutral images. Further, viewing a combination of fitspiration images and self-compassion quotes led to positive outcomes compared to viewing only fitspiration images. Trait levels of thin-ideal internalisation moderated some effects. The findings suggest that self-compassion might offer a novel avenue for attenuating the negative impact of social media on women's body satisfaction. Copyright © 2017 Elsevier Ltd. All rights reserved.

The effectiveness of self-compassion and self-esteem writing tasks in reducing body image concerns.

Science.gov (United States)

Seekis, Veya; Bradley, Graham L; Duffy, Amanda

2017-12-01

This study investigated whether single-session self-compassion and self-esteem writing tasks ameliorate the body image concerns evoked by a negative body image induction. Ninety-six female university students aged 17-25 years (M age =19.45, SD=1.84) were randomly assigned to one of three writing treatment groups: self-compassion, self-esteem, or control. After reading a negative body image scenario, participants completed scales measuring state body appreciation, body satisfaction, and appearance anxiety. They then undertook the assigned writing task, and completed the three measures again, both immediately post-treatment and at 2-week follow-up. The self-compassion writing group showed higher post-treatment body appreciation than the self-esteem and control groups, and higher body appreciation than the control group at follow-up. At post-treatment and follow-up, self-compassion and self-esteem writing showed higher body satisfaction than the control. The groups did not differ on appearance anxiety. Writing-based interventions, especially those that enhance self-compassion, may help alleviate certain body image concerns. Copyright © 2017 Elsevier Ltd. All rights reserved.

The effects of cosmetic surgery on body image, self-esteem, and psychological problems.

Science.gov (United States)

von Soest, T; Kvalem, I L; Roald, H E; Skolleborg, K C

2009-10-01

This study aims to investigate whether cosmetic surgery has an effect on an individual's body image, general self-esteem, and psychological problems. Further tests were conducted to assess whether the extent of psychological problems before surgery influenced improvements in postoperative psychological outcomes. Questionnaire data from 155 female cosmetic surgery patients from a plastic surgery clinic were obtained before and approximately 6 months after surgery. The questionnaire consisted of measures on body image, self-esteem, and psychological problems. Pre- and postoperative values were compared. Pre- and postoperative measures were also compared with the data compiled from a representative sample of 838 Norwegian women, aged 22-55, with no cosmetic surgery experience. No differences in psychological problems between the presurgery patient and comparison samples were found, whereas differences in body image and self-esteem between the sample groups were reported in an earlier publication. Analyses further revealed an improvement in body image (satisfaction with own appearance) after surgery. A significant but rather small effect on self-esteem was also found, whereas the level of psychological problems did not change after surgery. Postoperative measures of appearance satisfaction, self-esteem, and psychological problems did not differ from values derived from the comparison sample. Finally, few psychological problems before surgery predicted a greater improvement in appearance satisfaction and self-esteem after surgery. The study provides evidence of improvement in satisfaction with own appearance after cosmetic surgery, a variable that is thought to play a central role in understanding the psychology of cosmetic surgery patients. The study also points to the factors that surgeons should be aware of, particularly the role of psychological problems, which could inhibit the positive effects of cosmetic surgery.

Progress in coherent lithography using table-top extreme ultraviolet lasers

Science.gov (United States)

Li, Wei

Nanotechnology has drawn a wide variety of attention as interesting phenomena occurs when the dimension of the structures is in the nanometer scale. The particular characteristics of nanoscale structures had enabled new applications in different fields in science and technology. Our capability to fabricate these nanostructures routinely for sure will impact the advancement of nanoscience. Apart from the high volume manufacturing in semiconductor industry, a small-scale but reliable nanofabrication tool can dramatically help the research in the field of nanotechnology. This dissertation describes alternative extreme ultraviolet (EUV) lithography techniques which combine table-top EUV laser and various cost-effective imaging strategies. For each technique, numerical simulations, system design, experiment result and its analysis will be presented. In chapter II, a brief review of the main characteristics of table-top EUV lasers will be addressed concentrating on its high power and large coherence radius that enable the lithography application described herein. The development of a Talbot EUV lithography system which is capable of printing 50nm half pitch nanopatterns will be illustrated in chapter III. A detailed discussion of its resolution limit will be presented followed by the development of X-Y-Z positioning stage, the fabrication protocol for diffractive EUV mask, and the pattern transfer using self- developed ion beam etching, and the dose control unit. In addition, this dissertation demonstrated the capability to fabricate functional periodic nanostructures using Talbot EUV lithography. After that, resolution enhancement techniques like multiple exposure, displacement Talbot EUV lithography, fractional Talbot EUV lithography, and Talbot lithography using 18.9nm amplified spontaneous emission laser will be demonstrated. Chapter IV will describe a hybrid EUV lithography which combines the Talbot imaging and interference lithography rendering a high resolution

Self-assembled nanomaterials for photoacoustic imaging

Science.gov (United States)

Wang, Lei; Yang, Pei-Pei; Zhao, Xiao-Xiao; Wang, Hao

2016-01-01

In recent years, extensive endeavors have been paid to construct functional self-assembled nanomaterials for various applications such as catalysis, separation, energy and biomedicines. To date, different strategies have been developed for preparing nanomaterials with diversified structures and functionalities via fine tuning of self-assembled building blocks. In terms of biomedical applications, bioimaging technologies are urgently calling for high-efficient probes/contrast agents for high-performance bioimaging. Photoacoustic (PA) imaging is an emerging whole-body imaging modality offering high spatial resolution, deep penetration and high contrast in vivo. The self-assembled nanomaterials show high stability in vivo, specific tolerance to sterilization and prolonged half-life stability and desirable targeting properties, which is a kind of promising PA contrast agents for biomedical imaging. Herein, we focus on summarizing recent advances in smart self-assembled nanomaterials with NIR absorption as PA contrast agents for biomedical imaging. According to the preparation strategy of the contrast agents, the self-assembled nanomaterials are categorized into two groups, i.e., the ex situ and in situ self-assembled nanomaterials. The driving forces, assembly modes and regulation of PA properties of self-assembled nanomaterials and their applications for long-term imaging, enzyme activity detection and aggregation-induced retention (AIR) effect for diagnosis and therapy are emphasized. Finally, we conclude with an outlook towards future developments of self-assembled nanomaterials for PA imaging.

Self-assembled nanomaterials for photoacoustic imaging.

Science.gov (United States)

Wang, Lei; Yang, Pei-Pei; Zhao, Xiao-Xiao; Wang, Hao

2016-02-07

In recent years, extensive endeavors have been paid to construct functional self-assembled nanomaterials for various applications such as catalysis, separation, energy and biomedicines. To date, different strategies have been developed for preparing nanomaterials with diversified structures and functionalities via fine tuning of self-assembled building blocks. In terms of biomedical applications, bioimaging technologies are urgently calling for high-efficient probes/contrast agents for high-performance bioimaging. Photoacoustic (PA) imaging is an emerging whole-body imaging modality offering high spatial resolution, deep penetration and high contrast in vivo. The self-assembled nanomaterials show high stability in vivo, specific tolerance to sterilization and prolonged half-life stability and desirable targeting properties, which is a kind of promising PA contrast agents for biomedical imaging. Herein, we focus on summarizing recent advances in smart self-assembled nanomaterials with NIR absorption as PA contrast agents for biomedical imaging. According to the preparation strategy of the contrast agents, the self-assembled nanomaterials are categorized into two groups, i.e., the ex situ and in situ self-assembled nanomaterials. The driving forces, assembly modes and regulation of PA properties of self-assembled nanomaterials and their applications for long-term imaging, enzyme activity detection and aggregation-induced retention (AIR) effect for diagnosis and therapy are emphasized. Finally, we conclude with an outlook towards future developments of self-assembled nanomaterials for PA imaging.

Transformation of light double cones in the human retina: the origin of trichromatism, of 4D-spatiotemporal vision, and of patchwise 4D Fourier transformation in Talbot imaging

Science.gov (United States)

Lauinger, Norbert

1997-09-01

The interpretation of the 'inverted' retina of primates as an 'optoretina' (a light cones transforming diffractive cellular 3D-phase grating) integrates the functional, structural, and oscillatory aspects of a cortical layer. It is therefore relevant to consider prenatal developments as a basis of the macro- and micro-geometry of the inner eye. This geometry becomes relevant for the postnatal trichromatic synchrony organization (TSO) as well as the adaptive levels of human vision. It is shown that the functional performances, the trichromatism in photopic vision, the monocular spatiotemporal 3D- and 4D-motion detection, as well as the Fourier optical image transformation with extraction of invariances all become possible. To transform light cones into reciprocal gratings especially the spectral phase conditions in the eikonal of the geometrical optical imaging before the retinal 3D-grating become relevant first, then in the von Laue resp. reciprocal von Laue equation for 3D-grating optics inside the grating and finally in the periodicity of Talbot-2/Fresnel-planes in the near-field behind the grating. It is becoming possible to technically realize -- at least in some specific aspects -- such a cortical optoretina sensor element with its typical hexagonal-concentric structure which leads to these visual functions.

Theoretical study of ghost imaging with cold atomic waves under the condition of partial coherence

International Nuclear Information System (INIS)

Chen, Jun; Liu, Yun-Xian

2014-01-01

A matter wave ghost imaging mechanism is proposed and demonstrated theoretically. This mechanism is based on the Talbot-Lau effect. Periodic gratings of matter wave density, which appear as a result of interference of atoms diffracted by pulses of an optical standing wave, are utilized to produce the reference wave and the signal wave simultaneously for the ghost imaging. An advantage of this mechanism is that during the imaging process, the beam-splitter is not needed, which highly simplifies the experimental setup and makes the ghost imaging possible in the field of matter wave

A job-related self-image enhancement programme

OpenAIRE

2012-01-01

D.Litt. et Phil. This research focuses on self-concept improvement for adults. A self-image enhancement programme has been developed and its impact tested with regard to shortand medium term developments. Various training approaches have been compared to establish whether massed or spaced sessions training is more effective, and whether individual follow-up after the programme is of advantage. Self-image enhancement is seen as central to a person's functioning and psychological well-being....

A New Application of Dynamic Data Driven System in the Talbot-Ogden Model for Groundwater Infiltration

KAUST Repository

Yu, Han; Douglas, Craig C.; Ogden, Fred L.

2012-01-01

The TalbotOgden model is a mass conservative method to simulate flow of a wetting liquid in variably-saturated porous media. The principal feature of this model is the discretization of the moisture content domain into bins. This paper gives an analysis of the relationship between the number of bins and the computed flux. Under the circumstances of discrete bins and discontinuous wetting fronts, we show that fluxes increase with the number of bins. We then apply this analysis to the continuous case and get an upper bound of the difference of infiltration rates when the number of bins tends to infinity. We also extend this model by creating a two dimensional moisture content domain so that there exists a probability distribution of the moisture content for different soil systems. With these theoretical and experimental results and using a Dynamic Data Driven Application System (DDDAS), sensors can be put in soils to detect the infiltration fluxes, which are important to compute the proper number of bins for a specific soil system and predict fluxes. Using this feedback control loop, the extended TalbotOgden model can be made more efficient for estimating infiltration into soils.

A New Application of Dynamic Data Driven System in the Talbot-Ogden Model for Groundwater Infiltration

KAUST Repository

Yu, Han

2012-06-02

The TalbotOgden model is a mass conservative method to simulate flow of a wetting liquid in variably-saturated porous media. The principal feature of this model is the discretization of the moisture content domain into bins. This paper gives an analysis of the relationship between the number of bins and the computed flux. Under the circumstances of discrete bins and discontinuous wetting fronts, we show that fluxes increase with the number of bins. We then apply this analysis to the continuous case and get an upper bound of the difference of infiltration rates when the number of bins tends to infinity. We also extend this model by creating a two dimensional moisture content domain so that there exists a probability distribution of the moisture content for different soil systems. With these theoretical and experimental results and using a Dynamic Data Driven Application System (DDDAS), sensors can be put in soils to detect the infiltration fluxes, which are important to compute the proper number of bins for a specific soil system and predict fluxes. Using this feedback control loop, the extended TalbotOgden model can be made more efficient for estimating infiltration into soils.

Coherence revivals in two-photon frequency combs

International Nuclear Information System (INIS)

Torres-Company, Victor; Lancis, Jesus; Lajunen, Hanna; Friberg, Ari T.

2011-01-01

We describe and theoretically analyze the self-imaging Talbot effect of entangled photon pairs in the time domain. Rich phenomena are observed in coherence propagation along dispersive media of mode-locked two-photon states with frequency entanglement exhibiting a comblike correlation function. Our results can be used to remotely transfer frequency standards through optical fiber networks with two-photon light, avoiding the requirement of dispersion compensation.

The effects of hysterectomy on body image, self-esteem, and marital adjustment in Turkish women with gynecologic cancer.

Science.gov (United States)

Pinar, Gul; Okdem, Seyda; Dogan, Nevin; Buyukgonenc, Lale; Ayhan, Ali

2012-06-01

The purpose of this research was to investigate the differences in the effect of hysterectomy on body image, self-esteem, and marital adjustment in Turkish women with gynecologic cancer based on specific independent variables, including age, education, employment, having or not having children, and income. This cross-sectional study compared a group of women who underwent a hysterectomy (n = 100) with a healthy control group (n = 100). The study findings indicate that women who had a hysterectomy were found in worse conditions in terms of body image, self-esteem, and dyadic adjustment compared to healthy women. In terms of dyadic adjustment and body image among women who had undergone a hysterectomy, those with lower levels of income and education were found in poorer conditions. The study's findings show that hysterectomies have negative effects on body image, self-esteem, and dyadic adjustment in women affected by gynecologic cancer. Nursing assessment of self-esteem and marital adjustment indicators and implementation of strategies to increase self-confidence and self-esteem are needed for high-risk women.

Feasibility evaluation of a neutron grating interferometer with an analyzer grating based on a structured scintillator

Science.gov (United States)

Kim, Youngju; Kim, Jongyul; Kim, Daeseung; Hussey, Daniel. S.; Lee, Seung Wook

2018-03-01

We introduce an analyzer grating based on a structured scintillator fabricated by a gadolinium oxysulfide powder filling method for a symmetric Talbot-Lau neutron grating interferometer. This is an alternative way to analyze the Talbot self-image of a grating interferometer without using an absorption grating to block neutrons. Since the structured scintillator analyzer grating itself generates the signal for neutron detection, we do not need an additional scintillator screen as an absorption analyzer grating. We have developed and tested an analyzer grating based on a structured scintillator in our symmetric Talbot-Lau neutron grating interferometer to produce high fidelity absorption, differential phase, and dark-field contrast images. The acquired images have been compared to results of a grating interferometer utilizing a typical absorption analyzer grating with two commercial scintillation screens. The analyzer grating based on the structured scintillator enhances interference fringe visibility and shows a great potential for economical fabrication, compact system design, and so on. We report the performance of the analyzer grating based on a structured scintillator and evaluate its feasibility for the neutron grating interferometer.

Future of X-ray phase imaging in medical imaging technology

International Nuclear Information System (INIS)

Momose, Atsushi

2007-01-01

Weakly absorbing materials, such as biological, soft tissues, can be imaged by generating contrast due to the phase shift of X-rays. In the past decade, several methods for X-ray phase imaging were proposed and demonstrated. The performance of X-ray phase imaging is attractive in the field of medical imaging technology, and its development for practical use is expected. Many methods, however, have been developed under the assumption of the use of synchrotron radiation, which is an obstacle to practical use. The method based on Talbot (-Lau) interferometry enables us to use a compact X-ray source, and its development is expected as a breakthrough for medical applications. (author)

Arcsecond and Sub-arcsedond Imaging with X-ray Multi-Image Interferometer and Imager for (very) small sattelites

Science.gov (United States)

Hayashida, K.; Kawabata, T.; Nakajima, H.; Inoue, S.; Tsunemi, H.

2017-10-01

The best angular resolution of 0.5 arcsec is realized with the X-ray mirror onborad the Chandra satellite. Nevertheless, further better or comparable resolution is anticipated to be difficult in near future. In fact, the goal of ATHENA telescope is 5 arcsec in the angular resolution. We propose a new type of X-ray interferometer consisting simply of an X-ray absorption grating and an X-ray spectral imaging detector, such as X-ray CCDs or new generation CMOS detectors, by stacking the multi images created with the Talbot interferenece (Hayashida et al. 2016). This system, now we call Multi Image X-ray Interferometer Module (MIXIM) enables arcseconds resolution with very small satellites of 50cm size, and sub-arcseconds resolution with small sattellites. We have performed ground experiments, in which a micro-focus X-ray source, grating with pitch of 4.8μm, and 30 μm pixel detector placed about 1m from the source. We obtained the self-image (interferometirc fringe) of the grating for wide band pass around 10keV. This result corresponds to about 2 arcsec resolution for parrallel beam incidence. The MIXIM is usefull for high angular resolution imaging of relatively bright sources. Search for super massive black holes and resolving AGN torus would be the targets of this system.

Self-esteem threat combined with exposure to thin media images leads to body image compensatory self-enhancement.

Science.gov (United States)

Jarry, Josée L; Kossert, Amy L

2007-03-01

This study examined the effect of a self-esteem threat combined with exposure to thin images on body image (BI) satisfaction and investment. Female participants (N=94) received a self-esteem threat consisting of false failure feedback or received false success feedback on an intellectual task allegedly highly predictive of academic and professional success. They then viewed media images featuring thin models or products. After viewing thin models, women who had received failure feedback declared themselves more satisfied about their appearance and less invested in it than did women who had received success feedback. These results suggest that exposure to the thin ideal may inspire women experiencing self-esteem threats to use appearance as an alternative source of worth, thus maintaining their global esteem through BI compensatory self-enhancement. Potential long-term implications of this strategy, such as a paradoxical increase in BI investment and the development of eating pathology, are discussed.

Body image satisfaction and self-esteem in Thai female adolescents: the moderating role of self-compassion.

Science.gov (United States)

Pisitsungkagarn, Kullaya; Taephant, Nattasuda; Attasaranya, Ploychompoo

2014-01-01

Body image satisfaction significantly influences self-esteem in female adolescents. Increased reports of lowered satisfaction in this population have raised concerns regarding their compromised self-esteem. This research study, therefore, sought to identify a culturally significant moderator of the association between body image satisfaction and self-esteem in Thai female adolescents. Orientation toward self-compassion, found to be particularly high in Thailand, was examined. A total of 302 Thai female undergraduates from three large public and private universities in the Bangkok metropolitan area responded to a set of questionnaires, which measured demographic information, body image satisfaction, self-compassion, and self-esteem. Data were analyzed using correlation and multiple regression analyses. Self-compassion was tested as a moderator of the relationship between body image satisfaction and self-esteem. Although its effect was relatively small, self-compassion significantly moderated the positive relationship between body image satisfaction and self-esteem. The relationship became less stringent for those with high self-compassion. The cultivation of self-compassion was recommended in female adolescents. In addition to moderating the association between body image satisfaction and self-esteem, the benefits to health and well-being of generalizing this cultivation are discussed.

Ghost image in enhanced self-heterodyne synthetic aperture imaging ladar

Science.gov (United States)

Zhang, Guo; Sun, Jianfeng; Zhou, Yu; Lu, Zhiyong; Li, Guangyuan; Xu, Mengmeng; Zhang, Bo; Lao, Chenzhe; He, Hongyu

2018-03-01

The enhanced self-heterodyne synthetic aperture imaging ladar (SAIL) self-heterodynes two polarization-orthogonal echo signals to eliminate the phase disturbance caused by atmospheric turbulence and mechanical trembling, uses heterodyne receiver instead of self-heterodyne receiver to improve signal-to-noise ratio. The principle and structure of the enhanced self-heterodyne SAIL are presented. The imaging process of enhanced self-heterodyne SAIL for distributed target is also analyzed. In enhanced self-heterodyne SAIL, the phases of two orthogonal-polarization beams are modulated by four cylindrical lenses in transmitter to improve resolutions in orthogonal direction and travel direction, which will generate ghost image. The generation process of ghost image in enhanced self-heterodyne SAIL is mathematically detailed, and a method of eliminating ghost image is also presented, which is significant for far-distance imaging. A number of experiments of enhanced self-heterodyne SAIL for distributed target are presented, these experimental results verify the theoretical analysis of enhanced self-heterodyne SAIL. The enhanced self-heterodyne SAIL has the capability to eliminate the influence from the atmospheric turbulence and mechanical trembling, has high advantage in detecting weak signals, and has promising application for far-distance ladar imaging.

Brand Image as a Function of Self-Image and Self-Brand Connection

Directory of Open Access Journals (Sweden)

Rares MOCANU

2014-02-01

Full Text Available This study investigates how brand image relates to self-image and how brand consumption contributes to the construction of self. Most of the research on brand image refers to brand attitudes. Day (1970 considers attitudes "a central integrating feature” in marketing theory and advertising evaluation. Gardner (1985, p.197 studied differences in brand attitudes as they relate to advertisements, finding attitude toward an advertisement affects attitude toward the advertised brand as much under a brand evaluation set as under a non-brand evaluation set. The present study goes beyond Gardner's research to show why such attitudes exist as they relate to brand consumption and self-image. Erickson and Johansson (1985 also investigated product evaluations, with an analysis of surveyed beliefs, attitudes, and intentions regarding fashion brands. They concluded that price is not a significant determinant of overall attitude. This study inquires whether brand attitudes and beliefs correlate with purchase behavior in the form of self-brand connection.

30-lens interferometer for high energy x-rays

Energy Technology Data Exchange (ETDEWEB)

Lyubomirskiy, M., E-mail: lyubomir@esrf.fr; Snigireva, I., E-mail: irina@esrf.fr; Vaughan, G. [European Synchrotron Radiation facility (ESRF), CS 40220, 71, av des Martyrs, F-38043, Grenoble (France); Kohn, V. [National Research Centre “Kurchatov Institute”, 123182, Moscow (Russian Federation); Kuznetsov, S.; Yunkin, V. [Institute of Microelectronics Technology RAS, 142432, Chernogolovka (Russian Federation); Snigirev, A. [Baltic Federal University, 236041, Kaliningrad (Russian Federation)

2016-07-27

We report a hard X-ray multilens interferometer consisting of 30 parallel compound refractive lenses. Under coherent illumination each CRL creates a diffraction limited focal spot - secondary source. An overlapping of coherent beams from these sources resulting in the interference pattern which has a rich longitudinal structure in accordance with the Talbot imaging formalism. The proposed interferometer was experimentally tested at ID11 ESRF beamline for the photon energies 32 keV and 65 keV. The fundamental and fractional Talbot images were recorded with the high resolution CCD camera. An effective source size in the order of 15 µm was determined from the first Talbot image proving that the multilens interferometer can be used as a high resolution beam diagnostic tool.

The effect of education given before surgery on self-esteem and body image in women undergoing hysterectomy.

Science.gov (United States)

Yaman, Şengül; Ayaz, Sultan

2015-12-01

To evaluate the effect of information provided before surgery on the self-esteem and body image of women undergoing hysterectomy. The study had a semi-experimental design with pre-post tests. A total of 60 women were included in the study and divided into two groups, the intervention group (n=30) and control group (n=30). A questionnaire, the Rosenberg self-esteem scale, and the body image scale were used to collect data. The pre- and post-test body image scores were similar in the intervention group patients, but the post-test scores were significantly higher in the control group (pself-esteem scores were again similar in the intervention group, but the post-test scores were significantly lower in the control group (pbody image and consequently self-esteem.

The effect of education given before surgery on self-esteem and body image in women undergoing hysterectomy

Directory of Open Access Journals (Sweden)

Şengül Yaman

2015-12-01

Full Text Available Objective: To evaluate the effect of information provided before surgery on the self-esteem and body image of women undergoing hysterectomy. Materials and Methods: The study had a semi-experimental design with pre-post tests. A total of 60 women were included in the study and divided into two groups, the intervention group (n=30 and control group (n=30. A questionnaire, the Rosenberg self-esteem scale, and the body image scale were used to collect data. Results: The pre- and post-test body image scores were similar in the intervention group patients, but the post-test scores were significantly higher in the control group (p<0.05. The pre- and post-test self-esteem scores were again similar in the intervention group, but the post-test scores were significantly lower in the control group (p<0.05. Conclusion: This study revealed that health education given to patients prior to hysterectomy protects body image and consequently self-esteem.

Clothing style preference of working women related to self- image/clothing-image congruity and public self-consciousness

OpenAIRE

Park, Jae Ok

1990-01-01

The purpose of the study was to extend knowledge concerning the influence of self-image congruity and public self-consciousness on clothing behavior from the symbolic consumption perspective. Thus, relationships among the three major constructs, public self-consciousness (PSC), self-image/clothing-image congruity (actual self-congruity, ASC and ideal social-congruity, ISSC) and clothing-style preference (CSP), were examined. The five objectives that guided the study were ...

Phase Locking of Laser Diode Array by Using an Off-Axis External Talbot Cavity

International Nuclear Information System (INIS)

Su Zhou-Ping; Zhu Zhuo-Wei; Que Li-Zhi; Zhu Yun; Ji Zhi-Cheng

2012-01-01

Phase locking of a laser diode array is demonstrated experimentally by using an off-axis external Talbot cavity with a feedback plane mirror. Due to good spatial mode discrimination, the cavity does not need a spatial filter. By employing the cavity, a clear and stable far-field interference pattern can be observed when the driver current is less than 14 A. In addition, the spectral line width can be reduced to 0.8 nm. The slope efficiency of the phase-locked laser diode array is about 0.62 W/A. (fundamental areas of phenomenology(including applications))

Morfologia externa de Thyridia psidii cetoides (Rosenberg & Talbot. I. Cabeça e apêndices (Lepidoptera, Nymphalidae, Ithomiinae External morphology of Thyridia psidii cetoides (Rosenberg & Talbot. I. Cabeça e apêndices (Lepidoptera, Nymphalidae, Ithomiinae

Directory of Open Access Journals (Sweden)

Jorge Manuel Saraiva Bizarro

2003-06-01

Full Text Available A detailed study of the morphology of the head of Thyridia psidii cetoides (Rosenberg & Talbot, 1914 (Nymphalidae, Ithomiinae adults from both sexes is presented. The material was obtained at the city's plant nursery "Horto Florestal de Curitiba", Paraná, Brazil; mainly by rearing eggs and larvae collected there on Cyphomandra betacea (Canavilles Sendtner, 1845 (Solanaceae. When possible, all the results obtained were compared with those already available in the literature concerning external morphology studies pertinent to other Nymphalidae subfamilies (Brassolinae, Morphinae and Danainae.

Differential X-ray phase-contrast imaging with a grating interferometer using a laboratory X-ray micro-focus tube

Energy Technology Data Exchange (ETDEWEB)

Yoon, Kwon-Ha; Ryu, Jong-Hyun; Jung, Chang-Won [Wonkwang University School of Medicine, Iksan (Korea, Republic of); Ryu, Cheol-Woo; Kim, Young-Jo; Kwon, Young-Man [Jeonbuk Technopark, Iksan (Korea, Republic of); Park, Mi-Ran; Cho, Seung-Ryong [Korea Advanced Institute of Science and Technology, Daejeon (Korea, Republic of); Chon, Kwon-Su [Catholic University of Daegu, Gyeongsan (Korea, Republic of)

2014-12-15

X-ray phase-contrast imaging can provide images with much greater soft-tissue contrast than conventional absorption-based images. In this paper, we describe differential X-ray phase-contrast images of insect specimens that were obtained using a grating-based Talbot interferometer and a laboratory X-ray source with a spot size of a few tens of micrometers. We developed the interferometer on the basis of the wavelength, periods, and height of the gratings; the field of view depends on the size of the grating, considering the refractive index of the specimen. The phase-contrast images were acquired using phase-stepping methods. The phase contrast imaging provided a significantly enhanced soft-tissue contrast compared with the attenuation data. The contour of the sample was clearly visible because the refraction from the edges of the object was strong in the differential phase-contrast image. Our results demonstrate that a grating-based Talbot interferometer with a conventional X-ray tube may be attractive as an X-ray imaging system for generating phase images. X-ray phase imaging obviously has sufficient potential and is expected to soon be a great tool for medical diagnostics.

Differential X-ray phase-contrast imaging with a grating interferometer using a laboratory X-ray micro-focus tube

International Nuclear Information System (INIS)

Yoon, Kwon-Ha; Ryu, Jong-Hyun; Jung, Chang-Won; Ryu, Cheol-Woo; Kim, Young-Jo; Kwon, Young-Man; Park, Mi-Ran; Cho, Seung-Ryong; Chon, Kwon-Su

2014-01-01

X-ray phase-contrast imaging can provide images with much greater soft-tissue contrast than conventional absorption-based images. In this paper, we describe differential X-ray phase-contrast images of insect specimens that were obtained using a grating-based Talbot interferometer and a laboratory X-ray source with a spot size of a few tens of micrometers. We developed the interferometer on the basis of the wavelength, periods, and height of the gratings; the field of view depends on the size of the grating, considering the refractive index of the specimen. The phase-contrast images were acquired using phase-stepping methods. The phase contrast imaging provided a significantly enhanced soft-tissue contrast compared with the attenuation data. The contour of the sample was clearly visible because the refraction from the edges of the object was strong in the differential phase-contrast image. Our results demonstrate that a grating-based Talbot interferometer with a conventional X-ray tube may be attractive as an X-ray imaging system for generating phase images. X-ray phase imaging obviously has sufficient potential and is expected to soon be a great tool for medical diagnostics

Achieving desired images while avoiding undesired images: exploring the role of self-monitoring in impression management.

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Turnley, W H; Bolino, M C

2001-04-01

A study was conducted to test the hypothesis that high self-monitors more effectively manage impressions than low self-monitors do. Students in work groups indicated the extent to which they used 5 impression-management tactics over the course of a semester-long project. At the project's conclusion, students provided their perceptions of the other members of their group. The relationship between impression management and image favorability was then examined across 339 student-student dyads. The results generally suggest that high self-monitors can use impression-management tactics more effectively than can low self-monitors. In particular, high self-monitors appear to be more adept than low self-monitors at using ingratiation, self-promotion, and exemplification to achieve favorable images among their colleagues.

Self-Harm Behaviour in Adolescents: Body Image and Self-Esteem

Science.gov (United States)

Oktan, Vesile

2017-01-01

This research aimed to reveal the relationship between self-harm behaviour, body image, and self-esteem, and examined whether there was a difference between the body image and self-esteem of the adolescents who exhibited self-harm behaviour and those who did not. The study was conducted with the participation of 263 high school students--143…

Linear information retrieval method in X-ray grating-based phase contrast imaging and its interchangeability with tomographic reconstruction

Science.gov (United States)

Wu, Z.; Gao, K.; Wang, Z. L.; Shao, Q. G.; Hu, R. F.; Wei, C. X.; Zan, G. B.; Wali, F.; Luo, R. H.; Zhu, P. P.; Tian, Y. C.

2017-06-01

In X-ray grating-based phase contrast imaging, information retrieval is necessary for quantitative research, especially for phase tomography. However, numerous and repetitive processes have to be performed for tomographic reconstruction. In this paper, we report a novel information retrieval method, which enables retrieving phase and absorption information by means of a linear combination of two mutually conjugate images. Thanks to the distributive law of the multiplication as well as the commutative law and associative law of the addition, the information retrieval can be performed after tomographic reconstruction, thus simplifying the information retrieval procedure dramatically. The theoretical model of this method is established in both parallel beam geometry for Talbot interferometer and fan beam geometry for Talbot-Lau interferometer. Numerical experiments are also performed to confirm the feasibility and validity of the proposed method. In addition, we discuss its possibility in cone beam geometry and its advantages compared with other methods. Moreover, this method can also be employed in other differential phase contrast imaging methods, such as diffraction enhanced imaging, non-interferometric imaging, and edge illumination.

Huellas de luz. El arte y los experimentos de William Henry Fox Talbot (cat. exp.), Madrid, Museo Nacional Centro de Arte Reina Sofia/Aldeasa, 2001, 391 p., ill. coul., chronol., 41,75 E.

OpenAIRE

Roubert, Paul-Louis

2008-01-01

Cet ouvrage est le catalogue de la version espagnole de l'exposition marquant le bicentenaire de la naissance de W. H. Fox Talbot qui s'était tenue à Bradford au printemps 2001 puis au Museo Nacional Reina Sofia de Madrid à l'été suivant. Quelque peu éclipsé par la sortie contemporaine de l'imposant ouvrage de Larry J. Schaaf, The Photographic Art of William Henry Fox Talbot, ce catalogue constitue pourtant une excellente introduction à l'oeuvre photographique complexe et multiple de T...

Self-image and ethnic identification in South Africa.

Science.gov (United States)

Bornman, E

1999-08-01

This study examined the relationship between self-image and ethnic identification among 3 South African groups. Participants included random samples of 347 Afrikaans-speaking Whites, 113 English-speaking Whites, and 466 Blacks in urban Gauteng. Positive and negative self-image were extracted using the Rosenberg Self-Esteem Scale (M. Rosenberg, 1965). Afrikaans-speaking Whites had the most positive self-image and Blacks the most negative self-image. A positive self-image was correlated with stronger ethnic identification among Afrikaans-speaking Whites. The opposite was true for Blacks. This relationship was insignificant among English-speaking Whites. Ambivalence toward ingroup identity was persistently correlated with self-image for all groups.

Self-imagery in individuals with high body dissatisfaction: the effect of positive and negative self-imagery on aspects of the self-concept.

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Farrar, Stephanie; Stopa, Lusia; Turner, Hannah

2015-03-01

Cognitive behavioural models of eating disorders highlight low self-esteem as a maintaining factor. This study explored the impact of positive and negative self-imagery on aspects of the working self (implicit and explicit self-esteem and self-concept clarity) in individuals with high body dissatisfaction (an important aspect of eating disorders). The impact of these images on state body satisfaction and affect was also explored. A group of participants with high body dissatisfaction completed measures of explicit self-esteem, self-concept clarity, state body satisfaction and affect prior to completing a negative (n = 33) or positive (n = 33) self-imagery retrieval task. Following this they completed the baseline measures and a measure of implicit self-esteem. Holding a negative self-image in mind had a negative effect on explicit self-esteem, whilst holding a positive self-image had a beneficial effect. There were no effects of imagery on implicit self-esteem. Holding a negative image in mind led to a significant reduction in self-concept clarity; however, positive self-imagery did not affect self-concept clarity. Holding a negative self-image in mind led to a decrease in body satisfaction and state affect. The opposite was found for the positive self-imagery group. Implicit self-esteem was not measured at baseline. Imagery techniques which promote positive self-images may help improve aspects of the working self, body satisfaction and affect in individuals with high levels of body dissatisfaction. As such, these imagery techniques warrant further investigation in a clinical population. Copyright © 2014 Elsevier Ltd. All rights reserved.

Choosing face: The curse of self in profile image selection.

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White, David; Sutherland, Clare A M; Burton, Amy L

2017-01-01

People draw automatic social inferences from photos of unfamiliar faces and these first impressions are associated with important real-world outcomes. Here we examine the effect of selecting online profile images on first impressions. We model the process of profile image selection by asking participants to indicate the likelihood that images of their own face ("self-selection") and of an unfamiliar face ("other-selection") would be used as profile images on key social networking sites. Across two large Internet-based studies (n = 610), in line with predictions, image selections accentuated favorable social impressions and these impressions were aligned to the social context of the networking sites. However, contrary to predictions based on people's general expertise in self-presentation, other-selected images conferred more favorable impressions than self-selected images. We conclude that people make suboptimal choices when selecting their own profile pictures, such that self-perception places important limits on facial first impressions formed by others. These results underscore the dynamic nature of person perception in real-world contexts.

[Drug users' quality of life, self-esteem and self-image].

Science.gov (United States)

Silveira, Camila da; Meyer, Carolina; Souza, Gabriel Renaldo de; Ramos, Manoella de Oliveira; Souza, Melissa de Carvalho; Monte, Fernanda Guidarini; Guimarães, Adriana Coutinho de Azevedo; Parcias, Sílvia Rosane

2013-07-01

This cross-sectional study aimed to investigate the quality of life, self-esteem and self-image among drug users of São José Institute in São José in the State of Santa Catarina. The accessibility sample was comprised of 100 male patients with a mean age of 43.0 ± 10.7, who had studied for a mean period of 8.4 ± 3.7 years. 48% of them were married and had been hospitalized or treated for a minimum period of seven days. When the participants were not hospitalized they lived with wives and children (23%), were married (48%), employed (72%), were part of income level B (58%), had done something they regret in their lives (57%) and perceived their health as good (57%). Regarding quality of life, the highest scores were found in the environmental domain (65%) and the lowest scores were in the psychological domain (58%). All patients were taking medication and had low self-esteem and self-image (77% and 96% respectively). The absence of interference of the quality of life on self-esteem and self-image of the drug users was observed by means of logistic regression. Positive quality of life did not interfere in changes in low self-esteem and self-image of drug users.

Morfologia externa de Thyridia psidii cetoides (Rosenberg & Talbot (Lepidoptera, Nymphalidae, Ithomiinae. III. Abdome e apêndices External morphology of Thyridia psidii cetoides (Rosenberg & Talbot. III. Abdomen and appendages (Lepidoptera, Nymphalidae, Ithomiinae

Directory of Open Access Journals (Sweden)

Jorge Manuel Saraiva Bizarro

2003-12-01

Full Text Available A detailed study of the abdominal external morphology of both sexes of Thyridia psidii cetoides (Rosenberg & Talbot, 1914 is presented. The material for this research was obtained at the city's plant nursery "Horto Florestal de Curitiba", Paraná, Brazil; mainly by rearing eggs and larvae collected on Cyphomandra betacea (Canavilles Sendtner, 1845 (Solanaceae. When possible, the results obtained were compared with those already available in the literature concerning other Nymphalidae subfamilies morphology (Brassolinae, Morphinae and Danainae; the most striking feature being the asymmetrical valvae of the male and the length and faint sclerotinization of the third abdominal sternite in both sexes. A resume containing the main morphological differences to other nymphalid subfamillies, found throughout this research concerning head, thorax and abdome, is presented.

Creation and Validation of the Self-esteem/Self-image Female Sexuality (SESIFS) Questionnaire

OpenAIRE

Lordello, Maria CO; Ambrogini, Carolina C; Fanganiello, Ana L; Embiru?u, Teresa R; Zaneti, Marina M; Veloso, Laise; Piccirillo, Livia B; Crude, Bianca L; Haidar, Mauro; Silva, Ivaldo

2014-01-01

Introduction Self-esteem and self-image are psychological aspects that affect sexual function. AIMS To validate a new measurement tool that correlates the concepts of self-esteem, self-image, and sexuality. Methods A 20-question test (the self-esteem/self-image female sexuality [SESIFS] questionnaire) was created and tested on 208 women. Participants answered: Rosenberg's self-esteem scale, the female sexual quotient (FSQ), and the SESIFS questionnaire. Pearson's correlation coefficient was u...

Creation and Validation of the Self-esteem/Self-image Female Sexuality (SESIFS) Questionnaire.

Science.gov (United States)

Lordello, Maria Co; Ambrogini, Carolina C; Fanganiello, Ana L; Embiruçu, Teresa R; Zaneti, Marina M; Veloso, Laise; Piccirillo, Livia B; Crude, Bianca L; Haidar, Mauro; Silva, Ivaldo

2014-01-01

Self-esteem and self-image are psychological aspects that affect sexual function. To validate a new measurement tool that correlates the concepts of self-esteem, self-image, and sexuality. A 20-question test (the self-esteem/self-image female sexuality [SESIFS] questionnaire) was created and tested on 208 women. Participants answered: Rosenberg's self-esteem scale, the female sexual quotient (FSQ), and the SESIFS questionnaire. Pearson's correlation coefficient was used to test concurrent validity of the SESIFS against Rosenberg's self-esteem scale and the FSQ. Reliability was tested using the Cronbach's alpha coefficient. The new questionnaire had a good overall reliability (Cronbach's alpha r = 0.862, p self-esteem domain r = 0.32, p self-esteem, self-image, and sexuality domains. A new, revised version is being tested and will be presented in an upcoming publication.

Abdominoplasty and its effect on body image, self-esteem, and mental health.

Science.gov (United States)

de Brito, Maria José Azevedo; Nahas, Fábio Xerfan; Barbosa, Marcus Vinicius Jardini; Dini, Gal Moreira; Kimura, Alexandro Kenji; Farah, Andréia Bufoni; Ferreira, Lydia Masako

2010-07-01

The impact of abdominoplasty on the quality of life of abdominoplasty patients was assessed 1- and 6-months postoperatively. Forty women aged 25 to 60 years were divided into study group (25 patients who underwent abdominoplasty) and waiting-list control group (15 patients). Three questionnaires (Body Shape Questionnaire [BSQ], Rosenberg Self-Esteem Scale [RSE/UNIFESP], and Short Form 36 Health Survey Questionnaire [SF-36]) were administered to the study group (preoperatively, 1- and 6-months postoperatively) and control group (on 2 occasions 6 months apart). A significant positive impact on body image, self-esteem, and mental health was found 1- and 6-months postoperatively. Significant differences were observed in role physical, role emotional, and vitality 1-month postoperatively. In the control group, significant differences were found for vitality. There was a significant improvement in Comparative perception of body image (6-month assessment) in the study group compared with controls. Abdominoplasty improved body image, self-esteem, and mental health.

Media-portrayed idealized images, self-objectification, and eating behavior.

Science.gov (United States)

Monro, Fiona J; Huon, Gail F

2006-11-01

This study examined the effects of media-portrayed idealized images on young women's eating behavior. The study compared the effects for high and low self-objectifiers. 72 female university students participated in this experiment. Six magazine advertisements featuring idealized female models were used as the experimental stimuli, and the same six advertisements with the idealized body digitally removed became the control stimuli. Eating behavior was examined using a classic taste test that involved both sweet and savory food. Participants' restraint status was assessed. We found that total food intake after exposure was the same in the body present and absent conditions. There were also no differences between high and low self-objectifiers' total food intake. However, for the total amount of food consumed and for sweet food there were significant group by condition interaction effects. High self-objectifiers ate more food in the body present than the body absent condition. In contrast, low self-objectifiers ate more food in the body absent than in the body present condition. Restraint status was not found to moderate the relationship between exposure to idealized images the amount of food consumed. Our results indicate that exposure to media-portrayed idealized images can lead to changes in eating behavior and highlight the complexity of the association between idealized image exposure and eating behavior. These results are discussed in terms of their implications for the prevention of dieting-related disorders.

High precision locating control system based on VCM for Talbot lithography

Science.gov (United States)

Yao, Jingwei; Zhao, Lixin; Deng, Qian; Hu, Song

2016-10-01

Aiming at the high precision and efficiency requirements of Z-direction locating in Talbot lithography, a control system based on Voice Coil Motor (VCM) was designed. In this paper, we built a math model of VCM and its moving characteristic was analyzed. A double-closed loop control strategy including position loop and current loop were accomplished. The current loop was implemented by driver, in order to achieve the rapid follow of the system current. The position loop was completed by the digital signal processor (DSP) and the position feedback was achieved by high precision linear scales. Feed forward control and position feedback Proportion Integration Differentiation (PID) control were applied in order to compensate for dynamic lag and improve the response speed of the system. And the high precision and efficiency of the system were verified by simulation and experiments. The results demonstrated that the performance of Z-direction gantry was obviously improved, having high precision, quick responses, strong real-time and easily to expend for higher precision.

