Showing papers by "Stevens Institute of Technology published in 1978"
TL;DR: In this paper, a method of introducing a controlled degree of skew and kurtosis for Monte Carlo studies was derived, and the form of such a transformation on normal deviates [X ≈N(0, 1)] isY =a +bX +cX2 +dX3.
Abstract: A method of introducing a controlled degree of skew and kurtosis for Monte Carlo studies was derived. The form of such a transformation on normal deviates [X ≈N(0, 1)] isY =a +bX +cX
2 +dX
3. Analytic and empirical validation of the method is demonstrated.
673 citations
TL;DR: In this article, it was shown that the Orr-Sommerfeld equation, which governs the stability of any mean shear flow in an unbounded domain which approaches a constant velocity in the far field, has a continuous spectrum.
Abstract: It is shown that the Orr-Sommerfeld equation, which governs the stability of any mean shear flow in an unbounded domain which approaches a constant velocity in the far field, has a continuous spectrum. This result applies to both the temporal and the spatial stability problem. Formulae for the location of this continuum in the complex wave-speed plane are given. The temporal continuum eigenfunctions are calculated for two sample problems: the Blasius boundary layer and the two-dimensional laminar jet. The nature of the eigenfunctions, which are very different from the Tollmien-Schlichting waves, is discussed. Three mechanisms are proposed by which these continuum modes could cause transition in a shear flow while bypassing the usual linear Tollmien-Schlichting stage.
258 citations
TL;DR: In this paper, the authors developed a theory of error for target factor analysis, which predicts the magnitudes of these errors without requiring any a priori knowledge of the error in the data matrix or the target vector.
149 citations
TL;DR: In this article, the two digraphs, while different, usually represent the same phenomenon, say, the same computational process, and the unfolding (i.e., the trees) are surrogates for the phenomena.
121 citations
TL;DR: In this article, the authors developed an approximation to the conventional mixed linear-plus-quadratic ship roll damping model so that analytical obstacles could be overcome in the application of the functional series expansion to non-linear ship rolling.
Abstract: : The objective of the present work was to develop an approximation to the conventional mixed linear-plus-quadratic ship roll damping model so that analytical obstacles could be overcome in the application of the functional series expansion to non-linear ship rolling. A mixed linear-plus-cubic approximation was found to be reasonable for this purpose. In the course of analyses there were indications that this model may be more generally valid than had initially been thought. (Author)
104 citations
TL;DR: Two production models are presented for maintaining current control of an industrial process under the surveillance of an np-control chart.
Abstract: Two production models are presented for maintaining current control of an industrial process under the surveillance of an np-control chart. The formulated cost function includes the cost of maintaining an np-control chart, search for the assignable caus..
86 citations
TL;DR: Hough-like transforms may be used to detect curves in digital pictures using essentially parallel character of transforms and Elements of theory are presented for performance prediction together with simulated results.
70 citations
TL;DR: In this paper, the authors propose a residual finite hnn extension for non-terminating hnn extensions, which they call Residually Finite Hnn Extension (RHEN).
Abstract: (1978). Residually finite hnn extensions. Communications in Algebra: Vol. 6, No. 2, pp. 179-194.
64 citations
TL;DR: Greenhaus and Kovenklioglu as mentioned in this paper found that failure can be a learning experience only when one feels that the behavior can be changed and suggested that feedback may help the employee to change.
Abstract: Greenhaus, Jeffrey H.; Kovenklioglu, Grace Causal Attributions, Expectations and Task Performance. [76 ] 16p. MFO1 /PCO1 Plus Postage. *Attribution Theory; *Expectation; *Failure Factors; *Feedback; Higher Education; Males; *Self Esteem; *Success Factors; Task Performance -A group of 2-J3 male students in a freshman caemIstry class participated !_n thls r°: -asearch, which investigated the relationship between perik,rmance attributions and expectations and performance on a subsequent task. College students attributed their success or failure on two chemistry tests to ability, effort, luck, cr task difficulty, and indicated how well they expected to perform on a subsequent test. Among students who succeeded on the tests, expected and actual performance on the next test were positively related to ability attributions and negatively related to luck attributions. Among students who experienced failure, expected performance was negatively related to ability attributions and positively related to effort attributions. This suggests that failure can be a learning experience only when one feels that the behavior can be changed. Implications for job performance suggested that feedback may help the employee. (Author) *********************************************************************** Reproductions supplied by EDRS are the best that can be made from the original document. *********************************************************************** Causal Attributions, Expectations and Task Performance Jeffrey H. Greenhaus and Grace Kovenklioglu Stevens Institute of Technology PEff\IISSION TO REPRODUCE THIS 4.7.