Academic literature on the topic 'Multidimensional process'

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Journal articles on the topic "Multidimensional process"

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Tomko, Mary Kay. "Recovery: A Multidimensional Process." Issues in Mental Health Nursing 9, no. 2 (January 1988): 139–49. http://dx.doi.org/10.3109/01612848809140919.

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MIZUTANI, Daijiro, Kengo OBAMA, Kiyoyuki KAITO, and Kiyoshi KOBAYASHI. "MULTIDIMENSIONAL INFRASTRUCTURE DETERIORATION PROCESS MODEL." Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management) 72, no. 1 (2016): 34–51. http://dx.doi.org/10.2208/jscejipm.72.34.

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Huang, Jih-Jeng, Gwo-Hshiung Tzeng, and Chorng-Shyong Ong. "Multidimensional data in multidimensional scaling using the analytic network process." Pattern Recognition Letters 26, no. 6 (May 2005): 755–67. http://dx.doi.org/10.1016/j.patrec.2004.09.027.

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Syuzev, V. V., E. V. Smirnova, and A. V. Proletarsky. "Algorithms of multidimensional random process simulation." Computer Optics 45, no. 4 (July 2021): 627–37. http://dx.doi.org/10.18287/2412-6179-co-770.

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The article discusses two approaches to modeling signals and processes: the method of filter construction and the trigonometric method. It is shown that the later approach is more promising, since an increase in the signal/process representation dimension mathematically means adding a term to the basis function formula, which gives access to fast simulation algorithms. Examples of algorithms for multidimensional simulation of random processes using two methods are given and a software system that implements these algorithms is described. The results provided by the software system will allow you to predict characteristics of engineering projects (accuracy and speed of modeling algorithms). Due to the high relevance of and need for fundamental research of methods and algorithms for digital transformation of the component base, the digitalization of all aspects of activity, including the synthesis of new materials, the development of new methods for designing micro- and nano-systems, the article aims to expand the scope of the spectral method of simulating multidimensional processes using original algorithmic complexes.
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Pishchukhin, Aleksandr. "Multidimensional monitoring of a streaming process." IOP Conference Series: Materials Science and Engineering 709 (January 3, 2020): 033024. http://dx.doi.org/10.1088/1757-899x/709/3/033024.

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Ibarrola, P., and R. Vélez. "Hypothesis Testing for Multidimensional Gaussian Process." Theory of Probability & Its Applications 37, no. 1 (January 1993): 142–45. http://dx.doi.org/10.1137/1137032.

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Sznitman, A. S., and S. R. S. Varadhan. "A multidimensional process involving local time." Probability Theory and Related Fields 71, no. 4 (1986): 553–79. http://dx.doi.org/10.1007/bf00699041.

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Kurpius, DeWayne J., Dale R. Fuqua, and Thaddeus Rozecki. "The Consulting Process: A Multidimensional Approach." Journal of Counseling & Development 71, no. 6 (July 8, 1993): 601–6. http://dx.doi.org/10.1002/j.1556-6676.1993.tb02249.x.

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Deslauriers, Gilles, Jacques Dubois, and Serge Dubuc. "Multidimensional Iterative Interpolation." Canadian Journal of Mathematics 43, no. 2 (April 1, 1991): 297–312. http://dx.doi.org/10.4153/cjm-1991-016-4.

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AbstractWe define an iterative interpolation process for data spread over a closed discrete subgroup of the Euclidean space. We describe the main algebraic properties of this process. This interpolation process, under very weak assumptions, is always convergent in the sense of Schwartz distributions. We find also a convenient necessary and sufficient condition for continuity of each interpolation function of a given iterative interpolation process.
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Berry, Robert Q., and Mark W. Ellis. "Multidimensional Teaching." Mathematics Teaching in the Middle School 19, no. 3 (October 2013): 172–78. http://dx.doi.org/10.5951/mathteacmiddscho.19.3.0172.

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Dissertations / Theses on the topic "Multidimensional process"

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Mohd, Yunus Mohd Yusri. "Multivariate statistical process monitoring using classical multidimensional scaling." Thesis, University of Newcastle upon Tyne, 2012. http://hdl.handle.net/10443/1495.

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A new Multivariate Statistical Process Monitoring (MSPM) system, which comprises of three main frameworks, is proposed where the system utilizes Classical Multidimensional Scaling (CMDS) as the main multivariate data compression technique instead of using the linearbased Principal Component Analysis (PCA). The conventional method which usually applies variance-covariance or correlation measure in developing the multivariate scores is found to be inappropriately used especially in modelling nonlinear processes, where a high number of principal components will be typically required. Alternatively, the proposed method utilizes the inter-dissimilarity scales in describing the relationships among the monitored variables instead of variance-covariance measure for the multivariate scores development. However, the scores are plotted in terms of variable structure, thus providing different formulation of statistics for monitoring. Nonetheless, the proposed statistics still correspond to the conceptual objective of Hotelling’s T2 and Squared Prediction Errors (SPE). The first framework corresponds to the original CMDS framework, whereas the second utilizes Procrustes Analysis (PA) functions which is analogous to the concept of loading factors in PCA for score projection. Lastly, the final framework employs dynamic mechanism of PA functions as an alternative for enhancing the procedures of the second approach. A simulated system of Continuous Stirred Tank Reactor with Recycle (CSTRwR) has been chosen for the demonstration and the fault detection results were comparatively analyzed to the outcomes of PCA on the grounds of false alarm rates, total number of detected cases and also total number of fastest detection cases. The last two performance factors are obtained through fault detection time. The overall outcomes show that the three CMDS-based systems give almost comparable performances to the linear PCA based monitoring systemwhen dealing the abrupt fault events, whereas the new systems have demonstrated significant improvement over the conventional method in detecting incipient fault cases. More importantly, this monitoring accomplishment can be efficiently executed based on lower compressed dimensional space compared to the PCA technique, thus providing much simpler solution. All of these evidences verified that the proposed approaches are successfully developed conceptually as well as practically for monitoring while complying fundamentally with the principles and technical steps of the conventional MSPM system.
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Kodali, Lata. "Extensions of Weighted Multidimensional Scaling with Statistics for Data Visualization and Process Monitoring." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/99911.