Accuracy and effectiveness of self-gating signals in free-breathing three-dimensional cardiac cine magnetic resonance imaging

International Nuclear Information System (INIS)

Li Shuo; Gao Song; Wang Lei; Zhu Yan-Chun; Yang Jie; Xie Yao-Qin; Fu Nan; Wang Yi

2016-01-01

Conventional multiple breath-hold two-dimensional (2D) balanced steady-state free precession (SSFP) presents many difficulties in cardiac cine magnetic resonance imaging (MRI). Recently, a self-gated free-breathing three-dimensional (3D) SSFP technique has been proposed as an alternative in many studies. However, the accuracy and effectiveness of self-gating signals have been barely studied before. Since self-gating signals are crucially important in image reconstruction, a systematic study of self-gating signals and comparison with external monitored signals are needed.Previously developed self-gated free-breathing 3D SSFP techniques are used on twenty-eight healthy volunteers. Both electrocardiographic (ECG) and respiratory bellow signals are also acquired during the scan as external signals. Self-gating signal and external signal are compared by trigger and gating window. Gating window is proposed to evaluate the accuracy and effectiveness of respiratory self-gating signal. Relative deviation of the trigger and root-mean-square-deviation of the cycle duration are calculated. A two-tailed paired t-test is used to identify the difference between self-gating and external signals. A Wilcoxon signed rank test is used to identify the difference between peak and valley self-gating triggers.The results demonstrate an excellent correlation ( P = 0, R > 0.99) between self-gating and external triggers. Wilcoxon signed rank test shows that there is no significant difference between peak and valley self-gating triggers for both cardiac ( H = 0, P > 0.10) and respiratory ( H = 0, P > 0.44) motions. The difference between self-gating and externally monitored signals is not significant (two-tailed paired-sample t-test: H = 0, P > 0.90).The self-gating signals could demonstrate cardiac and respiratory motion accurately and effectively as ECG and respiratory bellow. The difference between the two methods is not significant and can be explained. Furthermore, few ECG trigger errors

Creation and Validation of the Self-esteem/Self-image Female Sexuality (SESIFS Questionnaire

Directory of Open Access Journals (Sweden)

Maria C.O. Lordello

2014-01-01

Full Text Available Introduction Self-esteem and self-image are psychological aspects that affect sexual function. AIMS To validate a new measurement tool that correlates the concepts of self-esteem, self-image, and sexuality. Methods A 20-question test (the self-esteem/self-image female sexuality [SESIFS] questionnaire was created and tested on 208 women. Participants answered: Rosenberg's self-esteem scale, the female sexual quotient (FSQ, and the SESIFS questionnaire. Pearson's correlation coefficient was used to test concurrent validity of the SESIFS against Rosenberg's self-esteem scale and the FSQ. Reliability was tested using the Cronbach's alpha coefficient. Result The new questionnaire had a good overall reliability (Cronbach's alpha r = 0.862, p < 0.001, but the sexual domain scored lower than expected ( r = 0.65. The validity was good: overall score r = 0.38, p < 0.001, self-esteem domain r = 0.32, p < 0.001, self-image domain r = 0.31, p < 0.001, sexual domain r = 0.29, p < 0.001. Conclusions The SESIFS questionnaire has limitations in measuring the correlation among self-esteem, self-image, and sexuality domains. A new, revised version is being tested and will be presented in an upcoming publication.

Hard-x-ray phase-imaging microscopy using the self-imaging phenomenon of a transmission grating

International Nuclear Information System (INIS)

Yashiro, Wataru; Harasse, Sebastien; Momose, Atsushi; Takeuchi, Akihisa; Suzuki, Yoshio

2010-01-01

We report on a hard-x-ray imaging microscope consisting of a lens, a sample, and a transmission grating. After the theoretical framework of self-imaging phenomenon by the grating in the system is presented, equations for the electric field on the image plane are derived for ideal and real lenses and an equation for the intensity on the image plane for partially coherent illumination is derived. The equations are simple and similar to those applying to a projection microscope consisting of a transmission grating except that there is no defocusing effect, regardless of whether the grating is in front of or behind the lens. This means that x-ray phase-imaging microscopy can be done without the defocusing effect. It is also shown that, by resolving the self-image on the image plane, high-sensitive x-ray phase-imaging microscopy can be attained without degradation in the spatial resolution due to diffraction by the grating. Experimental results obtained using partially coherent illumination from a synchrotron x-ray source confirm that hard-x-ray phase-imaging microscopy can be quantitatively performed with high sensitivity and without the spatial resolution degradation.

X-ray directional dark-field contrast for sub-pixel resolution imaging of bone microstructures

Energy Technology Data Exchange (ETDEWEB)

Biernath, Thomas; Malecki, Andreas; Potdevin, Guillaume; Bech, Martin; Pfeiffer, Franz [Department of Physics (E17) and Institute of Medical Engineering (IMETUM), Technische Universitaet Muenchen (Germany); Jensen, Torben [Niels Bohr Institute, University of Copenhagen (Denmark)

2011-07-01

The basic principles of X-ray image formation in radiography have remained essentially unchanged since Roentgen first discovered X-rays over a hundred years ago. The conventional approach relies on X-ray absorption as the sole source of contrast and thus gives an information about the density changes in the sample. The recently introduced X-ray dark field imaging technique (DFI) yields a fundamentally different signal: DFI is a measure of the sample small angle scattering signal and thus yields information about the sample microstructure. Such measurements can be effectively performed thanks to a Laue-Talbot grating interferometer. This presentation shows recent experimental directional dark-field imaging results of various samples both from synchrotron and classical X-ray tube sources.

Image Fusion Based on the Self-Organizing Feature Map Neural Networks

Institute of Scientific and Technical Information of China (English)

ZHANG Zhaoli; SUN Shenghe

2001-01-01

This paper presents a new image datafusion scheme based on the self-organizing featuremap (SOFM) neural networks.The scheme consists ofthree steps:(1) pre-processing of the images,whereweighted median filtering removes part of the noisecomponents corrupting the image,(2) pixel clusteringfor each image using two-dimensional self-organizingfeature map neural networks,and (3) fusion of the im-ages obtained in Step (2) utilizing fuzzy logic,whichsuppresses the residual noise components and thusfurther improves the image quality.It proves thatsuch a three-step combination offers an impressive ef-fectiveness and performance improvement,which isconfirmed by simulations involving three image sen-sors (each of which has a different noise structure).

Curricular Treatment of Body Image, Self-Esteem and Self-Concept in Spain

Science.gov (United States)

Rodríguez, Antonio V.; Estévez, Manuel; Palomares, Juan

2015-01-01

Adolescence is a period of human development in which problems with the perception of body image, self-esteem and self-concept proliferate, while the child is studying for Secondary Education. This study analyses the curricular treatment given to body image, self-esteem and self-concept in different legislative elements in the region of Valencia…

Effectiveness of Cognitive Behavioral Group Intervention on Body Image Improving and Increasing Self-Esteem in Women with Breast Cancer after Mastectomy

Directory of Open Access Journals (Sweden)

Ahmad Izadi-Ajirlo

2013-01-01

Full Text Available Objective: This study was conducted to improve the body image and self-esteem among breast cancer patients after mastectomy. Materials & Methods: Our study comprised of 23 breast cancer patients in Imam Hossein Hospital, aged between 30-60 years, all of whom had undergone mastectomy and then radiotherapy. The study participants were selected through purposeful sampling and then randomly assigned to the case (10 and control (13 groups. The intervention program (cognitive behavioral group intervention consisted of 12 sessions of intervention (2 sessions per week each taking 90 minutes, in a 6 week process. Both group members completed the “body image and relationships scale” and the “Pope self- esteem questionnaire” before and after training. Analysis of covariance to eliminate the pretest effect on posttest results and ANOVA to determine the differences between the groups were used through SPSS 18 in this study. Results: This intervention was significantly effective on improving the mean score of body image and self- esteem in the breast cancer/mastectomy patients of the case group compared to that of the control group (P<0.01. Conclusion: Thus, cognitive behavioral group intervention can be effective in improving body image and increasing self-esteem among women with breast cancer after mastectomy.

Acoustic multimode interference and self-imaging phenomena realized in multimodal phononic crystal waveguides

International Nuclear Information System (INIS)

Zou, Qiushun; Yu, Tianbao; Liu, Jiangtao; Wang, Tongbiao; Liao, Qinghua; Liu, Nianhua

2015-01-01

We report an acoustic multimode interference effect and self-imaging phenomena in an acoustic multimode waveguide system which consists of M parallel phononic crystal waveguides (M-PnCWs). Results show that the self-imaging principle remains applicable for acoustic waveguides just as it does for optical multimode waveguides. To achieve the dispersions and replicas of the input acoustic waves produced along the propagation direction, we performed the finite element method on M-PnCWs, which support M guided modes within the target frequency range. The simulation results show that single images (including direct and mirrored images) and N-fold images (N is an integer) are identified along the propagation direction with asymmetric and symmetric incidence discussed separately. The simulated positions of the replicas agree well with the calculated values that are theoretically decided by self-imaging conditions based on the guided mode propagation analysis. Moreover, the potential applications based on this self-imaging effect for acoustic wavelength de-multiplexing and beam splitting in the acoustic field are also presented. (paper)

Family Perceptions of Adolescent Self-Image.

Science.gov (United States)

Offer, Daniel; And Others

1982-01-01

Relationships between adolescents' self-image and perceptions of these adolescents held by their parents indicated that parents accurately perceive their adolescent children's self-image. Results further showed that mother-father agreement is associated with positive adolescent attitudes toward family and vocational/educational goals. (Author/PN)

The effect of "in favor of myself": preventive program to enhance positive self and body image among adolescents.

Science.gov (United States)

Golan, Moria; Hagay, Noaa; Tamir, Snait

2013-01-01

Positive self-esteem, emotional well-being, school achievements and family connectedness are considered protective factors against health-compromising behaviors. This study examined the effect of an interactive, community-based, media literacy and dissonance wellness program, In Favor of Myself, on the self-image, body image, eating attitudes and behavior of young adolescents. A preliminary cohort study was conducted among 972 program participants who did not take part in the controlled trial. Over 75% of participants said they would recommend the program to their friends. A controlled trial was conducted to evaluate program acceptability, efficacy and effectiveness among 259 participants (210 in the intervention group and 49 in the control group), aged 12-14 years, who completed questionnaires during at least two assessment times. Program materials were provided, along with leaders' training, in order to ensure quality program delivery and creation of a wide network of committed program leaders. The program significantly reduced drive for thinness and self-worth contingent upon others' approval, the gap between current body figure and ideal figure, and the impact of mood on girls' self-image. Superiority was found among those participating in the intervention group with respect to recognizing media strategies, the influence of media on desire to change, and the influence of appearance on self-confidence and drive for thinness. In Favor of Myself shows promising results for strengthening adolescents' ability to cope with the challenges of their life stage. Suggestions for improving In Favor of Myself are presented.

Body Image, Self-esteem, and Quality of Life in Patients with Psoriasis.

Science.gov (United States)

Nazik, Hulya; Nazik, Selcuk; Gul, Feride C

2017-01-01

Psoriasis is a chronic inflammatory disease of the skin that may affect the visible areas of body. Hence, the quality of life, self-esteem, and body image can be affected in psoriasis patients. We aimed in the present study to assess the effects of psoriasis on the quality of life, self-esteem, and body image. The study included 92 patients with psoriasis, along with 98 control participants. The sociodemographic characteristics of the patients were assessed, their Psoriasis Area Severity Index (PASI) scores were calculated to determine the clinical severity of the psoriasis, and the values were recorded. In addition, Dermatology Life Quality Index (DLQI), Body Image Scale, and Rosenberg Self-Esteem Scale results were evaluated. When the control and psoriasis groups were evaluated regarding the DLQI, self-esteem, and body image, quality of life was found to be more negatively affected in the psoriasis group than the controls, which was statistically significant ( P self-esteem ( P self-esteem ( P self-esteem ( r = 0.448), however, it was negatively correlated with the body image ( r = -0.423). Psoriasis may negatively affect quality of life, self-esteem, and body image, and may also cause psychosocial problems. An assessment of new approaches on this issue may contribute to developments in the treatment of and rehabilitation from this disease.

Coherence properties of blackbody radiation and application to energy harvesting and imaging with nanoscale rectennas

Science.gov (United States)

Lerner, Peter B.; Cutler, Paul H.; Miskovsky, Nicholas M.

2015-01-01

Modern technology allows the fabrication of antennas with a characteristic size comparable to the electromagnetic wavelength in the optical region. This has led to the development of new technologies using nanoscale rectifying antennas (rectennas) for solar energy conversion and sensing of terahertz, infrared, and visible radiation. For example, a rectenna array can collect incident radiation from an emitting source and the resulting conversion efficiency and operating characteristics of the device will depend on the spatial and temporal coherence properties of the absorbed radiation. For solar radiation, the intercepted radiation by a micro- or nanoscale array of devices has a relatively narrow spatial and angular distribution. Using the Van Cittert-Zernike theorem, we show that the coherence length (or radius) of solar radiation on an antenna array is, or can be, tens of times larger than the characteristic wavelength of the solar spectrum, i.e., the thermal wavelength, λT=2πℏc/(kBT), which for T=5000 K is about 3 μm. Such an effect is advantageous, making possible the rectification of solar radiation with nanoscale rectenna arrays, whose size is commensurate with the coherence length. Furthermore, we examine the blackbody radiation emitted from an array of antennas at temperature T, which can be quasicoherent and lead to a modified self-image, analogous to the Talbot-Lau self-imaging process but with thermal rather than monochromatic radiation. The self-emitted thermal radiation may be important as a nondestructive means for quality control of the array.

Iranian nurses self-perception -- factors influencing nursing image.

Science.gov (United States)

Varaei, Shokoh; Vaismoradi, Mojtaba; Jasper, Melanie; Faghihzadeh, Soghrat

2012-05-01

The purpose of this study was to describe the perspectives of Iranian nurses regarding factors influencing nursing image. Nursing image is closely tied to the nurse's role and identity, influencing clinical performance, job satisfaction and quality of care. Images of nursing and nurses are closely linked to the cultural context in which nursing is practised, hence, this study explores how Iranian nurses perceive the factors that influence their own image. A descriptive study using a survey design was conducted with 220 baccalaureate qualified nurses working in four teaching hospitals in an urban area of Iran. A Nursing Image Questionnaire was used and analysed using descriptive and inferential statistics. In the domains of 'characteristics required for entry to work', 'social role characteristics of nursing' and 'prestige, economic and social status, and self image' the nurses had negative images. 'Reward' and 'opportunity for creativity and originality' were factors that least influenced choosing nursing as a career. The presence of a nurse in the family and working in the hospital had the greatest impact on the establishment of nurses' nursing image. Improving the nursing profession's prestige and social position as well as providing the opportunity for creativity and originality in nursing practice will change the self-image of Iranian nurses, facilitating effective and lasting changes in nursing's image. Nurse managers are well-placed to influence nurses' perceptions of nursing's image. Given the finding that thinking about leaving a job positively correlates with holding a negative nursing image, nurse managers need to consider how they can work effectively with their staff to enhance morale and nurses' experience of their job. © 2012 Blackwell Publishing Ltd.

Exercise activity and self-image/self-esteem in nursing home residents

Directory of Open Access Journals (Sweden)

Lúcia Takase Gonçalves

2003-12-01

Full Text Available This study discusses the effects on the self-image/self-esteem of institutionalized elderly people of a program of systematic physical exercises. The elderly people that participated in this study live at SEOVE (the nursing home studied in Florianópolis, Brazil. They were divided into two groups, an experimental group (n = 15 and a control group (n = 12 and underwent a pre-test. The experimental group followed a program of physical exercise with a frequency of 3 60-minute sessions per week for a period of 5 months. At the end of this period a post-test was applied to both groups. The Steglich (1978 questionnaire was used to evaluate the self-image/self-esteem. Differences were observed between pre-test and post-test data for the experimental and control groups’ self-image/self-esteem. After exposure to the program of systematic physical exercise, nursing home residents exhibited signifi cant differences in self-esteem between the experimental group and the self-image control group. RESUMO O estudo teve como objetivo verifi car os efeitos da implementação de um programa de exercício físicos sistemáticos sobre a auto-imagem e auto-estima em idosos nstitucionalizados. A amostra foi constituída por idosas da Sociedade Espirita Obreiros da Vida Eterna-SEOVE, em Florianópolis, SC, sendo dividida em dois grupos: experimental (n=15 e controle (n=12. Foi aplicado um pré teste para ambos os grupos. A autoimagem e auto-estima foi determinada por meio da aplicação do questionário proposto por Steglich (1978. O grupo experimental foi submetido a um programa de exercício físico durante cinco meses (70 sessões com três sessões semanais de 60 min. Após o programa foi aplicado o pós teste para ambos os grupos. Como resultado verifi cou-se correlação positiva moderada (r=0,48 entre a diferença do pré e pós-teste da autoimagem e auto-estima no grupo experimental sobre o controle. Considerando o exposto, o programa de exercício f

#fitspo or #loveyourself? The impact of fitspiration and self-compassion Instagram images on women’s body image, self-compassion, and mood

OpenAIRE

Slater, A.; Varsani, N.; Diedrichs, P. C.

2017-01-01

This study experimentally examined the impact of exposure to fitspiration images and self-compassion quotes on social media on young women’s body satisfaction, body appreciation, self-compassion, and negative mood. Female undergraduate students (N = 160) were randomly assigned to view either Instagram images of fitspiration, self-compassion quotes, a combination of both, or appearance-neutral images. Results showed no differences between viewing fitspiration images compared to viewing neutral...

Gender and age variations in the self-image of Jamaican adolescents.

Science.gov (United States)

Smith, D E; Muenchen, R A

1995-01-01

The purpose of the study was to investigate the relationships among gender, age, and self-image of adolescents attending three secondary schools in Jamaica. The relatively few studies that have been done regarding self-perceptions of these youth are not only dated but have utilized a unidimensional conceptualization of the self. The Offer Self-Image Questionnaire which employs a multidimensional construct of the self was administered to a sample of 174 Jamaican adolescents ranging in age from 14 to 18 years (M = 15.90 years, SD = 1.21). Results revealed statistically significant effects for both gender and age. Gender was found to be significant on one self-image dimension: Morals, while age differences were evident on six dimensions: Social Relationships, Morals, Sexual Attitudes, Mastery of the External World, Vocational and Educational Goals, and Emotional Health. The results in some instances were contrary to those of past research. Discussion focused on cultural socialization and other factors affecting youth in Jamaican society.

Spherical aberration compensation method for long focal-length measurement based on Talbot interferometry

Science.gov (United States)

Luo, Yupeng; Huang, Xiao; Bai, Jian; Du, Juan; Liu, Qun; Luo, Yujie; Luo, Jia

2017-08-01

Large-aperture and long focal-length lens is widely used in high energy laser system. The method based on Talbot interferometry is a reliable method to measure the focal length of such elements. By employing divergent beam and two gratings of different periods, this method could realize full-aperture measurement, higher accuracy and better repeatability. However, it does not take into account the spherical aberration of the measured lens resulting in the moiré fringes bending, which will introduce measurement error. Furthermore, in long-focal measurement with divergent beam, this error is an important factor affecting the measurement accuracy. In this paper, we propose a new spherical aberration compensation method, which could significantly reduce the measurement error. Characterized by central-symmetric scanning window, the proposed method is based on the relationship between spherical aberration and the lens aperture. Angle data of moiré fringes in each scanning window is retrieved by Fourier analysis and statistically fitted to estimate a globally optimum value for spherical-aberration-free focal length calculation. Simulation and experiment have been carried out. Compared to the previous work, the proposed method is able to reduce the relative measurement error by 50%. The effect of scanning window size and shift step length on the results is also discussed.

Body image and self-esteem in somatizing patients.

Science.gov (United States)

Sertoz, Ozen O; Doganavsargil, Ozge; Elbi, Hayriye

2009-08-01

The aim of the present study was to determine dissatisfaction with body appearance and bodily functions and to assess self-esteem in somatizing patients. Body image and self-esteem were investigated in 128 women; 34 of those had diagnosed somatoform disorders, 50 were breast cancer patients with total mastectomy surgery alone, and 44 were healthy subjects. Body image and self-esteem were assessed using the Body Cathexis Scale and Rosenberg Self-Esteem Scale. The two clinical groups did not differ from one another (z = -1.832, P = 0.067), but differed from healthy controls in terms of body image (somatizing patients vs healthy controls, z = -3.628, P self-esteem (z = -0.936, P = 0.349) when depressive symptoms were controlled. No statistically significant difference was observed between total mastectomy patients and healthy controls in terms of self-esteem (z = -1.727, P = 0.084). The lower levels of self-esteem in somatizing patients were largely mediated by depressive symptoms. Depressed and non-depressed somatizing patients differed significantly from healthy controls with respect to their self-esteem and body image. Somatizing patients who were dissatisfied with their bodily functions and appearance had lower levels of self-esteem and high comorbidity of depression. In clinical practice it is suggested that clinicians should take into account psychiatric comorbidity, self-esteem, and body image in somatizing patients when planning treatment approaches.

Energy weighted x-ray dark-field imaging.

Science.gov (United States)

Pelzer, Georg; Zang, Andrea; Anton, Gisela; Bayer, Florian; Horn, Florian; Kraus, Manuel; Rieger, Jens; Ritter, Andre; Wandner, Johannes; Weber, Thomas; Fauler, Alex; Fiederle, Michael; Wong, Winnie S; Campbell, Michael; Meiser, Jan; Meyer, Pascal; Mohr, Jürgen; Michel, Thilo

2014-10-06

The dark-field image obtained in grating-based x-ray phase-contrast imaging can provide information about the objects' microstructures on a scale smaller than the pixel size even with low geometric magnification. In this publication we demonstrate that the dark-field image quality can be enhanced with an energy-resolving pixel detector. Energy-resolved x-ray dark-field images were acquired with a 16-energy-channel photon-counting pixel detector with a 1 mm thick CdTe sensor in a Talbot-Lau x-ray interferometer. A method for contrast-noise-ratio (CNR) enhancement is proposed and validated experimentally. In measurements, a CNR improvement by a factor of 1.14 was obtained. This is equivalent to a possible radiation dose reduction of 23%.

Self-image and self-esteem in African-American preteen girls: implications for mental health.

Science.gov (United States)

Doswell, W M; Millor, G K; Thompson, H; Braxter, B

1998-01-01

Current research suggests that pubertal development is occurring earlier in African-American preteen girls in response to familial contextual factors, which may make them vulnerable to low self-image and self-esteem dissatisfaction. This lowering in self-image and self-esteem may contribute to the early initiation of sexual behaviors, putting these girls at risk for pregnancy and sexually transmitted diseases. These potential risks place these girls in need of prepubertal health promotion, yet preadolescents are not frequently a focus of nursing care delivery except when summer camp and back-to-school physicals are performed. This article presents an in-depth overview of selected literature on self-esteem, discusses findings on self-image and self-esteem from a pilot study on pubertal influences on accelerated sexual behavior, and proposes health promotion strategies for pre- and peripubertal girls to promote positive mental health outcomes. More focused attention is needed on health promotion targeting the developmental transition health needs of prepubertal girls. Targeted health promotion activities may foster healthier pre- and peripubertal girls' perceptions of the meaning of their pubertal physical changes and stronger self-image and self-esteem. The goal of these health promotion activities should be to foster continuity of positive self-image and self-esteem among preteen girls, which is essential to prevent initiation of premature-for-age risk of problem behavior, such as early coitus.

Relationship between anger regulation and self-image inelderly people

Directory of Open Access Journals (Sweden)

Bernarda Bereza

2013-12-01

Full Text Available Aim: The picture of elderly people, narrowly understood, tends to be quite explicitly associated, namely as either embittered, grumpy, tyrannizing their family and friends, emotionally unstable or active, gentle and kind. Meanwhile, like in the case of people from younger age groups, the typology of elderly people is slightly more varied, including their way of regulating experienced emotions. The aim of the article was the search for the specificity of anger regulation and the connection between the techniques of anger regulation and self-image in elderly people. Based on Bentovim’s theory, emotion regulation was understood as modulating, modifying, focusing and controlling intense excitement and experienced tension. Material and methods:The sample group consisted of 31 men (study group and 39 women (control group above 64 years of age. The study procedure had a questionnaire form and involved completing psychological tests by subjects, including Self-Expression and Control Scale – SECS (T. van Elderen et al. and the Adjective Check List – ACL (H.G. Gough, A.B. Heilbrun. Results: The groups differed significantly in terms of anger regulation and self-image. There are links between different ways of anger regulation and the real self-image. Conclusions: The way of anger regulation is significant for the self-image experienced by elderly people, while a constructive expression of anger and the effective control of this process give a chance for the optimization of the quality of life of elderly people.

Parent-Child Relations and Adolescent Self-Image Following Divorce: A 10-Year Study.

Science.gov (United States)

Dunlop, Rosemary; Burns, Ailsa; Bermingham, Suzanne

2001-01-01

Explored links between self-image, family structure (divorced or intact), parent-child relations, and gender at 3 intervals over 10 years during adolescence to early adulthood. Results suggest a consistent relationship between high parental care, low overprotective control, and better self-image scores with a stronger effect among subjects from…

The Self-Image of Physically Abused Adolescents.

Science.gov (United States)

Hjorth, Craig W.; Ostrov, Eric

1982-01-01

Physically abused and nonabused adolescents from similar backgrounds were compared via the Offer Self-Image Questionnaire. Abused adolescents were shown to feel worse in family relations, emotional stability, psychopathology, impulse control, coping skills, and overall self-image. Implications for the professional's treatment of abused children…

PHOG analysis of self-similarity in aesthetic images

Science.gov (United States)

Amirshahi, Seyed Ali; Koch, Michael; Denzler, Joachim; Redies, Christoph

2012-03-01

In recent years, there have been efforts in defining the statistical properties of aesthetic photographs and artworks using computer vision techniques. However, it is still an open question how to distinguish aesthetic from non-aesthetic images with a high recognition rate. This is possibly because aesthetic perception is influenced also by a large number of cultural variables. Nevertheless, the search for statistical properties of aesthetic images has not been futile. For example, we have shown that the radially averaged power spectrum of monochrome artworks of Western and Eastern provenance falls off according to a power law with increasing spatial frequency (1/f2 characteristics). This finding implies that this particular subset of artworks possesses a Fourier power spectrum that is self-similar across different scales of spatial resolution. Other types of aesthetic images, such as cartoons, comics and mangas also display this type of self-similarity, as do photographs of complex natural scenes. Since the human visual system is adapted to encode images of natural scenes in a particular efficient way, we have argued that artists imitate these statistics in their artworks. In support of this notion, we presented results that artists portrait human faces with the self-similar Fourier statistics of complex natural scenes although real-world photographs of faces are not self-similar. In view of these previous findings, we investigated other statistical measures of self-similarity to characterize aesthetic and non-aesthetic images. In the present work, we propose a novel measure of self-similarity that is based on the Pyramid Histogram of Oriented Gradients (PHOG). For every image, we first calculate PHOG up to pyramid level 3. The similarity between the histograms of each section at a particular level is then calculated to the parent section at the previous level (or to the histogram at the ground level). The proposed approach is tested on datasets of aesthetic and

Are Compassionate and Self-Image Goals Comparable across Cultures?

Directory of Open Access Journals (Sweden)

Kuncewicz Dariusz

2015-12-01

Full Text Available This study tested whether compassionate goals to support others and self-image goals to maintain and defend desired self-images: 1 are equivalent constructs across three cultures (U.S., Japan, Poland; 2 overlap with interdependent self-construal; and 3 predict relationships and growth measures similarly in each country. We re-analyzed data from American (n = 130 and Japanese (n = 203 students, reported in Niiya et al. (2013, along with new data from Poland (n = 246. Single and multiple group confirmatory analyses showed that the two-factor structure holds across the three cultures. Interdependence correlated with compassionate and self-image goals only in Japan. In all three samples, compassionate goals correlated with non-zero-sum belief, feeling close, growth-seeking, self-compassion, and learning from failures, whereas self-image goals correlated with defensive responses to conflicts and validation-seeking. Our results suggest that compassionate and self-image goals may serve similar functions in relationships and growth across cultures.

The Effect of “In Favor of Myself”: Preventive Program to Enhance Positive Self and Body Image among Adolescents

Science.gov (United States)

Golan, Moria; Hagay, Noaa; Tamir, Snait

2013-01-01

Background Positive self-esteem, emotional well-being, school achievements and family connectedness are considered protective factors against health-compromising behaviors. This study examined the effect of an interactive, community-based, media literacy and dissonance wellness program, In Favor of Myself, on the self-image, body image, eating attitudes and behavior of young adolescents. A preliminary cohort study was conducted among 972 program participants who did not take part in the controlled trial. Over 75% of participants said they would recommend the program to their friends. Methods A controlled trial was conducted to evaluate program acceptability, efficacy and effectiveness among 259 participants (210 in the intervention group and 49 in the control group), aged 12–14 years, who completed questionnaires during at least two assessment times. Program materials were provided, along with leaders' training, in order to ensure quality program delivery and creation of a wide network of committed program leaders. Results The program significantly reduced drive for thinness and self-worth contingent upon others' approval, the gap between current body figure and ideal figure, and the impact of mood on girls' self-image. Superiority was found among those participating in the intervention group with respect to recognizing media strategies, the influence of media on desire to change, and the influence of appearance on self-confidence and drive for thinness. Conclusions In Favor of Myself shows promising results for strengthening adolescents' ability to cope with the challenges of their life stage. Suggestions for improving In Favor of Myself are presented. PMID:24265681

A new technique of characterization of intrapixel response dedicated to astronomical detectors

International Nuclear Information System (INIS)

Ketchazo, C.; Viale, T.; Boulade, O.; Druart, G.; Moreau, V.; Mugnier, L.; Dubrueil, D.; Derelle, S.; Ronayette, S.; Guérineau, N.; Berthé, M.

2015-01-01

This paper is devoted to the presentation of a new technique of characterization of the intra-pixel sensitivity variations (IPSVs) of astronomical detectors. The IPSV is the spatial variation of the pixel response function (PRF). In the case of under-sampled instruments for high quality imaging and accurate photometry, IPSV can contribute to the instrument global error and it should be considered carefully. Our measurement technique is based in the Fourier transform (FT) approach. It consists into the sampling of the pixel transfer function (PTF) by projecting high-resolution periodic patterns onto the whole sensor without classic optics but using the self-imaging property (the Talbot effect) of a continuously self imaging grating (CSIG) illuminated by a plane wave. The PRF is determined by computing the inverse FT. Our measurement technique permits to determine the PRF with a resolution of pixel/10 (10 times Nyquist frequency)

Body image, self-esteem, and quality of life in patients with psoriasis

Directory of Open Access Journals (Sweden)

Hulya Nazik

2017-01-01

Full Text Available Background: Psoriasis is a chronic inflammatory disease of the skin that may affect the visible areas of body. Hence, the quality of life, self-esteem, and body image can be affected in psoriasis patients. Objectives: We aimed in the present study to assess the effects of psoriasis on the quality of life, self-esteem, and body image. Materials and Methods: The study included 92 patients with psoriasis, along with 98 control participants. The sociodemographic characteristics of the patients were assessed, their Psoriasis Area Severity Index (PASI scores were calculated to determine the clinical severity of the psoriasis, and the values were recorded. In addition, Dermatology Life Quality Index (DLQI, Body Image Scale, and Rosenberg Self-Esteem Scale results were evaluated. Results: When the control and psoriasis groups were evaluated regarding the DLQI, self-esteem, and body image, quality of life was found to be more negatively affected in the psoriasis group than the controls, which was statistically significant (P < 0.001, and self-esteem (P < 0.001 and body image (P < 0.001 were found to be significantly lower. Educational status significantly affected self-esteem (P < 0.001 and body image (P = 0.021, however, quality of life was not significantly affected by this parameter (P = 0.345. PASI was positively correlated with the quality of life (r = 0.703 and self-esteem (r = 0.448, however, it was negatively correlated with the body image (r = −0.423. Conclusions: Psoriasis may negatively affect quality of life, self-esteem, and body image, and may also cause psychosocial problems. An assessment of new approaches on this issue may contribute to developments in the treatment of and rehabilitation from this disease.

The impact of gender images in commercials on the self-consciousness of adolescents.

Directory of Open Access Journals (Sweden)

Lopukhova O.G.

2015-03-01

Full Text Available Television has a strong impact on gender-identity development. Theoretical analysis shows that the direct perception of different gender characteristics in advertising images has a specific impact on gender self-consciousness, primarily at the unconscious level. The purpose of our study was to uncover features of this impact. In this study, the effects of advertising images on the gender self-consciousness of teenagers were investigated. Two hypotheses were examined: (1 Perception of gender images in TV commercials has individual variability and is connected with gender features of self-consciousness (gender type of personality, gender differentiation of consciousness, the specifics of gender identification. (2 Direct perception of gender images in TV commercials has a differential influence on the transformation of verbal (cognitive and nonverbal (emotive levels of selfconsciousness. The commercials, which were for chocolate, contained different gender types of male and female images (masculine female images, androgynous images, and feminine male images; they used as stimulus materials in an experimental situation involving 61 teenagers. The contents and dynamics of gender self-consciousness in adolescents were investigated using the psychosemantic method of “multiple identifications.” We discovered that the girls’ preferences for gender images were more varied than those of the boys. Despite different variants in the gender characteristics in the advertising images, their impact on the gender self-consciousness of the adolescents consisted mostly of gender differentiation and identification with the images of their own gender. In general, in regard to the direct impact in the experimental situation, at the cognitive level, the girls revealed changes in the enhancement of gender identification with images of their gender, and the boys were characterized by the enhancement of gender differentiation. At the level of emotive evaluation, in

Body image in emerging adults: The protective role of self-compassion.

Science.gov (United States)

Rodgers, Rachel F; Franko, Debra L; Donovan, Elizabeth; Cousineau, Tara; Yates, Kayla; McGowan, Kayla; Cook, Elizabeth; Lowy, Alice S

2017-09-01

Self-compassion is thought to protect from body image concerns. However, the mechanisms of this effect remain unclear. This study examined three positive dimensions of self-compassion as moderators of the mediated relationship between perceived overweight status, appearance comparison, and appearance esteem. A sample of 232 youth aged 13-18 years, mean=18.36 (SD=1.5) years, reported on appearance esteem, appearance comparison, perceived weight status, and self-compassion dimensions including self-kindness, common humanity, and mindfulness. Among boys, mindfulness and common humanity moderated the perceived weight status to appearance comparison pathway of the mediation (ps=.01), such that this relationship was weaker among boys with higher levels of these dimensions of self-compassion. These findings were not replicated among girls. None of the self-compassion dimensions moderated the appearance comparison to appearance esteem pathway. Self-compassion dimensions that decrease the focus on the self may protect against body image concerns among boys. Copyright © 2017 Elsevier Ltd. All rights reserved.

[Perceived self-image in adolescent idiopathic scoliosis: an integrative review of the literature].

Science.gov (United States)

Carrasco, Maria Isabel Bonilla; Ruiz, Maria Carmen Solano

2014-08-01

To learn about the experiences of adolescents diagnosed with idiopathic scoliosis. Integrative review of the literature published within a specified time frame. For both sexes, the predominant clinical symptom of this condition appears to be the negative effect that the deformity exerts on perceived self-image. Quantitative studies used numerical scores to assess perceptions of body image but did not analyse emotional aspects. Patients treated surgically were found to have a better self-image than patients treated with a brace. Quality of life was improved by a reduction in the magnitude of the curve. Spinal deformity exerts a psychological effect on adolescent girls.

Accuracy and effectiveness of self-gating signals in free-breathing three-dimensional cardiac cine magnetic resonance imaging

Science.gov (United States)

Li, Shuo; Wang, Lei; Zhu, Yan-Chun; Yang, Jie; Xie, Yao-Qin; Fu, Nan; Wang, Yi; Gao, Song

2016-12-01

Conventional multiple breath-hold two-dimensional (2D) balanced steady-state free precession (SSFP) presents many difficulties in cardiac cine magnetic resonance imaging (MRI). Recently, a self-gated free-breathing three-dimensional (3D) SSFP technique has been proposed as an alternative in many studies. However, the accuracy and effectiveness of self-gating signals have been barely studied before. Since self-gating signals are crucially important in image reconstruction, a systematic study of self-gating signals and comparison with external monitored signals are needed. Previously developed self-gated free-breathing 3D SSFP techniques are used on twenty-eight healthy volunteers. Both electrocardiographic (ECG) and respiratory bellow signals are also acquired during the scan as external signals. Self-gating signal and external signal are compared by trigger and gating window. Gating window is proposed to evaluate the accuracy and effectiveness of respiratory self-gating signal. Relative deviation of the trigger and root-mean-square-deviation of the cycle duration are calculated. A two-tailed paired t-test is used to identify the difference between self-gating and external signals. A Wilcoxon signed rank test is used to identify the difference between peak and valley self-gating triggers. The results demonstrate an excellent correlation (P = 0, R > 0.99) between self-gating and external triggers. Wilcoxon signed rank test shows that there is no significant difference between peak and valley self-gating triggers for both cardiac (H = 0, P > 0.10) and respiratory (H = 0, P > 0.44) motions. The difference between self-gating and externally monitored signals is not significant (two-tailed paired-sample t-test: H = 0, P > 0.90). The self-gating signals could demonstrate cardiac and respiratory motion accurately and effectively as ECG and respiratory bellow. The difference between the two methods is not significant and can be explained. Furthermore, few ECG trigger errors

Preliminary study of ECE imaging concept for W7-X, using the Talbot effect in rectangular waveguides

Energy Technology Data Exchange (ETDEWEB)

Iglesias, Daniel; Plaum, Burkhard; Kasparek, Walter; Hirth, Thomas [IGVP, Universitaet Stuttgart (Germany); Hirsch, Matthias [Max-Planck Institut fuer Plasmaphysik, Greifswald (Germany)

2016-07-01

For spatially resolved measurements of Electron Cyclotron Emission (ECE) in W7-X, an imaging antenna based on a corrugated rectangular waveguide can be used. The imaging characteristics of the antenna allow a simultaneous operation at multiple angles and frequencies. As a result it is possible to localize a set of points inside the plasma, where the ECE can be measured without the need of mobile components facing the plasma.

Self-Similarity Superresolution for Resource-Constrained Image Sensor Node in Wireless Sensor Networks

Directory of Open Access Journals (Sweden)

Yuehai Wang

2014-01-01

Full Text Available Wireless sensor networks, in combination with image sensors, open up a grand sensing application field. It is a challenging problem to recover a high resolution (HR image from its low resolution (LR counterpart, especially for low-cost resource-constrained image sensors with limited resolution. Sparse representation-based techniques have been developed recently and increasingly to solve this ill-posed inverse problem. Most of these solutions are based on an external dictionary learned from huge image gallery, consequently needing tremendous iteration and long time to match. In this paper, we explore the self-similarity inside the image itself, and propose a new combined self-similarity superresolution (SR solution, with low computation cost and high recover performance. In the self-similarity image super resolution model (SSIR, a small size sparse dictionary is learned from the image itself by the methods such as KSVD. The most similar patch is searched and specially combined during the sparse regulation iteration. Detailed information, such as edge sharpness, is preserved more faithfully and clearly. Experiment results confirm the effectiveness and efficiency of this double self-learning method in the image super resolution.

[Generation changes of Polish adolescents self-image (cohorts 1987 versus 2001)].

Science.gov (United States)

Modrzejewska, Renata; Badura-Madej, Wanda

2010-01-01

AIM. To compare the self-image of adolescents over fifteen years in Poland (1987 versus 2001). METHODS. Participants were 1752 school students aged 16 to 17 years randomly selected from high school in Kraków (university town). Self-image was measured by the Offer Self-Image Questionnaire. MANOVA, ANOVAs and CFA were applied as statistical methods. RESULTS. Between 1987 and 2001 self-image changes toward a more positive self perceptions in 2001. Boys described themselves better on most scales. Girls score better on vocational and educational goals and superior adjustment. CONCLUSIONS. Self-image changes over time. It is influenced by macrosocial conditions. The research confirms the 5-factor model of self-image structure of the questionnaire and its intergenerational and inter-cultural stability.

Segmentation of head magnetic resonance image using self-mapping characteristic

International Nuclear Information System (INIS)

Madokoro, Hirokazu; Sato, Kazuhito; Ishii, Masaki; Kadowaki, Sakura

2004-01-01

In this paper, we proposed a segmentation method, for head magnetic resonance (MR) images. Our method used self mapping characteristic of a self-organization map (SOM), and it does not need the setting of the representative point by the operator. We considered the continuity and boundary in the brain tissues by the definition of the local block. In the evaluation experiment, we obtained the segmentation result of matching anatomical structure information. In addition, our method applied the clinical MR images, it was possible to obtain the effective and objective result for supporting the diagnosis of the brain atrophy by the doctor. (author)

[The alcoholic's self-image: a comparative study between men and women].

Science.gov (United States)

Aubry, C; Gay, M-C; Romo, L; Joffre, S

2004-01-01

Self-image is a central problem in alcoholism. Most theories about the relationships between the self-image of alcoholics and their behaviour have been derived from -clinical observations rather than empirical research. Most observations have pointed out that alcoholics are prone to underevaluation of themselves and that low self-image is the basis of much of the problem drinker's behaviour. All the research on self-image has concluded that alcoholics have a lower self-image than non-alcoholics. Some empirical research has been conducted on the self-image of alcoholics; it has, however, been carried out only a few times, restricted to small samples, and concerned with a limited number of aspects of self-image. Moreover, most of these studies are not recent, and it seems that this area of research is not well covered. Even though the hypothesis of a bad self-image in alcoholics was validated by various older studies, the representation of alcoholism has since changed. Because of this evolution, the ways in which the disease has been viewed have changed. One can question to what extent changes in society can influence the self-image of alcoholics. This question seems all the more pertinent for alcoholic women, given the evolution of the female condition since the Seventies. The objectives of this study are to evaluate the self-image of alcoholics and non-alcoholics, and to compare the self-image of male and female alcoholics. Our hypotheses are that: 1) the self-image of an alcoholic is more negative than that of a non-alcoholic, and that: 2) female alcoholics have a more negative self-image than male alcoholics. Two groups of 30 subjects each were made up: a group of alcoholics recruited in an alcohol-dependency unit and a group of non-alcoholics recruited in a public place. The comparison of socio-demographic data between the alcoholic group and the control group does not show a significant difference except for age and level of schooling. The average age of the

Design of a compact high-energy setup for x-ray phase-contrast imaging

Science.gov (United States)

Schüttler, Markus; Yaroshenko, Andre; Bech, Martin; Potdevin, Guillaume; Malecki, Andreas; Chabior, Michael; Wolf, Johannes; Tapfer, Arne; Meiser, Jan; Kunka, Danays; Amberger, Maximilian; Mohr, Jürgen; Pfeiffer, Franz

2014-03-01

The main shortcoming of conventional biomedical x-ray imaging is the weak soft-tissue contrast caused by the small differences in the absorption coefficients between different materials. This issue can be addressed by x-ray phasesensitive imaging approaches, e.g. x-ray Talbot-Lau grating interferometry. The advantage of the three-grating Talbot-Lau approach is that it allows to acquire x-ray phase-contrast and dark-field images with a conventional lab source. However, through the introduction of the grating interferometer some constraints are imposed on the setup geometry. In general, the grating pitch and the mean x-ray energy determine the setup dimensions. The minimal length of the setup increases linearly with energy and is proportional to p2, where p is the grating pitch. Thus, a high-energy (100 keV) compact grating-based setup for x-ray imaging can be realized only if gratings with aspect-ratio of approximately 300 and a pitch of 1-2 μm were available. However, production challenges limit the availability of such gratings. In this study we consider the use of non-binary phase-gratings as means of designing a more compact grating interferometer for phase-contrast imaging. We present simulation and experimental data for both monochromatic and polychromatic case. The results reveal that phase-gratings with triangular-shaped structures yield visibilities that can be used for imaging purposes at significantly shorter distances than binary gratings. This opens the possibility to design a high-energy compact setup for x-ray phase-contrast imaging. Furthermore, we discuss different techniques to achieve triangular-shaped phase-shifting structures.

Perceived self-image in adolescent idiopathic scoliosis: an integrative review of the literature

Directory of Open Access Journals (Sweden)

Maria Isabel Bonilla Carrasco

2014-08-01

Full Text Available Objective: To learn about the experiences of adolescents diagnosed with idiopathic scoliosis. Method: Integrative review of the literature published within a specified time frame. Results: For both sexes, the predominant clinical symptom of this condition appears to be the negative effect that the deformity exerts on perceived self-image. Quantitative studies used numerical scores to assess perceptions of body image but did not analyse emotional aspects. Patients treated surgically were found to have a better self-image than patients treated with a brace. Quality of life was improved by a reduction in the magnitude of the curve. Conclusion: Spinal deformity exerts a psychological effect on adolescent girls.

Body image, self-esteem, and quality of life in patients with psoriasis

OpenAIRE

Hulya Nazik; Selcuk Nazik; Feride C Gul

2017-01-01

Background: Psoriasis is a chronic inflammatory disease of the skin that may affect the visible areas of body. Hence, the quality of life, self-esteem, and body image can be affected in psoriasis patients. Objectives: We aimed in the present study to assess the effects of psoriasis on the quality of life, self-esteem, and body image. Materials and Methods: The study included 92 patients with psoriasis, along with 98 control participants. The sociodemographic characteristics of the patient...

Body image and self-esteem among adolescents undergoing an intervention targeting dietary and physical activity behaviors.

