Showing papers by "University of Memphis published in 1974"
TL;DR: In this article, the authors show that the following properties are not preserved by passage to the free abelian group: normal, k- sequential, Frechet, Lindelof, paracompact, countably compact, sequentially compact, etc.
Abstract: Main Theorem. The free abelian topological group over a Tychonoff1 space contains as a closed subspace a homeomorphic copy of each finite power of the space. A major and immediate corollary of this theorem is: If P is a closed hereditary property of Tychonoff spaces, and if the free abelian topological group over a Tychonoff spaces has P , then so does every finite power of the space. In particular, the corollary shows that the following properties are not preserved by passage to the free abelian group: normal, k- sequential, Frechet, Lindelof, paracompact, pseudocompact, countably compact, sequentially compact, etc.
211 citations
TL;DR: The Ramsey number problem for cycles is complete by verifying the previously conjectured values of r and s by verifying their previously conjecturing values.
201 citations
49 citations
TL;DR: This paper argued that the replacement of James II by William and Mary was justified most frequently and effectively not by John Locke's Two Treatises of Government, which was indeed composed prior to 1688, but by mat old relic from James I's reign, divine right of kings.
Abstract: After a period of comparative neglect, historians are re-examining the English Revolution of 1688 with revived interest and revised interpretation. In the past few decades numerous works have carefully re-investigated and often reinterpreted the roles played by such disparate groups as the Whigs, die nobility, the common people, and die urban mob, as well as by such leading individuals as die Earl of Sunderland, James II, and William of Orange. They have broadened our perspective of the Revolution by placing it in die wider context of European affairs and have persuasively demonstrated that die replacement of James II by William and Mary was justified most frequently and effectively not by John Locke's Two Treatises of Government, which was indeed composed prior to 1688, but by mat old relic from James I's reign, divine right of kings.
31 citations
01 Jan 1974
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TL;DR: In this article, the microwave spectrum of fluoroacetyl chloride has been studied in the 8-40 GHz region and transitions arising from one conformer have been assigned, possibly due to a second conformer.
20 citations
20 citations
TL;DR: Eight hundred adult Tabanidae representing 20 species in 9 genera were reared from 2,273 field-collected larvae or pupae from the Canal Zone and Republic of Panama during the years 1963-65, and the larva of 1 additional species of Tabanus is also described.
Abstract: Eight hundred adult Tabanidae representing 20 species in 9 genera were reared from 2,273 field-collected larvae or pupae from the Canal Zone and Republic of Panama during the years 1963-65. Pupal specimens of 2 additional species, 1 representing an additional genus, were subsequently obtained. These specimens were used to prepare descriptions of the larva and/or pupa of 2 species of Chrysops, 2 Chlorotabanus , 1 Lepiselaga , 2 Leucotabanus , 1 Pseudacanthocera , 1 Philipotabanus , 1 Stenotabanus , 4 Stibasoma , 1 Poeciloderas , and 7 Tabanus . The larva of 1 additional species of Tabanus is also described. All are described for the first time, except the species of Lepiselaga .
Information published or unpublished on the immatures of 7 other genera, and 24 additional species having Neotropical distribution, is available, and allowed the treatment of 15 and 17 genera in respective generic keys to larvae and pupae. Partial translations of descriptions published in foreign languages are furnished, and short lists of characters are included for all other species as aids to the keys. Citations to all prior descriptions of the immatures treated are included.
19 citations
TL;DR: Albino rats were given either habenular lesions or control operations and evaluated postsurgically during one-way active avoidance and passive avoidance training, and hypotheses of either reduced fearfulness or impairment in motor inhibition mechanisms are suggested as frameworks for future research.
Abstract: Albino rats were given either habenular lesions or control operations and evaluated postsurgically during one-way active avoidance and passive avoidance training. Rats with habenular lesions, particularly those with damage in the posterior aspects of the habenular complex, were significantly impaired during acquisition of the active avoidance task. No significant differences existed between the two groups on either of two passive avoidance measures. The results are discussed in conjunction with the findings of other research, and hypotheses of either reduced fearfulness or impairment in motor inhibition mechanisms are suggested as frameworks for future research.
TL;DR: In this article, two independent methods were used to measure the rate of heat transfer from a hot gas to the walls of a cylindrical combustion chamber in which large-amplitude combustion-driven oscillations accompanied a mean flow.
Abstract: Two independent methods were used to measure the rate of heat transfer from a hot gas to the walls of
a cylindrical combustion chamber in which large-amplitude combustion-driven oscillations accompanied a mean
flow. The results obtained from the two methods were in good agreement and indicated a definite increase in the heat
transfer in the presence of oscillations. The increase was found to vary approximately as the square root of the
oscillation amplitude and as the fourth root of the frequency. A correlation in terms of dimensionless variables
was obtained using the thickness of the acoustic boundary layer as the appropriate length scale.
TL;DR: The habenular area serves as an important link between olfactory sensory input and motor systems in the rat and it appears that the behavioral changes observed are related more to threshold elevation or an impairment in Olfactory integration than to generalized disruption of response inhibition mechanisms.
TL;DR: In this article, an improved result for non-autonomous systems was given for which an invariance principle can be applied to non-linear systems with respect to a Liapunov function.
TL;DR: In this article, the authors show that the differences in intelligence between the two groups are genetically determined, that is, Blacks are innately inferior to whites in intellectual capacity and that any conclusion about the inferiority of Blacks, as a group, can only be considered superficial, for many Blacks are apparently not inferior to their white counterparts.
