Global ETD Search

1	Esteganografia em vídeos comprimidos MPEG-4 / Steganography in MPEG-4 videos Carvalho, Diego Fiori de 03 December 2008 (has links) A esteganografia em vídeos digitais possibilita o ocultamento de um grande volume de informações quando comparada a técnicas em imagens. Contudo, esta tarefa não é trivial quando aplicada a vídeos comprimidos, pois a inserção de informações ocultas pode adicionar ruído dificultando a perfeita recuperação das mesmas durante a decodificação. Este trabalho apresenta uma técnica para esteganografia em vídeos comprimidos, denominada MP4Stego, a qual explora estruturas e tecnologias do padrão de vídeo MPEG-4 de modo a proceder recuperação de informações sem perda e apresentar maior capacidade de inserção de dados ocultos. Entre os benefícios da técnica estão: A capacidade de ocultamento de grande volume de dados; a capacidade de reprodução do vídeo contendo dados ocultos em players não especializados (ajudando a dar a ilusão de que se trata de um vídeo comum), sua imunidade, até o momento, as técnicas de esteganálise / Digital video steganography makes possible to hide higher volumes of information than the broadly used image steganography techniques. However, apply steganography to compressed digital videos is not a trivial task because the information hiding process may add noise to the original data. In this way, during the video decoding, the recovered hidden information is not an exact copy of the original data. This work presents a new steganographic technique, called MP4Stego, which explores new video structures of the MPEG-4 standard in order to recover hidden data without loss and in order to provide higher capacity of hidden data insertion. Some benefits of the MP4Stego technique are: to hide high volumes of data; to playback steganographyed videos by the means of non specialized players (this helps users to think that it is a regular video); so far, its immunity to stegoanalysis techniques Compressão Compression Esteganografia Integraty Integridade MPEG-4 MPEG-4 MPEGLets MPEGLets Stenography
2	Esteganografia em vídeos comprimidos MPEG-4 / Steganography in MPEG-4 videos Diego Fiori de Carvalho 03 December 2008 (has links) A esteganografia em vídeos digitais possibilita o ocultamento de um grande volume de informações quando comparada a técnicas em imagens. Contudo, esta tarefa não é trivial quando aplicada a vídeos comprimidos, pois a inserção de informações ocultas pode adicionar ruído dificultando a perfeita recuperação das mesmas durante a decodificação. Este trabalho apresenta uma técnica para esteganografia em vídeos comprimidos, denominada MP4Stego, a qual explora estruturas e tecnologias do padrão de vídeo MPEG-4 de modo a proceder recuperação de informações sem perda e apresentar maior capacidade de inserção de dados ocultos. Entre os benefícios da técnica estão: A capacidade de ocultamento de grande volume de dados; a capacidade de reprodução do vídeo contendo dados ocultos em players não especializados (ajudando a dar a ilusão de que se trata de um vídeo comum), sua imunidade, até o momento, as técnicas de esteganálise / Digital video steganography makes possible to hide higher volumes of information than the broadly used image steganography techniques. However, apply steganography to compressed digital videos is not a trivial task because the information hiding process may add noise to the original data. In this way, during the video decoding, the recovered hidden information is not an exact copy of the original data. This work presents a new steganographic technique, called MP4Stego, which explores new video structures of the MPEG-4 standard in order to recover hidden data without loss and in order to provide higher capacity of hidden data insertion. Some benefits of the MP4Stego technique are: to hide high volumes of data; to playback steganographyed videos by the means of non specialized players (this helps users to think that it is a regular video); so far, its immunity to stegoanalysis techniques Compressão Esteganografia Integridade MPEG-4 MPEGLets Compression Integraty MPEG-4 MPEGLets Stenography
3	A Comparative Study of Dallas Employment Requisites for Stenographers and Secretarial Qualifications of Students at Forest Avenue High School Fetterman, Ruth Evelyn January 1946 (has links) The problem in this study has a three-fold purpose: to learn the likenesses and differences of the small and large business offices of Dallas, Texas, in regard to their employment requirements for the beginning stenographer; to determine to what extent the average Dallas high school graduate shows the characteristics that are requisite for secretarial success; and to evaluate the learnings of secretarial students in Forest Avenue High School, Dallas, Texas, in view of these findings. stenography business education High School Stenographers -- Texas -- Dallas.
