Showing papers by "Florida Atlantic University published in 1980"
TL;DR: Ablation experiments show that input from the lateral filament, specifically the aesthetase tuft of theateral filament, is necessary and sufficient to trigger searching behaviour in this organism when stimulated with a gradient of dilute shrimp extract.
118 citations
TL;DR: In this paper, an extrinsic reward was found to decrease task satisfaction and persistence when a norm for no payment existed, but the inhibitory effect was not found when the norm for payment was associated with the task.
Abstract: Several previous studies have shown that rewarding individuals for preforming an interesting task may have an inhibitory effect on tast satisfaction and persistence. In this experiment, an extrinsic reward decreased task satisfaction and persistence when a norm for no payment existed, but the inhibitory effect was not found when a norm for payment was associated with the task. This result is discussed in terms of the “means-ends” theoretical perspective developed by Calder and Straw (1975b) as well as other dcompeting explanations.
86 citations
TL;DR: In this paper, the first use of synchrotron radiation for circular dichroism (CD) measurements was described and the measurements were carried out in the wavelength range 1325-2050 A on (+)-3-methylcyclopentanone at the Synchrotrom Radiation Center of the University of Wisconsin-Madison.
76 citations
TL;DR: In this paper, a generalization of the Routh method of reduction is introduced for obtaining stable reduced order models, which may be biased in the sense that they may approximate the initial transient response of the high order system more closely than the steady state response, and vice versa.
Abstract: A generalization of the Routh method of reduction is introduced for obtaining stable reduced order models. The reduced models may be ‘ biased ’ in the sense that they may approximate the initial transient response of the high order system more closely than the steady-state response, and vice-versa. Given the desired order of the reduced model, the method of this paper produces a number of stable reduced models which approximate the high order system. The method is easily extended to multi-variable systems. Examples are given to illustrate the method and to make comparisons with other methods of reduction.
40 citations
TL;DR: In this paper, the Routh-Hurwitz reduction method is shown to have a serious disadvantage in that the reduced model may approximate the nondominant poles of the system and hence lead to erroneous approximations.
Abstract: The Routh-Hurwitz reduction method is shown to have a serious disadvantage in that the reduced model may approximate the nondominant poles of the system and hence lead to erroneous approximations. A numerical example is given to compare the Routh-Hurwitz method to the Pade approximation method.
34 citations
TL;DR: The results of six experiments provided converging evidence that subjects abstracted a schematic representation of the spatial layout of the scene from the discrete, partially overlapping photographic samples presented during acquisition.
Abstract: Photographs of a downtown street scene were taken from four different locations. At each location the photographs were taken in 12 different directions, 30 deg apart. In the acquisition phase of the experiments, subjects learned to identify the photographs in terms of the location from which they were taken. The testing phase took place immediately after acquisition, after a 1-week delay, after a 6-month delay, and on one occasion after a 1-year delay. Subjects were tested for their ability to identify the camera location for previously seen and new photographs, to discriminate previously seen from new photographs f!.e., recognition), and to place the camera locations on a map of the street scene. The results of six experiments provided converging evidence that subjects abstracted a schematic representation of the spatial layout of the scene from the discrete, partially overlapping photographic samples presented during acquisition.
32 citations
TL;DR: The educational goals which adolescents form are one of the most important determinants of their future educational attainment as mentioned in this paper, and these goals seem to be most heavily influenced by the socioeconomic status of their parents and by parental encouragement of high achievement.
Abstract: The educational goals which adolescents form are one of the most important determinants of their future educational attainment. These goals. in turn. seem to be most heavily influenced by the socioeconomic status of their parents and by parental encouragement of high achievement (Alexander and Eckland. 1973). However. the process through which educational goals are formed seems to vary substantially by sex (Alexander and Eckland. 1974).
20 citations
TL;DR: In this article, the phase compensation conditions for non-inverting voltage controlled voltage source (VCVS) structures employing two operational amplifiers (op-amps) were compared. And the phase error, magnitude error, and realizable bandwidth were given.
Abstract: SUMMARY It is shown that the active compensated non-inverting voltage controlled voltage source (VCVS) structures employing two operational amplifiers (op-amps) may be classified into two major classes. Class 1, in which the phase compensation condition does not depend on the unity-gain bandwidth of the op-amps used, and class 2, in which the phase compensation condition depends on the unity-gain bandwidth of both op-amps. Detailed comparison tables which include the condition for phase compensation, the phase error, the magnitude error and the realizable bandwidth are given.
18 citations
TL;DR: In this paper, an algorithm for determining the location of the roots of a polynomial via the Routh table in the presence of purely imaginary roots and a left column zero is presented.
Abstract: An algorithmic procedure is given for determining the location of the roots of a polynomial via the Routh table in the presence of purely imaginary roots and a left column zero The algorithm is computationally attractive An example is given to illustrate the procedure
16 citations
14 citations
TL;DR: Stigma anatomy, pollen morphology, cotyledon structure and other traits suggest that two species formerly considered members ofMerremia fall outside an acceptable range of variation for that genus.
