Relevant bibliographies by topics / QCA

Academic literature on the topic 'QCA'

Author: Grafiati
Published: 4 June 2021
Last updated: 14 March 2023

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

Select a source type:

Contents

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

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 "QCA"

1

Tahir, Iqmal, Mudasir Mudasir, Irza Yulistia, and Mustofa Mustofa. "QUANTITATIVE STRUCTURE-ACTIVITY RELATIONSHIP ANALYSIS (QSAR) OF VINCADIFFORMINE ANALOGUES AS THE ANTIPLASMODIAL COMPOUNDS OF THE CHLOROQUINOSENSIBLE STRAIN." Indonesian Journal of Chemistry 5, no. 3 (June 15, 2010): 255–60. http://dx.doi.org/10.22146/ijc.21800.

Full text
Abstract:
Quantitative Structure-Activity Relationship (QSAR) analysis of vincadifformine analogs as an antimalarial drug has been conducted using atomic net charges (q), moment dipole (), LUMO (Lowest Unoccupied Molecular Orbital) and HOMO (Highest Occupied Molecular Orbital) energies, molecular mass (m) as well as surface area (A) as the predictors to their activity. Data of predictors are obtained from computational chemistry method using semi-empirical molecular orbital AM1 calculation. Antimalarial activities were taken as the activity of the drugs against chloroquine-sensitive Plasmodium falciparum (Nigerian Cell) strain and were presented as the value of ln(1/IC50) where IC50 is an effective concentration inhibiting 50% of the parasite growth. The best QSAR model has been determined by multiple linier regression analysis giving QSAR equation: Log (1/IC50) = 9.602.qC1 -17.012.qC2 +6.084.qC3 -19.758.qC5 -6.517.qC6 +2.746.qC7 -6.795.qN +6.59.qC8 -0.190. -0.974.ELUMO +0.515.EHOMO -0.274. +0.029.A -1.673 (n = 16; r = 0.995; SD = 0.099; F = 2.682) Keywords: QSAR analysis, antimalaria, vincadifformine.
APA, Harvard, Vancouver, ISO, and other styles
2

Joy, Upal Barua, Shourov Chakraborty, Sharnali Islam, Hasan U. Zaman, and Mehedi Hasan. "Quantum-Dot Cellular Automata-Based Full Adder Design: Comprehensive Review and Performance Comparison." Advances in Materials Science and Engineering 2023 (January 10, 2023): 1–13. http://dx.doi.org/10.1155/2023/6784413.

Full text
Abstract:
Being one of the promising techniques for future computing systems, quantum-dot cellular automata (QCA)-based circuit design has gained massive interest among researchers due to which numerous QCA-based full adder (FA) circuits have been designed. Due to numerous QCA FA circuits available in the existing literature, researchers find it difficult to invest the time to search, implement, simulate, and analyze QCA FAs to find the best-suited design according to their needs. Existing review articles do not present a complete overview and performance comparison of QCA FAs. Also, the existing articles do not include quite a number of QCA FA designs in the literature review. As a result, a detailed review including all possible QCA FAs becomes essential. Therefore, rather than going for a new QCA FA design, this research aims to aid researchers by providing an extensive literature review and comprehensive study on existing QCA FAs. A total of 47 QCA FAs have been considered for analysis. The QCA FA implementation method and performance parameters are summarized in a tabular manner to provide a quick overview and comparison of the QCA FAs.
APA, Harvard, Vancouver, ISO, and other styles
3

Taheri, Zahra, Abdalhossein Rezai, and Hamid Rashidi. "Novel single layer fault tolerance RCA construction for QCA technology." Facta universitatis - series: Electronics and Energetics 32, no. 4 (2019): 601–13. http://dx.doi.org/10.2298/fuee1904601t.

Full text
Abstract:
Quantum-dot Cellular Automata (QCA) technology has become a promising and accessible candidate that can be used for digital circuits implementation at Nanoscale, but the circuit design in the QCA technology has been limited due to fabrication high-defect rate. So, this issue is an interesting research topic in the QCA circuits design. In this study, a novel 3-input Fault Tolerance (FT) Majority Gate (MG) is developed. Accordingly, an efficient 1-bit QCA full adder is developed using the developed 3-input MG. Then, a new 4-bit FT QCA Ripple Carry Adder (RCA) is developed based on the proposed 1-bit FT QCA FA. The developed circuits are implemented in the QCA Designer tool version 2.0.3. The results indicate that the developed QCA circuits provide advantages compared to other QCA circuits in terms of double and single cell missing defect, area and delay time.
APA, Harvard, Vancouver, ISO, and other styles
4

Mokhtari, Dariush, Abdalhossein Rezai, Hamid Rashidi, Faranak Rabiei, Saeid Emadi, and Asghar Karimi. "Design of novel efficient full adder architecture for Quantum-dot Cellular Automata technology." Facta universitatis - series: Electronics and Energetics 31, no. 2 (2018): 279–85. http://dx.doi.org/10.2298/fuee1802279m.

Full text
Abstract:
In this paper the novel coplanar circuits for full adder implementation in Quantum-dot Cellular Automata (QCA) technology are presented. We propose a novel one-bit full adder circuit and then utilize this new circuit to implement novel four-bit Ripple Carry Adder (RCA) circuit in the QCA technology. The QCA Designer tool version 2.0.1 is utilized to implement the designed QCA full adder circuits. The implementation results show that the designed QCA full adder circuits have an improvement compared to other QCA full adder circuits.
APA, Harvard, Vancouver, ISO, and other styles
5

Shiri, Ahmadreza, Abdalhossein Rezai, and Hamid Mahmoodian. "Design of efficient coplanar 1-bit comparator circuit in QCA technology." Facta universitatis - series: Electronics and Energetics 32, no. 1 (2019): 119–28. http://dx.doi.org/10.2298/fuee1901119s.