Science.gov (United States)

Huang, Jeannie S; Norman, Gregory J; Zabinski, Marion F; Calfas, Karen; Patrick, Kevin

2007-03-01

To determine the effect of a one-year intervention targeting physical activity, sedentary, and diet behaviors among adolescents on self-reported body image and self-esteem. Health promotion interventions can lead to awareness of health risk and subsequent adoption of beneficial changes in behavior. However, it is possible that interventions targeting behaviors associated with childhood obesity may also increase the likelihood of unhealthy eating and physical activity obsessions and behaviors. Body image and self-esteem were assessed for adolescents participating in the PACE+ study, a randomized controlled trial of a 1-year behavioral intervention targeting physical activity, sedentary, and dietary behaviors. The Body Dissatisfaction subscale of the Eating Disorder Inventory and Rosenberg Self-Esteem scale were used to assess body image and self-esteem, respectively, and measurements were performed at baseline, and at 6 and 12 months. Demographic characteristics and weight status of participants were also ascertained. Analysis of responses was performed via both between-group and within-group repeated measure analyses. There were 657 adolescents who completed all measurements. Body image differences were found for age, gender, and weight status at baseline, whereas self-esteem differences were demonstrated for gender, ethnicity, and weight status. There were no intervention effects on body image or self-esteem for either girls or boys. Self-esteem and body satisfaction did not worsen as a result of participating in the PACE+ intervention for either boys or girls whether or not they lost or maintained their weight or gained weight. Girls assigned to the PACE intervention who experienced weight reduction or weight maintenance at either 6 or 12 months reported improvements in body image satisfaction (p = .02) over time compared with subjects who had experienced weight gain during the 12-month study period. Adverse effects on body satisfaction and self-esteem were not

Talbot's method for the numerical inversion of Laplace transforms: an implementation for personal computers

International Nuclear Information System (INIS)

Garratt, T.J.

1989-05-01

Safety assessments of radioactive waste disposal require efficient computer models for the important processes. The present paper is based on an efficient computational technique which can be used to solve a wide variety of safety assessment models. It involves the numerical inversion of analytical solutions to the Laplace-transformed differential equations using a method proposed by Talbot. This method has been implemented on a personal computer in a user-friendly manner. The steps required to implement a particular transform and run the program are outlined. Four examples are described which illustrate the flexibility, accuracy and efficiency of the program. The improvements in computational efficiency described in this paper have application to the probabilistic safety assessment codes ESCORT and MASCOT which are currently under development. Also, it is hoped that the present work will form the basis of software for personal computers which could be used to demonstrate safety assessment procedures to a wide audience. (author)

Reciprocal effects of exercise and nutrition treatment-induced weight loss with improved body image and physical self-concept.

Science.gov (United States)

Annesi, James J; Porter, Kandice J

2015-01-01

Improvements in self-image and mood are often reported as outcomes of obesity interventions. However, they may also concurrently influence weight loss, suggesting a reciprocal effect. Although previously reported for overweight women, such relationships were untested in morbidly obese women whose psychosocial responses to treatment may be different, and health-risks greater. Women (N = 161, Meanage = 42 years) with morbid obesity (MeanBMI = 45.1 kg/m(2)) participated in a 6-month, behaviorally based physical activity and nutrition treatment. Significant within-group improvements in weight-loss behaviors (physical activity and eating), weight, body satisfaction, physical self-concept, and depression were found. After controlling for age, mediation analyses indicated that, as a result of the treatment, weight loss was both an outcome and mediator of improvements in body-areas satisfaction and physical self-concept (reciprocal effects), but not depression. Results replicated findings from women with lower degrees of overweight, and suggested that weight-loss treatments emphasize changes in self-perception.

Self-scaling minority carrier lifetime imaging using periodically modulated electroluminescence

Science.gov (United States)

Kropp, Timo; Berner, Marcel; Werner, Jürgen H.

2017-11-01

We present a straightforward self-scaling imaging technique to extract the effective minority carrier lifetime image of silicon solar cells using periodically modulated electroluminescence. This novel modulation technique overcomes main limiting factors linked to camera integration time. Our approach is based on comparing three luminescence images taken during current modulation. One image is taken while periodically injecting excess charge carriers with a pulsed current stimulation followed by an open-circuit luminescence decay. A second image with the same injection profile is taken while additionally extracting excess charge carriers at the falling edge, accelerating the luminescence decay. Both images are normalized to a steady-state image. The camera integration time is several orders of magnitude longer than the modulation period length, and no synchronization of image acquisition is needed. The intensity difference between both modulated images is used for determining a calibration factor to convert the steady-state image into the effective minority carrier lifetime image: Our modulation method enables carrier lifetime images completely independent of the image integration time. First carrier lifetime images show good agreement with data from time resolved electroluminescence.

Effects of the exposure to self- and other-referential bodies on state body image and negative affect in resistance-trained men.

Science.gov (United States)

Cordes, Martin; Vocks, Silja; Düsing, Rainer; Waldorf, Manuel

2017-06-01

Previous body image research suggests that first, exposure to body stimuli can negatively affect men's body satisfaction and second, body concerns are associated with dysfunctional gaze behavior. To date, however, the effects of self- vs. other-referential body stimuli and of gaze behavior on body image in men under exposure conditions have not been investigated. Therefore, 49 weight-trained men were presented with pictures of their own and other bodies of different builds (i.e., normal, muscular, hyper-muscular) while being eye-tracked. Participants completed pre- and post-exposure measures of body image and affect. Results indicated that one's own and the muscular body negatively affected men's body image to a comparable degree. Exposure to one's own body also led to increased negative affect. Increased attention toward disliked own body parts was associated with a more negative post-exposure body image and affect. These results suggest a crucial role of critical self-examination in maintaining body dissatisfaction. Copyright © 2017 Elsevier Ltd. All rights reserved.

The Self-Reference Effect on Memory in Early Childhood

Science.gov (United States)

Cunningham, Sheila J.; Brebner, Joanne L.; Quinn, Francis; Turk, David J.

2014-01-01

The self-reference effect in memory is the advantage for information encoded about self, relative to other people. The early development of this effect was explored here using a concrete encoding paradigm. Trials comprised presentation of a self- or other-image paired with a concrete object. In Study 1, 4- to 6-year-old children (N = 53) were…

How do nurses in palliative care perceive the concept of self-image?

Science.gov (United States)

Jeppsson, Margareth; Thomé, Bibbi

2015-09-01

Nursing research indicates that serious illness and impending death influence the individual's self-image. Few studies define what self-image means. Thus it seems to be urgent to explore how nurses in palliative care perceive the concept of self-image, to get a deeper insight into the concept's applicability in palliative care. To explore how nurses in palliative care perceive the concept of self-image. Qualitative descriptive design. In-depth interviews with 17 nurses in palliative care were analysed using phenomenography. The study gained ethical approval. The concept of self-image was perceived as both a familiar and an unfamiliar concept. Four categories of description with a gradually increasing complexity were distinguished: Identity, Self-assessment, Social function and Self-knowledge. They represent the collective understanding of the concept and are illustrated in a 'self-image map'. The identity-category emerged as the most comprehensive one and includes the understanding of 'Who I am' in a multidimensional way. The collective understanding of the concept of self-image include multi-dimensional aspects which not always were evident for the individual nurse. Thus, the concept of self-image needs to be more verbalised and reflected on if nurses are to be comfortable with it and adopt it in their caring context. The 'self-image map' can be used in this reflection to expand the understanding of the concept. If the multi-dimensional aspects of the concept self-image could be explored there are improved possibilities to make identity-promoting strategies visible and support person-centred care. © 2014 Nordic College of Caring Science.

Self-image resilience and dissonance: the role of affirmational resources.

Science.gov (United States)

Steele, C M; Spencer, S J; Lynch, M

1993-06-01

It was predicted that high self-esteem Ss (HSEs) would rationalize an esteem-threatening decision less than low self-esteem Ss (LSEs), because HSEs presumably had more favorable self-concepts with which to affirm, and thus repair, their overall sense of self-integrity. This prediction was supported in 2 experiments within the "free-choice" dissonance paradigm--one that manipulated self-esteem through personality feedback and the other that varied it through selection of HSEs and LSEs, but only when Ss were made to focus on their self-concepts. A 3rd experiment countered an alternative explanation of the results in terms of mood effects that may have accompanied the experimental manipulations. The results were discussed in terms of the following: (a) their support for a resources theory of individual differences in resilience to self-image threats--an extension of self-affirmation theory, (b) their implications for self-esteem functioning, and (c) their implications for the continuing debate over self-enhancement versus self-consistency motivation.

[Cognitive mechanisms and self-acceptance of body image].

Science.gov (United States)

Anuel, Adriana; Bracho, Angie; Brito, Nereida; Rondón, José Eduardo; Sulbarán, Dimas

2012-01-01

This research proposed to investigate the effect of an intervention program to strengthen self-acceptance (positive), and a cognitive intervention program on body image. Specifically, it is based on the idea of prevention of risk factors for eating disorders from the perspective of normalcy in the prevention of body dissatisfaction. We used a 2×2 factorial design with 120 participants of both sexes, aged between 10 and 12 years, selected by stratification. To evaluate the hypothesis, we used two-way analysis of variance. The results concluded that only the cognitive intervention program affected the dependent variable body image, maintaining its statistical significance, which is revealed both in the general two-way ANOVA and when controlling the effect of the covariates, age and sex.

Self-image and eating disorder symptoms in normal and clinical adolescents.

Science.gov (United States)

Forsén Mantilla, Emma; Bergsten, Katja; Birgegård, Andreas

2014-01-01

Eating disorders (ED) are psychiatric disorders of multifactorial origin, predominantly appearing in adolescence. Negative self-image is identified as risk factor, but the association between self-image and ED in adolescents or sex differences regarding such associations remains unclear. The study aimed to investigate the relationship between specific self-image aspects and ED symptoms in normal and clinical adolescents, including sex differences. Participants included 855 ED patients (girls=813, boys=42) and 482 normal adolescents (girls=238, boys=244), 13-15 years. Stepwise regression demonstrated strong associations between self-image and ED in normal adolescents (girls: R(2)=.31, boys: R(2)=.08), and stronger associations in patients (girls: R(2)=.64, boys: R(2)=.69). Qualitative sex differences were observed in patients. Connections between specific self-image aspects and ED have implications for clinical management of ED. The strong link between self-image variables and ED symptoms in normal girls, but not boys, is discussed in terms of the continuity-discontinuity hypothesis. Copyright © 2013 Elsevier Ltd. All rights reserved.

Body Image and Self-Esteem in Normal Weight Women.

Science.gov (United States)

Gleghorn, Alice A.; Penner, Louis A.

Research suggests that, in clinical samples, body image disturbances are related to severe eating disorders and problems with self-concept and self-esteem. There have been relatively few studies, however, which have empirically investigated the relation between body image and personality characteristics among normal women. This study investigated…

Self-imaging in first-order optical systems

NARCIS (Netherlands)

Alieva, T.; Bastiaans, M.J.; Nijhawan, O.P.; Guota, A.K.; Musla, A.K.; Singh, Kehar

1998-01-01

The structure and main properties of coherent and partially coherent optical fields that are self-reproducible under propagation through a first-order optical system are investigated. A phase space description of self-imaging in first-order optical systems is presented. The Wigner distribution

Business accomplishments, gender and entrepreneurial self-image

NARCIS (Netherlands)

A.R. Thurik (Roy); I. Verheul (Ingrid); L.M. Uhlaner (Lorraine)

2003-01-01

textabstractDrawing on Bem’s psychological theory of self-perception, this paper presents and tests a model that examines the impact of business accomplishments and gender on entrepreneurial self-image and explores the definition of entrepreneurship according to Vesper’s Entrepreneurial Typology.

THE STRUCTURE OF A SELF-GRAVITATING PROTOPLANETARY DISK AND ITS IMPLICATIONS FOR DIRECT IMAGING OBSERVATIONS

International Nuclear Information System (INIS)

Muto, Takayuki

2011-01-01

We consider the effects of self-gravity on the hydrostatic balance in the vertical direction of a gaseous disk and discuss the possible signature of the self-gravity that may be captured by direct imaging observations of protoplanetary disks in the future. In this paper, we consider a vertically isothermal disk in order to isolate the effects of self-gravity. The specific disk model we consider in this paper is the one with a radial surface density gap, at which the Toomre's Q-parameter of the disk varies rapidly in the radial direction. We calculate the vertical structure of the disk including the effects of self-gravity. We then calculate the scattered light and the dust thermal emission. We find that if the disk is massive enough and the effects of self-gravity come into play, a weak bump-like structure at the gap edge appears in the near-infrared (NIR) scattered light, while no such bump-like structure is seen in the submillimeter (sub-mm) dust continuum image. The appearance of the bump is caused by the variation of the height of the surface in the NIR wavelength. If such a bump-like feature is detected in future direct imaging observations, combined with sub-mm observations, it will give us useful information about the physical states of the disk.

Method of synthesis of abstract images with high self-similarity

Science.gov (United States)

Matveev, Nikolay V.; Shcheglov, Sergey A.; Romanova, Galina E.; Koneva, Ð.¢atiana A.

2017-06-01

Abstract images with high self-similarity could be used for drug-free stress therapy. This based on the fact that a complex visual environment has a high affective appraisal. To create such an image we can use the setup based on the three laser sources of small power and different colors (Red, Green, Blue), the image is the pattern resulting from the reflecting and refracting by the complicated form object placed into the laser ray paths. The images were obtained experimentally which showed the good therapy effect. However, to find and to choose the object which gives needed image structure is very difficult and requires many trials. The goal of the work is to develop a method and a procedure of finding the object form which if placed into the ray paths can provide the necessary structure of the image In fact the task means obtaining the necessary irradiance distribution on the given surface. Traditionally such problems are solved using the non-imaging optics methods. In the given case this task is very complicated because of the complicated structure of the illuminance distribution and its high non-linearity. Alternative way is to use the projected image of a mask with a given structure. We consider both ways and discuss how they can help to speed up the synthesis procedure for the given abstract image of the high self-similarity for the setups of drug-free therapy.

Body Image in Transmen: Multidimensional Measurement and the Effects of Mastectomy.

Science.gov (United States)

van de Grift, Tim C; Kreukels, Baudewijntje P C; Elfering, Lian; Özer, Müjde; Bouman, Mark-Bram; Buncamper, Marlon E; Smit, Jan Maerten; Mullender, Margriet G

2016-11-01

Transmen are generally dissatisfied with their breasts and often opt for mastectomy. However, little is known about the specific effects of this procedure on this group's body image. To prospectively assess the effect of mastectomy on the body image of transmen, including cognitive, emotional, and behavioral aspects. During a 10-month period, all transmen applying for mastectomy were invited to participate in this study. The 33 participants completed assessments preoperatively and at least 6 months postoperatively. Participants were surveyed on body satisfaction (Body Image Scale for Transsexuals), body attitudes (Multidimensional Body-Self Relations Questionnaire), appearance schemas (Appearance Schemas Inventory), situational bodily feelings (Situational Inventory of Body Image Dysphoria), body image-related quality of life (Body Image Quality of Life Inventory), and self-esteem (Rosenberg Self-Esteem Scale). Control values were retrieved from the literature and a college sample. Before surgery, transmen reported less positive body attitudes and satisfaction, a lower self-esteem and body image-related quality of life compared with cisgender men and women. Mastectomy improved body satisfaction most strongly, although respondents reported improvements in all domains (eg, decreased dysphoria when looking in the mirror and improved feelings of self-worth). Most outcome measurements were strongly correlated. Mastectomy improves body image beyond satisfaction with chest appearance alone. Body satisfaction and feelings of "passing" in social situations are associated with a higher quality of life and self-esteem. Copyright © 2016 The Authors. Published by Elsevier Inc. All rights reserved.

Education for a positive self-image in a contemporary school

Directory of Open Access Journals (Sweden)

SANJA SIMEL

2013-09-01

Full Text Available In today's world characterized by changed systems of values and materialism, pedagogy should emphasize education for a positive self-image, especially in the contemporary school, whose educational goals are freedom, independence and individuality. This theoretical analysis provides a review of research on the importance and relationship of a positive self-image with other factors, such as social skills and academic achievement. Simultaneously, the methods and procedures by which teachers can foster a student's positive self-image are displayed. Although the degree of positive self-thinking is for the most part formed in interaction with other people, it is extremely important to raise students' awareness about their own internal strengths as well as their possibility of choice. The education of a positive self-image can be considered a part of "positive pedagogy" or "positive education" which focuses on traditional skills and happiness, but also joy - fervor that accompanies being (Fromm, 2004, p. 130.

Using Personal Construct Theory to Explore Self-Image with Adolescents with Learning Disabilities

Science.gov (United States)

Thomas, Samantha; Butler, Richard; Hare, Dougal Julian; Green, David

2011-01-01

A young person's construct of self can be fundamental to their psychological well being (Glick 1999; Emler 2001). However limited research has been conducted in the United Kingdom to explore self-image with adolescents with learning disabilities. Previous studies have demonstrated the effective use of personal construct theory with children…

Self-esteem, body esteem and body image: Exploring effective solutions for ‘at risk’ young women

OpenAIRE

Tirlea, Laura

2017-01-01

Low self-esteem and dissatisfaction with weight and looks is common amongst young people. Particularly for girls, low self-esteem and poor body image have been identified to be risk factors for development of eating disorders. This thesis sought to answer two broad aims. The first aim was to explore if a specific group based intervention (“Girls on the Go!” program), led by health professionals and delivered from a community setting increased self-esteem and related self-per...

BodiMojo: Efficacy of a Mobile-Based Intervention in Improving Body Image and Self-Compassion among Adolescents.

Science.gov (United States)

Rodgers, Rachel F; Donovan, Elizabeth; Cousineau, Tara; Yates, Kayla; McGowan, Kayla; Cook, Elizabeth; Lowy, Alice S; Franko, Debra L

2018-01-18

Mobile interventions promoting positive body image are lacking. This study presents a randomized controlled evaluation of BodiMojo, a mobile application (app) intervention grounded in self-compassion to promote positive body image. A sample of 274 adolescents, mean (SD) age = 18.36 (1.34) years, 74% female, were allocated to a control group or used BodiMojo for 6 weeks. Appearance esteem, body image flexibility, appearance comparison, mood, and self-compassion were assessed at baseline, 6, and 12 weeks. Significant time by group interactions emerged for appearance esteem and self-compassion, with appearance esteem and self-compassion increasing in the intervention relative to the control group. These findings provide preliminary support for BodiMojo, a cost-effective mobile app for positive body image.

Gender related differences in response to "in favor of myself" wellness program to enhance positive self & body image among adolescents.

Science.gov (United States)

Golan, Moria; Hagay, Noa; Tamir, Snait

2014-01-01

Physical, neurological and psychological changes are often experienced differently by male and female adolescents. Positive self-esteem, emotional well-being, school achievements, and family connectedness are considered as protective factors against health-compromising behaviors. This study examines the gender differences in respect to the effect of a school-based interactive wellness program--"In Favor of Myself"--on self-image, body image, eating attitudes and behaviors of young adolescents. Two hundred and ten adolescents (mean age 13.5) participated in the intervention group, 55% were girls and 45% boys. Program consisted of eight 90-minutes structured sessions integrated into a regular school coping skills curriculum. The program focused on self-esteem, self-image, body image, media literacy and cognitive dissonance. The overall impact of the program and the study protocol were previously published. Overall, there are gender related differences in respect to body image and self-image in young adolescents in response to "In Favor of Myself". Compared to boys, girls reported at baseline higher self-esteem, being more contingent by appearance, and their self-image was more influenced by popularity, appearance, interpersonal communication and admired people. Furthermore girls presented greater gap between current body figure and perceived ideal figure. Not only were girls more dissatisfied with their body, but they were more active in attempts to become and/or remain "thin". At program termination, gender × time effect was detected in reduction of self-worth contingent by others, change in importance given to achievements at schools, parents' perceptions, as well as the impact of comparisons to friends and family members on self-image. Girls exhibited more gains than boys from 'In Favor of Myself' which raise the questions about how effective would be the program when delivered in mixed gender groups vs. mono-gender groups.

Gender related differences in response to "in favor of myself" wellness program to enhance positive self & body image among adolescents.

Directory of Open Access Journals (Sweden)

Moria Golan

Full Text Available BACKGROUND: Physical, neurological and psychological changes are often experienced differently by male and female adolescents. Positive self-esteem, emotional well-being, school achievements, and family connectedness are considered as protective factors against health-compromising behaviors. This study examines the gender differences in respect to the effect of a school-based interactive wellness program--"In Favor of Myself"--on self-image, body image, eating attitudes and behaviors of young adolescents. METHODS: Two hundred and ten adolescents (mean age 13.5 participated in the intervention group, 55% were girls and 45% boys. Program consisted of eight 90-minutes structured sessions integrated into a regular school coping skills curriculum. The program focused on self-esteem, self-image, body image, media literacy and cognitive dissonance. The overall impact of the program and the study protocol were previously published. RESULTS: Overall, there are gender related differences in respect to body image and self-image in young adolescents in response to "In Favor of Myself". Compared to boys, girls reported at baseline higher self-esteem, being more contingent by appearance, and their self-image was more influenced by popularity, appearance, interpersonal communication and admired people. Furthermore girls presented greater gap between current body figure and perceived ideal figure. Not only were girls more dissatisfied with their body, but they were more active in attempts to become and/or remain "thin". At program termination, gender × time effect was detected in reduction of self-worth contingent by others, change in importance given to achievements at schools, parents' perceptions, as well as the impact of comparisons to friends and family members on self-image. CONCLUSIONS: Girls exhibited more gains than boys from 'In Favor of Myself' which raise the questions about how effective would be the program when delivered in mixed gender groups

Tunneling in a self-consistent dynamic image potential

International Nuclear Information System (INIS)

Rudberg, B.G.R.; Jonson, M.

1991-01-01

We have calculated the self-consistent effective potential for an electron tunneling through a square barrier while interacting with surface plasmons. This potential reduces to the classical image potential in the static limit. In the opposite limit, when the ''velocity'' of the tunneling electron is large, it reduces to the unperturbed square-barrier potential. For a wide variety of parameters the dynamic effects on the transmission coefficient T=|t 2 | can, for instance, be related to the Buettiker-Landauer traversal time for tunneling, given by τ BL =ℎ|d lnt/dV|

A Self-Image Questionnaire for Young Adolescents (SIQYA): Reliability and Validity Studies.

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Peterson, Anne C.; And Others

1984-01-01

The Self-Image Questionnaire for Young Adolescents (SIQYA), an adaptation of the Offer Self-Image Questionnaire (OSIQ), designed to measure aspects of self-image among young adolescents, was administered to two groups of sixth graders. The development of the SIQYA is described and reliability and validity results are presented. (EGS)

Body Image and Self-Esteem in Patients with Rheumatoid Arthritis.

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Kurt, Emine; Özdilli, Kürşat; Yorulmaz, Hatice

2013-09-01

The study was conducted in order to investigate the effect of disease-related variables such as socio-demographic characteristics, disease complaints and use of necrosis factor (anti-TNF) on the body image and self-esteem in patients with rheumatoid arthritis. The data was collected by an Introductory Information Form, Body Image Scale (PfP) BIS and the Coopersmith Self-Esteem Inventory (SEI) in 120 patients with rheumatoid arthritis and in 120 healthy controls. One-way analysis of variance, Tukey HDS analysis, t-test, Kruskal-Wallis test, the Mann-Whitney U test, and Pearson's and Spearman's correlation coefficients were used to compare the data. 60% of the control group were in the 20-44 year-age group, 75% were women and 30.8% had a bachelor's degree or above, while 60% of patient group were in the 20-44 year-age group, 71.7% were women and 36.7% had a bachelor's degree or higher education level. We observed that the body satisfaction and self-esteem levels were higher in the 20-44 age group, in those with a bachelor's degree or higher education and in the patients who had no additional disease and who did not use anti-TNF. The body satisfaction and self-esteem levels were lower in those who had been receiving treatment for longer than 5 years, who had changes in hands and body, who had gait disturbance and who had changes in family and working life. The assessment of the psychosocial needs with a holistic approach and training programs for body image and self-esteem would be advisable for patients with rheumatoid arthritis who are aged 45-59 years, who have low self-esteem, who have additional diseases, who use anti-TNF, who have changes in hands and body and who have primary-school education.

Sexual identity development and self-esteem as predictors of body image in a racially diverse sample of gay men.

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Udall-Weiner, Dana

2009-01-01

The current study examined the relationship between sexual identity development and body image, as well as the potential mediating effect of self-esteem, in a community sample of gay men. A diverse group of participants (N = 172), recruited through listservs and flyers, completed an online survey. Regression analyses were conducted to assess the relationships between identity development and self-esteem, identity development and body image, self-esteem and body image, and the mediating role of self-esteem. As predicted, significant relationships were identified between each pair of variables, and self-esteem was found to be a mediator when the sample was considered as a whole. When participants of color were compared to those who were White, however, between-group differences emerged; identity stage did not predict self-esteem or body image for participants of color, nor did the mediated relationship exist. Self-esteem did predict body image in both groups. The sociocultural context of these findings is considered.

A Diary Study of Self-Compassion, Upward Social Comparisons, and Body Image-Related Outcomes.

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Thøgersen-Ntoumani, Cecilie; Dodos, Louisa; Chatzisarantis, Nikos; Ntoumanis, Nikos

2017-07-01

Self-compassion may protect individuals experiencing poor body image and associated maladaptive outcomes. The purpose of the study was to examine within-person associations (whilst controlling for between-person differences) between appearance-related self-compassion, appearance-related threats (operationalised as upward appearance comparisons), and body image-related variables, namely, social physique anxiety, drive for thinness, and body dissatisfaction. A diary methodology was used whereby young women (n = 126; M age = 21.26) responded to brief online surveys three times per day (11am, 3pm, and 7pm) every second day for one week (i.e. a total of 12 measurement points). Results of mixed linear modeling revealed that both state appearance-related upward comparisons and self-compassion independently predicted all three outcomes in a positive and negative fashion, respectively. No significant interaction effects between state appearance-related upward comparisons and self-compassion were found. The results suggested that appearance-based self-compassion was important, not just when there was a potential threat to body image via upward appearance comparisons. The findings highlight the importance of fostering self-compassion on a daily level. © 2017 The International Association of Applied Psychology.

The Longitudinal Causal Directionality between Body Image Distress and Self-Esteem among Korean Adolescents: The Moderating Effect of Relationships with Parents

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Park, Woochul; Epstein, Norman B.

2013-01-01

This study examined the longitudinal relationship between self-esteem and body image distress, as well as the moderating effect of relationships with parents, among adolescents in Korea, using nationally representative prospective panel data. Regarding causal direction, the findings supported bi-directionality for girls, but for boys the…

Gender and Age Variations in the Self-Image of Jamaican Adolescents.

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Smith, Delores E.; Muenchen, Robert A.

1995-01-01

Investigated the relationships among gender, age, and self-image of adolescents attending three secondary schools in Jamaica. Results revealed statistically significant effects for both gender and age. Gender significantly influenced morals, while age differences affected six other dimensions. Some results contradicted past research. (RJM)

Hubungan Antara Body Image Dan Self-esteem Pada Dewasa Awal Tuna Daksa

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Sari, Dahlia Nur Permata

2012-01-01

Penelitian ini meneliti mengenai pengaruh body image terhadap selfesteem pada dewasa awal tuna daksa. Hipotesis pada penelitian ini adalah adanya hubungan positif antara body image dan self-esteem pada dewasa awal tuna daksa. Semakin positif body image maka semakin tinggi self-esteem yang dimiliki, begitu juga sebaliknya, semakin negatif body image maka semakin rendah self-esteem yang dimiliki. Sampel penelitian sebanyak 30 dewasa awal tuna daksa yang memiliki cacat tubuh seteleh kelahiran. D...

Body Image, Self-Esteem, and Weight-Related Criticism from Romantic Partners.

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Befort, Christie; Kurpius, Sharon E. Robinson; Hull-Blanks, Elva; Nicpon, Megan Foley; Huser, Laura; Sollenberger, Sonja

2001-01-01

Examines weight-related criticism from romantic partners and the importance of the romantic relationship in relation to the body image and self esteem for college freshmen women. Results reveal that self esteem and body image were positively related. Partner importance also predicted self esteem, whereas criticism did not. (Contains 55 references…

Health-Related Quality of Life, Depression, Anxiety, and Self-Image in Acute Lymphocytic Leukemia Survivors

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Birol Baytan

2016-12-01

Full Text Available Objective: With increasing survival rates in childhood acute lymphocytic leukemia (ALL, the long-term side effects of treatment have become important. Our aim was to investigate health-related quality of life, depression, anxiety, and self-image among ALL survivors. Materials and Methods: Fifty patients diagnosed with ALL and their siblings were enrolled. The Kovacs Children’s Depression Inventory, State-Trait Anxiety Inventory, Offer Self-Image Questionnaire, and Pediatric Quality of Life InventoryTM were used for collecting data. ANOVA tests were used to determine if there were any significant differences between groups. Results: ALL survivors had higher depression, more anxiety symptoms, lower quality of life, and more negative self-image when compared to their siblings. Conclusion: Continuous diagnostic and interventional mental health services might be necessary for possible emotional side effects of treatment during and after the treatment. Rehabilitation and followup programs should be implemented for children during and after treatment for ALL.

Gender Related Differences in Response to “In Favor of Myself” Wellness Program to Enhance Positive Self & Body Image among Adolescents

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Golan, Moria; Hagay, Noa; Tamir, Snait

2014-01-01

Background Physical, neurological and psychological changes are often experienced differently by male and female adolescents. Positive self-esteem, emotional well-being, school achievements, and family connectedness are considered as protective factors against health-compromising behaviors. This study examines the gender differences in respect to the effect of a school-based interactive wellness program – “In Favor of Myself” – on self-image, body image, eating attitudes and behaviors of young adolescents. Methods Two hundred and ten adolescents (mean age 13.5) participated in the intervention group, 55% were girls and 45% boys. Program consisted of eight 90-minutes structured sessions integrated into a regular school coping skills curriculum. The program focused on self-esteem, self-image, body image, media literacy and cognitive dissonance. The overall impact of the program and the study protocol were previously published. Results Overall, there are gender related differences in respect to body image and self-image in young adolescents in response to “In Favor of Myself”. Compared to boys, girls reported at baseline higher self-esteem, being more contingent by appearance, and their self-image was more influenced by popularity, appearance, interpersonal communication and admired people. Furthermore girls presented greater gap between current body figure and perceived ideal figure. Not only were girls more dissatisfied with their body, but they were more active in attempts to become and/or remain “thin”. At program termination, gender × time effect was detected in reduction of self-worth contingent by others, change in importance given to achievements at schools, parents' perceptions, as well as the impact of comparisons to friends and family members on self-image. Conclusions Girls exhibited more gains than boys from ‘In Favor of Myself’ which raise the questions about how effective would be the program when delivered in mixed gender groups vs

Impact of pediatric burn camps on participants' self esteem and body image: an empirical study.

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Bakker, Anne; Van der Heijden, Peter G M; Van Son, Maarten J M; Van de Schoot, Rens; Van Loey, Nancy E E

2011-12-01

This study focuses on possible effects of specialized summer camps on young burn survivors' self esteem and body image. Quantitative as well as qualitative measures was used. To study possible effects, a pretest-posttest comparison group design with a follow-up was employed. Self-report questionnaires were used to measure self esteem and body image in a burn camp group (n=83, 8-18 years) and in a comparison group of children with burns who did not attend a burn camp during the course of the study (n=90, 8-18 years). Additionally, burn camp participants and parents completed an evaluation form about benefits derived from burn camp. A small positive short-term effect of burn camp participation was found on the 'satisfaction with appearance' component of body image. Overall, participants and parents showed high appreciation of the burn camps and reported several benefits, particularly concerning meeting other young burn survivors. Albeit statistically modest, this is the first quantitative study to document on a significant short-term impact of burn camp on young burn survivors' body image. Implications of this result for future research and burn camp organization were discussed, including the strengths of residential camps for young burn survivors. Copyright © 2011 Elsevier Ltd and ISBI. All rights reserved.

The religious-spiritual self-image and behaviours among adolescent street children in Harare, Zimbabwe.

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Mhizha, Samson

2015-02-01

The present study sought to explore the relationship between street childhood and adolescent religious-spiritual self-image. In Zimbabwe, there has been a rise in street children population in the urban centres. The current study investigated whether adolescent street children live and work in an eco-developmentally risky context for the development of positive religious-spiritual self-image. This rise in street children population has been in the context of a socio-politico-economic crisis, which was marked by record inflation rates and the HIV and AIDS pandemic. The research objectives were to investigate the nature of religious-spiritual self-image for street-living adolescent children, and to determine the effects of self-image on the behaviour of street-living adolescent children. A psycho-ethnographic research design was employed in this study. This involved collection of data for a sustained period in the context within which the participants live. The participants were 16 street-living adolescent children aged between 12 and 18 years and six key informants all in Harare in Zimbabwe. A total of 22 participants took part in this study. Snowballing was used to recruit key informant interviewees, while purposive sampling was used to recruit participants for focus group discussions, in-depth interview, and participant and non-participant observations. Key informant interviews, focus group discussions, in-depth interviews, and participant and non-participant observations were the data collection methods. Thematic content analysis was used for analysing the data. This thematic content analytic method helped to identify themes on the religious-spiritual self-image that emerged from the data. Data analysis revealed that the adolescent street children's religious-spiritual self-image is largely negative. Most street-living adolescent children believed that they were controlled and influenced by evil spirits and that their relatives were casting bad spells on them

Self-Image and Parental Attachment among Late Adolescents in Belize

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Kenny, Maureen E.; Griffiths, Joann; Grossman, Jennifer

2005-01-01

This study investigated the relationship of ethnicity, parental education, gender, and parental attachment to multiple dimensions of self-image among 285 (161 female and 124 male) late adolescent Belizean students. Student ratings of self-image were unrelated to paternal education and student ethnicity. For maternal education, ethnic identity was…

Use of a Cutaneous Body Image (CBI) scale to evaluate self perception of body image in acne vulgaris.

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Amr, Mostafa; Kaliyadan, Feroze; Shams, Tarek

2014-01-01

Skin disorders such as acne, which have significant cosmetic implications, can affect the self-perception of cutaneous body image. There are many scales which measure self-perception of cutaneous body image. We evaluated the use of a simple Cutaneous Body Image (CBI) scale to assess self-perception of body image in a sample of young Arab patients affected with acne. A total of 70 patients with acne answered the CBI questionnaire. The CBI score was correlated with the severity of acne and acne scarring, gender, and history of retinoids use. There was no statistically significant correlation between CBI and the other parameters - gender, acne/acne scarring severity, and use of retinoids. Our study suggests that cutaneous body image perception in Arab patients with acne was not dependent on variables like gender and severity of acne or acne scarring. A simple CBI scale alone is not a sufficiently reliable tool to assess self-perception of body image in patients with acne vulgaris.

Physician self-referral for imaging and the cost of chronic care for Medicare beneficiaries.

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Hughes, Danny R; Sunshine, Jonathan H; Bhargavan, Mythreyi; Forman, Howard

2011-09-01

As the cost of both chronic care and diagnostic imaging continue to rise, it is important to consider methods of cost containment in these areas. Therefore, it seems important to study the relationship between self-referral for imaging and the cost of care of chronic illnesses. Previous studies, mostly of acute illnesses, have found self-referral increases utilization and, thus, probably imaging costs. To evaluate the relationship between physician self-referral for imaging and the cost of episodes of chronic care. Using Medicare's 5% Research Identifiable Files for 2004 to 2007, episodes of care were constructed for 32 broad chronic conditions using the Symmetry Episode Treatment Grouper. Using multivariate regression, we evaluated the association between whether the treating physician self-referred for imaging and total episode cost, episode imaging cost, and episode nonimaging cost. Analyses were controlled for patient characteristics (eg, age and general health status), the condition's severity, and treating physician specialty. Self-referral in imaging was significantly (P nonimaging costs were much more often significantly higher (in 24 combinations) with self-referral than being lower (in 4 combinations). We find broad evidence that physician self-referral for imaging is associated with significantly and substantially higher chronic care costs. Unless self-referral has empirically demonstrable benefits, curbing self-referral may be an appropriate route to containing chronic care costs.

Self-image of the Patients with Head and Neck Cancer: A Mixed Method Research

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Nayak, Shalini G; Pai, Mamatha Shivananda; George, Linu Sara

2016-01-01

Aim: The aim of the study was to assess the self-image of the patients with head and neck cancers (HNCs) by using a mixed method research. Subjects and Methods: A mixed method approach and triangulation design was used with the aim of assessing the self-image of the patients with HNCs. Data was gathered by using self-administered self-image scale and structured interview. Nested sampling technique was adopted. Sample size for quantitative approach was 54 and data saturation was achieved with seven subjects for qualitative approach. Institutional Ethical Committee clearance was obtained. Results: The results of the study showed that 30 (56%) subjects had positive self-image and 24 (44%) had negative self-image. There was a moderate positive correlation between body image and integrity (r = 0.430, P = 0.001), weak positive correlation between body image and self-esteem (r = 0.270, P = 0.049), and no correlation between self-esteem and integrity (r = 0.203, P = 0.141). The participants also scored maximum (24/24) in the areas of body image and self-esteem. Similar findings were also observed in the phenomenological approach. The themes evolved were immaterial of outer appearance and desire of good health to all. Conclusion: The illness is long-term and impacts the individual 24 h a day. Understanding patients’ self-concept and living experiences of patients with HNC is important for the health care professionals to improve the care. PMID:27559264

Self-image of the patients with head and neck cancer: A mixed method research

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Shalini G Nayak

2016-01-01

Full Text Available Aim: The aim of the study was to assess the self-image of the patients with head and neck cancers (HNCs by using a mixed method research. Subjects and Methods: A mixed method approach and triangulation design was used with the aim of assessing the self-image of the patients with HNCs. Data was gathered by using self-administered self-image scale and structured interview. Nested sampling technique was adopted. Sample size for quantitative approach was 54 and data saturation was achieved with seven subjects for qualitative approach. Institutional Ethical Committee clearance was obtained. Results: The results of the study showed that 30 (56% subjects had positive self-image and 24 (44% had negative self-image. There was a moderate positive correlation between body image and integrity (r = 0.430, P = 0.001, weak positive correlation between body image and self-esteem (r = 0.270, P = 0.049, and no correlation between self-esteem and integrity (r = 0.203, P = 0.141. The participants also scored maximum (24/24 in the areas of body image and self-esteem. Similar findings were also observed in the phenomenological approach. The themes evolved were "immaterial of outer appearance" and "desire of good health to all." Conclusion: The illness is long-term and impacts the individual 24 h a day. Understanding patients′ self-concept and living experiences of patients with HNC is important for the health care professionals to improve the care.

The effects of body exposure on self-body image and esthetic appreciation in anorexia nervosa.

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Cazzato, Valentina; Mian, Emanuel; Mele, Sonia; Tognana, Giulia; Todisco, Patrizia; Urgesi, Cosimo

2016-03-01

Repeated exposures to thin-idealized body shapes may alter women's perceptions of what normal (e.g., accepted) and ideal (e.g., desired) bodies in a cultural environment look like. The aim of the present study was to investigate whether exposure to thin and round body shapes may change the subsequent esthetic appreciation of others' bodies and the perceptual and cognitive-affective dimensions of self-body image in patients suffering from anorexia nervosa (AN). Thirteen AN patients and 13 matched healthy controls were exposed to pictures of either thin or round unfamiliar body models and, before and after exposure, they were required to either express liking judgments about round and slim figures of unfamiliar bodies (esthetic task) or to adjust distorted pictures of their own body to their perceptual (How do you see yourself?), affective (How do you feel yourself?), metacognitive (How do others see you?) and ideal (How would you like to look like?) body image (self-body adjustment task). Brief exposures to round models increased liking judgments of round figures in both groups. However, only in AN patients, exposure to round models induced an increase in thin figures liking, which positively correlated with their preoccupation with dieting. Furthermore, exposure to round bodies in AN patients, but not in controls, increased the distortion for the perceptual body image and decreased the size of the ideal one. No differences between the two groups were obtained after adaptation to thin models. Our results suggest that AN patients' perception of their own and others' body is more easily malleable by exposure to round figures as compared to controls. Crucially, this mechanism may strongly contribute to the development and maintenance of self-body image disturbances.

[Effect of body image in adolescent orthodontic treatment].

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Minghui, Peng; Jing, Kang; Xiao, Deng

2017-10-01

This study was designed to probe the psychological factors adolescent orthodontic patients, the role of body image and self-esteem in the whole process of orthodontic treatment and the impact on the efficacy and satisfaction of orthodontic. Five hundred and twenty-eight patients were selected in this study. The Aesthetic Component of the Index of Orthodontic Treatment Need (IOTN-AC) , Rosenberg Self-Esteem Scale (SES), Negative Physical Self-General (NPS-G) and other body analysis scale study after orthodontic lasted 18-24 months were used to investigate the role of body image in adolescent orthodontic treatment. Esthetic evaluation of patients teeth after correction had been significantly improved, patient self-evaluation difference IOTN-AC doctor evaluation, Psychosocial Impact of Dental Aesthetics Questionnaire-tooth confidence, aesthetic concerns, psychological impact and social function were significantly improved. The improvement of the dental aesthetics component (T2 when doctors evaluate IOTN-AC) was positively correlated with the evaluation of the efficacy, and was significantly negatively correlated with the negative emotions of patients at baseline. Negative body image-dental dissatisfied-cognitive component and the affective component, the overall negative body image and negative emotions can predict patient satisfaction with treatment efficacy. Orthodontic treatment not only improves the self-aesthetic evaluation of adolescent patients, but also has a positive effect on the mental health of adolescent patients.

WDM compatible and electrically tunable SPE-OCDMA system based on the temporal self-imaging effect.

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Tainta, S; Amaya, W; Erro, M J; Garde, M J; Sales, S; Muriel, M A

2011-02-01

A coding/decoding setup for a spectral phase encoding optical code-division multiple access (SPE-OCDMA) system has been developed. The proposal is based on the temporal self-imaging effect and the use of an easily tunable electro-optic phase modulator to achieve line-by-line coding of the transmitted signal, thus assuring compatibility with WDM techniques. Modulation of the code is performed at the same rate as the data, avoiding the use of high-bandwidth electro-optic modulators. As proof of concept of the technique, experimental results are presented for a back-to-back coder/decoder setup transmitting a 10 GHz unmodulated optical pulse train within an 80 GHz optical window and using 8-chip Hadamard codes.

The Effects of Aerobic Exercise on Body Image Attitudes in Women

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Sareh Zar-Shenas

2010-07-01

Full Text Available Objective: Sociocultural emphasis and increased interest in physical attractiveness and current attitudes body structure have increased body image dissatisfaction among women. The prevalence of body image dissatisfaction is linked with various psychological disorders and disturbances such as low self-esteem, depression and other disorders. The present study investigated the short program aerobic exercise effects on body image among women. Materials & Methods: In this interventional and quasi experimental study, 82 females among 150 women (18-45 years old referred to Enghelab and Gol sports clubs in Tehran were selected by convenient and simple sampling based on inclusive and exclusive criteria and randomly divided into two intervention and control groups. They did not participate in any exercise in last 3 months and also they did not have any physical disease and meet criteria for deficit of body image attitudes. Data collection was done by using demographic and Multidimensional Body Self-Relation Questionnaire. The intervention group participated in aerobic exercise program. These sessions lasted 3 hours per week for 4 weeks. Data were analyzed by Chi–Square, Paired T and Independent T tests. Results: There were significant differences between two groups after intervention in sub items of body image including: self-appearance evaluation (P<0.001, self-appearance orientation (P<0.001, health orientation (P=0.003, illness orientation (P=0.002, but their fitness evaluation (P=0.141, self-fitness orientation (P=0.888, health evaluation (P=0.072, self-body satisfaction (P=0.082, overweight preoccupations (P=0.167 and self-assesed weight (P=0.156 did not change clearly. Conclusion: Short periods of aerobic exercise can effectively promote body image attitudes among women, and exercise can be used as a method of treatment in occupational therapy of the disorder.

Self-gating MR imaging of the fetal heart: comparison with real cardiac triggering

International Nuclear Information System (INIS)

Yamamura, Jin; Frisch, Michael; Ecker, Hannes; Adam, Gerhard; Wedegaertner, Ulrike; Graessner, Joachim; Hecher, Kurt

2011-01-01

To investigate the self-gating technique for MR imaging of the fetal heart in a sheep model. MR images of 6 fetal sheep heart were obtained at 1.5T. For self-gating MRI of the fetal heart a cine SSFP in short axis, two and four chamber view was used. Self-gated images were compared with real cardiac triggered MR images (pulse-wave triggering). MRI of the fetal heart was performed using both techniques simultaneously. Image quality was assessed and the left ventricular volume and function were measured and compared. Compared with pulse-wave triggering, the self-gating technique produced slightly inferior images with artifacts. Especially the atrial septum could not be so clearly depicted. The contraction of the fetal heart was shown in cine sequences in both techniques. The average blood volumes could be measured with both techniques with no significant difference: at end-systole 3.1 ml (SD± 0.2), at end-diastole 4.9 ml (±0.2), with ejection fractions at 38.6%, respectively 39%. Both self-gating and pulse-wave triggered cardiac MRI of the fetal heart allowed the evaluation of anatomical structures and functional information. Images obtained by self-gating technique were slightly inferior than the pulse-wave triggered MRI. (orig.)

