Showing papers by "University of Delaware published in 1968"
230 citations
180 citations
166 citations
TL;DR: The development of interpersonal relationships: social Penetration Processes as mentioned in this paper was a seminal work in the field of social psychology, focusing on the relationship between individuals and their social relations. The Journal of Social Psychology: Vol. 75, No. 1, pp 79-90.
Abstract: (1968). The Development of Interpersonal Relationships: Social Penetration Processes. The Journal of Social Psychology: Vol. 75, No. 1, pp. 79-90.
159 citations
TL;DR: Auditory projections were studied, by the Nauta method, from medullary to mesencephalic levels following lesions in nuclei magnocellularis, angularis and laminaris and transection of the dorsal cochlear decussation and trapezoid body in the midline of the medulla.
Abstract: Auditory projections were studied, by the Nauta method, from medullary to mesencephalic levels following lesions in nuclei magnocellularis, angularis and laminaris and transection of the dorsal cochlear decussation and trapezoid body in the midline of the medulla.
Fragmented axons project bilaterally to nucleus laminaris from the medial part of nucleus magnocellularis. Degenerated fibers from the lateral part of nucleus magnocellularis, medial part of nucleus angularis. and nucleus laminaris projects to the homolateral superior olivary nucleus. cross the raphe in the trapezoid body, ascend in the contralateral lateral lemniscus, distribute to the ventral and lateroventral nuclei of the lateral lemniscus and, at least third order axons from nucleus laminaris. terminate in nucleus mesencephali lateralis pars dorsalis. No ascending auditory neurons project, even following midventral section of the trapezoid body, to nucleus isthmi, nucleus semilunaris nor. with certainty, to the dorsal nucleus of the lateral lemniscus.
This study supports the homology of the avian nucleus mesencephali lateralis pars dorsalis and nucleus laminaris with the mammalian central nucleus of the inferior colliculus and medial superior olivary nucleus respectively. Furthermore, on the basis of fiber projections and cellular organization. nucleus magnocellularis of the pigeon appears to correspond to the anterior ventral cochlear of higher mammals and the medial parts of nucleus angularis to the posterior ventral cochlear nucleus.
118 citations
TL;DR: In this article, the motion of a moving threadline under planar periodic boundary excitation is examined and exact solutions of the non-linear system are developed to predict instabilities of a hard spring nature.
Abstract: The motion of a moving threadline under planar periodic boundary excitation is examined. Equations of motion are formulated and include the variables of displacement, velocity, tension and mass. Two exact solutions of the non-linear system are developed. Numerical solutions of simplified models predict instabilities of a hard spring nature. Experiments show that the plane motion is truly non-linear and does have a hard spring jump that is basically a critical velocity effect. Additionally a three dimensional balloon occurs which also shows a jump of a completely different character.
61 citations
TL;DR: In this paper, a general empirical correlation between diffusivity and physical properties of binary alloys has been established, where the interdiffusion coefficient is the product of an activity-corrected diffusion coefficient D AB and a thermodynamic factor which represents the departure from ideality of the solution AB = D AB α AB = (1 + (dlnα A dlnN A )
47 citations
46 citations
TL;DR: In this paper, the electron spin resonance of the phosphorescent state of pyrazine as a guest in paradichlorbenzene was investigated using a microwave-optical double quantum method.
43 citations
TL;DR: In this paper, a class of unbalanced bidding problems appropriate for unit price proposals is defined, and several models for optimal unbalancing of a bid are constructed using a linear programming formulation.
Abstract: A class of unbalanced bidding problems appropriate for unit price proposals is indentified. Using the present worth of future revenue as an objective, several models are constructed for optimal unbalancing of a bid. A linear programming formulation is found to emerge in a natural way. The implications of unbalanced bidding to both the bidder and the sponsor are considered.
39 citations
TL;DR: It was concluded that a forebrain excitatory mechanism influences mesencephalic units via a fast-conducting direct pathway; a fore brain inhibitory mechanism influences Mesencephalo-reticular units through a slow- Conducting or multisynaptic pathway (perhaps both); and behavioral effects produced by low-frequency caudate and capsular stimulation may be mediated by an alteration or perhaps disruption of the ongoing neuronal activity in the mesencephic arousal system.