Full text
Abstract:
QCA technology is an emerging and promising technology for implementation of digital circuits in nano-scale. The comparator circuits play an important role in digital circuits. In this work, a new and efficient coplanar 1-bit comparator circuit is proposed and evaluated in the QCA technology. The designed coplanar 1-bit QCA comparator circuit is constructed based on majority gate, XNOR gate and inverter gate that are designed carefully. The functionality of the designed coplanar 1-bit QCA comparator circuit is verified by using QCADesigner version 2.0.3. The obtained results indicate that the designed 1-bit QCA comparator circuit requires 0.03 ?m2 area and 38 QCA cells. It also has 0.5 clock cycles delay. The comparison demonstrates that the designed QCA comparator circuit provides improvements in comparison with other QCA comparator circuits in terms of effective area, cell count, and delay as well as cost.
APA, Harvard, Vancouver, ISO, and other styles
6

Liu, Xuqing, Xiaofei Wang, Donghao Chen, and Honggang Zhang. "Automatic Quantitative Coronary Analysis Based on Deep Learning." Applied Sciences 13, no. 5 (February 25, 2023): 2975. http://dx.doi.org/10.3390/app13052975.

Full text
Abstract:
As a core technique to quantitatively assess the stenosis severity of coronary arteries, quantitative coronary analysis (QCA) is urgently supposed to become more automated and intelligent, especially for regions lacking expertise and technology. The existing QCA methods highly depend on manual operation, which is time-consuming and subject to personal experience. This study innovatively proposes a fully automatic QCA workflow based on artificial intelligence (AI-QCA), which can quickly and accurately make a quantitative assessment of stenosis severity. The whole AI-QCA workflow mainly consists of three parts: the boundary-aware segmentation on the coronary angiogram (CAG) images, the AI-enabled coronary artery tree construction, and the diameter fitting and stenosis detection. Experiments show that the precision, recall, and F1 score of the segmentation, evaluated on 1322 CAGs, are 0.866, 0.897, and 0.879, respectively. Furthermore, the RMSE between diameter stenosis assessed by AI-QCA and manual QCA served by senior experts, evaluated on 249 CAGs, is 0.064, and the Pearson coefficient is 0.765. Meanwhile, the operation time can be reduced from tens of minutes to several seconds by AI-QCA. As a conclusion, the proposed AI-QCA is able to quickly quantify stenosis parameters as accurately as senior experts, which is significant for the intelligent diagnosis and treatment of coronary artery disease.
APA, Harvard, Vancouver, ISO, and other styles
7

Cong, Peizhong, and Enrique P. Blair. "Clocked molecular quantum-dot cellular automata circuits tolerate unwanted external electric fields." Journal of Applied Physics 131, no. 23 (June 21, 2022): 234304. http://dx.doi.org/10.1063/5.0090171.

Full text
Abstract:
Quantum-dot cellular automata (QCA) may provide low-power, general-purpose computing in the post-CMOS era. A molecular implementation of QCA features nanometer-scale devices and may support [Formula: see text]THz switching speeds at room-temperature. Here, we explore the ability of molecular QCA circuits to tolerate unwanted applied electric fields, which may come from a variety of sources. One likely source of strong unwanted electric fields may be electrodes recently proposed for the write-in of classical bits to molecular QCA input circuits. Previous models have shown that the input circuits are sensitive to the applied field, and a coupled QCA wire can successfully transfer the input bit to downstream circuits despite strong applied fields. However, the ability of other QCA circuits to tolerate an applied field has not yet been demonstrated. Here, we study the robustness of various QCA circuits by calculating their ground state responses in the presence of an applied field. To do this, a circuit is built from several QCA molecules, each described as a two-state system. A circuit Hamiltonian is formed and diagonalized. All pairwise interactions between cells are considered, along with all correlations. An examination of the ground state shows that these QCA circuits may indeed tolerate strong unwanted electric fields. We also show that circuit immunity to the dominant unwanted field component may be obtained by choosing the orientation of constituent molecules. This suggests that relatively large electrodes used for bit write-in to molecular QCA need not disrupt the operation of nearby QCA circuits. The circuits may tolerate significant electric fields from other sources as well.
APA, Harvard, Vancouver, ISO, and other styles
8

Berry, Colin, Philippe L. L’Allier, Jean Grégoire, Jacques Lespérance, Sylvie Levesque, Reda Ibrahim, and Jean-Claude Tardif. "Comparison of Intravascular Ultrasound and Quantitative Coronary Angiography for the Assessment of Coronary Artery Disease Progression." Circulation 115, no. 14 (April 10, 2007): 1851–57. http://dx.doi.org/10.1161/circulationaha.106.655654.