Attachment Styles and Self-Image in Turkish Adolescents

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Cetin, Fusun Cuhadaroglu; Tuzun, Zeynep; Pehlivanturk, Berna; Unal, Fatih; Gokler, Bahar

2010-01-01

The purpose of this article is to examine the attachment styles and the relation of these styles to the self-image in Turkish adolescents. The study included 378 adolescents (196 females and 182 males) from high schools with different socioeconomic status (SES) who were administered Relationship Scale Questionnaires and Offer Self-Image…

Impact of Consumers’ Self-Image and Demographics on Preference for Healthy Labeled Foods

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Savita Hanspal

2017-01-01

Full Text Available Consumers are becoming more health conscious. Increasingly, products that are labeled “healthy” are being marketed as new retailers and new brands vie for the consumers’ share of wallet. This research identifies the self-image factors that constitute a health conscious image of the self and examines how self-image impacts consumer buying of foods that are labeled healthy. It also makes an effort to find out whether specific self-image factors are significantly associated with demographics. This study employs a scale consisting of 15 statements that included four statements from the Health Consciousness scale developed by Gould. The psychometric properties of the scale used in the study are reported. The study uses factor analysis to identify five factors of consumer self-image as they relate to health consciousness. Furthermore, the study explores the relationship between demographics such as age, gender, education, and relationship status with the self-image factors and reports results for consumer preferences for choosing healthy foods when hungry. This research has important implications for marketers in the health food industry and for such other companies that might use consumer health consciousness as a basis for market segmentation and strategy design.

The syndrome of burnout, self-image, and anxiety with grammar school students

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Branko Slivar

2001-06-01

Full Text Available This article deals with certain characteristics of the teenagers experiencing burnout and the influence of some dimensions of self image and anxiety on the burnout dimensions. The research investigated the relation between anxiety, dimensions of self image and the burnout syndrome. The research data were obtained through the use of the modified MBI - "The Maslach Burnout Inventory", Spielbergs' questionnaire of trait anxiety and Offer Self-Imagination Questionnaire. The research comprised 1868 students aged between 15 and 19 6.7 percent of them turned out to have suffered a strong burnout. The results of the research proved that the burnout syndrome appears in several different levels of intensity also among adolescents attending secondary school (gymnasia programme. True multivariate research the two basic hypotheses were confirmed: the adolescents with some negative self image areas are more likely to suffer burnout and that there is the certain dimensions of self image influence certain dimensions of burnout.

[Graphic images on cigarette packages not effective].

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Kok, Gerjo; Peters, Gjalt-Jorn Y; Ruiter, Robert A C

2013-01-01

The Dutch Government intends to make graphic images on cigarette packages mandatory. However, contrary to other policy measures to reduce smoking, health warnings do not work. There is no acceptable evidence in favour of graphic images and behaviour change theories suggest methods of change that improve skills, self-efficacy and social support. Thus, theory- and evidence-based policy should focus on prohibiting the tobacco industry from glamourizing packaging and make health communications on packages mandatory. As to the type of communications to be used, theory and evidence suggest that warning of the negative consequences of smoking is not an effective approach. Rather, targeting the most important determinants of the initiation of smoking and its successful cessation - such as skills, self-efficacy and subjective norm - along with the most effective behaviour change methods appears to be the most expedient strategy.

An Automated Self-Learning Quantification System to Identify Visible Areas in Capsule Endoscopy Images.

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Hashimoto, Shinichi; Ogihara, Hiroyuki; Suenaga, Masato; Fujita, Yusuke; Terai, Shuji; Hamamoto, Yoshihiko; Sakaida, Isao

2017-08-01

Visibility in capsule endoscopic images is presently evaluated through intermittent analysis of frames selected by a physician. It is thus subjective and not quantitative. A method to automatically quantify the visibility on capsule endoscopic images has not been reported. Generally, when designing automated image recognition programs, physicians must provide a training image; this process is called supervised learning. We aimed to develop a novel automated self-learning quantification system to identify visible areas on capsule endoscopic images. The technique was developed using 200 capsule endoscopic images retrospectively selected from each of three patients. The rate of detection of visible areas on capsule endoscopic images between a supervised learning program, using training images labeled by a physician, and our novel automated self-learning program, using unlabeled training images without intervention by a physician, was compared. The rate of detection of visible areas was equivalent for the supervised learning program and for our automatic self-learning program. The visible areas automatically identified by self-learning program correlated to the areas identified by an experienced physician. We developed a novel self-learning automated program to identify visible areas in capsule endoscopic images.

The role of high-involvement work practices and professional self-image in nursing recruits' turnover: A three-year prospective study.

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Chênevert, Denis; Jourdain, Geneviève; Vandenberghe, Christian

2016-01-01

The retention of young graduate nurses has become a major management challenge among hospitals in Western countries, which is amplified in a context of aging of populations and an increasing demand for services from patients. Moreover, as it has been reported that 50% of experienced nurses do not recommend a career in nursing, it is likely that retention problems occur not only at the level of the organization, but also at the level of the nursing profession. Although research has identified some predictors of nurse turnover, it is unclear which factors influence nurses' turnover from the organization and from the profession and how these factors interrelate with one another over time. The present study extends previous research on nurse turnover by looking at the combined effects of nurses' pre-entry expectations, perceived high-involvement work practices, and professional self-image, on intended and actual turnover from the organization and the profession. A prospective, longitudinal study of a sample of 160 graduated nurses affiliated with the Quebec Nurses' Association, Canada, was conducted. Participants were surveyed at three points in time, spread over a 3-year period. Graduated nurses' pre-entry expectations and professional self-image were surveyed at graduation (Time 1), while perceived high-involvement work practices, professional self-image, and intention to leave the organization and the profession were captured six months following nurses' entry into the labor market (Time 2). Finally, participants were surveyed with respect to organizational and professional turnover three years after the Time 2 survey (Time 3). Structural equations modeling was used to examine the structure of the measures and the relationships among the constructs. Although pre-entry expectations had no effect, perceived high-involvement work practices were positively related to Time 2, professional self-image (controlling for pre-entry professional self-image). Moreover, high

A Comparison of the Self-Image of Talented Teenagers with a Normal Adolescent Population.

Science.gov (United States)

Whalen, Samuel; Csikszentmihalyi, Mihaly

1989-01-01

Self-images of 76 male/101 female adolescents talented in mathematics, science, music, athletics, or art were compared to those of 112 male/106 female average teenagers, using the Offer Self-Image Questionnaire for Adolescents. Talented adolescents had self-images generally similar to their average peers. Implications for the development of talent…

A daily diary study of self-compassion, body image, and eating behavior in female college students.

Science.gov (United States)

Kelly, Allison C; Stephen, Elizabeth

2016-06-01

Although self-compassion is associated with healthier body image and eating behavior, these findings have generally emerged at the between-persons level only. The present study investigated the unique contributions of within-person variability in self-compassion, and between-persons differences in self-compassion, to body image and eating behavior. Over seven days, 92 female college students completed nightly measures of self-compassion, self-esteem, dietary restraint, intuitive eating, body appreciation, body satisfaction, and state body image. Multilevel modeling revealed that within-persons, day-to-day fluctuations in self-compassion contributed to day-to-day fluctuations in body image and eating. Between-persons, participants' average levels of self-compassion across days contributed to their average levels of body image and eating over the week. Results generally held when controlling for within- and between-persons self-esteem. Evidently, the eating and body image benefits of self-compassion may come not only from being a generally self-compassionate person, but also from treating oneself more self-compassionately than usual on a given day. Copyright © 2016 Elsevier Ltd. All rights reserved.

Body image and self-esteem in lower-limb amputees.

Science.gov (United States)

Holzer, Lukas A; Sevelda, Florian; Fraberger, Georg; Bluder, Olivia; Kickinger, Wolfgang; Holzer, Gerold

2014-01-01

Limb amputation is often an inevitable procedure in the advanced condition of various diseases and poses a dramatic impact on a patient's life. The aim of the present study is to analyze the impact of lower-limb amputations on aesthetic factors such as body image and self-esteem as well as quality of life (QoL). 298 patients (149 uni- or bilateral lower-limb amputees and 149 controls) were included in this cross-sectional study in three centers. Demographic data was collected and patients received a 118-item questionnaire including the Multidimensional Body-Self Relations Questionnaire (MBSRQ), the Rosenberg Self-esteem (RSE) scale and the SF-36 Health Survey (QoL). ANOVA and student's t-test were used for statistical analysis. Unilateral lower-limb amputees showed a significant lower MBSRQ score of 3.07±0.54 compared with 3.41±0.34 in controls (pbody image and QoL. Self-esteem seems to be an independent aspect, which is not affected by lower-limb amputation. However, self-esteem is influenced significantly by phantom pain sensation.

The effects of aerobic- versus strength-training on body image among young women with pre-existing body image concerns.

Science.gov (United States)

Martin Ginis, Kathleen A; Strong, Heather A; Arent, Shawn M; Bray, Steven R; Bassett-Gunter, Rebecca L

2014-06-01

This experiment compared the effects of aerobic-training (AT) versus strength-training (ST) on body image among young women with pre-existing body image concerns. Theory-based correlates of body image change were also examined. Participants were 46 women (M age=21.5 years), randomly assigned to an 8-week AT or ST intervention consisting of supervised exercise 3 days/week. Multidimensional measures of body image were administered pre- and post-intervention, along with measures of physical fitness, perceived fitness, and exercise self-efficacy. Women in the AT condition reported greater reductions in social physique anxiety (p=.001) and tended to report greater improvements in appearance evaluation (p=.06) than women in the ST condition. Changes in perceived fatness, perceived aerobic endurance and aerobic self-efficacy were significantly correlated with body image change (psexercise to improve body image and advancing theory to account for the effects of exercise. Copyright © 2014 Elsevier Ltd. All rights reserved.

Construct Validity of the Offer Self-Image Questionnaire and Its Relationship with Self-Esteem, Depression, and Ego Development

Science.gov (United States)

Lindfors, Kaj; Elovainio, Marko; Sinkkonen, Jari; Aalberg, Veikko; Vuorinen, Risto

2005-01-01

Construct validity of the Offer Self-Image Questionnaire (OSIQ) was studied in a sample of 194 normal Finnish adolescents from 14 to 16 years of age. Confirmatory factor analysis provided support for the hierarchical structure of adolescents' self-image with 5 lower-order factors loading on a single higher-order factor. Lower-order factors were…

Investigation into the phase effects in nonlinear hollow waveguides

CSIR Research Space (South Africa)

Litvin, IA

2006-07-01

Full Text Available field Figure 3: The dependence of Talbot length on pump power for different values of waveguide radius is shown; a)-R = 200mkm, b)-R = 300 mkm. When there is no pump zT is close to Talbot length without SRS and equal to 2.1 m for 300 mkm sss gigg...

Adult self-image and well-being after testicular cancer: The role of agency and meaning.

Science.gov (United States)

Ryan, Sean J; Hoyt, Michael A

2018-08-01

Cancer during young adulthood can limit the extent to which one adopts an adult self-image. However, the relationship of adult self-image to cancer-related adjustment remains unexplored. The current study examines relationships of adult self-image and social/emotional well-being and job-related problems in young testicular cancer survivors. Factors thought to facilitate future-oriented goals (i.e. agency and meaning) are examined as intermediary processes. Testicular cancer survivors (N = 171) between the ages of 18 and 29 completed questionnaire measures of adult self-image, agency, sense of meaning and indicators of adjustment. Social and emotional well-being were measured by the Functional Assessment of Cancer Therapy-General. Job problems were assessed using the EORTC's testicular cancer supplement (EORTC QLQ-TC26). Path model results revealed direct associations of survivors' adult self-image with social (β = .20, p image and well-being indicators. Finally, the relationship between adult self-image and job problems was only significant for those who were employed or in school (β = -.19, p image might be useful in identifying risk for poor adjustment. Interventions that target agency and meaning might facilitate developmental goals.

Physical property and MR imaging of self-expandable metallic stents

Energy Technology Data Exchange (ETDEWEB)

Roh, Hong Gee; Kang, Sung Gwon; Cho, Young Kook; Kim, Hyung Jin; Lim, Myung Kwan; Cho, Soon Gu; Yoh, Kyu Tong; Suh, Chang Hae [Inha Univ., College of Medicine, Seoul (Korea, Republic of)

1998-09-01

In order to furnish basic information prior to their use, the physical properties of various self-expandable metallic stents and their MR characteristics were evaluated. Four commercially available self-expandable metallic stents-Gianturco-the Rosch, Hanaro, Memotherm, and Wallstent-were used in this study. For evaluation of the physical properties of each, hoop strengths and changes in radii according to the degrees of longitudinal flexion were compared. Stent characteristics seen on MR images were evaluated by measuring magnetic torque and by comparing images obtained in the vascular phantom using SE T1TI, FSE T2WI, and FMPSPGR sequences. These images were analyzed with special emphasis on artifact size and the apparant shepe of the stent. Hoop strength was greatest in the Gianturco-Rosch stent, followed by the Memotherm, Hanaro, and Wallstent. When flexed in the longitudinal axis, the radius of the Hanaro and Memotherm stent decreased slightly as a larger flexion angle was applied. When this was 90 deg, however, the connection of the Gianturco-Rosch stent collapsed. In contrast, the radius of the Wallstent became larger as a larger flexion angle was applied. At the portal of the MR imaging unit, neither the Memotherm nor Wallstent showed deflection; except for a thin hyperintense rim at both ends, their images were excellent, and the lumina of these stents were also clearly seen. In contrast, the Gianturco-Rosch and Hanaro stent demonstrated large deflexion and showed a severe black-hole artifact. As a result, visualization of the stents themselves and their lumina was impossible. The Gianturco-Rosch stent showed greatrer hoop strength than the others. The Wallstent showed good longitudinal flexibility and was thought to be effective in tortuous vessels. For follow-up after placement, especially when the nonferromagnetic Memotherm and Wallstent are used, MR imaging appears to be safe and useful.=20.

Self-triggered image intensifier tube for high-resolution UHECR imaging detector

CERN Document Server

Sasaki, M; Jobashi, M

2003-01-01

The authors have developed a self-triggered image intensifier tube with high-resolution imaging capability. An image detected by a first image intensifier tube as an electrostatic lens with a photocathode diameter of 100 mm is separated by a half-mirror into a path for CCD readout (768x494 pixels) and a fast control to recognize and trigger the image. The proposed system provides both a high signal-to-noise ratio to improve single photoelectron detection and excellent spatial resolution between 207 and 240 mu m rendering this device a potentially essential tool for high-energy physics and astrophysics experiments, as well as high-speed photography. When combined with a 1-arcmin resolution optical system with 50 deg. field-of-view proposed by the present authors, the observation of ultra high-energy cosmic rays and high-energy neutrinos using this device is expected, leading to revolutionary progress in particle astrophysics as a complementary technique to traditional astronomical observations at multiple wave...

Does Self-Image Matter? Client's Self-Image, Behaviour and Evaluation of a Career Counselling Session: An Exploratory Study

Science.gov (United States)

Schedin, Gunnar; Armelius, Kerstin

2008-01-01

This exploratory study addresses differences in self-image as a client characteristic in career counselling by using the Structural Analysis of Social Behaviour (Benjamin, L., "Journal of Consulting and Clinical Psychology," 64(6), 1203-1212, 1996; Benjamin, L., "Journal of Personality Assessment," 66(2), 248-266, 1996) and an adaptation…

Relation between self-image score of SRS-22 with deformity measures in female adolescent idiopathic scoliosis patients.

Science.gov (United States)

Wang, L; Wang, Y P; Yu, B; Zhang, J G; Shen, J X; Qiu, G X; Li, Y

2014-11-01

Adolescent idiopathic scoliosis (AIS) is a pathology which affects the individual's functioning in the widely understood physical, psychic, and social aspects. More attention should be paid to patients' perception of self-image when evaluating the spine deformity. The present retrospective study evaluated the associations between the deformity measures and self-image score as determined by the SRS-22 questionnaire in Chinese female AIS patients. The self-image score correlates significantly with deformity measures. The location of main curve apex and the number of curve could affect the self-image score. We retrospectively reviewed the records of 202 female patients, collected data on patient's age, body mass index, radiographic and physical measures and self-image score of SRS-22 questionnaire. According to the location of main curve apex and the number of curve, the patients were divided to different subgroups. Correlations between deformity measures and self-image score of different groups were evaluated by the Spearman correlation test. The self-image score correlated negatively with the main Cobb angle, apical vertebral translation (AVT), and razor hump height. There is no significant difference of self-image score between thoracic curve (TC) and thoracolumbar curve (TL/LC) subgroups. And the self-image scores of one-curve, two-curve and three-curve subgroups are similar. For Chinese female AIS patients in our study, self-image was found to correlate negatively with the main Cobb angle, AVT and razor hump height. And the location of scoliosis apex and the number of curve are not influencing factors of self-image perception. Level IV, retrospective study. Copyright © 2014 Elsevier Masson SAS. All rights reserved.

Empowerment, feminism, and self-efficacy: relationships to body image and disordered eating.

Science.gov (United States)

Kinsaul, Jessica A E; Curtin, Lisa; Bazzini, Doris; Martz, Denise

2014-01-01

Sociocultural norms pertaining to an ideal of thinness for women likely play a role in the development and maintenance of disturbance in body image, and by extension, disordered eating. However, competing norms associated with feminism may buffer women from pressures associated with achieving the thin ideal. The present study explored the relationship between feminist ideology, empowerment, and self-efficacy relative to body image and eating behavior with a sample of U.S. undergraduate women (N=318) attending a southeastern U.S. mid-sized university. In planned hierarchical multiple regression analyses, endorsement of feminist ideology predicted perceptions of positive body image, but did not appear to predict disordered eating. Self-efficacy emerged as a robust predictor of positive body image and lower disordered eating even after controlling for perceptions of personal empowerment and feminism. Results, although limited by correlational data, suggest that self-efficacy may protect college-aged women from disordered eating and negative body image. Copyright © 2013 Elsevier Ltd. All rights reserved.

Self-imaging of partially coherent light in graded-index media.

Science.gov (United States)

Ponomarenko, Sergey A

2015-02-15

We demonstrate that partially coherent light beams of arbitrary intensity and spectral degree of coherence profiles can self-image in linear graded-index media. The results can be applicable to imaging with noisy spatial or temporal light sources.

Imaging popliteal artery disease in young adults with claudication: self-assessment module.

Science.gov (United States)

Chew, Felix S; Bui-Mansfield, Liem T

2007-09-01

The educational objectives of this self-assessment module on imaging popliteal artery disease in young adults with intermittent claudication are for the participant to exercise, self-assess, and improve his or her knowledge of the imaging and clinical features of popliteal artery entrapment syndrome, cystic adventitial disease,and masses associated with popliteal artery obstruction.

Grating-based x-ray differential phase contrast imaging with twin peaks in phase-stepping curves—phase retrieval and dewrapping

Energy Technology Data Exchange (ETDEWEB)

Yang, Yi; Xie, Huiqiao; Tang, Xiangyang, E-mail: xiangyang.tang@emory.edu [Imaging and Medical Physics, Department of Radiology and Imaging Sciences, Emory University School of Medicine, 1701 Uppergate Dr., C-5018, Atlanta, Georgia 30322 (United States); Cai, Weixing [Department of Radiation Oncology, Brigham and Women’s Hospital Harvard Medical School, 75 Francis Street, Boston, Massachusetts 02115 (United States); Mao, Hui [Laboratory of Functional and Molecular Imaging and Nanomedicine, Department of Radiology and Imaging Sciences, Emory University School of Medicine, 1841 Clifton Road NE, Atlanta, Georgia 30329 (United States)

2016-06-15

Purpose: X-ray differential phase contrast CT implemented with Talbot interferometry employs phase-stepping to extract information of x-ray attenuation, phase shift, and small-angle scattering. Since inaccuracy may exist in the absorption grating G{sub 2} due to an imperfect fabrication, the effective period of G{sub 2} can be as large as twice the nominal period, leading to a phenomenon of twin peaks that differ remarkably in their heights. In this work, the authors investigate how to retrieve and dewrap the phase signal from the phase-stepping curve (PSC) with the feature of twin peaks for x-ray phase contrast imaging. Methods: Based on the paraxial Fresnel–Kirchhoff theory, the analytical formulae to characterize the phenomenon of twin peaks in the PSC are derived. Then an approach to dewrap the retrieved phase signal by jointly using the phases of the first- and second-order Fourier components is proposed. Through an experimental investigation using a prototype x-ray phase contrast imaging system implemented with Talbot interferometry, the authors evaluate and verify the derived analytic formulae and the proposed approach for phase retrieval and dewrapping. Results: According to theoretical analysis, the twin-peak phenomenon in PSC is a consequence of combined effects, including the inaccuracy in absorption grating G{sub 2}, mismatch between phase grating and x-ray source spectrum, and finite size of x-ray tube’s focal spot. The proposed approach is experimentally evaluated by scanning a phantom consisting of organic materials and a lab mouse. The preliminary data show that compared to scanning G{sub 2} over only one single nominal period and correcting the measured phase signal with an intuitive phase dewrapping method that is being used in the field, stepping G{sub 2} over twice its nominal period and dewrapping the measured phase signal with the proposed approach can significantly improve the quality of x-ray differential phase contrast imaging in both

Self-imaging effect of TM modes in photonic crystal multimode waveguides only exhibiting band gaps for TE modes

International Nuclear Information System (INIS)

Yu Tianbao; Jiang Xiaoqing; Yang Jianyi; Zhou Haifeng; Liao Qinghua; Wang Minghua

2007-01-01

This Letter presents the properties of transverse-magnetic (TM) modes in multimode photonic crystal waveguides (PCWs), which only exhibit photonic band gaps for transverse-electric (TE) modes. A good equivalent model is applied to analysis the designed structures on the basis of multimode interference effect and self-imaging principle. The performance shows that the TM modes can also be propagated with high efficiency, and resemble index-guided modes owing to the combination of total internal reflection (TIR) and distribution Bragg reflection. It provides a novel way to realize the components for both TM and TE polarizations by combining PBG and TIR effect in PCWs. As one of potential applications, polarization-insensitive power splitter based on the proposed structures can be designed

Apertureless near-field terahertz imaging using the self-mixing effect in a quantum cascade laser

Energy Technology Data Exchange (ETDEWEB)

Dean, Paul, E-mail: p.dean@leeds.ac.uk; Keeley, James; Kundu, Iman; Li, Lianhe; Linfield, Edmund H.; Giles Davies, A. [School of Electronic and Electrical Engineering, University of Leeds, Leeds LS2 9JT (United Kingdom); Mitrofanov, Oleg [Department of Electronic and Electrical Engineering, University College London, Torrington Place, London WC1E 7JE (United Kingdom)

2016-02-29

We report two-dimensional apertureless near-field terahertz (THz) imaging using a quantum cascade laser (QCL) source and a scattering probe. A near-field enhancement of the scattered field amplitude is observed for small tip-sample separations, allowing image resolutions of ∼1 μm (∼λ/100) and ∼7 μm to be achieved along orthogonal directions on the sample surface. This represents the highest resolution demonstrated to date with a THz QCL. By employing a detection scheme based on self-mixing interferometry, our approach offers experimental simplicity by removing the need for an external detector and also provides sensitivity to the phase of the reinjected field.

Dust Plate, Retina, Photograph: Imaging on Experimental Surfaces in Early Nineteenth-Century Physics.

Science.gov (United States)

Ramalingam, Chitra

2015-09-01

This article explores the entangled histories of three imaging techniques in early nineteenth-century British physical science, techniques in which a dynamic event (such as a sound vibration or an electric spark) was made to leave behind a fixed trace on a sensitive surface. Three categories of "sensitive surface" are examined in turn: first, a metal plate covered in fine dust; second, the retina of the human eye; and finally, a surface covered with a light-sensitive chemical emulsion (a photographic plate). For physicists Michael Faraday and Charles Wheatstone, and photographic pioneer William Henry Fox Talbot, transient phenomena could be studied through careful observation and manipulation of the patterns wrought on these different surfaces, and through an understanding of how the imaging process unfolded through time. This exposes the often-ignored materiality and temporality of epistemic practices around nineteenth-century scientific images said to be "drawn by nature."

Propagation stability of self-reconstructing Bessel beams enables contrast-enhanced imaging in thick media.

Science.gov (United States)

Fahrbach, Florian O; Rohrbach, Alexander

2012-01-17

Laser beams that can self-reconstruct their initial beam profile even in the presence of massive phase perturbations are able to propagate deeper into inhomogeneous media. This ability has crucial advantages for light sheet-based microscopy in thick media, such as cell clusters, embryos, skin or brain tissue or plants, as well as scattering synthetic materials. A ring system around the central intensity maximum of a Bessel beam enables its self-reconstruction, but at the same time illuminates out-of-focus regions and deteriorates image contrast. Here we present a detection method that minimizes the negative effect of the ring system. The beam's propagation stability along one straight line enables the use of a confocal line principle, resulting in a significant increase in image contrast. The axial resolution could be improved by nearly 100% relative to the standard light-sheet techniques using scanned Gaussian beams, while demonstrating self-reconstruction also for high propagation depths.

Body Image Self-Discrepancy and Depressive Symptoms Among Early Adolescents.

Science.gov (United States)

Solomon-Krakus, Shauna; Sabiston, Catherine M; Brunet, Jennifer; Castonguay, Andree L; Maximova, Katerina; Henderson, Mélanie

2017-01-01

This study examined whether body image self-discrepancy was a correlate of depressive symptoms among 556 early adolescents (45% girls; M age  = 11.65, SD = .94 years). Participants completed self-report measures of their self-perceived actual and ideal body shapes and depressive symptoms. Sex-stratified polynomial regressions were used to examine the associations between depressive symptoms and (1) agreement (i.e., similar actual and ideal body shapes); (2) discrepancy (i.e., different actual and ideal body shapes); (3) direction of discrepancy (i.e., actual > ideal or actual self-perceptions are). For both sexes, depressive symptoms were more frequent when the direction of the discrepancy was such that participants perceived their actual body was larger than their ideal body. Furthermore, depressive symptoms were more frequent when the degree of the discrepancy between actual and ideal body shape perceptions was larger. Based on these findings, body image self-discrepancy may be a risk factor for depressive symptoms among early adolescents. Copyright © 2016 Society for Adolescent Health and Medicine. Published by Elsevier Inc. All rights reserved.

Identifying and Assessing Self-Images in Drawings by Delinquent Adolescents (in 2 Parts).

Science.gov (United States)

Silver, Rawley; Ellison, JoAnne

1995-01-01

Examines assumption that art therapists can objectively identify self-images in drawings by troubled adolescents without talking to these youth. Findings suggest that discussion, though preferable, is not required for identifying self-images. Analysis of adolescents' drawings indicates that structured art assessment can be useful in evaluating…

Branding the Self on Yelp: Consumer Reviewing as Image Entrepreneurship

Directory of Open Access Journals (Sweden)

Kathleen M. Kuehn

2016-11-01

Full Text Available This research offers a case study of how consumer reviewing on Yelp.com is conceived by users as a viable platform for constructing and promoting a self-brand. A thematic analysis of 18 in-depth interviews conducted with Yelp reviewers examines the various practices and relations involved in the self-branding process. Findings reveal that authenticity, feedback, and positive affect are of central importance to the task of “image entrepreneurship.” Although consumer reviewers commodify their own image to build a reputation for others, participants recognize consumer reviewing and self-branding as mutually constituted sites of productivity with recognizable market value. At the same time, Yelp’s commercial nature complicates the potential range of agency and empowerment experienced. As a tool for self-branding, consumer reviewing is evaluated as a mechanism of the post-Fordist social factory in which notions of work are dispersed into all spheres of life.

Perbedaan Self-Image Remaja Laki-Laki dan Perempuan Penderita Acne Vulgaris

OpenAIRE

Nasution, Fauziah Nami

2016-01-01

The research aims to find out the differences self-images on adolescent boy’s Acne Vulgaris patient and on adolescent girl’s. Self-image is the mental picture of an individual about his physical appearance Jersild (1963). Acne vulgaris is a chronic inflammation of the follicle polisebasea characterized by comedones, papules, pustules, and cysts in predilection areas, such as the face, shoulders, chest, and back. The population of the research is senior students in Medan who have Acne Vulgaris...

Self-image of adolescents with mild intellectual disability in connection with social factors

OpenAIRE

Dolar Borštnar, Mojca

2015-01-01

The aim of this master’s thesis is to analyse common self-image of adolescents with mild intellectual disability in mental development and social factors that influence its formation. We used questionnaire as an instrument with which we investigated the following fields: self -contentment, social and intellectual status, anxiety, popularity and physical appearance. We have also analysed the connection between recognized general and academic self-image and reached educational achievement at th...

The effect of colorectal surgery in female sexual function, body image, self-esteem and general health: a prospective study.

Science.gov (United States)

da Silva, Giovanna M; Hull, Tracy; Roberts, Patricia L; Ruiz, Dan E; Wexner, Steven D; Weiss, Eric G; Nogueras, Juan J; Daniel, Norma; Bast, Jane; Hammel, Jeff; Sands, Dana

2008-08-01

To evaluate women's sexual function, self-esteem, body image, and health-related quality of life after colorectal surgery. Current literature lacks prospective studies that evaluate female sexuality/quality of life after colorectal surgery using validated instruments. Sexual function, self-esteem, body image, and general health of female patients undergoing colorectal surgery were evaluated preoperatively, at 6 and 12 months after surgery, using the Female Sexual Function Index, Rosenberg Self-Esteem scale, Body Image scale and SF-36, respectively. Ninety-three women with a mean age of 43.0 +/- 11.6 years old were enrolled in the study. Fifty-seven (61.3%) patients underwent pelvic and 36 (38.7%) underwent abdominal procedures. There was a significant deterioration in overall sexual function at 6 months after surgery, with a partial recovery at 12 months (P = 0.02). Self-esteem did not change significantly after surgery. Body image improved, with slight changes at 6 months and significant improvement at 12 months, compared with baseline (P = 0.05). Similarly, mental status improved over time with significant improvement at 12 months, with values superior than baseline (P = 0.007). Physical recovery was significantly better than baseline in the first 6 months after surgery with no significant further improvement between 6 and 12 months. Overall, there were no differences between patients who had abdominal procedures and those who underwent pelvic dissection, except that patients from the former group had faster physical recovery than patients in the latter (P = 0.031). When asked about the importance of discussing sexual issues, 81.4% of the woman stated it to be extremely or somewhat important. Surgical treatment of colorectal diseases leads to improvement in global quality of life. There is, however, a significant decline in sexual function postoperatively. Preoperative counseling is desired by most of the patients.

Self-adhesive microculture system for extended live cell imaging.

Science.gov (United States)

Skommer, J; McGuinness, D; Wlodkowic, D

2011-06-01

Gas permeable and biocompatible soft polymers are convenient for biological applications. Using the soft polymer poly(dimethylsiloxane) (PDMS), we established a straightforward technique for in-house production of self-adhesive and optical grade microculture devices. A gas permeable PDMS layer effectively protects against medium evaporation, changes in osmolarity, contamination and drug diffusion. These chip-based devices can be used effectively for long term mammalian cell culture and support a range of bioassays used in pharmacological profiling of anti-cancer drugs. Results obtained on a panel of hematopoietic and solid tumor cell lines during screening of investigative anti-cancer agents corresponded well to those obtained in a conventional cell culture on polystyrene plates. The cumulative correlation analysis of multiple cell lines and anti-cancer drugs showed no adverse effects on cell viability or cell growth retardation during microscale static cell culture. PDMS devices also can be custom modified for many bio-analytical purposes and are interfaced easily with both inverted and upright cell imaging platforms. Moreover, PDMS microculture devices are suitable for extended real time cell imaging. Data from the multicolor, real time analysis of apoptosis on human breast cancer MCF-7 cells provided further evidence that elimination of redundant centrifugation/washing achieved during microscale real time analysis facilitates preservation of fragile apoptotic cells and provides dynamic cellular information at high resolution. Because only small reaction volumes are required, such devices offer reduced use of consumables as well as simplified manipulations during all stages of live cell imaging.

The relationship between physical activity and self-image and problem behaviour among adolescents.

Science.gov (United States)

Kirkcaldy, B D; Shephard, R J; Siefen, R G

2002-11-01

Although there are a vast array of studies which have demonstrated the psychological and physical health benefits of regular aerobic exercise for adults, few studies have focussed on children and adolescents. The current study examined associations between the extent of participation in endurance sport, and self-report data on self-image, physical and psychological health and overall lifestyle in a large representative sample of German high-school students. Almost 1000 German adolescents (aged 14-18 years) were administered a comprehensive series of questionnaires aimed at assessing anxiety-depression, trait addiction, smoking and drinking behaviour, physical ill-health reports, and self-perception of self-image, parental acceptance and educational attainment. Regular practice of endurance exercise was related to a more favourable self-image. There was a strong association between participation in sports and the type of personality that tends to be resistant to drug and alcohol addiction. Physical exercise was further significantly related to scores for physical and psychological well-being. Adolescents who engaged regularly in physical activity were characterised by lower anxiety-depression scores, and displayed much less social behavioural inhibition than their less active counterparts. It is likely that discussion of recreational or exercise involvement may provide a useful point of entry for facilitating dialogue among adolescents about concerns relating to body image and self-esteem. In terms of psychotherapeutic applications, physical activity has many additional rewards for adolescents. It is probable that by promoting physical fitness, increased physical performance, lessening body mass and promoting a more favourable body shape and structure, exercise will provide more positive social feedback and recognition from peer groups, and this will subsequently lead to improvement in an individual's self-image.

Individual Factors Affecting Self-esteem, and Relationships Among Self-esteem, Body Mass Index, and Body Image in Patients With Schizophrenia.

Science.gov (United States)

Oh, EunJung; Song, EunJu; Shin, JungEun

2017-12-01

The purposes of this study were to identify correlations between body mass index, body image, and self-esteem in patients with schizophrenia and to analyse the specific factors affecting self-esteem. This study had a descriptive design, utilising a cross-sectional survey. Participants were patients with schizophrenia who were admitted to a mental health facility in South Korea. A total of 180 questionnaires were distributed, and an appropriate total sample size of 167 valid questionnaires was analysed. Self-esteem was significantly correlated with body image, the subscale of appearance orientation, and body areas satisfaction. However, body mass index exhibited no significant correlation with any variable. The variables found to have a significant explanatory power of 21.4% were appearance orientation and body areas satisfaction. The explanatory power of all factors was 33.6%. The self-esteem of patients with schizophrenia was influenced by body mass index and body image. The positive symptoms of schizophrenia can be controlled by medication, whereas negative symptoms can be improved through education and nursing care with medication. Thus, psychiatric nurses should develop education and care programs that contribute to the positive body image and self-esteem of patients with schizophrenia. Copyright © 2017 Elsevier Inc. All rights reserved.

Self-Concept in Childhood: The Role of Body Image and Sport Practice

Science.gov (United States)

Mendo-Lázaro, Santiago; Polo-del-Río, María I.; Amado-Alonso, Diana; Iglesias-Gallego, Damián; León-del-Barco, Benito

2017-01-01

The purpose of this study was to explore the differences in satisfaction with body image depending on whether the subject practices organized sport or not, as well as the gender of the children. In addition, the study aims to examine the role of body image and the practice of organized sport on the process of building the academic, social, emotional, family and physical dimensions of self-concept in childhood. To do so, a sample of 944 pupils was used. These children were attending primary school in different centers of the Autonomous Community of Extremadura (Spain) and were between 9 and 12 years of age. The main results of the study show that three out of every four children participating in this study were not satisfied with their figure and one out of every five was very dissatisfied. The satisfaction or dissatisfaction with the figure was similar in boys and girls, although it could be appreciated that the ideal body image is partly conditioned by gender stereotypes. The children most satisfied with their body image had a greater academic and physical self-concept. The children that practiced organized sports had a greater physical and emotional self-concept. The children most dissatisfied with their body image and practiced organized sports had a lower family self-concept. All these findings are discussed with reference to previous research literature. PMID:28596750

Study of adolescents’ multifactorial self-image components based on their own self-characterizations

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Horvath, Zsofia Iren

2012-12-01

Full Text Available The most important questions of human existence and development – Who am I? What am I like? – concerned every thinking human in all cultural-historical ages. These questions remain timely even in our rapidly changing postmodern society.The goal of our research is the examination of adolescents’ self-characterization, the outlining of the self-image components age characteristics, the establishment of differences resulting from their environment. Our examination is part of the 2005/2006 school year evaluation (Pletl, 2011 regarding Transylvanian students’ composition skills. In the present research we have analyzed a total of 1602 self-characterization of Transylvanian Hungarian students. Results show that fifth grade students have dichotomous thinking that becomes more sophisticated by the time they get into the eighth grade. Eighth grade students referred significantly more often to the categories Emotions, Satisfaction, Social attitudes, School achievement, Special interests and mentioned more personality traits. In the comparison by location, more similarities and fewer differences were outlined. However, urban students referred significantly more often to emotions and satisfaction, while rural students mentioned more frequently characteristics like good-hearted and diligent. The study also outlined two major deficiencies. No significant difference was found between the two grades in naming abilities, and referring to Science and Language. We strongly believe that school should be more than simply a place for traditional teaching; effective education and personal development should spread to new areas like the development of self-reflective thinking, the shaping of personal competence and the operation of Career and Vocational Counseling.

Content-based image retrieval using a signature graph and a self-organizing map

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Van Thanh The

2016-06-01

Full Text Available In order to effectively retrieve a large database of images, a method of creating an image retrieval system CBIR (contentbased image retrieval is applied based on a binary index which aims to describe features of an image object of interest. This index is called the binary signature and builds input data for the problem of matching similar images. To extract the object of interest, we propose an image segmentation method on the basis of low-level visual features including the color and texture of the image. These features are extracted at each block of the image by the discrete wavelet frame transform and the appropriate color space. On the basis of a segmented image, we create a binary signature to describe the location, color and shape of the objects of interest. In order to match similar images, we provide a similarity measure between the images based on binary signatures. Then, we present a CBIR model which combines a signature graph and a self-organizing map to cluster and store similar images. To illustrate the proposed method, experiments on image databases are reported, including COREL,Wang and MSRDI.

X-ray phase-contrast computed tomography visualizes the microstructure and degradation profile of implanted biodegradable scaffolds after spinal cord injury

Energy Technology Data Exchange (ETDEWEB)

Takashima, Kenta, E-mail: takashima-k@med.tohoku.ac.jp [Tohoku University Graduate School of Medicine, Sendai (Japan); University of Tokyo, Tokyo (Japan); Hoshino, Masato; Uesugi, Kentaro; Yagi, Naoto [SPring-8, Hyogo (Japan); Matsuda, Shojiro [Gunze Limited, Shiga (Japan); Nakahira, Atsushi [Osaka Prefecture University, Osaka (Japan); Osumi, Noriko; Kohzuki, Masahiro [Tohoku University Graduate School of Medicine, Sendai (Japan); Onodera, Hiroshi [University of Tokyo, Tokyo (Japan)

2015-01-01

X-ray phase-contrast computed tomography imaging based on the Talbot grating interferometer is described, and the way it can visualize the polyglycolic acid scaffold, including its microfibres, after implantation into the injured spinal cord is shown. Tissue engineering strategies for spinal cord repair are a primary focus of translational medicine after spinal cord injury (SCI). Many tissue engineering strategies employ three-dimensional scaffolds, which are made of biodegradable materials and have microstructure incorporated with viable cells and bioactive molecules to promote new tissue generation and functional recovery after SCI. It is therefore important to develop an imaging system that visualizes both the microstructure of three-dimensional scaffolds and their degradation process after SCI. Here, X-ray phase-contrast computed tomography imaging based on the Talbot grating interferometer is described and it is shown how it can visualize the polyglycolic acid scaffold, including its microfibres, after implantation into the injured spinal cord. Furthermore, X-ray phase-contrast computed tomography images revealed that degradation occurred from the end to the centre of the braided scaffold in the 28 days after implantation into the injured spinal cord. The present report provides the first demonstration of an imaging technique that visualizes both the microstructure and degradation of biodegradable scaffolds in SCI research. X-ray phase-contrast imaging based on the Talbot grating interferometer is a versatile technique that can be used for a broad range of preclinical applications in tissue engineering strategies.

Investment in body image for self-definition results in greater vulnerability to the thin media than does investment in appearance management.

Science.gov (United States)

Ip, Karen; Jarry, Josée L

2008-03-01

This study investigated the effect of thin images according to two dimensions of body-image (BI) investment. Ninety-five females were classified as high or low investors based on the Appearance Schemas Inventory-Revised Self-Evaluative Salience (SES) and Motivational Salience (MS) subscales. Participants viewed advertisements portraying either the thin ideal or products. Results indicated that both women high in SES and MS reported lowered appearance self-esteem but greater BI importance following thin exposures. However, only the high SES group reported greater BI dissatisfaction and importance of current-ideal discrepancies after seeing thin images. Although highly invested women (regardless of their motivation for investment) are more responsive to thin media images than are women low in investment, those invested for self-definition are affected on more dimensions than are those invested for appearance management.

The Idealized Self-Image and the Development of Learned Resourcefulness.

Science.gov (United States)

Susskind, Dorothy J.

Behavior therapy is by no means simplistic and mechanistic. It is possible to expand the horizons of behavior therapy to include such concepts as cognition and awareness without resorting to mentalistic or Freudian speculation. A new technique, the Idealized Self-Image (ISI) has been devised for the enhancement of self-esteem and learned…

The Effects of Aerobic Exercise on Body Image Attitudes in Women

OpenAIRE

Sareh Zar-Shenas; Ashraf Karbalaaei-Nouri; Seyyed-Ali Hosseini; Mahdi Rahgozar; Reza Seyed-Nour; Nahaleh Moshtagh

2010-01-01

Objective: Sociocultural emphasis and increased interest in physical attractiveness and current attitudes body structure have increased body image dissatisfaction among women. The prevalence of body image dissatisfaction is linked with various psychological disorders and disturbances such as low self-esteem, depression and other disorders. The present study investigated the short program aerobic exercise effects on body image among women. Materials & Methods: In this interventional and qu...

Self-image and value orientations of adolescents

Directory of Open Access Journals (Sweden)

Joksimović Snežana

2008-01-01

Full Text Available Self-image or self-consciousness comprises thoughts, feelings, evaluations and predictions about oneself and one's own behavior. Subject of the research is the linkage between self-conceptualization of adolescents and their value orientations. The aim is to determine whether there exists a correlation between locus of control and general self-esteem as elements of self-conceptualisation, on the one side, and value orientations of adolescents on the other. The Rosenberg Self-Esteem Scale and the locus of control scale by Bezinović and Savčić were used for studying the components of self-conceptualisation. Values were operationalised using the desirability of certain goals in life and preference of different lifestyles. Research was conducted on the sample of 176 grammar school pupils aged 15 to 18. The findings indicate that adolescents who are characterized by the external locus of control accept hedonist, activist, social and cognitive lifestyle in a larger degree. Self-esteem is positively correlated with the aspiration towards becoming rich, and negatively with the desire for acquiring knowledge, care about others and activist way of living. The finding that the young of higher self-esteem are not oriented towards education, helping others and advocating for common good, can be ascribed to insufficient appreciation of these values in the environment they live in. The obtained findings point out to the need to reaffirm and encourage these values in youth, as well as to pay more attention to value education of pupils in school.

Gender Related Differences in Response to “In Favor of Myself” Wellness Program to Enhance Positive Self & Body Image among Adolescents

OpenAIRE

Golan, Moria; Hagay, Noa; Tamir, Snait

2014-01-01

BACKGROUND: Physical, neurological and psychological changes are often experienced differently by male and female adolescents. Positive self-esteem, emotional well-being, school achievements, and family connectedness are considered as protective factors against health-compromising behaviors. This study examines the gender differences in respect to the effect of a school-based interactive wellness program--"In Favor of Myself"--on self-image, body image, eating attitudes and behaviors of young...

Evaluation of body image and self-esteem in patients with external fixation devices: a Turkish perspective.

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Büyükyilmaz, Funda; Sendir, Merdiye; Salmond, Susan

2009-01-01

This descriptive study aimed to describe the body image and self-esteem of patients with external fixation devices. Fifty patients with external fixation devices who came for follow-up to the Ilizarov Outpatient Clinic of a university hospital in Turkey were included in this study. Data were collected by using a Demographic Questionnaire Form, Multidimensional Body-Self Relations Questionnaire (MBSRQ), and Coppersmith Self-Esteem Inventory. The perceived body image (197.58 +/- 25.14) and self-esteem (65.28 +/- 17.97) of the patients with external fixation devices were in the moderate range. There was no significant correlation between body image and self-esteem. Self-esteem was correlated with one's perception of whether external fixation impacted one's appearance and whether one wanted to avoid being seen by certain individuals because of the appearance of the external fixator. The study highlighted that body image disturbance and threats to self-esteem are not universal with the use of external fixation and need to be assessed individually.

