Log in

Relevant bibliographies by topics / Digital techniques. eng / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Digital techniques. eng.

Dissertations / Theses on the topic 'Digital techniques. eng'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 20 dissertations / theses for your research on the topic 'Digital techniques. eng.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Casaca, Wallace Correa de Oliveira. "Restauração de imagens digitais com texturas utilizando técnicas de decomposição e equações diferenciais parciais /." São José do Rio Preto : [s.n.], 2010. http://hdl.handle.net/11449/94247.

Full text

Abstract:

Orientador: Maurílio Boaventura<br>Banca: Evanildo Castro Silva Júnior<br>Banca: Alagacone Sri Ranga<br>Resumo: Neste trabalho propomos quatro novas abordagens para tratar o problema de restauração de imagens reais contendo texturas sob a perspectiva dos temas: reconstrução de regiões danificadas, remoção de objetos, e eliminação de ruídos. As duas primeiras abor dagens são designadas para recompor partes perdias ou remover objetos de uma imagem real a partir de formulações envolvendo decomposiçãode imagens e inpainting por exem- plar, enquanto que as duas últimas são empregadas para remover r

APA, Harvard, Vancouver, ISO, and other styles

2

Oliveira, Vlademir de Jesus Silva. "Desenvolvimento de um sintetizador de freqüência de baixo custo em tecnologia CMOS /." Ilha Solteira : [s.n.], 2009. http://hdl.handle.net/11449/100280.

Full text

Abstract:

Orientador: Nobuo Oki<br>Banca: Suely Cunha Amaro Mantovani<br>Banca: Jozué Vieira Filho<br>Banca: Marcelo Arturo Jara Perez<br>Banca: Paulo Augusto Dal fabbro<br>Resumo: Nesta tese, propõe-se um sintetizador de freqüência baseado em phase locked loops (PLL) usando uma arquitetura que utiliza um dual-path loop filter, constituído de componentes passivos e um integrador digital. A proposta é empregar técnicas digitais, para reduzir o custo da implementação do sintetizador de freqüência, e flexibilizar o projeto do loop filter, para possibilitar que a arquitetura opere em uma faixa de freqüência

APA, Harvard, Vancouver, ISO, and other styles

3

Ferreira, Castellane Silva. "Sistema de gerenciamento automático de reatores eletrônicos com ajuste do nível de luminosidade para múltiplas lâmpadas fluorescentes /." Ilha Solteira : [s.n.], 2008. http://hdl.handle.net/11449/87118.

Full text

Abstract:

Resumo: Este trabalho trata do desenvolvimento e implementação de um sistema de iluminação fluorescente com gerenciamento automático baseado em reatores eletrônicos aplicados a múltiplas lâmpadas fluorescentes. O foco desta pesquisa é direcionado ao desenvolvimento de uma plataforma automática de gerenciamento e supervisão, propiciando o controle de luminosidade, acionamento remoto e também acionamentos programáveis de acordo com o expediente de trabalho do local e condições de iluminação natural do ambiente, além de prover aumento de vida útil das lâmpadas fluorescentes, em função de protocol

APA, Harvard, Vancouver, ISO, and other styles

4

Assis, Afonso Celso Souza de. "Estudo da viabilidade do emprego da técnica de subtração radiográfica digital em radiografias periapicais com registro a posteriori /." São José dos Campos : [s.n.], 2010. http://hdl.handle.net/11449/98003.

Full text

Abstract:

Orientador: Luiz Cesar de Moraes<br>Banca: Pedro Luiz de Carvalho<br>Banca: Cristiane Yumi Koga Ito<br>Resumo: Apesar de ser uma técnica limitada, a subtração digital é utilizada na Odontologia. A adição do computador e seus algoritmos para equalização de contraste e também correção geométrica, tornou possível a aplicação da subtração radiográfica digital (SRD), utilizando radiografias intrabucais. Neste estudo foi avaliada a viabilidade da utilização da subtração radiográfica digital pelo programa Regeemy - Image Registration and Mosaicking v.0.2.43-RCB (DPI-INPE, São José dos Campos, SP, Bra

APA, Harvard, Vancouver, ISO, and other styles

5

Okai-Tettey, Harold A. "High speed end-to-end connection management in a bridged IEEE 1394 network of professional audio devices." Thesis, Rhodes University, 2006. http://hdl.handle.net/10962/d1006638.

