Relevant bibliographies by topics / DFT/ DTFT

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'DFT/ DTFT'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'DFT/ DTFT.'

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.

Journal articles on the topic "DFT/ DTFT"

1

Astharini, Dwi, Tsaura Aulia, Putri Wulandari, Rahmat Alamtaha, and Rifqy Afisha. "GUI Design for Comparative Output Signal DFT and DTFT with LabVIEW." INSIST 4, no. 1 (April 1, 2019): 210. http://dx.doi.org/10.23960/ins.v4i1.210.

Full text
Abstract:
An application GUI (Graphical User Interface) is designed as a software simulation to compare the output signal of DFT and DTFT. DFT (Discrete Fourier Transform) and DTFT (Discrete Time Fourier Transform) are part of the digital signal processing. Digital signal processing is an analog signal processing method uses a mathematical technique to perform a transformation or retrieving information in digital form. One of the benefits of digital signal processing is to facilitate the representation of the signal, because the signal in digital form will be more visible, easily processed and has high accuracy. This GUI application designed using LabVIEW from National Instruments. LabVIEW is a software graphical programming or a block diagram. LabVIEW program known as VI or Virtual Instrument. The input signal in this application is a square signal
APA, Harvard, Vancouver, ISO, and other styles
2

Fischer, Jens. "Four Particular Cases of the Fourier Transform." Mathematics 6, no. 12 (December 18, 2018): 335. http://dx.doi.org/10.3390/math6120335.

Full text
Abstract:
In previous studies we used Laurent Schwartz’ theory of distributions to rigorously introduce discretizations and periodizations on tempered distributions. These results are now used in this study to derive a validity statement for four interlinking formulas. They are variants of Poisson’s Summation Formula and connect four commonly defined Fourier transforms to one another, the integral Fourier transform, the Discrete-Time Fourier Transform (DTFT), the Discrete Fourier Transform (DFT) and the integral Fourier transform for periodic functions—used to analyze Fourier series. We prove that under certain conditions, these four Fourier transforms become particular cases of the Fourier transform in the tempered distributions sense. We first derive four interlinking formulas from four definitions of the Fourier transform pure symbolically. Then, using our previous results, we specify three conditions for the validity of these formulas in the tempered distributions sense.
APA, Harvard, Vancouver, ISO, and other styles
3

Schneeweis, Arno, Andreas Neidlinger, Guido J. Reiss, Walter Frank, Katja Heinze, and Thomas J. J. Müller. "Radical cation and dication of a 4H-dithieno[2,3-b:3′,2′-e][1,4]-thiazine." Organic Chemistry Frontiers 4, no. 5 (2017): 839–46. http://dx.doi.org/10.1039/c7qo00188f.

Full text
Abstract:
4H-Dithieno[2,3-b:3’,2’-e][1,4]-thiazine (DTT), and its radical cation and dication were synthesized, characterized (EPR spectroscopy and spectroelectrochemistry) and interpreted (DFT and TD DFT calculations).
APA, Harvard, Vancouver, ISO, and other styles
4

Setyono, Andik, and De Rosal Ignatius Moses Setiadi. "Image watermarking using discrete wavelet-tchebichef transform." Indonesian Journal of Electrical Engineering and Computer Science 16, no. 3 (December 1, 2019): 1416. http://dx.doi.org/10.11591/ijeecs.v16.i3.pp1416-1423.

Full text
Abstract:
<span>Image watermarking is one of the most popular techniques for authenticating copyright on the digital image. Many research on image watermarking has proved that the joint of Discrete Cosine Transform (DCT) and Discrete Wavelet Transform (DWT) combinations can improve both imperceptibility and robustness when compared to DCT or DWT only. Discrete Tchebichef Transform (DTT) denotes an alternative transformation that has a similarity property with DCT. DTT has an advantage in reducing memory requirements during computing, so the calculation speed is much faster than DCT. This study tested the performance of DTT and DCT on non-blind image watermarking method, where DTT and DCT are performed after DWT. Based on the experimental results, this research proved that the DTT was combined successfully with DWT and very potential for further investigation because it has a computing performance much better than DCT. While the image watermarking quality, both the imperceptibility and robustness aspects were completely identical with the combination of DCT and DWT transformation.</span>
APA, Harvard, Vancouver, ISO, and other styles
5

Kim, Da Mi, and woo ri Kim. "The Effects of Discrete Trial Training (DTT) for Individuals with Developmental Disabilities: A Research Synthesis." Journal of Emotional & Behavioral Disorders 36, no. 4 (December 30, 2020): 53–69. http://dx.doi.org/10.33770/jebd.36.4.3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Li, Xiaomin, Huali Wang, Wanghan Lv, and Haichao Luo. "Sensing Fractional Power Spectrum of Nonstationary Signals with Coprime Filter Banks." Complexity 2020 (July 17, 2020): 1–17. http://dx.doi.org/10.1155/2020/2608613.

