Showing papers by "University of Windsor published in 1973"
TL;DR: The results argue for very guarded clinical inrerpretation of WISC Verbal IQ-Performance IQ discrepancies of this magnitude in the case of younger children exhibiting learning disabilities.
Abstract: Summary.-82 5- to 8-yr.-old children (IQ range 79 to 120) exhibiting learning disabilities were divided into three groups on the basis of heir WISC Verbal IQ and Performance 1Q: a high Performance IQ-Low Verbal IQ group, a Verbal IQ equal to Performance IQ group, and a high Verbal IQ-low Pecformance 1Q group. The three groups were equated for age and Full Scale IQ. The performance of these Ss on selected measures of verbal, auditory-perceptual, visual-perceptual, problem-solving, motor, and psychomotor abilities did not yield the same clear-cut differences observed in previous studies with older (9to 14-yr.-old) children with learning disabilities who had been divided into groups on the basis of WISC Verbal IQ-Performance IQ discrepancies of an identical magnitude. These results argue for very guarded clinical interpretation of WISC Verbal 1Q-Performance JQ discrepancies of this magnitude in the case of younger children exhibiting learning disabiliues. The psychological significance of discrepancies between Verbal Intelligence Quotient (Verbal IQ) and Performance Intelligence Quotient (Performance IQ) on the WISC has been the focus of a number of studies (e.g., Belmonc & Birch, 1966; Graham, 1952; Reed, 1967; Rourke & Telegdy, 1971; Rourke, Young, & Flewelling, 1971). Such investigations have usually involved a division of groups of Ss inco chose wich a high Verbal IQ (HV) and a low Performance IQ (LP), those with a high Performance IQ (HP) and a low Verbal IQ (LV) and, occasionally, those with equal or nearly equal IQs on the cwo scales. One rather consistent finding is that older children with Verbal IQ-Performance IQ discrepancies, favouring Performance IQ did relatively poorly on language- and school-related tasks, especially reading. For example, in an attempt to define some of the developmental parameters of reading, Reed (1967) used a 10-point discrepancy between WISC Verbal IQ and Performance IQ to separate children into HV-LP and HP-LV groups; his third one (V = P) had no difference becween VIQ and PIQ. With WISC Full Scale IQ introduced as a covariate, the groups of younger (6-yr.-old) children did not differ in reading achievement. However, there was a significant relationship between reading achievement and Verbal IQ-Performance IQ discrepancies for older ( 10-yr.-old) children, wich the HV-LP group performing at a level superior to that of the HP-LV group. (For the purposes of the present study, it is important to note that Reed's younger and older groups did not perform in a similar fashion.) In another study, Rourke, et al. (1971) used a method similar to Reed's (1967) for composing three groups
51 citations
TL;DR: Comparison of the number of gallbladder operations carried out in 1961 and 1971 in three similar towns in Canada, France, and England suggest that the incidence ofgallbladder disease is six times higher in North America than in Western Europe, and nine times higher for patients below the age of 35.
44 citations
TL;DR: A vicarious superiority theory of humor is examined and each of the two groups tended to find that permutation of jokes funnier in which its positive identification class was victorious and its negative the butt than was the opposite permutation in which the negative identification classwas victorious and the positive the butt.
Abstract: Summary The present experiment tests Hobbes' superiority theory of humor in relation to identification classes (a replacement for the construct of reference group)—i.e., a vicarious superiority theory of humor is examined. Joke content concerns Canadian-American relations. Ss were selected so as to be either pro-Canadian Canadians or pro-American Americans. Consistent with prediction (p < .01) each of the two groups tended to find that permutation of jokes funnier in which its positive identification class was victorious and its negative the butt than was the opposite permutation in which the negative identification class was victorious and the positive the butt.
39 citations
TL;DR: For example, this paper found that the categorically grouped presentation facilitated free recall performance, both in terms of number of items recalled and the speed with which the items were recalled, and increased the amount of clustering in recall.
30 citations
TL;DR: In this article, the massless Dirac equation is considered in the presence of weak external gravitational fields, and solutions are found which are analogous to those giving rise to the Aharonov-Bohm effect in electromagnetic theory.
