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Letteratura scientifica selezionata sul tema "PCA AND DWT"

Autore: Grafiati

Pubblicato: 11 settembre 2023

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Articoli di riviste sul tema "PCA AND DWT"

Takale, Swapnil, e Dr Altaaf Mulani. "DWT-PCA based Video Watermarking". Journal of Electronics,Computer Networking and Applied Mathematics, n. 26 (17 novembre 2022): 1–7. http://dx.doi.org/10.55529/jecnam.26.1.7.

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Progressed watermarking video may be a methodology for embedding additional data another to video salute. Embedded data is utilized for proprietor copyright or recognizable affirmation. It added up to approach for watermarking is shown in this System, by utilizing Discrete Wavelet Alter (DWT) and Crucial Component Examination (PCA). There are a number of watermarking strategies like DCT, DWT, and DWT-SVD, but there's a downside inside the watermarking to stand up to attacks. In this way the cutting edge progressed picture watermarking calculation is proposed which provide solid watermarking with insignificant whole of bending in case of ambushes. DWT offers flexibility and PCA makes a distinction in diminishing relationship among the wavelet coefficients.

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HIEN, THAI DUY, YEN-WEI CHEN e ZENSHO NAKAO. "ROBUST DIGITAL WATERMARKING BASED ON PRINCIPAL COMPONENT ANALYSIS". International Journal of Computational Intelligence and Applications 04, n. 02 (giugno 2004): 183–92. http://dx.doi.org/10.1142/s1469026804001240.

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We propose a robust digital watermarking technique based on Principal Component Analysis (PCA) and evaluate the effectiveness of the method against some watermark attacks. In this proposed method, watermarks are embedded in the PCA domain and the method is closely related to DCT or DWT based frequency-domain watermarking. The orthogonal basis functions, however, are determined by data and they are adaptive to the data. The presented technique has been successfully evaluated and compared with DCT and DWT based watermarking methods. Experimental results show robust performance of the PCA based method against most prominent attacks.

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J, Madhavan. "Performance Comparison of PCA,DWT-PCA And LWT-PCA for Face Image Retrieval". Computer Science & Engineering: An International Journal 2, n. 6 (31 dicembre 2012): 41–50. http://dx.doi.org/10.5121/cseij.2012.2604.

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Upadhyaya, Prashant, Omar Farooq, M. R. Abidi e Priyanka Varshney. "Comparative Study of Visual Feature for Bimodal Hindi Speech Recognition". Archives of Acoustics 40, n. 4 (1 dicembre 2015): 609–19. http://dx.doi.org/10.1515/aoa-2015-0061.

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Abstract In building speech recognition based applications, robustness to different noisy background condition is an important challenge. In this paper bimodal approach is proposed to improve the robustness of Hindi speech recognition system. Also an importance of different types of visual features is studied for audio visual automatic speech recognition (AVASR) system under diverse noisy audio conditions. Four sets of visual feature based on Two-Dimensional Discrete Cosine Transform feature (2D-DCT), Principal Component Analysis (PCA), Two-Dimensional Discrete Wavelet Transform followed by DCT (2D-DWT- DCT) and Two-Dimensional Discrete Wavelet Transform followed by PCA (2D-DWT-PCA) are reported. The audio features are extracted using Mel Frequency Cepstral coefficients (MFCC) followed by static and dynamic feature. Overall, 48 features, i.e. 39 audio features and 9 visual features are used for measuring the performance of the AVASR system. Also, the performance of the AVASR using noisy speech signal generated by using NOISEX database is evaluated for different Signal to Noise ratio (SNR: 30 dB to −10 dB) using Aligarh Muslim University Audio Visual (AMUAV) Hindi corpus. AMUAV corpus is Hindi continuous speech high quality audio visual databases of Hindi sentences spoken by different subjects.

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A. Patil, Supriya. "Digital Video Watermarking Using Dwt And Pca". IOSR Journal of Engineering 3, n. 11 (novembre 2013): 45–49. http://dx.doi.org/10.9790/3021-031144549.

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Kabir Rana, Humayan, Md Shafiul Azam e Mst Rashida Akhtar. "Iris Recognition System Using PCA Based on DWT". SM Journal of Biometrics & Biostatistics 2, n. 3 (2017): 1–5. http://dx.doi.org/10.36876/smjbb.1015.

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Deepa, S., e V. Vijaya Chamundeeswari. "Genetic Based Face Recognition for Healthcare Applications". Journal of Medical Imaging and Health Informatics 10, n. 3 (1 marzo 2020): 593–603. http://dx.doi.org/10.1166/jmihi.2020.2965.

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Face recognition is a significant biometric credential in the field of security authentication. It additionally assumes a noteworthy job in image processing and it is applicable in various systems like verifying the identity of the person and in security purpose. Recognizing the face with varying background, poses and illumination are the complexity involved in this face recognition. Many algorithms exist for face recognition, of which, Discrete Wavelet Transform (DWT) with Principal Component Analysis (PCA) works better for recognition of faces. An algorithm using 3 Level-DWT and modified PCA is proposed for feature extraction. The PCA and reconstruction of images using Inverse PCA, help not only for dimensionality reduction, but also to find the least principal components (PC) of an image from which the significant features of a face image can be extracted. The significant features thus extracted are used for classifying genetic and non-genetic faces. Using extracted features from 3 level DWT and PCA, Support vector machine (SVM) is utilized to classify the faces genetically. The proposed extracted features does not intend to certain features like ears, nose and eyes of the face, but corresponds to identify the faces which are genetically similar. Based on the statistical measure analysis, the proposed algorithm 3 Level dwt with modified PCA works well in extracting the features for identifying the faces which are genetically closer. This face recognition application system can be effectively used to treat a patient in other location with complete security. There is no chance for data stealing, since the concerned doctors and patient only will take part in the system. The identification of genetic faces will turn out to be an achievement in the field of health care monitoring systems.

