A Two-Level Method for Clustering DTDs1

2000 ◽  
pp. 43-52 ◽  
Author(s):  
Weining Qian ◽  
Long Zhang ◽  
Yuqi Liang ◽  
Hailei Qian ◽  
Wen Jin
Keyword(s):  
Level Method

41. Diffusion Badges as a Long-Term, Low-Level Method of Ambient Air Analysis

2005 ◽  
Author(s):  
K. Parker ◽  
S. Rose-Pehrsson ◽  
D. Kidwell
Keyword(s):  
Ambient Air ◽  
Air Analysis ◽  
Low Level ◽  
Level Method

scholarly journals Evaluation of Volatile Compounds during Ageing with Oak Chips and Oak Barrel of Muscat Ottonel Wine

Processes ◽  
2020 ◽  
Vol 8 (8) ◽  
pp. 1000
Author(s):  
Anamaria Călugăr ◽  
Teodora Emilia Coldea ◽  
Carmen Rodica Pop ◽  
Tiberia Ioana Pop ◽  
Anca Cristina Babeș ◽  
...  
Keyword(s):  
Volatile Compounds ◽  
Ageing Time ◽  
Extraction Process ◽  
White Wine ◽  
Economic Benefits ◽  
Volatile Components ◽  
Least Squares Regression ◽  
Oak Chips ◽  
Level Method ◽  
Scientific Results

The aim of this work was to compare the variations of alcohols compounds in white wine Muscat Ottonel variety aged in the presence of untoasted oak chips, toasted oak chips and untoasted barrel, considering three ageing periods—30, 60, and 90 days. The liquid-liquid extraction and gas chromatography coupled to mass spectrometry were used to compare the concentrations of the volatile constituents of Muscat Ottonel wines. A total of 51 volatile compounds were quantified. Alcohols, terpenic and carboxylic acids decreased with ageing time, whereas esters, lactones, and phenolic compounds increased due esterification processes. The chips toast level, method, and duration of ageing, significantly influenced the content of aromatic compounds. Partial least squares regression (PLS-R) clearly discriminated the initial wine and also the wines aged with toasted and untoasted medium. The compounds (alcohols and terpenes) that impart distinctive aroma of Muscat Ottonel were enhanced by untoasted medium. Light toasted oak chips enhanced wood volatile components (acetovanillone and p-vinyl guaiacol). This study provides important scientific results on the ageing of Muscat Ottonel wines with practical economic benefits to winemakers. Alternative less expensive ageing methods and improved control on the wood components extraction process, may contribute to obtaining high-quality wines.

scholarly journals The role of ultrasound imaging in vascular compression syndromes

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Renato Farina ◽  
Pietro Valerio Foti ◽  
Andrea Conti ◽  
Francesco Aldo Iannace ◽  
Isabella Pennisi ◽  
...  
Keyword(s):  
Thoracic Outlet Syndrome ◽  
Clinical Signs ◽  
Vascular Compression ◽  
Nutcracker Syndrome ◽  
Vascular Changes ◽  
False Negatives ◽  
Dunbar Syndrome ◽  
Level Method ◽  
Compression Syndromes

AbstractVascular compression syndromes are rare alterations that have in common the compression of an arterial and/or venous vessel by contiguous structures and can be congenital or acquired. The best known are the Thoracic Outlet Syndrome, Nutcracker Syndrome, May–Thurner Syndrome, and Dunbar Syndrome. The incidence of these pathologies is certainly underestimated due to the non-specific clinical signs and their frequent asymptomaticity. Being a first-level method, Ultrasound plays a very important role in identifying these alterations, almost always allowing a complete diagnostic classification. If in expert hands, this method can significantly contribute to the reduction of false negatives, especially in the asymptomatic population, where the finding of the aforementioned pathologies often happens randomly following routine checks. In this review, we briefly discuss the best known vascular changes, the corresponding ultrasound anatomy, and typical ultrasound patterns.

A Systems-Level Method for Developing Nursing Informatics Solutions

2019 ◽  
Vol 49 (11) ◽  
pp. 543-548 ◽  
Author(s):  
Sammie Mosier ◽  
Wm. Dan Roberts ◽  
Jane Englebright
Keyword(s):  
Nursing Informatics ◽  
Level Method

Holes Machining Process Optimization with Genetic Algorithm

2011 ◽  
Vol 460-461 ◽  
pp. 117-122 ◽  
Author(s):  
Guang Yu Zhu ◽  
Lian Fang Chen
Keyword(s):  
Genetic Algorithm ◽  
Cutting Tool ◽  
Machining Process ◽  
Processing Route ◽  
Optimal Route ◽  
Optimal Processing ◽  
Global Optimal ◽  
Level Method ◽  
Multi Level ◽  
Changing Times

In this paper, a multi-level method has been adopted to optimize the holes machining process with genetic algorithm (GA). Based on the analyzing of the features of the part with multi-holes, the local optimal processing route for the holes with the same processing feature is obtained with GA, then try to obtain the global optimal route with GA by considering the obtained local optimal route and the holes with different features. That is what the multi-level method means. The optimal route means the minimum moving length of the cutting tool and the minimum changing times of the cutting tool. The experiment is carried out to verify the algorithm and the proposed method, and result indicates that with GA and using the multi-level method the optimal holes machining route can be achieved efficiently.

scholarly journals A two-level method for mimetic finite difference discretizations of elliptic problems

2015 ◽  
Vol 70 (11) ◽  
pp. 2674-2687 ◽  
Author(s):  
Paola F. Antonietti ◽  
Marco Verani ◽  
Ludmil Zikatanov
Keyword(s):  
Finite Difference ◽  
Elliptic Problems ◽  
Level Method

Attribute-oriented cognitive concept learning strategy: a multi-level method

2018 ◽  
Vol 10 (9) ◽  
pp. 2421-2437 ◽  
Author(s):  
Bingjiao Fan ◽  
Eric C. C. Tsang ◽  
Weihua Xu ◽  
Degang Chen ◽  
Wentao Li
Keyword(s):  
Concept Learning ◽  
Learning Strategy ◽  
Level Method ◽  
Multi Level
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