Abstract: The massless Dirac equation is considered in the presence of weak external gravitational fields. In the presence of fields arising from moving mass currents, solutions are found which are analogous to those giving rise to the Aharonov-Bohm effect in electromagnetic theory. The mass currents play the role of the magnetic fields. Comparison is made with earlier analogous solutions by Plebanski and by Balazs and Bertotti, and an alternative physical interpretation is offered in which simply connected currents can produce an effect which is observable in principle.
29 citations
TL;DR: In this paper, the rate equations for the molecular state densities and mode photon densities were set up for a flashlamp-pumped tunable dye laser and the untuned dye laser line shape was also calculated.
Abstract: The rate equations for the molecular state densities and mode photon densities are set up for a flashlamp-pumped tunable dye laser. These are solved numerically for a typical rhodamine 6G laser tuned by a Fabry-Perot etalon and the results compared with experiment. The untuned dye laser line shape is also calculated and compared with experiment.
26 citations
24 citations
TL;DR: In this paper, the behavior of curved web is examined under different combinations of membrane stresses using the linear theory of shells and the critical limit is calculated using two modified simultaneous homogenous differential equations and the Galerkin's method.
Abstract: Normal stresses, caused by bending of a girder in the direction of its curved web, have an effect equivalent to lateral pressure on the web. Except for pure shear, the problem of a curved web subjected to inplane membrane stresses is not a buckling but rather a deflection amplification problem. The membrane stresses cannot exceed a certain critical limit at which the deformation of the web theoretically reaches infinity. The behavior of curved webs is examined under different combination of membrane stresses using the linear theory of shells. The critical limit is calculated using two modified simultaneous homogenous differential equations and the Galerkin's method. The two differential equations lead to a system of linear homogenous equations from which the minimum eigenvalues of the critical load are calculated and presented in tables and curves. Approximate conservative formulas are also given for practical applications.
19 citations
TL;DR: In this article, nonrelativistic variational energies for the 1s3d(/sup 1,3/D) states of the helium iso-electronic sequence are calculated with a 50-term correlated basis set for Z = 2 to 10, where Z is the nuclear charge, and corresponding Z-expansion coefficients found through sixth order by fitting the energies to a series in Z/sup -1/.
Abstract: Nonrelativistic variational energies for the 1s3d(/sup 1,3/D) states of the helium iso-electronic sequence are calculated with a 50-term correlated basis set for Z = 2 to 10, where Z is the nuclear charge, and the corresponding Z- expansion coefficients found through sixth order by fitting the energies to a series in Z/sup -1/. A variational-perturbation calculation of these coefficients through eleventh order (with the same basis set) is presented for comparison, and agreement is satisfactory. The 3d energies obtained by summing the Z-expansion perturbation series are found to yield excellent approximations to the variational values. The calculations are extended to the 1s4d(/sup 1,3/ D) states to furnish variational energies for neutral helium and perturbation energies for the higher sequence members. All of these results are the most accurate yet reported. (auth)
18 citations
TL;DR: In this article, the authors investigated the effect of the urban area on the microclimate of Detroit-Windsor by using three-hourly temperature data for a 10-year period for City, Metropolitan and Windsor airports.
Abstract: In the present study, a beginning is made into the investigation of the effect of the urban area on the microclimate of Detroit-Windsor. Diurnal and seasonal urban-rural temperature differences were investigated using three-hourly temperature data for a 10-year period for City, Metropolitan and Windsor airports. Maximum differences were observed in early morning hours and minimum or zero differences at midday. Seasonally, maximum differences were observed in August–October and minimum differences in January–March. The differences between urban and rural atmospheric transmissivity ratios were investigated for clear winter days using a Kipp and Zonen pyranometer and a model to predict incoming solar radiation at the top of the atmosphere. Urban ratios averaged 9% less, and under calm conditions, reached 25% less than in adjacent rural areas. Data from the South Eastern Michigan Council of Governments precipitation network in the Detroit area were used in a comparison with regional seasonal precipit...
18 citations
01 Jan 1973
TL;DR: In this article, an analysis and interpretation of Rb-Sr data on 17 granite and porphyry pebbles from the White Lake metaconglomerate indicate a maximum possible age for the source rocks of the clasts at 2885 ± 160 m.y.