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Rana, Humayan Kabir, Md Shafiul Azam, Mst Rashida Akhtar, Julian M. W. Quinn e Mohammad Ali Moni. "A fast iris recognition system through optimum feature extraction". PeerJ Computer Science 5 (8 aprile 2019): e184. http://dx.doi.org/10.7717/peerj-cs.184.

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With an increasing demand for stringent security systems, automated identification of individuals based on biometric methods has been a major focus of research and development over the last decade. Biometric recognition analyses unique physiological traits or behavioral characteristics, such as an iris, face, retina, voice, fingerprint, hand geometry, keystrokes or gait. The iris has a complex and unique structure that remains stable over a person’s lifetime, features that have led to its increasing interest in its use for biometric recognition. In this study, we proposed a technique incorporating Principal Component Analysis (PCA) based on Discrete Wavelet Transformation (DWT) for the extraction of the optimum features of an iris and reducing the runtime needed for iris template classification. The idea of using DWT behind PCA is to reduce the resolution of the iris template. DWT converts an iris image into four frequency sub-bands. One frequency sub-band instead of four has been used for further feature extraction by using PCA. Our experimental evaluation demonstrates the efficient performance of the proposed technique.

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Michael Zimba, e Sun Xingming. "DWT-PCA (EVD) Based Copy-move Image Forgery Detection". International Journal of Digital Content Technology and its Applications 5, n. 1 (31 gennaio 2011): 251–58. http://dx.doi.org/10.4156/jdcta.vol5.issue1.27.

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Ghadekar, Premanand Pralhad, e Nilkanth Bhikaji Chopade. "Modelling Nonlinear Dynamic Textures using Hybrid DWT–DCT and Kernel PCA with GPU". Journal of The Institution of Engineers (India): Series B 97, n. 4 (21 giugno 2016): 549–55. http://dx.doi.org/10.1007/s40031-016-0220-1.

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Più fonti

Tesi sul tema "PCA AND DWT"

RAWAT, URVASHI. "INFRARED AND VISIBLE IMAGE FUSION USING HYBRID LWT AND PCA METHOD". Thesis, DELHI TECHNOLOGICAL UNIVERSITY, 2021. http://dspace.dtu.ac.in:8080/jspui/handle/repository/18907.

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Image fusion is a method in which all the relevant information is collected from the input source images and included in few/single output image. Image fusion techniques are divided into two broad categories: spatial domain and transform domain. Principal component analysis (PCA) is a spatial domain technique which is computationally simpler and reduces redundant information but has the demerit of spectral degradation. Lifting wavelet transform (LWT) is a transform domain technique which has an adaptive design and demands less memory. In this project, a novel hybrid fusion algorithm has been introduced which combines the LWT and PCA in a parallel manner. These two fusion methods are applied on Infrared and Visible image data set. Infrared and visible images contain complementary information and their fusion gives us an output image which is more informative than the individual source images. The hybrid method is also compared with conventional fusion techniques like PCA, LWT and DWT. It has been shown that the proposed method outperforms the conventional methods. The results are analyzed using performance parameters standard deviation, average value, the average difference, and normalized cross- correlation.

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Strakoš, Libor. "Využití EEG ve vyhodnocování emocionálních stavů člověka". Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-241968.

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This thesis is focused on EEG processing and emotion classification within two-dimensional emotion space. First part consists of theoretical research about emotional responses of human subjects on sound, image and video stimuli. Emotions are examined from aspect of physiology and psychology. Furthermore technical overview of measurement, analysis and emotion classification within two-dimensional emotional space is discussed. Based on gathered knowledge measurement setup with audiovisual stimuli was designed and measured with two independent instruments – EGI GES400MR in laboratory conditions and Emotiv EPOC device in non-laboratory conditions. Signals were processed and emotions were classified based on chosen features. Performance of classifiers in multiple feature selection setups was evaluated.

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Štens, Radovan. "Analýza obrazových dat funkční magnetické rezonance (fMRI)". Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-375489.

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Master's thesis focuses on processing fMRI data, which are mapping blood oxygenation level dependence in a state of brain activity. Usable and necessarily preprocessing tech- niques of the data, together with two main analysis approaches are introduced. The area of univariate methods, especially general linear model and multivariate principal or independent component analysis is explained. Practical application of the methods involved on the real fMRI data set is implemented. Relevant results as well as theirs mutual possible comparison is presented.

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Roset, Cazalda Mª Lourdes. "Estudi de la utilització dels mapes de potencial electrostàtic i de polarització com a descriptors moleculars". Doctoral thesis, Universitat Politècnica de Catalunya, 2011. http://hdl.handle.net/10803/51884.