4	An Experimental Study of Personality Development in the Stenography Class of the Edinburg High School Moore, Phelma Newton January 1948 (has links) The purpose of this study is (1) to make a survey of all personality training procedures in an attempt to adapt those methods to the instructional problems of schools having a large Latin-American enrollment, and (2) to correlate personality development with the study of stenography and job finding by giving it specific emphasis in such a course. personality training stenography Latin-American students high school
5	Writing With the Grain: A Multitextual Analysis of Kaidan Botandoro Wood, William D 01 January 2011 (has links) (PDF) As a text Botandōrō demonstrates bibliographic codes that straddle the border between modern and pre-modern literature. Wakabayashi would present his work as the fruit of his technique of ‘photographing language’ that, by extension, would provide closer and more direct access to the interiority of “author.” In his prologue he presented his shorthand method as a technique that would come to represent the new standard of modern writing. As they created a new system for transcribing language, stenographers were wrestling with the philosophical nature and limitations of language in spoken and written form, and their discoveries and accomplishments would provide a framework for future authors during a highly transformative period in the history of Japanese literature, whether intentional or not. By focusing on these paratextual elements in Botandōrō in the context of the tale’s intertextual construction we find that it is best viewed as a text that exhibits aspects of modern and pre-modern literature in its presentation as a material object, the claims it makes for sokki as a modern writing technique, and its negotiations with the idea of authorship. rakugo encho sanyutei kaidan stenography meiji Classical Literature and Philology Comparative Literature East Asian Languages and Societies Other Languages, Societies, and Cultures Rhetoric
6	Formy zadávání a zpracování textových dat a informací v podnikových IS - trendy a aktuální praxe / Forms of text data input and processing in business information systems - trends and current practices Válková, Jana January 2011 (has links) This thesis introduces readers to the basic types of the text and information inputs and processing to the computer. Thesis also includes historical contexts, current trends and future perspective of computer data input technologies and their use in practice. The first part of the thesis is a summary of a particular forms of entering and processing of the text data and information. The following part presents technological trends on the market concentrated on the automatic speech recognition systems along with the possibilities of their application in the business sphere. The rest of the thesis consists of a survey between Czech IT companies and based on it's results comes a suggestion of which technologies should be used as a part of the information systems.
7	Towards a Language Model for Stenography : A Proof of Concept Langstraat, Naomi Johanna January 2022 (has links) The availability of the stenographic manuscripts of Astrid Lindgren have sparked an interest in the creation of a language model for stenography. By its very nature stenography is low-resource and the unavailability of data requires a tool for using normal data. The tool presented in this thesis is to create stenographic data from manipulating orthographic data. Stenographic data is distinct from orthographic data through three different types manipulations that can be carried out. Firstly stenography is based on a phonetic version of language, secondly it used its own alphabet that is distinct from normal orthographic data, and thirdly it used several techniques to compress the data. The first type of manipulation is done by using a grapheme-to-phoneme converter. The second type is done by using an orthographic representation of a stenographic alphabet. The third type of manipulation is done by manipulating based on subword level, word level and phrase level. With these manipulations different datasets are created with different combinations of these manipulations. Results are measured for both perplexity on a GPT-2 language model and for compression rate on the different datasets. These results show a general decrease of perplexity scores and a slight compression rate across the board. We see that the lower perplexity scores are possibly due to the growth of ambiguity. stenography language model GPT-2 GPT grapheme-to-phoneme G2P low-resource perplexity compression
8	Art as Method: Complicating Tales of Visual Stenography and Implications for Urban Education and Research jones, vanessa michelle January 2012 (has links) No description available. Art Education African Americans Black Studies Cultural Anthropology Curriculum Development Divinity Education Education Policy Educational Theory Fine Arts Social Research PAR critical theory indigenous paradigm art social justice art and activism creativity alternate realities knowledge construction visual stenography urban education Black education Black artists Blask history

Search results