Готові списки джерел за темами / DCDM

Добірка наукової літератури з теми "DCDM"

Автор: Grafiati
Опубліковано: 14 березня 2023

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Статті в журналах з теми "DCDM"

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Chen, Xin Qiao, and Lin Tang. "Design of Optical Fiber Transmission System Based on Absolute Polar Duty Cycle Division Multiplexing (APDCDM)." Advanced Materials Research 989-994 (July 2014): 3583–86. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.3583.

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This paper propose a new multiplexing technique which use the bipolar RZ signal to realize duty cycle division multiplexing (DCDM) ,we call it Absolute Polar Duty Cycle Division Multiplexing (APDCDM).Multiplexing and demultiplexing principle of APDCDM are analyzed. Here we have designed a optical fiber transmission system based on APDCDM of three users by Joint simulation with Optisystem and Matlab. Simulation result shows the feasibility of this system. By the analysis of signal energy, explain APDCDM can carry more users than DCDM.
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Mahdiraji, G. A., M. K. Abdullah, A. M. Mohammadi, A. F. Abas, M. Mokhtar, and E. Zahedi. "Duty-cycle division multiplexing (DCDM)." Optics & Laser Technology 42, no. 2 (March 2010): 289–95. http://dx.doi.org/10.1016/j.optlastec.2009.07.007.

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3

Wang, Dongwei, Faqiang Li, Xiao Chen, Huaqiao Li, Wei Chen, and Peng Zhang. "Effect of Two Graphene Coatings on the Friction and Wear of Sliding Electrical Contact Interface." Lubricants 10, no. 11 (November 12, 2022): 305. http://dx.doi.org/10.3390/lubricants10110305.

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Two kinds of graphene coatings are obtained by the graphene drop-coating drying method (DCDM) and the coating graphene conductive adhesive (CGCA). The effects of these two kinds of graphene coatings on the friction, wear, and voltage signals of the electrical contact interface are explored. The test results show that the presence of the graphene coating can effectively reduce the friction coefficient and friction force, and the graphene coating prepared by the DCDM possesses the best ability in reducing the friction coefficient. Although the presence of the graphene coating will lead to the increase in interface contact voltage at the initial stage, the voltage signal gradually becomes stable with the progress of friction and wear, suggesting that the graphene coating will not affect the stability of sliding electrical contact. Wear analysis results show that the graphene coating prepared by the DCDM has a good anti-wear effect, and the graphene particles in the abrasion area play the role of solid lubrication. Finite element analysis results show that the graphene coating will generate thermal expansion when electric current is applied, accordingly avoid the direct contact between the metal substrate, and, thus, reduce the interface friction and alleviate the wear degree of interface. However, the normal force fluctuation of the interface may increase.
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4

Alvi, S., T. Brinckmann, M. Gerbino, M. Lattanzi, and L. Pagano. "Do you smell something decaying? Updated linear constraints on decaying dark matter scenarios." Journal of Cosmology and Astroparticle Physics 2022, no. 11 (November 1, 2022): 015. http://dx.doi.org/10.1088/1475-7516/2022/11/015.

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Abstract The stability of particles in the cosmic soup is an important property that can affect the cosmic evolution. In this work, we update the constraints on the decaying cold dark matter scenario, when the decay products are effectively massless. We assume, as a base case, that all of dark matter is unstable and it can decay on cosmological time scales. We then extend the analysis to include the scenario where only a fraction of dark matter is unstable, while the remaining part is composed of the standard, stable, dark matter. We consider observations of cosmological probes at linear scales, i.e., Planck 2018 cosmic microwave background temperature, polarization, and lensing measurements, along with geometrical information from baryon acoustic oscillation (BAO) measurements from SDSS DR7, BOSS DR12, eBOSS DR16 and 6dFGS, to derive conservative constraints on the dark matter decay rate. We consider these dataset separately, to asses the relative constraining power of each dataset, as well as together to asses the joint constraints. We find the most stringent upper limit on the decay rate of decaying cold dark matter particles to be ΓDCDM < 0.129 × 10-18 s-1 (or, equivalently, the dark matter lifetime τ DCDM > 246 Gyr) at 95% C.L. for the combination of Planck primary anisotropies, lensing and BAO. We further explore one-parameter extensions of our baseline DCDM model. Namely, we vary the sum of neutrino masses, the curvature density parameter, and the tensor-to-scalar ratio along with the DCDM parameters. When varying the tensor-to-scalar ratio we also add data from the BICEP/Keck experiment.
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Khanna, Naina, Ayush Jouhari, and Dr Soni Changlani. "Analysis of 100Gbps Based Optical AP-DCDM Network." IJIREEICE 3, no. 4 (April 15, 2015): 52–54. http://dx.doi.org/10.17148/ijireeice.2015.3425.

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Khanna, Naina, Ayoush Johari, and Dr Soni Changlani. "Design of =100Gbps Based Optical AP-DCDM Network." IJARCCE 4, no. 4 (April 30, 2015): 659–61. http://dx.doi.org/10.17148/ijarcce.2015.44152.

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7

Khan, Asim, Umair Nawaz, Anwaar Ulhaq, and Randall W. Robinson. "Real-time plant health assessment via implementing cloud-based scalable transfer learning on AWS DeepLens." PLOS ONE 15, no. 12 (December 17, 2020): e0243243. http://dx.doi.org/10.1371/journal.pone.0243243.