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La Ingeniería molecular se basa en el conocimiento de las características estereoelectrónicas que definen el reconocimiento molecular, que es el resultado de una complementariedad, tanto geométrica como electrónica, entre diferentes entidades moleculares. La importancia de las diferentes contribuciones electrostáticas nos permite realizar un estudio teórico de predicción de la reactividad y otras propiedades moleculares a partir de cálculos de potencial electrostático y de polarización moleculares. El presente trabajo se basa en el estudio de la utilización de los mapas de potencial electrostático y de potencial de polarización como descriptores moleculares. En primer lugar se realiza un estudio del efecto de la base y de la metodología empleada en el cálculo de propiedades eléctricas de primer y segundo orden. El análisis se lleva a cabo con las moléculas de cianuro de hidrógeno, formaldehído y urea. Las bases utilizadas son del tipo doble zeta estándar, a las cuales se han añadido funciones de polarización y difusas. En particular, se han utilizado la base doble zeta 6-31G(d), les bases doble zeta aumentadas con uno o dos conjuntos de funciones de polarización : 6-31G(d,p) , 6-31G(2d,2p) y también se ha utilizado la base 6-311G++(2d,2p), que incluye funciones difusas. Los diferentes niveles de cálculo utilizan metodologías Hartree-Fock, MÆller-Plesset de segundo y cuarto orden y teoría del funcional de la densidad (DFT) : SCF, MP2, MP4, BLYP i B3LYP. Se analiza el efecto de los diferentes conjuntos de base a la contribución de la polarización a la energía de interacción, calculando para cada sistema propiedades de primer orden, como son los momentos dipolares y los momentos cuadrupolares, y propiedades de segundo orden, como la polarizabilidad y hiperpolarizabilidad moleculares. Seguidamente se evalúa el efecto de la base y el método de cálculo en la obtención de potenciales electrostáticos y de polarización moleculares. Se realiza un estudio comparativo de los mapas calculados con diferentes bases y metodologías, en concreto un estudio de la distribución espacial y un análisis de correlación entre las diferentes bases y metodologías. Un análisis de los mapas de polarización molecular a partir del cálculo de las diferencias de polarización relativas y las desviaciones estándar correspondientes nos permite un estudio comparativo de las diferentes metodologías y bases utilizadas. En particular se realiza un análisis comparativo entre diferentes métodos de cálculo con la base 6-311G++(2d,2p), tomando como referencia el cálculo MP4. Finalmente, se utilizan los mapas de potencial electrostático, de polarización y de interacción para el análisis de las características de reconocimiento molecular de un conjunto de compuestos bioactivos, a fin de analizar la importancia de la contribución de la polarización. Por este motivo, se elige para el estudio un conjunto de moléculas con una alta polarizabilidad, y en concreto, dos familias de compuestos con abundantes átomos de cloro y con una actividad tóxica definida, que forman parte de los grupos de dioxinas y furanos. Para ello se realiza el estudio de la inclusión de la polarización molecular como descriptor en la predicción de la actividad biológica de dioxinas y furanos, realizando el cálculo de potenciales electrostáticos y de polarización, un análisis de los mapas de potencial, y definiendo las principales zonas de interacción electrostática y de polarización molecular a partir de cálculos de componentes principales (PCA), así como la predicción de la actividad biológica en base a un estudio realizado mediante cálculos de mínimos cuadrados parciales (PLS).
Molecular engineering is based on the knowledge of the stereoelectronic features that define the molecular recognition, which is the result of the complementarity of geometric and electronic features between two different molecular entities. The importance of different electrostatic contributions allows us to make a theoretical prediction of molecular properties, from calculations of electrostatic potential and molecular polarization. This work is based on the study of the use of maps of electrostatic potential and polarization potential as molecular descriptors. First there is a study of the effect of the basis set and the methodology used in the calculation of first and second order electrical properties. The analysis was carried out with the molecules of hydrogen cyanide, formaldehyde and urea. The base sets used are the standard double-zeta, to which were added polarization and diffuse functions. In particular, we have used the double zeta basis 6-31G (d), double zeta basis augmented with one or two sets of polarization functions: 6-31G (d, p), 6-31G (2d, 2p) and also used the base 6-311G + + (2d, 2p), which includes diffuse functions. The different levels of calculation methodologies used Hartree-Fock, Moller-Plesset second and fourth order and the theory of density functional (DFT): SCF, MP2, MP4, BLYP B3LYP i. We analyze the effect of different sets based on the contribution of polarization to the interaction energy, calculated for each system of first order properties, such as dipolar moments and quadrupolar moments, and second order properties such as polarizability and molecular hyperpolarizability. Further, the effect of the basis and method on the calculation of the electrostatic potential and molecular polarization potentials is evaluated. For this purpose we performed a comparative study of the maps calculated with different basis sets and methodologies, in particular a study of the spatial distribution and correlation analysis between the different data bases and methodologies was done. An analysis of molecular polarization maps by calculating the differences in polarization and relative standard deviation allows for a comparative study of different methodologies and bases used. Specifically, a comparative analysis between different methods of calculating the base 6-311G + + (2d, 2p), calculated by reference to the MP4 was done. We use maps of electrostatic, polarization and interaction potentials for the analysis of molecular recognition features of a set of bioactive compounds, to discuss the importance of the contribution of polarization. For this reason, we choose to study a set of molecules with high polarizability, specifically, two families of compounds with heavy atoms of chlorine and defined toxic activity, which are part of groups of dioxins and furans. A study of the polarization maps as indicators of biological activity of dioxins and furans, based on the best methodology is done. The inclusion of polarization as a molecular descriptor for predicting biological activity of dioxins and furans was studied from the calculation of electrostatic potentials and polarization, an analysis of the potential maps, and defining the main areas of interaction molecular electrostatic and polarization interaction from calculations of principal components (PCA) and the prediction of biological activity based on a study by calculation of partial least squares (PLS).

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Šrenk, David. "Vizualizace spektroskopických dat pomocí metody analýzy hlavních komponent". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-401532.

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This diploma thesis deals with using laser-induced breakdown plasma spectroscopy for determining the elemental structure of unknown samples. It was necessary to design an appropriate method to qualify material by laser-induced emission spectrum. Pretreatment of data and using a variety of chemometrics methods had to be done in order to qualify the structure of elements. We achieved a required solution by projecting the data to a new PCA space, creating clusters and computing the Euclidean distance between each cluster. The experiment in the practical part was set to detect an interface of two elements. We created a data file simulating the ablation on the interface. This data set was gradually processed applying a mathematical-chemical-physical view. Several data procedures have been compiled: approximation by Lorenz, Gauss and Voigt function and also a pretreatment method such as the detection of outliers, standardization by several procedures and subsequent use of principal components analysis. A summarization of processes for input data is fully described in the thesis.

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Thieullen, Alexis. "Méthodologie pour la détection de défaillance des procédés de fabrication par ACP : application à la production de dispositifs semi-conducteurs". Thesis, Aix-Marseille, 2014. http://www.theses.fr/2014AIXM4329.