Full text
Abstract:
Background— The relative merits of quantitative coronary analysis (QCA) and intravascular ultrasound (IVUS) for the assessment of progression/regression in coronary artery disease are uncertain. To explore this subject further, we analyzed the angiographic and IVUS data derived from a contemporary clinical trial population. Methods and Results— We investigated the relationships between QCA and IVUS at single time points (n=525) and also for the changes over time (n=432). QCA and IVUS data underwent central laboratory analyses. Statistically significant correlations were observed between the QCA coronary artery score and the IVUS-derived lumen volume ( r =0.65, P <0.0001) and total vessel volume ( r =0.55, P <0.0001) and between the QCA cumulative coronary stenosis score and percent atheroma volume on IVUS ( r =0.32, P <0.0001) at baseline for matched segments. A similar pattern of correlations was observed for global (all segments) QCA-derived and single-vessel IVUS-derived data. There were statistically significant but weak correlations between the changes over time in lumen dimensions on QCA and IVUS ( P =0.005) and between the change in cumulative coronary stenosis score on QCA and percent atheroma volume on IVUS ( r =0.14, P =0.01). Nevertheless, patients with and without angiographic progression had changes in plaque volume on IVUS of 9.13 and 0.20 mm 3 , respectively ( P =0.028). Conclusions— QCA- and IVUS-derived measures of lumen dimensions are correlated at single time points and for changes over time. Although the change in percent atheroma volume is only weakly correlated with QCA changes as continuous variables, disease progression on QCA is associated with significant increases in plaque volume on IVUS compared with no angiographic progression.
APA, Harvard, Vancouver, ISO, and other styles
9

Sherif, Noora H., Mohammed Hussien Ali, and Najim Abdallah Jazea. "Design and implementation reversible multiplexer using quantum-dot cellular automata approach." Bulletin of Electrical Engineering and Informatics 11, no. 6 (December 1, 2022): 3383–91. http://dx.doi.org/10.11591/eei.v11i6.4307.

Full text
Abstract:
Rapid progress in the field of nanotechnology includes using quantum dot-cellular automata (QCA) as a replacement for conventional transistor-based complementary metal oxide semiconductor (CMOS) circuits in the construction of nano-circuits. Due to ultra low thermal dissipation, rapid clocking, and extremely high density, the QCA is a rapidly growing field in the nanotechnological field to inhibit the field effect transistor (FET)-based circuit. This paper discusses and evaluates two multiplexer (MUX) architectures: an innovative and effective 4×1 MUX structure and an 8×1 MUX structures using QCA technology. The suggested architectural designs are constructed using the Fredkin and controlled-NOT (CNOT) gates. These constructions were designed to simulate using tool QCA designer 2.0.3. The 591 and 1,615 cells would be used by the 4×1 and 8×1 QCA MUX architectures, respectively. The simulation results demonstrate that, when compared to the previous QCA MUX structures, the suggested QCA MUX designs have the best clock latency performance and use of different gate types.
APA, Harvard, Vancouver, ISO, and other styles
10

Verweij, Stefan, and Elen-Maarja Trell. "Qualitative Comparative Analysis (QCA) in Spatial Planning Research and Related Disciplines: A Systematic Literature Review of Applications." Journal of Planning Literature 34, no. 3 (April 11, 2019): 300–317. http://dx.doi.org/10.1177/0885412219841490.

Full text
Abstract:
Qualitative comparative analysis (QCA) is a potentially interesting method for spatial planning researchers. Although increasingly used, its application in spatial planning research is lagging behind other disciplines. We conducted a systematic literature review of QCA applications in spatial planning and related disciplines (SPARD), addressing two questions: when, where, and how is QCA used in SPARD and what are the main advantages of QCA for spatial planning research? We found that the main reasons why QCA is used in SPARD are its sensitivity to context, its ability to use small-/medium- n cases, and its attention to causal complexity.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "QCA"

1

Orr, Marc Stewart. "A Logic Formulation for the QCA Cell Arrangement Problem." PDXScholar, 2010. https://pdxscholar.library.pdx.edu/open_access_etds/438.

Full text
Abstract:
Some people believe that IC densities are approaching the fundamental limits inherent to semiconductor technologies. One alternative to semiconductors is Quantum-dot Cellular Automata (QCA); QCA is a nanotechnology that offers the potential to build denser IC's that switch at higher frequencies and run on lower power. QCA's most basic building block, the QCA cell, is inherently binary; digital circuits are implemented by arranging these QCA cells in pre-defined configurations on a two dimensional plane. This paper proposes a logic formulation that describes arranging QCA cells on a two dimensional plane; it is presented as a set of rules that can be implemented with basic Boolean variables and operators. This Boolean formulation is general and can be applied to any given specification. In addition, an optimization constraint is defined so that the logic formulation will only validate the most efficient QCA cell arrangements. The correctness of the logic formulation has been empirically verified by testing it with a SAT solver. The effectiveness of the minimization constraint in conjunction with the logic formulation has been tested with a Pseudo-Boolean ILP solver.
APA, Harvard, Vancouver, ISO, and other styles
2

Singhal, Rahul. "Logic Realization Using Regular Structures in Quantum-Dot Cellular Automata (QCA)." PDXScholar, 2011. https://pdxscholar.library.pdx.edu/open_access_etds/196.

