Morphing Research Papers - Academia.edu (original) (raw)

The current study investigated detection and interpretation of emotional facial expressions in high socially anxious (HSA) individuals compared to non-anxious controls (NAC). A version of the morphed faces task was implemented to assess... more

The current study investigated detection and interpretation of emotional facial expressions in high socially anxious (HSA) individuals compared to non-anxious controls (NAC). A version of the morphed faces task was implemented to assess emotion onset perception, decoding accuracy and interpretation, either with time pressure (Restricted Viewing Task, RVT) or with unlimited viewing (Free Viewing Task, FVT). Twenty-seven HSA and 30 NAC viewed sequences of neutral faces slowly changing to full-intensity angry, happy, or disgust expressions. Participants were instructed to assign the expression as soon as possible to one of four given emotion categories (angry, contempt, disgust, or happy). While no group differences were found for emotion onset perception or decoding performance, the results suggest an interpretation bias in HSA. Under the RVT condition, HSA demonstrated a threat bias (disgust interpreted as contempt), contrasting the NAC's positive bias (disgust interpreted as happy). No group differences were found in the FVT. We suggest that socially anxious individuals tend to misinterpret facial expressions as threatening when they must do so quickly and efficiently, as in real life. (C) 2010 Elsevier Ltd. All rights reserved.

This study aims to review wind morphing technology. Wing morphing is a newly emerging field of research in aeronautical engineering, which generally deals with supplanting the traditional wing flight dynamics and making it more efficient.... more

This study aims to review wind morphing technology. Wing morphing is a newly emerging field of research in aeronautical engineering, which generally deals with supplanting the traditional wing flight dynamics and making it more efficient. This paper highlights the major advances in the field of research such that an overview of the methodology and findings of the researchers is provided. This is achieved by categorizing wing morphing and defining each of its types and then providing examples from past research. It is a qualitative study, and data were gathered from journal articles, conference papers, reports, and books. This study analyzed various types of wing morphing techniques prevalent now. Three major types of wing morphing technologies, including Planform, Out-of-Plane, and Airfoil morphing, along with their subtypes, have been discussed. This study is relevant in current times as morphing has developed significantly in recent years. It is a concise and comprehensive overview of the types of structural wing morphing for fixed wings. It hence is useful as a beginner's read into the vast world of futuristic-aerodynamic research.

The paper presents on-going work conducted on extreme and cyclic aerodynamic load alleviation of wind turbine blades (WTB) using morphing blade sections. Promising morphing concepts considering either mechanisms or a continuously... more

The paper presents on-going work conducted on extreme and cyclic aerodynamic load alleviation of wind turbine blades (WTB) using morphing blade sections. Promising morphing concepts considering either mechanisms or a continuously deforming airfoil structure are studied in detail. Antagonistic shape memory alloy (SMA) wire/rod actuators are investigated in order to deflect the morphing trailing edge (TE) section both upwards and downwards. A morphing section of a WTB is first designed to follow target airfoil shape profiles which yield prescribed changes in the lift coefficient. Subsequently, the morphing airfoil is designed to follow prescribed target time trajectories with the aid of a PID controller, based on time series data relating the trailing edge movement with the time variation of the lift coefficient obtained through aeroelastic analyses. The thermomechanically coupled time response of the morphing section is simulated using specialty finite element models. The development of the morphing WTB section revealed several challenges. These include the enhancement of the slow response of SMA actuators, the retainment of stresses and power within reasonable limits and the minimization of tracking error. A PID controller is described and optimized to achieve fast actuator response through optimized cooling and heating cycles. Numerical results quantify the trailing edge angular movement, the time response of the morphing section and the developed stresses in the actuators. Estimations of the achieved variations of lift coefficient vs. time are also presented to assess the aerodynamic performance of the morphing section. [publication ISBN: 1634398084, 9781634398084]

Based on Wishart's literature, this paper investigates the most frequent and significant recorded voice transformation processes, and its correlation with the compos-er's compositional goals, presented on four Trevor Wishart's acousmatic... more