Body Image Concerns and Contingent Self-Esteem in Male and Female College Students.

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Grossbard, Joel R; Lee, Christine M; Neighbors, Clayton; Larimer, Mary E

2009-02-01

Body dissatisfaction in females, and to a lesser extent males, is associated with low self-esteem, depression, and eating disorders. This research examined gender as a moderator of the association between contingent self-esteem and body image concerns, including weight and muscularity. Participants included 359 (59.1% female) heavy drinking first-year U.S. undergraduate students who completed a survey assessing health-related risk behaviors. Hierarchical multiple regression was used to examine relations among gender, contingent self-esteem, and body image. Females reported higher levels of contingent self-esteem and greater concerns about their weight, although males reported a greater drive for muscularity. The relationship between contingent self-esteem and weight concerns was stronger among females, and for males, greater contingent self-esteem was associated with a greater drive for muscularity.

Symbolic Purchase in Sports Marketing: The Effect of Perceived Quality and Self-image Congruity on Intention to Purchase; A Field Study in Turkey

OpenAIRE

FETTAHLIOĞLU, Seçil; EREN, Arif Selim; FETTAHLIOĞLU, Ömer Okan; BİLGİNER, Mesut

2016-01-01

Modern life urges people to meet their needs for communication faster and more effective than ever. As a result of this fact people spend more and more time in front of the computer and other means of communication. Thus, mankind moves less and the need to keep fit becomes more important. So, people involve much more in sports facilities and this means consumption of sports equipment and other tools of sports marketing. The present study aims to investigate the effect of self-image congruity ...

Changes across age groups in self-choice elaboration effects on incidental memory.

Science.gov (United States)

Toyota, Hiroshi; Konishi, Tomoko

2004-08-01

The present study investigated age differences in the effects of a self-choice elaboration and an experimenter-provided elaboration on incidental memory. Adults, sixth grade, and second grade subjects chose which of two sentence frames the target fit better in a self-choice elaboration condition. They then judged whether each target made sense in its sentence frame in the experimenter-provided elaboration, then did free recall tests. Only adults recalled better the targets with an image sentence with self-choice elaboration, rather than experimenter-provided elaboration. However, self-choice elaboration was far superior for the recall of targets with nonimage sentences only for second graders. Thus, the effects of self-choice elaboration were determined both by age and by type of sentence frame.

Image charge models for accurate construction of the electrostatic self-energy of 3D layered nanostructure devices

Science.gov (United States)

Barker, John R.; Martinez, Antonio

2018-04-01

Efficient analytical image charge models are derived for the full spatial variation of the electrostatic self-energy of electrons in semiconductor nanostructures that arises from dielectric mismatch using semi-classical analysis. The methodology provides a fast, compact and physically transparent computation for advanced device modeling. The underlying semi-classical model for the self-energy has been established and validated during recent years and depends on a slight modification of the macroscopic static dielectric constants for individual homogeneous dielectric regions. The model has been validated for point charges as close as one interatomic spacing to a sharp interface. A brief introduction to image charge methodology is followed by a discussion and demonstration of the traditional failure of the methodology to derive the electrostatic potential at arbitrary distances from a source charge. However, the self-energy involves the local limit of the difference between the electrostatic Green functions for the full dielectric heterostructure and the homogeneous equivalent. It is shown that high convergence may be achieved for the image charge method for this local limit. A simple re-normalisation technique is introduced to reduce the number of image terms to a minimum. A number of progressively complex 3D models are evaluated analytically and compared with high precision numerical computations. Accuracies of 1% are demonstrated. Introducing a simple technique for modeling the transition of the self-energy between disparate dielectric structures we generate an analytical model that describes the self-energy as a function of position within the source, drain and gated channel of a silicon wrap round gate field effect transistor on a scale of a few nanometers cross-section. At such scales the self-energies become large (typically up to ~100 meV) close to the interfaces as well as along the channel. The screening of a gated structure is shown to reduce the self

Association between Body Image Dissatisfaction and Self-Rated Health, as Mediated by Physical Activity and Eating Habits: Structural Equation Modelling in ELSA-Brasil.

Science.gov (United States)

de Oliveira da Silva, Patricia; Miguez Nery Guimarães, Joanna; Härter Griep, Rosane; Caetano Prates Melo, Enirtes; Maria Alvim Matos, Sheila; Del Carmem Molina, Maria; Maria Barreto, Sandhi; de Jesus Mendes da Fonseca, Maria

2018-04-18

This study investigated whether the association between body image dissatisfaction and poor self-rated health is mediated by insufficient physical activity and unhealthy eating habits. The participants were 6727 men and 8037 women from the baseline (2008–2010) of the Longitudinal Study of Adult Health (Estudo Longitudinal de Saúde do Adulto, ELSA-Brasil). Structural equation modelling was used. Associations were found between body image dissatisfaction and poor self-rated health in both sexes. Insufficient physical activity was a mediator. However, unhealthy eating habits were found to exert a mediator effect only via insufficient physical activity. Body image dissatisfaction was found to associate, both directly and possibly indirectly, with poor self-rated health, mediated by insufficient physical activity and unhealthy eating habits. Accordingly, encouraging physical activity and healthy eating can contribute to reducing body image dissatisfaction and favour better self-rated health.

Self-image and suicidal and violent behaviours of adolescent girls

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Katarzyna Sitnik-Warchulska

2016-05-01

Full Text Available Background An increase in self-destructive and aggressive behaviours in adolescents has been observed in recent years. The present study focused on self-perception of adolescent girls who show different types of extreme destructive behaviours (suicidal or violent. The main aim of the study was to identify personality predictors of suicidal and violent behaviour in adolescent girls. Participants and procedure The study involved 163 female participants aged 13-17 years, including 44 suicide attempters (without extreme aggressive behaviour towards others, 46 girls using violence against others (without extreme self-destructive behaviour and 77 girls exhibiting no destructive behaviour. The following research methods were applied: the Adjective Checklist (ACL (versions “What am I like?” and “What would I like to be?”, and the Sentence Completion Test. Results The girls showing extreme destructive behaviour, particularly self-destructive behaviour, were found to have a more negative self-image, a lower level of consistency of the self-image, lower self-esteem and a higher level of inner conflict than the control group. Stepwise discriminant analysis was used to determine predictors of extreme self-destructive or aggressive behaviours. Escalated inner conflicts within the attitude towards oneself appear to be the most important predictor of suicidal behaviour in adolescent girls, whereas self-perception based on strength seems to be the most significant predictor of violent behaviour in adolescent girls. Conclusions The research showed that destructive behaviour among adolescents is a multidimensional phenomenon. The statistical model presented in the study has been proved to have a high value. The results can help in successful prevention and therapy of destructive behaviours in adolescents.

Colour segmentation of multi variants tuberculosis sputum images using self organizing map

Science.gov (United States)

Rulaningtyas, Riries; Suksmono, Andriyan B.; Mengko, Tati L. R.; Saptawati, Putri

2017-05-01

Lung tuberculosis detection is still identified from Ziehl-Neelsen sputum smear images in low and middle countries. The clinicians decide the grade of this disease by counting manually the amount of tuberculosis bacilli. It is very tedious for clinicians with a lot number of patient and without standardization for sputum staining. The tuberculosis sputum images have multi variant characterizations in colour, because of no standardization in staining. The sputum has more variants colour and they are difficult to be identified. For helping the clinicians, this research examined the Self Organizing Map method for colouring image segmentation in sputum images based on colour clustering. This method has better performance than k-means clustering which also tried in this research. The Self Organizing Map could segment the sputum images with y good result and cluster the colours adaptively.

Spirituality among College Freshmen: Relationships To Self-Esteem, Body Image, and Stress

Science.gov (United States)

Hayman, Jessie Wetherbe; Kurpius, Sharon Robinson; Befort, Christy; Nicpon, Megan Foley; Hull-Blanks, Elva; Sollenberger, Sonja; Huser, Laura

2007-01-01

The authors investigated the relationships between spirituality, body image, self-esteem, and stress in 204 college freshmen who identified themselves as being highly spiritual. A positive relationship was found between spirituality and self-esteem. Although self-esteem was found to be negatively related to stress, spirituality served as a buffer…

Adaptive pseudo-color enhancement method of weld radiographic images based on HSI color space and self-transformation of pixels

Science.gov (United States)

Jiang, Hongquan; Zhao, Yalin; Gao, Jianmin; Gao, Zhiyong

2017-06-01

The radiographic testing (RT) image of a steam turbine manufacturing enterprise has the characteristics of low gray level, low contrast, and blurriness, which lead to a substandard image quality. Moreover, it is not conducive for human eyes to detect and evaluate defects. This study proposes an adaptive pseudo-color enhancement method for weld radiographic images based on the hue, saturation, and intensity (HSI) color space and the self-transformation of pixels to solve these problems. First, the pixel's self-transformation is performed to the pixel value of the original RT image. The function value after the pixel's self-transformation is assigned to the HSI components in the HSI color space. Thereafter, the average intensity of the enhanced image is adaptively adjusted to 0.5 according to the intensity of the original image. Moreover, the hue range and interval can be adjusted according to personal habits. Finally, the HSI components after the adaptive adjustment can be transformed to display in the red, green, and blue color space. Numerous weld radiographic images from a steam turbine manufacturing enterprise are used to validate the proposed method. The experimental results show that the proposed pseudo-color enhancement method can improve image definition and make the target and background areas distinct in weld radiographic images. The enhanced images will be more conducive for defect recognition. Moreover, the image enhanced using the proposed method conforms to the human eye visual properties, and the effectiveness of defect recognition and evaluation can be ensured.

Adaptive pseudo-color enhancement method of weld radiographic images based on HSI color space and self-transformation of pixels.

Science.gov (United States)

Jiang, Hongquan; Zhao, Yalin; Gao, Jianmin; Gao, Zhiyong

2017-06-01

The radiographic testing (RT) image of a steam turbine manufacturing enterprise has the characteristics of low gray level, low contrast, and blurriness, which lead to a substandard image quality. Moreover, it is not conducive for human eyes to detect and evaluate defects. This study proposes an adaptive pseudo-color enhancement method for weld radiographic images based on the hue, saturation, and intensity (HSI) color space and the self-transformation of pixels to solve these problems. First, the pixel's self-transformation is performed to the pixel value of the original RT image. The function value after the pixel's self-transformation is assigned to the HSI components in the HSI color space. Thereafter, the average intensity of the enhanced image is adaptively adjusted to 0.5 according to the intensity of the original image. Moreover, the hue range and interval can be adjusted according to personal habits. Finally, the HSI components after the adaptive adjustment can be transformed to display in the red, green, and blue color space. Numerous weld radiographic images from a steam turbine manufacturing enterprise are used to validate the proposed method. The experimental results show that the proposed pseudo-color enhancement method can improve image definition and make the target and background areas distinct in weld radiographic images. The enhanced images will be more conducive for defect recognition. Moreover, the image enhanced using the proposed method conforms to the human eye visual properties, and the effectiveness of defect recognition and evaluation can be ensured.

The effect of interpersonal rejection on attentional biases regarding thin-ideal and non-thin images: The moderating role of body weight- and shape-based self-worth.

Science.gov (United States)

Rieger, Elizabeth; Dolan, Ashleigh; Thomas, Brittany; Bell, Jason

2017-09-01

Interpersonal dysfunction and weight/shape-based self-worth have been implicated as key constructs for eating disorders, although the relationship between these two concepts is under-researched. This study investigated the moderating role of weight/shape-based self-worth in terms of the impact of interpersonal rejection on attentional bias regarding thin-ideal and non-thin images. Participants were 94 females without an eating disorder, who were exposed to either interpersonal rejection or acceptance (using the Cyberball paradigm), and subsequently assessed in terms of their attentional biases regarding thin-ideal and non-thin images. Results revealed that weight/shape-based self-worth moderated the relationship between interpersonal rejection/acceptance and attentional biases for thin-ideal (but not non-thin) images. Specifically, participants with a greater tendency to base their self-worth on weight/shape demonstrated reduced avoidance of thin-ideal images when rejected relative to those who were accepted. The findings support the role of interpersonal rejection in eliciting attentional disturbances among those with higher body weight/shape-based self-worth. Copyright © 2017 Elsevier Ltd. All rights reserved.

Surgical correction of pectus carinatum improves perceived body image, mental health and self-esteem.

Science.gov (United States)

Knudsen, Marie Veje; Grosen, Kasper; Pilegaard, Hans K; Laustsen, Sussie

2015-09-01

The purpose of this study was to assess the effects of surgical correction of pectus carinatum on health-related quality of life and self-esteem. Between May 2012 and May 2013, a prospective observational single-center cohort study was conducted on consecutive patients undergoing surgical correction of pectus carinatum at our institution. Patients filled in questionnaires on health-related quality of life and self-esteem before and six months after surgery. Disease-specific health-related quality of life was improved by 33% (95% CI: 23; 44%) according to responses to the Nuss Questionnaire modified for Adults. The improvement for generic mental health-related quality of life was 7% (95% CI: 3; 12%) in responses to the Short Form-36 Questionnaire. The improvement in self-esteem was 9% (95% CI: 2; 17%) as assessed with the Rosenberg Self-Esteem Scale. A Single Step Questionnaire supported the improvements in health-related quality of life and self-esteem six months postsurgery. This study confirms positive effects of surgical correction of pectus carinatum on health-related quality of life and self-esteem. Patients were to a greater extent self-satisfied about chest appearance following surgery, indicating this to be a step in the right direction toward improved body image, mental health and self-esteem. Copyright © 2015 Elsevier Inc. All rights reserved.

My Body Looks Like That Girl's: Body Mass Index Modulates Brain Activity during Body Image Self-Reflection among Young Women.

Science.gov (United States)

Gao, Xiao; Deng, Xiao; Wen, Xin; She, Ying; Vinke, Petra Corianne; Chen, Hong

2016-01-01

Body image distress or body dissatisfaction is one of the most common consequences of obesity and overweight. We investigated the neural bases of body image processing in overweight and average weight young women to understand whether brain regions that were previously found to be involved in processing self-reflective, perspective and affective components of body image would show different activation between two groups. Thirteen overweight (O-W group, age = 20.31±1.70 years) and thirteen average weight (A-W group, age = 20.15±1.62 years) young women underwent functional magnetic resonance imaging while performing a body image self-reflection task. Among both groups, whole-brain analysis revealed activations of a brain network related to perceptive and affective components of body image processing. ROI analysis showed a main effect of group in ACC as well as a group by condition interaction within bilateral EBA, bilateral FBA, right IPL, bilateral DLPFC, left amygdala and left MPFC. For the A-W group, simple effect analysis revealed stronger activations in Thin-Control compared to Fat-Control condition within regions related to perceptive (including bilateral EBA, bilateral FBA, right IPL) and affective components of body image processing (including bilateral DLPFC, left amygdala), as well as self-reference (left MPFC). The O-W group only showed stronger activations in Fat-Control than in Thin-Control condition within regions related to the perceptive component of body image processing (including left EBA and left FBA). Path analysis showed that in the Fat-Thin contrast, body dissatisfaction completely mediated the group difference in brain response in left amygdala across the whole sample. Our data are the first to demonstrate differences in brain response to body pictures between average weight and overweight young females involved in a body image self-reflection task. These results provide insights for understanding the vulnerability to body image distress

Expand Your Horizon: A programme that improves body image and reduces self-objectification by training women to focus on body functionality.

Science.gov (United States)

Alleva, Jessica M; Martijn, Carolien; Van Breukelen, Gerard J P; Jansen, Anita; Karos, Kai

2015-09-01

This study tested Expand Your Horizon, a programme designed to improve body image by training women to focus on the functionality of their body using structured writing assignments. Eighty-one women (Mage=22.77) with a negative body image were randomised to the Expand Your Horizon programme or to an active control programme. Appearance satisfaction, functionality satisfaction, body appreciation, and self-objectification were measured at pretest, posttest, and one-week follow-up. Following the intervention, participants in the Expand Your Horizon programme experienced greater appearance satisfaction, functionality satisfaction, and body appreciation, and lower levels of self-objectification, compared to participants in the control programme. Partial eta-squared effect sizes were of small to medium magnitude. This study is the first to show that focusing on body functionality can improve body image and reduce self-objectification in women with a negative body image. These findings provide support for addressing body functionality in programmes designed to improve body image. Copyright © 2015 Elsevier Ltd. All rights reserved.

Health perceptions, self and body image, physical activity and nutrition among undergraduate students in Israel.

Science.gov (United States)

Korn, Liat; Gonen, Ester; Shaked, Yael; Golan, Moria

2013-01-01

This study examines health perceptions, self and body image, physical exercise and nutrition among undergraduate students. A structured, self-reported questionnaire was administered to more than 1500 students at a large academic institute in Israel. The study population was heterogenic in both gender and fields of academic study. High correlations between health perceptions, appropriate nutrition, and positive self and body image were found. The relationships between these variables differed between the subpopulation in the sample and the different genders. Engagement in physical exercise contributed to positive body image and positive health perceptions more than engagement in healthy nutrition. Nutrition students reported higher frequencies of positive health perceptions, positive self and body image and higher engagement in physical exercise in comparison to all other students in the sample. This study suggests, as have many before, that successful health promotion policy should reflect a collectivist rather than an individualist ethos by providing health prerequisites through a public policy of health-promotion, where the academic settings support a healthy lifestyle policy, by increasing availability of a healthy, nutritious and varied menu in the cafeterias, and offering students various activities that enhance healthy eating and exercise. IMPLICATIONS AND CONTRIBUTION: This study examined health perceptions, self-image, physical exercise and nutrition among undergraduate students and found high correlations between these topics. Nutrition students reported higher frequencies of positive health perceptions, and positive self and body image and engaged more in physical exercise when compared with all other students in the sample.

densities and biomasses of some ungulate populations in eastern

African Journals Online (AJOL)

environments free from any human intervention (with the exception of bush fires spreading from surrounding ..... Simba. The life of the lion. Cape Town. Timmins. HOLLOWAY, C. w. 1962. The effect of ... TALBOT, L. M. and TALBOT, M. H. 1963.

[Self-images and perceptions of other professions among students of nursing, physiotherapy, and occupational therapy and their importance for interprofessional cooperation].

Science.gov (United States)

Boggatz, Thomas; Altmeppen, Sandra; Unger, Angelika

2010-07-01

Interdisciplinary cooperation is necessary to provide effective and high quality treatment for clients of the health care system. Interaction between professional groups depends on how their members perceive their self-image and the image of other professions. Within the framework of the project "Quality in the education of health-professionals" a qualitative study with 23 nurses, 24 physiotherapists and 15 occupational therapists in the second or third year of training was conducted. Participants were asked to report their self-image and the image of the other two professions. A qualitative content analysis according to Mayring was used for data analysis. Four categories emerged that allowed describing the self image and the image of the other professions: roles of the respective health professions, relation of the health professionals to their clients, attributes that typically characterized members of a particular profession, and relationship between the health professions. Latent conflicts between professional groups became apparent. Contradicting perceptions are due to subjective bias in favour of the own professional group. Interdisciplinary collaboration requires a new culture of co-operation.

Self-compassion moderates the relationship between body mass index and both eating disorder pathology and body image flexibility.

Science.gov (United States)

Kelly, Allison C; Vimalakanthan, Kiruthiha; Miller, Kathryn E

2014-09-01

The current study examined whether self-compassion, the tendency to treat oneself kindly during distress and disappointments, would attenuate the positive relationship between body mass index (BMI) and eating disorder pathology, and the negative relationship between BMI and body image flexibility. One-hundred and fifty-three female undergraduate students completed measures of self-compassion, self-esteem, eating disorder pathology, and body image flexibility, which refers to one's acceptance of negative body image experiences. Controlling for self-esteem, hierarchical regressions revealed that self-compassion moderated the relationships between BMI and the criteria. Specifically, the positive relationship between BMI and eating disorder pathology and the negative relationship between BMI and body image flexibility were weaker the higher women's levels of self-compassion. Among young women, self-compassion may help to protect against the greater eating disturbances that coincide with a higher BMI, and may facilitate the positive body image experiences that tend to be lower the higher one's BMI. Copyright © 2014 Elsevier Ltd. All rights reserved.

Psychological Impact of Virtual Reality Gaming on the Formation of Self-Image in Early School-Age Children

OpenAIRE

Pakhomova V.G.,

2017-01-01

The article investigates the problem of interaction between a modern primary school-aged child and the field of virtual reality gaming and, in particular, the impact of virtual reality on the formation of self-image. Our study enabled us to explore the differences in the self-image in active and non-active players of roleplaying video games. The outcomes proved that there are certain changes in the self-image of active players related to their self-identification with characters of computer g...

Body Image, self-esteem, and clothing of men and women aged 55 years and older

OpenAIRE

Hwang, Jinsook

1993-01-01

Although there are many studies regarding body image of younger people, there have been few studies on that of older people. Since today's culture considers the young, thin body image ideal, it is important to investigate body image of older people and the relationships between their body image, self esteem, and clothing behavior. The purpose of this study was to determine the relationships between 1) body-cathexis and self-esteem, 2) body-cathexis and clothing behavio...

Association of sociodemographic and clinical factors with the self-image and self-esteem of individuals with intestinal stoma

Directory of Open Access Journals (Sweden)

Geraldo Magela Salomé

2014-07-01

Full Text Available Objective: To evaluate the clinical and sociodemographic factors and correlate them to the self-image and self-esteem. Methods: A study conducted at Ostomy Pole of PousoAlegre. The data were collected between December 2012 and May 2013. This was a non-probabilistic, by convenience, sample. For data collection, the Rosenberg Self-Esteem Scale/UNIFESP-EPM and Body Investment Scale were used. For statistical analysis, chi-squared test, Kruskal–Wallis test and Spearman correlation were used. Levels of significance of 5% (p ≤ 0.05 were considered. Results: Participants had a mean score of 10.81 in the Rosenberg Self-Esteem Scale/UNIFESP. Regarding Body Investment Scale results, the mean total score was 38.79; the mean in the domain of body image was 7.74, and for personal touch, 21.31. When comparing data related to the stoma and sociodemographic profiles with the Rosenberg Self-Esteem Scale/UNIFESP and Body Investment Scale, we realize that all patients demonstrated a decrease in self-esteem and self-image. Individuals were over 60 years old, male, retired, married and were not participants in support group/association. With regard to the characteristics of the stoma, those permanent colostomized had as causes of stoma implementation inflammatory disease and neoplasia; stomata measured between 20 and 40 mm; these people used two-piece devices. People who have not been notified that would be subjected to the stoma and in whom no demarcation was done showed worsening in self-esteem and self-image in relation to other features related to injury and sociodemographic data. Conclusion: Patients who participated in this study had low self-image and self-esteem in all characteristics of the stoma and in sociodemographic data, meaning that these individuals had negative feelings about their own bodies. Resumo: Objetivo: Avaliar os fatores sociodemográficos e clínicos e correlacioná-los à autoimagem e autoestima. Métodos: Estudo realizado no Polo

Adolescents' Body Image Trajectories: A Further Test of the Self-Equilibrium Hypothesis

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Morin, Alexandre J. S.; Maïano, Christophe; Scalas, L. Francesca; Janosz, Michel; Litalien, David

2017-01-01

The self-equilibrium hypothesis underlines the importance of having a strong core self, which is defined as a high and developmentally stable self-concept. This study tested this hypothesis in relation to body image (BI) trajectories in a sample of 1,006 adolescents (M[subscript age] = 12.6, including 541 males and 465 females) across a 4-year…

Self-image profile in children and adolescents with attention deficit/ hyperactivity disorder and the quality of life in their parents.

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Gormez, Vahdet; Forbes, Fiona C M

2015-01-01

We explored the impact of clinical response to treatment for Attention Deficit/Hyperactivity Disorder (ADHD) in children and adolescents on the subsequent changes in their self-image profile, the quality of life of their parents, and its effect on socio-demographic variables. Conners Rating Scales for Parents (CPRS-R) and for Teachers (CTRS-R) completed at the time of entry to the service were repeated to measure clinical response to treatment; the Self-image Profiles for Children (SIP-C) and Adolescents (SIP-A), the World Health Organization Quality of Life (WHOQoL) questionnaire and postcode data were used to evaluate other domains. Data was collected for 53 boys (84%) and 10 girls (16%) with current mean age 11.5 years. Four-fifths (51/63) received pharmacological treatment and all parents were offered group parent training program. The only subscale in CPRS-R to show significance was the ADHD Index. The CTRS-R demonstrated statistically significant improvement (p Self-image Profile, children reported themselves as more Kind (p Self-image Profile of children and adolescents, but its impact on the QoL in parents was limited. © 2015 The Author(s).

Self-rumination, self-reflection, and depression: self-rumination counteracts the adaptive effect of self-reflection.

Science.gov (United States)

Takano, Keisuke; Tanno, Yoshihiko

2009-03-01

Self-focused attention has adaptive and maladaptive aspects: self-reflection and self-rumination [Trapnell, P. D., & Campbell, J. D. (1999). Private self-consciousness and the Five-Factor Model of personality: distinguishing rumination from reflection. Journal of Personality and Social Psychology, 76, 284-304]. Although reflection is thought to be associated with problem solving and the promotion of mental health, previous researches have shown that reflection does not always have an adaptive effect on depression. Authors have examined the causes behind this inconsistency by modeling the relationships among self-reflection, self-rumination, and depression. One hundred and eleven undergraduates (91 men and 20 women) participated in a two-time point assessment with a 3-week interval. Statistical analysis with structural equation modeling showed that self-reflection significantly predicted self-rumination, whereas self-rumination did not predict self-reflection. With regard to depression, self-reflection was associated with a lower level of depression; self-rumination, with a higher level of depression. The total effect of self-reflection on depression was almost zero. This result indicates that self-reflection per se has an adaptive effect, which is canceled out by the maladaptive effect of self-rumination, because reflectors are likely to ruminate and reflect simultaneously.

Visualizing Magnetic domain of Electric Steel using Grating Interferometer at NG6 of NIST

Energy Technology Data Exchange (ETDEWEB)

Kim, Young Ju; Oh, Oh Sung; Lee, Se Ho; Kim, Dae Seung; Lee, Seung Wook [Pusan National University, Busan (Korea, Republic of); Kim, Jong Yul [KAERI, Daejeon (Korea, Republic of); Kwon, Oh Yeoul [Pohang Iron and Steel Company, Pohang (Korea, Republic of); Hussey, D. S.; Jacobson, D. L.; Lamannad, J. M. [NIST, Gaithersburg (United States)

2016-05-15

The Grating Interferometer is one of new imaging techniques provides improved contrast images, Phase Contrast Image and Dark-Field Image, which have never been seen before by conventional radiography. Neutron Dark-Field Imaging (NDFI) suggests new approach for material science providing the scattering image caused by the micro-structure of object. We attracted to the application of NDFI for material science, the electric steel which produce magnetic scattering information especially. In this study, we developed 1 dimensional gratings using gadox filling method to make the Talbot-Lau Interferometer (TLI). The experiment was conducted at cold neutron imaging facility NG6 of National Institute of Standards and Technologies, NIST. We confirmed that the 3 order Talbot-Lau type of neutron grating interferometer which is composed of gratings made by gadox filling method is well operated at cold neutron imaging beamline. NDFI is definitely powerful visualizing tool for material science, especially magnetic materials. In further study, we will research electric steel more in realistic conditions when it is worked as a component of electric motor.

Self-compassionate actions and disordered eating behavior in women: The mediator effect of body appreciation

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Andreia Máximo

2017-09-01

Conclusions: Present results suggest that self-compassionate actions hold a protective effect on eating behavior through higher levels of respect and appreciation toward body image, despite body weight, shape, and imperfections. The ability to act following self-compassionate motivations seems to contribute to higher levels of body image appreciation, which reflects in a lower susceptibility to adopt disordered eating attitudes and behaviors. The present study seems to represent an important contribution to research and clinical practice and underlines the importance of including strategies to develop self-compassionate and body appreciation competencies in programs to prevent and intervene in the area of eating psychopathology.

Improving the Self-Image of the Socially Disabled

Science.gov (United States)

Matthews, Lillian B.

1975-01-01

Reviewing the literature on physical attractiveness' relationship to selself-image and social acceptability, the author points out the need for self-care courses as "social therapy," gives a step-by-step procedure to develop such programs for the institutionalized, and tells how to become a teacher in a social therapy program. (AJ)

IMPLEMENTASI WEB GOVERNMENT SEBAGI MEDIA INFORMASI POTENSI DESA SUKARAJA

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Sri Hartati

2017-05-01

The development of information technology is so rapid that one of them is the Internet can be utilized in all aspects of human life both in terms of jobs and search for information is through web-based service that is often called the website. E-government On Talbot Village is one website created to provide services and information to the public about the overall portfolio of the Talbot Village, the potentials at Talbot Village, governance structure in Talbot Village and all relevant information in Talbot Village. Development of the system is done based approach method System Development Life Cycle (SDLC that includes the stages of planning, analysis, coding, and implementation of the system, a tool in the system development process using DAD (Data Flow Diagrams, DFD (Data Flow Diagram, and flowchart , In making this website the researchers used programming language HTML (Hypertext Markup Language, PHP (Hypertext Processor, CSS (Cascading Style sheet, JQUERY, JAVASCRIPT and presenting data in the form of MySQL. With the E-Government On Talbot Village aims to provide benefits to the wider community of the village by way of obtaining information easily, quickly, effectively and efficiently without knowing the time anytime and anywhere

Self-consistent density functional calculation of the image potential at a metal surface

International Nuclear Information System (INIS)

Jung, J; Alvarellos, J E; Chacon, E; GarcIa-Gonzalez, P

2007-01-01

It is well known that the exchange-correlation (XC) potential at a metal surface has an image-like asymptotic behaviour given by -1/4(z-z 0 ), where z is the coordinate perpendicular to the surface. Using a suitable fully non-local functional prescription, we evaluate self-consistently the XC potential with the correct image behaviour for simple jellium surfaces in the range of metallic densities. This allows a proper comparison between the corresponding image-plane position, z 0 , and other related quantities such as the centroid of an induced charge by an external perturbation. As a by-product, we assess the routinely used local density approximation when evaluating electron density profiles, work functions, and surface energies by focusing on the XC effects included in the fully non-local description

Self-consistent density functional calculation of the image potential at a metal surface

Energy Technology Data Exchange (ETDEWEB)

Jung, J [Departamento de Fisica Fundamental, Universidad Nacional de Educacion a Distancia, Apartado 60141, 28080 Madrid (Spain); Alvarellos, J E [Departamento de Fisica Fundamental, Universidad Nacional de Educacion a Distancia, Apartado 60141, 28080 Madrid (Spain); Chacon, E [Instituto de Ciencias de Materiales de Madrid, Consejo Superior de Investigaciones CientIficas, E-28049 Madrid (Spain); GarcIa-Gonzalez, P [Departamento de Fisica Fundamental, Universidad Nacional de Educacion a Distancia, Apartado 60141, 28080 Madrid (Spain)

2007-07-04

It is well known that the exchange-correlation (XC) potential at a metal surface has an image-like asymptotic behaviour given by -1/4(z-z{sub 0}), where z is the coordinate perpendicular to the surface. Using a suitable fully non-local functional prescription, we evaluate self-consistently the XC potential with the correct image behaviour for simple jellium surfaces in the range of metallic densities. This allows a proper comparison between the corresponding image-plane position, z{sub 0}, and other related quantities such as the centroid of an induced charge by an external perturbation. As a by-product, we assess the routinely used local density approximation when evaluating electron density profiles, work functions, and surface energies by focusing on the XC effects included in the fully non-local description.

Assessing the Internal Consistency of the Self-Image Questionnaire for Young Adolescents (SIQYA): A Nigerian Investigation.

Science.gov (United States)

Adegoke, Alfred A.

Noting the lack of self-concept research in nonwestern cultures and the need to determine if a western measure of self-image is embedded in the same network of constructs in another culture, this study examined the appropriateness of using the Self Image Questionnaire for Young Adolescents (SIQYA) with Nigerian students. Participating in the study…

The association between self-image and defence mechanisms in a group of adolescent patients receiving psychiatric treatment.

Science.gov (United States)

Treger, Bartosz; Matusiak, Feliks; Pilecki, Maciej; Rogoż, Monika

2015-01-01

The aim of the study was to explore the relationship between various areas of self-image and defence mechanisms in adolescents. The study included a division into groups according to whether or not they were receiving psychiatric treatment. Data were obtained from two groups: a clinical group (30 persons), consisting of adolescent patients of the Adolescent Inpatient Ward of the Child and Adolescent Psychiatry Clinic and a control group (40 persons), adolescents attending upper secondary school. The Defence Style Questionnaire DSQ-40 and the Offer Self Image Questionnaire were used in the study. Results showed no differences, in the maturity levels of the defence mechanisms, between the two groups. Subjects from the clinical group had a significantly lower self-image of themselves than subjects from the control group.. In both groups, the use of mature defence mechanisms was accompanied by a positive self-image, while the use of less mature defence mechanisms was associated with a lower self-image. Comparison of the groups revealed different relationships between the aspects of self-image and used defence mechanisms, in particular the mechanism of projection. Number of significant correlations was greater in the clinical group. In the context of lower self-image, the study revealed the importance of such defence mechanisms as projection, acting out, somatization or schizoid fantasies. The obtained results seem to confirm a hypothesis that the assessment of the maturity of defence mechanisms in the period of adolescence is less clear and clinically useful.

My Body Looks Like That Girl’s: Body Mass Index Modulates Brain Activity during Body Image Self-Reflection among Young Women

Science.gov (United States)

Wen, Xin; She, Ying; Vinke, Petra Corianne; Chen, Hong

2016-01-01

Body image distress or body dissatisfaction is one of the most common consequences of obesity and overweight. We investigated the neural bases of body image processing in overweight and average weight young women to understand whether brain regions that were previously found to be involved in processing self-reflective, perspective and affective components of body image would show different activation between two groups. Thirteen overweight (O-W group, age = 20.31±1.70 years) and thirteen average weight (A-W group, age = 20.15±1.62 years) young women underwent functional magnetic resonance imaging while performing a body image self-reflection task. Among both groups, whole-brain analysis revealed activations of a brain network related to perceptive and affective components of body image processing. ROI analysis showed a main effect of group in ACC as well as a group by condition interaction within bilateral EBA, bilateral FBA, right IPL, bilateral DLPFC, left amygdala and left MPFC. For the A-W group, simple effect analysis revealed stronger activations in Thin-Control compared to Fat-Control condition within regions related to perceptive (including bilateral EBA, bilateral FBA, right IPL) and affective components of body image processing (including bilateral DLPFC, left amygdala), as well as self-reference (left MPFC). The O-W group only showed stronger activations in Fat-Control than in Thin-Control condition within regions related to the perceptive component of body image processing (including left EBA and left FBA). Path analysis showed that in the Fat-Thin contrast, body dissatisfaction completely mediated the group difference in brain response in left amygdala across the whole sample. Our data are the first to demonstrate differences in brain response to body pictures between average weight and overweight young females involved in a body image self-reflection task. These results provide insights for understanding the vulnerability to body image distress

ORTHOIMAGERY, TALBOT COUNTY, MD USA

Data.gov (United States)

Federal Emergency Management Agency, Department of Homeland Security — Digital orthographic imagery datasets contain georeferenced images of the Earth's surface, collected by a sensor in which object displacement has been removed for...

Autobiographical memory and well-being in aging: The central role of semantic self-images.

Science.gov (United States)

Rathbone, Clare J; Holmes, Emily A; Murphy, Susannah E; Ellis, Judi A

2015-05-01

Higher levels of well-being are associated with longer life expectancies and better physical health. Previous studies suggest that processes involving the self and autobiographical memory are related to well-being, yet these relationships are poorly understood. The present study tested 32 older and 32 younger adults using scales measuring well-being and the affective valence of two types of autobiographical memory: episodic autobiographical memories and semantic self-images. Results showed that valence of semantic self-images, but not episodic autobiographical memories, was highly correlated with well-being, particularly in older adults. In contrast, well-being in older adults was unrelated to performance across a range of standardised memory tasks. These results highlight the role of semantic self-images in well-being, and have implications for the development of therapeutic interventions for well-being in aging. Copyright © 2015 The Authors. Published by Elsevier Inc. All rights reserved.

Images of God used by self-injurious burn patients.

Science.gov (United States)

Grossoehme, D H; Springer, L S

1999-08-01

Suicide by burning and other forms of self-injurious behaviors which involve burning are sometimes considered to have religious overtones. The ritual death of widows upon their husband's funeral pyre is closely associated with Hindu beliefs. Buddhists have used self-immolation as a form of protest. The Judaeo-Christian traditions have imagery of fire as cleansing and purifying; there is also secular imagery associating fire with images of condemnation and evil. Previous studies have described religiosity as a common theme among survivors. The present study describes the ways in which persons who inflicted self-injurious behaviors through burning, including attempted suicide, imagine the Divinity and use religious language to give meaning to their experience.

Relationship between self-esteem and body image in children with obesity

OpenAIRE

Jaime Javier Sánchez Arenas

2015-01-01

Childhood obesity is a growing health problem that affects the physical and psychological development. Therefore, the aim of this study was to analyze the relationship between self-esteem and body image in Mexican obese children. A cross-seccional and correlational research was conducted; the participants in this study were 270 children, 8-11 years old, from Mexico. To select obese children weight and height were measured (BMI percentile > 95). Instruments of self-esteem (Self-esteem Question...

Body Image Distortion and Exposure to Extreme Body Types: Contingent Adaptation and Cross Adaptation for Self and Other.

Science.gov (United States)

Brooks, Kevin R; Mond, Jonathan M; Stevenson, Richard J; Stephen, Ian D

2016-01-01

Body size misperception is common amongst the general public and is a core component of eating disorders and related conditions. While perennial media exposure to the "thin ideal" has been blamed for this misperception, relatively little research has examined visual adaptation as a potential mechanism. We examined the extent to which the bodies of "self" and "other" are processed by common or separate mechanisms in young women. Using a contingent adaptation paradigm, experiment 1 gave participants prolonged exposure to images both of the self and of another female that had been distorted in opposite directions (e.g., expanded other/contracted self), and assessed the aftereffects using test images both of the self and other. The directions of the resulting perceptual biases were contingent on the test stimulus, establishing at least some separation between the mechanisms encoding these body types. Experiment 2 used a cross adaptation paradigm to further investigate the extent to which these mechanisms are independent. Participants were adapted either to expanded or to contracted images of their own body or that of another female. While adaptation effects were largest when adapting and testing with the same body type, confirming the separation of mechanisms reported in experiment 1, substantial misperceptions were also demonstrated for cross adaptation conditions, demonstrating a degree of overlap in the encoding of self and other. In addition, the evidence of misperception of one's own body following exposure to "thin" and to "fat" others demonstrates the viability of visual adaptation as a model of body image disturbance both for those who underestimate and those who overestimate their own size.

Self-training-based spectral image reconstruction for art paintings with multispectral imaging.

Science.gov (United States)

Xu, Peng; Xu, Haisong; Diao, Changyu; Ye, Zhengnan

2017-10-20

A self-training-based spectral reflectance recovery method was developed to accurately reconstruct the spectral images of art paintings with multispectral imaging. By partitioning the multispectral images with the k-means clustering algorithm, the training samples are directly extracted from the art painting itself to restrain the deterioration of spectral estimation caused by the material inconsistency between the training samples and the art painting. Coordinate paper is used to locate the extracted training samples. The spectral reflectances of the extracted training samples are acquired indirectly with a spectroradiometer, and the circle Hough transform is adopted to detect the circle measuring area of the spectroradiometer. Through simulation and a practical experiment, the implementation of the proposed method is explained in detail, and it is verified to have better reflectance recovery performance than that using the commercial target and is comparable to the approach using a painted color target.

STEP: Self-supporting tailored k-space estimation for parallel imaging reconstruction.

Science.gov (United States)

Zhou, Zechen; Wang, Jinnan; Balu, Niranjan; Li, Rui; Yuan, Chun

2016-02-01

A new subspace-based iterative reconstruction method, termed Self-supporting Tailored k-space Estimation for Parallel imaging reconstruction (STEP), is presented and evaluated in comparison to the existing autocalibrating method SPIRiT and calibrationless method SAKE. In STEP, two tailored schemes including k-space partition and basis selection are proposed to promote spatially variant signal subspace and incorporated into a self-supporting structured low rank model to enforce properties of locality, sparsity, and rank deficiency, which can be formulated into a constrained optimization problem and solved by an iterative algorithm. Simulated and in vivo datasets were used to investigate the performance of STEP in terms of overall image quality and detail structure preservation. The advantage of STEP on image quality is demonstrated by retrospectively undersampled multichannel Cartesian data with various patterns. Compared with SPIRiT and SAKE, STEP can provide more accurate reconstruction images with less residual aliasing artifacts and reduced noise amplification in simulation and in vivo experiments. In addition, STEP has the capability of combining compressed sensing with arbitrary sampling trajectory. Using k-space partition and basis selection can further improve the performance of parallel imaging reconstruction with or without calibration signals. © 2015 Wiley Periodicals, Inc.

Functional imaging of murine hearts using accelerated self-gated UTE cine MRI

NARCIS (Netherlands)

Motaal, Abdallah G.; Noorman, Nils; de Graaf, Wolter L.; Hoerr, Verena; Florack, Luc M. J.; Nicolay, Klaas; Strijkers, Gustav J.

2015-01-01

We introduce a fast protocol for ultra-short echo time (UTE) Cine magnetic resonance imaging (MRI) of the beating murine heart. The sequence involves a self-gated UTE with golden-angle radial acquisition and compressed sensing reconstruction. The self-gated acquisition is performed asynchronously

Body image and self-esteem in lower-limb amputees.

Directory of Open Access Journals (Sweden)

Lukas A Holzer

Full Text Available BACKGROUND: Limb amputation is often an inevitable procedure in the advanced condition of various diseases and poses a dramatic impact on a patient's life. The aim of the present study is to analyze the impact of lower-limb amputations on aesthetic factors such as body image and self-esteem as well as quality of life (QoL. METHODS: 298 patients (149 uni- or bilateral lower-limb amputees and 149 controls were included in this cross-sectional study in three centers. Demographic data was collected and patients received a 118-item questionnaire including the Multidimensional Body-Self Relations Questionnaire (MBSRQ, the Rosenberg Self-esteem (RSE scale and the SF-36 Health Survey (QoL. ANOVA and student's t-test were used for statistical analysis. RESULTS: Unilateral lower-limb amputees showed a significant lower MBSRQ score of 3.07±0.54 compared with 3.41±0.34 in controls (p<0.001 and a lower score in the RSE compared to controls (21.63±4.72 vs. 21.46±5.86. However, differences were not statistically significant (p = 0.36. Patients with phantom pain sensation had a significantly reduced RSE (p = 0.01. The SF-36 health survey was significantly lower in patients with lower-limb amputation compared to controls (42.17±14.47 vs. 64.05±12.39 (p<0.001. CONCLUSION: This study showed that lower-limb amputations significantly influence patients' body image and QoL. Self-esteem seems to be an independent aspect, which is not affected by lower-limb amputation. However, self-esteem is influenced significantly by phantom pain sensation.

Self-assessed performance improves statistical fusion of image labels

Energy Technology Data Exchange (ETDEWEB)

Bryan, Frederick W., E-mail: frederick.w.bryan@vanderbilt.edu; Xu, Zhoubing; Asman, Andrew J.; Allen, Wade M. [Electrical Engineering, Vanderbilt University, Nashville, Tennessee 37235 (United States); Reich, Daniel S. [Translational Neuroradiology Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland 20892 (United States); Landman, Bennett A. [Electrical Engineering, Vanderbilt University, Nashville, Tennessee 37235 (United States); Biomedical Engineering, Vanderbilt University, Nashville, Tennessee 37235 (United States); and Radiology and Radiological Sciences, Vanderbilt University, Nashville, Tennessee 37235 (United States)

2014-03-15

Purpose: Expert manual labeling is the gold standard for image segmentation, but this process is difficult, time-consuming, and prone to inter-individual differences. While fully automated methods have successfully targeted many anatomies, automated methods have not yet been developed for numerous essential structures (e.g., the internal structure of the spinal cord as seen on magnetic resonance imaging). Collaborative labeling is a new paradigm that offers a robust alternative that may realize both the throughput of automation and the guidance of experts. Yet, distributing manual labeling expertise across individuals and sites introduces potential human factors concerns (e.g., training, software usability) and statistical considerations (e.g., fusion of information, assessment of confidence, bias) that must be further explored. During the labeling process, it is simple to ask raters to self-assess the confidence of their labels, but this is rarely done and has not been previously quantitatively studied. Herein, the authors explore the utility of self-assessment in relation to automated assessment of rater performance in the context of statistical fusion. Methods: The authors conducted a study of 66 volumes manually labeled by 75 minimally trained human raters recruited from the university undergraduate population. Raters were given 15 min of training during which they were shown examples of correct segmentation, and the online segmentation tool was demonstrated. The volumes were labeled 2D slice-wise, and the slices were unordered. A self-assessed quality metric was produced by raters for each slice by marking a confidence bar superimposed on the slice. Volumes produced by both voting and statistical fusion algorithms were compared against a set of expert segmentations of the same volumes. Results: Labels for 8825 distinct slices were obtained. Simple majority voting resulted in statistically poorer performance than voting weighted by self-assessed performance

Self-assessed performance improves statistical fusion of image labels

International Nuclear Information System (INIS)

Bryan, Frederick W.; Xu, Zhoubing; Asman, Andrew J.; Allen, Wade M.; Reich, Daniel S.; Landman, Bennett A.