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The control of plant leaf diseases is crucial as it affects the quality and production of plant species with an effect on the economy of any country. Automated identification and classification of plant leaf diseases is, therefore, essential for the reduction of economic losses and the conservation of specific species. Various Machine Learning (ML) models have previously been proposed to detect and identify plant leaf disease; however, they lack usability due to hardware sophistication, limited scalability and realistic use inefficiency. By implementing automatic detection and classification of leaf diseases in fruit trees (apple, grape, peach and strawberry) and vegetable plants (potato and tomato) through scalable transfer learning on Amazon Web Services (AWS) SageMaker and importing it into AWS DeepLens for real-time functional usability, our proposed DeepLens Classification and Detection Model (DCDM) addresses such limitations. Scalability and ubiquitous access to our approach is provided by cloud integration. Our experiments on an extensive image data set of healthy and unhealthy fruit trees and vegetable plant leaves showed 98.78% accuracy with a real-time diagnosis of diseases of plant leaves. To train DCDM deep learning model, we used forty thousand images and then evaluated it on ten thousand images. It takes an average of 0.349s to test an image for disease diagnosis and classification using AWS DeepLens, providing the consumer with disease information in less than a second.
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8

Polycarpo, G. V., V. C. Cruz, N. C. Alexandre, V. B. Fascina, I. M. G. P. Souza, J. C. M. Cravo, R. Albuquerque, J. R. Sartori, and A. C. Pezzato. "Effect of lipid sources and inclusion levels in diets for broiler chickens." Arquivo Brasileiro de Medicina Veterinária e Zootecnia 66, no. 2 (April 2014): 519–28. http://dx.doi.org/10.1590/1678-41626629.

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This research aimed to evaluate the interactions and effects of 2 and 4% addition levels of poultry slaughterhouse fat (chicken tallow) and soybean oil in diets for broiler chickens. Two experiments were carried out using one-day-old male Cobb chicks in an entirely random design with a 2x2 factorial scheme. In the first experiment, 560 chicks were used to evaluate performance and carcass characteristics. In the second experiment, 100 chicks were used to determine the nutrient digestibility, dietary energy utilization and the lipase and amylase pancreatic activity. There was no interaction between the fat sources and the addition levels for any of the analyzed variables, except for the digestibility coefficient of dry matter (DCDM), which was higher in diets added with 2% soybean oil when compared to chicken tallow. The addition of 4% fat in the diet, regardless of fat source, improved the digestibility coefficient of ethereal extract (DCEE) and increased weight gain and feed intake. Moreover, in the initial phase, the addition of 4% fat to the diet increased lipase activity when compared to diets with 2% addition, and a positive correlation between DCEE and pancreatic lipase activity was observed. In conclusion, there is no interaction between fat sources and addition levels, except for DCDM. Carcass characteristics are not influenced by any of the studied factors. The addition of 4% fat increases pancreatic lipase activity and improves DCEE, resulting in greater weight gain, regardless of the tested fat source, making chicken tallow a great alternative to soybean oil.
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9

Guo, Dongming. "DIGITAL CONCURRENT DESIGN AND MANUFACTURING (DCDM) METHODS FOR IDEAL FUNCTIONAL MATERIALS COMPONENTS (IFMC)." Chinese Journal of Mechanical Engineering 37, no. 05 (2001): 7. http://dx.doi.org/10.3901/jme.2001.05.007.

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10

Vehovszky, Á., C. J. H. Elliott, E. E. Voronezhskaya, L. Hiripi, and K. Elekes. "Octopamine: a new feeding modulator in Lymnaea." Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences 353, no. 1375 (October 29, 1998): 1631–43. http://dx.doi.org/10.1098/rstb.1998.0315.

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The role of octopamine (OA) in the feeding system of the pond snail, Lymnaea stagnalis , was studied by applying behavioural tests on intact animals, and a combination of electrophysiological analysis and morphological labelling in the isolated central nervous system. OA antagonists phentolamine, demethylchlordimeform (DCDM) and 2–chloro–4–methyl–2–(phenylimino)–imidazolidine (NC–7) were injected into intact snails and the sucrose–induced feeding response of animals was monitored. Snails that received 25–50 mg kg -1 phentolamine did not start feeding in sucrose, and the same dose of NC–7 reduced the number of feeding animals by 80–90% 1–3 hours after injection. DCDM treatment reduced feeding by 20–60%. In addition, both phentolamine and NC–7 significantly decreased the feeding rate of those animals that still accepted food after 1–6 hours of injection. In the central nervous system a pair of buccal neurons was identified by electrophysiological and morphological criteria. After double labelling (intracellular staining with Lucifer yellow followed by OA–immunocytochemistry) these neurons were shown to be OA immunoreactive, and electrophysiological experiments confirmed that they are members of the buccal feeding system. Therefore the newly identified buccal neurons were called OC neurons (putative OA containing neurons or OAergic cells). Synchronous intracellular recordings demonstrated that the OC neurons share a common rhythm with feeding neurons either appearing spontaneously or evoked by intracellularly stimulated feeding interneurons. OC neurons also have synaptic connections with identified members of the feeding network: electrical coupling was demonstrated between OC neurons and members of the B4 cluster motoneurons, furthermore, chemically transmitted synaptic responses were recorded both on feeding motoneurons (B1, B2 cells) and the SO modulatory interneuron after the stimulation of OC neurons. However, elementary synaptic potentials could not be recorded on the follower cells of OC neurons. Prolonged (20 to 30 s) intracellular stimulation of OC cells activated the buccal feeding neurons leading to rhythmic activity pattern (fictive feeding) in a way similar to OA applied by perfusion onto isolated central nervous system (CNS) preparations. Our results suggest that OA acts as a modulatory substance in the feeding system of Lymnaea stagnalis and the newly identified pair of OC neurons belongs to the buccal feeding network.
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Більше джерел

Дисертації з теми "DCDM"

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Kraus, Edwin. "Interworking methodologies for DCOM and CORBA." [Johnson City, Tenn. : East Tennessee State University], 2003. http://etd-submit.etsu.edu/etd/theses/available/etd-1104103-205221/unrestricted/KrausE110503b.pdf.

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Анотація:
Thesis (M.S.)--East Tennessee State University, 2003.
Title from electronic submission form. ETSU ETD database URN: etd-1104103-205221. Includes bibliographical references. Also available via Internet at the UMI web site.
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2

Barbagallo, Mariano. "HV Interleaved Multiphase DcDc Buck-Boost Converter." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.

