scholarly journals Statistical Correlation Analysis of Field-Aligned Currents Measured by Swarm

2018 ◽  
Vol 123 (10) ◽  
pp. 8170-8184 ◽  
Author(s):  
J. -Y. Yang ◽  
M. W. Dunlop ◽  
H. Lühr ◽  
C. Xiong ◽  
Y.-Y. Yang ◽  
...  
Keyword(s):  
Correlation Analysis ◽  
Statistical Correlation

scholarly journals Reliability-Based Serviceability Limit State Design of a Jacket Substructure for an Offshore Wind Turbine

Energies ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2751 ◽  
Author(s):  
Jianhua Zhang ◽  
Won-Hee Kang ◽  
Ke Sun ◽  
Fushun Liu
Keyword(s):  
Correlation Analysis ◽  
Reliability Analysis ◽  
Limit State ◽  
Statistical Correlation ◽  
Offshore Wind ◽  
Offshore Wind Turbine ◽  
State Function ◽  
Optimized Design ◽  
Foundation Design ◽  
Serviceability Limit State

The development of a structurally optimized foundation design has become one of the main research objectives for offshore wind turbines (OWTs). The design process should be carried out in a probabilistic way due to the uncertainties involved, such as using parametric uncertainties regarding material and geometric properties, and model uncertainties in resistance prediction models and regarding environmental loads. Traditional simple deterministic checking procedures do not guarantee an optimized design because the associated uncertainties are not fully considered. In this paper, a reliability analysis framework is proposed to support the optimized design of jacket foundations for OWTs. The reliability analysis mainly considers the serviceability limit state of the structure according to the requirements of the code. The framework consists of two parts: (i) an important parameter identification procedure based on statistical correlation analysis and (ii) a finite element-simulation-based reliability estimation procedure. The procedure is demonstrated through a jacket structure design of a 3 MW OWT. The analysis results show that the statistical correlation analysis can help to identify the parameters necessary for the overall structural performance. The Latin hypercube sampling and the Monte Carlo simulation using FE models effectively and efficiently evaluate the reliability of the structure while not relying on a surrogate limit state function. A comparison between the proposed framework and the deterministic design shows that the framework can help to achieve a better result closer to the target reliability level.

scholarly journals Correlation of hair risperidone concentration and serum level among patients with schizophrenia

2019 ◽  
Vol 32 (1) ◽  
pp. e100042 ◽  
Author(s):  
Xiujia Sun ◽  
Lihua Wang ◽  
Fuzhong Yang ◽  
Juanjuan Ren ◽  
Ping Jiang ◽  
...  
Keyword(s):  
Correlation Analysis ◽  
Serum Concentration ◽  
Total Concentration ◽  
Rapid Onset ◽  
High Plasma ◽  
Statistical Correlation ◽  
Therapeutic Drug ◽  
Experimental Basis ◽  
Drug Concentrations

BackgroundRisperidone (RSP) has a rapid onset in vivo, low dosage and high plasma protein binding rate, therefore therapeutic drug monitoring (TDM) is needed to ensure safety in clinical treatment. However, compared with blood, hair is non-invasive, safe, non-infectious and easy to transport and store.AimsThis study aims to investigate the correlations among the drug concentrations of RSP in hair and serum, which provides an experimental basis to explore hair as a novel biomaterial to meet the needs of clinical detection.Methods34 patients with schizophrenia treated with RSP for more than 3 months were enrolled in this study. About 1 cm section of hair near the scalp was taken from the subjects, pretreated and detected by liquid chromatography-mass spectrometry. A correlation analysis was conducted among the drug concentrations in hair, the serum concentrations and the daily dosage. The data were analysed using SPSS 20.0 software.Results There was significant correlation between the hair concentration of RSP (two-tailed test, r=0.440,p=0.009) with the serum concentration of RSP, and the hair concentration of 9-hydroxyrisperidone (9-HR) with the serum concentration of 9-HR had no significant correlation (two-tailed test, r=−0.217,p=0.217); the total concentration of the RSP and 9-HR had no significant correlation between hair and serum (r=0.227,p=0.196). The dosage had no statistically significant correlation with the concentration of RSP in hair (r=0.207,p=0.241), 9-HR in hair (r=−0.194,p=0.271) and the total concentration of RSP and 9-HR in hair (r=0.188,p=0.288). There was no statistical correlation between the dosage and the concentration of RSP in serum (r=−0.059,p=0.741), but significant correlation between the dosage and 9-HR in serum (r=0.581p<0.001) was found, and the correlation between the dosage and the total concentration of the two drugs RSP and 9-HR in serum was also significant (r=0.437,p=0.01).ConclusionThe correlation analysis showed that the concentration of RSP in hair was statistically significant with the serum RSP concentration. In this study, we provided some experimental basis for hair as a new biomaterial to monitor the therapeutic drug concentration.