2014-01-01

Purpose: Expert manual labeling is the gold standard for image segmentation, but this process is difficult, time-consuming, and prone to inter-individual differences. While fully automated methods have successfully targeted many anatomies, automated methods have not yet been developed for numerous essential structures (e.g., the internal structure of the spinal cord as seen on magnetic resonance imaging). Collaborative labeling is a new paradigm that offers a robust alternative that may realize both the throughput of automation and the guidance of experts. Yet, distributing manual labeling expertise across individuals and sites introduces potential human factors concerns (e.g., training, software usability) and statistical considerations (e.g., fusion of information, assessment of confidence, bias) that must be further explored. During the labeling process, it is simple to ask raters to self-assess the confidence of their labels, but this is rarely done and has not been previously quantitatively studied. Herein, the authors explore the utility of self-assessment in relation to automated assessment of rater performance in the context of statistical fusion. Methods: The authors conducted a study of 66 volumes manually labeled by 75 minimally trained human raters recruited from the university undergraduate population. Raters were given 15 min of training during which they were shown examples of correct segmentation, and the online segmentation tool was demonstrated. The volumes were labeled 2D slice-wise, and the slices were unordered. A self-assessed quality metric was produced by raters for each slice by marking a confidence bar superimposed on the slice. Volumes produced by both voting and statistical fusion algorithms were compared against a set of expert segmentations of the same volumes. Results: Labels for 8825 distinct slices were obtained. Simple majority voting resulted in statistically poorer performance than voting weighted by self-assessed performance

Self-Esteem and Body Image Perception in a Sample of University Students

Science.gov (United States)

Pop, Cristiana

2016-01-01

Problem Statement: This cross-sectional study was conducted to determine the relationship established between self-esteem and body image dissatisfaction, as subjective variables among young, female Romanian university students. Purpose of Study: We hypothesize that young women's body dissatisfaction is related to their self-esteem level. The…

A Novel Image Encryption Scheme Based on Self-Synchronous Chaotic Stream Cipher and Wavelet Transform

Directory of Open Access Journals (Sweden)

Chunlei Fan

2018-06-01

Full Text Available In this paper, a novel image encryption scheme is proposed for the secure transmission of image data. A self-synchronous chaotic stream cipher is designed with the purpose of resisting active attack and ensures the limited error propagation of image data. Two-dimensional discrete wavelet transform and Arnold mapping are used to scramble the pixel value of the original image. A four-dimensional hyperchaotic system with four positive Lyapunov exponents serve as the chaotic sequence generator of the self-synchronous stream cipher in order to enhance the security and complexity of the image encryption system. Finally, the simulation experiment results show that this image encryption scheme is both reliable and secure.

Distinct brain systems mediate the effects of nociceptive input and self-regulation on pain.

Directory of Open Access Journals (Sweden)

Choong-Wan Woo

2015-01-01

Full Text Available Cognitive self-regulation can strongly modulate pain and emotion. However, it is unclear whether self-regulation primarily influences primary nociceptive and affective processes or evaluative ones. In this study, participants engaged in self-regulation to increase or decrease pain while experiencing multiple levels of painful heat during functional magnetic resonance imaging (fMRI imaging. Both heat intensity and self-regulation strongly influenced reported pain, but they did so via two distinct brain pathways. The effects of stimulus intensity were mediated by the neurologic pain signature (NPS, an a priori distributed brain network shown to predict physical pain with over 90% sensitivity and specificity across four studies. Self-regulation did not influence NPS responses; instead, its effects were mediated through functional connections between the nucleus accumbens and ventromedial prefrontal cortex. This pathway was unresponsive to noxious input, and has been broadly implicated in valuation, emotional appraisal, and functional outcomes in pain and other types of affective processes. These findings provide evidence that pain reports are associated with two dissociable functional systems: nociceptive/affective aspects mediated by the NPS, and evaluative/functional aspects mediated by a fronto-striatal system.

Method and apparatus of a portable imaging-based measurement with self calibration

Science.gov (United States)

Chang, Tzyy-Shuh [Ann Arbor, MI; Huang, Hsun-Hau [Ann Arbor, MI

2012-07-31

A portable imaging-based measurement device is developed to perform 2D projection based measurements on an object that is difficult or dangerous to access. This device is equipped with self calibration capability and built-in operating procedures to ensure proper imaging based measurement.

Improvement in cognitive and psychosocial functioning and self image among adolescent inpatient suicide attempters.

Science.gov (United States)

Hintikka, Ulla; Marttunen, Mauri; Pelkonen, Mirjami; Laukkanen, Eila; Viinamäki, Heimo; Lehtonen, Johannes

2006-12-29

Psychiatric treatment of suicidal youths is often difficult and non-compliance in treatment is a significant problem. This prospective study compared characteristics and changes in cognitive functioning, self image and psychosocial functioning among 13 to 18 year-old adolescent psychiatric inpatients with suicide attempts (n = 16) and with no suicidality (n = 39) The two-group pre-post test prospective study design included assessments by a psychiatrist, a psychologist and medical staff members as well as self-rated measures. DSM-III-R diagnoses were assigned using the SCID and thereafter transformed to DSM-IV diagnoses. Staff members assessed psychosocial functioning using the Global Assessment Scale (GAS). Cognitive performance was assessed using the Wechsler Adult Intelligence Scale, while the Offer Self-Image Questionnaire (OSIQ) was used to assess the subjects' self-image. ANCOVA with repeated measures was used to test changes from entry to discharge among the suicide attempters and non suicidal patients. Logistic regression modeling was used to assess variables associated with an improvement of 10 points or more in the GAS score. Among suicide attempter patients, psychosocial functioning, cognitive performance and both the psychological self and body-image improved during treatment and their treatment compliance and outcome were as good as that of the non-suicidal patients. Suicidal ideation and hopelessness declined, and psychosocial functioning improved. Changes in verbal cognitive performance were more pronounced among the suicide attempters. Having an improved body-image associated with a higher probability of improvement in psychosocial functioning while higher GAS score at entry was associated with lower probability of functional improvement in both patient groups. These findings illustrate that a multimodal treatment program seems to improve psychosocial functioning and self-image among severely disordered suicidal adolescent inpatients. There were no

Improvement in cognitive and psychosocial functioning and self image among adolescent inpatient suicide attempters

Directory of Open Access Journals (Sweden)

Laukkanen Eila

2006-12-01

Full Text Available Abstract Background Psychiatric treatment of suicidal youths is often difficult and non-compliance in treatment is a significant problem. This prospective study compared characteristics and changes in cognitive functioning, self image and psychosocial functioning among 13 to 18 year-old adolescent psychiatric inpatients with suicide attempts (n = 16 and with no suicidality (n = 39 Methods The two-group pre-post test prospective study design included assessments by a psychiatrist, a psychologist and medical staff members as well as self-rated measures. DSM-III-R diagnoses were assigned using the SCID and thereafter transformed to DSM-IV diagnoses. Staff members assessed psychosocial functioning using the Global Assessment Scale (GAS. Cognitive performance was assessed using the Wechsler Adult Intelligence Scale, while the Offer Self-Image Questionnaire (OSIQ was used to assess the subjects' self-image. ANCOVA with repeated measures was used to test changes from entry to discharge among the suicide attempters and non suicidal patients. Logistic regression modeling was used to assess variables associated with an improvement of 10 points or more in the GAS score. Results Among suicide attempter patients, psychosocial functioning, cognitive performance and both the psychological self and body-image improved during treatment and their treatment compliance and outcome were as good as that of the non-suicidal patients. Suicidal ideation and hopelessness declined, and psychosocial functioning improved. Changes in verbal cognitive performance were more pronounced among the suicide attempters. Having an improved body-image associated with a higher probability of improvement in psychosocial functioning while higher GAS score at entry was associated with lower probability of functional improvement in both patient groups. Conclusion These findings illustrate that a multimodal treatment program seems to improve psychosocial functioning and self-image among

The moderating impact of self-esteem on self-affirmation effects

OpenAIRE

During, Camilla

2015-01-01

Self-affirmation has been successfully applied as a technique to promote open processing of health-risk information. However, much research in this area has explored the uniform effectiveness of self-affirmation interventions. The current thesis adds to existing literature by exploring whether different aspects of self-regard moderate self-affirmation effects.\\ud Study 1 (N = 328) investigated whether global self-esteem moderated the effectiveness of self-affirmation at promoting openness to ...

Self - Esteem and Body Image Perception in a Sample of University Students

OpenAIRE

POP, Cristiana

2016-01-01

Problem Statement: This cross-sectional study was conducted to determine the relationship established between self-esteem and body image dissatisfaction, as subjective variables among young, female Romanian university students. Purpose of Study: We hypothesize that young women’s body dissatisfaction is related to their self-esteem level. The second purpose of this study is to verify whether self-esteem level and body size acceptance, which are subjective variables, are significantly correlate...

Self-calibration of cone-beam CT geometry using 3D–2D image registration

Science.gov (United States)

Ouadah, S; Stayman, J W; Gang, G J; Ehtiati, T; Siewerdsen, J H

2016-01-01

Robotic C-arms are capable of complex orbits that can increase field of view, reduce artifacts, improve image quality, and/or reduce dose; however, it can be challenging to obtain accurate, reproducible geometric calibration required for image reconstruction for such complex orbits. This work presents a method for geometric calibration for an arbitrary source-detector orbit by registering 2D projection data to a previously acquired 3D image. It also yields a method by which calibration of simple circular orbits can be improved. The registration uses a normalized gradient information similarity metric and the covariance matrix adaptation-evolution strategy optimizer for robustness against local minima and changes in image content. The resulting transformation provides a ‘self-calibration’ of system geometry. The algorithm was tested in phantom studies using both a cone-beam CT (CBCT) test-bench and a robotic C-arm (Artis Zeego, Siemens Healthcare) for circular and non-circular orbits. Self-calibration performance was evaluated in terms of the full-width at half-maximum (FWHM) of the point spread function in CBCT reconstructions, the reprojection error (RPE) of steel ball bearings placed on each phantom, and the overall quality and presence of artifacts in CBCT images. In all cases, self-calibration improved the FWHM—e.g. on the CBCT bench, FWHM = 0.86 mm for conventional calibration compared to 0.65 mm for self-calibration (p < 0.001). Similar improvements were measured in RPE—e.g. on the robotic C-arm, RPE = 0.73 mm for conventional calibration compared to 0.55 mm for self-calibration (p < 0.001). Visible improvement was evident in CBCT reconstructions using self-calibration, particularly about high-contrast, high-frequency objects (e.g. temporal bone air cells and a surgical needle). The results indicate that self-calibration can improve even upon systems with presumably accurate geometric calibration and is applicable to situations where conventional

Self-calibration of cone-beam CT geometry using 3D-2D image registration

Science.gov (United States)

Ouadah, S.; Stayman, J. W.; Gang, G. J.; Ehtiati, T.; Siewerdsen, J. H.

2016-04-01

Robotic C-arms are capable of complex orbits that can increase field of view, reduce artifacts, improve image quality, and/or reduce dose; however, it can be challenging to obtain accurate, reproducible geometric calibration required for image reconstruction for such complex orbits. This work presents a method for geometric calibration for an arbitrary source-detector orbit by registering 2D projection data to a previously acquired 3D image. It also yields a method by which calibration of simple circular orbits can be improved. The registration uses a normalized gradient information similarity metric and the covariance matrix adaptation-evolution strategy optimizer for robustness against local minima and changes in image content. The resulting transformation provides a ‘self-calibration’ of system geometry. The algorithm was tested in phantom studies using both a cone-beam CT (CBCT) test-bench and a robotic C-arm (Artis Zeego, Siemens Healthcare) for circular and non-circular orbits. Self-calibration performance was evaluated in terms of the full-width at half-maximum (FWHM) of the point spread function in CBCT reconstructions, the reprojection error (RPE) of steel ball bearings placed on each phantom, and the overall quality and presence of artifacts in CBCT images. In all cases, self-calibration improved the FWHM—e.g. on the CBCT bench, FWHM  =  0.86 mm for conventional calibration compared to 0.65 mm for self-calibration (p  robotic C-arm, RPE  =  0.73 mm for conventional calibration compared to 0.55 mm for self-calibration (p  <  0.001). Visible improvement was evident in CBCT reconstructions using self-calibration, particularly about high-contrast, high-frequency objects (e.g. temporal bone air cells and a surgical needle). The results indicate that self-calibration can improve even upon systems with presumably accurate geometric calibration and is applicable to situations where conventional calibration is not feasible

Body Image Distortion and Exposure to Extreme Body Types: Contingent Adaptation and Cross Adaptation for Self and Other

Directory of Open Access Journals (Sweden)

Kevin R. Brooks

2016-07-01

Full Text Available Body size misperception is common amongst the general public and is a core component of eating disorders and related conditions. While perennial media exposure to the thin ideal has been blamed for this misperception, relatively little research has examined visual adaptation as a potential mechanism. We examined the extent to which the bodies of self and other are processed by common or separate mechanisms in young women. Using a contingent adaptation paradigm, experiment 1 gave participants prolonged exposure to images both of the self and of another female that had been distorted in opposite directions (e.g. expanded other/contracted self, and assessed the aftereffects using test images both of the self and other. The directions of the resulting perceptual biases were contingent on the test stimulus, establishing at least some separation between the mechanisms encoding these body types. Experiment 2 used a cross adaptation paradigm to further investigate the extent to which these mechanisms are independent. Participants were adapted either to expanded or to contracted images of their own body or that of another female. While adaptation effects were largest when adapting and testing with the same body type, confirming the separation of mechanisms reported in experiment 1, substantial misperceptions were also demonstrated for cross adaptation conditions, demonstrating a degree of overlap in the encoding of self and other. In addition, the evidence of misperception of one’s own body following exposure to thin and to fat others demonstrates the viability of visual adaptation as a model of body image disturbance both for those who underestimate and those who overestimate their own size.

Self-Similar Spin Images for Point Cloud Matching

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Pulido, Daniel

based on the concept of self-similarity to aid in the scale and feature matching steps. An open problem in fusion is how best to extract features from two point clouds and then perform feature-based matching. The proposed approach for this matching step is the use of local self-similarity as an invariant measure to match features. In particular, the proposed approach is to combine the concept of local self-similarity with a well-known feature descriptor, Spin Images, and thereby define "Self-Similar Spin Images". This approach is then extended to the case of matching two points clouds in very different coordinate systems (e.g., a geo-referenced Lidar point cloud and stereo-image derived point cloud without geo-referencing). The use of Self-Similar Spin Images is again applied to address this problem by introducing a "Self-Similar Keyscale" that matches the spatial scales of two point clouds. Another open problem is how best to detect changes in content between two point clouds. A method is proposed to find changes between two point clouds by analyzing the order statistics of the nearest neighbors between the two clouds, and thereby define the "Nearest Neighbor Order Statistic" method. Note that the well-known Hausdorff distance is a special case as being just the maximum order statistic. Therefore, by studying the entire histogram of these nearest neighbors it is expected to yield a more robust method to detect points that are present in one cloud but not the other. This approach is applied at multiple resolutions. Therefore, changes detected at the coarsest level will yield large missing targets and at finer levels will yield smaller targets.

Patient body image, self-esteem, and cosmetic results of minimally invasive robotic cardiac surgery.

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İyigün, Taner; Kaya, Mehmet; Gülbeyaz, Sevil Özgül; Fıstıkçı, Nurhan; Uyanık, Gözde; Yılmaz, Bilge; Onan, Burak; Erkanlı, Korhan

2017-03-01

Patient-reported outcome measures reveal the quality of surgical care from the patient's perspective. We aimed to compare body image, self-esteem, hospital anxiety and depression, and cosmetic outcomes by using validated tools between patients undergoing robot-assisted surgery and those undergoing conventional open surgery. This single-center, multidisciplinary, randomized, prospective study of 62 patients who underwent cardiac surgery was conducted at Hospital from May 2013 to January 2015. The patients were divided into two groups: the robotic group (n = 33) and the open group (n = 29). The study employed five different tools to assess body image, self-esteem, and overall patient-rated scar satisfaction. There were statistically significant differences between the groups in terms of self-esteem scores (p = 0.038), body image scores (p = 0.026), overall Observer Scar Assessment Scale (p = 0.013), and overall Patient Scar Assessment Scale (p = 0.036) scores in favor of the robotic group during the postoperative period. Robot-assisted surgery protected the patient's body image and self-esteem, while conventional open surgery decreased these levels but without causing pathologies. Preoperative depression and anxiety level was reduced by both robot-assisted surgery and conventional open surgery. The groups did not significantly differ on Patient Satisfaction Scores and depression/anxiety scores. The results of this study clearly demonstrated that a minimally invasive approach using robotic-assisted surgery has advantages in terms of body image, self-esteem, and cosmetic outcomes over the conventional approach in patients undergoing cardiac surgery. Copyright © 2017 IJS Publishing Group Ltd. Published by Elsevier Ltd. All rights reserved.

The Longitudinal Interplay of Adolescents' Self-Esteem and Body Image: A Conditional Autoregressive Latent Trajectory Analysis

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Morin, Alexandre J. S.; Maiano, Christophe; Marsh, Herbert W.; Janosz, Michel; Nagengast, Benjamin

2011-01-01

Self-esteem and body image are central to coping successfully with the developmental challenges of adolescence. However, the current knowledge surrounding self-esteem and body image is fraught with controversy. This study attempts to clarify some of them by addressing three questions: (1) Are the intraindividual developmental trajectories of…

Advertising, patient decision making, and self-referral for computed tomographic and magnetic resonance imaging.

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Illes, Judy; Kann, Dylan; Karetsky, Kim; Letourneau, Phillip; Raffin, Thomas A; Schraedley-Desmond, Pamela; Koenig, Barbara A; Atlas, Scott W

Self-referred imaging is one of the latest health care services to be marketed directly to consumers. Most aspects of these services are unregulated, and little is known about the messages in advertising used to attract potential consumers. We conducted a detailed analysis of print advertisements and informational brochures for self-referred imaging with respect to themes, content, accuracy, and emotional valence. Forty print advertisements from US newspapers around the country and 20 informational brochures were analyzed by 2 independent raters according to 7 major themes: health care technology; emotion, empowerment, and assurance; incentives; limited supporting evidence; popular appeal; statistics; and images. The Fisher exact test was used to identify significant differences in information content. Both the advertisements and the brochures emphasized health care and technology information and provided assurances of good health and incentives to self-refer. These materials also encouraged consumers to seek further information from company resources; virtually none referred to noncomplying sources of information or to the risks of having a scan. Images of people commonly portrayed European Americans. We found statistical differences between newspaper advertisements and mailed brochures for references to "prevalence of disease" (Padvertisements (n = 15) and 25% of the brochures (n = 5). Direct-to-consumer marketing of self-referred imaging services, in both print advertisements and informational brochures, fails to provide prospective consumers with comprehensive balanced information vital to informed autonomous decision making. Professional guidelines and oversight for advertising and promotion of these services are needed.

Psychological Impact of Virtual Reality Gaming on the Formation of Self-Image in Early School-Age Children

Directory of Open Access Journals (Sweden)

Pakhomova V.G.,

2017-11-01

Full Text Available The article investigates the problem of interaction between a modern primary school-aged child and the field of virtual reality gaming and, in particular, the impact of virtual reality on the formation of self-image. Our study enabled us to explore the differences in the self-image in active and non-active players of roleplaying video games. The outcomes proved that there are certain changes in the self-image of active players related to their self-identification with characters of computer games according to their individual psychological features, whereas for children who engage in non-role-playing games such identification is not common. It was found that non-active children players generally have positive selfacceptance and do not suffer from feelings of anxiety and abandonment; active players, on the opposite, often demonstrate inadequate self-esteem, anxiety and a tendency to self-actualise in virtual reality gaming.

From dust to treasure: building a proper self-image through astronomy course

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Pang, Xiaoying

2015-08-01

Self-image is how we perceive ourselves. It is the impression built up over time from how we see ourselves and how the others see ourselves. As a teacher in a small college in China since 2013, I have found that most of my undergraduate students’ self-image is not “so healthy”, even some of them “de-valuate” themselves. After I got my PhD degree in astronomy, I have taught the astronomy introduction course in my college for three semesters. Since last semester, I decide not only to aim to warm up my students’ enthusiasm for astronomy, but also to try to help them build a proper self-image through astronomical teaching. In the course, solar system, planet formation, habitable planet, life on the planet are first few lectures to make students understand what a low probability that a habitable planet supporting life is formed. In a following lecture: from dust to treasure, I illustrate how precious each of us on earth, which are results of several billion years of evolution. At the same time, psychological survey and discussion are carried out during the course, helping students better understand themselves. Students are divided into groups to finish assignments via discussion and team work. In the final exam, each group present what they have learnt in a 10-15 min show, such as drama, musical, debate, crosstalk, dance etc.. I will present the structure of my course, the technique I use to teach, the most recent results of a survey of students’ self-image, and the students’ thought of the course in this meeting.

The impact of emotional intelligence, self-esteem, and self-image on romantic communication over MySpace.

Science.gov (United States)

Dong, Qingwen; Urista, Mark A; Gundrum, Duane

2008-10-01

A study based on a survey of 240 individual MySpace users found that low self-esteem encourages young adults to engage in romantic communication (such as having intimate communication with the opposite sex and looking for romantic partners) while higher emotional intelligence discourages such activity. The results also suggested that those who have higher self-image, such as thinking themselves attractive and happy with their appearance, tend to engage in romantic communication. Limitations of the study and suggestion for future study are discussed.

INFLUENCE OF CUSTOMER VALUES AND SELF-IMAGE CONGRUITY ON CUSTOMER BEHAVIOR-BASED CRM PERFORMANCE

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Mandy Loh

2015-10-01

Full Text Available The purpose of this study is to investigate the influence of the key dimensions of customer value (functional value, emotional value, social value, and perceived sacrifice and self-image congruity on customer-behavior based CRM performance. The study also attempts to investigate on the effect of key dimensions of customer value and self-image congruity on customer satisfaction and brand loyalty. The research model for this study was adopts an integrated framework from a previous study, and adds new element into it. This study has chosen to examine the framework in the retail industry, specifically hypermarket in Malaysia, where the adoption of CRM tools is increasing incrementally. The study target on the Generation Y who believed will be the future driver of retail industry. The findings show that perceived sacrifice appears to be a critical customer perceived value in influencing the customer behavior-based CRM performance and customer satisfaction. This study show that brand loyalty would directly influence the customer behavior-based CRM performance. Perceived sacrifice and brand loyalty should be focused when trying to improve the performance of CRM.

Patient positioning with X-ray detector self-calibration for image guided therapy

International Nuclear Information System (INIS)

Selby, B.P.; Sakas, G.; Stilla, U.; Groch, W.-D.

2011-01-01

Full text: Automatic alignment estimation from projection images has a range of applications, but misaligned cameras induce inaccuracies. Calibration methods for optical cameras requiring calibration bodies or detectable features have been a matter of research for years. Not so for image guided therapy, although exact patient pose recovery is crucial. To image patient anatomy, X-ray instead of optical equipment is used. Feature detection is often infeasible. Furthermore, a method not requiring a calibration body, usable during treatment, would be desirable to improve accuracy of the patient alignment. We present a novel approach not relying on image features but combining intensity based calibration with 3D pose recovery. A stereoscopic X-ray camera model is proposed, and effects of erroneous parameters on the patient alignment are evaluated. The relevant camera parameters are automatically computed by comparison of X-ray to CT images and are incorporated in the patient alignment computation. The methods were tested with ground truth data of an anatomic phantom with artificially produced misalignments and available real-patient images from a particle therapy machine. We show that our approach can compensate patient alignment errors through mis-calibration of a camera from more than 5 mm to below 0.2 mm. Usage of images with artificial noise shows that the method is robust against image degradation of 2-5%. X-ray camera sel calibration improves accuracy when cameras are misaligned. We could show that rigid body alignment was computed more accurately and that self-calibration is possible, even if detection of corresponding image features is not. (author)

Precise and fast spatial-frequency analysis using the iterative local Fourier transform.

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Lee, Sukmock; Choi, Heejoo; Kim, Dae Wook

2016-09-19

The use of the discrete Fourier transform has decreased since the introduction of the fast Fourier transform (fFT), which is a numerically efficient computing process. This paper presents the iterative local Fourier transform (ilFT), a set of new processing algorithms that iteratively apply the discrete Fourier transform within a local and optimal frequency domain. The new technique achieves 210 times higher frequency resolution than the fFT within a comparable computation time. The method's superb computing efficiency, high resolution, spectrum zoom-in capability, and overall performance are evaluated and compared to other advanced high-resolution Fourier transform techniques, such as the fFT combined with several fitting methods. The effectiveness of the ilFT is demonstrated through the data analysis of a set of Talbot self-images (1280 × 1024 pixels) obtained with an experimental setup using grating in a diverging beam produced by a coherent point source.

Divergent effects of activating thoughts of God on self-regulation.

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Laurin, Kristin; Kay, Aaron C; Fitzsimons, Gráinne M

2012-01-01

Despite the cultural ubiquity of ideas and images related to God, relatively little is known about the effects of exposure to God representations on behavior. Specific depictions of God differ across religions, but common to most is that God is (a) an omnipotent, controlling force and (b) an omniscient, all-knowing being. Given these 2 characteristic features, how might exposure to the concept of God influence behavior? Leveraging classic and recent theorizing on self-regulation and social cognition, we predict and test for 2 divergent effects of exposure to notions of God on self-regulatory processes. Specifically, we show that participants reminded of God (vs. neutral or positive concepts) demonstrate both decreased active goal pursuit (Studies 1, 2, and 5) and increased temptation resistance (Studies 3, 4, and 5). These findings provide the first experimental evidence that exposure to God influences goal pursuit and suggest that the ever-present cultural reminders of God can be both burden and benefit for self-regulation.

Self-calibration of cone-beam CT geometry using 3D–2D image registration

International Nuclear Information System (INIS)

Ouadah, S; Stayman, J W; Gang, G J; Siewerdsen, J H; Ehtiati, T

2016-01-01

Robotic C-arms are capable of complex orbits that can increase field of view, reduce artifacts, improve image quality, and/or reduce dose; however, it can be challenging to obtain accurate, reproducible geometric calibration required for image reconstruction for such complex orbits. This work presents a method for geometric calibration for an arbitrary source-detector orbit by registering 2D projection data to a previously acquired 3D image. It also yields a method by which calibration of simple circular orbits can be improved. The registration uses a normalized gradient information similarity metric and the covariance matrix adaptation-evolution strategy optimizer for robustness against local minima and changes in image content. The resulting transformation provides a ‘self-calibration’ of system geometry. The algorithm was tested in phantom studies using both a cone-beam CT (CBCT) test-bench and a robotic C-arm (Artis Zeego, Siemens Healthcare) for circular and non-circular orbits. Self-calibration performance was evaluated in terms of the full-width at half-maximum (FWHM) of the point spread function in CBCT reconstructions, the reprojection error (RPE) of steel ball bearings placed on each phantom, and the overall quality and presence of artifacts in CBCT images. In all cases, self-calibration improved the FWHM—e.g. on the CBCT bench, FWHM  =  0.86 mm for conventional calibration compared to 0.65 mm for self-calibration (p  <  0.001). Similar improvements were measured in RPE—e.g. on the robotic C-arm, RPE  =  0.73 mm for conventional calibration compared to 0.55 mm for self-calibration (p  <  0.001). Visible improvement was evident in CBCT reconstructions using self-calibration, particularly about high-contrast, high-frequency objects (e.g. temporal bone air cells and a surgical needle). The results indicate that self-calibration can improve even upon systems with presumably accurate geometric calibration and is

The evolving professional nursing self-image of students in baccalaureate programs: a cross-sectional survey.

Science.gov (United States)

Milisen, Koen; De Busser, Tinne; Kayaert, Annelore; Abraham, Ivo; de Casterlé, Bernadette Dierckx

2010-06-01

We have previously examined the professional self-image of practicing nurses in Belgium and its association with various professional decisions, however there is limited knowledge about the professional self-image of nurses-to-be. Despite prior research on nursing students' perceptions of nursing or their self-esteem, students' professional image, defined as "the way students perceive themselves in their clinical practice environment and their anticipated work environment", has not been described nor compared to that of practicing nurses. To describe the professional nursing self-image among students in their final year of baccalaureate education. Cross-sectional survey. Nine geographically spread baccalaureate programs in the Flemish region of Belgium. 427 evaluable students from 455 recruited from 663 potential. Data collected in each school during regular hours using an adapted version of the BELIMAGE (Belgian professional self-image instrument for hospital nurses) including questions on personal demographics, education and competence, nursing care, team and practice environment. Voluntary participation with returned questionnaire deemed informed consent. Respondents identified several curricular components as contributing to their perceived competence. They also identified several skills deemed important to professional nursing, however did not feel competent in all of these. Important nursing care aspects included individualizing patient care, detecting care problems and potential complications, and promoting patient well-being; within a care environment with open interdisciplinary communication, where care problems could be discussed with nursing colleagues, where one cares for the same patient regularly, and led by a team leader with vision. Society's view of nursing was generally more negative than students'. Most students planned on working in nursing after their studies and many had thought about additional education at some point. Most were proud of

Effects of tooth root contact on the stability of orthodontic anchor screws in the maxilla: Comparison between self-drilling and self-tapping methods.

Science.gov (United States)

Iwai, Hiroaki; Motoyoshi, Mitsuru; Uchida, Yasuki; Matsuoka, Miho; Shimizu, Noriyoshi

2015-04-01

We evaluated the effects of screw placement angle on the frequency of root contact and the effects of root contact on screw stability, comparing self-drilling and self-tapping methods. In total, 80 patients with 142 screws (diameter, 1.6 mm; length, 8.0 mm) were included. Cone-beam computed tomography images were taken. Cortical bone thickness, interroot distance, shortest distance between the screw and adjacent tooth root, and screw placement angle were measured. The success rates of the screws were 91.5% for the self-drilling method and 94.4% for the self-tapping method (P >0.05). The self-drilling screws tended to contact the distal tooth roots in the right maxilla. In the self-drilling method, the failure rate was significantly higher in the root contact group than in the no-contact group (P tapping methods in the maxilla. Avoidance of tooth root contact may improve the success rate more in the self-drilling method than in the self-tapping method. Copyright © 2015 American Association of Orthodontists. Published by Elsevier Inc. All rights reserved.

Distortion of self-image: risk factor for obesity in children and teenagers

Directory of Open Access Journals (Sweden)

Mercedes Rizo-Baeza

2014-12-01

Full Text Available Introduction: Self-image is important in the behaviour and lifestyle of children and adolescents. Analysing the self-image they have and the factors that might influence their distortion, can be used to prevent problems of obesity and anorexia. The main objective of present publication was to analyse the risk factors that may contribute to self-image distortion.Material and Methods: A descriptive survey study was conducted among 659 children and adolescents in two social classes (low and medium-high, measuring height and weight, calculating BMI percentile for age and gender. Body image and self-perception were registered.Results: The percentage of overweight-obesity is higher in scholars (41.8% boys, 28.7% girls than in adolescents (30.1% and 22.2% respectively, with no difference between socioeconomic classes. The multinomial logistic regression analysis gives a risk of believing thinner higher (p=0.000 among boys OR=2.9(95%CI:1.43-3.37, school (p=0.000 OR=2.42(95%CI:1.56-3.76 and much lower (p=0.000 between normally nourished OR=0.08(95%CI:0.05-0.13, with no differences according to socioeconomic status. The risk of believing fatter is lower (p=0.000 between boys OR=0.28(95%CI:0.14-0.57, school(p=0.072 OR=0.54(95%CI:0.27-1.6, and much higher among underweight (p=0.000 OR=9x108 (95% CI:4x108-19x108.Conclusions: Are risk factors of believing thinner: males, being in a group of schoolchildren and overweight-obesity. Conversely, are risk factors of believing fatter: females, teen and above all, be thin.  

Feeling like me again: a grounded theory of the role of breast reconstruction surgery in self-image.

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McKean, L N; Newman, E F; Adair, P

2013-07-01

The present study aimed to develop a theoretical understanding of the role of breast reconstruction in women's self-image. Semi-structured interviews were conducted with 10 women from breast cancer support groups who had undergone breast reconstruction surgery. A grounded theory methodology was used to explore their experiences. The study generated a model of 'breast cancer, breast reconstruction and self-image', with a core category entitled 'feeling like me again' and two principal categories of 'normal appearance' and 'normal life'. A further two main categories, 'moving on' and 'image of sick person' were generated. The results indicated a role of breast reconstruction in several aspects of self-image including the restoration of pre-surgery persona, which further promoted adjustment. © 2013 John Wiley & Sons Ltd.

The nursing profession: public image, self-concept and professional identity. A discussion paper.

Science.gov (United States)

ten Hoeve, Yvonne; Jansen, Gerard; Roodbol, Petrie

2014-02-01

To discuss the actual public image of nurses and other factors that influence the development of nurses' self-concept and professional identity. Nurses have become healthcare professionals in their own right who possess a great deal of knowledge. However, the public does not always value the skills and competences nurses have acquired through education and innovation. Discussion paper. We identified 1216 relevant studies by searching MEDLINE, CINAHL and PsycINFO databases in the period 1997-2010. Finally, 18 studies met our inclusion criteria. The included studies show that the actual public image of nursing is diverse and incongruous. This image is partly self-created by nurses due to their invisibility and their lack of public discourse. Nurses derive their self-concept and professional identity from their public image, work environment, work values, education and traditional social and cultural values. Nurses should work harder to communicate their professionalism to the public. Social media like the Internet and YouTube can be used to show the public what they really do. To improve their public image and to obtain a stronger position in healthcare organizations, nurses need to increase their visibility. This could be realized by ongoing education and a challenging work environment that encourages nurses to stand up for themselves. Furthermore, nurses should make better use of strategic positions, such as case manager, nurse educator or clinical nurse specialist and use their professionalism to show the public what their work really entails. © 2013 John Wiley & Sons Ltd.

Functional imaging of murine hearts using accelerated self-gated UTE cine MRI.

Science.gov (United States)

Motaal, Abdallah G; Noorman, Nils; de Graaf, Wolter L; Hoerr, Verena; Florack, Luc M J; Nicolay, Klaas; Strijkers, Gustav J

2015-01-01

We introduce a fast protocol for ultra-short echo time (UTE) Cine magnetic resonance imaging (MRI) of the beating murine heart. The sequence involves a self-gated UTE with golden-angle radial acquisition and compressed sensing reconstruction. The self-gated acquisition is performed asynchronously with the heartbeat, resulting in a randomly undersampled kt-space that facilitates compressed sensing reconstruction. The sequence was tested in 4 healthy rats and 4 rats with chronic myocardial infarction, approximately 2 months after surgery. As a control, a non-accelerated self-gated multi-slice FLASH sequence with an echo time (TE) of 2.76 ms, 4.5 signal averages, a matrix of 192 × 192, and an acquisition time of 2 min 34 s per slice was used to obtain Cine MRI with 15 frames per heartbeat. Non-accelerated UTE MRI was performed with TE = 0.29 ms, a reconstruction matrix of 192 × 192, and an acquisition time of 3 min 47 s per slice for 3.5 averages. Accelerated imaging with 2×, 4× and 5× undersampled kt-space data was performed with 1 min, 30 and 15 s acquisitions, respectively. UTE Cine images up to 5× undersampled kt-space data could be successfully reconstructed using a compressed sensing algorithm. In contrast to the FLASH Cine images, flow artifacts in the UTE images were nearly absent due to the short echo time, simplifying segmentation of the left ventricular (LV) lumen. LV functional parameters derived from the control and the accelerated Cine movies were statistically identical.

Being authentic is the new image: a qualitative study on the authenticity constructions and self-images of Christian millennials in Africa

OpenAIRE

Counted, Victor

2016-01-01

The article is a qualitative study that focuses on the authenticity and self-construction of Christian millennials in Africa. While exploring how 15 respondents manifested their authentic self-behaviours using a case study design, the hallmark of the study was to observe the common coping mechanism of self-regulation, adopted by respondents to deal with their internal crisis. This coping strategy was employed as they remained true to self by creating new “authentic” images of themselves in th...

The Self-Image of Adolescents: A Study of Four Cultures.

Science.gov (United States)

Offer, D.; And Others

The Offer Self Image Questionnaire measures adolescent personality and adjustment from a psychodynamic perspective. It has been used by many investigators who administered the test to a large variety of teenage populations, and has significantly differentiated between normal, delinquent and disturbed populations; males and females; younger and…

Usefulness of Image Theater Workshops for Exploring Dilemmas in Diabetes Self-Management Among Adolescents.

Science.gov (United States)

Kupper, Frank; Peters, Louk W H; Stuijfzand, Sarah M; den Besten, Heleen A A; van Kesteren, Nicole M C

2018-01-01

Diabetes treatment involves a demanding self-management regime that is particularly challenging to adolescents. There is a need for qualitative research into the specific contexts in which adolescents attempt to balance self-management demands with the needs and desires of adolescent life. This study investigates the usefulness of image theater, a participatory form of theater using the body as an expressive tool, to articulate these dilemmas in daily life contexts. We performed a qualitative analysis of two image theater workshops with 12- to 18-year-old adolescents living with diabetes. Our results show three areas of application: (a) unraveling the contextual complexity of lived experience, (b) the articulation of implicit understandings and underlying motives, and (c) the playful exploration of new behavior. We conclude that image theater is a promising method, especially with respect to the opportunities of a more contextual and action-oriented understanding of the trade-offs made in self-management provide for diabetes education and counseling.

Identifying regions of interest in medical images using self-organizing maps.

Science.gov (United States)

Teng, Wei-Guang; Chang, Ping-Lin

2012-10-01

Advances in data acquisition, processing and visualization techniques have had a tremendous impact on medical imaging in recent years. However, the interpretation of medical images is still almost always performed by radiologists. Developments in artificial intelligence and image processing have shown the increasingly great potential of computer-aided diagnosis (CAD). Nevertheless, it has remained challenging to develop a general approach to process various commonly used types of medical images (e.g., X-ray, MRI, and ultrasound images). To facilitate diagnosis, we recommend the use of image segmentation to discover regions of interest (ROI) using self-organizing maps (SOM). We devise a two-stage SOM approach that can be used to precisely identify the dominant colors of a medical image and then segment it into several small regions. In addition, by appropriately conducting the recursive merging steps to merge smaller regions into larger ones, radiologists can usually identify one or more ROIs within a medical image.

Free-space entangled quantum carpets

Science.gov (United States)

Barros, Mariana R.; Ketterer, Andreas; Farías, Osvaldo Jiménez; Walborn, Stephen P.

2017-04-01

The Talbot effect in quantum physics is known to produce intricate patterns in the probability distribution of a particle, known as "quantum carpets," corresponding to the revival and replication of the initial wave function. Recently, it was shown that one can encode a D -level qudit in such a way that the Talbot effect can be used to process the D -dimensional quantum information [Farías et al., Phys. Rev. A 91, 062328 (2015), 10.1103/PhysRevA.91.062328]. Here we introduce a scheme to produce free-propagating "entangled quantum carpets" with pairs of photons produced by spontaneous parametric down-conversion. First we introduce an optical device that can be used to synthesize arbitrary superposition states of Talbot qudits. Sending spatially entangled photon pairs through a pair of these devices produces an entangled pair of qudits. As an application, we show how the Talbot effect can be used to test a D -dimensional Bell inequality. Numerical simulations show that violation of the Bell inequality depends strongly on the amount of spatial correlation in the initial two-photon state. We briefly discuss how our optical scheme might be adapted to matter wave experiments.

Eating disorders risk and its relation to self-esteem and body image in Iranian university students of medical sciences.

Science.gov (United States)

Naeimi, Alireza Farsad; Haghighian, Hossein Khadem; Gargari, Bahram Pourghassem; Alizadeh, Mohammad; Rouzitalab, Tohid

2016-12-01

Eating disorders are rapidly increasing in young adults. But, a few studies have examined the risk of eating disorders and body image in university students of non-Western societies. The current study aimed to assess eating disorders risk in relation to body image and self-esteem among Iranian university students. The participants were 430 students from Tabriz, between April and May 2015. The 26-item Eating Attitude Test (EAT-26), Multidimensional Body-Self Relations Questionnaire (MBSRQ) and Rosenberg's Self-Esteem Questionnaires were used. EAT-26 score of 20 or more was considered as eating disorders risk cutoff. Majority of the students (68 %) were females. The overall eating disorders risk was 9.5 % (7.5 and 10.5 % in men and women, respectively). Further, the prevalence of poor body image and low self-esteem was 34.2 and 16 %, respectively. Neither of the gender differences was statistically significant (p > 0.05). In simple logistic regression, there were significant associations between self-esteem, body image, parental education and eating disorders risk (p self-esteem (OR = 0.37, 95 % = 0.16-0.87) and mother's education level (OR = 2.78, 95 % = 1.30-5.93) were predictors of eating disorders risk. The findings revealed that low self-esteem and mother's higher education may increase eating disorders risk and the predictive role of body image possibly is by other mediators such as self-esteem. This warrants awareness improvement and developing appropriate interventions targeting self-esteem and self-respect of students.

Self-Assembled Polyelectrolyte Nanoparticles as Fluorophore-Free Contrast Agents for Multicolor Optical Imaging

Directory of Open Access Journals (Sweden)

Da Hye Shin

2015-03-01

Full Text Available In this work, we describe the fabrication of self-assembled polyelectrolyte nanoparticles that provide a multicolor optical imaging modality. Poly(γ-glutamic acid(γ-PGA formed self-assembled nanoparticles through electrostatic interactions with two different cationic polymers: poly(L-lysine(PLL and chitosan. The self-assembled γ-PGA/PLL and γ-PGA/chitosan nanoparticles were crosslinked by glutaraldehyde. Crosslinking of the ionic self-assembled nanoparticles with glutaraldehyde not only stabilized the nanoparticles but also generated a strong autofluorescence signal. Fluorescent Schiff base bonds (C=N and double bonds (C=C were generated simultaneously by crosslinking of the amine moiety of the cationic polyelectrolytes with monomeric glutaraldehyde or with polymeric glutaraldehyde. The unique optical properties of the nanoparticles that resulted from the crosslinking by glutaraldehyde were analyzed using UV/Vis and fluorescence spectroscopy. We observed that the fluorescence intensity of the nanoparticles could be regulated by adjusting the crosslinker concentration and the reaction time. The nanoparticles also exhibited high performance in the labeling and monitoring of therapeutic immune cells (macrophages and dendritic cells. These self-assembled nanoparticles are expected to be a promising multicolor optical imaging contrast agent for the labeling, detection, and monitoring of cells.

Body Image and Self-Esteem among Adolescent Girls: Testing the Influence of Sociocultural Factors

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Clay, Daniel; Vignoles, Vivian L.; Dittmar, Helga

2005-01-01

In Western cultures, girls' self-esteem declines substantially during middle adolescence, with changes in body image proposed as a possible explanation. Body image develops in the context of sociocultural factors, such as unrealistic media images of female beauty. In a study of 136 U.K. girls aged 11-16, experimental exposure to either ultra-thin…

Real-time terahertz imaging through self-mixing in a quantum-cascade laser

Energy Technology Data Exchange (ETDEWEB)

Wienold, M., E-mail: martin.wienold@dlr.de; Rothbart, N.; Hübers, H.-W. [Institute of Optical Sensor Systems, German Aerospace Center (DLR), Rutherfordstr. 2, 12489 Berlin (Germany); Department of Physics, Humboldt-Universität zu Berlin, Newtonstr. 15, 12489 Berlin (Germany); Hagelschuer, T. [Institute of Optical Sensor Systems, German Aerospace Center (DLR), Rutherfordstr. 2, 12489 Berlin (Germany); Schrottke, L.; Biermann, K.; Grahn, H. T. [Paul-Drude-Institut für Festkörperelektronik, Leibniz-Institut im Forschungsverbund Berlin e. V., Hausvogteiplatz 5-7, 10117 Berlin (Germany)

2016-07-04

We report on a fast self-mixing approach for real-time, coherent terahertz imaging based on a quantum-cascade laser and a scanning mirror. Due to a fast deflection of the terahertz beam, images with frame rates up to several Hz are obtained, eventually limited by the mechanical inertia of the employed scanning mirror. A phase modulation technique allows for the separation of the amplitude and phase information without the necessity of parameter fitting routines. We further demonstrate the potential for transmission imaging.

