Classification of Mass in Two Views Mammograms: Use of Analysis of Variance (ANOVA) for Reduction of the Features

2013 ◽  
Vol 3 (1) ◽  
pp. 80-88 ◽  
Author(s):  
R.S. Jacomini ◽  
M.Z. Nascimento ◽  
R.D. Dantas ◽  
R.P. Ramos
Keyword(s):  
Analysis Of Variance

scholarly journals Characterisation of Vranec, Cabernet sauvignon and Merlot wines based on their chromatic and anthocyanin profiles

2013 ◽  
Vol 78 (9) ◽  
pp. 1309-1322 ◽  
Author(s):  
Maja Dimitrovska ◽  
Elena Tomovska ◽  
Mirjana Bocevska
Keyword(s):  
Analysis Of Variance ◽  
Principle Component Analysis ◽  
The Other ◽  
Cabernet Sauvignon ◽  
Colour Intensity ◽  
Total Polyphenols ◽  
Age Limits ◽  
The Individual ◽  
Grape Varieties

Wines of three different grape varieties, Vranec, Cabernet Sauvignon and Merlot were examined for their characterisation in terms of anthocyanin and chromatic profiles, total polyphenols and antioxidant potential. Total, monomeric, polymeric and copigmented anthocyanins were determined by spectrophotometry and the individual anthocyanin compounds were quantified using HPLC-DAD. Chromatic profile was evaluated according to colour density, hue, % red, % blue, % yellow and brilliance (% dA). The established data were submitted to analysis of variance and principle component analysis in order to evaluate their potential for differentiation of wines according to variety and vintage. Vranec wines have shown distinctive characteristics, with the highest content of anthocyanins and values of colour intensity, % red and % dA, compared to the other two studied varieties. The content of petunidin-3-glucoside, peonindin-3-glucoside and anthocyanin acetates were established as possible markers for differentiation of Vranec wines from Cabernet Sauvignon and Merlot wines. However, none of the assayed parameters could be used for differentiation of Cabernet Sauvignon from Merlot wines. It was observed that wine age limits successful classification of the wines by variety according to anthocyanins. The chromatic parameters allowed distinguishing of young (aged up to 1 year) from old Vranec wines.

Relations among Dimensions of Reading Attitudes and Stages of Internalization of Reading Attitudes Held by Prospective Teachers

1988 ◽  
Vol 67 (2) ◽  
pp. 407-414
Author(s):  
Terry C. Ley ◽  
Barbara B. Schaer ◽  
Jone P. Wright ◽  
Kathy S. Neal
Keyword(s):  
Multivariate Analysis ◽  
Analysis Of Variance ◽  
Prospective Teachers ◽  
Reading Attitudes ◽  
Individual Development ◽  
Reading Attitude ◽  
Significant Function ◽  
Main Effect ◽  
Attitude Scales

To estimate how two reading attitude scales are related, 198 prospective teachers were administered the Mikulecky Behavioral Reading Attitude Measure and the Teale-Lewis Reading Attitude Scales. The former allowed classification of subjects according to Krathwohl's five stages of internalization of attitudes, while the Teale-Lewis scale measured the value subjects placed upon individual development, utilitarian and enjoyment dimensions of reading. Canonical analysis showed that the two instruments are related, with one significant function accounting for 64% of the variance. All subscales contributed significantly. The two-way multivariate analysis of variance with three dependent measures (Teale-Lewis dimensions) and two independent measures (sex and the five Mikulecky stages) gave one significant main effect—the five Mikulecky stages Readers classified at higher stages of internalization of attitudes tended 10 place greater value on all three Teale-Lewis dimensions than did readers at lower stages. Although 22% of the subjects were classified at one of the two highest stages (organization and characterization), 69% were classified at one of the two lowest stages (attending and responding).

Generalization of Results beyond the Experimental Setting: Statistical versus Logical Considerations

1970 ◽  
Vol 31 (2) ◽  
pp. 443-446 ◽  
Author(s):  
Richard J. Neufeld
Keyword(s):  
Analysis Of Variance ◽  
Experimental Situation ◽  
Random Variables ◽  
Experimental Results ◽  
Experimental Setting ◽  
Independent Variables ◽  
Experimental Context ◽  
Entire Complex

The conventional distinction between fixed and random variables in analysis of variance is discussed. It is suggested that certain “incidental” conditions prevailing when experimentation occurs, e.g., time(s) and place(s) of experimentation, can be classified as unbalanced independent variables. Given this classification of these incidental conditions, generalization of experimental results beyond situations exactly duplicating that set of conditions attendant to the experiment, requires either statistical or logical provision. As statistical provision for the entire complex of incidental conditions prevailing during an experiment would be infeasible, logical considerations must be employed in generalization of results beyond the experimental context. It is suggested that to consider incidental conditions of the experimental situation as being unbalanced independent variables should lead to vigilance with regard to those incidental conditions possibly contributing to the obtained experimental outcome. Inasmuch as generalization of obtained results beyond the experimental setting is contingent upon logical considerations, it is suggested that the validity of such logical provision should always be verified by E.