\ T MAL HAS BEEN GRANTED fiY (II: Cr' 1/1 ( 10 THE EDUCAT IONAL RESOURCES iNFORMA f ION CENTER IEPICI ANO '5H-Is THE EFIJI: SYSTEM U S OEPARTMENT OF HEALTH, EDUCATION i WELFARE NATIONAL INSTITUTE OF EDUCATION THIS DOCUMENT HAS BEEN REPRO. OuCEO EXACTLY AS RECEIVED FROM THE PERSON OR ORGANIZATION ORIGINATING IT POINTS OF VIEW OR OPINIONS STATED 00 NOT NECESSARILY REPRESENT OFFICIAL NATIONAL INSTITUTE OF EDUCATION POSITION OR POLICY Running head: Causal Attributions Causal Attributions, Expectations and Task Performance In a recent treatment of career development, Hen (1976) has proposed that goal attainment on a job can lead to feelings of psychological success which, in turn, raises self-esteem. Increments in self-esteem are presumed to lead to "...additional goal-directed behavior in that task area, often with an increased level of aspiration" (Hall, 1976, p. 125). The linkage of goal attainment to psychological success to self-esteem to higher aspirations seems to reflect an assumption that success breeds success. If organizations can simulate task success for its employees, high aspirations and fui:ther success may follow. Whether success always breeds success is an interesting empirical question. Recent research suggests that people attribute their success or failure experiences to different causes, and these causal attributions may affect a person's orientation toward success or failure in the future. Attribution research (Frieze, 1973; Rosenbaum, 1972; Weiner, Frieze, Kukla, Reed, Rest and Rosenbaum, 1971) has found that people tend to attribute their success or failure on a task to one or more of the following four causes: ability, effort, task difficulty, and luck. Weiner et al. (1971) have classified the causal attributions along two dimensions: locus of control and stability. The locus of control dimension reflects the distinction between internal (ability, effort and external (task difficulty, luck)attributions. In addition, ability and task difficulty are generally
55 citations
TL;DR: In this paper, a novel procedure is presented for the evaluation of kinetic parameters, activation energy (E ) and reaction order ( n ), from thermogravimetric (TG) traces, and the resulting arbitrary E -values may be plotted against respective n -values and the region bounded by intersecting curves used to simultaneously estimate E and n.
49 citations
TL;DR: In this paper, the performance characteristics of Hough-like transforms for curve detection are presented, including homogeneity and packing in parameter space, sensitivity, estimation, and determination of required low-level measurement accuracies subject to cost constraints, and changes of the coordinate system to improve performance.
TL;DR: Experiment and simple theory provide a description of the performance of planar gridded electrostatic particle analyzers in magnetoplasma.
Abstract: Experiment and simple theory provide a description of the performance of planar gridded electrostatic particle analyzers in magnetoplasma.
TL;DR: This article found that antecedent perceptions regarding organizational size (expectancy, valence, instrumentality) were significantly related to the relative attractiveness of different-sized organizations and the number of job interviews taken with relatively big and small companies.
TL;DR: The reaction of ν-ketoacids or νaldehydo acids with o-amino amides results in the formation of 4-quinazolones as mentioned in this paper.
TL;DR: The intrinsic viscosities, weight-average molecular weights (Mw), and radii of gyration of Streptococcus salivarius levan in various solvents were respectively obtained from viscosity and light-scattering measurements as mentioned in this paper.
TL;DR: In this article, a hydrodynamically equivalent linear model for dextran is proposed and it has been shown that this model correctly predicts values of Φ and K, Flory's universal hydrodynamic constant and the Flory-Fox-Schaefgen parameter, respectively.
Abstract: Small-angle x-ray scattering from solutions was applied in assessing branching using well-characterized dextran hydrolyzates. It was found that the longitudinal and cross-sectional properties of the polysaccharides vary in a manner predictable by the molecular topology of the chains. A hydrodynamically equivalent linear model for dextran is proposed and it has been shown that this model correctly predicts values of Φ and K, Flory's universal hydrodynamic constant and the Flory–Fox–Schaefgen parameter, respectively.
TL;DR: In this article, the authors investigated the relationship between self-esteem and job satisfaction among black and white employees in a large, urban school system, and found that there was a positive relationship between SE and overall job satisfaction for both groups.
TL;DR: In this paper, the authors describe the environmental engineering significance of stream self-purification, the current stream quality standards on dissolved oxygen concentration, and the solubility of dissolved oxygen in water.
TL;DR: The use of ammonia as reagent gas increases considerably the utility of chemical ionization mass spectroscopic (ci-ms) analysis: compounds of biological interest, such as steroid hormones, bile acids, prostaglandins, phospholipids, alkaloids, antibiotics, etc., display strong pseudomolecular ions.
TL;DR: In water and waste treatment, cationic polyelectrolytes can function as either primary coagulant or coagULant aid because they are positively charged as discussed by the authors.