Body image and self-esteem in disorders of sex development: A European multicenter study.

Science.gov (United States)

van de Grift, Tim C; Cohen-Kettenis, Peggy T; de Vries, Annelou L C; Kreukels, Baudewijntje P C

2018-04-01

Disorders/differences of sex development (DSD) refer to congenital conditions with atypical sex development and are associated with psychosexual issues. The aim of this study was to assess body image and self-esteem across the DSD spectrum and to study the impact of diagnosis and mediating characteristics. Data collection was part of dsd-LIFE, a cross-sectional study conducted by 14 European expert clinics on wellbeing and health care evaluation of adults diagnosed with DSD. Main outcome measures in the present analyses were the Body Image Scale and Rosenberg Self-Esteem Scale. Additional data were obtained on treatments, openness, body embarrassment, sexual satisfaction, anxiety, and depression. The participating sample (n = 1,040) included 226 classified as Congenital Adrenal Hyperplasia, 225 as Klinefelter Syndrome, 322 as Turner Syndrome, and 267 as conditions with 46,XY karyotype. Many participants had received hormonal and surgical treatments. Participants scored lower on body image and self-esteem compared to control values, whereas each diagnosis showed different areas of concern. Limited openness, body embarrassment, and sexual issues were frequently reported. Overall body satisfaction was associated with BMI, hormone use, openness, body embarrassment, anxiety, and depression; genital satisfaction with age at diagnosis, openness, sexual satisfaction, and body embarrassment. Body embarrassment, anxiety, and depression predicted lower self-esteem. While each DSD showed specific issues related to body image and self-esteem, our findings indicate that the related factors were similar across the conditions. Clinical care on this subject could be improved by giving specific attention to factors like openness, body embarrassment, sexuality, anxiety, and depression. (PsycINFO Database Record (c) 2018 APA, all rights reserved).

Semantic structures of world image as internal factors in the self-destructive behavior of today’s teenagers.

Directory of Open Access Journals (Sweden)

Koroleva N.N.

2015-03-01

Full Text Available This article presents the results of a theoretical and methodological analysis and empirical study of semantic formations in the structure of a world image as factors in teenagers’ self-destructive behavior in contemporary Russian society. During the teenage years the value-semantic bases of a world image are being formed. A world image is the integral, multilevel representation of the subject, which consists of social reality and himself/herself; it exists in the mind as a unity of sensual fabrications, significations, and personalized meanings. Transformations of semantic components of a world image that are inadequate for the environment or that are externally and internally rigid can serve as preconditions for disadaptation and for one of its extreme forms—self-destructive behavior. The purpose of our empirical research was to determine the main characteristics of basic conceptual formations in the structure of a world image—that is, attitudes, intentions, motives, and values— that serve as predictors of disadaptation in modern teenagers. The teenagers in the study were born in different generations with a ten-year interval (1990–1991 and 2000–2001. Our empirical research of the semantic world-image structures that serve as bases for the self-destructive behavior of modern teenagers consisted of two phases. The first phase provided a comparative analysis of the relationships, value preferences, and basic conceptual intentions that raise the possibility of disadaptation and self-destructive behavior among teenagers. In order to perform this analysis, we analyzed data from the Character-Pathological Diagnostic Poll (PDP of A. E. Lichko. During the second phase, a comparative analysis was carried out of the basic semantic components of teenagers’ images of the world and self-destructive and normative behavior. The main conceptual world-image structures were defined with the help of projective methods: the Thematic Apperception

Self-calibrated correlation imaging with k-space variant correlation functions.

Science.gov (United States)

Li, Yu; Edalati, Masoud; Du, Xingfu; Wang, Hui; Cao, Jie J

2018-03-01

Correlation imaging is a previously developed high-speed MRI framework that converts parallel imaging reconstruction into the estimate of correlation functions. The presented work aims to demonstrate this framework can provide a speed gain over parallel imaging by estimating k-space variant correlation functions. Because of Fourier encoding with gradients, outer k-space data contain higher spatial-frequency image components arising primarily from tissue boundaries. As a result of tissue-boundary sparsity in the human anatomy, neighboring k-space data correlation varies from the central to the outer k-space. By estimating k-space variant correlation functions with an iterative self-calibration method, correlation imaging can benefit from neighboring k-space data correlation associated with both coil sensitivity encoding and tissue-boundary sparsity, thereby providing a speed gain over parallel imaging that relies only on coil sensitivity encoding. This new approach is investigated in brain imaging and free-breathing neonatal cardiac imaging. Correlation imaging performs better than existing parallel imaging techniques in simulated brain imaging acceleration experiments. The higher speed enables real-time data acquisition for neonatal cardiac imaging in which physiological motion is fast and non-periodic. With k-space variant correlation functions, correlation imaging gives a higher speed than parallel imaging and offers the potential to image physiological motion in real-time. Magn Reson Med 79:1483-1494, 2018. © 2017 International Society for Magnetic Resonance in Medicine. © 2017 International Society for Magnetic Resonance in Medicine.

Breakfast food health and acute exercise: Effects on state body image.

Science.gov (United States)

Hayes, Jacqueline F; Giles, Grace E; Mahoney, Caroline R; Kanarek, Robin B

2018-05-10

Food intake and exercise have been shown to alter body satisfaction in a state-dependent manner. One-time consumption of food perceived as unhealthy can be detrimental to body satisfaction, whereas an acute bout of moderate-intensity aerobic exercise can be beneficial. The current study examined the effect of exercise on state body image and appearance-related self-esteem following consumption of isocaloric foods perceived as healthy or unhealthy in 36 female college students (18-30 years old) in the Northeastern United States. Using a randomized-controlled design, participants attended six study sessions with breakfast conditions (healthy, unhealthy, no food) and activity (exercise, quiet rest) as within-participants factors. Body image questionnaires were completed prior to breakfast condition, between breakfast and activity conditions, and following activity condition. Results showed that consumption of an unhealthy breakfast decreased appearance self-esteem and increased body size perception, whereas consumption of a healthy breakfast did not influence appearance self-esteem but increased body size perception. Exercise did not influence state body image attitudes or perceptions following meal consumption. Study findings suggest that morning meal type, but not aerobic exercise, influence body satisfaction in college-aged females. Copyright © 2018. Published by Elsevier Ltd.

The relationships between sense of belonging to the gay community, body image dissatisfaction, and self-esteem among Australian gay men.

Science.gov (United States)

Kousari-Rad, Pantea; McLaren, Suzanne

2013-01-01

Body image dissatisfaction has been linked to belonging to the gay community and poor self-esteem among gay men. This study was designed to explore the applicability of a moderation model and a mediation model in explaining the relations between sense of belonging to the gay community, body image dissatisfaction and self-esteem among 90 self-identified Australian gay men. Participants completed the psychological subscale of the Sense of Belonging Instrument, the Body Satisfaction Scale, and the Rosenberg Self-Esteem Scale. Results supported the moderation model; the relation between body image dissatisfaction and self-esteem was found to be statistically significant only at average and high levels of belonging to the gay community. The mediation model was also supported; body image dissatisfaction partially mediated the sense of belonging-self-esteem relation. Educating gay men and health professionals about the possible negative outcomes of "belonging" to an appearance-oriented community is important.

Body Image, Self-Esteem, and Depression-Proneness: Closing the Gender Gap.

Science.gov (United States)

McCaulay, Marci; And Others

1988-01-01

Examines gender differences in body image and its relationship to depression-proneness and self-esteem. Findings indicate a preoccupation with body weight and appearance for both men and women, and a relationship between body satisfaction and depression-proneness. (FMW)

Condom use self-efficacy: effect on intended and actual condom use in adolescents.

Science.gov (United States)

Baele, J; Dusseldorp, E; Maes, S

2001-05-01

To investigate aspects of adolescents' condom use self-efficacy that affect their intended and actual condom use. Four hundred twenty-four male and female sexually experienced and inexperienced adolescents with a mean age of 17.0 years filled out a questionnaire concerning condom use self-efficacy and intended and actual condom use. Specific condom use self-efficacy scales were constructed from 37 items on the basis of a principal component analysis. The effect of self-efficacy, both as a global measure and in terms of specific scales, on condom use intention and consistency was assessed using multiple hierarchic regression analyses. Six specific self-efficacy scales were constructed: Technical Skills, Image Confidence, Emotion Control, Purchase, Assertiveness, and Sexual Control. In sexually inexperienced adolescents, global self-efficacy explained 48%, the six self-efficacy scales 30%, and both together 51% of the variance in intention, after statistical control for gender, age, and education level. In the sexually experienced sample, this was 40%, 50%, and 57% for intention, and 23%, 29%, and 33% for consistency of condom use. Significant predictors of intention in the final model were gender, age, global self-efficacy and purchasing skills in the inexperienced sample, and global self-efficacy, emotion control, assertiveness, image confidence, and sexual control in the experienced sample, whereas gender, age, global self-efficacy, emotion control, assertiveness, and purchase predicted consistency of condom use in the experienced sample. Condom use self-efficacy is a multidimensional construct. Intended and actual condom use in adolescents are best predicted by self-efficacy measures that include both global and relevant specific aspects of condom use.

Self-Organizing Maps for Fingerprint Image Quality Assessment

DEFF Research Database (Denmark)

Olsen, Martin Aastrup; Tabassi, Elham; Makarov, Anton

2013-01-01

Fingerprint quality assessment is a crucial task which needs to be conducted accurately in various phases in the biometric enrolment and recognition processes. Neglecting quality measurement will adversely impact accuracy and efficiency of biometric recognition systems (e.g. verification and iden......Fingerprint quality assessment is a crucial task which needs to be conducted accurately in various phases in the biometric enrolment and recognition processes. Neglecting quality measurement will adversely impact accuracy and efficiency of biometric recognition systems (e.g. verification...... machine learning techniques. We train a self-organizing map (SOM) to cluster blocks of fingerprint images based on their spatial information content. The output of the SOM is a high-level representation of the finger image, which forms the input to a Random Forest trained to learn the relationship between...

Acculturation, Body Image, Self-Esteem, and Eating-Disorder Symptomatology in Adolescent Mexican American Women.

Science.gov (United States)

Joiner, Greg W.; Kashubeck, Susan

1996-01-01

Investigated the relationship among acculturation, body image, self-esteem, and eating disorder symptomatology in 120 Mexican-American adolescent women. Findings indicate that acculturation levels were not related to anorexic or bulimic symptomatology, self-esteem, body dissatisfaction or thinness of ideal and attractive figures. Also, lower…

Body Image across the Life Span in Adult Women: The Role of Self-Objectification.

Science.gov (United States)

Tiggemann, Marika; Lynch, Jessica E.

2001-01-01

Investigated body image across life span in cross-section of women ages 20-84 years. Found that although body dissatisfaction remained stable, self-objectification, habitual body monitoring, appearance anxiety, and disordered eating all significantly decreased with age. Self- objectification mediated the relationship between age and disordered…

Understanding Self-Effects in Social Media

NARCIS (Netherlands)

Valkenburg, P.M.

2017-01-01

The aim of this article is to improve understanding of self-effects in social media, and to compare self-effects with reception effects. Self-effects are the effects of messages the cognitions, emotions, attitudes, and behaviors of the message creators/senders themselves. A total of 4 theories have

The role of body image and self-perception in anorexia nervosa: the neuroimaging perspective.

Science.gov (United States)

Esposito, Roberto; Cieri, Filippo; di Giannantonio, Massimo; Tartaro, Armando

2018-03-01

Anorexia nervosa is a severe psychiatric illness characterized by intense fear of gaining weight, relentless pursuit of thinness, deep concerns about food and a pervasive disturbance of body image. Functional magnetic resonance imaging tries to shed light on the neurobiological underpinnings of anorexia nervosa. This review aims to evaluate the empirical neuroimaging literature about self-perception in anorexia nervosa. This narrative review summarizes a number of task-based and resting-state functional magnetic resonance imaging studies in anorexia nervosa about body image and self-perception. The articles listed in references were searched using electronic databases (PubMed and Google Scholar) from 1990 to February 2016 using specific key words. All studies were reviewed with regard to their quality and eligibility for the review. Differences in brain activity were observed using body image perception and body size estimation tasks showing significant modifications in activity of specific brain areas (extrastriate body area, fusiform body area, inferior parietal lobule). Recent studies highlighted the role of emotions and self-perception in anorexia nervosa and their neural substrate involving resting-state networks and particularly frontal and posterior midline cortical structures within default mode network and insula. These findings open new horizons to understand the neural substrate of anorexia nervosa. © 2016 The British Psychological Society.

Incorporating positive body image into the treatment of eating disorders: A model for attunement and mindful self-care.

Science.gov (United States)

Cook-Cottone, Catherine P

2015-06-01

This article provides a model for understanding the role positive body image can play in the treatment of eating disorders and methods for guiding patients away from symptoms and toward flourishing. The Attuned Representational Model of Self (Cook-Cottone, 2006) and a conceptual model detailing flourishing in the context of body image and eating behavior (Cook-Cottone et al., 2013) are discussed. The flourishing inherent in positive body image comes hand-in-hand with two critical ways of being: (a) having healthy, embodied awareness of the internal and external aspects of self (i.e., attunement) and (b) engaging in mindful self-care. Attunement and mindful self-care thus are considered as potential targets of actionable therapeutic work in the cultivation of positive body image among those with disordered eating. For context, best-practices in eating disorder treatment are also reviewed. Limitations in current research are detailed and directions for future research are explicated. Copyright © 2015 Elsevier Ltd. All rights reserved.

Visual Impairment and Its Effect on the Development of the Self-Concept.

Science.gov (United States)

Gish, R. Brian

This doctoral dissertation compares the self-concept of people with visual impairments with that of normally sighted individuals in 14 studies from various geographical regions in the United States. Discussion of methodological issues examines first, definitions regarding the self (self-image, self-perception, self-evaluation, self-esteem,…

The Moral Self-Image Scale: Measuring and Understanding the Malleability of the Moral Self.

Science.gov (United States)

Jordan, Jennifer; Leliveld, Marijke C; Tenbrunsel, Ann E

2015-01-01

Recent ethical decision-making models suggest that individuals' own view of their morality is malleable rather than static, responding to their (im)moral actions and reflections about the world around them. Yet no construct currently exists to represent the malleable state of a person's moral self-image (MSI). In this investigation, we define this construct, as well as develop a scale to measure it. Across five studies, we show that feedback about the moral self alters an individual's MSI as measured by our scale. We also find that the MSI is related to, but distinct from, related constructs, including moral identity, self-esteem, and moral disengagement. In Study 1, we administered the MSI scale and several other relevant scales to demonstrate convergent and discriminant validity. In Study 2, we examine the relationship between the MSI and one's ought versus ideal self. In Studies 3 and 4, we find that one's MSI is affected in the predicted directions by manipulated feedback about the moral self, including feedback related to social comparisons of moral behavior (Study 3) and feedback relative to one's own moral ideal (Study 4). Lastly, Study 5 provides evidence that the recall of one's moral or immoral behavior alters people's MSI in the predicted directions. Taken together, these studies suggest that the MSI is malleable and responds to individuals' moral and immoral actions in the outside world. As such, the MSI is an important variable to consider in the study of moral and immoral behavior.

Compressive sensing sectional imaging for single-shot in-line self-interference incoherent holography

Science.gov (United States)

Weng, Jiawen; Clark, David C.; Kim, Myung K.

2016-05-01

A numerical reconstruction method based on compressive sensing (CS) for self-interference incoherent digital holography (SIDH) is proposed to achieve sectional imaging by single-shot in-line self-interference incoherent hologram. The sensing operator is built up based on the physical mechanism of SIDH according to CS theory, and a recovery algorithm is employed for image restoration. Numerical simulation and experimental studies employing LEDs as discrete point-sources and resolution targets as extended sources are performed to demonstrate the feasibility and validity of the method. The intensity distribution and the axial resolution along the propagation direction of SIDH by angular spectrum method (ASM) and by CS are discussed. The analysis result shows that compared to ASM the reconstruction by CS can improve the axial resolution of SIDH, and achieve sectional imaging. The proposed method may be useful to 3D analysis of dynamic systems.

Source apportionment of PM{sub 10} utilising Automatic Cartridge Collection Unit (ACCU) and TEOM systems in Neath Port Talbot

Energy Technology Data Exchange (ETDEWEB)

Hooper, M.J.; Hollingsworth, P. [Neath Port Talbot Borough Council, Neath Port Talbot (United Kingdom); Stone, I.M.; Merefield, J.R. [Exeter Univ., Earth Resources Centre, Exeter (United Kingdom)

1999-10-01

The background to this study is the review and assessment of air quality as required by Part IV of the Environment Act 1995. A detailed emissions inventory indicated that there might be a significant problem with PM{sub 10} in the Taibach/Margam area of Port Talbot. This was confirmed by continuous monitoring data from the Automatic Urban Network site in the area at Groeswen hospital. These data, when coupled with wind direction data, enabled the production of pollution roses that showed that the highest average PM{sub 10} levels occurred when the wind was blowing towards the residential area from a large significant local source in the west and south-west, i.e. a steel works. The Council is carrying out a stage 3 assessment of PM{sub 10} in this area with a high probability that an Air Quality Management Action Area (AQMA) will need to be declared. It has therefore become clear, that in order to be able to proceed sensibly to an action plan and attempt to meet Air Quality Objectives, identification of the contribution of PM{sub 10} from specific sources would be required. Initial fingerprinting studies were carried out in partnership with Exeter university and, at an early stage, an Air Quality Management Working Group was formed with the works and the Environment Agency to enable constructive dialogue to take place. (Author)

Electron density and effective atomic number (Zeff) determination through x-ray Moiré deflectometry

Science.gov (United States)

Valdivia Leiva, Maria Pia; Stutman, Dan; Finkenthal, Michael

2014-10-01

Talbot-Lau based Moiré deflectometry is a powerful density diagnostic capable of delivering refraction information and attenuation from a single image, through the accurate detection of X-ray phase-shift and intensity. The technique is able to accurately measure both the real part of the index of refraction δ (directly related to electron density) and the attenuation coefficient μ of an object placed in the x-ray beam. Since the atomic number Z (or Zeff for a composite sample) is proportional to these quantities, an elemental map of the effective atomic number can be obtained with the ratio of the phase and the absorption image. The determination of Zeff from refraction and attenuation measurements with Moiré deflectometry could be of high interest in various fields of HED research such as shocked materials and ICF experiments as Zeff is linked, by definition, to the x-ray absorption properties of a specific material. This work is supported by U.S. DoE/NNSA Grant No. 435 DENA0001835.

Feasibility of self-gated isotropic radial late-phase MR imaging of the liver

Energy Technology Data Exchange (ETDEWEB)

Weiss, Jakob; Taron, Jana; Othman, Ahmed E.; Kuendel, Matthias; Martirosian, Petros; Ruff, Christer; Schraml, Christina; Nikolaou, Konstantin; Notohamiprodjo, Mike [Eberhard Karls University Tuebingen, Department of Diagnostic and Interventional Radiology, Tuebingen (Germany); Grimm, Robert [Siemens Healthcare MR, Erlangen (Germany)

2017-03-15

To evaluate feasibility of a 3D-isotropic self-gated radial volumetric interpolated breath-hold examination (VIBE) for late-phase MRI of the liver. 70 patients were included and underwent liver MRI at 1.5 T. Depending on the diagnosis, either Gd-EOB-DTPA (35 patients) or gadobutrol (35 patients) were administered. During late (gadobutrol) or hepatocyte-specific phase (Gd-EOB-DTPA), a radial prototype sequence was acquired and reconstructed using (1) self-gating with 40 % acceptance (rVIBE{sub 40}); (2) with 100 % acceptance of the data (rVIBE{sub 100}) and compared to Cartesian VIBE (cVIBE). Images were assessed qualitatively (image quality, lesion conspicuity, artefacts; 5-point Likert-scale: 5 = excellent; two independent readers) and quantitatively (coefficient-of-variation (CV); contrast-ratio) in axial and coronal reformations. In eight cases only rVIBE provided diagnostic image quality. Image quality of rVIBE{sub 40} was rated significantly superior (p < 0.05) in Gd-EOB-DTPA-enhanced and coronal reformatted examinations as compared to cVIBE. Lesion conspicuity was significantly improved (p < 0.05) in coronal reformatted Gd-EOB-DTPA-enhanced rVIBE{sub 40} in comparison to cVIBE. CV was higher in rVIBE{sub 40} as compared to rVIBE{sub 100}/cVIBE (p < 0.01). Gadobutrol-enhanced rVIBE{sub 40} and cVIBE showed higher contrast-ratios than rVIBE{sub 100} (p < 0.001), whereas no differences were found in Gd-EOB-DTPA-enhanced examinations. Self-gated 3D-isotropic rVIBE provides significantly superior image quality compared to cVIBE, especially in multiplanar reformatted and Gd-EOB-DTPA-enhanced examinations. (orig.)

Feasibility of self-gated isotropic radial late-phase MR imaging of the liver

International Nuclear Information System (INIS)

Weiss, Jakob; Taron, Jana; Othman, Ahmed E.; Kuendel, Matthias; Martirosian, Petros; Ruff, Christer; Schraml, Christina; Nikolaou, Konstantin; Notohamiprodjo, Mike; Grimm, Robert

2017-01-01

To evaluate feasibility of a 3D-isotropic self-gated radial volumetric interpolated breath-hold examination (VIBE) for late-phase MRI of the liver. 70 patients were included and underwent liver MRI at 1.5 T. Depending on the diagnosis, either Gd-EOB-DTPA (35 patients) or gadobutrol (35 patients) were administered. During late (gadobutrol) or hepatocyte-specific phase (Gd-EOB-DTPA), a radial prototype sequence was acquired and reconstructed using (1) self-gating with 40 % acceptance (rVIBE_4_0); (2) with 100 % acceptance of the data (rVIBE_1_0_0) and compared to Cartesian VIBE (cVIBE). Images were assessed qualitatively (image quality, lesion conspicuity, artefacts; 5-point Likert-scale: 5 = excellent; two independent readers) and quantitatively (coefficient-of-variation (CV); contrast-ratio) in axial and coronal reformations. In eight cases only rVIBE provided diagnostic image quality. Image quality of rVIBE_4_0 was rated significantly superior (p < 0.05) in Gd-EOB-DTPA-enhanced and coronal reformatted examinations as compared to cVIBE. Lesion conspicuity was significantly improved (p < 0.05) in coronal reformatted Gd-EOB-DTPA-enhanced rVIBE_4_0 in comparison to cVIBE. CV was higher in rVIBE_4_0 as compared to rVIBE_1_0_0/cVIBE (p < 0.01). Gadobutrol-enhanced rVIBE_4_0 and cVIBE showed higher contrast-ratios than rVIBE_1_0_0 (p < 0.001), whereas no differences were found in Gd-EOB-DTPA-enhanced examinations. Self-gated 3D-isotropic rVIBE provides significantly superior image quality compared to cVIBE, especially in multiplanar reformatted and Gd-EOB-DTPA-enhanced examinations. (orig.)

Three-Dimensional Imaging by Self-Reference Single-Channel Digital Incoherent Holography

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Rosen, Joseph; Kelner, Roy

2016-01-01

Digital holography offers a reliable and fast method to image a three-dimensional scene from a single perspective. This article reviews recent developments of self-reference single-channel incoherent hologram recorders. Hologram recorders in which both interfering beams, commonly referred to as the signal and the reference beams, originate from the same observed objects are considered as self-reference systems. Moreover, the hologram recorders reviewed herein are configured in a setup of a single channel interferometer. This unique configuration is achieved through the use of one or more spatial light modulators. PMID:28757811

Functional Store Image and Corporate Social Responsibility Image: A Congruity Analysis on Store Loyalty

OpenAIRE

Jamaliah Mohd. Yusof; Rosidah Musa; Sofiah Abd. Rahman

2011-01-01

With previous studies that examined the importance of functional store image and CSR, this study is aimed at examining their effects in the self-congruity model in influencing store loyalty. In particular, this study developed and tested a structural model in the context of retailing industry on the self-congruity theory. Whilst much of the self-congruity studies have incorporated functional store image, there has been lack of studies that examined social responsibility i...

Cross-cultural adaptation of the Female Genital Self-Image Scale (FGSIS) in Iranian female college students.

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Pakpour, Amir H; Zeidi, Isa Mohammadi; Ziaeiha, Masoumeh; Burri, Andrea

2014-01-01

The aim of the present study was to investigate the psychometric properties of a translated and culturally adapted Iranian version of the Female Genital Self-Image Scale (FGSIS-I) in a sample of college women. Further, the relationship between women's self-image, body appreciation, sexual functioning, and gynecological exam behavior was explored. A sample of 1,877 female students from five different universities across Qazvin and Tehran completed the Female Sexual Function Index (FSFI), the Body Appreciation Scale (BAS), the Rosenberg Self-Esteem Scale (RSES), the FGSIS-I, and a gynecological exam behavior questionnaire. Good to excellent internal consistency reliability, test-retest reliability, and convergent and construct validity were found. Exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) both provided a two-factor structure for the FGSIS-I. The validity of the FGSIS-I in predicting gynecological exam behavior of college women was tested using structural equation modeling (SEM). The final model accounted for 33% of the variance in gynecological exam behavior (p reliable instrument to assess female genital self-image in Iranian women.

Self-Calibrating Wave-Encoded Variable-Density Single-Shot Fast Spin Echo Imaging.

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Chen, Feiyu; Taviani, Valentina; Tamir, Jonathan I; Cheng, Joseph Y; Zhang, Tao; Song, Qiong; Hargreaves, Brian A; Pauly, John M; Vasanawala, Shreyas S

2018-04-01

It is highly desirable in clinical abdominal MR scans to accelerate single-shot fast spin echo (SSFSE) imaging and reduce blurring due to T 2 decay and partial-Fourier acquisition. To develop and investigate the clinical feasibility of wave-encoded variable-density SSFSE imaging for improved image quality and scan time reduction. Prospective controlled clinical trial. With Institutional Review Board approval and informed consent, the proposed method was assessed on 20 consecutive adult patients (10 male, 10 female, range, 24-84 years). A wave-encoded variable-density SSFSE sequence was developed for clinical 3.0T abdominal scans to enable high acceleration (3.5×) with full-Fourier acquisitions by: 1) introducing wave encoding with self-refocusing gradient waveforms to improve acquisition efficiency; 2) developing self-calibrated estimation of wave-encoding point-spread function and coil sensitivity to improve motion robustness; and 3) incorporating a parallel imaging and compressed sensing reconstruction to reconstruct highly accelerated datasets. Image quality was compared pairwise with standard Cartesian acquisition independently and blindly by two radiologists on a scale from -2 to 2 for noise, contrast, confidence, sharpness, and artifacts. The average ratio of scan time between these two approaches was also compared. A Wilcoxon signed-rank tests with a P value under 0.05 considered statistically significant. Wave-encoded variable-density SSFSE significantly reduced the perceived noise level and improved the sharpness of the abdominal wall and the kidneys compared with standard acquisition (mean scores 0.8, 1.2, and 0.8, respectively, P variable-density sampling SSFSE achieves improved image quality with clinically relevant echo time and reduced scan time, thus providing a fast and robust approach for clinical SSFSE imaging. 1 Technical Efficacy: Stage 6 J. Magn. Reson. Imaging 2018;47:954-966. © 2017 International Society for Magnetic Resonance in Medicine.

The Role of Socio-Physical Anxiety, Body Image, and Self Esteem in Prediction of the Eating Disorder in Sportswomen

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Aidin Valizade

2012-03-01

Full Text Available Background: Socio-physical anxiety, body image, and self esteem are variables that play an important role on eating disorders. The purpose of this research was the role of socio-physical anxiety, body image and self esteem in prediction of the eating disorders in sportswomen.Materials and Method: 181 of aerobic and physical readiness sportswomen were selected by clustered sampling method and filled the questionnaire containing eating disorder, socio-physical anxiety, body image concern and self esteem scales. Results: According to this research, there was meaningful correlation between social physical anxiety (r=-0.326, body image concern (r=0.466 and self-esteem (r=0.349 with eating disorders and these variables were explained the 0.27 variance in eating disorders. Conclusion: Results are corresponding with previous studies and have important implications in attention to the predicting variables of eating disorders in athletes’ women

Influences on Adolescent African American Females' Global Self-Esteem: Body Image and Ethnic Identity

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Turnage, Barbara F.

2004-01-01

This study of 105 senior high school Southern African American adolescent females examined the relationship between global self-esteem, appearance evaluation (body image), and ethnic identity. As predicted, the relationship between global self-esteem, appearance evaluation (r = 0.46, p less than 0.001), and ethnic identity (r = 40, p less than…

Educational Responses to Media Challenges to Self Esteem: Body Image Perceptions among Undergraduate Students.

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Solomon, Mindy; Venuti, John; Hodges, Jilda; Iannuzzelli, Jena; Chambliss, Catherine

College students confront a variety of challenges on a daily basis. Living up to the standards prescribed by the media and other social groups leaves some students feeling distraught and many feeling vulnerable. Feelings of failure and self-loathing often lead college students to become preoccupied with their self-image and actions, motivating…

Sex and age differences in body-image, self-esteem, and body mass index in adolescents and adults after single-ventricle palliation.

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Pike, Nancy A; Evangelista, Lorraine S; Doering, Lynn V; Eastwood, Jo-Ann; Lewis, Alan B; Child, John S

2012-06-01

Single-ventricle congenital heart disease (SVCHD) requires multiple palliative surgical procedures that leave visible surgical scars and physical deficits, which can alter body-image and self-esteem. This study aimed to compare sex and age differences in body-image, self-esteem, and body mass index (BMI) in adolescents and adults with SVCHD after surgical palliation with those of a healthy control group. Using a comparative, cross-sectional design, 54 adolescent and adult (26 male and 28 female) patients, age 15–50 years, with SVCHD were compared with 66 age-matched healthy controls. Body-image and self-esteem were measured using the Multidimensional Body-Self Relations Questionnaire–Appearance Scale and Rosenberg Self-Esteem Scale. Height and weight were collected from retrospective chart review, and BMI was calculated. Female adolescents and adult patients with SVCHD reported lower body image compared with males patients with SVCHD and healthy controls (p = 0.003). Specific areas of concern were face (p = 0.002), upper torso or chest (p = 0.002), and muscle tone (p = 0.001). Patients with SVCHD who were \\21 years of age had lower body image compared with healthy controls (p = 0.006). Self-esteem was comparable for both patients with SVCHD and healthy peers. There were no sex differences in BMI; BMI was higher in subjects[21 years of age (p = 0.01). Despite the similarities observed in self-esteem between the two groups, female patients with SVCHD\\21 years of age reported lower perceived body-image. Our findings support the need to recognize poor psychological adjustment related to low self-esteem in patients with SVCHD; female patients warrant increased scrutiny. Strategies to help patients with SVCHD cope with nonmodifiable aspects of body-image during the difficult adolescent–to–young adult years may potentially enhance self-esteem and decrease psychological distress.

"Exercise to be fit, not skinny": The effect of fitspiration imagery on women's body image.

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Tiggemann, Marika; Zaccardo, Mia

2015-09-01

Fitspiration is an online trend designed to inspire viewers towards a healthier lifestyle by promoting exercise and healthy food. The present study aimed to experimentally investigate the impact of fitspiration images on women's body image. Participants were 130 female undergraduate students who were randomly assigned to view either a set of Instagram fitspiration images or a control set of travel images presented on an iPad. Results showed that acute exposure to fitspiration images led to increased negative mood and body dissatisfaction and decreased state appearance self-esteem relative to travel images. Importantly, regression analyses showed that the effects of image type were mediated by state appearance comparison. Thus it was concluded that fitspiration can have negative unintended consequences for body image. The results offer support to general sociocultural models of media effects on body image, and extend these to "new" media. Copyright © 2015 Elsevier Ltd. All rights reserved.

Self-generated visual imagery alters the mere exposure effect.

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Craver-Lemley, Catherine; Bornstein, Robert F

2006-12-01

To determine whether self-generated visual imagery alters liking ratings of merely exposed stimuli, 79 college students were repeatedly exposed to the ambiguous duck-rabbit figure. Half the participants were told to picture the image as a duck and half to picture it as a rabbit. When participants made liking ratings of both disambiguated versions of the figure, they rated the version consistent with earlier encoding more positively than the alternate version. Implications of these findings for theoretical models of the exposure effect are discussed.

Hubungan Body Image dan Self Esteem Terhadap Perilaku Diet pada Remaja Putri di SMA Santo Thomas 1 Medan

OpenAIRE

Ramos

2016-01-01

Adolescent often notice the weight and shape of their bodies. Media influence adolescent development that can change their perspective of body image. Media affects body image and self esteem that are formed in the adolescent mind. Public standards causes adolescents to have low self esteem and alter their normal body image. This can make adolescent go on diet which sometimes can lead to excessive dieting and eating behavior disorders. This study aims to determine the relationship between body...

What is the influence of self-image and perceived parenting role expectations on adolescent fathers' perceived role performance?

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Jones

2000-05-01

Background: "Adolescent pregnancy is one of the most pressing, persistent, and poignant problems facing society" (Yoos, 1987, p. 247). Manitoba's teen pregnancy rates are among the highest in Canada. Yet, little is known about adolescent fathers and their parenting involvement. The purpose of this descriptive correlational study was to explore variables which may influence teen fathers' participation in parenting.Methods: A convenience sample of 30 adolescent fathers, whose partners were attending an Adolescent Prenatal Clinic, completed two questionnaires: Offer Self-Image-Revised, and Perceived Parenting Role Performance. Guided by family role theory, four hypotheses were examined utilizing a quantitative research method.Results: Data analysis revealed that 30% of these respondents had a low to very low self-image. Pearson's correlation coefficient, which facilitated hypotheses testing, failed to validate a relationship between teen fathers' perceived role performance and self-image, and perceived parenting role expectations. Nevertheless, a moderate negative correlation was noted between teen fathers' self-image and their perceived parenting role expectations (r = -.35, p adolescence with the responsibilities of fatherhood increase their vulnerability to parenting failure.

The Moral Self-Image Scale: Measuring and Understanding the Malleability of the Moral Self

Directory of Open Access Journals (Sweden)

Jennifer eJordan

2015-12-01

Full Text Available Recent ethical decision-making models suggest that individuals’ own view of their morality is malleable rather than static, responding to their (immoral actions and reflections about the world around them. Yet no construct currently exists to represent the malleable state of a person’s moral self-image (MSI. In this investigation, we define this construct, as well as develop a scale to measure it. Across five studies, we show that feedback about the moral self alters an individual’s MSI as measured by our scale. We also find that MSI is related to, but distinct from, related constructs, including moral identity, self-esteem, and moral disengagement. In Study 1, we administered the MSI scale and several other relevant scales to demonstrate convergent and discriminant validity. In Study 2, we examine the relationship between the MSI and one’s ought versus ideal self. In Studies 3 and 4, we find that one’s MSI is affected in the predicted directions by manipulated feedback about the moral self, including feedback related to social comparisons of moral behavior (Study 3 and feedback relative to one’s own moral ideal (Study 4. Lastly, Study 5 provides evidence that the recall of one’s moral or immoral behavior alters people’s MSI in the predicted directions. Taken together, these studies suggest that the MSI is malleable and responds to individuals’ moral and immoral actions in the outside world. As such, the MSI is an important variable to consider in the study of moral and immoral behavior.

Factors related to depression and eating disorders: self-esteem, body image, and attractiveness.

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Grubb, H J; Sellers, M I; Waligroski, K

1993-06-01

To test hypotheses that women suffering from some form of eating disorder would experience lower self-esteem and higher depression and that women with lower self-esteem and greater depression would rate their attractiveness lower and see themselves as heavier than less depressed individuals, 42 college undergraduate women were individually administered the Eating Disorders Inventory, Beck Depression Inventory, Coopersmith Self-esteem Inventory, and a Body Image/Attractiveness Perception Scale. A Pearson correlation indicated a substantial relation between scores on depression and scores on eating disorders, but nonsignificant values between self-esteem scores and scores on either eating disorders or on depression. Depression scores correlated significantly with rated body size, but not attractiveness, while self-esteem scores were significantly correlated with rated attractiveness, not body size. These results contradict literature on the relation between self-esteem and depression. Directions for additional research are discussed.

Adolescent patients with eating disorders and their parents: a study of self-image and outcome at an intensive outpatient program.

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Gezelius, Christina; Wahlund, Björn; Carlsson, Lars; Wiberg, Britt

2016-12-01

The main aim of this clinical study was to explore how adolescent patients with eating disorders and their parents report their perceived self-image, using Structural Analysis of Social Behavior (SASB), before and after treatment at an intensive outpatient program. Another aim was to relate the self-image of the young patients to the outcome measures body mass index (BMI) and Children's Global Assessment Scale (C-GAS) score. A total of 93 individuals (32 adolescents, 34 mothers, and 27 fathers) completed the SASB self-report questionnaire before and after family-based treatment combined with an individual approach at a child and youth psychiatry day care unit. The patients were also assessed using the C-GAS, and their BMI was calculated. The self-image (SASB) of the adolescent patients was negative before treatment and changed to positive after treatment, especially regarding the clusters self-love (higher) and self-blame (lower). A positive correlation between change in self-love and in C-GAS score was found, which rose significantly. Increased self-love was an important factor, explaining a variance of 26 %. BMI also increased significantly, but without any correlation to change in SASB. The patients' fathers exhibited low on the cluster self-protection. Mothers' profiles were in line with a non-clinical group. Results indicate that the self-image of adolescent patients change from negative to positive alongside with a mainly positive outcome of the ED after treatment. Low self-protection according to SASB among fathers suggests the need for greater focus on their involvement.

Self-Consciousness and Body Image Issues Among College Females

OpenAIRE

Doty, Mary E.

1990-01-01

This study examined some of the procedures used in eating disorder research. Body size estimation procedures, in light of their similarity to procedures in social psychology, were used to create self-focus and selfconsciousness conditions. If the procedures in the present study create self-consciousness effects, it is possible that the results of those studies have been affected by a heightened state of self-awareness. The present research also explored the relationships between self-consciou...

The moderating impact of self-esteem on self-affirmation effects.

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Düring, Camilla; Jessop, Donna C

2015-05-01

This study explored whether self-esteem would moderate the effectiveness of a self-affirmation manipulation at increasing openness to personally relevant health-risk information. The study employed a prospective experimental design. Participants (N = 328) completed either a self-affirmation manipulation or a control task, prior to reading information detailing the health-related consequences of taking insufficient exercise. They then completed a series of measures assessing their cognitions towards exercise and their derogation of the information. Exercise behaviour was assessed at 1-week follow-up. Self-esteem moderated the impact of self-affirmation on the majority of outcomes. For participants with low self-esteem, the self-affirmation manipulation resulted in more positive attitudes and intentions towards exercise, together with lower levels of derogation of the health-risk information. By contrast, there was no effect of the self-affirmation manipulation on outcomes for participants with high self-esteem. Findings suggest that self-affirmation manipulations might be of particular benefit for those with low self-esteem in terms of promoting openness towards health-risk information. This is promising from a health promotion perspective, as individuals with low self-esteem often represent those most in need of intervention. Statement of contribution What is already known on this subject? Self-affirmation has been shown to result in more open processing of personally relevant health-risk information. Individuals low in self-esteem tend to process such information more defensively than those high in self-esteem. What does this study add? It explores whether self-esteem moderates the impact of self-affirmation on responses to health-risk information. Findings suggest that individuals with low self-esteem benefit most from the self-affirmation manipulation. This has important applied implications, as individuals with low self-esteem may be most in need of

THE EFFECTS OF GUIDED SYSTEMATIC AEROBIC DANCE PROGRAMME ON THE SELF-ESTEEM OF ADULTS

OpenAIRE

Tihanyi Hos, Agnes

2005-01-01

In our research we were seeking answers of the effects of guided, “age-needs specific,” systematic, group aerobic exercise programmes on the self-esteem and self-image of middle-aged women. Fifty three women (ages 48.6 + 5.1) took part in the study who had not participated in any systematic fitness training and worked in intellectual occupations. We formed two groups, i.e., the experimental (EG) and the control (CG) group. Members of the experimental group (n= 25) volunteered to participate i...

Genital Appearance Dissatisfaction: Implications for Women's Genital Image Self-Consciousness, Sexual Esteem, Sexual Satisfaction, and Sexual Risk.

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Schick, Vanessa R; Calabrese, Sarah K; Rima, Brandi N; Zucker, Alyssa N

2010-09-01

Findings regarding the link between body image and sexuality have been equivocal, possibly because of the insensitivity of many of body image measures to potential variability across sensory aspects of the body (e.g., appearance versus odor), individual body parts (e.g., genitalia versus thighs), and social settings (e.g., public versus intimate). The current study refined existing methods of evaluating women's body image in the context of sexuality by focusing upon two highly specified dimensions: satisfaction with the visual appearance of the genitalia and self-consciousness about the genitalia during a sexual encounter. Genital appearance dissatisfaction, genital image self-consciousness, and multiple facets of sexuality were examined with a sample of 217 undergraduate women using an online survey. Path analysis revealed that greater dissatisfaction with genital appearance was associated with higher genital image self-consciousness during physical intimacy, which, in turn, was associated with lower sexual esteem, sexual satisfaction, and motivation to avoid risky sexual behavior. These findings underscore the detrimental impact of negative genital perceptions on young women's sexual wellbeing, which is of particular concern given their vulnerability at this stage of sexual development as well as the high rates of sexually transmitted infections within this age group. Interventions that enhance satisfaction with the natural appearance of their genitalia could facilitate the development of a healthy sexual self-concept and provide long-term benefits in terms of sexual safety and satisfaction.

Prospective Cohort Study Investigating Changes in Body Image, Quality of Life, and Self-Esteem Following Minimally Invasive Cosmetic Procedures.

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Sobanko, Joseph F; Dai, Julia; Gelfand, Joel M; Sarwer, David B; Percec, Ivona

2018-04-13

Minimally invasive cosmetic injectable procedures are increasingly common. However, a few studies have investigated changes in psychosocial functioning following these treatments. To assess changes in body image, quality of life, and self-esteem following cosmetic injectable treatment with soft tissue fillers and neuromodulators. Open, prospective study of 75 patients undergoing cosmetic injectable procedures for facial aging to evaluate changes in psychosocial functioning within 6 weeks of treatment. Outcome measures included the Derriford appearance scale (DAS-24), body image quality of life inventory (BIQLI), and the Rosenberg self-esteem scale. Body image dissatisfaction, as assessed by the DAS-24, improved significantly 6 weeks after the treatment. Body image quality of life, as assessed by the BIQLI, improved, but the change did not reach statistical significance. Self-esteem was unchanged after the treatment. Minimally invasive cosmetic injectable procedures were associated with reductions in body image dissatisfaction. Future research, using recently developed cosmetic surgery-specific instruments, may provide further insight into the psychosocial benefits of minimally invasive procedures.

The Impact of Venous Leg Ulcers on Body Image and Self-esteem.

Science.gov (United States)

Salomé, Geraldo Magela; de Almeida, Sergio Aguinaldo; de Jesus Pereira, Maria Teresa; Massahud, Marcelo Renato; de Oliveira Moreira, Carmelita Naira; de Brito, Maria José Azevedo; Ferreira, Lydia Masako

2016-07-01

To evaluate self-esteem and body image in patients with venous leg ulcers (VLUs). A multicenter, prospective, descriptive, analytical, clinical study. A nursing care and education center of a university hospital, a health center, and an outpatient wound care clinic in Brazil. Fifty-nine consecutive adult patients with VLUs and Doppler ankle-brachial index ranging from 0.8 to 1.0 were recruited for the study. Exclusion criteria were mixed ulcers, arterial ulcers, and diabetic foot ulcers. A questionnaire assessing sociodemographic and clinical characteristics of patients, the Brazilian version of the Body Investment Scale, and the Rosenberg Self-esteem (RSE)/UNIFESP-EPM (São Paulo da Universidade Federal de São Paulo-Escola Paulista de Medicina) scale were administered to all patients. Most participants were women, aged between 60 and 70 years, and smokers; 33 (56%) were divorced, widowed, or single, and 26 (44%) were married. The patients had the ulcer for a mean of 5.42 years. Exudate and foul odor were present in most cases. Twenty-one ulcers (36%) measured 29 cm or less in surface area, and 17 (29%) ulcers measured between 30 and 49 cm (mean, 3.39 cm). The mean RSE score was 22.66, indicating low self-esteem. The mean Body Investment Scale total score was 27.49, and the scores on the body image and body touch subscales were also low, indicating negative feelings about the body. Patients with VLUs had low self-esteem and negative feelings about their bodies.