Based on Wishart's literature, this paper investigates the most frequent and significant recorded voice transformation processes, and its correlation with the compos-er's compositional goals, presented on four Trevor Wishart's acousmatic pieces: Vox-5, Tongues of Fire, Globalalia and Encounters in the Republic of Heaven. Although Wishart developed new sound transformations using the phase-vocoder, the selection of the materials takes a key role in determining which sound metamorphosis would fit his aesthetic goal: retain the source credibility from the listener perspective. This articles shows how his compositional goals in each piece demands both specific recorded materials and precise transformation processes in order to achieve his intention with respect to the listener. Hence, one of the main relevant aspects of Wishart's work for electroacoustic composers is to reveal-from the audience point of hearing-subtleties between natural and artificial transformations of voice samples.

This paper present a application for enhancing security in internet banking .This paper mainly consists of image morphing, steganography and compression for security purpose. This proposal provides OTP security using image processing .The... more

This paper present a application for enhancing security in internet banking .This paper mainly consists of image morphing, steganography and compression for security purpose. This proposal provides OTP security using image processing .The idea is to encrypt the OTP behind cover image. It includes theoretical analysis of image Steganography, compression and morphing.

We report a compact, high-power, fiber-based source for ultrahigh-resolution optical coherence tomography (OCT) near 1 microm. The practical source is based on a short-pulse, ytterbium-doped fiber laser and on generation of a continuum... more

We report a compact, high-power, fiber-based source for ultrahigh-resolution optical coherence tomography (OCT) near 1 microm. The practical source is based on a short-pulse, ytterbium-doped fiber laser and on generation of a continuum spectrum in a photonic crystal fiber. The broadband emission has an average power of 140 mW and offers an axial resolution of 2.1 microm in air (<1.6 microm in biological tissue). The generation of a broad bandwidth is robust and efficient. We demonstrate ultrahigh-resolution, time-domain OCT imaging of in vitro and in vivo biological tissues.

The requirement of mitigating the environmental impact of helicopters has been addressed globally within the FRIENDCOPTER Project in the sen-se that several aspects (such as noise abatement, vibration reduction, fuel consumption) have... more

The requirement of mitigating the environmental impact of helicopters has been addressed globally within the FRIENDCOPTER Project in the sen-se that several aspects (such as noise abatement, vibration reduction, fuel consumption) have been studied in parallel with different approaches among which there is the active blade control. In the work at hand, attention is paid on two topics aimed at mitigating helicopter environmental impact through a morphing strategy: the aerodynamic optimization of a blade section who-se camber can be affected by an actuator and the design of a SMA based static twist concept, aimed at extending the helicopter flight envelope. The latter device is based on a SMA rod which is integrated in the spanwise di-rection within the blade structure at different positions. The actuator, when heated, transmits a torque couple which induces twist onto the blade. The twist variation due to the SMA device activation has been predicted by a FE approach (MSC/Marc software...

To assess photoreceptor integrity in patients with retinitis pigmentosa (RP) and related diseases using ultra-high resolution optical coherence tomography (UHR-OCT) and to correlate foveal photoreceptor loss with visual... more

To assess photoreceptor integrity in patients with retinitis pigmentosa (RP) and related diseases using ultra-high resolution optical coherence tomography (UHR-OCT) and to correlate foveal photoreceptor loss with visual acuity.Observational case series.Nine eyes of nine patients with RP and related diseases were imaged with UHR-OCT at the ophthalmology clinic. Patients were diagnosed based on history, examination, fluorescein angiography, and electroretinography. Concurrently, 36 eyes of 36 normal subjects were imaged with UHR-OCT. Central foveal thickness (CFT) and foveal outer segment/pigment epithelium thickness (FOSPET) were defined and measured on UHR-OCT images in all subjects and were compared between the two groups using unpaired t tests. The two thickness measurements in RP patients were correlated with visual acuity using Pearson correlation and linear regression.UHR-OCT demonstrated macular photoreceptor thinning in all RP patients. The difference in CFT between RP patients and normal subjects was not statistically significant (P = .103), but the difference in FOSPET between the two groups was significant (P = .003). Visual acuity showed a fair correlation with CFT (Pearson r = −0.43, r2 = 0.187, P = .245) and an excellent correlation with FOSPET (Pearson r = −0.942, r2 = 0.887, P < .0001).In the current study using UHR-OCT, a new thickness measurement termed FOSPET is demonstrated to quantify photoreceptor loss. FOSPET was statistically thinner in patients with RP and related diseases than in normal eyes and showed correlation with logMAR visual acuity. FOSPET appears to be a probable predictor of visual acuity in RP.