Abstract: Analyses and interpretation of Rb-Sr data on 17 granite and porphyry pebbles from the White Lake metaconglomerate indicate a maximum possible age for the source rocks of the clasts at 2885 ± 160 m.y. However, we favour a more conservative interpretation of our data as, simply, older than 2670 m.y., and also we caution against the use of these data to support the existence of a pre-Kalgoorlie System granitic basement. The lower limit for the age of the conglomerate is 2550 m.y., imposed by a Rb-Sr age on a biotite from the matrix of the conglomerate. Another control on the minimum age of the metaconglomerate is 2620 ± 20 m.y. imposed by the isochron for the Mungari granite, which is considered as younger than the White Lake metaconglomerate.
TL;DR: In this article, the authors report anomalously low palaeomagnetic inclinations compared to coeval rocks from the rest of the North American plate and suggest that the discordance results from post-emplacement northward translation of the western Cordillera by about 25 arc deg relative to the American craton.
Abstract: Beck and Noson1 report that three sites from a Cretaceous (≈85 m.y.) granitic batholith in the Cascade Mountains of central Washington, USA, give anomalously low palaeomagnetic inclinations compared to coeval rocks from the rest of the North American plate. They suggest that the discordance results from post-emplacement northward translation of the western Cordillera by about 25 arc deg relative to the North American craton. Here I report palaeomagnetic results from 17 sites of Cretaceous (≈95 m.y.) quartz diorites and grano-diorites collected along Howe Sound in southwestern British Columbia. These plutonic rocks are geologically part of the Coast Crystalline Belt of the western Cordillera graphically part of the Coast Mountains which are the northward continuation of the Cascade Mountains. The pole position for these sites is not significantly different from Cretaceous positions for units from cratonic North America and therefore does not support the hypothesis of northward tectonic translation of the western Cordillera relative to the craton.
TL;DR: In this paper, trajectories of two charged particles of equal mass were calculated for straight-line motion using retarded fields without radiation reaction, and both attractive and repulsive interactions were considered, and no lower limit was found for the distance of closest approach as initial velocities are increased.
Abstract: Trajectories of two charged particles of equal mass have been calculated for straight-line motion using retarded fields without radiation reaction. Both attractive and repulsive interactions are considered. For the attractive case, in which particles are released from rest with various initial separations $d$, the acceleration is shown to approach - $\sqrt{2}$ (in natural units) as the particles approach each other, and oscillations with are significant for $d\ensuremath{\lesssim}1$ are strongly damped for $dgg1$. For the repulsive case, in which the particles are thrown directly at one another with high initial velocity, no lower limit is found for the distance of closest approach as initial velocities are increased. Furthermore, the particle energy is found to increase during collision. We explain this result in terms of an energy-conservation theorem and discuss its significance with regard to the omission of radiation reaction.
TL;DR: In this article, the spatial and Burgers vector distribution of dislocations after fatigue deformation of copper single crystals containing alumina particles is described as a function of cumulative plastic strain and of plastic strain amplitude, γp.
TL;DR: An important product, C5H6O2, from the pyrolytic decomposition of phosphoric acid, treated cellulose was isolated and identified as cis-4,5-epoxy-2-pentenal.
Abstract: An important product, C5H6O2, from the pyrolytic decomposition of phosphoric acid, treated cellulose was isolated and identified as cis-4,5-epoxy-2-pentenal. NMR, IR UV, and mass-spectral data of this product were analyzed and discussed. A method for the preparation of cis-4,5-epoxy-2-pentenal is presented, and a mechanism for its formation is proposed.
TL;DR: In this paper, a high-resolution absorption spectrum of the lowest 4.5d transition of the Ce+3 transition in Ca${\mathrm{F}}_{2}$ is presented showing a rich vibronic structure.
Abstract: A high-resolution absorption spectrum of the lowest $4f\ensuremath{\rightarrow}5d$ transition of ${\mathrm{Ce}}^{+3}$ in Ca${\mathrm{F}}_{2}$ is presented showing a rich vibronic structure. The observed structure leads to an entirely different interpretation of the spectrum from that proposed by Loh.
TL;DR: A procedure for the quantitative extraction of the 4-heptanone oxime complex of palladium(II) chloride into chloroform from a 1M hydrochloric acid solution is outlined in this article.