Self-citation rates among medical imaging journals and a possible association with impact factor

International Nuclear Information System (INIS)

Kurmis, Timothy P.; Kurmis, Andrew P.

2010-01-01

Purpose: Since conceptualisation in 1955, journal impact factors (IFs) have evolved as surrogate markers of perceived 'quality'. However, no previous research has explored the relationship between IF and journal self-citation rate, which may inflate this measure. Given Radiography's ongoing push to achieve Medline and ISI database inclusion, this paper aimed to quantitatively explore the frequency of self-citation and correlate this with ISI-reported IF. Methods: A review of articles published in two peer-reviewed, Medline and ISI-listed, imaging journals (Radiology and Academic Radiology), and Radiography, within in a 12-month period, was performed. The total number of citations and self-citations per article was recorded, and the results compared. Basic statistical and correlation analyses between listed IF ratings and self-citation indices were also performed. Results and Discussion: To our knowledge, this work represents the preliminary investigation exploring the association between ISI-listed IF and self-citation frequency. From the current results it can be suggested that such a relationship does exist, as demonstrated by the strongly positive correlation statistic (Pearson's r 2 = 0.99). Radiology was noted to have a considerably larger mean number of self-citations per article than the other two journals (p < 0.01), despite near-equivalent numbers of references per article. Conclusion: Our findings suggest that there may be relationship between an ISI-listed IFs and journal self-citation rates. It is hoped that this paper will be of interest in academic and research circles, both within medical imaging and more widely, and may provide impetus for discussion relating to self-citation frequency and influence on resultant IF calculations.

Honesty-humility in contemporary students: manipulations of self-image by inflated IQ estimations.

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Kajonius, P J

2014-08-01

The HEXACO model offers a complement to the Big Five model, including a sixth factor, Honesty-Humility, and its four facets (Sincerity, Fairness, Greed-avoidance, and Modesty). The four facets of Honesty-Humility and three indicators of intelligence (one performance-based cognitive ability test, one self-estimated academic potential, and one self-report of previous IQ test results) were assessed in students entering higher education (N = 187). A significant negative correlation was observed between Honesty-Humility and self-reported intelligence (r = -.37), most evident in the Modesty facet. These results may be interpreted as tendencies of exaggeration, using a theoretical frame of psychological image-management, concluding that the Honesty-Humility trait captures students' self-ambitions, particularly within the context of an individualistic, competitive culture such as Sweden.

Relationship between body mass index and women's body image, self-esteem and eating behaviours in pregnancy: a cross-cultural study.

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Shloim, Netalie; Hetherington, Marion M; Rudolf, Mary; Feltbower, Richard G

2015-04-01

This study examined the relationship between self-esteem, restrained eating, body image and body mass index during pregnancy. A total of 110 pregnant Israeli and UK women completed the Rosenberg Self-Esteem Questionnaire, the Dutch Eating Behaviour Questionnaire, scales to assess body image and demographics. Body mass index was calculated from antenatal records. Regression modelling determined the relationship between variables, countries and body mass index categories. High correlations were found between body image and body mass index with significantly higher body dissatisfaction for Israeli women. Self-esteem scores for pregnant women were similar to those reported for non-pregnant women. Poorer body image and higher prevalence of restrained eating were found in healthy weight Israeli women. © The Author(s) 2013.

Effects of self-pulsation on the spray characteristics of gas-liquid swirl coaxial injector

Science.gov (United States)

Kang, Zhongtao; Li, Qinglian; Cheng, Peng; Zhang, Xinqiao; Wang, Zhen-guo

2016-10-01

To understand the influence of self-pulsation on the spray characteristics of gas-liquid swirl coaxial injector, a back-lighting photography technique has been employed to capture the instantaneous self-pulsated spray and stable spray images with a high speed camera. The diameter and velocity of the droplets in the spray have been characterized with a Dantec Phase Doppler Anemometry (PDA) system. The effects of self-pulsation on the spray pattern, primary breakup, spray angle, diameter and velocity distribution and mass flow rate distribution are analyzed and discussed. The results show that the spray morphology is greatly influenced by self-pulsation. The stable spray has a cone shape, while the self-pulsated spray looks like a Christmas tree. The main difference of these two sprays is the primary breakup. The liquid film of stable spray keeps stable while that of self-pulsated spray oscillates periodically. The film width of self-pulsated spray varies in a large range with 'neck' and 'shoulder' features existing. The liquid film of self-pulsated spray breaks up at the second neck, and then the second shoulder begins to breakup into ligaments. The self-pulsated spray produces droplet clusters periodically, varies horizontal spray width and mass flux periodically. From the point of spatial distribution, self-pulsation is good for the spray, it uniformizes the mass flux along radius and increases the spray angle. However, when self-pulsation occurs, the SMD distribution varies from an inverted V shape to a hollow cone shape, and SMD increases at all the measuring points. Namely, from the point of atomization performance, self-pulsation has negative effects even when the breakup length is smaller. The effects of self-pulsation on the diameter and velocity distributions of the spray are mainly in the center part of the spray. The periphery of stable and self-pulsated spray has similar diameter and velocity distribution.

Psychological attitude to self-appraisal of stoma patients: prospective observation of stoma duration effect to self-appraisal

Science.gov (United States)

Hong, Kyung Sook; Oh, Bo-Young; Kim, Eui-Jung; Chung, Soon Sup; Kim, Kwang Ho

2014-01-01

Purpose In recent years, many psychological problems in patients with stomas have been addressed in a number of studies. But there are only a few studies that use objective measures to take into account self-appraisal by patients with permanent or temporary stomas. The aim of this study is to compare the psychological attitude of patients with permanent and temporary stomas and to determine the most appropriate psychological supportive care. Methods Sixty-five patients, who received a stoma between January 2009 and March 2012, were classified into two groups with either permanent or temporary stomas and were observed prospectively. We developed a questionnaire with the aid of a psychiatrist to analyze the grade of psychological attitude of self-appraisal of patients. The questionnaire was categorized into three parts; body image scale, self-esteem scale, and depression scale. Patients responded to the questionnaire 4 weeks after the operation and the answers of each group were compared. Results Out of 65 patients, 42 received temporary stomas and 23 received permanent stomas. There was no significant mean difference between permanent and temporary stoma patients in the body image scale, the self-esteem scale, and the depression scale. However, patients with a permanent stoma tended to have a worse body image and lower self-esteem on some specific items within the questionnaires. Conclusion Patients with stomas have negative attitudes toward themselves and some meaningful differences were found between different types of stoma applied. Surgeons should be concerned about postoperative psychological support for patients with stomas. PMID:24761424

Bioorthogonal cyclization-mediated in situ self-assembly of small-molecule probes for imaging caspase activity in vivo

Science.gov (United States)

Ye, Deju; Shuhendler, Adam J.; Cui, Lina; Tong, Ling; Tee, Sui Seng; Tikhomirov, Grigory; Felsher, Dean W.; Rao, Jianghong

2014-06-01

Directed self-assembly of small molecules in living systems could enable a myriad of applications in biology and medicine, and already this has been used widely to synthesize supramolecules and nano/microstructures in solution and in living cells. However, controlling the self-assembly of synthetic small molecules in living animals is challenging because of the complex and dynamic in vivo physiological environment. Here we employ an optimized first-order bioorthogonal cyclization reaction to control the self-assembly of a fluorescent small molecule, and demonstrate its in vivo applicability by imaging caspase-3/7 activity in human tumour xenograft mouse models of chemotherapy. The fluorescent nanoparticles assembled in situ were imaged successfully in both apoptotic cells and tumour tissues using three-dimensional structured illumination microscopy. This strategy combines the advantages offered by small molecules with those of nanomaterials and should find widespread use for non-invasive imaging of enzyme activity in vivo.

In vivo self-bio-imaging of tumors through in situ biosynthesized fluorescent gold nanoclusters

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Wang, Jianling; Zhang, Gen; Li, Qiwei; Jiang, Hui; Liu, Chongyang; Amatore, Christian; Wang, Xuemei

2013-01-01

Fluorescence imaging in vivo allows non-invasive tumor diagnostic thus permitting a direct monitoring of cancer therapies progresses. It is established herein that fluorescent gold nanoclusters are spontaneously biosynthesized by cancerous cell (i.e., HepG2, human hepatocarcinoma cell line; K562, leukemia cell line) incubated with micromolar chloroauric acid solutions, a biocompatible molecular Au(III) species. Gold nanoparticles form by Au(III) reduction inside cells cytoplasms and ultimately concentrate around their nucleoli, thus affording precise cell imaging. Importantly, this does not occur in non-cancerous cells, as evidenced with human embryo liver cells (L02) used as controls. This dichotomy is exploited for a new strategy for in vivo self-bio-imaging of tumors. Subcutaneous injections of millimolar chloroauric acid solution near xenograft tumors of the nude mouse model of hepatocellular carcinoma or chronic myeloid leukemia led to efficient biosynthesis of fluorescent gold nanoclusters without significant dissemination to the surrounding normal tissues, hence allowing specific fluorescent self-bio-marking of the tumors.

The mediating effect of self-esteem, depression and anxiety between satisfaction with body appearance and problematic internet use.

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Koronczai, Beatrix; Kökönyei, Gyöngyi; Urbán, Róbert; Kun, Bernadette; Pápay, Orsolya; Nagygyörgy, Katalin; Griffiths, Mark D; Demetrovics, Zsolt

2013-07-01

Given that dissatisfaction with bodily appearance can sometimes lead to the avoidance of personal contacts and the increase of internet use, this study examines this relationship. The direct role of dissatisfaction with bodily appearance along with the possible mediation effects of depression, anxiety and self-esteem were tested. A total of 694 participants completed an online questionnaire (58.5% male, mean age 21.5 years), containing measures on problematic internet use, depression and anxiety symptoms, self-esteem and satisfaction with body image. Path analyses were used to test direct and indirect effects. Satisfaction with body appearance had a significant negative direct effect on problematic internet use among both sexes. Though, satisfaction with body appearance had a positive effect on self-esteem and negative on anxiety, neither self-esteem nor anxiety had a direct significant effect on problematic internet use. The effect of dissatisfaction with body appearance was mediated via the self-esteem-depression path toward problematic internet use. Dissatisfaction with physical appearance seems to have a significant role in individuals' immersing themselves in internet use.

Pilot trial of a parenting and self-care intervention for HIV-positive mothers: the IMAGE program.

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Murphy, Debra A; Armistead, Lisa; Payne, Diana L; Marelich, William D; Herbeck, Diane M

2017-01-01

A pilot study was conducted to assess the effects of the IMAGE pilot intervention (Improving Mothers' parenting Abilities, Growth, and Effectiveness) on mothers living with HIV (MLH). Based on Fisher and Fisher's IMB model [1992. Changing AIDS risk behavior. Psychological Bulletin, 111, 455-474], the intervention focused on self-care and parenting behavior skills of MLH that affect maternal, child, and family outcomes. A randomized pre-test-post-test two-group design with repeated assessments was used. MLH (n = 62) and their children aged 6-14 (n = 62; total N = 124) were recruited for the trial and randomized to the theory-based skills training condition or a standard care control condition. Assessments were conducted at baseline with follow-ups at 3, 6, and 12 months. Maternal, child, and family outcomes were assessed. Results show significant effects of the intervention for improving parenting practices for mothers. The intervention also improved family outcomes, and showed improvements in the parent-child relationship. IMAGE had a positive impact on parenting behaviors, and on maternal, child, and family outcomes. Given MLH can be challenged by their illness and also live in under-resourced environments, IMAGE may be viewed as a viable way to improve quality of life and family outcomes.

Strengthening physical self-perceptions through exercise.

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Caruso, C M; Gill, D L

1992-12-01

Two studies examined the effects of physical activity/exercise on physical self-perceptions, self-efficacy, body satisfaction, fitness and relationships among these variables. In study 1, 34 female undergraduates participated in a 10-week exercise/activity program. Participants were selected from existing classes forming a weight training, aerobic exercise and activity control group. Results revealed changes in physical self-perceptions, strength, and body composition over the 10-weeks. Improvements in physical self-perceptions and fitness occurred independent of exercise/activity group. Groups differed in the perceived importance attached to physical self-perceptions. Correlations among the measures revealed relationships among physical self-perceptions, body satisfaction, global self-esteem, and fitness. In study 2, we hypothesized that weight training would have a greater effect on physical self-perceptions and body image perceptions than physical education activity classes. Thirty-seven males and 28 females were selected from existing classes forming a weight training and activity group. Results revealed no significant changes in physical self-perceptions, body image, or global self-esteem over the 10-week program, while strength and physical self-efficacy improved. Correlations among measures from both studies offer preliminary support for Sonstroem and Morgan's model for the examination of self-esteem in exercise settings.

Positive effect of pedometer-based walking intervention on body image and physical activity enjoyment in adolescent girls

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Kantanista Adam

2017-02-01

Full Text Available Study aim: To assess the effects of an eight-week pedometer-based walking intervention, using different strategies of goalsetting, on self-efficacy, physical activity enjoyment, and body image.

Increased self-diffusion of brain water in hydrocephalus measured by MR imaging

DEFF Research Database (Denmark)

Gideon, P; Thomsen, C; Gjerris, F

1994-01-01

We used MR imaging to measure the apparent brain water self-diffusion in 5 patients with normal pressure hydrocephalus (NPH), in 2 patients with high pressure hydrocephalus (HPH), and in 8 age-matched controls. In all patients with NPH significant elevations of the apparent diffusion coefficients...... white matter, and in one patient reexamined one year after surgery, ADCs were unchanged in nearly all brain regions. The increased ADC values in hydrocephalus patients may be caused by factors such as changes in myelin-associated bound water, increased Virchow-Robin spaces, and increased extracellular...... brain water fraction. For further studies of brain water diffusion in hydrocephalus patients, echo-planar imaging techniques with imaging times of a few seconds may be valuable....

Eating behaviour, body image, and self-esteem of adolescent girls in Malaysia.

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Soo, Kah Leng; Shariff, Zalilah Mohd; Taib, Mohd Nasir Mohd; Samah, Bahaman Abu

2008-06-01

This cross-sectional study was undertaken with 489 secondary school girls, ages 15-17 years, to examine disordered eating behaviours of adolescent girls in Malaysia and to estimate associations with body weight, body-size discrepancy, and self-esteem. Dietary restraint, binge eating, body image, and self-esteem were assessed using the Restrained Eating scale of the Dutch Eating Behaviour Questionnaire, the Binge Scale Questionnaire, the Contour Drawing Rating Scale, and the Rosenberg Self-Esteem Scale, respectively. Pearson correlations estimated associations between variables. There were 3.1% underweight, 9.8% at risk of being overweight, and 8.6% overweight girls. A total of 87.3% were dissatisfied with their own body size. Dietary restraint and binge eating were reported by 36.0% and 35.4%, respectively. Body Mass Index (r = .34, p self-esteem (r = -.20, p < .001) was significantly associated only with binge eating.

Early Childhood Pre-Service Teachers' Self-Images of Science Teaching in Constructivism Science Education Courses

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Go, Youngmi; Kang, Jinju

2015-01-01

The purpose of this study is two-fold. First, it investigates the self-images of science teaching held by early childhood pre-service teachers who took constructivism early childhood science education courses. Second, it analyzes what aspects of those courses influenced these images. The participants were eight pre-service teachers who took these…

Gender and Age Patterns in Emotional Expression, Body Image, and Self-Esteem: A Qualitative Analysis.

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Polce-Lynch, Mary; Myers, Barbara J.; Kilmartin, Christopher T.; Forssmann-Falck, Renate; Kliewer, Wendy

1998-01-01

Used written narratives to examine gender and age patterns in body image, emotional expression, and self-esteem for 209 students in grades 5, 8, and 12. Results indicate that boys restrict emotional expression in adolescence, whereas girls increase emotional expression in the same period. Girls also are more influenced by body image. (SLD)

Effect of blast furnace slag on self-healing of microcracks in cementitious materials

International Nuclear Information System (INIS)

Huang, Haoliang; Ye, Guang; Damidot, Denis

2014-01-01

The physico-chemical process of self-healing in blast furnace slag cement paste was investigated in this paper. With a high slag content i.e., 66% in cement paste and saturated Ca(OH) 2 solution as activator, it was found that the reaction products formed in cracks are composed of C-S-H, ettringite, hydrogarnet and OH–hydrotalcite. The fraction of C-S-H in the reaction products is much larger than the other minerals. Large amount of ettringite formed in cracks indicates the leaching of SO 4 2− ions from the bulk paste and consequently the recrystallization. Self-healing proceeds fast within 50 h and then slows down. According to thermodynamic modeling, when the newly formed reaction products are carbonated, the filling fraction of crack increases first and then decreases. Low soluble minerals such as silica gel, gibbsite and calcite are formed. Compared to Portland cement paste, the potential of self-healing in slag cement paste is higher when the percentage of slag is high. - Highlights: • Self-healing reaction products in slag cement paste were characterized. • Self-healing reaction products formed in time were quantified with image analysis. • Self-healing in slag cement paste was simulated with a reactive transport model. • Effect of carbonation on self-healing was investigated by thermodynamic modeling. • Effect of slag on self-healing was discussed based on experiments and simulation

Thinking big: the effect of sexually objectifying music videos on bodily self-perception in young women.

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Mischner, Isabelle H S; van Schie, Hein T; Wigboldus, Daniël H J; van Baaren, Rick B; Engels, Rutger C M E

2013-01-01

The present study investigated the effect of sexually objectifying music video exposure on young women's implicit bodily self-perception and the moderating role of self-esteem. Fifty-six college women of normal weight were either exposed to three sexually objectifying music videos or three neutral music videos. Perceived and ideal body size were measured both before and after video exposure, using horizontally stretched and compressed photographs of the participant's own body in swimming garment. As expected, only women low (but not high) in self-esteem were negatively affected by the sexually objectifying content of the music videos: they perceived themselves as bigger and showed an increased discrepancy between their perceived and ideal body size after video exposure. The neutral music videos did not influence women's bodily self-perceptions. These findings suggest that body image is a flexible construct, and that high self-esteem can protect women against the adverse effects of sexually objectifying media. Copyright © 2012 Elsevier Ltd. All rights reserved.

Dietary behaviors and body image recognition of college students according to the self-rated health condition.

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Kim, Mi Joung; Lim, Ye Rom; Kwak, Ho Kyung

2008-01-01

This study was done to investigate the relationship between the perception of body image, body weight satisfaction or dietary behavior and self-rated health status in Korean college students. Subjects, 285 college students, were divided into three groups (healthy, normal, and unhealthy) according to the answer for the self-rated health question. Information about demographic status, self-rated health condition, height and weight, perception of body image, satisfaction of body weight, concern for body weight control, dietary behavior, nutritional knowledge, and health-related characteristics collected by a self-reported questionnaire. The proportion of men and women in each group was not significantly different. The academic year, major, experience of nutritional education, and type of residence were not significantly related with self-rated health but the pocket money range was significantly associated (ppocket money range and was increased in less than 210 thousand won or over 300 thousand won pocket money ranges. There were no significant differences for age, height, weight and BMI between the groups. The body image perception and body weight satisfaction levels of healthy group was significantly higher than those of unhealthy group (p<0.01 and p<0.001, respectively), but the level of concern for body weight control in healthy subjects was significantly lower than that in unhealthy subjects (p<0.05). The proportion of subjects reported as healthy was significantly increased with increased frequencies of following food behaviors; weekly use of protein foods (p<0.01), vegetables (p<0.05) and dairy products (p<0.01), and food habits such as "regularity of meal time" (p<0.01), "eating in moderation" (p<0.05), and "eating breakfast" (p<0.001). Overall results suggested that the college students have tended to have a better perception of health when they have better body image perception, body weight satisfaction and dietary behaviors.

Development of self-image and its components during a one-year follow-up in non-referred adolescents with excess and normal weight.

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Mäkinen, Mauno; Marttunen, Mauri; Komulainen, Erkki; Terevnikov, Viacheslav; Puukko-Viertomies, Leena-Riitta; Aalberg, Veikko; Lindberg, Nina

2015-01-01

The proportion of overweight and obese youths is high. The present study aimed to investigate the development of self-image and its components during a one-year follow-up among non-referred adolescents with excess and normal weight. Furthermore, we separately analyzed the data for girls and boys. Altogether 86 8(th) grades (41 girls and 45 boys) with a relative weight of 26% or more above the median and 91 controls (43 girls and 48 boys) with normal weight participated the follow-up. The Offer Self-Image Questionnaire, Revised (OSIQ-R) was used to assess self-image at baseline and on follow-up. In the OSIQ-R, a low total raw score implies positive adjustment, while a high raw score implies poor adjustment and a negative self-image. The study design was doubly correlated (pairs and time), and a linear mixed model was used in the statistical analysis. In OSIQ-R total scores, a comparative improvement was observed in girls with normal weight. Among these girls, significant change scores compared to zero were seen in impulse control, social functioning, vocational attitudes, self-confidence, self-reliance, body image, sexuality, and ethical values. In girls with excess weight, none of the change scores compared to zero were statistically significant. When the girls with normal and excess weight were compared, the difference in change scores was largest in sexuality and vocational attitudes. Change scores compared to zero were significant in sexuality and idealism for boys with excess weight, and in impulse control, mental health, self-reliance, and sexuality for normal weight boys. When the boys with excess and normal weight were compared, no statistically significant differences emerged in change scores. In mid-adolescent girls, the influence of overweight and obesity on the development of self-image is substantial. Weight management programs directed at overweight adolescent girls should include psychological interventions aiming to diminish self-image distress

Overweight, Thinness, Body Self-Image and Eating Strategies of 2,121 Italian Teenagers.

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Roberta Guarino

2005-01-01

Full Text Available This study describes the prevalence rate of overweight and thinness in a population of teens living in two different areas of Italy and explores the body self-image perception and unhealthy eating behaviours and strategies to lose weight. A questionnaire was administered to a sample of 2,121 teenage students (1,084 males; 1,037 females. Results showed that teen females and males build and perceive their body images in very different ways. Most of the overall sample perceived their weight as normal, while a relevant 31.6% defined themselves as overweight and another 4.4% as heavily overweight. Analysis based on BMI (calculated through self-referred weight and height showed that only 9.2% of our sample could be considered overweight and 1,7% obese. Most of female teen students (485 out of 1,037 were trying to lose weight, demonstrating that strategies to lose weight were undertaken also by girls perceiving themsleves as normal in relation to body weight; 46.8% girls were using strategies to lose weight compared with 21.9% boys. These strategies included very problematic behaviours like self-induced vomiting (3.3% F vs. 1.7% M and dieting pills (2.8% F vs. 1.5% M undertaken along with more usual thinning strategies like dieting and exercising. Girls were more prone than boys to exercise as a way to lose weight (41% vs. 31.7%. This study showed that there is a deep gap between actual weight and perceived body-image and weight. This study is one of the first of this kind in Italy and calls for primary prevention and health education programs aimed at improving teen body-image as a strategy to reduce the eating disorder epidemics spreading among young people.

Cross-Cultural Adaptation of the Male Genital Self-Image Scale in Iranian Men

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Mohsen Saffari

2016-03-01

Conclusion: The MGSIS-I is a useful instrument to assess genital self-image in Iranian men, a concept that has been associated with sexual function. Further investigation is needed to identify the applicability of the scale in other cultures or populations.

Unpacking religious affiliation: Exploring associations between Christian children's religious cultural context, God image, and self-esteem across development.

Science.gov (United States)

Smith, Erin I; Crosby, Robert G

2017-03-01

In developmental research, religiousness is typically measured with omnibus affiliation or attendance variables that underspecify how the religious cultural contexts and experiences that affiliation represents influence developmental outcomes. This study explores associations between five aspects of a religious cultural context (family religiosity, religious schooling, church-based relationships with peers and adults, and view of God) in 844 seven- to 12-year-old Christian children to examine how they differentially predict self-esteem. Results of a structural equation model (SEM) analysis indicated that God image and peer church relationships directly predicted self-esteem, whereas God image mediated the influence of adult church relationships and family religious practices on self-esteem. A multiple group SEM analysis met the criterion for weak, but not strong, evidence that self-esteem is more related to younger children's adult church relationships but older children's peer church relationships. God image tended to be more related to younger children's family religious practices but older children's adult church relationships. Implications for developmental researchers and practitioners are discussed. Statement of contribution What is already known on this subject? Religious affiliation is an omnibus variable representing multiple contexts of development. Self-esteem is an important outcome variable with different influences across development. Religious affiliation is associated with increased self-esteem. What does this study add? Children's experience in the contexts of religious affiliation influences development differently. It is not just affiliation, but specific religious contexts that influence children's self-esteem. The role of religious contexts in shaping children's self-esteem shifts across development. © 2016 The British Psychological Society.

Self image and place of control

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Marica Mircea Adrian

2017-05-01

Full Text Available The problematic of the self has a long history, being analyzed in the space of philosophical rationality since the Greek antiquity, being directed by the Socratic imperative of self-knowledge. Together with the establishment and development of social psychology, the last century, the researches on self-meet a special amplification. In the last decades, the thematic of self and its dimensions met a remarkable effervescent theoretics. The psychological researches extended on self-consciousness, self-esteem, self-handicapping, self-efficacy, self-improvement, self-enhancement, self-monitoring, self-focusing, self-disclosure, self-verification, etc. Our research aims to investigate the correlations that exist between the self-esteem and place of control, having in view certain variables such as age, sex, the level of studies graduated. The results obtained confirm in a great extent other researches mentioned in the paper.

Self-noise suppression schemes in blind image steganography

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Ramkumar, Mahalingam; Akansu, Ali N.

1999-11-01

Blind or oblivious data hiding, can be considered as a signaling method where the origin of the signal constellation is not known. The origin however, can be estimated, by means of self-noise suppression techniques. In this paper, we propose such a technique, and present both theoretical and numerical evaluations of its performance in an additive noise scenario. The problem of optimal choice of the parameters of the proposed technique is also explored, and solutions are presented. Though the cover object is assumed to be an image for purposes of illustration, the proposed method is equally applicable for other types of multimedia data, like video, speech or music.

Body image satisfaction and self-esteem status among the patients with polycystic ovary syndrome.

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Bazarganipour, Fatemeh; Ziaei, Saeide; Montazeri, Ali; Foroozanfard, Fatemeh; Kazemnejad, Anoshirvan; Faghihzadeh, Soghrat

2013-10-01

Most previous research has focused on polycystic ovary syndrome (PCOS) characteristics and their association with psychological disorders, such as anxiety and depression. In the present study, our aim was to study whether PCOS characteristics are associated with several aspects of psychological well-being namely self-esteem and body satisfaction. This was a cross-sectional study of 300 women with PCOS that was carried out in Kashan, Iran. Main outcome measures were the Body Image Concern Inventory (BICI) and the Rosenberg's Self-Esteem Scale and clinical information of PCOS. Major clinical PCOS features including obesity (BMI), excessive body hair (hirsutism score), acne, menstrual cycle disturbances and infertility. The findings of regression analysis indicated that infertile women had lower levels of self-esteem (=-0.11, p=0.049) and poorer body satisfaction (=0.121, p=0.036) compared with PCOS women without infertility. Furthermore, hirsute women experienced poorer self-esteem than women without hirsutism (=-0.124, p=0.032). Women with menstrual irregularities had higher body dissatisfaction (=0.159, p=0.005). Moreover, women with higher body mass index scores had poorer body satisfaction (=0.151, p=0.009) but were not associated with self-esteem. The emotional well-being of the patients presenting with the syndrome needs to be recognized more fully, particularly in relation to the low self-esteem, poor body image, and struggles with weight, menstrual irregularities, hirsutism and infertility. The results of this study raise implications for clinical practice and suggest that a multidisciplinary approach to the management of women with PCOS. This article extracted from Ph.D. thesis. (Fatemeh Bazarganipour).

Differences in the Pattern of Hemodynamic Response to Self-Face and Stranger-Face Images in Adolescents with Anorexia Nervosa: A Near-Infrared Spectroscopic Study.

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Takeshi Inoue

Full Text Available There have been no reports concerning the self-face perception in patients with anorexia nervosa (AN. The purpose of this study was to compare the neuronal correlates of viewing self-face images (i.e. images of familiar face and stranger-face images (i.e. images of an unfamiliar face in female adolescents with and without AN. We used near-infrared spectroscopy (NIRS to measure hemodynamic responses while the participants viewed full-color photographs of self-face and stranger-face. Fifteen females with AN (mean age, 13.8 years and 15 age- and intelligence quotient (IQ-matched female controls without AN (mean age, 13.1 years participated in the study. The responses to photographs were compared with the baseline activation (response to white uniform blank. In the AN group, the concentration of oxygenated hemoglobin (oxy-Hb significantly increased in the right temporal area during the presentation of both the self-face and stranger-face images compared with the baseline level. In contrast, in the control group, the concentration of oxy-Hb significantly increased in the right temporal area only during the presentation of the self-face image. To our knowledge the present study is the first report to assess brain activities during self-face and stranger-face perception among female adolescents with AN. There were different patterns of brain activation in response to the sight of the self-face and stranger-face images in female adolescents with AN and controls.

Differences in the Pattern of Hemodynamic Response to Self-Face and Stranger-Face Images in Adolescents with Anorexia Nervosa: A Near-Infrared Spectroscopic Study.

Science.gov (United States)

Inoue, Takeshi; Sakuta, Yuiko; Shimamura, Keiichi; Ichikawa, Hiroko; Kobayashi, Megumi; Otani, Ryoko; Yamaguchi, Masami K; Kanazawa, So; Kakigi, Ryusuke; Sakuta, Ryoichi

2015-01-01

There have been no reports concerning the self-face perception in patients with anorexia nervosa (AN). The purpose of this study was to compare the neuronal correlates of viewing self-face images (i.e. images of familiar face) and stranger-face images (i.e. images of an unfamiliar face) in female adolescents with and without AN. We used near-infrared spectroscopy (NIRS) to measure hemodynamic responses while the participants viewed full-color photographs of self-face and stranger-face. Fifteen females with AN (mean age, 13.8 years) and 15 age- and intelligence quotient (IQ)-matched female controls without AN (mean age, 13.1 years) participated in the study. The responses to photographs were compared with the baseline activation (response to white uniform blank). In the AN group, the concentration of oxygenated hemoglobin (oxy-Hb) significantly increased in the right temporal area during the presentation of both the self-face and stranger-face images compared with the baseline level. In contrast, in the control group, the concentration of oxy-Hb significantly increased in the right temporal area only during the presentation of the self-face image. To our knowledge the present study is the first report to assess brain activities during self-face and stranger-face perception among female adolescents with AN. There were different patterns of brain activation in response to the sight of the self-face and stranger-face images in female adolescents with AN and controls.

Cognitive self-affirmation inclination : An individual difference in dealing with self-threats

NARCIS (Netherlands)

Pietersma, Suzanne; Dijkstra, Arie

The current research shows that people differ in their inclination to use positive self-images when their self is threatened (i.e., cognitive self-affirmation inclination, CSAI). Just as self-affirmation manipulations do, the use of positive self-images induces open mindedness towards threatening

Segmentation of color images by chromaticity features using self-organizing maps

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Farid García-Lamont

2016-05-01

Full Text Available Usually, the segmentation of color images is performed using cluster-based methods and the RGB space to represent the colors. The drawback with these methods is the a priori knowledge of the number of groups, or colors, in the image; besides, the RGB space issensitive to the intensity of the colors. Humans can identify different sections within a scene by the chromaticity of its colors of, as this is the feature humans employ to tell them apart. In this paper, we propose to emulate the human perception of color by training a self-organizing map (SOM with samples of chromaticity of different colors. The image to process is mapped to the HSV space because in this space the chromaticity is decoupled from the intensity, while in the RGB space this is not possible. Our proposal does not require knowing a priori the number of colors within a scene, and non-uniform illumination does not significantly affect the image segmentation. We present experimental results using some images from the Berkeley segmentation database by employing SOMs with different sizes, which are segmented successfully using only chromaticity features.

Gait Recognition Using Image Self-Similarity

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Chiraz BenAbdelkader

2004-04-01

Full Text Available Gait is one of the few biometrics that can be measured at a distance, and is hence useful for passive surveillance as well as biometric applications. Gait recognition research is still at its infancy, however, and we have yet to solve the fundamental issue of finding gait features which at once have sufficient discrimination power and can be extracted robustly and accurately from low-resolution video. This paper describes a novel gait recognition technique based on the image self-similarity of a walking person. We contend that the similarity plot encodes a projection of gait dynamics. It is also correspondence-free, robust to segmentation noise, and works well with low-resolution video. The method is tested on multiple data sets of varying sizes and degrees of difficulty. Performance is best for fronto-parallel viewpoints, whereby a recognition rate of 98% is achieved for a data set of 6 people, and 70% for a data set of 54 people.

Individual Differences in the Self-Image of Adolescents with Learning Disabilities: The Roles of Severity, Time of Diagnosis, and Parental Perceptions.

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Raviv, Dorit; Stone, C. Addison

1991-01-01

This study found that 49 adolescents with learning disabilities (LD) scored lower than 49 normally achieving peers on a self-image questionnaire. Later-diagnosed adolescents with LD scored higher than early diagnosed adolescents. LD severity was not related to self-image. Moderate relationships were found between parents' perceptions and…

The effect of leukemia and its treatment on self-esteem of school-age children.

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Mullis, R L; Mullis, A K; Kerchoff, N F

1992-01-01

The purpose of this research was to investigate the self-esteem of school-age children with leukemia in a clinic setting and to compare it to the self-esteem of healthy children. Thirteen chronically ill children, 6 to 11 years old, who were patients at a midwestern clinic and children's hospital, and 50 school-age children without chronic illness participated in the study. Children were administered the Kinetic Family Drawing-Revised (Spinetta, McLaren, Fox, & Sparta, 1981) to measure their self-image in relation to their family. Children's self-esteem was measured by the Coopersmith Self-Esteem Inventory (SEI) (Coopersmith, 1981). The results indicated that children with leukemia did not differ in self-esteem from healthy children except on one subscale of the SEI. However, children with and without leukemia did differ on components of the self-image measure, a dimension of self-esteem. Implications of the findings are discussed.

The antidepressant effects of physical activity: mediating self-esteem and self-efficacy mechanisms.

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Ryan, Michael P

2008-01-01

The investigation of physiological mechanisms responsible for the antidepressant effects of physical activity has been hampered by the failure to control adequately for psychosocial effects and the failure to control for participant expectancies concerning exercise outcomes. This retrospective, cross-sectional study of 188 male and 193 female undergraduates used structural regression modeling to assess the adequacy of the revised version of the Exercise and Self-Esteem Model (EXSEM; Sonstroem, R. J., Harlow, L. L., & Josephs, L. (1994). Exercise and self-esteem: Validity of model expansion and exercise associations. Journal of Sport & Exercise Psychology, 16, 29-42), a modified version of that model, and an Exercise Self-Esteem and Efficacy Model (EXSEEM). Direct effects of physical activity on depressive symptomatology (SCL90R-D; Derogatis, L. R. (1994). SCL-90-R: Administration, scoring, and procedures manual-II for the revised version (2nd ed.). Towson, MD: Clinical Psychometric Research) were obtained using a disguised-measures procedure to minimize expectancy artifacts. However, direct activity effects were negligible when activity-based esteem and efficacy effects were added to the structural regression model. Eliminating direct physical-activity effects did not reduce the quality of fit of the EXSEEM model nor the variance accounted for in SCL90R-D scores. Direct effects of physical-self esteem, but not global self-esteem, on SCL90R-D scores were found for females. Conversely, direct effects of global self-esteem, but not physical self-esteem, on SCL90R-D scores were found for males. Supplementary analyses indicated that scheduling efficacy for aerobic exercise had a direct effect on SCL90R-D scores for males and females, but task efficacy had direct effects only on perceived endurance for both males and females. These findings are consistent with the proposed EXSEEM model and imply that independent self-esteem and self-efficacy mechanisms are sufficient to

PARENTAL ROLE AND NARCISSICM IN CONSTRUCTING SELF-IMAGE IN JOICE CAROL OATES’S SHORT STORY

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Yustin Sartika

2017-07-01

Full Text Available POLA ASUH DAN NARSISME DALAM MENGKONSTRUKSI GAMBARAN DIRI DI CERITA JOICE CAROL OATES Abstract This research attempts to find the parental role and narcissism in constructing self-image in Where Are You Going Where Have You Been by Joice Carol Oates. This research was qualitative. By using object relation theory, this research finds that less attachment and abandonment leads to depression. To avoid further rejection, self can split to different personalities. Unpleasant experience during maturing process produces low self-esteem. Narcissism works to soothe the anxiety on developing the self-image. Keywords: abandonment, depression, split personality Abstrak Penelitian ini bertujuan untuk menemukan pola asuh orang tua dan narsisme dalam membangun gambaran diri dalam Where Are You Going Where Have You Been karya Joice Carol Oates. Penelitian ini merupakan penelitian kualitatif. Dengan menggunakan teori hubungan objek, penelitian ini menemukan bahwa kurangnya kedekatan dan rasa penolakan memunculkan depresi. Untuk mencegah penolakan lebih lanjut, diri dapat terbagi menjadi karakter yang berbeda-beda. Pengalaman pendewasaan yang tidak menyenangkan dapat menyebabkan anak memiliki rasa penghargaan diri yang rendah. Narsisme bekerja untuk meredakan kegelisahan dalam mengembangkan diri. Kata kunci: penolakan, depresi, karakter ganda

Adolescent Attitudes Toward Body Image and Anorexic Behavior.

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Grant, Carol Lee; Fodor, Iris Goldstein

1986-01-01

Explored the relationship between anorexic behavior and selected dimensions of body image predictor variables, selected dimensions of body image, physical attractiveness, self-esteem, and physical effectiveness). Results indicated that the dimension of self-esteem was the major factor in the prediction of anorexic behaviors as measured by the…

Mirror self-face perception in individuals with schizophrenia: Feelings of strangeness associated with one's own image.

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Bortolon, Catherine; Capdevielle, Delphine; Altman, Rosalie; Macgregor, Alexandra; Attal, Jérôme; Raffard, Stéphane

2017-07-01

Self-face recognition is crucial for sense of identity and for maintaining a coherent sense of self. Most of our daily life experiences with the image of our own face happen when we look at ourselves in the mirror. However, to date, mirror self-perception in schizophrenia has received little attention despite evidence that face recognition deficits and self abnormalities have been described in schizophrenia. Thus, this study aims to investigate mirror self-face perception in schizophrenia patients and its correlation with clinical symptoms. Twenty-four schizophrenia patients and twenty-five healthy controls were explicitly requested to describe their image in detail during 2min whilst looking at themselves in a mirror. Then, they were asked to report whether they experienced any self-face recognition difficulties. Results showed that schizophrenia patients reported more feelings of strangeness towards their face compared to healthy controls (U=209.5, p=0.048, r=0.28), but no statistically significant differences were found regarding misidentification (p=0.111) and failures in recognition (p=0.081). Symptoms such as hallucinations, somatic concerns and depression were also associated with self-face perception abnormalities (all p-values>0.05). Feelings of strangeness toward one's own face in schizophrenia might be part of a familiar face perception deficit or a more global self-disturbance, which is characterized by a loss of self-other boundaries and has been associated with abnormal body experiences and first rank symptoms. Regarding this last hypothesis, multisensorial integration might have an impact on the way patients perceive themselves since it has an important role in mirror self-perception. Copyright © 2017. Published by Elsevier B.V.

Body Image as a Mediator of Non-Suicidal Self-Injury in Adolescents

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Muehlenkamp, Jennifer J.; Brausch, Amy M.

2012-01-01

Attitudes towards the body have been largely overlooked as a potential risk factor for adolescent non-suicidal self-injury (NSSI) despite theorizing that a negative body image may play a critical role in the development of this behavior. The current study used structural equation modeling to evaluate the fit of a theoretical model specifying body…

A new technique of characterization of the intra-pixel response of astronomical detectors

International Nuclear Information System (INIS)

Ketchazo, C.; Boulade, O.; Moreau, V.; Dubreuil, D.; Ronayette, S.; Berthe, M.

2014-01-01

This paper is devoted to the presentation of a new technique of characterization of the Intra-Pixel Sensitivity Variations (IPSVs) of astronomical detectors. The IPSV is the spatial variation of the sensitivity within a pixel and it was demonstrated that this variation can contribute to the instrument global error. Then IPSV has not to be neglected especially in the case of under-sampled instruments for high quality imaging and accurate photometry. The common approaches to measure the IPSV consist in determining the pixel response function (PRF) by scanning an optical probe through the detector. These approaches require high-aperture optics, high precision mechanical devices and are time consuming. The original approach we will present in this paper consists in projecting high-resolution periodic patterns onto the whole sensor without classic optics but using the self-imaging property (the Talbot effect) of a Continuously Self Imaging Grating (CSIG) illuminated by a plane wave. This paper describes the test bench and its design rules. The methodology of the measurement is also presented. Two measurement procedures are available: global and local. In the global procedure, the mean PRF corresponding to the whole Focal Plane Array (FPA) or a sub-area of the FPA is evaluated. The results obtained applying this procedure on e2v CCD 204 are presented and discussed in detail. In the local procedure, a CSIG is moved in front of each pixel and a pixel PRF is reconstructed by resolving the inverse problem. The local procedure is presented and validated by simulations. (authors)

Self-Voice, but Not Self-Face, Reduces the McGurk Effect

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Christopher Aruffo

2011-10-01

Full Text Available The McGurk effect represents a perceptual illusion resulting from the integration of an auditory syllable dubbed onto an incongruous visual syllable. The involuntary and impenetrable nature of the illusion is frequently used to support the multisensory nature of audiovisual speech perception. Here we show that both self-speech and familiarized speech reduce the effect. When self-speech was separated into self-voice and self-face mismatched with different faces and voices, only self-voice weakened the illusion. Thus, a familiar vocal identity automatically confers a processing advantage to multisensory speech, while a familiar facial identity does not. When another group of participants were familiarized with the speakers, participants' ability to take advantage of that familiarization was inversely correlated with their overall susceptibility to the McGurk illusion.

Relationship between body dissatisfaction and disordered eating: mediating role of self-esteem and depression.

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Brechan, Inge; Kvalem, Ingela Lundin

2015-04-01

The purpose of this study was to investigate the hypothesis that the effect of body dissatisfaction on disordered eating behavior is mediated through self-esteem and depression. If the effect of body dissatisfaction on disordered eating can be explained by self-esteem and depression, treatment may benefit from focusing more on self-esteem and depression than body dissatisfaction. We also hypothesized body image importance to be associated with lower self-esteem, stronger symptoms of depression, and more disordered eating. The results showed that the effect of body dissatisfaction on disorder eating was completely mediated, whereas the effect of body image importance was partly mediated. Both self-esteem and depression were significant mediators. Body image importance and self-esteem had a direct effect on restrained eating and compensatory behavior. Depression had a direct effect on binge eating. This effect was significantly stronger among women. Depression also had a direct effect on restrained eating. This effect was positive among women, but negative among men. The results support emotion regulation and cognitive behavioral theories of eating disorders, indicating that self-esteem and depression are the most proximal factors, whereas the effect of body dissatisfaction is indirect. The results point out the importance of distinguishing between different symptoms of bulimia. Depression may cause binge eating, but compensatory behavior depends on self-esteem and body image importance. The results suggest that women may turn to both binge eating and restrained eating to escape awareness of negative emotions, whereas men focus on eating to a lesser extent than women. Existing treatment focuses on eating behavior first and mechanisms such as self-esteem and depression second. The results from this study suggest that an earlier focus on self-esteem and depression may be warranted in the treatment of disordered eating. Copyright © 2015 Elsevier Ltd. All rights

The nursing profession: public image, self-concept and professional identity: a discussion paper

NARCIS (Netherlands)

ten Hoeve, Yvonne; Jansen, Gerard; Roodbol, Petrie

2013-01-01

Aim To discuss the actual public image of nurses and other factors that influence the development of nurses' self-concept and professional identity. Background Nurses have become healthcare professionals in their own right who possess a great deal of knowledge. However, the public does not always

The nursing profession : public image, self-concept and professional identity. A discussion paper

NARCIS (Netherlands)

ten Hoeve, Yvonne; Jansen, Gerard; Roodbol, Petrie

Aim To discuss the actual public image of nurses and other factors that influence the development of nurses' self-concept and professional identity. Background Nurses have become healthcare professionals in their own right who possess a great deal of knowledge. However, the public does not always