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Анотація:
in electric vehicle (ev) systems, bi-directional dc-dc converters are used to interface the rechargeable energy storage system (ress) such as the battery bank with the high voltage dc-link of the inverter. currently multi-cell batteries used in automotive systems, such as ev or hev, are subject to a higher failure rate than single cell batteries. the more cells are used in series, the greater the opportunities to fail and the worse the reliability. when a cell has failed the entire string or even worse the battery must be replaced, which is extremely costly [1]. so, to have less cells in series increases the reliability of the system, which also leads to a lower voltage of the dc link. for this reason and many others, in a hybrid or electric vehicle powertrain, a boost dc-dc converter enables optimization of the battery system. this work aims to investigate all the benefits that come with interleaving technique in dc-dc converters for automotive systems. indeed, these kind of converters for use in high-performance and high-power applications have received increasing interest in recent years. in particular this research work, done with sevcon ltd focuses on the theory behind bi-directional multiphase interleaved (imc) converter and how it could be used to interface a rechargeable energy storage system (ress) to the powertrain of a hybrid or electric vehicle. more specifically, it was investigated if it is possible to use (after appropriate hardware and software amendments) a standard three phase ac motor inverter as a multiphase interleaved converter. for this purpose two motor controller, produced by sevcon have been analysed. both the gen4 size 10 and the hvlp inverters were considered for use as a dc-dc converter. the voltage can step up or down based on the power flow direction. each phase is indeed a bi-directional buck or boost converter, which is composed of a bridge of power switches and inductor.
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3

Roque, Vitor Manuel Gomes. "Arquitecturas distribuídas cliente/servidor : CORBA, DCOM e JavaRMI." Master's thesis, Universidade de Aveiro, 1999. http://hdl.handle.net/10773/13036.

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Mestrado em Engenharia Electrónica e Telecomunicações
Na era das comunicações e da multimédia, as Arquitecturas Distribuídas Cliente/Servidor têm vindo a ganhar cada vez mais representatividade no panorama actual do desenvolvimento de aplicações. Verbas avultadas têm sido investidas pelas empresas desenvolventes deste tipo de tecnologia de forma a melhorar o mais possível e no menor espaço de tempo as suas plataformas com o intuito de ganhar a maior representatividade possível na área da computação distribuída. A presente dissertação centra-se precisamente na análise de três das mais importantes arquitecturas distribuídas cliente/servidor disponíveis actualmente no mercado, nomeadamente as arquitecturas CORBA, DCOM e JavaRMI. A escolha destas arquitecturas não foi aleatória e teve como base a sua importância no mercado actual. A primeira - a CORBA - por ser fomentada pelo OMG, organização internacional formada por mais de 800 membros, a segunda - o DCOM - pela importância da empresa que a desenvolve, a Microsoft, devido ao peso desta no mundo da informática e a terceira - a JavaRMI - pela crescente popularidade da linguagem Java. Nesta análise são focados os pontos mais importantes de cada uma das arquitecturas e como é que estes pontos podem ser factores decisivos na escolha das plataformas por parte das organizações. Neste sentido, o segundo capítulo desta dissertação faz uma retrospectiva de tecnologias até se atingir o estado actual, as arquitecturas distribuídas cliente/servidor. Nos terceiro, quarto e quinto capítulos são abordados de forma sucinta as três arquitecturas CORBA, DCOM e JavaRMI respectivamente. No sexto capítulo é apresentada uma comparação das funcionalidades das três arquitecturas no que respeita a: 􀂃 Interoperabilidade. 􀂃 Fiabilidade. 􀂃 Maturidade da Plataforma. Finalmente no sétimo capítulo são apresentadas algumas das conclusões retiradas ao longo desta dissertação.
In the communication and multimedia era, Distributed Client/Server Architectures has come to have more and more representation in the current panorama of application development. Large amounts have been invested by companies that develop this kind of technology in order to improve their platforms as quickly and as much as possible with the objective of gaining as much representation as possible in the area of distributed computation. This dissertation is focussed precisely on the analysis of three of the largest distributed client/server architectures currently available on the market, namely CORBA, DCOM, and JavaRMI. The choice of these architectures was not random but, rather, based on their significance on the current market: the first, CORBA, for being supported by the OMG, an international organization of more than 800 members; the second, DCOM, for the significance of the company that is developing it, Microsoft, due to its weight in the computer world; and the third, JavaRMI, for the increasing popularity of Java language. In this analysis, the most important points of each of the architectures are focussed on, exploring how each of these points can be decisive factors in the choice of platforms on the part of organizations. Accordingly, the second chapter of this dissertation gives a retrospective view of technology up to the current state, distributed client/server architectures. In the third, fourth, and fifth chapters, the three architectures, CORBA, DCOM and JavaRMI, respectively, are dealt with succinctly. In the sixth chapter, a comparison of the functionality of the three architectures is presented with respect to: 􀂃 Interoperability. 􀂃 Reliability. 􀂃 Platform Maturity. Finally, in the seventh chapter, some of the conclusions drawn throughout the dissertation are presented.
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4

Childs, Edward William. "The roles of the locust DCMD in collision detection." Thesis, University of Newcastle Upon Tyne, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.300191.

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5

Vaško, Martin. "Systém pro podporu sledování a řízení IT dle DCMM." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2021. http://www.nusl.cz/ntk/nusl-445477.