Abstract: A procedure is outlined for the quantitative (i. e.>99.9%) extraction of the 4-heptanone oxime complex of palladium(II) chloride into chloroform from a 1M hydrochloric acid solution. The effects due to hydrochloric acid, alcohol and oxime concentrations are described. Cobalt(II) and Copper(II) are not extracted in macroscopic amounts.
TL;DR: In this paper, a multidimensional Newton-Raphson method was used to fit the ERS spectra of Ca(OH) 2 :Gd 3+ to an arbitrary number of experimental data gathered at arbitrary crystal orientations, yielding trigonal and second-order axial spin-Hamiltonian parameters.
01 Jan 1973
TL;DR: An elementary proof of the existence of J. K. Brooks' control measure for an s-bounded finitely additive set function on a ring to a Banach space is given in this paper.
Abstract: An elementary proof is given of the existence of J. K. Brooks' “control measure” for an s-bounded finitely additive set function on a ring to a Banach space. The proof yields a Vitali-Hahn-Saks theorem for group-valued additive functions. Brooks' result is extended to families of functions using a principle of uniform boundedness for group-valued additive functions.
TL;DR: A membrane filter method for the selective enumeration of blue-green bacteria has been developed which has proved to be both practical and reproducible.
Abstract: A membrane filter method for the selective enumeration of blue-green bacteria has been developed which, on the basis of studies with laboratory cultures and field tests, has proved to be both practical and reproducible. The filters are incubated under specified conditions of temperature and illumination on a mineral salts agar medium supplemented with yeast extract and containing cycloheximide to eliminate eukaryotic contaminants.
TL;DR: Pyruvate kinase, previously inactivated with trinitrobenzene sulfonate is incapable of catalyzing the formation of excess d -lactic acid during the reduction, and saturating amounts of ADP do not abolish stereoselective reduction.
TL;DR: In this article, the effect of pH on the chloroform extraction of the 4-heptanone oxime complex of palladium(II) chloride from aqueous-alcohol solution is presented.
Abstract: A study of the effect of pH on the chloroform extraction of the 4-heptanone oxime complex of palladium(II) chloride from aqueous-alcohol solution is presented. At least 99% of the palladium(II) taken is extracted into chloroform from 1M hydrochloric acid solution while iron(III) and nickel(II) are not extracted in macroscopic amounts under the same conditions.
TL;DR: In this article, the surface climate simulation strategy developed by Myrup and modified by Outcalt was employed in the analysis of evaporation in rough alpine tundra terrain at Chitistone Pass, Alaska (61N, 142W, 1773 m MSL).
Abstract: The surface climate simulation strategy developed by Myrup and modified by Outcalt was employed in the analysis of evaporation in rough alpine tundra terrain at Chitistone Pass, Alaska (61N, 142W, 1773 m MSL). The observations of evaporation for clear weather compare favorably with simulation estimates, especially for sites where water availability is not a limiting factor. Drier sites produce divergence between simulation and actual evaporation calculations. Further development is necessary to produce a working simulation model that incorporates both a water and heat budget synthesis for tundra terrain. However, with the employment of the equilibrium temperature model, the contrast of evaporation over tundra terrain appears to be predictable.
TL;DR: In this article, the authors compared the results obtained from Flugge's formulation with simplified formulations suggested by Donnell, Vlasov, and Schorer, and showed that the accuracy of the simplified formulations is limited for the case of shells supported along their four edges.
Abstract: Flugge's precise formulation for the linear theory of orthotropic cylindrical shell is represented together with the simplified formulations suggested by Donnell, Vlasov, and Schorer. The roots of the characteristic equation obtained for each of the simplified formulations are compared with those obtained from Flugge's formulation. This defines the ratio of length to radius of the shell for which the different approximation can be used without considerable error in the roots. The internal force components are also calculated showing that the accuracies of the approximate formulations are very limited for the case of shells supported along their four edges while better results are usually obtained in the case of shells with free longitudinal edges. The aforementioned study leads to alternative simplified formulation which improves the accuracy of the results without increasing the difficulty in obtaining a solution. Reliable analysis can be obtained using this proposed formulation.