Abstract: Investigators of the comparative differences in intelligence between Blacks and whites in America invariably have shown the test performances of Blacks to be inferior to those of whites on a variety of instruments. Some investigators (e.g., Garrett, 1960; McGurk, 1951; Shuey, 1966; Tanser, 1939) have argued that the differences in intelligence between the two groups are genetically determined-that is, Blacks are innately inferior to whites in intellectual capacity. However, studies aimed at investigating innate intellectual differences have all suffered from methodological difficulties, especially a failure to control adequately for environmental influences and other sources of bias. Other investigators (e.g., Klineberg, 1944; McQueen and Chum, 1960; Price, 1929; Roen, 1960) have taken the position that the observed differences in intelligence are due to differences in socioeconomic status (SES). Usually, they have attempted to diminish the differences between the groups in intelligence test scores by equating black and white subjects on SES variables. Price (1929) studied the test performances of black and white freshman in black and white colleges, respectively, and found that the difference in median scores was ten points in favor of the white students. He also found that 20 per cent of the scores of the blacks exceeded the median of the whites. Therefore, any conclusion about the inferiority of Blacks, as a group, can only be considered superficial, for many Blacks are apparently not inferior to their white counterparts. While some investigators have used a rather narrow interpretation of SES (e.g., Bruce, 1940; Klineberg, 1944), others have employed multivariable definitions of SES (e.g., Roen, 1960). Nevertheless, Blacks are typically found to score lower than
TL;DR: The present data and those of Hufford indicated that for small stimulus sizes, area has a greater effect than intensity in determining the reaction-time responses.
TL;DR: An easily constructed, highly general test analyzes the ability of various viewers to predict what will happen next in various films and suggests that this is a useful technique for the empirical analysis of visual communication.
Abstract: Clozentropy testng and analysis techniques were adapted to non‐verbal material. An easily constructed, highly general test analyzes the ability of various viewers to predict what will happen next in various films. Validation showed significant differences in both entropy patterns and correct responses for (1) sophisticated and naive viewers, (2) simple and complex films, and (3) general and specific levels of prediction. The results suggest that this is a useful technique for the empirical analysis of visual communication.
TL;DR: Comparisons between the experimental and theoretical moments indicate that the combination of the Del Re σ-electron and Huckel π-Electron methods gave the best reproduction of the experimental dipole moment values while being considerably less expensive in terms of computer size and time, as well as requiring less time in preparing the data.
TL;DR: In this paper, the rotational transitions of 1-nitropropene arising from the ground vibrational state and from three excited states of the nitro torsional vibration have been assigned.
TL;DR: The performance of 23 hearing-impaired children on a closed- response, auditory speech discrimination test and on an open-response, auditoryspeech discrimination test was compared to their performance on a similar test for normal children.
Abstract: The performance of 23 hearing-impaired children on a closed-response, auditory speech discrimination test and on an open-response, auditory speech discrimination test was compared to their performa...
TL;DR: The authors found that white and black boys did not differ in their preference for self-paced and reactive sports activities, regardless of their own racial identity and had several younger siblings and attended schools with a sizeable representation of white students.
Abstract: This study provided support for Worthy and Markle's thesis that whites excel at self-paced and blacks at reactive sports activities, by assessing the performance of 55 white and 122 black fourth-grade boys playing a modified soccer game. The research also explored the relationships between several dimensions of socialization (e.g., father presence-absence) and relative performance on the self-paced-reactive dimension. Two significant correlations emerged: Regardless of their own racial identity, boys who excelled at the self-paced activity tended to have several younger siblings and to attend schools with a sizeable representation of white students. Subsequent interviews revealed that black and white boys did not differ in their preference for self-paced and reactive sports activities.
01 Jan 1974
TL;DR: A VOX technique for reducing noise in voice communication systems is described which is based on the separation of voice signals into contiguous frequency-band components with the aid of an adaptive VOX in each band that can effectively reduce both wideband and narrowband quasi-periodic noise.
Abstract: A VOX technique for reducing noise in voice communication systems is described which is based on the separation of voice signals into contiguous frequency-band components with the aid of an adaptive VOX in each band. It is shown that this processing scheme can effectively reduce both wideband and narrowband quasi-periodic noise since the threshold levels readjust themselves to suppress noise that exceeds speech components in each band. Results are reported for tests of the adaptive VOX, and it is noted that improvements can still be made in such areas as the elimination of noise pulses, phoneme reproduction at high-noise levels, and the elimination of distortion introduced by phase delay.
TL;DR: The evidence suggests the need to reevaluate the presumed anxiety-reducing function of sensitizing behaviors, and in spite of the fact that sensitizers showed greater “approach” responding, they did not reduce their anxiety levels.
Abstract: Repressors, sensitizers, and a control group free-associated to threatening and nonthreatening stimuli for time periods ranging from 1 to 40 sec., giving ratings of affective states after each response period. In spite of the fact that sensitizers showed greater “approach” responding, they did not reduce their anxiety levels. The evidence suggests the need to reevaluate the presumed anxiety-reducing function of sensitizing behaviors.
TL;DR: The U.S. Navy employed this strategy in the case of computer managed instruction and the result was a cost effective computer based instructional system and the prospect of both expansion of the operational system and rapid advancement of the basic technology.
Abstract: One of the means by which progress in a new technology can be accelerated is by bringing one of its systems into operational use at an early stage in the development of the technology. The U.S. Navy employed this strategy in the case of computer managed instruction. The result was a cost effective computer based instructional system and the prospect of both expansion of the operational system and rapid advancement of the basic technology.