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This dissertation is the compilation of two major innovations that rely on a common technique known as multidimensional scaling (MDS). MDS is a dimension-reduction method that takes high-dimensional data and creates low-dimensional versions. Project 1: Visualizations are useful when learning from high-dimensional data. However, visualizations, just as any data summary, can be misleading when they do not incorporate measures of uncertainty; e.g., uncertainty from the data or the dimension reduction algorithm used to create the visual display. We incorporate uncertainty into visualizations created by a weighted version of MDS called WMDS. Uncertainty exists in these visualizations on the variable weights, the coordinates of the display, and the fit of WMDS. We quantify these uncertainties using Bayesian models in a method we call Informative Probabilistic WMDS (IP-WMDS). Visually, we display estimated uncertainty in the form of color and ellipses, and practically, these uncertainties reflect trust in WMDS. Our results show that these displays of uncertainty highlight different aspects of the visualization, which can help inform analysts. Project 2: Analysis of network data has emerged as an active research area in statistics. Much of the focus of ongoing research has been on static networks that represent a single snapshot or aggregated historical data unchanging over time. However, most networks result from temporally-evolving systems that exhibit intrinsic dynamic behavior. Monitoring such temporally-varying networks to detect anomalous changes has applications in both social and physical sciences. In this work, we simulate data from models that rely on MDS, and we perform an evaluation study of the use of summary statistics for anomaly detection by incorporating principles from statistical process monitoring. In contrast to most previous studies, we deliberately incorporate temporal auto-correlation in our study. Other considerations in our comprehensive assessment include types and duration of anomaly, model type, and sparsity in temporally-evolving networks. We conclude that the use of summary statistics can be valuable tools for network monitoring and often perform better than more involved techniques.
Doctor of Philosophy
In this work, two main ideas in data visualization and anomaly detection in dynamic networks are further explored. For both ideas, a connecting theme is extensions of a method called Multidimensional Scaling (MDS). MDS is a dimension-reduction method that takes high-dimensional data (all $p$ dimensions) and creates a low-dimensional projection of the data. That is, relationships in a dataset with presumably a large number of dimensions or variables can be summarized into a lower number of, e.g., two, dimensions. For a given data, an analyst could use a scatterplot to observe the relationship between 2 variables initially. Then, by coloring points, changing the size of the points, or using different shapes for the points, perhaps another 3 to 4 more variables (in total around 7 variables) may be shown in the scatterplot. An advantage of MDS (or any dimension-reduction technique) is that relationships among the data can be viewed easily in a scatterplot regardless of the number of variables in the data. The interpretation of any MDS plot is that observations that are close together are relatively more similar than observations that are farther apart, i.e., proximity in the scatterplot indicates relative similarity. In the first project, we use a weighted version of MDS called Weighted Multidimensional Scaling (WMDS) where weights, which indicate a sense of importance, are placed on the variables of the data. The problem with any WMDS plot is that inaccuracies of the method are not included in the plot. For example, is an observation that appears to be an outlier, really an outlier? An analyst cannot confirm this without further context. Thus, we created a model to calculate, visualize, and interpret such inaccuracy or uncertainty in WMDS plots. Such modeling efforts help analysts facilitate exploratory data analysis. In the second project, the theme of MDS is extended to an application with dynamic networks. Dynamic networks are multiple snapshots of pairwise interactions (represented as edges) among a set of nodes (observations). Over time, changes may appear in some of the snapshots. We aim to detect such changes using a process monitoring approach on dynamic networks. Statistical monitoring approaches determine thresholds for in-control or expected behavior that are calculated from data with no signal. Then, the in-control thresholds are used to monitor newly collected data. We applied this approach on dynamic network data, and we utilized a detailed simulation study to better understand the performance of such monitoring. For the simulation study, data are generated from dynamic network models that use MDS. We found that monitoring summary statistics of the network were quite effective on data generated from these models. Thus, simple tools may be used as a first step to anomaly detection in dynamic networks.
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Teets, Jay Marshall. "Multidimensional Visualization of Process Monitoring and Quality Assurance Data in High-Volume Discrete Manufacturing." Diss., Virginia Tech, 2007. http://hdl.handle.net/10919/26156.

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Advances in microcomputing hardware and software over the last several years have resulted in personal computers with exceptional computational power and speed. As the costs associated with microcomputer hardware and software continue to decline, manufacturers have begun to implement numerous information technology components on the shop floor. Components such as microcomputer file servers and client workstations are replacing traditional (manual) methods of data collection and analysis since they can be used as a tool for real-time decision-making. Server-based and web-based shop floor data collection and monitoring software applications are able to collect vast amounts of data in a relatively short period of time. In addition, advances in telecommunications and computer interconnectivity allow for the remote access and sharing of this data for additional analysis. Rarely, however, does the method by which a manager reviews production and quality data keep pace with the large amount of data being collected and thus available for analysis. Visualization techniques that allow the decision maker to react quickly, such as the ability to view and manipulate vast amounts of data in real-time, may provide an alternative for operations managers and decision-makers. These techniques can be used to improve the communication between the manager using a microcomputer and the microcomputer itself through the use of computer-generated, domain-specific visualizations. This study explores the use of visualization tools and techniques applied to manufacturing systems as an aid in managerial decision-making. Numerous visual representations that support process and quality monitoring have been developed and presented for evaluation of process and product quality characteristics. These visual representations are based on quality assurance data and process monitoring data from a high-volume, discrete product manufacturer with considerable investment in both automated and intelligent processes and information technology components. A computer-based application was developed and used to display the visual representations that were then presented to a sample group of evaluators who evaluated them with respect to their ability to utilize them in making accurate and timely decisions about the processes being monitored. This study concludes with a summary of the results and provides a direction for future research efforts.
Ph. D.
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Grefe, Linderbaum Beth. "FEEDBACK ORIENTATION: THE DEVELOPMENT AND VALIDATION OF A MULTIDIMENSIONAL MEASURE." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1152204402.