Statistical correlation analysis in image retrieval

2002 ◽  
Vol 35 (12) ◽  
pp. 2687-2693 ◽  
Author(s):  
Mingjing Li ◽  
Zheng Chen ◽  
Hong-Jiang Zhang
Keyword(s):  
Correlation Analysis ◽  
Image Retrieval ◽  
Statistical Correlation

Statistical correlation properties of the SHIBOR interbank lending market

2015 ◽  
Vol 5 (2) ◽  
pp. 91-102 ◽  
Author(s):  
Yong Luo ◽  
Jie Xiong ◽  
Lie Gang Dong ◽  
Yong Tang
Keyword(s):  
Correlation Analysis ◽  
Matrix Theory ◽  
Statistical Correlation ◽  
Largest Eigenvalue ◽  
Content Type ◽  
Crisis Period ◽  
Good Estimator ◽  
Interbank Lending ◽  
Correlation Properties ◽  
Market Mode

Purpose – The purpose of this paper is to investigate the statistical correlation properties of the Shanghai Interbank Offered Rate (SHIBOR) interbank lending market. Design/methodology/approach – The authors apply methods of correlation analysis, random matrix theory (RMT) and minimum spanning tree (MST) to investigate the correlation properties of Chinese interbank lending market and analyze how the SHIBOR panel banks behave in different market periods. Findings – First, the largest eigenvalue λ 1 is the index to describe the market mode of the whole market when all banks behavior collectively and λ 1/N is a good estimator of the average correlation <C> of the correlation matrix. Second, notably, the authors find the “market mode” is weakened in two crises periods of 2008 stock market crash and 2009 Global Financial Crisis. This is significantly different from other market where the “market mode” is normally strengthened in crises periods. Third, the authors subtract the contribution of λ 1, the second and third eigenvalue, λ 2 and λ 3, will fall outside of the predicted interval. And both λ 2 and λ 3 are getting times larger in the crises periods than in “Non-Crisis” period. Fourth, and in the MST analysis, the authors find again that the average distances of the MST are the times larger in crises periods than in “Non-Crisis” period and the second largest eigenvalue is a good estimator of the average distance of the MST. Originality/value – According to the best knowledge, this paper is the first work on the study of the statistical properties of an interbank lending market using quotation level data of panel banks, which allows us to analyze the properties of the interest rate formation and how all panel banks behavior in different periods. This work is also the first study on the SHIBOR market using econophysics methods of correlation analysis, RMT and MST.

scholarly journals Spectral SAR Ecotoxicology of Ionic Liquids: TheDaphnia magnaCase

2007 ◽  
Vol 2007 ◽  
pp. 1-5 ◽  
Author(s):  
Mihai V. Putz ◽  
Ana-Maria Lacrama ◽  
Vasile Ostafe
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Correlation Analysis ◽  
Daphnia Magna ◽  
Statistical Correlation ◽  
Additive Models ◽  
Activity Relationship ◽  
Spectral Structure ◽  
Unified Theory ◽  
Structure Activity

Aiming to provide a unified theory of ionic liquids ecotoxicity, the recent spectral structure activity relationship (S-SAR) algorithm is employed for testing the two additive models of anionic-cationic interaction containing ionic liquid activity: the causal and the endpoint,|0+〉and|1+〉models, respectively. As a working system, theDaphnia magnaecotoxicity was characterized through the formulated and applied spectral chemical-ecobiological interaction principles. Specific anionic-cationic-ionic-liquid rules of interaction along the developed mechanistic hypersurface map of the main ecotoxicity paths together with the so-called resonance limitation of the standard statistical correlation analysis were revealed.

scholarly journals Juxtaposition of Organizational Competitive Factors and Performance Evaluation in Conjunction with Their Implications for HRM in MNCs: Part Two, Statistical Correlation Analysis within the Polish Findings

2017 ◽  
Vol 9 (3) ◽  
pp. 119-143
Author(s):  
Marzena Stor ◽  
Allen D. Engle ◽  
József Poór
Keyword(s):  
Performance Evaluation ◽  
Correlation Analysis ◽  
Local Level ◽  
Value Added ◽  
Statistical Correlation ◽  
Performance Outcomes ◽  
Performance Evaluations ◽  
Competitive Advantages ◽  
And Performance

AbstractObjective – The main goal of the paper is to determine whether there are any identifiable patterns of HRM perceptions and practices when the factors recognized as the companies’ competitive advantages and results of their performance outcomes are juxtaposed in conjunction with their implications for HRM.Methodology – The research was conducted in five Central and Eastern (CE) countries. The data collected from this region is used to provide a broader comparative context (descriptive statistics) as presented in the earlier article in this volume. This second part provides a more detail correlational analyses conducted on the data coming exclusively from local subsidiaries of MNCs operating in Poland.Findings - In Poland the higher the appraisal of the quality of workforce and the quality of management as the competitive factors at the same time, the higher the level of decentralization. The correlation analysis in the scope of particular areas of performance evaluation and the ratings of critical subfunctions of HR in Poland allow to identify some general patterns.Value added – The research has certain theoretical significance because its results provide some knowledge about the specificity of HRM in local subsidiaries of MNCs operating CE, and particularly exemplifying some regularities within HRM appearing in Poland. Furthermore, it identifies some patterns of HRM perceptions and practices at the local level of MNCs both in CE and Poland, and especially when the factors recognized as competitive advantages of local subsidiaries and the results of performance evaluations of these subsidiaries are reported in conjunction with their implications for HRM. All this makes an empirical contribution to knowledge about SIHRM in MNCs.

Irregular Liesegang-type patterns in gas phase revisited. II. Statistical correlation analysis

2016 ◽  
Vol 144 (17) ◽  
pp. 174702 ◽  
Author(s):  
José C. Torres-Guzmán ◽  
Gustavo Martínez-Mekler ◽  
Markus F. Müller
Keyword(s):  
Correlation Analysis ◽  
Gas Phase ◽  
Statistical Correlation
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