Full text

Abstract:

A number of companies have developed a variety of network approaches to the transfer of audio and MIDI data. By doing this, they have addressed the configuration complications that were present when using direct patching for analogue audio, digital audio, word clock, and control connections. Along with their approaches, controlling software, usually running on a PC, is used to set up and manage audio routings from the outputs to the inputs of devices. However one of the advantages of direct patching is the conceptual simplicity it provides for a user in connecting plugs of devices, the ability

APA, Harvard, Vancouver, ISO, and other styles

6

Esteller, Rosana. "Detection of seizure onset in epileptic patients from intracranial EEG signals." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/15620.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Bayne, Ethan. "Accelerating digital forensic searching through GPGPU parallel processing techniques." Thesis, Abertay University, 2017. https://rke.abertay.ac.uk/en/studentTheses/702de12a-e10b-4daa-8baf-c2c57a501240.

Full text

Abstract:

Background: String searching within a large corpus of data is a critical component of digital forensic (DF) analysis techniques such as file carving. The continuing increase in capacity of consumer storage devices requires similar improvements to the performance of string searching techniques employed by DF tools used to analyse forensic data. As string searching is a trivially-parallelisable problem, general purpose graphic processing unit (GPGPU) approaches are a natural fit. Currently, only some of the research in employing GPGPU programming has been transferred to the field of DF, of which

APA, Harvard, Vancouver, ISO, and other styles

8

Darrington, John Mark. "Real time extraction of ECG fiducial points using shape based detection." University of Western Australia. School of Computer Science and Software Engineering, 2009. http://theses.library.uwa.edu.au/adt-WU2009.0152.

Full text

Abstract:

The electrocardiograph (ECG) is a common clinical and biomedical research tool used for both diagnostic and prognostic purposes. In recent years computer aided analysis of the ECG has enabled cardiographic patterns to be found which were hitherto not apparent. Many of these analyses rely upon the segmentation of the ECG into separate time delimited waveforms. The instants delimiting these segments are called the

APA, Harvard, Vancouver, ISO, and other styles

9

Kiang, Kai-Ming Mechanical &amp Manufacturing Engineering Faculty of Engineering UNSW. "Natural feature extraction as a front end for simultaneous localization and mapping." Awarded by:University of New South Wales. School of Mechanical and Manufacturing Engineering, 2006. http://handle.unsw.edu.au/1959.4/26960.

Full text

Abstract:

This thesis is concerned with algorithms for finding natural features that are then used for simultaneous localisation and mapping, commonly known as SLAM in navigation theory. The task involves capturing raw sensory inputs, extracting features from these inputs and using the features for mapping and localising during navigation. The ability to extract natural features allows automatons such as robots to be sent to environments where no human beings have previously explored working in a way that is similar to how human beings understand and remember where they have been. In extracting natural

APA, Harvard, Vancouver, ISO, and other styles

10

Janjarasjitt, Suparerk. "A NEW QRS DETECTION AND ECG SIGNAL EXTRACTION TECHNIQUE FOR FETAL MONITORING." Case Western Reserve University School of Graduate Studies / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=case1144263231.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Rodriguez, Gutierrez Sergio. "FPGA based digital electromagnetic sensing technique for detection of pit corrosion." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/fpga-based-digital-electromagnetic-sensingtechnique-for-detection-of-pit-corrosion(7e9abd26-7658-42da-b4a3-04a1a1f302a4).html.

Full text

Abstract:

This thesis describes the development of an eddy current instrument and its application in detecting early-stage pitting corrosion. Eddy current testing has previously been used in Non-Destructive Testing (NDT) applications detecting large defects, like cracks. However, the challenge of detecting corrosion pits of less than 1mm³ remains unaddressed. This research involved the design of a Field Programmable Gate Array (FPGA)-based eddy current instrument, and the design and modelling of a novel differential electromagnetic sensor. The FPGA provided accurate synchronisation among the major elect

APA, Harvard, Vancouver, ISO, and other styles

12

Barton, Antony James. "Signal processing techniques for data reduction and event recognition in cough counting." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/signal-processing-techniques-for-data-reduction-and-event-recognition-in-cough-counting(dc73495a-35b0-4d17-a6f8-cc2f88008659).html.