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Developeri v IT tíme vidia IT manažment ako vedúcich ich oddelenia a IT projektov. Úzkoprsosť manažmentu spoločnosti je často videná ako problém v riadení IT. Avšak v DCMM terminológii sa od vedúcich manažmentu vyžaduje rovnocenná diskusia medzi oboma účastníkmi. Pri rovnocennej diskusii to má za pozitívny dopad na pracovníkov IT a riešenia IT projektu, než pri nerovnocennej komunikácií. Navrhovaný systém umožňuje uživateľom (IT manažérom) manažovať a zobrazovať zdroje IT oddelenia, aktuálny stav projektu a aktuálny pohľad na manažment IT v DCMM perspektíve. Hlavné zameranie je kladené na extrakciu záznamov z rôznych nástrojov, ktoré sú spojené do príbehov. Tieto príbehy vytvárajú reťazec navzájom súvisiacich krokov, ktoré majú buď pozitívny alebo negatívny dopad na podnikanie. DCMM metriky boli realizované pre pomoc IT manažmentu aby sa vďaka ním vedel rozhodnúť ísť v smere nových myšlienok alebo sa držať ďaleko od inovácií. Pri použití nástroja, je manažmentu podniku ľahšie určiť, či DCMM pomôže danej spoločnosti byť inovatívna alebo či sa má rozhodnúť zostať v užívaní aktuálneho manažérskeho modelu. Na základe aktuálnych a predošlých udalostí odohraných vo firme, ktoré sa zobrazia je nutné vykonať manažérsku analýzu pre zistenie nových vedomostí.
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6

Prado, Monja Silvia Sales. "Tradução e adaptação cultural do Developmental Coordination Disorder Questionnaire (DCDQ)." Universidade Federal de Minas Gerais, 2007. http://hdl.handle.net/1843/MSMR-777JBN.

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In Brazil, there are no available instruments for the detection of children with developmental coordination disorders (DCD), which impairs its diagnosis and treatment. The cultural adaptation of the Developmental Coordination Disorder Questionnaire (DCDQ), a questionnaire for parents, represents an attempt to develop an instrument for the detection of children with motor coordination problems in Brazil. Aims of the present investigation were a) to translate the DCDQ to Portuguese and adapt it to the Brazilian culture; b) to examine the comprehension and adequacy of DCDQ-Brazil for the Brazilian population through the experimental application of the translated test; c) investigate the psychometrical qualities of the adapted questionnaire; d) indicate the instruments limitations and, if necessary, propose the review or exclusion of items to make it clinically useful for the DCD detection among Brazilian children.Methods included translation of the DCDQ according to internationally used procedures, followed by the use of the translated questionnaire DCDQ-Brazil in a sample of 45 children, 15 of which showed coordination problems and 30 with typical developmental patterns. Data analysis indicated that items 3) and 13) were not efficient for the discrimination of motor coordination problems and did not represent typical aspects of the Brazilian culture. Two other versions of the questionnaire, A and B, were then created in which these items were substituted by others with better psychometrical characteristics. There was an improvement in test-retest reliability (from 0,953 in the original version to 0,973 in both versions A and B) and in internal consistency (from 0,915 in the original version to 0,926 in version A and 0,918 in version B). Sensitivity (0,73) and specificity (0,87), as well as positive prediction value (0,73) and negative prediction value (0,87) also underlined version As superiority, which should be maintained in future investigations.It was concluded that the translation process was valid and that DCDQ-Brazil, as a short instrument with simple applicability, is potentially useful for the detection of DCD among Brazilian children. Further research involving broader samples is necessary to verify the score patterns of Brazilian children in different ages and to determine cut-off scores that allow a more reliable classification of children for diagnostic evaluation and epidemiological studies.
No Brasil, não existem instrumentos para a detecção de crianças com Transtorno do Desenvolvimento da Coordenação TDC, o que limita seu diagnóstico e tratamento. A adaptação cultural do Developmental Coordination Disorder Questionnaire DCDQ, um questionário para pais, representa uma tentativa de disponibilizar um instrumento para a detecção de crianças com problemas de coordenação motora no Brasil. Os objetivos do presente estudo foram (a) fazer a tradução para a Língua Portuguesa e a adaptação para a cultura brasileira do DCDQ, (b) examinar a compreensão e adequação do DCDQ-Brasil para a população brasileira, por meio da aplicação experimental do teste traduzido, (c) examinar as qualidades psicométricas do questionário adaptado, e (d) indicar as limitações do instrumento e, se necessário, propor a revisão ou a exclusão de itens, de forma a torná-lo clinicamente útil para detecção de TDC em crianças brasileiras. A metodologia incluiu a tradução do DCDQ, segundo procedimentos usados internacionalmente, seguida da aplicação do questionário traduzido DCDQ-Brasil em uma amostra de 45 crianças, sendo 15 com problemas de coordenação e 30 com desenvolvimento típico. Na análise dos dados, observou-se que os items 3) e 13), além de não apresentarem boa discriminação para problemas de coordenação motora, não representavam aspectos típicos da cultura brasileira. Foram, então criadas as versões A e B do questionário, nas quais esse itens foram substituídos por outros de melhores qualidades psicométricas. Houve melhoria na confiabilidade teste-reteste, que passou de 0,953 na versão original para 0,973 na versão A e 0,973 na versão B, e na consistência interna, que na versão original era 0,915 e passou para 0,926 na versão A e 0,918 na versão B. Dados de sensibilidade (0,73) e especificidade (0,87), valor de predição positivo (0,73) e negativo (0,87) também indicam superioridade da versão A, que deve ser mantida em estudos futuros. Conclui-se que o processo de tradução foi válido e que o DCDQ-Brasil, como instrumento curto e de fácil aplicação, tem bom potencial para ser usado na detecção do TDC em crianças brasileiras. Futuros estudos, com amostragem mais ampla, serão necessários para verificar o padrão de escores de crianças brasileiras nas diferentes idades e determinar pontos de corte, que permitam a triagem mais confiável de crianças para avaliação diagnóstica e estudos epidemiológicos.
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7

Williams, Jacqueline Louise, and jacqueline williams@mcri edu au. "Motor imagery and developmental coordination disorder (DCD)." RMIT University. Health Sciences, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080617.141139.