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Febrer, Pedro Maria Ulisses dos Santos Jalhay. "Residue sum formula for pricing options under the variance Gamma Model." Master's thesis, Instituto Superior de Economia e Gestão, 2020. http://hdl.handle.net/10400.5/20802.

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Mestrado em Mathematical Finance
O resultado principal desta dissertação é a demonstração da fórmula de serie de soma tripla para o preço de uma opção Europeia induzido por um processo Variance Gamma. Com esta intenção, apresentamos certas propriedades e noções sobre processos de Lévy e análise complexa multidimensional, dando ênfase à aplicação do cálculo de resíduos ao integral Mellin-Barnes. Subsequentemente, iremos construir a representação na forma do integral Mellin-Barnes, em C^3, para o preço de uma opção e, apoiados pelo anteriormente mencionado cálculo de resíduos, deduziremos a representação em serie de soma tripla para o preço de uma opção Europeia e os seus correspondentes gregos. Para terminar, dando uso à nova formula, serão computados e discutidos alguns valores para um caso de estudo particular.
The main result of this dissertation is the proof of the triple sum series formula for the price of an European call option driven by the Variance Gamma process. With this intention, we present some notions and properties of Lévy processes and multidimensional complex analysis, with emphasis on the application of residue calculus to the Mellin-Barnes integral. Subsequently, we construct the Mellin-Barnes integral representation, in C^3, for the price of the option and, buttressed with the aforementioned residue calculus, we deduce the triple sum series representation for the price of the European option and its corresponding greeks. Finally, with the use of the new formula, some values for a particular case study are computed and discussed.
info:eu-repo/semantics/publishedVersion
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Rubenstein, Tamera Sullivan. "Mentoring as A Multidimensional Process: The Personal Experience of an Infant-Toddler Classroom Mentor /." The Ohio State University, 1996. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487932351058896.

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Van, der Westhuizen Katriena Elizabet. "Comprehensive multidimensional gas chromatography for the analysis of Fischer-Tropsch products." Thesis, Stellenbosch : Stellenbosch University, 2011. http://hdl.handle.net/10019.1/18006.

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Thesis (PhD)--University of Stellenbosch, 2011.
ENGLISH ABSTRACT: The analysis of Fischer–Tropsch–derived (FT–derived) synthetic crude and derived products is very challenging because of the highly complex nature of these products. In this study, the use of comprehensive multidimensional gas chromatography (GCxGC) with time-of-flight mass spectrometry (TOF-MS) and flame ionisation detection (FID) was investigated for the analysis of these products and the technique was found to be invaluable for the analysis of these complex mixtures. The compositions of FT synthetic crude, produced at low temperature (LT–FT) and high temperature (HT–FT) processes were compared and the effect that changes in FT reaction temperature has on product formation was investigated. Results for conventional onedimensional GC (1D-GC) and GCxGC were compared. It was found that conventional 1D–GC does not have sufficient peak capacity to separate the thousands of compounds in the HT FT products. GCxGC provides a huge peak capacity of tens-of-thousands to separate highly complex mixtures. Structured chromatograms, where groups of compounds with similar properties are grouped together, aid in peak identification. Moreover, sensitivity at low microgram per milliliter levels is obtained. These attributes enabled accurate analysis of various complex feed and product streams in the FT refinery, and also various final fuel products. The use of GCxGC alone was demonstrated, and also combined with high performance liquid chromatography (HPLC), supercritical fluid chromatography (SFC) and nuclear magnetic resonance (NMR) when even more separation power was needed. HPLC–GCxGC enabled the separation of alkene and cyclic alkane compound classes in oligomerisation products. These compound classes have similar mass spectra, elute in adjacent regions and co–elute even to some extent on the GCxGC contour plot, making differentiation difficult. SFC is a good replacement for HPLC for these applications because it does not use solvents as mobile phases. CO2 is easily evaporated after the separation and does not interfere with the GCxGC separation of the analytes. SFC is also a very good technique to separate the compound classes of alkanes, alkenes, aromatics and oxygenates, and is therefore highly complementary to GCxGC. The combination of GCxGC with NMR data was also found to be very valuable for the identification of branched alkane isomers in LT–FT diesels. GCxGC provides excellent separation of individual compounds but the identification of isomers (except for mono–methyl branching) is difficult because the mass spectra of most of these isomers are similar and not all compounds are in the mass spectral libraries. NMR, on the other hand, is able to distinguish between the individual types of branched isomers but has limited separation power for the complex mixtures. By combining the two techniques, the best of both was obtained. The study found GCxGC to be invaluable for the analysis of the highly complex FT–derived products, while its combination with other techniques such as HPLC, SFC and NMR provided even more separation power.
AFRIKAANSE OPSOMMING: Die hoogs komplekse samestelling van sintetiese ru–olie en afgeleide produkte, afkomstig van Fischer–Tropsch (FT) sintese, bied groot uitdagings aan die analis. Die studie het die gebruik van GCxGC met ’n TOF-MS en FID bestudeer vir die analise van FT produkte en het bevind dat die tegniek van onskatbare waarde is vir die analise van die hoogs komplekse mengsels. Die samestellings van produkte van lae- en hoë-temperatuur FT prossesse is vergelyk en die effek van ’n verhoging in die reaksie–temperatuur op die produk samestelling is ondersoek. Resultate vir 1D–GC and GCxGC is vergelyk en dit was duidelik dat 1D-GC nie naastenby voldoende piekkapasiteit het om al die komponente van die produkte wat tydens die hoëtemperatuur prosses gevorm word, te kan skei nie. Die GCxGC se piekkapasiteit daarteenoor is in die orde van tienduisende wat die skeiding van hoogs komplekse mensels moontlik maak terwyl die tegniek hoogs gestruktureerde kontoerplotte verskaf wat help met identfikasie van komponente. Die tegniek is verder ook baie sensitief en kan komponente op lae μg/mL vlakke waarneem. Hierdie eienskappe het akkurate analise van verskeie FT produkstrome moontlik gemaak. Die kombinasie van GCxGC met HPLC, SFC en KMR het selfs meer skeidingskrag verskaf waar nodig. HPLC–GCxGC het die skeiding van alkene en sikliese alkane moontlik gemaak. Hierdie komponent klasse se massaspektra is feitlik dieselfde en terselfdertyd elueer die twee groepe reg langs mekaar, en oorvleuel soms selfs tot ’n mate, op die GCxGC kontoerplot, sodat dit moeilik is om daartussen te onderskei. SFC is ’n goeie alternatief vir HPLC in meeste toepassings aangesien die tegniek net CO2 gebruik, wat maklik verdamp by kamertemperatuur en nie oplosmiddels gebruik wat se pieke steur met die van die laekookpunt komponente op die GCxGC kontoerplot nie. Skeidings van die komponentgroepe alkane, alkene, aromate en oksigenate is moontlik met SFC en daarom komplimenteer dit die GCxGC skeiding goed aan. Die kombinasie van GCxGC met kern–magnetiese resonansie (KMR) is van waarde gevind om die verskillende tipes vertakkings in ’n lae-temperatuur FT diesel te identifiseer. GCxGC verskaf uitstekende skeiding van individuele komponente maar die identifikasie van die verskilende isomere, behalwe vir die mono-metiel vertakkings, is moeilik aangesien die massaspektra van baie van die komponente soortgelyk is en die komponente nie in die massa spektrum–biblioteke voorkom nie. KMR, aan die ander kant, kan tussen die individuele vertakkings onderskei maar het beperkte skeidingskrag vir komplekse mensels. Deur die twee tegnieke te kombineer is die beste van albei tegnieke bekom. Die studie het bevind dat GCxGC van onskatbare waarde is vir die analise van die komplekse sintetiese FT produkte terwyl die kombinasie met ander tegnieke soos HPLC, SFC and KMR selfs meer skeidingskrag verskaf.
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Aristizabal, Catalina Ramirez. "Sucesso de sistemas de Business Intelligence: uma abordagem multidimensional." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/3/3136/tde-18082016-101353/.