ABSTRACTA new wing-tip concept with morphing upper surface and interchangeable conventional and morphing ailerons was designed, manufactured, bench and wind-tunnel tested. The development of this wing-tip model was performed in the frame... more

ABSTRACTA new wing-tip concept with morphing upper surface and interchangeable conventional and morphing ailerons was designed, manufactured, bench and wind-tunnel tested. The development of this wing-tip model was performed in the frame of an international CRIAQ project, and the purpose was to demonstrate the wing upper surface and aileron morphing capabilities in improving the wing-tip aerodynamic performances. During numerical optimisation with ‘in-house’ genetic algorithm software, and during wind-tunnel experimental tests, it was demonstrated that the air-flow laminarity over the wing skin was promoted, and the laminar flow was extended with up to 9% of the chord. Drag coefficient reduction of up to 9% was obtained when the morphing aileron was introduced.

A paper beginning with the concept of magical transformation. [Coherent Systems A.3.C.4.]

The adaptive structures concept is of great interest in the aerospace field because of the several benefits which can be accomplished in the fields including noise reduction, load alleviation, weight reduction, etc., at a level in which... more

The adaptive structures concept is of great interest in the aerospace field because of the several benefits which can be accomplished in the fields including noise reduction, load alleviation, weight reduction, etc., at a level in which they can be considered as compulsory in the design of future aircraft. Improvements in terms of the aerodynamic efficiency, aeroelastic behavior, stability, and manoeuvrability performance have already been proved through many international studies in the past. In the family of the Smart Materials, Shape Memory Alloys (SMA) seem to be a suitable solution for many static applications. Their high structural integrability in conjunction with actuation capabilities and a favorable performance per weight ratio, allows the development of original architectures. In this study, a morphing wing trailing edge concept is presented; morphing ability was introduced with the aim of replacing a conventional flap device. A compliant rib structure was designed, based on SMA actuators exhibiting structural potential (bearing external aerodynamic loads). Numerical results, achieved through a FE approach, are presented in terms of trailing edge induced displacement and morphed shape.

Image Morphing is one of the most powerful Digital Image processing technique, which is used to enhance many multimedia projects, presentations, education and computer based training. It is also used in medical imaging field to recover... more

Image Morphing is one of the most powerful Digital Image processing technique, which is used to enhance many multimedia projects, presentations, education and computer based training. It is also used in medical imaging field to recover features not visible in images by establishing correspondence of features among successive pair of scanned images. This paper discuss what morphing is and implementation of Triangulation based morphing Technique and Feature based Image Morphing. IT analyze both morphing techniques in terms of different attributes such as computational complexity, Visual quality of morph obtained and complexity involved in selection of features.

It is sure that contemporary architecture has folded itself to influence of formal metamorphoses, about this it is spoken many times. In the last years two tendencies made their way: from a part the deformation hits the objects as they... more

It is sure that contemporary architecture has folded itself to influence of formal metamorphoses, about this it is spoken many times. In the last years two tendencies made their way: from a part the deformation hits the objects as they were bodies liquids, in name of a fluid curvilinearity, dynamics due to multiple geometric operations, than the solid modelling can offer. This variety of architecture, generalized in a shapeless mass, suspended between geometric rule and evasive tectonics, it takes name of Blob.
On the other hand, cultural inheritance left to the posterity, from a Deconstructivism, that we could say digitalized, also maintaining the logical ones of the taking apart of versatile figures, then reassembled in strident units, folds the plans in motion, sharpening them like blades of shavers towards imaginary points of escape. Both the roads embrace similar methods of modelling, based on techniques of projective deformation, morphing, warping.