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L'objectif de cette thèse est le développement d'une méthodologie pour la détection de défauts appliquée aux équipements de production de semi-conducteurs. L'approche proposée repose sur l'Analyse en Composantes Principales (ACP) pour construire un modèle représentatif du fonctionnement nominal d'un équipement. Pour cela, notre méthodologie consiste à exploiter l'ensemble des mesures disponibles, collectées via les capteurs internes et externes au cours desopérations de fabrication pour chaque plaque manufacturée. Nous avons développé un module de pré-traitement permettant de transformer les mesures collectées en données interprétables par l'ACP, tout en filtrant l'information considérée comme non-désirable induite par la présence de valeurs aberrantes et perturbant la construction du modèle. Nous avons combiné des extensions de l'ACP linéaire et notamment l'ACP multiway, l'ACP filtrée ainsi que l'ACP récursive, de façon à adapter la modélisation aux caractéristiques des systèmes. L'utilisation d'un filtre par moyenne mobile exponentielle nous permet de considéré la dynamique du système au cours de la réalisation d'une opération. L'ACP récursive est employée pour adapter le modèle aux changements de comportement du système après certains événements (maintenance, redémarrage, etc.).Les différentes méthodes sont illustrées à l'aide de données réelles, collectées sur un équipement actuellement exploité par STMicroelectronics Rousset. Nous proposons également une application plus générale de la méthode pour différents types d'équipement et sur une période plus importante, de façon à montrer l'intérêt industriel et la performance de cette approche
This thesis focus on developping a fault detection methodology for semiconductor manufacturing equipment. The proposed approach is based on Principal Components Analysis (PCA) to build a representative model of equipment in adequat operating conditions. Our method exploits collected measurements from equipement sensors, for each processed wafer. However, regarding the industrial context and processes, we have to consider additional problems: collected signals from sensors exhibit different length, or durations. This is a limitation considering PCA. We have also to consider synchronization and alignment problems; semiconductor manufacturing equipment are almost dynamic, with strong temporal correlations between sensor measurements all along processes. To solve the first point, we developped a data preprocessing module to transform raw data from sensors into a convenient dataset for PCA application. The interest is to identify outliers data and products, that can affect PCA modelling. This step is based on expert knowledge, statistical analysis, and Dynamic Time Warping, a well-known algorithm from signal processing. To solve the second point, we propose a combination multiway PCA with the use of an EWMA filter to consider process dynamic. A recursive approach is employed to adapt our PCA model to specific events that can occur on equipment, e.g. maintenance, restart, etc.All the steps of our methodology are illustrated with data from a chemical vapor deposition tool exploited in STMicroelectroics Rousset fab. Finally, the efficiency and industrial interest of the proposed methodologies are verified by considering multiple equipment types on longer operating periods

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Brychta, Jan. "Aplikace pro zpracování dat z oblasti genového inženýrství". Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2008. http://www.nusl.cz/ntk/nusl-235899.

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This masters thesis has a few objectives. One of them is to acquaint with the problems of genome engineering, especially with fragmentation of DNA, the macromolecule DNA, the methods for purification and separation of the nucleic acids, the enzymes used for modification of these acids, amplification and get to know with cluster and gradient analysis as well. The next aim is to peruse the existed application and compare it to the layout of the proposed application, that is the third aim. The last one from the objectives is the implementation and the report how was the application tested by the real data. The results will be discussed as well as the possibilities of the further extension.

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Tran, Van Nam. "Adsorption statique de PCB et de DDT sur charbons actifs en milieux aqueux". Thesis, Lyon 1, 2012. http://www.theses.fr/2012LYO10301.

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L’adsorption solide-liquide des PCB et des DDT constitue un moyen efficace pour leur récupération des eaux polluées à condition d’avoir une meilleure connaissance du mécanisme impliqué. Les cinétiques d’adsorption statique ont été principalement réalisées à 25 °C avec le2-PCB, un mélange de tétra-, penta- et hexa-CB et le 4,4’-DDT sur 3 charbons actifs (CA) en poudre différents par le précurseur (houille, bois) et le mode d’activation (H2O, H3PO4) dans l’eau, en présence ou non d’éthanol. Les résultats marquants ont été les suivants : L’adsorption du polluant sur le CA est d’autant plus favorisée que sa solubilité dans la phase liquide est plus faible. Ainsi, l’adsorption du polluant hydrophobe est très augmentée dans l’eau pure. L’adsorption des polluants favorisée par la microporosité développée est essentiellement un phénomène de surface où interviennent les forces de Van der Waals. Une bonne adéquation entre la taille des molécules et la largeur moyenne des pores en forme de fentes montre un confinement maximum des molécules dans la microporosité. L’interaction π−π entre adsorbat et adsorbant, favorisée par le nombre de Cl n’est pas à exclure. Enfin, nous avons montré par la cinétique dans les conditions initiales que l’adsorption y est limitée par le transfert de masse externe. Les modélisations par diffusion superficielle homogène (HSDM), conduisant aux coefficients de diffusion superficielle interne, ont montré que la cinétiqued’adsorption est presque complètement gouvernée par la diffusion intraparticulaire
The solid-liquid adsorption of PCBs and DDT is an effective process for the recuperation of wastewaters but a better understanding of the involved mechanism is required. In this study, the static adsorption kinetics were mainly carried out at 25 ° C for 2-PCB, a mixture of tetra-, penta-and hexa-CB, and 4,4 '-DDT onto three different powdered activated carbons (AC) of the precursor (coal, wood) and the activation mode (H2O, H3PO4) in water, with or without ethanol. The prominent results were as follows: The adsorption of the pollutant on the AC is favored if its solubility in the liquid phase is lower. As a result, the adsorption of the hydrophobic pollutant is significantly increased in pure water. Moreover, the adsorption of pollutants favored by the developed microporosity is a surface phenomenon which involved the Van der Waals forces. A good fit between the size of molecules and the average width of the slit-shape pores gave a maximum confinement of molecules in the micropores. The π−π interaction between adsorbate and adsorbent, favored by the number of Cl, is not excluded. Finally, by studying the kinetics of the initial conditions, we found that the adsorption is limited by the external mass transfer. The internal surface diffusion coefficients estimated from applying the homogeneous surface diffusion models (HSDM) showed that the adsorption kinetics are almost completely governed by the intra-particle diffusion

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Ciro, Guido. "TD-DFT and TD-DFT/PCM approaches to molecular electronic excited states in gas phase and in solution". Doctoral thesis, Scuola Normale Superiore, 2011. http://hdl.handle.net/11384/85797.