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Assim como outros investimentos em tecnologia da informação, os sistemas de Business Intelligence (BI) também têm sido questionados em relação aos benefícios e retornos obtidos depois de sua implantação. Isso porque o produto de BI é inteligência, ou, em outras palavras, algum tipo de informação processada, e o valor da informação é difícil de avaliar. A presente pesquisa pretende contribuir ao estudo desse problema de pesquisa, abordando o tema da avaliação dos sistemas de BI por meio do modelo de sucesso de sistemas de informação proposto por DeLone e McLean. Além das dimensões tradicionais inter-relacionadas do modelo: capacidade de BI, qualidade da informação, satisfação dos usuários e nível de uso, foi incluída a variável a abordagem de decisão, pois um dos principais objetivos dos sistemas de BI é processar dados advindos de diferentes fontes, para produzir informação que sirva como suporte para a tomada de decisão. Uma vez que a capacidade de BI e a qualidade da informação são constructos multidimensionais, uma das contribuições desta pesquisa foi realizar um levantamento na literatura sobre as dimensões que operacionalizam esse constructo e avaliá-las empiricamente. A capacidade de BI foi definida em termos de acessibilidade, capacidades analíticas, flexibilidade e integração, e qualidade da informação em termos de atualidade, completude, oportunidade e precisão. O problema de pesquisa foi abordado por meio da metodologia de survey, em que os respondentes foram convidados a participar da pesquisa via e-mail e o questionário foi disponibilizado em forma eletrônica através da ferramenta SurveyMonkey. No total, foram obtidas 483 repostas, das quais 246 foram válidas. Já que o modelo conceitual proposto inclui múltiplas relações de interdependência, a técnica estatística selecionada para analisar os dados foi a modelagem de equações estruturais. O software utilizado foi o SmartPLS que testa o modelo estrutural por meio do método de mínimos quadrados ordinários. Foi possível comprovar empiricamente todas as relações de causalidade propostas entre as dimensões de sucesso dos sistemas de BI, a exceção da relação de moderação da variável abordagem de decisão na relação de causalidade entre satisfação e nível de uso. Um teste subsequente permitiu observar que essa variável poderia ser preditora do nível de uso. Segundo os resultados, é possível afirmar que o sucesso de BI pode ser definido em termos da capacidade de BI, qualidade da informação, satisfação dos usuários e nível de uso. A operacionalização realizada dos constructos multidimensionais \"capacidade de BI\" e \"qualidade da informação\" poderia dar luzes sobre quais características devem ser priorizadas na implantação e/ou desenvolvimento dos sistemas de BI nas empresas.
As well as other investments in Information Technology (IT), Business Intelligence (BI) systems have also been questioned in relation to the benefits and returns obtained after its implementation. These questions arise because the BI product is intelligence, or, in other words, some kind of processed information and the value of information is difficult to assess. This research aims to contribute to this by addressing the issue of evaluation of BI systems through the information systems success model proposed by DeLone and McLean, beyond the traditional dimensions that are interrelated: BI capabilities, quality of information, user satisfaction, and level of use. The decision approach was included as a variable since a key objective of BI systems is to process data coming from different sources to produce information that serves as a basis for the decision-making process. Once the BI capability and information quality are multidimensional constructs, one of the contributions of this study was to review the literature available about the dimensions that operationalize this construct and evaluate them empirically. BI capability was defined in terms of accessibility, analytical capabilities, flexibility and integration, and the information quality in terms of opportunity, completeness, timeliness and accuracy. The research problem was addressed by the survey methodology: the respondents were invited to participate in the survey via email and the questionnaire was made available in electronic form through the SurveyMonckey tool. A number of 246 responses were usable out of the 483 total responses that were obtained. Since the proposed conceptual model includes multiple interdependencies, the statistical technique selected to analyze the data was the structural equation modeling. The software used was the SmartPLS, which tests the structural model using the ordinary least squares method. It was possible to prove empirically all the causal relationships proposed between success dimensions of BI systems, except for the moderation effect of making-decision approach variable on the relationship between satisfaction and usage level. A subsequent test allowed us to observe that this variable could be a predictor of the level of use. According to these results, we can say that the success of BI can be defined in terms of BI capability, the quality of information, user satisfaction and the level of use. The operationalization of the variables BI capability and information quality as a multidimensional construct could enlighten the decision about which features should be prioritized in implementing the development of BI systems in companies.
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Van, der Westhuizen Rina. "The use of multidimensional GC techniques for the analysis of complex petrochemical products." Thesis, Stellenbosch: University of Stellenbosch, 2005. http://hdl.handle.net/10019.1/4639.