Full text
Abstract:
The coprime discrete Fourier transform (DFT) filter banks provide an effective scheme of spectral sensing for wide-sense stationary (WSS) signals in case that the sampling rate is far lower than the Nyquist sampling rate. And the resolution of the coprime DFT filter banks in the Fourier domain (FD) is 2π/MN, where M and N are coprime. In this work, a digital fractional Fourier transform- (DFrFT-) based coprime filter banks spectrum sensing method is suggested. Our proposed method has the same sampling principle as the coprime DFT filter banks but has some advantages compared to the coprime DFT filter banks. Firstly, the fractional power spectrum of the chirp-stationary signals which are nonstationary in the FD can be sensed effectively by the coprime DFrFT filter banks because of the linear time-invariant (LTI) property of the proposed system in discrete-time Fourier domain (DTFD), while the coprime DFT filter banks can only sense the power spectrum of the WSS signals. Secondly, the coprime DFrFT filter banks improve the resolution from 2π/MN to 2π sin α/MN by combining the fractional filter banks theory with the coprime theory. Simulation results confirm the obtained analytical results.
APA, Harvard, Vancouver, ISO, and other styles
7

Kim, Eunyoung, Yongmin Lee, Sea-Ho Oh, Hyereyong Park, Seokjun Seo, and Min-Suk Bae. "Relationship between DTT-OP & ROS and Carbonaceous Thermal Characteristics in PM2.5." Journal of Korean Society for Atmospheric Environment 35, no. 4 (August 31, 2019): 451–60. http://dx.doi.org/10.5572/kosae.2019.35.4.451.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Shin, 비연속개별시도교수(DTT)기반 동작인식게임이 장애학생의 인지 및. 운동과제 수행에 미치는 변화. "Changes of performance of Motion-recognition game based DTT on the Cognitive and Motor Skills of Student with Disabilities in Special Class." Journal of Special Education & Rehabilitation Science 59, no. 4 (December 30, 2020): 115–35. http://dx.doi.org/10.23944/jsers.2020.12.59.4.5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Gonzalez Carmona, Juan Manuel, Alexander Ruden Muñoz, Christian Barbosa, Carolina Ortega Portilla, and Federico Sequeda Osorio. "Computational Study of Allotropic Structures of Carbon by Density Functional Theory (DTF)." Ingeniería y Ciencia 10, no. 19 (January 2014): 145–62. http://dx.doi.org/10.17230/ingciencia.10.19.7.

Full text
Abstract:
In this paper using Density Functional Theory (DFT), the principal carbonallo tropic crystalline structures (Diamond, graphite, nanotube y fullerene-C60) were simulated. The results shows diamond sp3 bonds formation between carbon atomsand low reactivity, indicating low probability of lateral compound formation and high mechanical properties. Interplanar weakness was evidentin graphite structure, which is related to solid lubrication process. Carbon-Carbon metallic bonds and polarizations at the edges of the structure were observed in Armchair Carbon Nanotube, stabilizing the system which allows the nanotube continuous growth. In fullerene C60structureaFaraday nano-gauge behavior was confirmed, together withlowprobability of interatomic polarization, indicating high structural stability. Besides Total Energy (TE) and Nuclear Repulsion Energy (NRE) values were used to perform energetic comparisons between different structures, allowing the study of electronic stability and their relationship to mechanical properties.
APA, Harvard, Vancouver, ISO, and other styles
10

Zhang, Mingjing, Liangjian Zhu, Pengzhi Guo, Xunchang Wang, Junfeng Tong, Xiaofang Zhang, Yongjian Jia, Yangjun Xia, and Chenglong Wang. "Effect of Flank Rotation on the Photovoltaic Properties of Dithieno[2,3-d:2′,3′-d′]benzo[1,2-b:4,5-b′]dithiophene-Based Narrow Band Gap Copolymers." Polymers 11, no. 2 (February 1, 2019): 239. http://dx.doi.org/10.3390/polym11020239.