Full text
Abstract:
Semiconductor industry seems to approach a wall where physical geometry and power density issues could possibly render the device fabrication infeasible. Quantum-dot Cellular Automata (QCA) is a new nanotechnology that claims to offer the potential of manufacturing even denser integrated circuits, which can operate at high frequencies and low power consumption. In QCA technology, the signal propagation occurs as a result of electrostatic interaction among the electrons as opposed to flow to the electrons in a wire. The basic building block of QCA technology is a QCA cell which encodes binary information with the relative position of electrons in it. A QCA cell can be used either as a wire or as logic. In QCA, the directionality of the signal flow is controlled by phase-shifted electric field generated on a separate layer than QCA cell layer. This process is called clocking of QCA circuits. The logic realization using regular structures such as PLAs have played a significant role in the semiconductor field due to their manufacturability, behavioral predictability and the ease of logic mapping. Along with these benefits, regular structures in QCA's would allow for uniform QCA clocking structure. The clocking structure is important because the pioneers of QCA technology propose it to be fabricated in CMOS technology. This thesis presents a detailed design implementation and a comparative analysis of logic realization using regular structures, namely Shannon-Lattices and PLAs for QCAs. A software tool was developed as a part of this research, which automatically generates complete QCA-Shannon-Lattice and QCA-PLA layouts for single-output Boolean functions based on an input macro-cell library. The equations for latency and throughput for the new QCA-PLA and QCA-Shannon-Lattice design implementations were also formulated. The correctness of the equations was verified by performing simulations of the tool-generate layouts with QCADesigner. A brief design trade-off analysis between the tool-generated regular structure implementation and the unstructured custom layout in QCA is presented for the full-adder circuit.
APA, Harvard, Vancouver, ISO, and other styles
3

Araujo, Carolina Cristina Pinto Prado de. "Análise qualitativa comparativa (QCA) da exportação de jogadores : clubes de futebol brasileiro." Escola Superior de Propaganda e Marketing, 2017. http://tede2.espm.br/handle/tede/263.

Full text
Abstract:
Submitted by Adriana Alves Rodrigues (aalves@espm.br) on 2017-11-21T11:08:37Z No. of bitstreams: 1 Carolina Cristina Pinto Prado Araujo.pdf: 1448807 bytes, checksum: f672714f182b088c6ac0e4fb1ed544da (MD5)
Approved for entry into archive by Adriana Alves Rodrigues (aalves@espm.br) on 2017-11-21T11:09:19Z (GMT) No. of bitstreams: 1 Carolina Cristina Pinto Prado Araujo.pdf: 1448807 bytes, checksum: f672714f182b088c6ac0e4fb1ed544da (MD5)
Approved for entry into archive by Ana Cristina Ropero (ana@espm.br) on 2017-11-22T12:54:22Z (GMT) No. of bitstreams: 1 Carolina Cristina Pinto Prado Araujo.pdf: 1448807 bytes, checksum: f672714f182b088c6ac0e4fb1ed544da (MD5)
Made available in DSpace on 2017-11-22T13:02:04Z (GMT). No. of bitstreams: 1 Carolina Cristina Pinto Prado Araujo.pdf: 1448807 bytes, checksum: f672714f182b088c6ac0e4fb1ed544da (MD5) Previous issue date: 2017-03-31
Researches has shown that companies in emerging countries often have a lack in basic technological capabilities. The export of football players has played an important role in the export agenda of the country. In addition, there is a need for studies that try to understand the relationship between capabilities and an external variable in emerging countries. This research contributes to overcoming these gaps by advancing knowledge about what technological capabilities are necessary and sufficient for the football club to succeed in exporting, through the application of an innovative method called Qualitative Comparative Analysis (QCA). It is verified that, International Marketing is a necessary condition for success in exporting, as well as, the conjunction of this factor with planning of the development of players or infrastructure or team of professionals, forms three paths that increase the possibility of export success. The research contributes to the theory of technological capabilities by means of the expansion of the domain and by indicating which combinations of factors are necessary and sufficient for the improvement of the export performance.
Pesquisas têm mostrado que às empresas de países emergentes faltam, com frequência, as capacidades tecnológicas básicas. A exportação de jogadores de futebol tem desempenhado importante papel na pauta de exportação do país. Alia-se a isso, a necessidade de estudos que tentem entender a relação das capacidades e uma variável externa, em países emergentes. Esta pesquisa contribui para a superação dessas lacunas pelo avanço do conhecimento sobre quais capacidades tecnológicas são necessárias e suficientes para que o clube de futebol tenha sucesso na exportação, por meio da aplicação de um método inovador chamado Análise Comparativa Qualitativa (QCA). Verifica-se que Marketing Internacional é condição necessária para que haja sucesso na exportação, bem como, a conjunção deste fator com planejamento do desenvolvimento de jogadores ou infraestrutura ou equipe de profissionais formam três caminhos que ampliam a possibilidade do sucesso exportador. A pesquisa contribui para a teoria de capacidades tecnológicas por intermédio da expansão do domínio e por meio da indicação de quais combinações de fatores são necessárias e suficientes para que haja melhora do desempenho exportador.
APA, Harvard, Vancouver, ISO, and other styles
4

Chen, Ke. "Explorations for Efficient Reversible Barrel Shifters and Their Mappings in QCA Nanocomputing." UKnowledge, 2015. http://uknowledge.uky.edu/ece_etds/73.