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Developmental Coordination Disorder (DCD) is characterised by impairments to motor control and learning, the cause of which remains unclear. Recently, researchers have used cognitive neuroscientific approaches to explore the basis of poor coordination in children, with one hypothesis suggesting that an internal modelling deficit (IMD) is one of the underlying causes of DCD. The aim of this thesis was to further test the IMD hypothesis using a motor imagery paradigm - the mental rotation of hands. Versions of this task were used in all studies to assess motor imagery ability, with an additional whole-body task used in Studies 2 and 3. Further, an alphanumeric rotation task was used in Studies 1 and 2 to assess visual imagery ability. Studies 1 and 2 provided varying levels of support for the IMD hypothesis. In Study 1, only a subgroup of DCD children performed differently from other children in the study on the hand tasks, but tighter task constraints in Study 2 led to overall group differences between DCD and controls in terms of accuracy. The DCD group were also significantly less accurate than controls in the whole-body task, but there were no group differences in either Study 1 or 2 on the visual imagery task. Interestingly, in Study 2, there was an indication that children with severe levels of motor impairment were less accurate than children with less severe motor impairment, suggesting that motor impairment level could play a role in the severity of motor imagery deficits. Study 3 was designed to explore the impact of motor impairment severity on motor imagery ability further. The results confirmed that children with severe DCD had greater motor imagery impairment than children with mild DCD - children with severe DCD performed less accurately than both controls and those with mild DCD in the hand task with instructions and the controls in the whole-body task. Further, those children with mild DCD were able to respond somewhat to motor imagery instructions, whereas those with severe DCD were not. This study provided support to the IMD hypothesis, though the deficit was shown to be dependent on a number of factors. Chapter 5 presents a reasoned account of these various findings and their implications are discussed. It is concluded that motor imagery deficits are evident in many children with DCD, but more so in children with severe motor impairment. A general imagery deficit was ruled out based on the findings of Studies 1 and 2 which showed that visual imagery processes appear intact in children with DCD. Taken together with previous imagery and IMD studies, and related research on feedforward control in DCD, it is concluded that the deficits in motor imagery observed in this thesis are consistent with the hypothesis that an IMD is one likely causal factor in the disorder, particularly in more severe DCD. The observation of differing response patterns between children with mild and severe forms of DCD has important implications for developing a theory of DCD and for remediation.
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8

Liu, Jie. "DCD algorithm : architectures, FPGA implementations and applications." Thesis, University of York, 2008. http://etheses.whiterose.ac.uk/1629/.

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In areas of signal processing and communications such as antenna array beamforming, adaptive filtering, multi-user and multiple-input multiple-output (MIMO) detection, channel estimation and equalization, echo and interference cancellation and others, solving linear systems of equations often provides an optimal performance. However, this is also a very complicated operation that designers try to avoid by proposing different sub-optimal solutions. The dichotomous coordinate descent (DCD) algorithm allows linear systems of equations to be solved with high computational efficiency. It is a multiplication-free and division-free technique and, therefore, it is well suited for hardware implementation. In this thesis, we present architectures and field-programmable gate array (FPGA) implementations of two variants of the DCD algorithm, known as the cyclic and leading DCD algorithms, for real-valued and complex-valued systems. For each of these techniques, we present architectures and implementations with different degree of parallelism. The proposed architectures allow a trade-off between FPGA resources and the computation time. The fixed-point implementations provide an accuracy performance which is very close to the performance of floating-point counterparts. We also show applications of the designs to complex division, antenna array beamforming and adaptive filtering. The DCD-based complex divider is based on the idea that the complex division can be viewed as a problem of finding the solution of a 2x2 real-valued system of linear equations, which is solved using the DCD algorithm. Therefore, the new divider uses no multiplication and division. Comparing with the classical complex divider, the DCD-based complex divider requires significantly smaller chip area. A DCD-based minimum variance distortionless response (MVDR) beamformer employs the DCD algorithm for multiplication-free finding the antenna array weights. An FPGA implementation of the proposed DCD-MVDR beamformer requires a chip area much smaller and throughput much higher than that achieved with other implementations. The performance of the fixed-point implementation is very close to that of floating-point implementation of the MVDR beamformer using direct matrix inversion. When incorporating the DCD algorithm in recursive least squares (RLS) adaptive filter, a new efficient technique, named as the RLS-DCD algorithm, is derived. The RLS-DCD algorithm expresses the RLS adaptive filtering problem in terms of auxiliary normal equations with respect to increments of the filter weights. The normal equations are approximately solved by using the DCD iterations. The RLS-DCD algorithm is well-suited to hardware implementation and its complexity is as low as O(N2) operations per sample in a general case and O(N) operations per sample for transversal RLS adaptive filters. The performance of the RLS-DCD algorithm, including both fixed-point and floating-point implementations, can be made arbitrarily close to that of the floating-point classical RLS algorithm. Furthermore, a new dynamically regularized RLS-DCD algorithm is also proposed to reduce the complexity of the regularized RLS problem from O(N^3) to O(N^2) in a general case and to O(N) for transversal adaptive filters. This dynamically regularized RLS-DCD algorithm is simple for finite precision implementation and requires small chip resources.
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9

Yvert, Gaëtan. "Modélisation de l'organisation fonctionnelle de la lecture chez le sujet sain : Etude en EEG-HR par reconstruction de sources et modèles causaux dynamiques. Applications aux patients épileptiques." Thesis, Grenoble, 2012. http://www.theses.fr/2012GRENS044/document.