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Nechutová, Vendula. "Analýza chemických vazeb ve slitinách pomocí dolování dat". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-402554.

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The thesis deals with aplication of data mining methods for the analysis of two Ni3Si supercells, one with a stable grain boundary and the second one with unstable grain boundary. DOS and COHP curves are examined using selected curve matching methods. The surroundings of the individual atoms are examined by the Voronoi diagram. This information was used to reveal the differences in binding between stable and unstable supercell.

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Più fonti

Libri sul tema "PCA AND DWT"

The true story of DDT, PCB, and Dioxin. Wrocław: Wydawnictwo Chemiczne, 2005.

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Peterschmidt, Mark. Lower Okanogan DDT PCB: Water quality implementation plan (detailed implementation plan). Yakima, WA: Washington State Dept. of Ecology, 2006.

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Peterschmidt, Mark. Lower Okanogan DDT PCB: Water quality implementation plan (detailed implementation plan). Yakima, WA: Washington State Dept. of Ecology, 2006.

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Schneider, David. Lake Chelan Watershed DDT and PCB total maximum daily load: Water quality improvement report. [Olympia, Wash.]: Washington State Dept. of Ecology, 2006.

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Poulsen, Inge. Jørgen Leth og bekendelsens problem: Om nutidens selvfremstillinger med særlig fokus paa Det uperfekte menneske. Odense: Syddansk Universitetsforlag, 2009.

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Ernholtz, Jens. Sommervarme: Analyse af vejret i Danmark 1756-60 baseret paa logbøger fra vagtskibe i det vestlige Øresund. København]: Underskoven, 2014.

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United States. Federal Highway Administration., a cura di. Design & Construction Of PCC Pavements, Vol. 1:... Pub. No. FHWA-RD-98-052... U.S. DOT... Fed. Highway Admin.... March 1998. [S.l: s.n., 1998.

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Goldschmidt, Simone Ochsner. Wissensspuren: Generierung, Ordnung und Inszenierung von Wissen in Erik Pontoppidans Norges naturlige Historie 1752/53. Tübingen: A. Francke Verlag, 2012.

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The great image: The life story of Vairochana, the translator. Boston: Shambhala, 2004.

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Capitoli di libri sul tema "PCA AND DWT"

Liu, Zhicheng, e Zhijun Fang. "PCA and FLD in DWT Domain". In Transactions on Edutainment VII, 197–204. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-29050-3_18.

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Ciecierski, Konrad, Zbigniew W. Raś e Andrzej W. Przybyszewski. "Spike Sorting Based upon PCA over DWT Frequency Band Selection". In Lecture Notes in Computer Science, 154–63. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-08326-1_16.

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Sethy, Abhisek, Prashanta Kumar Patra e Deepak Ranjan Nayak. "Off-Line Handwritten Odia Character Recognition Using DWT and PCA". In Advances in Intelligent Systems and Computing, 187–95. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-6872-0_18.

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Leng, Xiaoxu, Jun Xiao e Ying Wang. "A Robust Image Zero-Watermarking Algorithm Based on DWT and PCA". In Communications in Computer and Information Science, 484–92. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-31968-6_58.

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Aow Yong, Li Yew, Mohd Shafry Mohd Rahim e Chi Wee Tan. "Prediction of Conversion to Alzheimer’s Disease Using 3D-DWT and PCA". In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 199–213. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-99197-5_16.

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Rajinikanth, V., Suresh Chandra Satapathy, Nilanjan Dey e R. Vijayarajan. "DWT-PCA Image Fusion Technique to Improve Segmentation Accuracy in Brain Tumor Analysis". In Lecture Notes in Electrical Engineering, 453–62. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-7329-8_46.

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Narayan, Yogendra, Ram Murat Singh, Lini Mathew e S. Chatterji. "Surface EMG Signal Classification Using Ensemble Algorithm, PCA and DWT for Robot Control". In Communications in Computer and Information Science, 218–30. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-3140-4_20.

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Ayesha, Sk, V. M. Manikandan e V. Masilamani. "A Combined SVD-DWT Watermarking Scheme with Multi-level Compression Using Sampling and Quantization on DCT Followed by PCA". In Advances in Intelligent Systems and Computing, 141–49. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-11933-5_16.

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Ahmed, Md Sakib, Sajib Hossain, Md Nazmul Haque, M. M. Mahbubul Syeed, D. M. Saaduzzaman, Md Hasan Maruf e A. S. M. Shihavuddin. "MRI Based Automated Detection of Brain Tumor Using DWT, GLCM, PCA, Ensemble of SVM and PNN in Sequence". In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 267–79. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-34619-4_22.

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Arora, Preeti, e Rajeev Ratan. "Development of a Novel Approach for Classification of MRI Brain Images Using DWT by Integrating PCA, KSVM and GRB Kernel". In Algorithms for Intelligent Systems, 123–38. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-6707-0_13.

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Atti di convegni sul tema "PCA AND DWT"

Patil, Jayshri P., Chhaya Nayak e Mohit Jain. "Palmprint recognition using DWT, DCT and PCA techniques". In 2015 IEEE International Conference on Computational Intelligence and Computing Research (ICCIC). IEEE, 2015. http://dx.doi.org/10.1109/iccic.2015.7435677.