Efficiency of removal in stabilization ponds II. Statistical analysis of K values

1995 ◽  
Vol 31 (12) ◽  
pp. 231-238 ◽  
Author(s):  
B. S. Mendes ◽  
M. J. do Nascimento ◽  
M. I. Pereira ◽  
G. Bailey ◽  
N. Lapa ◽  
...  
Keyword(s):  
Statistical Analysis ◽  
Analysis Of Variance ◽  
Principal Components ◽  
Arrhenius Equation ◽  
Waste Stabilization Ponds ◽  
Stabilization Ponds ◽  
Waste Stabilization

The analytical values obtained from five WSP systems located in different ecoclimatic zones in the centre and South of Portugal, were subjected to a statistical analysis of K and K20 values (as used in the van Hoff-Arrhenius equation) utilizing an analysis of variance and a vectorial analysis of principal components. Significant differences between K and K20 values in facultative, maturation ponds and in the whole system were verified. The projection of the first principal components of eigenvectors made possible the classification of the stations, showing the existence of similarities and discrepancies in their removal BOD kinetics behaviour. The K20 value must be estimated and taken into account for the design of waste stabilization ponds.

scholarly journals Description and Classification of the Youth’s Body Type in Shanghai

2017 ◽  
Vol 6 (1) ◽  
pp. 52
Author(s):  
Shengye Du ◽  
Ling Zhou ◽  
Mengfei Xu ◽  
Jing Bai ◽  
Youjie Zeng
Keyword(s):  
Cluster Analysis ◽  
Analysis Of Variance ◽  
Young Women ◽  
Theoretical Basis ◽  
The Body ◽  
Lower Body ◽  
Body Type ◽  
And Cluster Analysis ◽  
Body Shapes

The carried out standard of the garment size is not able to reflect the body shapes of the modern. In order to achieve a better standard, which is in accord with the requirement of the modern, the figures of 520 women and men, all in the age of 18 to 40, are measured. 18 variables of body shapes are chosen, and 7 variables are derived from them. All the data is processed by SPSS, and one-way analysis of variance (ANOVA) and cluster analysis are used. Both of women’s upper and lower body shapes are classified into 6 categories, and the similar segregation is carried on men with 4 categories, which is an ideal classification. The results offer the support for understanding the current situation of the body shapes of young women and men in Shanghai, for customizing a new standard, and for providing theoretical basis and reference on optimization of designs of clothing structure. 

Philosophical Differences Among Cognitive Behavioral Therapists: Rationalism, Constructivism, or Both ?

1993 ◽  
Vol 7 (2) ◽  
pp. 117-130 ◽  
Author(s):  
Raymond DiGiuseppe ◽  
Jean Linscott
Keyword(s):  
Factor Analysis ◽  
Analysis Of Variance ◽  
Irrational Beliefs ◽  
Empirical Support ◽  
Cognitive Behavioral ◽  
Group Differences ◽  
Significant Group ◽  
Adequate Internal Consistency ◽  
Irrational Thoughts

This study attempted to validate Mahoney’s classification of cognitive behavioral therapists into rationalists or constructivists and to verify his hypothesis that Rational-Emotive therapists hold more rationalist attitudes than do other cognitive behavioral therapists. It was also hypothesized that the preference for disputing irrational thoughts early in therapy would also serve to distinguish between general cognitive behavioral and RE therapists. Cognitive behavioral (CB) and RE therapists completed a questionnaire representing Mahoney’s categorization of rationalist and constructivist philosophies and the preference for disputing irrational beliefs early in therapy. Factor analysis yielded three distinct consistent factors named “rationalism,” “constructivism,” and “early disputing.” Each demonstrating adequate internal consistency. Analysis of variance indicated that RE therapists endorsed significantly more rationalist items than cognitive behavioral therapists. There were no significant group differences in the endorsement of constructivist items or disputing irrational beliefs early in therapy. General CB therapists significantly endorsed more constructivist than rationalist philosophies. Results of the study provide empirical support for Mahoney’s two-factor designation, but provide evidence indicating that rationalism and constructivism are not bipolar philosophies. Therapists can hold beliefs on each separately.

Measurement of Experience: Construct and Content Validity of the Experience Questionnaire

1987 ◽  
Vol 65 (1) ◽  
pp. 315-332 ◽  
Author(s):  
Gayle Privette ◽  
Charles M. Bundrick
Keyword(s):  
Analysis Of Variance ◽  
Repeated Measures ◽  
Peak Performance ◽  
Peak Experience ◽  
Instrument Measuring ◽  
Item Scores ◽  
Events Data ◽  
Experience Questionnaire

The Experience Questionnaire, a research instrument measuring experiential data, was derived from literature on peak performance and peak experience, with constructs extended to comprise negative extremes of performance and feeling. The efficacy of the Experience Questionnaire is tested by addressing accessibility and salience of experiential data and independence of construct events. Data on construct events (peak performance, peak experience, flow, average events, misery, and failure) were gathered from 123 adults. Since over-all event effects were significant on repeated-measures multivariate analysis of variance, discriminant analysis and analysis of variance with repeated measures were used. Construct independence and salience of experiential data are supported by correct classification of 97.7% of construct events and differences among construct events on factor and item scores that provide clear, differential descriptions. Peak performance is characterized by full focus and self in clear process. The role of other people is unimportant. Peak experience is noted for fulfillment, significance, spirituality, and the importance of other people. Play, other people, and outer structure, but not spirituality, are endorsed in flow. Average events have outer structure, but full focus is a negative correlate. Misery is characterized by spirituality and significance, but other people, playfulness, and self in clear process are denied. Failure is characterized by spirituality but lacks fulfillment.

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