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L'écriture et donc a fortiori la lecture est une invention trop récente pour que le substrat neuronal sous tendant ce processus cognitif ait évolué pour se spécialiser dans la reconnaissance visuelle des mots. Ainsi les régions fonctionnelles de la lecture repose à la fois sur les aires corticales dédiées au langage et à la reconnaissance visuelle des objets. Cependant, l'identification complète nécessite au delà du décryptage orthographique, le décodage phonologique ainsi que la récupération de la sémantique. De très nombreuses études en neuroimagerie et en particulier l'IRM se sont intéressées à la localisation des différentes aires fonctionnelles sous tendant ces différentes taches cognitives. Cependant la faible résolution temporelle de l'IRM n'a pas permis de mettre en évidence la dynamique d'intégration au sein du réseau fonctionnel de la lecture. Les enregistrements électrophysiologiques, comme l'EEG, permettent la mise en évidence de la dynamique neuronale grâce à son excellente résolution temporelle. Cependant, la localisation des aires corticales ayant générés les courants de scalp est un problème méthodologique très complexe. Depuis une dizaine d'année, de nombreuses avancées majeures ont été effectuées dans la localisation de source en utilisant des méthodologies nouvelles permettant ainsi de mettre en évidence à la fois les régions fonctionnelles impliquées dans le traitement cognitif ainsi que la dynamique temporelle d'intégration au sein du réseau. Par ailleurs, d'une vision localisationniste, les recherches actuelles tendent vers une vision hodotopique où la fonction d'une région dépend plus de ses connections avec les autres régions du réseau que de sa localisation précise. De nouvelles méthodologies comme les modèles causaux dynamiques permettent de mettre en évidence la structure du réseau et de son fonctionnement. L'objectif de cette thèse a été d'utiliser les derniers outils méthodologiques mis au point afin non seulement de mettre en évidence le réseau de la reconnaissance visuelle des mots mais aussi de proposer un modèle théorique de l'intégration fonctionnelle. En particulier, nous avons mis en évidence l'importance des connexions feedback sur le traitement bottom up de la reconnaissance visuelle des mots à l'instar des objets. Par ailleurs, nous avons appliqué ces méthodologies chez le patient épileptique afin de mettre en évidence les réorganisations fonctionnelles induites par la présence d'un foyer au niveau des régions temporales gauche
Writing and then a fortiori reading is a too recent invention for evolution to develop a specialized neuronal substrate sustaining the visual word form recognition. Thereby functional region underlying reading process rest on cortical area dedicate to language and visual recognition of objects. However, complete identification of a word requires beyond the orthographic decryption, phonological decoding and semantic recovery. Numerous neuroimaging studies and in particular with fMRI have tried to localize the functional regions sustaining these different cognitive processes. Nonetheless, the weak temporal resolution of fMRI do not allowed revealing the dynamic of integration within the reading network. Electrophysiological recording as EEG permit to show the neuronal dynamic thanks to its excellent temporal resolution. However, localization of the cortical area having generate the scalp electrical field is a complex methodological issue. Since a decade, numerous breakthroughs in methodology allow not only to localize functional region but also the temporal dynamic of their interaction. Moreover, from a localisationnist point of view, current research have adopted an hodotopic vision supposing that the function of a region is more depend of its connectivity with the other region of the network than of its precise location. New methodologies as dynamic causal modeling permit to show the network structure and its dynamic integration. The goal of this thesis has been to use latest methodological development to reveal not only the network of the word recognition, but also to propose a functional model of the integration of the visual stimuli within this network. In particular, we have shown the importance of feedback connection on bottom up processing in word recognition as it has been shown for objects recognition. In addition, we have applied those methodologies to epileptic patients to reveal the influence of a left temporal lesion on the functional reorganization of the reading network
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10

Khalid, Shehla. "Towards Data Governance for International Dementia Care Mapping (DCM). A Study Proposing DCM Data Management through a Data Warehousing Approach." Thesis, University of Bradford, 2010. http://hdl.handle.net/10454/5226.

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Information Technology (IT) plays a vital role in improving health care systems by enhancing the quality, efficiency, safety, security, collaboration and informing decision making. Dementia, a decline in mental ability which affects memory, concentration and perception, is a key issue in health and social care, given the current context of an aging population. The quality of dementia care is noted as an international area of concern. Dementia Care Mapping (DCM) is a systematic observational framework for assessing and improving dementia care quality. DCM has been used as both a research and practice development tool internationally. However, despite the success of DCM and the annual generation of a huge amount of data on dementia care quality, it lacks a governance framework, based on modern IT solutions for data management, such a framework would provide the organisations using DCM a systematic way of storing, retrieving and comparing data over time, to monitor progress or trends in care quality. Data Governance (DG) refers to the implications of policies and accountabilities to data management in an organisation. The data management procedure includes availability, usability, quality, integrity, and security of the organisation data according to their users and requirements. This novel multidisciplinary study proposes a comprehensive solution for governing the DCM data by introducing a data management framework based on a data warehousing approach. Original contributions have been made through the design and development of a data management framework, describing the DCM international database design and DCM data warehouse architecture. These data repositories will provide the acquisition and storage solutions for DCM data. The designed DCM data warehouse facilitates various analytical applications to be applied for multidimensional analysis. Different queries are applied to demonstrate the DCM data warehouse functionality. A case study is also presented to explain the clustering technique applied to the DCM data. The performance of the DCM data governance framework is demonstrated in this case study related to data clustering results. Results are encouraging and open up discussion for further analysis.
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Книги з теми "DCDM"

1

Thai, Thuan L. Learning DCOM. Beijing: O'Reilly, 1999.

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Rock-Evans, R. DCOM explained. Boston: Digital Press, 1998.

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3

DÇM dosyası. Cağaloğlu, İstanbul: Alan Yayıncılık, 1986.

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4

Marshall, Brain, ed. Understanding DCOM. Upper Saddle River, NJ: Prentice Hall, 1999.

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5

Randy, Morin, and Chahín Jesús, eds. COM/DCOM unleashed. [Indianapolis, Ind.?]: Sams, 1999.

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6

Professional DCOM application development. Birmingham, [England]: Wrox Press, 1998.

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7

Renz, Peter, and Bernhard Wicht. Integrated Hybrid Resonant DCDC Converters. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-63944-0.

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8

Ma, Fei. Application development with COM/DCOM. Oxford: Oxford Brookes University, 2002.

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9

Redmond, Frank E. DCOM: Microsoft Distributed Component Object Model. Foster City, CA: IDG Books Worldwide, 1997.

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10

Doss, George M. DCOM networking with Visual J++ 6.0. Plano, Tex: Wordware Pub., 1999.

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Частини книг з теми "DCDM"

1

Gokhale, Aniruddha. "DCOM." In Encyclopedia of Database Systems, 1–2. New York, NY: Springer New York, 2016. http://dx.doi.org/10.1007/978-1-4899-7993-3_1202-2.

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2

Gokhale, Aniruddha. "DCOM." In Encyclopedia of Database Systems, 757. Boston, MA: Springer US, 2009. http://dx.doi.org/10.1007/978-0-387-39940-9_1202.