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90 leaves on CD format, preliminary i-ix pages and numbered pages 1-81. Includes bibliography, list of figures in color to pdf format (OCR).
Thesis (MSc (Chemistry and Polymer Science))--University of Stellenbosch, 2005.
ENGLISH ABSTRACT: The composition of petrochemical products obtained from Fischer Tropsch (FT) technologies is of the highest complexity possible and may contain thousands of components. Chemicals produced from FT feedstocks often contain trace level contaminants that can poison catalysts or that affect product performance in down-line processes. Single dimension GC analysis of these mixtures provides incomplete information because of lack of separation power. This study evaluates the separation power of heart-cut GC-GC, comprehensive GCxGC and sequential GC-GC for three selected challenging petrochemical applications. The fundamental theoretical aspects of the techniques are discussed. Oxygenates are removed as far as possible in C10 – C13 alkylation feedstocks, used in the production of linear alkyl benzenes, because the oxygenates may have deactivating effects on some expensive alkylation catalysts. Residual oxygenates may still be present and can consist of hundreds of components. Detection of individual components at ng/g levels is required. Heart-cut GC-GC is used to illustrate the separation and enrichment power for oxygenates in an alkylation feedstock. The stationary phase in the first dimension column was selected to provide separation of the oxygenates from the hydrocarbons in a relatively narrow window. The oxygenate fraction is then enriched by repeated injections and collection on the cryotrap. After sufficient enrichment, the trap is heated and the oxygenates are analysed on the second dimension column. Comprehensive GCxGC and Sequential GC-GC are compared for the separation and analysis of the oxygenated chemical component classes in the alkylation feedstock, before removal of oxygenates. Cyclic alcohols can occur in detergent alcohols produced from FT feedstocks. These cyclics are regarded as impurities because they affect the physical properties of the detergents. The cyclic and noncyclic alcohols in a narrow C12 – C13 detergent alcohol distillation cut have similar boiling points and polarities, and separation of individual components is thus difficult to achieve. Comprehensive GCxGC and sequential GC-GC are evaluated for the separation of the alcohol component classes. The study shows that both approaches provide component class separation but the high resolving power of the second column and the optimal chromatographic operating conditions of sequential GC-GC provide better separation of the individual components. The study illustrates the immense power of the three multidimensional GC techniques namely heart-cut GC-GC, comprehensive GCxGC and sequential GC-GC. The three multidimensional GC techniques each have their own advantages, disadvantages and unique applications and should be used as complementary rather than as competitive analytical tools.
AFRIKAANSE OPSOMMING: Fischer Tropsch (FT) petrochemiese produkte is van baie hoë kompleksiteit en kan uit duisende komponente bestaan. Chemikalië afkomstig van dié voerstrome bevat soms spoorhoeveelhede onsuiwerhede wat deaktiverend op kataliste kan inwerk of wat die werkverrrigting van finale produkte kan beïnvloed. Enkeldimensie GC analises van die komplekse mengsels is meesal onakkuraat as gevolg van geweldige piekoorvleueling. Die studie evalueer die skeidingsvermoë van drie multidimensionele tegnieke, Heart-cut GC-GC, Comprehensive GCxGC en Sequential GC-GC vir geselekteerde petrochemiese toepassings. Die fundamentele teoretiese aspekte van die tegnieke word bespreek en drie analitiese toepassings word beskryf. Oksigenate word so ver moontlik verwyder uit C10 – C13 paraffien-voerstrome, wat gebruik word in die vervaardiging van liniêre alkielbenzene, aangesien dit deaktiverend kan inwerk op alkileringskataliste. Die oorblywende oksigenate kan uit honderde komponente bestaan sodat analise van individuele komponente tot op lae ng/g vlakke nodig is. Heart-cut GC-GC word gebruik om die skeiding en verryking van die oksigenate in die alkileringsvoerstroom te illustreer. Die stationêre fase in die eerste-dimensie kolom is so gekies dat skeiding tussen oksigenate en koolwaterstowwe verkry word. Met herhaalde inspuitings verhoog die oksigenaat-konsentrasie op die cryo val en - na voldoende verryking - word die val verhit en die oksigenate geanaliseer op die tweede dimensie kolom. Die skeiding en analises verkry met Comprehensive GCxGC en Sequential GC-GC word vergelyk vir die chemiese klasse-skeiding van die alkileringsvoer (voor verwydering van oksigenate). Sikliese alkohole kan voorkom in detergent-alkohole vervaardig vanaf FT voerstrome. Dit word as onsuiwerhede beskou aangesien dit die fisiese eienskappe van die finale produkte beïnvloed. Die sikliese en nie-sikliese alkohole se kookpunte en polariteite is baie naby aanmekaar sodat skeiding van individuele komponente moeilik verkry word. Comprehensive GCxGC en Sequential GC-GC word evalueer vir die skeiding van die alkohol. Die studie toon aan dat albei die tegnieke skeiding gee van die chemiese komponent-klasse maar dat die hoë-resolusie tweede-dimensie kolom en die optimisering van die experimentele kondisies van die Sequential GC-GC sisteem beter skeiding van individuele komponente gee. Die uitsonderlike skeidingsvermoë van die drie multidimensionele tegnieke, Heart-cut GC-GC, Comprehensive GCxGC en Sequential GC-GC word geïllustreer in die studie. Elke tegniek het sy eie voordele, nadele en unieke toepassings en die drie tegnieke behoort as komplementêre eerder as kompeterende tegnieke gebruik te word.
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Calonico, Cipriano. "Towards a multidimensional model of creativity: an analysis of six models of creativity and the creative process." Thesis, Malmö högskola, Fakulteten för lärande och samhälle (LS), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-32099.