Full text
Abstract:
This thesis is based on promising computing paradigm of reversible logic which generates unique outputs out of the inputs and. Reversible logic circuits maintain one-to-one mapping inside of the inputs and the outputs. Compared to the traditional irreversible computation, reversible logic circuit has the advantage that it successfully avoids the information loss during computations. Also, reversible logic is useful to design ultra-low-power nanocomputing circuits, circuits for quantum computing, and the nanocircuits that are testable in nature. Reversible computing circuits require the ancilla inputs and the garbage outputs. Ancilla input is the constant input in reversible circuits. Garbage output is the output for maintaining the reversibility of the reversible logic but is not any of the primary inputs nor a useful bit. An efficient reversible circuit will have the minimal number of garbage and ancilla bits. Barrel shifter is one of main computing systems having applications in high speed digital signal processing, oating-point arithmetic, FPGA, and Center Processing Unit (CPU). It can operate the function of shifting or rotation for multiple bits in only one clock cycle. The goal of this thesis is to design barrel shifters based on the reversible computing that are optimized in terms of the number of ancilla and garbage bits. In order to achieve this goal, a new Super Conservative Reversible Logic Gate (SCRL gate) has been used. The SCRL gate has 1 control input depending on the value of which it can swap any two n-1 data inputs. We proved that the SCRL gate is superior to the existing conservative reversible Fredkin gate. This thesis develops 5 design methodologies for reversible barrel shifters using SCRL gates that are primarily optimized with the criteria of the number of ancilla and garbage bits. The five proposed methodologies consist of reversible right rotator, reversible logical right shifter, reversible arithmetic right shifter, reversible universal right shifter and reversible universal bidirectional shifter. The proposed reversible barrel shifter design is compared with the existing works in literature and have shown improvement ranging from 8.5% to 92% by the number of garbage and ancilla bits. The SCRL gate and design methodologies of reversible barrel shifter are mapped in Quantum Dot Cellular Automata (QCA) computing. It is illustrated that the SCRL-based designs of reversible barrel shifters have less QCA cost (cost in terms of number of inverters and majority voters) compared to the Fredkin gate- based designs of reversible barrel shifters.
APA, Harvard, Vancouver, ISO, and other styles
5

Buche, Jonas [Verfasser]. "Assessing the quality of qualitative comparative analysis (QCA) : evaluation, improvement, application / Jonas Buche." Hannover : Technische Informationsbibliothek (TIB), 2017. http://d-nb.info/1137061502/34.

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

Fernandes, Alyson Trindade. "Um algoritmo de posicionamento e roteamento de células QCA no esquema de clock USE." Universidade Federal de Viçosa, 2017. http://www.locus.ufv.br/handle/123456789/21665.

Full text
Abstract:
Submitted by Marco Antônio de Ramos Chagas (mchagas@ufv.br) on 2018-09-06T11:01:54Z No. of bitstreams: 1 texto completo.pdf: 17454685 bytes, checksum: 0026537bd59ed06db369cc7f2536bb54 (MD5)
Made available in DSpace on 2018-09-06T11:01:54Z (GMT). No. of bitstreams: 1 texto completo.pdf: 17454685 bytes, checksum: 0026537bd59ed06db369cc7f2536bb54 (MD5) Previous issue date: 2017-08-02
QCA possui um grande potencial para a construção das novas gerações de circuitos integrados, oferecendo baixo consumo de energia, escalabilidade e alta frequência de processamento. Entretanto, faltam ferramentas de projeto para automatizar etapas como o posicionamento e roteamento de circuitos. Este trabalho apresenta a primeira heurística no esquema de Clock USE capaz de efetuar o posicionamento e roteamento de circuitos combinacionais em nível de porta lógica, por meio da alocação de células QCA. O esquema de clock USE é vantajoso por ser regular7 escalável e universal. O circuito é mapeado em um grafo direto acíclico e posicionado em uma matriz de células QCA. A heurística proposta busca otimizar a area e gerar resultados de forma automatizada em comparação com outros trabalhos7 onde os projetos são feitos manualmente. Os resultados foram validados com o uso da ferramenta QCADesigner.
QCA has great potential for building new generations of integrated circuits, offering low power consumption, scalability and high processing frequency. However, there is a lack of design tools to automate placement and routing of circuits. This work presents the first heuristic in the Clock USE scheme capable of performing the P&R of combinational circuits at the logic gate level, through the allocation of QCA cells. The USE clock scheme is advantageous because it is regular, scalable, and universal. The circuit is mapped to an acyclic direct graph and positioned in an array of QCA cells. The proposed heuristic seeks to optimize the area and generate results in an automated way compared to other works, where the PR are done manually. The results were validated with the use of the QCADesigner tool.
APA, Harvard, Vancouver, ISO, and other styles
7

Silva, Daniel Galelli. "Análise qualitativa comparativa (QCA) da implantação de novos cursos (NSD): educação executiva no Brasil." reponame:Repositório Institucional do FGV, 2013. http://hdl.handle.net/10438/10637.

Full text
Abstract:
Submitted by Daniel Galelli Silva (daniel.galelli@gvmail.br) on 2013-03-22T16:26:26Z No. of bitstreams: 1 EAESP_FGV_Dissertação de Mestrado_Daniel Galelli Silva_FEV 2013.pdf: 2269833 bytes, checksum: bedf136a337c26125c54913d5ce373d7 (MD5)
Approved for entry into archive by Suzinei Teles Garcia Garcia (suzinei.garcia@fgv.br) on 2013-03-22T17:23:31Z (GMT) No. of bitstreams: 1 EAESP_FGV_Dissertação de Mestrado_Daniel Galelli Silva_FEV 2013.pdf: 2269833 bytes, checksum: bedf136a337c26125c54913d5ce373d7 (MD5)
Made available in DSpace on 2013-03-22T17:32:01Z (GMT). No. of bitstreams: 1 EAESP_FGV_Dissertação de Mestrado_Daniel Galelli Silva_FEV 2013.pdf: 2269833 bytes, checksum: bedf136a337c26125c54913d5ce373d7 (MD5) Previous issue date: 2013-02-21
Este trabalho analisou a combinação de recursos e processos utilizados no desenvolvimento de novos cursos (NSD) de educação executiva, modalidade pós-graduação lato sensu, nas escolas de negócios do Brasil. Para isso foi utilizada a metodologia de análise qualitativa comparativa (QCA), em um estudo de múltiplos casos com uma amostra de 14 instituições de ensino superior. A partir da revisão de literatura conceitual e empírica sobre desenvolvimento de novos serviços (NSD), foi testado o modelo de competência e desempenho em NSD dos autores Menor e Roth, 2008. Os resultados forneceram evidências de que o modelo de competência em NSD identificado na literatura internacional também se aplica ao Brasil. Porém o resultado desse estudo aponta casos contraditórios ao modelo que podem ser base para futuras pesquisas. Em especial pela ausência da dimensão de formalização dos processos de NSD nos casos em questão.
APA, Harvard, Vancouver, ISO, and other styles
8