Full text
Abstract:
Side chain engineering has been an effective approach to modulate the solution processability, optoelectronic properties and miscibility of conjugated polymers (CPs) for organic/polymeric photovoltaic cells (PVCs). As compared with the most commonly used method of introducing alkyl chains, the employment of alkyl-substituted aryl flanks would provide two-dimensional (2-D) CPs having solution processability alongside additional merits like deepened highest occupied molecular orbital (HOMO) energy levels, increased absorption coefficient and charger transporting, etc. In this paper, the triple C≡C bond was used as conjugated linker to decrease the steric hindrance between the flanks of 4,5-didecylthien-2-yl (T) and dithieno[2,3-d:2’,3’-d’]benzo[1,2-b:4,5-b’]dithiophene (DTBDT) core. In addition, an alternating CP derived from 4,5-didecylthien-2-yl-ethynyl (TE) flanked DTBDT, and 4,9-bis(4-octylthien-2-yl) naphtho[1,2-c:5,6-c’]bis[1,2,5]thiadiazole (DTNT), named as PDTBDT-TE-DTNT, was synthesized and characterized. As compared with the controlled PDTBDT-T-DTNT, which was derived from 4,5-didecylthien-2-yl flanked DTBDT and DTNT, the results for exciton dissociation probability, density functional theory (DFT), time-resolved photoluminescence (PL) measurements, etc., revealed that the lower steric hindrance between TE and DTBDT might lead to the easier rotation of the TE flanks, thus contributing to the decrease of the exciton lifetime and dissociation probability, finally suppressing the short-circuit current density (JSC), etc., of the photovoltaic devices from PDTBDT-TE-DTNT.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "DFT/ DTFT"

1

Oliveira, André Diniz de. "Métodos de estimação fasorial na presença de decaimento cc exponencial e inter-harmônicos." Universidade Federal de Juiz de Fora, 2015. https://repositorio.ufjf.br/jspui/handle/ufjf/244.

Full text
Abstract:
Submitted by Renata Lopes (renatasil82@gmail.com) on 2015-12-16T12:34:13Z No. of bitstreams: 1 andredinizdeoliveira.pdf: 3666386 bytes, checksum: 0179545867fe6173fdae7f0b67dff2d3 (MD5)
Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2015-12-16T15:15:19Z (GMT) No. of bitstreams: 1 andredinizdeoliveira.pdf: 3666386 bytes, checksum: 0179545867fe6173fdae7f0b67dff2d3 (MD5)
Made available in DSpace on 2015-12-16T15:15:19Z (GMT). No. of bitstreams: 1 andredinizdeoliveira.pdf: 3666386 bytes, checksum: 0179545867fe6173fdae7f0b67dff2d3 (MD5) Previous issue date: 2015-05-27
Esta tese propõe dois métodos de estimação fasorial do componente fundamental. O pri-meiro estima o fasor na presença de componentes harmônicos, decaimento CC exponen-cial e ruído. O segundo estima o fasor na presença de componentes harmônicos, inter-harmônicos, inter-harmônicos variantes no tempo, decaimento CC exponencial e ruído. Todos os componentes de sinais utilizados são modelados e, para facilitar o entendimento dos métodos que serão propostos, os componentes são divididos em dois grupos: compo-nentes gerais e componentes extras. Alguns algoritmos de estimação existentes na litera-tura são estudados e dois são escolhidos para compor as proposições: DFT com suas va-riações e métodos de subespaços. O primeiro método sintetiza e implementa uma janela seguida da aplicação de uma DTFT para eliminar os componentes fundamental e harmô-nicos do sinal. O resultado é utilizado para estimar a influência do decaimento CC expo-nencial no componente fundamental. Esta influência é subtraída de uma estimação faso-rial via DFT para obter o componente fundamental correto. O segundo método utiliza esta mesma estrutura, entretanto insere um método de subespaço para calcular a frequência e constante de tempo dos componentes extras. Essa união cria um algoritmo distinto dos encontrados na literatura e nomeado de DTFT ESPRIT. A partir da possibilidade dos novos cálculos, o método consegue estimar o componente fundamental na presença de inter-harmônicos e inter-harmônicos variantes no tempo, além de harmônicos, decai-mento CC exponencial e ruído.
This thesis proposes two methods to estimate the phasor of the fundamental frequency component. The first one estimates the phasor in the presence of harmonic, decaying DC, and noise. The second one estimates the phasor in the presence of harmonics, inter-har-monics, time-varying inter-harmonics, decaying DC, and noise. All the signal compo-nents to be used are modeled and divided in two groups (general components and extra componentes) to better understand the proposed methods. The existing estimation algo-rithms in the literature are studied and described. Two algorithms are chosen as part of the new propositions: DFT and its variations and subspaces methods. The first method synthesizes and implements a DTFT window to eliminate the fundamental frequency and harmonic components of the signal. The result is used to estimate the influence of the decaying DC in the fundamental frequency component. This influence is subtracted from a phasor estimation via DFT in order to get the correct fundamental component. The second method has the same structure, however uses a subspace method for computing the frequency and time constant of the extra components. This combination creates a new algorithm named DTFT ESPRIT. From the new variable computing, the method is able to estimate the fundamental frequency component in the presence of different types of components as well as harmonics, decaying DC, and noise: inter-harmonics and time-varying inter-harmonics.
APA, Harvard, Vancouver, ISO, and other styles
2