Full text

Abstract:

This thesis presents novel techniques for the reduction of audio recordings and signal processing techniques as part of cough recognition. Evidence collected shows the reduction technique to be effective and the recognition techniques to give consistent performance across different patients. Cough is one of the commonest symptoms reported by patients to GPs. Despite this, it remains a significantly unmet medical need. At present, there exists no practical and validated technique for assessing the efficacy of therapies to treat cough on a large enough scale. Research that is presently undertake

APA, Harvard, Vancouver, ISO, and other styles

13

Illing, Diane Patricia. "Orientation and recognition of both noisy and partially occluded 3-D objects from single 2-D images." Thesis, University of South Wales, 1990. https://pure.southwales.ac.uk/en/studentthesis/orientation-and-recognition-of-both-noisy-and-partially-occluded-3d-objects-from-single-2d-images(c849d6e3-24e4-4462-9afb-c608120a4019).html.

Full text

Abstract:

This work is concerned with the problem of 3-D object recognition and orientation determination from single 2-D image frames in which objects may be noisy, partially occluded or both. Global descriptors of shape such as moments and Fourier descriptors rely on the whole shape being present. If part of a shape is missing then all of the descriptors will be affected. Consequently, such approaches are not suitable when objects are partially occluded, as results presented here show. Local methods of describing shape, where distortion of part of the object affects only the descriptors associated wit

APA, Harvard, Vancouver, ISO, and other styles

14

Dias, Philipe Ambrozio. "In situ microscopy for analysis of filamentous bacteria: optics end image evalaution." Universidade Tecnológica Federal do Paraná, 2016. http://repositorio.utfpr.edu.br/jspui/handle/1/1999.

Full text

Abstract:

CAPES; CNPq<br>In the activated sludge process, problems of foaming and filamentous bulking can occur due to overgrowth of certain filamentous bacteria. Nowadays, these microorganisms are typically monitored by means of light microscopy combined with staining techniques. As drawbacks, these methods are susceptible to human errors, subjectivity and limited by the use of discontinuous microscopy. The present project aims the application of an in situ microscope (ISM) for continuous monitoring of filamentous bacteria, providing real-time examination, automated analysis and elimination of sampling

APA, Harvard, Vancouver, ISO, and other styles

15

Moribe, Sergio. "Desenvolvimento de um sistema de monitoramento de sinais de ECG e temperatura utilizando dispositivos móveis." Universidade Tecnológica Federal do Paraná, 2016. http://repositorio.utfpr.edu.br/jspui/handle/1/1939.

Full text

Abstract:

CAPES; CNPq; Fundação Araucária<br>Este trabalho teve por objetivo o desenvolvimento de um sistema de monitoramento de sinais de ECG e temperatura, com o propósito de dar mobilidade a pessoas que necessitam de monitoramento contínuo de alguns sinais fisiológicos, tais como pessoas idosas e/ou pessoas com deficiências cardíacas ou até mesmo para atletas que desejam melhorar seu desempenho através do monitoramento de seu condicionamento físico. Foram realizadas pesquisas dos equipamentos similares que existem atualmente no mercado e que estão sendo desenvolvidos para um embasamento técnico do pr

APA, Harvard, Vancouver, ISO, and other styles

16

GUO, YUAN-JIE, and 郭元傑. "A Wavelet-Based Digital Watermarking Technique for ECG Signals." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/09223596464019777413.

Full text

Abstract:

碩士<br>東海大學<br>應用數學系<br>101<br>In nowadays society, we pay much attention to a variety of copyright protection issues and the emphasis on personal information. Digital watermarking technology is the most widely used encryption technology in the field of multi-media and medical information. In this thesis, we redesign a wavelet-based digital watermark to Electrocardiogram (ECG) signals to achieve the purpose of protection of patient rights. Certain hidden data for personnel identification are embedded into specified low-frequency coefficients of its wavelet transform according to different quan

APA, Harvard, Vancouver, ISO, and other styles

17

"Photo enhancement." 2014. http://repository.lib.cuhk.edu.hk/en/item/cuhk-1290676.

