GOLDRING, ES, GROSSMAN, LI & MARMUR, J 1971, 'PETITE MUTATION IN YEAST .2. ISOLATION OF MUTANTS CONTAINING MITOCHONDRIAL DEOXYRIBONUCLEIC ACID OF REDUCED SIZE', JOURNAL OF BACTERIOLOGY, vol. 107, no. 1, pp. 377-&.
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GROSSMAN, LI, CRYER, DR, GOLDRING, ES & MARMUR, J 1971, 'PETITE MUTATION IN YEAST .3. NEAREST-NEIGHBOR ANALYSIS OF MITOCHONDRIAL DNA FROM NORMAL AND MUTANT CELLS', JOURNAL OF MOLECULAR BIOLOGY, vol. 62, no. 3, pp. 565-&.
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Leslie, LM 1971, 'The development of concentrated vortices: A numerical study', Journal of Fluid Mechanics, vol. 48, no. 1, pp. 1-21.
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Amongst the more important laboratory experiments which have produced concentrated vortices in rotating tanks are the sink experiments of Long and the bubble convection experiments of Turner & Lilly. This paper describes a numerical experiment which draws from the laboratory experiments those features which are believed to be most relevant to atmospheric vortices such as tornadoes and waterspouts. In the numerical model the mechanism driving the vortices is represented by an externally specified vertical body force field defined in a narrow neighbourhood of the axis of rotation. The body force field is applied to a tank of fluid initially in a state of rigid rotation and the subsequent flow development is obtained by solving the Navier–Stokes equations as an initial-value problem. Earlier investigations have revealed that concentrated vortices will form only for a restricted range of flow parameters, and for the numerical experiment this range was selected using an order-of-magnitude analysis of the steady Navier–Stokes equations for sink vortices performed by Morton. With values of the flow parameters obtained in this way, concentrated vortices with angular velocities up to 30 times that of the tank are generated, whereas only much weaker vortices are formed at other parametric states. The numerical solutions are also used to investigate the comparative effect of a free upper surface and a no-slip lid. The concentrated vortices produced in the numerical experiment grow downwards from near the top of the tank until they reach the bottom plate whereupon they strengthen rapidly before reaching a quasi-steady state. In the quasi-steady state the flow in the tank typically consists of the vortex at the axis of rotation, strong inflow and outflow boundary layers at the bottom and top plates respectively, and a region of slowly-rotating descending flow over the remainder of the tank. The flow is cyclonic (i.e. in the same sense as the tank) in the vortex core and over ...
Ollendick, T, Balla, D & Zigler, E 1971, 'Expectancy of success and the probability learning of retarded children', Journal of Abnormal Psychology, vol. 77, no. 3, pp. 275-281.
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Tested 23 male and 22 female institutionalized retarded children who had previously experienced either a success, failure, or control precondition on a probability learning task designed to assess expectancy of success. Ss were matched for CA, MA, IQ, and length of institutionalization. The following measures were also collected as S variables: Locus-of-Control Scale, Cottage Rating Scales, school rating, and Reading and Arithmetic subscales from the Metropolitan Achievement Test. The preconditions were found to have many of the expected effects on the cognitive strategies employed in the learning task. Ss in the failure condition showed the greatest avoidance of failure (maximizing strategy), while Ss in the success condition tended to show more success striving (lose-shift strategy). Males were found to exhibit more failure-avoiding strategies than females. The overall pattern of results is interpreted as providing support for the hypothesis that a low expectancy of success in retarded children can be modified. (19 ref.) (PsycINFO Database Record (c) 2006 APA, all rights reserved). © 1971 American Psychological Association.
Ollendick, TH & Gruen, GE 1971, 'Level of n achievement and probability in children', Developmental Psychology, vol. 4, no. 3, p. 486.
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Examined the relationship of need for achievement (n Ach) to performance on a 3-choice probability learning task in which 1 stimulus was partially reinforced and the other 2 were not. 27 upper middle-class 3rd graders were equally divided into high, medium, and low n Ach groups. The prediction that high n Ach Ss would chose the reinforcing stimulus less and make more patterned responses was confirmed. Each group differed significantly from the others, with the low group making the greater number of correct responses. The pattern of the low groups response was similar to that which has been found in lower-class and retarded Ss. (PsycINFO Database Record (c) 2006 APA, all rights reserved). © 1971 American Psychological Association.
SMITH, DA & SMITH, GB 1971, 'X-D EXCHANGE INTEGRALS OBTAINED FROM EXPERIMENT IN CU-MN, AG-MN, AND AU-MN', PHYSICAL REVIEW B-SOLID STATE, vol. 4, no. 1, pp. 191-+.
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WOLFF, S, PEACOCK, WJ & LINDSLEY, DL 1971, 'CHANGES IN SUBUNIT POLARITY WITHIN MAMMALIAN CHROMOSOMES', GENETICS, GENETICS, pp. S75-&.