Collins, William C. "An empirical investigation of the DFIT framework for measuring DTF and DIF in a polytomous satisfaction scale." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/28923.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Rashid, I. "The politics of DTT policy-making in Bulgaria : the significance of path dependencies and institutional characteristics." Thesis, University of Westminster, 2015. https://westminsterresearch.westminster.ac.uk/item/9w194/the-politics-of-dtt-policy-making-in-bulgaria-the-significance-of-path-dependencies-and-institutional-characteristics.

Full text
Abstract:
This thesis examines the politics of the policy process concerning the introduction of digital terrestrial television (DTT) in Bulgaria. Bulgaria is an Eastern European post-communist country and a member of the European Union (EU) since 2007. The policy of digitalisation of terrestrial broadcasting is studied from a domestic perspective that focuses on the relevance of the national institutional structures and their response to internal and external (notably EU) influences. The thesis relies primarily on the ‘new institutionalist’ theoretical approach to examine how historical path dependencies and state capacities have enabled or disabled certain types of behaviour by public and private actors which have in turn shaped the policy process. In this respect, the role of the EU is seen as refracted through the prism of domestic arrangements, capacities and interests. The thesis demonstrates that the weak institutional capacities of the Bulgarian state, political patronage, clientelism and cronyism, failed to ensure a clear, fair and transparent DTT switchover policy. Sectoral broadcasting characteristics including the prominence of pay-for platforms and small market size contributed to this result, yet the thesis argues that the extent of their impact has been determined by structural characteristics within which the desion-making process has taken place. The thesis shows that far from genuine public interest objectives - such as increased media plurality, a stronger role for PSB, more competition within and between platforms, and efficient use of spectrum - the DTT transition in the country has served to reinforce path-dependencies and historical continuities. This last point has been observed in relation to digital television policies in Western countries, such as Britain and the USA (Galperin, 2004a) and Sweden and Spain (Suarez Cantel, 2011: 318). More research is needed to confirm or not this conclusion in relation to other (post-communist) countries and other sectors.
APA, Harvard, Vancouver, ISO, and other styles
4

Mason, Terry, and Fred Thames. "AN OPEN-ARCHITECTURE APPROACH TO SCALEABLE DATA CAPTURE." International Foundation for Telemetering, 1999. http://hdl.handle.net/10150/608537.

Full text
Abstract:
International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, Nevada
The ultra high capacity disk-based data recorders now entering service offer not just a convenient and inexpensive alternative to conventional tape systems for applications like Telemetry and Flight Test but also a unique opportunity to rethink the classical models for data capture, analysis and storage. Based on ‘open architecture’ interface standards- typically SCSI-this new generation of products represents an entirely new approach to the way data is handled. But the techniques they employ are equally applicable to any SCSI storage device. This Paper discusses a range of practical scenarios illustrating how it is now possible to `mix-and-match’ recording technologies at will-disk-array, DLT, DTF, ExaByte, JAZ, ZIP, DVD, etc.- to produce an almost infinite combination of readily scaleable plug-and-play data capture, analysis and archiving solutions. The cost and reliability benefits arising from the use of standard mass-produced storage sub-systems are also considered
APA, Harvard, Vancouver, ISO, and other styles
5

Jacquelin, Camille. "Nanodéfauts formés sous irradiation aux électrons dans l’aluminium." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS570.

