Black–White correlates of job satisfaction.

Multiple regression analysis of a sample made up of 3 independently drawn US national surveys (J. A. Davis, 1972, 1973, 1974) was used to estimate the correlation of 8 variables with job satisfaction among 275 Blacks and 1,748 Whites. Correlations were not large, and results were very similar for both races: With other variables controlled, age was the strongest predictor of job satisfaction, and social class, work autonomy, sex, and education showed no effects. Family income, supervisory position, and occupational prestige correlated with job satisfaction among Whites, but the relationships among Blacks are not significant. (21 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Future economy of electric power generated by nuclear and coal-fired power plants

The available literature (1969–1978) on estimated and predicted costs of nuclear and coal-fired power plants has been examined. The complexity and difficulty of predicting the nuclear power economy are discussed. Scenarios are developed for various capacity factors and fixed charge rates to predict the national electric power economy generated by nuclear and coal-fired power plants between 1979 and 1993.     

Centralized Scheduling and Priority Implementation Heuristics for a Dynamic Job Shop Model

The problem considered is the scheduling of a job shop with job due dates, intermittent job arrivals, and statistical processing times. Centralized scheduling uses a sequence of static problems for generating priorities at review times. A multi-pass heuristic program, which has proven effective in earlier research, is applied to the up-dated static scheduling problem at each review time. A procedure is proposed for implementing priorities on the shop floor between review times. The procedure is expressly designed to integrate the scheduling of newly arriving jobs to modify the schedule. In simulation experiments using tardiness statistics for evaluation, centralized scheduling and the proposed implementation procedure proved to be an extremely effective combination. Comparison with another procedure that gives the centralized schedule precedence over new arrivals indicates the importance of the implementation procedure when periodic centralized scheduling is used in a dynamic situation.     

Overcoming opposition and resistance: Differential functions of expertness and attractiveness in career counseling.

Hypothesized that counselor expertness would be effective in overcoming opposition to the content of counseling, whereas counselor attractiveness would be effective in overcoming resistance to the counseling process. Two studies of career counseling were conducted: a laboratory analog with 36 vocationally undecided undergraduates and a field study with 45 high school sophomores taking a career planning course. In both studies, counselor role (expert or attractive) was crossed with Ss' initial level of resistance in a repeated measures design. Pre- and postmeasures of Ss' attitudes toward vocational exploration (the content of counseling) and attitudes toward counseling were used to assess change in opposition and resistance, respectively. A behavioral compliance measure of opposition was added in Study 2. Study 1 supported only the resistance hypothesis. Study 2 supported both the opposition and resistance hypotheses and thus demonstrated the differential functioning of expertness and attractiveness. Implications for interpersonal influence research and for the practice of career counseling are discussed. (22 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Development of competitive behavior as a function of culture, age, and social comparison.

Observed the choice behavior of 868 dyads of 2nd-, 4th-, and 6th-grade children from 5 different cultural backgrounds (Mexican-American, Anglo-American, Japanese, Greek, and Belgian) in the maximizing difference game, an outcome interdependence task where individualistic and cooperative motives were placed in opposition to competitive ones. In 4 cultures, boys received either social comparison feedback or only information concerning their own cumulative scores. As predicted, the level of competitive responding increased as a function of age, social comparison information, and number of trials. Further, there were systematic cultural differences. A newly developed covariation analysis revealed that individual dyad variation accounted for more covariation than the main effects noted above. Hence, several types of within-dyad analyses were performed. Finally, cultures were classified in terms of the characteristic play by dyad members and the results compared with a classification developed by M. Mead (1937), in which she ordered the cooperative, competitive, and individualistic orientations of members of 13 "primitive" societies. (23 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Cross-linking of macromolecules in coal

Cross-linking in bituminous coals has been studied by internal friction methods. A low temperature damping peak occurring at 130 K for a frequency of 1 Hz has been used to deduce the character of cross-linking in coal. The molecular units responsible for the internal friction are found to be methylene chains connecting ring structures of the macromolecular material. The number varies progressively from a Braunkohle with 67wt% carbon to anthracites of > 90 wt% carbon. The number goes through a maximum at ≈80 wt%C, showing that the cross-link density reaches a maximum at that carbon level. It falls of markedly at higher carbon concentrations and remains at a low level > 85 wt%C. These findings correlate well with models of coal structure.     

Effect of acute dietary alteration upon intestinal lipid synthesis

The specific activities of three enzymes engaged in complex lipid synthesis, diglyceride acyltransferase, cholinephosphotransferase, and lysolecithin acyltransferase were studied in intestinal mucosa of hamsters fed either saline, hydrolyzed casein, or corn oil for 9 1/2 hr. In the most proximal intestine, saline feeding was associated with a reduced specific activity in villous tips with all three enzymes studied when compared with the two caloric supplemented groups. In the most distal intestine, oil feeding increased the activity of lysolecithin acyltransferase and choline phosphotransferase twofold as compared to casein fed hamsters; diglyceride acyltransferase was increased one- and one-half-fold. The response of lysolecithin acyltransferase and diglyceride acyltransferase to fat feeding was incomplete when compared to hamsters fed a fat supplemented diet for 7 days, suggesting that their pattern of response to dietary substrate was similar to the disaccharidases. By contrast, the response of cholinephosphotransferase to fat feeding was complete at 24 hr, suggesting that it responds in a manner similar to the glycolytic enzymes.