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Gokhale, Aniruddha. "DCOM." In Encyclopedia of Database Systems, 1007–8. New York, NY: Springer New York, 2018. http://dx.doi.org/10.1007/978-1-4614-8265-9_1202.

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4

Metze, Dieter, Tam Nguyen, Birgit Haack, Alexander K. C. Leung, Noriko Miyake, Naomichi Matsumoto, A. J. Larner, et al. "DCM." In Encyclopedia of Molecular Mechanisms of Disease, 496. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-29676-8_7472.

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5

Theobald, Patrick. "Der DCOM-Connector." In SAP R/3® Kommunikation mit RFC und Visual Basic, 125–61. Wiesbaden: Vieweg+Teubner Verlag, 2003. http://dx.doi.org/10.1007/978-3-322-93963-0_5.

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Theobald, Patrick. "Der DCOM-Connector." In SAP R/3® Kommunikation mit RFC und Visual Basic, 127–63. Wiesbaden: Vieweg+Teubner Verlag, 2004. http://dx.doi.org/10.1007/978-3-663-01612-0_5.

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Renz, Peter, and Bernhard Wicht. "Introduction." In Integrated Hybrid Resonant DCDC Converters, 1–8. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-63944-0_1.

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Renz, Peter, and Bernhard Wicht. "Motivation and Fundamentals." In Integrated Hybrid Resonant DCDC Converters, 9–36. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-63944-0_2.

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9

Renz, Peter, and Bernhard Wicht. "Multi-Ratio Resonant Switched-Capacitor Converters." In Integrated Hybrid Resonant DCDC Converters, 37–65. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-63944-0_3.

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10

Renz, Peter, and Bernhard Wicht. "Circuit Implementation for High Efficiency." In Integrated Hybrid Resonant DCDC Converters, 67–97. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-63944-0_4.

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Тези доповідей конференцій з теми "DCDM"

1

Leone, R. C., M. Nole, G. E. Hammond, and P. C. Lichtner. "Multiple Continuum Approach to Modeling Radionuclide Transport in Fractured Networks." In 3rd International Discrete Fracture Network Engineering Conference. ARMA, 2022. http://dx.doi.org/10.56952/arma-dfne-22-0045.

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Abstract Traditional discrete fracture models implementing matrix diffusion can be computationally expensive and only applicable to simplified transport problems. Upscaling to a continuum model can reduce computational burden, but models based on only a primary continuum neglect fracture-matrix interaction. PFLOTRAN, a subsurface flow and reactive transport code, simulates a secondary continuum (matrix) coupled to the primary continuum (fracture) modeled as a disconnected one-dimensional domain using a method known as the Dual Continuum Disconnected Matrix (DCDM) model. This work presents several benchmarks to compare PFLOTRAN’s DCDM model to analytical solutions and a large-scale test problem in a one cubic km fractured domain modeling a conservative tracer with diffusion of the tracer into the rock matrix. The tracer was modeled using two different methods: first, with a Discrete Fracture Network (DFN) representation, and second, using the DCDM in PFLOTRAN. We find that the DCDM representation of the upscaled fracture network produces results comparable to the DFN and analytical solutions where available, verifying this method. We then apply the DCDM model to a fractured domain considering radionuclide isotope sorption, partitioning, decay, and ingrowth and find that radionuclide retardation is enhanced when considering these additional mechanisms.
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2

Singh, Avinash, Gireesh G. Soni, Abhishek Tripathi, and Anurag Shrivastava. "Design of 3×60 Gbps DCDM based WDM system." In 2012 International Conference on Optical Engineering (ICOE). IEEE, 2012. http://dx.doi.org/10.1109/icoe.2012.6409582.

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Bai, Shi lei, Cui zhu Chen, Zhong hang Duan, Rui dong Wang, and Zhe Zhang. "The Design of Optical Fiber Transmission System Based on DCDM." In 2013 International Conference on Advanced Computer Science and Electronics Information. Paris, France: Atlantis Press, 2013. http://dx.doi.org/10.2991/icacsei.2013.85.

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4

Derahman, Mohd Noor, Kaharudin Dimyati, Amin Malek Mohammadi, and Mohamad Khazani Abdullah. "Improvement of Decision Making Protocol for Duty Cycle Division Multiplexing (DCDM) System." In 2010 Second International Conference on Future Networks (ICFN). IEEE, 2010. http://dx.doi.org/10.1109/icfn.2010.52.

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5

Mahdiraji, Ghafour Amouzad, and Ahmad Fauzi Abas. "Effect of optical filtering on the performance of 40 Gbps DCDM systems." In 2011 IEEE 2nd International Conference on Photonics (ICP). IEEE, 2011. http://dx.doi.org/10.1109/icp.2011.6106870.

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6

Sanchez, Gustavo, Ramon Fernandes, Luciano Agostini, and Cesar Marcon. "DCDM-Intra: Dynamically Configurable 3D-HEVC Depth Maps Intra-Frame Prediction Algorithm." In 2018 25th IEEE International Conference on Image Processing (ICIP). IEEE, 2018. http://dx.doi.org/10.1109/icip.2018.8451620.

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7

Tiwari, Vineet, Akash Mohan Soni, Abhishek Tripathi, and Gireesh G. Soni. "Analysis of 6×10 Gbps spectrally efficient optical AP-DCDM based communication system." In 2014 International Conference on Computer Communication and Informatics (ICCCI). IEEE, 2014. http://dx.doi.org/10.1109/iccci.2014.6921817.

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8

Mahdiraji, G. A., M. K. Abdullah, A. F. Abas, M. Mokhtar, and A. M. Mohammadi. "Analysis of the Transmission Performance of Optical Signals based on Duty Cycle Division Multiplexing (DCDM)." In 2nd Malaysia Conferenced on Photonics (MCP). IEEE, 2008. http://dx.doi.org/10.1109/nctt.2008.4814241.