Full text
Abstract:
Sous irradiation, les flux de particules (neutrons, ions, électrons) créent des défauts ponctuels (lacunes et interstitiels) qui génèrent des défauts étendus (boucles de dislocation, cavités) responsables de la fragilisation des matériaux. L'aluminium est un matériau de faible masse et de faible énergie seuil de déplacement (Ed=16-19 eV) ce qui permet de créer les nanodéfauts étendus directement sous irradiation aux électrons dans un microscope électronique à transmission haute résolution (HRMET). Cet instrument permet non seulement de caractériser finement les nanodéfauts mais également d'étudier leur évolution in situ sous irradiation, ceci en fonction de la température, du taux de dommage et d'une pression partielle d'hydrogène. Nous avons constaté un effet important de la pression partielle d'hydrogène sur la cinétique de formation des boucles de dislocation et des cavités. Parallèlement, nous avons mis en place une modélisation multi-échelle des effets de taille finie et de discrétisation du réseau sur la morphologie d'équilibre des cavités à partir de calculs ab initio des énergies de surface et de liaison de petits amas lacunaires et des amas mixtes lacune-hydrogène. La caractérisation expérimentale des morphologies des cavités en fonction de leur taille met en évidence trois formes régulières : une forme de croix bordée par des surfaces {100}, une forme d'octaèdre non tronqué bordée par des surfaces {111} et une forme d'octaèdre tronqué, bordée par les surfaces {111} et {100} ainsi qu'un effet de taille finie entre ces formes prédit par le modèle. De même, la mesure des fluctuations morphologiques d'une cavité au cours de sa croissance ou de sa décroissance en taille révèle le rôle déterminant des nombres magiques fixés par la géométrie et la discrétisation du réseau. A partir du modèle thermodynamique des cavités et d'une caractérisation expérimentale de la densité volumique et de la distribution en taille des nanodéfauts, nous proposons un modèle de germination des cavités sous irradiation. Nous en déduisons une taille du germe critique et un taux de germination des cavités en fonction de la température et du taux de dommage, qui sont comparés aux valeurs expérimentales correspondantes extraites des observations in situ. Enfin, nous discutons de l'effet de l'hydrogène sur la stabilité des amas mixtes lacune-hydrogène et sur la cinétique de germination des cavités
Under irradiation, flows of particles (neutrons, ions, electrons) induce ponctual defects (vacancies and interstitials) which generate extended defects (dislocation loops, cavities) that are responsible for materials weakening. Aluminum is a low mass material with a low displacement energy (Ed=16-19 eV) which allows the creation of extended defects directly under electron irradiation in a high resolution transmission electron microscope (HRTEM). This instrument allows not only a fine characterization of nanodefects but also to study their evolution in situ under irradiation, depending on temperature, damage rate and a partial pressure of hydrogen. We noticed an important effect of the hydrogen partial pressure on the kinetic of formation of the cavities and dislocation loops. Simultaneously, we developped a multiscale modelisation of finite size effets and structure discretisation on equilibrium shapes of cavities based on binding and surface energies determined by ab initio calculation of small vacancy clusters and mixted hydrogen vacancy clusters. Experimental characterization of cavity shapes according to the cavity radius reveals three regular shapes : a cross shape bounded by {100} surfaces, an octahedral non-truncated shape bounded by {111} surfaces and an octahedral truncated shape, bounded by {100} and {111} surfaces as well as the determination of a finite size effect predicted by the model. Also, measurements of cavity shape dispersion during its growth and decrease showed a dominant effet of magic numbers, fixed by geometry and frustration of the structure. Based on a thermodynamic model and a fine experimental characterization of volumic density, we propose a nucleation model of cavities under irradiation. We deduce from this model a critical cluster size and a rate of cavity nucleation depending of temperature and damage, which are compared to the corresponding experimental values extracted from in situ observations. Finally, we discuss the effect of hydrogen on the stability of vacancy-hydrogen clusters and on the kinteic of cavity nucleation
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "DFT/ DTFT"

1

Brumberger, Eva, and Kathryn Northcut, eds. Designing Texts: Teaching Visual Communication. Baywood Publishing Company, Inc., 2013. http://dx.doi.org/10.2190/dtt.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "DFT/ DTFT"

1

Zieliński, Tomasz P. "Discrete Fourier Transforms: DtFT and DFT." In Starting Digital Signal Processing in Telecommunication Engineering, 65–92. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-49256-4_4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Palani, S. "Fourier Transform Analysis of Discrete Time Signals and Systems—DTFT, DFT and FFT." In Signals and Systems, 651–736. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-75742-7_7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

