نتایج جستجو برای: analytical analysis
تعداد نتایج: 2917672 فیلتر نتایج به سال:
In this paper, we introduce ClustCube, an innovative OLAP-based framework for clustering and mining complex database objects extracted from distributed database settings. To this end, ClustCube puts together conventional clustering techniques and well-consolidated OLAP methodologies in order to achieve higher expressive power and mining effectiveness over traditional methodologies for mining tu...
Large, longitudinal, multivariate population surveys are increasingly common. Many analytic methods inspect changing rates of individual outcomes but ignore heterogeneous subpopulations that may exist. In this document I propose two analytical methods which extend group-based trajectory models to multivariate outcomes. I use group-based longitudinal finite mixture models (i.e., developmental tr...
In forensic science, soil, dust, and vegetable traces have as high a value as evidence as classical traces such as fingerprints or toolmarks. It is imperative that the potential information in these traces can be identified by a combination of analytical methods selected by a qualified expert. Experience has shown that the best results can be expected when all of the aspects of evidence, includ...
Serial results from an individual are often obtained using more than one method. Results should be transferable over time and locale. Every method has inherent analytical error, and goals are required to delineate the maximum allowable random (imprecision) and systematic (inaccuracy, bias) errors to facilitate optimal patient care. Based on Harris's proposal [Am J Clin Pathol 1979;72:374-82] th...
In order to evaluate the accuracy of a numerical control machine tool comprehensively, the accuracy evaluation index system of a numerical control machine tool was established, and the priorities of accuracy indexes were determined by analytic hierarchy process method. Taking a five-axis numerical control machine tool for example, each accuracy index of it was studied by using fuzzy comprehensi...
To understand the biogeochemistry of nutrients and contaminants in environmental media, their speciation and behavior under different conditions and at multiple scales must be determined. Synchrotron radiation-based X-ray techniques allow scientists to elucidate the underlying mechanisms responsible for nutrient and contaminant mobility, bioavailability, and behavior. The continuous improvement...
Before quality control techniques and protocols can be applied to a laboratory procedure, the quality itself must be evaluated. This involves among other considerations an assessment of analytical accuracy. Some, but not all (and perhaps not even many), clinical laboratory analytical procedures can be considered accurate in the sense that every laboratory should get the same quantitative result...
OBJECTIVE To systematically review guidance documents for the estimation of the social cost of illegal drugs, and to define standards for this estimation. METHOD A systematic literature search was conducted between April and May 2015 and updated in November 2015. Pubmed, Scopus, and Google Scholar were searched. Studies were included only if they provided indications of analytical methods for...
The model-based image reconstruction approaches in photoacoustic tomography have a distinct advantage compared to traditional analytical methods for cases where limited data is available. These methods typically deploy Tikhonov based regularization scheme to reconstruct the initial pressure from the boundary acoustic data. The model-resolution for these cases represents the blur induced by the ...
Reaction of MoCl3(THF)3 with [Me2Si{NLi(Dipp)}2]2 (Dipp = 2,6-i-PrC6H3) afforded a triply bonded dimolybdenum complex 1,2-Mo2Cl2[Me2Si(NDipp)2]2 1, spanned by two Me2Si[N(Dipp)]2 ligands, thus resulting in a syn conformation. The air- and moisture-sensitive compound 1 was characterized by NMR spectroscopic, elemental, and single-crystal X-ray crystallographic analysis. Reduction of 1 by Na/Hg y...
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