TL;DR: In this paper, it was shown that the Einstein relation between mobility and diffusion coefficient is exact in higher approximations, contrary to previous conjectures, and an explicit expression for the deviations from Blanc's law for ions in a binary gas mixture was obtained in second Chapman-Enskog approximation.
Abstract: Ion mobilities in gas mixtures are investigated by rigorous kinetic theory. It is shown that the Einstein relation between mobility and diffusion coefficient is exact in higher approximations, contrary to previous conjectures, and an explicit expression for the deviations from Blanc's law for ions in a binary gas mixture is obtained in second Chapman–Enskog approximation. Numerical calculations show that deviations from Blanc's law are usually small, as expected, but that systems with large deviations are possible. The results apply generally to any tracer diffusion, and are not limited to ions.
TL;DR: A rapid method for locating brain electrode placement histologically is described in this article, where frozen unstained sections are mounted in a solution of glycerine and water and cover slipped.
TL;DR: In this paper, it was shown that stationary cathode-adjacent high-field domains occur dependent on electron density at the cathode and applied voltage at applied voltages above the range at which cathodeadjacent domains are observed or as the only domain type possible with an injecting cathode.
Abstract: It is shown that in n-type material with negative differential conductivity due to field quenching, stationary cathode- or anode-adjacent high-field domains occur dependent on electron density at the cathode and applied voltage. Cathode-adjacent high-field domains can be observed only with a blocking cathode. Anode-adjacent high-field domains occur with a slightly blocking cathode at applied voltages above the range at which cathode-adjacent domains are observed or as the only domain type possible with an injecting cathode. With different cathode metals evaporated onto the same CdS:Ag, Al crystal the electron density in the conduction band n1(E) for space charge free conditions has been determined as a function of the actual field between 0 and 240 kV/cm.
Es wurde gezeigt, das in n-leitendem Material mit negativ differentiellem Widerstand, der durch Feldtilgungseffekte verursacht ist, stationare Hochfelddomanen an der Kathode oder Anode in Abhangigkeit von der Elektronenkonzentration an der Kathode und von der angelegten Spannung auftreten. Hochfelddomanen an der Kathode konnen nur mit blockierender Kathode beobachtet werden. Hochfelddomanen an der Anode treten bei einer schwach blockierenden Kathode auf, wenn die angelegte Spannung oberhalb des Bereiches der Hochfelddomanen an der Kathode liegt, oder sie treten als einzig moglicher Domanentyp bei injizierender Kathode auf. Mit verschiedenen Kathodenmaterialien, die auf denselben (CdS:Ag, Al)-Kristall aufgedampft waren, wurde die Elektronenkonzentration im Leitungsband n1(E) fur den raumladungsfreien Fall als Funktion der wirkenden Feldstarke zwischen 0 und 240 kV/cm bestimmt.
TL;DR: In this article, various modifications to the monopropellant solid oxidizer ammonium perchlorate are described and the theoretical adiabatic combustion species for AP and dihydroxy glyoxime (DHG) at 1, 34 and 68 atmospheres are given.
Abstract: : Various modifications to the monopropellant solid oxidizer ammonium perchlorate are described. Cation replacement, or 'doping' of AP by Sr(++) ion and deuteration to provide ND4ClO4 did not alter the burning rate from that of pure NH4ClO4 at 14.7 psia. Hydrated aluminum sulfate shows an ability to extinguish AP combustion at the 5% level, whereas 2% does not even alter the burning rate at atmospheric pressure. The theoretical adiabatic combustion species for AP and dihydroxy glyoxime (DHG) at 1, 34 and 68 atmospheres are given. DHG produces fuel rich rather than oxygen rich monopropellant combustion species.
TL;DR: In this paper, an electro-optical method using the Franz-Keldysh effect was employed for domain observation in CdS and the influence of the distance between the electrodes on domain formation was discussed.