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Creativity appears repeatedly in the curricula for the Compulsory School and the Upper Secondary School in Sweden, as well as in the course syllabi for Art Education.The purpose of this essay is to achieve a better understanding of the building blocks of creativity, in order to widen the range of tools that can be used in teaching situations. Departing from six established models of understanding creativity, the essay attempts to find some common aspects among the models, which can help teachers to unify and organize the models with the ultimate aim of achieving a wider and more comprehensive understanding of creativity.Close reading is used as the method of analysis and interpretation in order to find common categories among the selected models of creativity. The process of close reading is performed and organized using the structure and concepts of Qualitative Content Analysis (QCA), with an inductive approach.The analysis of the six models of creativity results in the identification and classification of two common themes: flexibility and bird’s eye view, the combination of which can be used as a way to achieve a more comprehensive, complete and thus enhanced model to understand creativity, which can give teachers a wider range of tools to apply creatively in the classroom.
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Books on the topic "Multidimensional process"

1

Park, June S. Delay analysis for multidimensional queueing process in CSMA/CD local area networks. Monterey, Calif: Naval Postgraduate School, 1991.

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Stroock, Daniel W. Multidimensional diffusion processes. 2nd ed. Berlin: Springer, 1997.

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Hölttä, Risto. Multidimensional diffusion of innovation. Helsinki: Helsinki School of Economics and Business Administration, 1989.

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Dozzi, M. Stochastic processes with a multidimensional parameter. Harlow, Essex, England: Longman Scientific & Technical, 1989.

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Friz, Peter K. Multidimensional stochastic processes as rough paths: Theory and applications. New York: Cambridge University Press, 2010.

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Friz, Peter K. Multidimensional stochastic processes as rough paths: Theory and applications. Cambridge, UK: Cambridge University Press, 2010.

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Ivanova, Valeriya, Elena Alyab'eva, Marina Bogdanova, Tat'yana Boguckaya, Elena Vanina, Ekaterina Vistarovskaya, Lyubov' Gienko, et al. Organization of educational work in a modern university: traditions and innovations. ru: INFRA-M Academic Publishing LLC., 2023. http://dx.doi.org/10.12737/1893199.

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The monograph examines the features of the organization of the modern process of educating students at the university. The authors pay special attention to the study of professional socialization and adaptation of university students. Some practical approaches to the process of education are presented. The education of students is considered as a complex, integrated, multidimensional process, including educational, project, scientific, professional and other activities. The tasks related to the creation of comfortable socio-psychological conditions and a socio-cultural educational environment conducive to the formation of general cultural competencies are also discussed. It is intended for teachers, students and postgraduates, as well as persons interested in the theory and practice of educating students.
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Munerman, Viktor, Vadim Borisov, and Aleksandra Kononova. Mass data processing. Algebraic models and methods. ru: INFRA-M Academic Publishing LLC., 2023. http://dx.doi.org/10.12737/1906037.

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The monograph is devoted to mathematical and algorithmic support of mass data processing based on algebraic models. One of the most common classes of mass processing is considered - processing of highly active structured data. The construction of algebraic models of data and calculations and methods of proving their correspondence are analyzed. Three algebraic systems are studied, which can be used both as data models and as models of calculations. The algebraic and axiomatic methods of proving the correspondence of these models are investigated. A proof of their correspondence is given: homomorphism and isomorphism. The problem of optimizing the processes of mass processing of data presented in the form of algebraic expressions in the proposed algebra models is raised. The algorithms of synthesis and optimization of calculation of these expressions, the method of symmetric horizontal data distribution providing parallel implementation of calculation of algebraic expressions and generalization of the block algorithm of parallel matrix multiplication for the case of multiplication of multidimensional matrices are described in detail. Architectures of software and hardware complexes for effective parallel implementation of operations in the considered algebra models are proposed. A number of real-world examples illustrating the application of the proposed methods are given. For students, postgraduates and teachers of technical and physical-mathematical universities and faculties.
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Varadhan, S. R. S., and Daniel W. Stroock. Multidimensional Diffusion Processes. Springer London, Limited, 2007.

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Stroock, Daniel W., and S. R. S. Varadhan. Multidimensional Diffusion Processes. Springer, 2009.

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Book chapters on the topic "Multidimensional process"

1

Rinderle-Ma, Stefanie. "Multidimensional Process Analytics." In Encyclopedia of Big Data Technologies, 1–6. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-63962-8_97-1.

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Rinderle-Ma, Stefanie. "Multidimensional Process Analytics." In Encyclopedia of Big Data Technologies, 1163–69. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-77525-8_97.

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Bolt, Alfredo, and Wil M. P. van der Aalst. "Multidimensional Process Mining Using Process Cubes." In Enterprise, Business-Process and Information Systems Modeling, 102–16. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-19237-6_7.

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Short, Dan. "Nonlinear Multidimensional Language." In Making Psychotherapy More Effective with Unconscious Process Work, 71–88. New York: Routledge, 2021. http://dx.doi.org/10.4324/9781003127208-5.

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Businska, Ligita. "Multidimensional Business Process Modeling Approach." In Advances in Databases and Information Systems, 247–56. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-12082-4_31.