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Kumar, D. R. Shashi, K. B. Raja, N. Nuthan, B. Sindhuja, P. Supriya, R. K. Chhotaray e Sabyasachi Pattnaik. "Iris Recognition Based on DWT and PCA". In 2011 International Conference on Computational Intelligence and Communication Networks (CICN). IEEE, 2011. http://dx.doi.org/10.1109/cicn.2011.102.

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Mahajan, Archana S. Badve, e Kailash J. Karande. "PCA and DWT based multimodal biometric recognition system". In 2015 International Conference on Pervasive Computing (ICPC). IEEE, 2015. http://dx.doi.org/10.1109/pervasive.2015.7087185.

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Khan, Sajid Ali, Muhammad Nazir, Nawazish Naveed e Naveed Riaz. "Efficient gender classification methodology using DWT and PCA". In 2011 IEEE 14th International Multitopic Conference (INMIC). IEEE, 2011. http://dx.doi.org/10.1109/inmic.2011.6151462.

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Nicholl, Paul, e Abbes Amira. "DWT/PCA Face Recognition using Automatic Coefficient Selection". In 4th IEEE International Symposium on Electronic Design, Test and Applications (delta 2008). IEEE, 2008. http://dx.doi.org/10.1109/delta.2008.39.

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Kaur, Sumeet, e Samandeep Kaur. "MRI denoising using non-local PCA with DWT". In 2016 Fourth International Conference on Parallel, Distributed and Grid Computing (PDGC). IEEE, 2016. http://dx.doi.org/10.1109/pdgc.2016.7913247.

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Imran, Muhammad, e Abdul Ghafoor. "A PCA-DWT-SVD based color image watermarking". In 2012 IEEE International Conference on Systems, Man and Cybernetics - SMC. IEEE, 2012. http://dx.doi.org/10.1109/icsmc.2012.6377886.

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Desale, R. P., e S. V. Verma. "Study and analysis of PCA, DCT & DWT based image fusion techniques". In 2013 International Conference on Signal Processing, Image Processing, and Pattern Recognition (ICSIPR). IEEE, 2013. http://dx.doi.org/10.1109/icsipr.2013.6497960.

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Reddy, M. Rajasekhar, P. Sai Sandeep, C. H. Mounika, J. Gopi e S. D. Suganya. "Optimized watermarking technique using PCA-DWT and log filter". In 2017 International Conference on Networks & Advances in Computational Technologies (NetACT). IEEE, 2017. http://dx.doi.org/10.1109/netact.2017.8076754.

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Kumar, Anand, e Mukesh Gupta. "Semi visible watermarking scheme based on DWT and PCA". In 2015 International Conference on Green Computing and Internet of Things (ICGCIoT). IEEE, 2015. http://dx.doi.org/10.1109/icgciot.2015.7380606.

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Rapporti di organizzazioni sul tema "PCA AND DWT"

Levisohn, Sharon, Mark Jackwood e Stanley Kleven. New Approaches for Detection of Mycoplasma iowae Infection in Turkeys. United States Department of Agriculture, febbraio 1995. http://dx.doi.org/10.32747/1995.7612834.bard.

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Mycoplasma iowae (Mi) is a pathogenic avian mycoplasma which causes mortality in turkey embryos and as such has clinical and economic significance for the turkey breeder industry. Control of Mi infection is severely hampered by lack of adequate diagnostic tests, together with resistance to most antibiotics and resilience to environment. A markedly high degree of intra-species antigenic variation also contributes to difficulties in detection and control of infection. In this project we have designed an innovative gene-based diagnostic test based on specific amplification of the 16S rRNA gene of Mi. This reaction, designed Multi-species PCR-RFLP test, also amplifies the DNA of the pathogenic avian mycoplasmas M. gallisepticum (Mg) and M. synoviae (Ms). This test detects DNA equivalent to about 300 cfu Mi or either of the other two target mycoplasmas, individually or in mixed infection. It is a quick test, applicable to a wide variety of clinical samples, such as allantoic fluid or tracheal or cloacal swab suspensions. Differential diagnosis is carried out by gel electro-phoresis of the PCR amplicon digested with selected restriction enzymes (Restriction Fragment Length Polymorphism). This can also be readily accomplished by using a simple Dot-Blot hybridization assay with digoxigenin-labeled oligonucleotide probes reacting specifically with unique Mi, Mg or Ms sequences in the PCR amplicon. The PCR/OLIGO test increased sensitivity by at least 10-fold with a capacity for rapid testing of large numbers of samples. Experimental infection trials were carried out to evaluate the diagnostic tools and to study pathogenesis of Mi infection. Field studies and experimental infection of embryonated eggs indicated both synergistic and competitive interaction of mycoplasma pathogens in mixed infection. The value of the PCR diagnostic tests for following the time course of egg transmission was shown. A workable serological test (Dot Immunobinding Assay) was also developed but there was no clear-cut evidence that infected turkeys develop an immune response. Typing of a wide spectrum of Mi field isolates by a variety of gene-based molecular techniques indicated a higher degree of genetic homogeneity than predicted on the basis of the phenotypic variability. All known strains of Mi were detected by the method developed. Together with an M. meleagridis-PCR test based on the same gene, the Multi-species PCR test is a highly valuable tool for diagnosis of pathogenic mycoplasmas in single or mixed infection. The further application of this rapid and specific test as a part of Mi and overall mycoplasma control programs will be dependent on developments in the turkey industry.

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Maxey e Barnes. L51622 The Chevron Notched Drop-Weight-Tear-Test Specimen. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), settembre 1990. http://dx.doi.org/10.55274/r0010366.