Anduwan, Gabriel A. Y. "The thermal effect and fault tolerance on nanoscale devices : the quantum dot cellular automata (QCA)." Virtual Press, 2007. http://liblink.bsu.edu/uhtbin/catkey/1369913.

Full text
Abstract:
The defects and fault tolerance study is essential in the QCA devices in order to know its characteristics. Knowing the characteristics, one can understand the flow of information in a QCA system with and without manufacturing and operational defects. The manufacturing defects could be at device level or cell level. At the device level, the cell could be rotated, displaced vertically or horizontally, the cell could be missing or the size of the cell could be different. At the cell level, there could be a missing dot, dot could be displaced from its position or the size of the dots could be different. The operational defects are due to its surrounding, such as temperature or stray charge. Each of these defects and fault tolerances can be studies in detail in order to find the optimum working conditions where the information can be safely transmitted to the appropriate locations in the device.The theoretical studies have shown that at absolute temperature and without any defect, the QCA devices are operational. But it is almost impossible to manufacture a perfect or defect free device, and also it is impractical to think about operating a system at absolute zero temperature environment.Therefore, it is important to investigate the fault tolerant properties with defects and higher temperatures to see how far the QCA device can operate safely. Many studies have been done to investigate the fault tolerant properties in QCA devices. However, these studies have not completely exhausted the study of defects and temperature effects. In this study, the dot displacement and missing dots with temperature effects are investigated for the basic QCA devices and a Full Adder. In order to study fault tolerant properties, the existing theoretical model and computer simulation programs have been expanded and used. The defect characteristics have been simulated using normal distribution.
Department of Physics and Astronomy
APA, Harvard, Vancouver, ISO, and other styles
9

Rebelo, Zita Manuela Formoso. "Candidaturas da Câmara Municipal da Maia: caracterização do QCA III e breve comparação ao QREN." Master's thesis, [s.n.], 2009. http://hdl.handle.net/10284/1936.

Full text
Abstract:
Dissertação de Mestrado apresentada à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Ciências Empresariais
Este estudo versa sobre a temática de Fundos Estruturais, focalizada nos financiamentos enquadrados no QCA III e QREN das candidaturas da Câmara Municipal da Maia. Inicia-se com uma análise descritiva caracterizadora das candidaturas aprovadas e avança-se para a constituição de clusters perspectivando a distribuição do investimento realizado nas freguesias. This study is concerning the topic Structural Funds, focused on Maia town council candidacies financed by QCA III and QREN. It starts by a descriptive analysis of the candidacies approved and advances with clusters constitution evaluating the investment distribution carried out in clienteles. Cet étudie parle sur la thématique des Fonds Structurel, convergé aux finançant des candidatures du conseil municipal du Maia sur potée pour QCA III et QREN. Une primier etape du travail avance avec une descriptive caractérisation des candidatures approuvées et la deuxième etape est relationé avec la constitution de groupes retraité la distribution de l'investissement exécuté par la clientèle.
APA, Harvard, Vancouver, ISO, and other styles
10

Beaurivage, Daniel. "Développement et validation du "Questionnaire de connaissances sur l’asthme" destiné aux patients adultes (QCA-PA)." Master's thesis, Université Laval, 2015. http://hdl.handle.net/20.500.11794/26160.

Full text
Abstract:
S’appuyant sur la démarche d’élaboration de questionnaire proposée par Dussault, Valois et Frenette (2007) inspirée par DeVellis (2003), ainsi que sur le processus d’accumulation de preuves de validité préconisé par Downing (2003) et inspiré de Messick (1994), cette étude vise à développer et obtenir des preuves de validité pour un questionnaire de connaissances sur l’asthme. Cette démarche comprend six étapes : 1- détermination de l’objet de mesure à la lumière d’une revue de littérature, 2- génération d’items, 3- détermination d’un format de mesure, 4- vérification de la clarté des items, 5- prétest, 6- preuves de validité. Le Questionnaire de connaissances sur l’asthme destiné aux patients adultes (QCA-PA) a été validé auprès de 101 adultes asthmatiques fréquentant la clinique spécialisée en asthme de l’Institut universitaire de cardiologie et de pneumologie de Québec. Plusieurs éléments de preuves de validité (contenu, processus de réponse, structure interne, relation avec d’autres variables, conséquences) ont été accumulés. Le QCA-PA présente un bon niveau de cohérence interne et est mieux représenté par une structure unidimensionnelle. Utilisé en clinique, ce questionnaire pourrait augmenter l’efficacité des interventions éducatives des professionnels de la santé.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "QCA"

1

Duşa, Adrian. QCA with R. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-75668-4.