Neutron diffraction is a standard method for determining the structure of matter on an atomic scale; NMR cryoporometry is a recent widely applicable technique for characterising structure on a 2nm to 2 mm scale. An extension of these... more

Neutron diffraction is a standard method for determining the structure of matter on an atomic scale; NMR cryoporometry is a recent widely applicable technique for characterising structure on a 2nm to 2 mm scale. An extension of these techniques is described, Neutron Diffraction Cryoporometry (NDC). The information from a set of neutron diffraction measurements of liquids and their crystalline forms in meso-pores, as a function of temperature, is displayed as a cryoporometry graph. The data may then be conveniently interpreted using the Gibbs–Thomson relationship by analogy with the existing technique, NMR cryoporometry. Clear information is thus obtained on the relationship between phase and nano-structure, in a form well suited to further analysis. This method is applied to an equilibrium study of water/ice in SBA-15 templated silicas, as model nano- to meso-structured systems. The method described here uses global pattern matching (a one-dimensional morphing algorithm inside a linear least-squares fitting algorithm) applied to the full range of the diffraction data. This is a rapid method by comparison with the conventional method of fitting individual (overlapping) peaks, and has already led to NMR observations indicating plastic (rotator phase) ice in the same system.
r 2007 Elsevier B.V. All rights reserved.
PACS: 64.60.i; 81.07.b; 61.12.Ld; 61.18.Fs; 03.75.Hh; 05.70.Fh; 64.60.Qb; 64.70.Dv; 68.03.Cd; 68.08.p; 82.56.Na; 82.56.Ub; 61.43.Gt; 61.46.+w;
82.60.Qr
Keywords: Confined geometry; Phase-change; Gibbs–Thomson; Neutron scattering; Neutron diffraction; Plastic ice; NMR; NMR relaxation; Cryoporometry; DSC; Thermoporosimetry; Global fitting; Pattern matching; Morphing; Porous silica

Cette thèse aborde principalement trois grands aspects tels que la systématisation et l'analyse structurale, la modélisation géométrique et cinématique et les stratégies de contrôle. La première partie de la thèse est consacrée à... more

Cette thèse aborde principalement trois grands aspects tels que la systématisation et l'analyse structurale, la modélisation géométrique et cinématique et les stratégies de contrôle. La première partie de la thèse est consacrée à l'élaboration d'une approche pour la systématisation des mécanismes reconfigurables selon leurs paramètres structuraux tels que la mobilité, la connectivité, la redondance et l’hyperstatisme. Ces paramètres nous permettent de comprendre les mécanismes et de les systématiser selon leur type de mouvement ; le mécanisme peut être isostatique ou hyperstatique, redondant ou non-redondant, avec ou sans mobilités internes, etc. Afin de résoudre les problèmes pratiques de modélisation, contrôle, simulation et développement du robot, les paramètres structuraux sont nécessaires. Différents types de singularités sont systématisés et analysés en tenant compte de paramètres structuraux. En plus, pour connaître les positions et les orientations relatives des ...

The paper presents the method for interpolating digital images that automatically generates a sequence of images showing the methamor- phosis of the content of the first image into the content of the second. Morphological interpolation... more

The paper presents the method for interpolating digital images that automatically generates a sequence of images showing the methamor- phosis of the content of the first image into the content of the second. Morphological interpolation performs this transformation by the modification of shapes of objects present in both images. The method is based on universal morphological interpolator, which - thanks to its parameters - allows obtaining various results of transformation. The method makes use of interpolation function that is computed based on geodesic distance functions. The method, originally applied only to interpolate binary images, may also be used to morph graytone and (in some extent) color images, what is also presented in the paper.