Full text

Abstract:

Photo enhancement is an important and practical problem in computer vision. In real-word applications, there are massive needs for photo quality enhancement. Image cropping and image color enhancement are two common operations used to improve the visual quality of photographs. By learning from human examples, we propose automatic photo enhancement method which implements these two fundamental operations.<br>For image cropping, we present an automatic cropping technique that accounts for the two primary considerations of people when they crop: removal of distracting content, and enhancement of

APA, Harvard, Vancouver, ISO, and other styles

18

Hsu, Pei-Yu, and 徐佩妤. "An All-Digital ADC with Dynamic Sampling Technique for ECG Acquisition in Mobile Healthcare Applications." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/76865519904756987969.

Full text

Abstract:

碩士<br>國立交通大學<br>電子研究所<br>101<br>Heart attack becomes the top cause of death in the U.S. in 2011. The preventive medicine of the heart disease becomes more and more important. To reduce the effort for people going to the hospital, the mobile healthcare device is applied to monitor the electrocardiogram (ECG) signal. Here we design a VCO-based ADC for the ECG acquisition circuit in mobile healthcare applications. The VCO-based ADC has high area efficiency and high integration ability with the digital circuit which are suitable for the mobile device. And also benefits from the technology scaling.

APA, Harvard, Vancouver, ISO, and other styles

19

"Novel Digital Signal Processing Techniques for Performance Monitoring in Optical Orthogonal Frequency Division Multiplexing Systems." 2016. http://repository.lib.cuhk.edu.hk/en/item/cuhk-1292192.

Full text

Abstract:

根據最近的報告，整個互聯網的流量在2016年將達到1.1澤字節，並且保持23個百分點的年增長率。這將導致無論是在骨幹網絡還是接入網絡，都將重度依賴光纖傳輸網絡。為了支持這樣巨大體量的數據傳輸，研究者和工程師都在努力提升現有光纖傳輸鏈路的頻譜利用效率。這可以經由使用高階調製格式，減少信道之間的間距，和新的維度上的複用技術來實現。與此同時，光網絡自身的運轉也在逐漸從固定的模式向更加彈性的方式轉變，這是由於光網絡中的連接數量一直保持著指數級的增長。光正交頻分複用技術能夠同時支持上述的高頻譜利用效率和彈性的網絡運轉模式，因此成為一項非常有前途的，支持下一代軟件定義光網絡的候選方案。<br>在這篇論文中，我們主要研究使用新穎的數字信號處理技術在光正交頻分複用系統中進行光性能監控。和在傳統的光網絡中進行光性能監控的關注點不同，在光正交頻分複用系統實現的彈性光網絡中進行光性能監控并不局限于監控光纖的損傷，比如光纖的色散和偏振模式色散。新的監測項目，比如激光器的線寬，以及在光網絡中傳輸的信號調製格式，都需要被監控，以便幫助網絡的控制層來實現更智能的動態交換。具體來說，我們研究了在光正交頻分複用系統中的偏振模式色散的監控，激光器相位噪聲的估計和補償，以及調製格式的識別。<br>在第一項研究中，我們提出了一個針對直接檢測的光正交頻分複用系統的低成本偏振模式色散監控方案。在這個方案中，只需採用一個低成本

APA, Harvard, Vancouver, ISO, and other styles

20

Chaturvedi, Vikram. "Low Power and Low Area Techniques for Neural Recording Application." Thesis, 2012. http://hdl.handle.net/2005/3167.

Full text

Abstract:

Chronic recording of neural signals is indispensable in designing efficient brain machine interfaces and to elucidate human neurophysiology. The advent of multi-channel micro-electrode arrays has driven the need for electronic store cord neural signals from many neurons. The continuous increase in demand of data from more number of neurons is challenging for the design of an efficient neural recording frontend(NRFE). Power consumption per channel and data rate minimization are two key problems which need to be addressed by next generation of neural recording systems. Area consumption per chann

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!