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

Howard, White. The accidental airline: Spilsbury's QCA. Madeira Park, B.C: Harbour Pub., 1994.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Howard, White. The accidental airline: Spilsbury's QCA. Madeira Park, B.C: Harbour Pub., 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Kumar, Naresh. Memory Design Using Quantum Dot Cellular Automata (QCA) Technology. Saarbrücken: LAP LAMBERT Academic Publishing, 2017.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Design and Technology Association (UK)., ed. Design and technology primary lesson plans: Based on the QCA schemes of work. Wellesbourne: DATA, 2002.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Schneider, Carsten Q. Improving inference with a "two-step" approach: Theory and limited diversity in fs/QCA. Badia Fiesolana, San Domenico (FI): European University Institute, 2003.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Authority, Qualifications and Curriculum. Baseline assessment schemes accredited by QCA for use in the academic year from september 1999. London: QCA, 1999.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

British Educational Communications and Technology Agency., ed. Secondary schools: ICT and standards : an analysis of national data from Ofsted and QCA by Becta. Coventry: British Educational Communications and Technology Agency, 2003.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

British Educational Communications and Technology Agency., ed. Primary schools: ICT and standards : an analysis of national data from Ofsted and QCA by Becta. Coventry: British Educational Communications and Technology Agency, 2003.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Authority, Qualifications and Curriculum, ed. Baseline assessment: Baseline assessment schemes accredited by QCA for use in the academic year from September 1999. [S.l.]: QCA, 1999.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "QCA"

1

Lambach, Daniel, Eva Johais, and Markus Bayer. "QCA." In Warum Staaten zusammenbrechen, 107–33. Wiesbaden: Springer Fachmedien Wiesbaden, 2016. http://dx.doi.org/10.1007/978-3-658-11823-5_6.

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

Hildebrandt, Achim, Sebastian Jäckle, Frieder Wolf, and Andreas Heindl. "QCA." In Methodologie, Methoden, Forschungsdesign, 191–214. Wiesbaden: Springer Fachmedien Wiesbaden, 2015. http://dx.doi.org/10.1007/978-3-531-18993-2_8.

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

Sridharan, K., and Vikramkumar Pudi. "QCA Terminology." In Studies in Computational Intelligence, 11–17. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-16688-9_2.

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

Duşa, Adrian. "QCA Extensions." In QCA with R, 209–40. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-75668-4_10.

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

Sasamal, Trailokya Nath, Ashutosh Kumar Singh, and Anand Mohan. "QCA Background." In Quantum-Dot Cellular Automata Based Digital Logic Circuits: A Design Perspective, 9–31. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-1823-2_2.

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

Thiem, Alrik, and Adrian Duşa. "QCA Extensions." In SpringerBriefs in Political Science, 83–92. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-4584-5_5.

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

Duşa, Adrian. "The QCA Package." In QCA with R, 19–46. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-75668-4_2.

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

Thiem, Alrik, and Adrian Duşa. "Crisp-Set QCA." In SpringerBriefs in Political Science, 27–50. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-4584-5_3.

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

Thiem, Alrik, and Adrian Duşa. "Fuzzy-Set QCA." In SpringerBriefs in Political Science, 51–81. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-4584-5_4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Duşa, Adrian. "R Basics." In QCA with R, 1–18. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-75668-4_1.

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

Conference papers on the topic "QCA"

1

Thapliyal, Himanshu, and Nagarajan Ranganathan. "Conservative QCA Gate (CQCA) for Designing Concurrently Testable Molecular QCA Circuits." In 2009 22nd International Conference on VLSI Design: concurrently with the 8th International Conference on Embedded Systems. IEEE, 2009. http://dx.doi.org/10.1109/vlsi.design.2009.75.

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

"Implementation of QCA XOR Gate Based on Interaction between QCA Cells." In Multi-Disciplinary Manila (Philippines) Conferences Jan. 23-24, 2017, Manila (Philippines). Universal Researchers (UAE), 2017. http://dx.doi.org/10.17758/uruae.ae0117516.

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

Sultana, Sayeeda, Shahriar Al Imam, and Katarzyna Radecka. "Testing QCA Modular Logic." In 2006 13th IEEE International Conference on Electronics, Circuits and Systems. IEEE, 2006. http://dx.doi.org/10.1109/icecs.2006.379885.

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

Awais, Muhammad, Marco Vacca, Mariagrazia Graziano, and Guido Masera. "FFT implementation using QCA." In 2012 19th IEEE International Conference on Electronics, Circuits and Systems - (ICECS 2012). IEEE, 2012. http://dx.doi.org/10.1109/icecs.2012.6463648.

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

Lu, Liang, Weiqiang Liu, Máire O'Neill, and Earl E. Swartzlander Jr. "QCA Systolic Matrix Multiplier." In 2010 IEEE Computer Society Annual Symposium on VLSI (ISVLSI). IEEE, 2010. http://dx.doi.org/10.1109/isvlsi.2010.53.

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

Giannou, O., H. T. Vergos, and D. Bakalis. "Squarers in QCA nanotechnology." In 2012 IEEE 12th International Conference on Nanotechnology (IEEE-NANO). IEEE, 2012. http://dx.doi.org/10.1109/nano.2012.6321897.

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

Teodosio, Tiago, and Leonel Sousa. "QCA-LG: A tool for the automatic layout generation of QCA combinational circuits." In 2007 Norchip Conference. IEEE, 2007. http://dx.doi.org/10.1109/norchp.2007.4481078.