Abstract: In CdS, unstable moving domains are observed, which exist in a current-voltage range between the range for stationary electrode-adjacent domains and the range for transitions to undeformed moving domains. These current–voltage ranges have been investigated in the same crystal by changing the electron concentration at the boundary of a pseudocathode. Several CdS crystals, differently doped with Ag, Al, and Cu, have been investigated. An electro-optical method using the Franz-Keldysh effect was employed for domain observation. The influence of the distance between the electrodes on domain formation is discussed.
In CdS werden nichtstabile, wandernde Domanen beobachtet, die in einem Strom-Spannungs-Bereich existieren, der zwischen dem Bereich der stationaren, an der Elektrode anliegenden Domanen und dem Ubergangsbereich zu undeformierten, wandernden Domanen liegt. Diese Strom-Spannungs-Bereiche wurden in demselben Kristall durch Anderung der Elektronenkonzentration an der Grenzschicht einer Pseudokathode untersucht. Verschiedene CdS-Kristalle, die unterschiedlich mit Ag, Al und Cu dotiert waren, wurden untersucht. Eine elektro-optische Methode, die den Franz-Keldysh-Effekt ausnutzt, wurde fur die Beobachtung der Domanen verwendet. Der Einflus des Elektrodenabstandes auf die Domanenausbildung wird diskutiert.
TL;DR: In this article, the Berg-Barrett X-ray diffraction contrast technique has been used to observe dislocation arrangements beneath the cleavage surfaces of pure zinc crystals after they had been subjected to either a particular chemical polishing treatment or a heavy etching.
Journal Article•
TL;DR: Derivatives of 2-diphenylacetyl-1,3-indandione have proved useful in identification of a wide variety of functional groups in organic compounds, and an account is given of their application in qualitative analysis.
TL;DR: The electrical discharges associated with prolonged relaxation and the localization of tonic responses to the stimulated region suggest that the tonic contraction is a tetanic response to repetitive firing of ganglion cells seen in the mantle.
TL;DR: In this paper, an analytical model was developed that considers the effect of a run of boundary-layer growth preceding a transpiration surface, and the model consists of a laminar, incompressible boundary layer on a flat plate.
Abstract: An analytical model is developed that considers the effect of a run of boundary-layer growth preceding a transpiration surface. The model consists of a laminar, incompressible boundary layer on a flat plate. The solution considers the classical Blasius solution to generate the initial conditions over the solid portion of the boundary layer and is extended into the transpiration region by applying a finite difference technique. It was found that the solid leading edge had a significant effect on the magnitude of the skin-friction coefficient over the transpiration surface. It is clear that further investigations are required for transpiration systems preceded by a run of boundary-layer growth over a solid leading edge.
TL;DR: This experiment was designed to survey mature sperm and all different stages of oogenesis for mutational effects, particularly dominant lethality, recessive lethal and visible mutation frequencies, and inherited partial sterility.
Abstract: experiment was designed to survey mature sperm and all different stages of oogenesis for mutational effects, particularly dominant lethality, recessive lethal and visible mutation frequencies, and inherited partial sterility. These were scored at all stages of the life cycle and all are total genome effects. Additional data were collected and are being accumulated on survival, life span, and biochemical and behavioral differences of the animals themselves.
01 Sep 1968
TL;DR: For instance, Deno et al. as discussed by the authors compared the effect of using pictures or words as stimuli (e.g., Kale, Grosslight, & McIntyre, 1955; Bousfield, Esterson, & Whitmarsh, 1957; Ducharme & Fraisse, 1965; Lumsdaine, 1949; Deno, 1968; Jenkins, Neale & Deno 1967).
Abstract: At various times research investigators have compared the effect upon learning of using pictures or words as stimuli (for example: Kale, Grosslight, & McIntyre, 1955; Bousfield, Esterson, & Whitmarsh, 1957; Ducharme & Fraisse, 1965; Lumsdaine, 1949; Deno, 1968; Jenkins, Neale & Deno, 1967). The general result of these comparisons has been that word and picture stimuli produce differential effects in tasks of learning and retention. In spite of these effects and the potential significance, both educational and psychological, of research on words and pictures, no systematic attempt has been made to establish a basis for the differential effects obtained, and no theoretical model exists to suggest programs of research. The type of situation which seems to bear the closest relationship to the effects obtained in learning and retention with word and picture stimuli is that in which free association data