"DTFT, DFT, ZT, and FFT." In Practical Matlab for Engineers, 457–560. CRC Press, 2008. http://dx.doi.org/10.1201/9781420047776.ch5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

"DTFT, DFT, ZT, and FFT." In Practical MATLAB for Engineers - 2 Volume Set, 1200–1303. CRC Press, 2018. http://dx.doi.org/10.1201/9781315214528-28.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Milic, Ljiljana. "Single-Rate Discrete-Time Signals and Systems." In Multirate Filtering for Digital Signal Processing, 1–22. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-60566-178-0.ch001.

Full text
Abstract:
This chapter is a concise review of time-domain and transform-domain representations of single-rate discrete-time signals and systems. We consider first the time-domain representation of discrete-time signals and systems. The representation in transform domain comprises the discrete-time Fourier transform (DTFT), the discrete Fourier transform (DFT), and the z-transform. The basic realization structures for FIR and IIR systems are briefly described. Finally, the relations between continuous and discrete signals are given.
APA, Harvard, Vancouver, ISO, and other styles
6

Vejlgaard, Henrik. "The Rate of Adoption in Households and Organizations." In Advances in Human and Social Aspects of Technology, 373–88. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-6367-9.ch017.

Full text
Abstract:
The aim of this study is to investigate if households or organizations are faster in their adoption of an innovation. There does not appear to be existing research on this area of diffusion of innovations research. In this comparative study, the study object is digital terrestrial television (DTT), specifically the implementation of DTT in Denmark. By taking a service theory approach, DTT can be categorized as a service innovation. The rate of adoption is a concept in diffusion of innovations theory, which is used as the study's theoretical framework. For both units of analysis, three surveys were carried out. Based on the data, the rate of adoption for households and for organizations was established. It is clear that organizations adopt an innovation faster than households during the entire adoption process. Based on this research, a predictive model is constructed conceptually.
APA, Harvard, Vancouver, ISO, and other styles
7

Dragoni, Aldo Franco. "Health Services through Digital Terrestrial Television." In Telehealth Networks for Hospital Services, 207–27. IGI Global, 2013. http://dx.doi.org/10.4018/978-1-4666-2979-0.ch014.

Full text
Abstract:
This chapter defines a scenario for providing Health Services through the Digital Terrestrial Television (DTT), both for patients (monitoring health parameters) and healthy citizens. A number of services will be provided over DTT, not only by means of informative or interactive applications broadcast and installed on the set-top box, but also as transactional services through the secure return channel. However, much effort has to be spent to guarantee the usability of that new TV-based interface, which is quite different from that of a PC-based Web application.
APA, Harvard, Vancouver, ISO, and other styles
8

Dvoynikov, S. I., Yu A. Tarasova, and I. A. Fomushkina. "Implementation of Preventive Activities, 2nd edition." In Implementation of Preventive Activities, 1–480. OOO «GEOTAR-Media» Publishing Group, 2020. http://dx.doi.org/10.33029/9704-5562-3-dtf-2020-1-480.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Akner, Gunnar. "Personalized medicine for older adults." In Oxford Textbook of Geriatric Medicine, 1325–34. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780198701590.003.0172.

Full text
Abstract:
Each older person presents with a unique clinical phenotype. This clinical heterogeneity in older adults calls for a high degree of personalized/individualized approach to geriatric medicine and to the care of older adults. Individualized clinical health analysis and management could be performed according to the DTF-model (i.e. Diagnostics-Treatment-Follow-up), which has implications for education/training, medical records, organization, and financing of care for older people. A four-step clinical analysis process based on the DTF-model is presented, aiming to operationalize how a comprehensive geriatric assessment could be visualized, thereby serving as a much longed for ‘geroscope’. A main challenge for the future is to restructure healthcare to suit the most common long-term health problem (i.e. multimorbidity). Future medical developments should be based on geriatric principles and preferably be organized to allow clinical research in clinical routine care to stimulate relevance and development of new methods for clinical treatment trials.
APA, Harvard, Vancouver, ISO, and other styles
10

Jung, In-Sook. "Critical Issues and Implications of Digital TV Transition." In Encyclopedia of Multimedia Technology and Networking, Second Edition, 286–92. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-60566-014-1.ch039.

