Automatic Phase Alignment for the Karhunen-Loève Expansion

A procedure for automatic phase alignment of training waveforms prior to computation of K-L basis functions is described. Two computer algorithms for accomplishing the phase alignment which have been developed and applied to electrocardiogram waveforms are discussed. One is a local maximum seeking algorithm which works well for waveforms which are already nearly aligned. The other, a global maximum seeking algorithm, has been successfully applied to highly misaligned sets of waveforms. Extension of the procedure to automatic frequency alignment is also discussed.     

Reliability of measurement and the power of statistical tests: Some new results.

The authors (see record 1979-00153-001) argued that the reliability coefficient for the dependent variable in a controlled experiment has no direct relevance for hypothesis testing. Specifically, they demonstrated that increasing the reliability coefficient for the dependent variable did not necessarily increase the power of standard statistical tests. The authors present further evidence that large reliability coefficients are not always desirable in true experiments, and replies to J. P. Sutcliffe's (see record 1980-29332-001) basic criticisms of Nicewander and Price's contentions. (6 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Positive transfer from successive reversal training to learning set in blue jays ( Cyanocitta cristata ).

Five blue jays received 160 successive reversal training (SRT) problems and were then tested on 96 learning set (LS) problems. During LS testing, SRT birds performed at higher levels than did 5 jays that had received an equivalent amount of experience on a single problem (SP), but they performed at lower levels than did 5 jays that had received 160 previous LS problems. In addition, the SP birds performed better than did naive birds that were given LS testing directly after pretraining. Analyses of the effects of the Trial 1 outcome indicated that win-stay strategy learning may have produced the SP transfer and that lose-shift learning definitely contributed to SRT transfer. Results strongly support the conclusion that the learning of a win-stay, lose-shift response strategy underlies LS performance in blue jays. (19 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Higher order need strengths as moderators of the job scope–job satisfaction relationship.

Questionnaire data on job characteristics, personality traits (Personality Research Form), and job satisfaction (Brayfield-Rothe Job Satisfaction Index) were obtained from 340 employees of a manufacturing organization. Moderated regression and subgroup analyses were performed to determine the extent to which 2 personality traits, need for achievement and need for autonomy, moderated the relationship between job scope and satisfaction with the work itself. The subgroup analysis showed no moderating effect for need for autonomy and moderating effects inconsistent with previous research and theory for need for achievement. Moderated regression showed no moderating effect for need for autonomy and a moderating effect of negligible practical importance for need for achievement. (37 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Conceptual system as a predisposition toward therapeutic communication.

Investigated the relationship between conceptual level and counselor trainee behavior in a counseling analog. Comparison of the verbal responses of 86 graduate student counselors, using the 6 categories of E. Amidon's counselor interaction analysis and Griffin's Counselor Verbal Response Scale, indicated differences in the response patterns of students as a function of their conceptual level. It is concluded that conceptual level may be an important variable for counselor selection and program development. (16 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Androgyny and other measures of masculinity-femininity.

Analyzed S. L. Bem's measures of Masculinity (M), Femininity (F), and the absolute value of her androgyny measure by the prinicipal-components method with the Masculinity-Femininity scales from the MMPI, the California Psychological Inventory, the Omnibus Personality Inventory, and the Need for Heterosexuality scale of the Adjective Check List. Separate analyses for 59 male and 58 female undergraduates yielded the same 3 orthogonal components for each sex: masculinity-femininity, heterosexuality, and androgyny. The 3 Masculinity-Femininity scales contributed to the 1st component. Heterosexuality and Bem's M and F scales contributed to the 2nd. Androgyny and M (for the males) and F (for the females) contributed to the 3rd. Results support Bem's (1974, 1975) statements about androgyny and show that sex role traits are organized similarly for males and females. (15 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A test of "strain toward symmetry" theories.

"2 studies have been reported which offer some support to the 'strain toward symmetry' hypothesis. GSR deflections were found to be associated with disagreement with a positively valent experimenter. 2 topics were used as matters for disagreement, but we were unable to discover significant differences in the deflections associated with the topics used." (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The effect of microstructure on the hot salt stress corrosion susceptibility of titanium alloys

It was the purpose of this study to identify what metallurgical processes could be applied to commercial structural titanium alloys to increase the hot salt stress corrosion (HSSC) threshold stress and therefore increase their range of application. Toward this purpose Ti-6A1 and Ti-6A1-4V were evaluated as a function of microstructural variables. Specifically, it was shown that both increasing amounts of cold work and increasing grain size decrease HSSC resistance of Ti-6A1. Also, for Ti-6A1-4V it was shown that preferred orientation can have a profound effect on the HSSC resistance. Crack initiation time, crack growth rate, and stress rupture life were evaluated in Ti-6A1-4V as a function of applied stress at 727 K. These results indicate that HSSC cracking can be described by a critical resolved shear stress criterion, and that increased high temperature creep resistance and decreased room temperature notch rupture strength combine to increase HSSC susceptibility and embrittlement.