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This research is aimed at finding a new type of notch that would produce propagation data similar to that produced by the PC DWTT. High-toughness materials and materials that had previously been studied were used assuming that if the new notch worked on these materials it would be satisfactory for lower toughness materials. Several notch modifications were tried and most were no better than the standard pressed notch used in the API specimen. A search for a new type of notch for the standard drop-weight-tear-test (DWTT) specimen has been completed. This new notch specimen is to replace the precracked DWTT specimen which has been shown to predict full-scale behavior but has received-little support from pipe manufacturers. The new notch is a chevron notch causing fracture initiation to occur at a machined point located at mid-wall thicknessand about 0.2 inch below the specimen edge (i.e., at the same depth as the pressed-in notch of the standard DWTT). No precracking or other severe prestraining, which may create strain aging problems, is required to produce the specimen. A good correlation was obtained between the chevron-notched DWTT and the Charpy V-notch specimens for conventionally rolled steels; this correlation effectively ties the chevron notched data to past fracture research data and to published correlations thatdescribe fracture in terms of Charpy upper-shelf energy. A procedure is included for preparing and conducting the Chevron notched DWTT.

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Frank, Olof, Jenny Casey Eriksson e Tomas Lundén. Open Access vid SLU 2012-2014. SLU-biblioteket, Sveriges lantbruksuniversitet, 2016. http://dx.doi.org/10.54612/a.1d4j3sb71t.

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Open access (OA) är ett sätt att göra forskningsresultat fritt tillgängliga över internet och har på relativt kort tid blivit en global företeelse som har förändrat hur forskare publicerar sina resultat. Syftet med detta arbete har varit att undersöka metoder för att kunna mäta Sveriges lantbruksuniversitets (SLU) OA-publicering, liksom att ta fram siffror över hur stor andel av SLU:s vetenskapliga artiklar som publiceras OA. Utöver detta syfte, så har vi även undersökt hur OA-andelen fördelar sig mellan olika typer av OA (s.k. guld, grön och hybrid), vilka tidskrifter SLU:s forskare mest frekvent publicerar i, samt hur andelen OA ser ut på SLU:s institutioner. Mätningen har begränsats till refereegranskade tidskriftsartiklar publicerade under åren 2012-2014. Publikationsdata hämtades ur publikationsdatabasen SLUpub. För artiklar som har publicerats i OA-tidskrifter (guld OA) har SLUpub-datan samkörts med data från Directory of Open Access Journals (DOAJ). För parallellpublicerade artiklar (grön OA) har vi räknat antal artiklar i Epsilon, SLU:s öppna arkiv. För OA-artiklar publicerade i prenumerationstidskrifter (hybrid OA) genomfördes en stickprovskontroll utifrån ett randomiserat urval av hela underlaget. Resultat: andelen artiklar för hela SLU under perioden 2012-2014 var 4543. Av dessa var 790 tillgängliga guld OA vilket innebär 17,3 procent av den totala publiceringen. Trenden är uppåtgående då OA-andelen för 2012 var 16,3 procent och för 2014 19,2 procent. Andelen gröna OA-artiklar som återfanns i Epsilon och som inte kunde avskrivas som guld OA uppgick till 175 st. Dessa publikationer utgör 3,8 procent av det totala antalet publicerade artiklar under perioden. Stickprovet av det randomiserade urvalet visade på en andel hybrid OA på 16,5 procent av den totala artikelpubliceringen, vilket endast ska ses som en indikation. I rapporten redovisas även de tidskrifter som SLU-forskare publicerat mest i under perioden 2012-2014, där PLoS ONE med god marginal innehar förstaplatsen. Andelen OA på institutionsnivå redovisar endast resultat för guld OA, inte grön eller hybrid OA pga. att strukturerad data för dessa är resurskrävande att få fram. I slutsatserna diskuteras att SLU publicerar en relativt låg andel grön OA och att det även finns tämligen stora skillnader mellan institutionernas OA-publicering. Rapporten ger rekommendationer för SLU-bibliotekets vidare arbete, såsom att ta fram en förnyad strategi för utformning av stöd till grön OA och till institutioner som idag generellt publicerar OA i liten utsträckning.

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Sink, Ken, Shamay Izhar e Abraham Nachmias. Asymmetric Somatic Hybridization: Developing a Gene Transfer System for Solanaceous Vegetable Crops. United States Department of Agriculture, febbraio 1996. http://dx.doi.org/10.32747/1996.7613010.bard.

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Highly asymmetric somatic hybrid plants were obtained by PEG/DMSO fusion of gamma irradiated (100, 250, 7500 and 1000 Gy) protoplasts of a (KmR-) interspecific hybrid Lycopersicon esculentum x L. pennellii (EP) with protoplasts of eggplant (E). Somatic hybrid calli were selected based on kanamycin resistance and verified by PCR of the NptII gene, RAPD's and Southern's using potato rDNA pTHG2 probes. Flow cytometry indicated all hybrid calli that did not regenerate shoots were 5-9n. Three asymmetric plants regenerated only from callus close to 4n and such calli oly occurred when EP received 100 Gy. The asymmetric plants had eggplant morphology and regenerated from one hybrid callus with 6.29 average size tomato chromosomes. Limited amounts of EP DNA were found in the three somatic hybrid plants H18-1 to -3 by dot-blot hybridization with probe pTHG2, to be equivalent to 6.23, 5.41, and 5.95 % EP, respectively. RFLP analysis of Lycopersicon esculentum and L. pennellii specific chromosomes revealed that only fragments of 8 to 10 out of the 24 EP chromosomes are present in the asymmetric plants. Transgenic plants 2-3, 2-4 and 10-3 were found resistant to verticillium; suggesting successful transfer of the Ve complex from S. torvum to eggplant.

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Ørvig, Kjersti. Velferdsteknologi: En studie av holdninger/oppfatninger om bruk av velferdsteknologi for unge mennesker med nedsatt funksjonsevne i eller på vei til egen bolig. University of Stavanger, ottobre 2014. http://dx.doi.org/10.31265/usps.225.