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9

Abdullah, M. K., G. A. Mahdiraji, A. M. Mohammadi, M. Mokhtar, and A. F. Abas. "Duty Cycle Division Multiplexing (DCDM); A New Electrical Multiplexing Technique for High Speed Optical Communication Systems." In 2nd Malaysia Conferenced on Photonics (MCP). IEEE, 2008. http://dx.doi.org/10.1109/nctt.2008.4814240.

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10

Malekmohammadi, A., M. K. Abdullah, A. F. Abas, and G. A. Mahdiraji. "Effect of guard band on the performance of AP-DCDM technique in 40 Gb/s optical fiber communication system." In 2010 International Conference on Photonics (ICP). IEEE, 2010. http://dx.doi.org/10.1109/icp.2010.5604402.

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Звіти організацій з теми "DCDM"

1

Balenson, David M., Peter Dismore, Michael Heyman, Peter S. Kruus, and Caroline Scace. Dynamic Cryptographic Context Management (DCCM). Fort Belvoir, VA: Defense Technical Information Center, December 2000. http://dx.doi.org/10.21236/ada386812.

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2

Newell, Matthew R. UNAP DCM Theory of Operations. Office of Scientific and Technical Information (OSTI), May 2012. http://dx.doi.org/10.2172/1040816.

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3

McCall, Stacey. Document Configuration Management (DCM) Team Weapon Product Definition Group. Office of Scientific and Technical Information (OSTI), July 2022. http://dx.doi.org/10.2172/1879341.

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4

Dunsmore, Buster, and Steve Varnau. Evaluation of DCDS for Meeting the Data Collection Requirements for Software Specification, Development and Support. Fort Belvoir, VA: Defense Technical Information Center, February 1991. http://dx.doi.org/10.21236/ada268098.

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5

Caritat, P. de, and U. Troitzsch. Towards a regolith mineralogy map of the Australian continent: a feasibility study in the Darling-Curnamona-Delamerian region. Geoscience Australia, 2021. http://dx.doi.org/10.11636/record.2021.035.

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Bulk quantitative mineralogy of regolith is a useful indicator of lithological precursor (protolith), degree of weathering, and soil properties affecting various potential landuse decisions. To date, no national-scale maps of regolith mineralogy are available in Australia. Catchment outlet sediments collected over 80% of the continent as part of the National Geochemical Survey of Australia (NGSA) afford a unique opportunity to rapidly and cost-effectively determine regolith mineralogy using the archived sample material. This report releases mineralogical data and metadata obtained as part of a feasibility study in a selected pilot area for such a national regolith mineralogy database and atlas. The area chosen for this study is within the Darling-Curnamona-Delamerian (DCD) region of southeastern Australia. The DCD region was selected as a ‘deep-dive’ data acquisition and analysis by the Exploration for the Future (2020-2024) federal government initiative managed at Geoscience Australia. One hundred NGSA sites from the DCD region were prepared for X-Ray Diffraction (XRD) analysis, which consisted of qualitative mineral identification of the bulk samples (i.e., ‘major’ minerals), qualitative clay mineral identification of the <2 µm grain-size fraction, and quantitative analysis of both ‘major’ and clay minerals of the bulk sample. The identified mineral phases were quartz, plagioclase, K-feldspar, calcite, dolomite, gypsum, halite, hematite, goethite, rutile, zeolite, amphibole, talc, kaolinite, illite (including muscovite and biotite), palygorskite (including interstratified illite-smectite and vermiculite), smectite (including interstratified illite-smectite), vermiculite, and chlorite. Poorly diffracting material (PDM) was also quantified and reported as ‘amorphous’. Mineral identification relied on the EVA® software, whilst quantification was performed using Siroquant®. Resulting mineral abundances are reported with a Chi-squared goodness-of-fit between the actual diffractogram and a modelled diffractogram for each sample, as well as an estimated standard error (esd) measurement of uncertainty for each mineral phase quantified. Sensitivity down to 0.1 wt% (weight percent) was achieved, with any mineral detection below that threshold reported as ‘trace’. Although detailed interpretation of the mineralogical data is outside the remit of the present data release, preliminary observations of mineral abundance patterns suggest a strong link to geology, including proximity to fresh bedrock, weathering during sediment transport, and robust relationships between mineralogy and geochemistry. The mineralogical data generated by this study are presented in Appendix A of this report and are downloadable as a .csv file. Mineral abundance or presence/absence maps are shown in Appendices B and C to document regional mineralogical patterns.
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6

Jelsma, Dorothee, Reza Abdollahipour, Farhad Ghadiri, Fatemeh Alaei, Miriam Paloma Nieto, Zdenek Svoboda, Miguel Villa de Gregorio, Paola Violasdotter Nilsson, Dido Green, and Kamila Banatova. Evidence-based practice interventions for children and young people with Developmental Coordination Disorder - A scoping review. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, February 2023. http://dx.doi.org/10.37766/inplasy2023.2.0028.

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Review question / Objective: The aim of this review was to identify, qualify, evaluate and synthesise interventions used for children and young people with Developmental Coordination Disorder. The PCC was used to develop the review question: Population – children and young people with disorders of motor coordination aged to 25 years, not due to neurological disease or disorder eg. Cerebral Palsy. Concept - any method aimed to improve/treat/intervene in areas of motor learning, motor control, motor coordination or motor skill. Context - information on methods of delivery of interventions to consider context and cultural factors influencing delivery as well as details of intervention timing and outcomes. Primary Question: What interventions are being used for children and young people with DCD? Secondary Questions: How are these interventions being implemented? What outcomes are evident?
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Security Implications of OPC, OLE, DCOM, and RPC in Control Systems. Office of Scientific and Technical Information (OSTI), January 2006. http://dx.doi.org/10.2172/911825.

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Також вас можуть зацікавити розширені добірки на тему "DCDM" для конкретних типів джерел:
Статті в журналах Дисертації Книги
Ми пропонуємо знижки на всі преміум-плани для авторів, чиї праці увійшли до тематичних добірок літератури. Зв'яжіться з нами, щоб отримати унікальний промокод!

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