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Vogelgesang, Thomas, Stefanie Rinderle-Ma, and H. Jürgen Appelrath. "A Framework for Interactive Multidimensional Process Mining." In Business Process Management Workshops, 23–35. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-58457-7_2.

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Siemionek, Anna, and Michał Chalastra. "Multidimensional Process of Financial Controlling Implementation." In The Impact of Globalization on International Finance and Accounting, 411–19. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-68762-9_45.

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Rotshtein, Alexander, and Serhiy Shtovba. "Genetic Optimization of Multidimensional Technological Process Reliability." In Computational Intelligence in Reliability Engineering, 287–300. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-37368-1_9.

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Mansmann, Svetlana, Thomas Neumuth, and Marc H. Scholl. "Multidimensional Data Modeling for Business Process Analysis." In Conceptual Modeling - ER 2007, 23–38. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-75563-0_4.

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Suesaowaluk, Poonphon. "Multidimensional Process Analytical System for Manufacturing Management." In Lecture Notes in Electrical Engineering, 841–47. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-47200-2_88.

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Conference papers on the topic "Multidimensional process"

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Agi, Damian T., Hani A. E. Hawa, and Alexander W. Dowling. "Equation-Oriented Modeling of Water-Gas Shift Membrane Reactor for Blue Hydrogen Production." In Foundations of Computer-Aided Process Design, 395–402. Hamilton, Canada: PSE Press, 2024. http://dx.doi.org/10.69997/sct.152308.

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Water-gas shift membrane reactors (WGS-MRs) offer a pathway to affordable blue H2 generation/purification from gasified feedstock or reformed fuels. To exploit their cost benefits for blue hydrogen production, WGS-MRs� performance needs to be optimized, which includes navigating the multidimensional design space (e.g., temperature, feed pressures, space velocity, membrane permeance and selectivity, catalytic performance). This work describes an equation-oriented modeling framework for WGS-MRs in the Pyomo ecosystem, with an emphasis on model scaling and multi-start initialization strategies to facilitate reliable convergence with nonlinear optimization solvers. We demonstrate, through sensitivity analysis, that our model converges rapidly (< 1 CPU second on a laptop computer) under a wide range of operating parameters (e.g., feed pressures of 1-3 MPa, reactor temperatures of 624-824 K, sweep-to-feed ratios of 0-0.5, and steam/carbon ratios of 1-5). Ongoing work includes (1) validation and calibration of the WGS-MR model using benchtop laboratory data and (2) design, intensification, and optimization of blue H2 processes using the WGS-MR model.
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Yang, Ting, Jufen Ye, Jianghua Hu, Congtie Li, Junyuan Tan, Zhiming Shen, and Yuanming Sun. "Multidimensional Risk Assessment and Strategy Analysis of Overhead Transmission Lines Based on Analytic Hierarchy Process." In 2024 The 9th International Conference on Power and Renewable Energy (ICPRE), 791–96. IEEE, 2024. https://doi.org/10.1109/icpre62586.2024.10768640.

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Ma, Fa-Jun, Shaozhou Wang, Chuqi Yi, Lang Zhou, Ziv Hameiri, Stephen Bremner, and Xiaojing Hao. "Easy Access to Typical Multidimensional Process/Optical/Electrical Simulations for Solar Cells by Tuning 11 Variables." In 2024 IEEE 52nd Photovoltaic Specialist Conference (PVSC), 0413. IEEE, 2024. http://dx.doi.org/10.1109/pvsc57443.2024.10749296.

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Vogelgesang, Thomas, and H. Jürgen Appelrath. "Multidimensional process mining." In the Joint EDBT/ICDT 2013 Workshops. New York, New York, USA: ACM Press, 2013. http://dx.doi.org/10.1145/2457317.2457321.

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Matheus, Justo, Antonio Dourado, Jorge Henriques, Maria Antonio, and Dora Nogueira. "Iterative Multidimensional Scaling for Industrial Process Monitoring." In 2006 IEEE International Conference on Systems, Man and Cybernetics. IEEE, 2006. http://dx.doi.org/10.1109/icsmc.2006.384359.

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"Integration Process for Multidimensional Textual Data Modeling." In 1st International Workshop in Software Evolution and Modernization. SciTePress - Science and and Technology Publications, 2013. http://dx.doi.org/10.5220/0004602501190126.

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Hartnett, M., and G. W. Irwin. "Statistical approaches to industrial process plant modelling." In IEE Colloquium on Multidimensional Systems: Problems and Solutions. IEE, 1998. http://dx.doi.org/10.1049/ic:19980166.

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Kurilla, Jozef. "Temperature control of multidimensional system using decoupled MPC controllers." In 2017 21st International Conference on Process Control (PC). IEEE, 2017. http://dx.doi.org/10.1109/pc.2017.7976239.

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Qing Xiangyun and Wang Xingyu. "Bayesian multidimensional scale clustering based on Dirichlet process." In 2008 Chinese Control Conference (CCC). IEEE, 2008. http://dx.doi.org/10.1109/chicc.2008.4605443.

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Idczak, D. "On a continuous variant of a linear repetitive process." In The Fourth International Workshop on Multidimensional Systems - NDS 2005. IEEE, 2005. http://dx.doi.org/10.1109/nds.2005.195362.

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Reports on the topic "Multidimensional process"

1

Sena, Mary, and Jessica Jones. Hyperparameter Setting for a Marked Multidimensional Hawkes Process with Dissimilar Decays. Office of Scientific and Technical Information (OSTI), September 2021. http://dx.doi.org/10.2172/1821256.

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Park, June S., and Keebom Kang. Delay Analysis for Multidimensional Queueing Process in CSMA/CD Local Area Networks. Fort Belvoir, VA: Defense Technical Information Center, September 1991. http://dx.doi.org/10.21236/ada242364.