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Dette er en rapport som bygger på en sosiologisk studie av pårørende og brukeres oppfatninger i tilknytning til en fremtidig innføring av velferdsteknologi i bolig for unge mennesker med nedsatt funksjonsevne. Hovedhensikten med studien er å dokumentere og diskutere muligheter og begrensninger ved velferdsteknologisk understøttelse i bolig slik den enkelte bruker/pårørende oppfatter dette. Målgruppen for studien er unge voksne (18-29 år) med nedsatt funksjonsevne som enten bor i egen bolig eller er på vei til egen bolig. Dette er en gruppe unge mennesker som har vært og fremdeles er lite synlig i debatten rundt innføring av velferdsteknologi som i all hovedsak har vært rettet mot eldre og/eller kronisk syke. Min analyse fokuseres rundt fem hovedtema: 1) kunnskaps- og kompetanseforutsetninger, 2) teknologiske utfordringer, 3) ny teknologi og det menneskelige aspektet, 4) fordeler og ulemper med moderne teknologi og 5) de blandede erfaringene med Nav. Et overordnet spørsmål i rapporten er hvordan velferdsteknologi kan bidra til inkludering for unge mennesker med funksjonsnedsettelser. Det ble anvendt en kvalitativ metode i studiet med bruk av semi-strukturerte intervjuer. Utvalget av informanter i målgruppen ble strategisk valgt i samsvar med prosjektets forskningsspørsmål. Dette omfattet unge voksne brukere (18-29 år) med nedsatt kognitiv og/eller fysisk funksjon samt pårørende til brukere i denne aldersgruppen. Et annet kriterium var at brukerne enten bodde i egen bolig eller var på vei til egen bolig de nærmeste årene. Totalt 13 informanter deltok, herav 5 brukere og 8 pårørende. 3 av de 5 brukerne som deltok i undersøkelsen bodde i egen bolig. Av det totale antallet brukere som var representert i undersøkelsen bodde 5 av brukere i egen bolig. Intervjuene ble gjennomført i fem kommuner i Rogaland høsten 2013 og vår 2014. Hvert intervju ble tatt opp på bånd og transkribert. Informantene ble rekruttert via to ulike interesseorganisasjoner. Funn Et hovedfunn viser at det er et stort behov for informasjon og kunnskap om hva velferdsteknologi omfatter og hva som er forskjellen på velferdsteknologi og mer tradisjonelle hjelpemidler. Samtidig indikerer funn at noen av brukerne og flere av de pårørende har kunnskap og kompetanse i bruk av smarttelefoner, pc, nettbrett etc. Dette er kunnskap som kan videreutvikles til bruk av ulike typer mer spesialtilpassede kommunikasjonsløsninger. Manglende tilgjengelig informasjon kan bidra til at det skapes ambivalente holdninger til ny teknologi. Dette er knyttet til oppfatninger om overvåkning og kontroll. En utfordring som kommer til uttrykk blant pårørende informantene i tilknytning til velferdsteknologi, er situasjoner hvor pårørende/bruker mangler digital kompetanse. Pårørende uttrykker i den sammenheng bekymring for ekskludering av en gruppe brukere som ikke får tilgang til moderne teknologi fordi det ikke søkes om dette. Resultatet kan bli at det ikke søkes om velferdsteknologiske løsninger fordi pårørende/sosiale nettverk ikke selv har kompetanse eller ikke bryr seg om å erverve denne kompetansen. Brukere som er avhengig av pårørende/sosiale nettverk for å håndtere teknologien kan bli særlig sårbare i denne sammenhengen. Et viktig funn som kommer frem her er at det må opprettes en type support gjennom Nav. Denne type support må være tilgjengelig i situasjoner hvor teknologien ikke fungerer som den skal eller ved andre behov for assistanse. Funn peker og på behovet for å sikre opplæring av kommunalt ansatte som mangler grunnleggende kompetanse om velferdsteknologi. Dette er i samsvar med flere fagrapporter på feltet. Et sentralt funn i undersøkelsen omfatter frykten for at velferdsteknologi skal erstatte menneskelig kontakt. Dette er i samsvar med «motstanderne» i debatten rundt innføring av moderne teknologi. Flere av informantene uttrykte og stor skepsis til ulike type overvåkningsutstyr av tjenestemottaker. Møtet med Nav/hjelpemidler viser at mange av mine informanter har svært blandede erfaringer i forhold til informasjon om moderne velferdsteknologiske løsninger (smarthusløsninger) samt få innvilget søknader til mer tradisjonelle hjelpemidler. Ingen av informantene har på noe tidspunkt fått tilbud om smarthusløsninger i bolig. Dette kan skyldes manglende kompetanse og kunnskap om velferdsteknologiske løsninger fra kommunens side samt representere en flaskehals i forhold til implementering av velferdsteknologi. En annen grunn kan være lav innkjøpskompetanse og svak økonomi. Bruk av ulike moderne teknologiske løsninger kan bidra til at mennesker med nedsatt funksjonsevne kan få en større grad av selvstendighet og kunne delta på flere av livets områder. En viktig forutsetning i denne sammenheng omfatter tilrettelegging og opplæring av funksjonshemmede, pårørende og sosiale nettverk samt aktører som har ansvar for tilrettelegging.

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Le financement à des fins précises : Une étude pour informer le soutien des bailleurs de fonds aux droits des communautés autochtones et locales, au climat et à la conservation. Rights and Resources Initiative, settembre 2022. http://dx.doi.org/10.53892/toxe1192.

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Le présent rapport évalue les financements octroyés par les bailleurs de fonds à la tenure et à la conservation des PA et des CL entre 2011 et 2020 afin de tirer les leçons des tendances historiques et d’exposer les occasions clés d’améliorer l’efficacité de ces financements au cours des cinq années à venir. Il propose que les financements versés par les bailleurs de fonds soient plus adaptés aux objectifs — autrement dit que les financements liés au climat, à la conservation et aux droits soient canalisés de manières pertinentes et appropriées pour les PA et les CL (tout en veillant à ce que les initiatives de financement soient menées par les organisations de PA et de CL), en plus d’être souples, à long terme, non discriminatoires en matière de genre, opportuns et accessibles, et mutuellement redevables.

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