Abstract: In water and waste treatment, cationic polyelectrolytes can function as either primary coagulant or coagulant aid because they are positively charged. It has been known that most of the colloidal and suspended impurities in natural water have negative surface charges. Cationic polyelectrolyte will neutralize the impurities or pollutants, then agglomerate them into larger masses for rapid solid-water separation by sedimentation, flotation, centrifugation, filtration, or reverse osmosis. Anionic polyelectrolyte are negatively charged and function as coagulants in water and waste treatment. They must be applied along with positively charged coagulants which neutralizes the negative charge on the colloidal and suspended impurities. In a water softening process, where precipitation particles are positively charged, however, anionic polyelectrolytes alone can coagulate. Nonionic organic polymers, however, can only function as coagulant aids which should be introduced at a point shortly after flocculation first occurs. Nonionic polymers will coat the existing floc particles so that when the flocs collide, they will adhere to one another, thus forming larger and heavier masses.
TL;DR: Evidence that the conditions downstream of an elastic constriction can strongly influence the frequency and existence of oscillations in collapsible tubes is presented and an extension of the existing theory which takes into account the influence of distributed loads on the collapsible tube.
Abstract: Evidence that the conditions downstream of an elastic constriction can strongly influence the frequency and existence of oscillations in collapsible tubes is presented. A lumped negative resistance model is used to describe oscillations in collapsible tubes. An extension of the existing theory is presented which takes into account the influence of distributed loads on the collapsible tube.
TL;DR: The indirect measurement of blood pressure in the pediatric population is often difficult or impossible to perform and when values are obtained, they are often unreliable or inaccurate.
TL;DR: In this paper, Drazin et al. showed that for the most important mode n = 1, for which the circular problem has a double eigenvalue c 0 as the swirl can be in either direction, the ellipticity always makes the flow less stable when the symmetry group of the dynamical system is reduced from S1 to Z2.
Abstract: In an earlier paper (Davey 1978) the first author investigated the linear stability of flow in a straight pipe whose cross-section was an ellipse, of small ellipticity e, by regarding the flow as a perturbation of Poiseuille flow in a circular pipe. That paper contained some serious errors which we correct herein. We show analytically that for the most important mode n = 1, for which the circular problem has a double eigenvalue c0 as the ‘swirl’ can be in either direction, the ellipticity splits the double eigenvalue into two separate eigenvalues c0 ± e2c12, to leading order, when the cross-sectional area of the pipe is kept fixed. The imaginary part of c12 is non-zero and so the ellipticity always makes the flow less stable. This specific problem is generic to a much wider class of fluid dynamical problems which are made less stable when the symmetry group of the dynamical system is reduced from S1 to Z2.In the Appendix, P. G. Drazin describes simply the qualitative structure of this problem, and other problems with the same symmetries, without technical detail.
TL;DR: In this article, the CEMS reflection spectra for bulk FeSi showed quadrupole splittings, ΔE S, larger by ∼ 0.04 mm sec −1 than ΔE B -the ones shown by transmission spectra.
TL;DR: In this article, a convenient synthesis of α-hydroxy-β-lactams has been devised that involves the annelation of an inline with benzyloxyacetyl chloride and triethylamine and subsequent hydrogenolysis in the presence of palladium on carbon.
TL;DR: In this paper, the authors examined room temperature void growth and intermetallic compound formation during interdiffusion in a thin film gold/lead diffusion couple by transmission electron microscopy and found that the extent of intermetall compound formation can be effectively reduced by the presence of a thin oxide layer grown on the lead film.
TL;DR: In this paper, the adsorption area of the Grafoil and the monolayer coverages were determined from observations of argon and 3He adsorment isotherms, and it was established that the residual (coverage-independent) linewidth is largely determined by spin-diffusion through local field gradients in voids in the GraFOil.
Abstract: Continuous-wave (cw) nuclear magnetic resonance measurements have been made at 5.5 MHz of 3He adsorbed on Grafoil and on argon (monolayer)-coated Grafoil at coverages x⩽ 0.40 (x = 1 corresponds to one monolayer), in the temperature range 0.35–4.21 K. To determine the fractional coverages, the adsorption area of the Grafoil and the monolayer coverages were determined from observations of argon and 3He adsorption isotherms. The results indicate that the adsorbed 3He is highly mobile and behaves as a two-dimensional nonideal Fermi gas. Relative magnetic susceptibilities determined from the NMR lines indicate that the onset of Fermi degeneracy is delayed by spin-independent 3He-3He interactions, as shown by the fit to the data of the quantum second virial coefficient expansion for the magnetic susceptibility. It is established that the residual (coverage-independent) linewidth is largely determined by spin-diffusion through local field gradients in voids in the Grafoil.
TL;DR: For ortho fractions X between 0.15 and 0.46 K, the linewidth transition at T < 0.5 K has been found to be independent of the thermal history of the sample.