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Ahuja, S., S. L. Dieckman, and N. Gopalsami. Application of NMR spectroscopy and multidimensional imaging to the gelcasting process and in-situ real-time monitoring of cross-linking polyacrylamide gels. Office of Scientific and Technical Information (OSTI), April 1995. http://dx.doi.org/10.2172/167202.

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Rojas, Eduardo. Urban Heritage Conservation in Latin America and the Caribbean: A Task for All Social Actors. Inter-American Development Bank, November 2002. http://dx.doi.org/10.18235/0008523.

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Given the limited scope and sustainability of urban heritage conservation in Latin America and the Caribbean, changes in how it is carried out and funded are needed in order to involve all social actors and use the preserved assets to meet demonstrated social needs. Based on a multidimensional analysis of the assets¿ value and the social processes through which these values materialize, the paper, identifies measures for better matching the interests of and benefits obtained by those involved in the conservation process. It is suggested that the process will be more sustainable and capable of being expanded in a manner corresponding to the magnitude and value of the region¿s heritage if those who benefit from it are also those who promote and pay for it. Critical review of some of the projects funded by the Inter-American Development Bank, which may be considered ongoing experiments, inspires moderate optimism about the viability of the proposed changes.
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Kucirkova, Natalia Ingebretsen, and David Dockterman. Towards a holistic understanding of evidence: A working paper. UiS Scholarly Publishing Services, September 2024. http://dx.doi.org/10.31265/usps.284.

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This report synthesizes reflections and recent literature to propose a rethinking of evidence generation in educational technology (EdTech). It advocates for three paradigm shifts to advance the discourse and practice in EdTech impact: 1) Evidence of impact should be understood as multidimensional, encompassing a variety of measures, not only experimental evidence. 2) Evidence collection should support an iterative and ongoing process of evaluating and improving impact over time. 3) Rigorous approaches are essential throughout the entire cycle of evidence to ensure validity and reliability. Recognizing that stakeholders in the EdTech ecosystem have diverse incentives and metrics for success, the report argues that aligning these efforts toward a shared goal of improving educational equity can accelerate the production of sharable knowledge and foster wider, more meaningful impacts.
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Wong, Eugene, and Jean Walrand. Multidimensional Signals, Data and Processes. Fort Belvoir, VA: Defense Technical Information Center, May 1992. http://dx.doi.org/10.21236/ada254797.

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Wong, Eugene, and Jean Walrand. Multidimensional Signals, Data and Processes. Fort Belvoir, VA: Defense Technical Information Center, May 1992. http://dx.doi.org/10.21236/ada255318.

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Axford, Barrie. The Implications of Rising Multipolarity for Authoritarian Populist Governance, Multilateralism, and the Nature of New Globalization. European Center for Populism Studies (ECPS), March 2024. http://dx.doi.org/10.55271/pp0031.

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What is it about the current phase of globalization that feeds on and is fed by the populist zeitgeist? In what follows I will tie the discussion of populism to the changing character of globalization, sometimes called the “new” globalization, though that label does less than justice to the overlapping nature of historical globalizations. The “new” globalization is both a description of the de-centered and multi-polar constitution of globality today and a reflex to safeguard against the roils of an ever more connected and turbulent world. It is a reminder that globalization has always been a multidimensional and contradictory process, moving to no single constitutive logic, and historically variable. The new globalization is the context for the current populist surge and, in turn, that surge is testimony to its emergence as a serious political force, perhaps as an embedded global script. In this same context the much-trumpeted failures of multilateralism are set against a burgeoning multipolarity which is itself an expression of the changing face of political modernity.
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Shostak, Ray, Martín Alessandro, Peter Diamond, Edgardo Mosqueira, and Mariano Lafuente. The Center of Government, Revisited: A Decade of Global Reforms. Inter-American Development Bank, July 2023. http://dx.doi.org/10.18235/0004994.

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The institutions and units at the Center of Government (CoG) provide managerial direction and coherence to the complex machinery of government to accelerate the delivery of its priority objectives. In recent years, economic, social, political, and technological transformations have reshaped the functions of the CoG, as well as the tools available to CoG practitioners. For example, the acceleration of multidimensional transformations and disruptions--including pandemics, climate hazards, economic crises, technological developments, and global conflicts--has enhanced the value of anticipatory governance and foresight, cross-ministerial planning and policy design, and real-time performance monitoring and intervention. This publication takes stock of these and other innovations, based on learnings from a decade of reforms, globally and in Latin America and the Caribbean. It presents both an updated conceptual understanding of the work of the CoG and a set of specific routines, instruments, and step-by-step actions that should be considered in the process of strengthening the CoG capacity. It also includes an assessment tool to guide practitioners in identifying the key CoG functions and activities most in need of development or enhancement in their specific context.
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Messina, Francesca, Ioannis Georgiou, Melissa Baustian, Travis Dahl, Jodi Ryder, Michael Miner, and Ronald Heath. Real-time forecasting model development work plan. Engineer Research and Development Center (U.S.), September 2023. http://dx.doi.org/10.21079/11681/47599.

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The objective of the Lowermost Mississippi River Management Program is to move the nation toward more holistic management of the lower reaches of the Mississippi River through the development and use of a science-based decision-making framework. There has been substantial investment in the last decade to develop multidimensional numerical models to evaluate the Lowermost Mississippi River (LMMR) hydrodynamics, sediment transport, and salinity dynamics. The focus of this work plan is to leverage the existing scientific knowledge and models to improve holistic management of the LMMR. Specifically, this work plan proposes the development of a real-time forecasting (RTF) system for water, sediment, and selected nutrients in the LMMR. The RTF system will help inform and guide the decision-making process for operating flood-control and sediment-diversion structures. This work plan describes the primary components of the RTF system and their interactions. The work plan includes descriptions of the existing tools and numerical models that could be leveraged to develop this system together with a brief inventory of existing real-time data that could be used to validate the RTF system. A description of the tasks that would be required to develop and set up the RTF system is included together with an associated timeline.
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