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

Mahmoodi, Yasamin, and Mohammad A. Tehrani. "Novel fault tolerant QCA circuits." In 2014 22nd Iranian Conference on Electrical Engineering (ICEE). IEEE, 2014. http://dx.doi.org/10.1109/iraniancee.2014.6999674.

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

Karim, Faizal, Konrad Walus, and André Ivanov. "Crosstalk in QCA arithmetic circuits." In SPIE Optics + Photonics, edited by Franklin T. Luk. SPIE, 2006. http://dx.doi.org/10.1117/12.679133.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Safoev, Nuriddin, and Jun-Cheol Jeon. "Area Efficient QCA Barrel Shifter." In Ubiquitous Business and Wireless Communication & Networks 2017. Science & Engineering Research Support soCiety, 2017. http://dx.doi.org/10.14257/astl.2017.144.07.

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

Reports on the topic "QCA"

1

Orr, Marc. A Logic Formulation for the QCA Cell Arrangement Problem. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.438.

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

Singhal, Rahul. Logic Realization Using Regular Structures in Quantum-Dot Cellular Automata (QCA). Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.196.

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

J., Sehring, Korhonen-Kurki K., and Brockhaus M. Qualitative Comparative Analysis (QCA): An application to compare national REDD+ policy processes. Center for International Forestry Research (CIFOR), 2013. http://dx.doi.org/10.17528/cifor/004278.

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

Bourdeau, J. E., S. J. A. Day, and S E Zhang. Regional lake sediment geochemical data from northeastern Saskatchewan (NTS 064-E, 074-A and H): re-analysis data and QA/QC evaluation. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/329875.

Full text
Abstract:
This report presents the geochemical data, quality assurance and quality control (QA/QC) results of the re-analysis of lake sediment samples collected from northeastern Saskatchewan (NTS 064-E, 074-A and H). The original lake survey was conducted in 1984 and the re-analysis in 2021. Original survey results are presented in OF 1643. A total of 1,179 lake sediment samples were re-analyzed, covering an area of 18,000 km2, averaging a density of 1 sample per 13 km2. Samples were measured for 65 elements via modified aqua-regia - ICP-MS. To ensure high quality data, the geochemical data was evaluated for contamination, accuracy, precision and fitness-for-purpose. QA/QC results have identified a number of elements to be monitored carefully for future analyses. Overall, the data is of good quality.
APA, Harvard, Vancouver, ISO, and other styles
5

Bourdeau, J. E., M. W. McCurdy, S. J A Day, and R. G. Garrett. Regional lake sediment geochemical data from north-central Saskatchewan (NTS 074-A, B, G, and H): reanalysis data and QA/QC evaluation. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/329204.

Full text
Abstract:
This report presents the geochemical data, quality assurance and quality control (QA/QC) results of the re-analysis of lake sediment samples collected from north-central Saskatchewan (NTS 074-A, B, G and H). The original lake survey was conducted in 1986 and the re-analysis in 2021. Original survey results are presented in OF1359. A total of 1,290 lake sediment samples were re-analyzed, covering an area of 17,000 km2, averaging a density of 1 sample per 13 km2. Samples were measured for 65 elements via modified aqua-regia - ICP-MS and 35 elements via INA analysis. To ensure high quality data, the geochemical data was evaluated for contamination, accuracy, precision and fitness-for-purpose. QA/QC results have identified a number of elements to be monitored carefully for future analyses. Overall, the data are of good quality.
APA, Harvard, Vancouver, ISO, and other styles
6

Dixon, K. L. QA/QC Documentation Updates for Software and Data. Office of Scientific and Technical Information (OSTI), February 2017. http://dx.doi.org/10.2172/1423996.

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

McNeil, R. J., and R. G. Garrett. Soil sample preparation, analytical techniques and QA/QC. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2011. http://dx.doi.org/10.4095/287963.

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

McCurdy, M. W., J. M. Rice, H E Campbell, and R. C. Paulen. Regional lake sediment geochemical data from east-central Labrador (NTS 013-I, 013-J, 013-K 013-N, and 013-O): reanalysis data and QA/QC evaluation. Natural Resources Canada/CMSS/Information Management, 2023. http://dx.doi.org/10.4095/331526.

Full text
Abstract:
This report presents the geochemical data, quality assurance and quality control (QA/QC) results of the reanalysis of lake sediment samples collected from east-central Labrador (NTS 013-I, 013-J, 013-K, 013- N, and 013-O). The original lake surveys were conducted in 1977, 1978, 1983, 1987 and 1992, and the reanalysis was initiated in 2022. Original survey results are presented in Geological Survey of Canada open files 513, 558, 997, 1636, 1637, 2645, 2646, 2648, and 2650. Lake sediments from 3 736 archived site samples were re-analyzed, covering an approximate area of 44 000 km2, with an average density of 1 sample per 18 km2. Samples were measured for 65 elements via modified aqua-regia - ICP-MS. To ensure high quality geochemical data, the data were evaluated for accuracy, precision, and fitness-forpurpose. QA/QC results have identified several elements to be monitored carefully for future analyses.
APA, Harvard, Vancouver, ISO, and other styles
9

Innis, B. E. QA/QC requirements for physical properties sampling and analysis. Office of Scientific and Technical Information (OSTI), July 1993. http://dx.doi.org/10.2172/10175023.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Kumar, Srinath Shiv, Dulcy M. Abraham, Hamed Zamenian, Bhavik Ranka, and Prieston Lobo. Warranty Utility Cut Repairs (QC/QA of Utility Cut Repairs). Purdue University, March 2019. http://dx.doi.org/10.5703/1288284316780.

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