Full text
Abstract:
Since the inception of digital terrestrial TV (DTT) in the United Kingdom on September 23, 1998, many countries have developed keen interests in this changing landscape of digital television. Soon after, the U.S. also started DTT on November 1, 1998, and other countries such as Germany, France, Japan, and Korea would join the technological trend. Most countries are scheduling the transition of analog TV into digital TV by around 2010 (Table 1). In the digitalization process, each government has two main concerns; one is about when the conversion from analog to digital TV (DTV) is scheduled, and the other is about how smoothly the schedule is completed. While the U.S. currently set analog switch-off for February 17, 2009, the European Commission has planned that switchover from analog TV should be completed in Member States by 2012. The spectrum plans of Member States in the EU said to be flexible enough to allow the introduction of other electronic communications services, along with DTT (Indepen, Ovum, & Fathom, 2005). According to EU Directive, the UK is planning to finish the switchover in 2012 and Germany in 2010. In Asia, South Korea is expected to be completed in 2010, Japan in 2011, and China in 2015. Unlike government-announced timetables, each country has some difficulties in keeping for the transition process so that the successful conversion within the scheduled timeline may not be possible. Thus, this article first examines which kinds of problems and alternatives are emerging in the policy process for DTV transition in several countries. Secondly, it attempts to find the global implication from what sorts of DTV transition issues are observed in most countries and from how they are broaching the problems of existing regulation systems and the social conflicts among stockholders, especially in Asian countries.
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "DFT/ DTFT"

1

Liang, Wei-Dan, and Xue-Dong Liu. "Comparison of approximate DCT and approximate DTT for image compression." In 2021 IEEE 2nd International Conference on Big Data, Artificial Intelligence and Internet of Things Engineering (ICBAIE). IEEE, 2021. http://dx.doi.org/10.1109/icbaie52039.2021.9389991.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Hussein, Adel, and Nael Hirzallah. "Data reordering in Discrete Trigonometric Transforms (DTT) using scalable interconnect networks implemented for FFT and DCT." In 2012 International Symposium on Communications and Information Technologies (ISCIT). IEEE, 2012. http://dx.doi.org/10.1109/iscit.2012.6380955.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "DFT/ DTFT"

1

Phifer, M. A. D-Area Treatment Trench (DTT-1) Evaluation. Office of Scientific and Technical Information (OSTI), June 2003. http://dx.doi.org/10.2172/812130.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Berrocal Gonzalo, Soledad, Marta Redondo García, Virginia Martín Jiménez, and Eva Campos Domínguez. Presence of infotainment in Spain’s mainstream DTT channels. Revista Latina de Comunicación Social, RLCS, February 2014. http://dx.doi.org/10.4185/rlcs-2014-1002en.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Rowland, Peter. The 90-day DTF interest rate: why does it remain constant? Bogotá, Colombia: Banco de la República, February 2006. http://dx.doi.org/10.32468/be.371.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Salvat-Martinrey, Guiomar. Policies towards DTT in the Community of Madrid during 2008 and 2009. Revista Latina de Comunicación Social, 2010. http://dx.doi.org/10.4185/rlcs-65-2010-907-379-391-en.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Suing, A. Interactivity, digital dividend and information in the implementation of DTT. The case study of Ecuador. Revista Latina de Comunicación Social, August 2014. http://dx.doi.org/10.4185/rlcs-2014-1022en.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Kercher, Andrew, Brian Jolly, Fred Montgomery, Chinthaka Silva, and John Hunn. Data Compilation for AGR-3/4 Designed-to-Fail (DTF) Fuel Particle Batch LEU03-07DTF. Office of Scientific and Technical Information (OSTI), April 2011. http://dx.doi.org/10.2172/1649083.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Hunn, John D., and James Henry Miller. Data Compilation for AGR-3/4 Designed-to-Fail (DTF) Fuel Particle Batch LEU04-02DTF. Office of Scientific and Technical Information (OSTI), October 2008. http://dx.doi.org/10.2172/940336.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Dagalakis, Nicholas, Albert J. Wavering, and Peter Spidaliere. Recommended fine positioning test for the Development Test Flight [DTF-1] of the NASA Flight Telerobotic Servicer. Gaithersburg, MD: National Institute of Standards and Technology, 1991. http://dx.doi.org/10.6028/nist.ir.4478.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'DFT/ DTFT' for particular source types:
Journal articles
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!

To the bibliography