Abstract: Stigma anatomy, pollen morphology, cotyledon structure and other traits suggest that two species formerly considered members ofMerremia fall outside an acceptable range of variation for that genus. A new genus,Xenostegia, is proposed for these two species.
TL;DR: In this paper, a semi-analytical solution was presented to obtain the pressure distribution, the load capacity, the frictional moment and the lubricant flow rate for a laminar flow, hydrostatic bearing with its axis offset from the rotation axis of the saw blade.
TL;DR: A new variable phase inverting integrator is given that is suitable for phase correction in the two integrator 1 filters.
Abstract: A new variable phase inverting integrator is given. The proposed integrator is suitable for phase correction in the two integrator 1 filters.
TL;DR: Second-third and sixth grade children were presented with sets of categorically related pictures for free recall, but unexpectedly asked, just prior to recall, whether they had noticed in the set any 'groups, pictures that were alike or went together in some way' as discussed by the authors.
Abstract: Second-third and sixth grade children were presented with sets of categoricallyrelated pictures for free recall, but unexpectedly asked, just prior to recall, whether they had noticed in the set any 'groups, pictures that were alike or went together in some way'. Children's latencies to identify their first categories were recorded. Second-third grade children in a standard condition took significantly longer to identify their first categories than did second-third grade children who were prompted to identify categories at time of item presentation. There were no differences in latencies to identify categories between prompted and non-prompted subjects at the sixth grade level. Results were interpreted as reflecting developmental differences in the timing of organization in children's free recall.
TL;DR: The WISC-R had a facilitative effect on the WISC, and this effect did not appear when the order of administration was WISCWISC-WISCR as discussed by the authors.
TL;DR: A novel variable-phase inverting amplifier has an adjustable phase which depends on the unity-gain bandwidth of only one of the two o.a.s employed in the circuit.
Abstract: A novel variable-phase inverting amplifier is given. The proposed inverter has an adjustable phase which depends on the unity-gain bandwidth of only one of the two o.a.s employed in the circuit. Application of the inverter for phase correction in two-integrator loop filters is discussed.
TL;DR: In this article, a theoretical relationship between the instantaneous velocity, various static and dynamic soil properties, projectile characteristics, and instantaneous depth of penetration is established to establish the relationship between acceleration/deceleration, cone thrust, and sleeve friction.
Abstract: Momentum considerations are used to establish a theoretical relationship between the instantaneous velocity, various static and dynamic soil properties, projectile characteristics, and instantaneous depth of penetration. It is assumed that projectile penetration is associated with shear failure and the resistance to the motion of projectile is provided by the inertial resistance of the accelerated soil mass plus the dynamic soil resistive force distributed over the base and shaft of the projectile. The soil resistive force is calculated on the basis of plastic theory modified for dynamic conditions and extending the previous analysis. The theoretical relationships for the velocity profile, maximum depth of penetration, and the strength of the clay target are verified with laboratory tests performed under controlled conditions with a projectile instrumented to measure acceleration/deceleration, cone thrust, and sleeve friction simultaneously and continuously.
TL;DR: Freeman and Job (1979) attempt to provide formal mathematical distinctions between predictions and forecasts in international relations, but fail to clearly define “probability” in their models, which creates confusion regarding how, exactly, predictions are distinct from forecasts.
Abstract: Freeman and Job (1979) attempt to provide formal mathematical distinctions between predictions and forecasts in international relations. Serious problems exist, however, in their models. For example, they fail to clearly define “probability” in their models, which creates confusion regarding how, exactly, predictions are distinct from forecasts. Also, in their treatment of actual applications of the models, empirical generalizations are not clearly delineated from definitions and assumptions, further confusing their arguments. In general, no firm basis is given in the article to establish a probability value in their models that is distinct from the unscientific practice of “crystal ball gazing.”
01 Aug 1980
TL;DR: In this article, it was pointed out that an error exists in the circuit given in the above letter, and in correcting the circuit, it becomes identical to the general configuration previously described in the literature.
Abstract: It is pointed out that an error exists in the circuit given in the above letter [1]. In correcting the circuit, it becomes identical to the general configuration previously described in the literature [1]. The realization of a first-order all-pass transfer function should not be compared with that of a second-order all-pass based on the number of circuit components.
TL;DR: In this article, a review of organic geochemical investigations within the Deep Sea Drilling Program (DSDP) is presented, focusing on the source and maturation of organic matter present in deep sea sediments.
Abstract: Organic geochemistry has evolved within the Deep Sea Drilling Program (DSDP) from having little more than an ad hoc advisory function to its present state of a fully fledged international research program. On-board organic geochemistry has prima facie involvement with drilling safety decisions through continual monitoring of htdrocarbon accumulation, migration and generative potential. Areas of petroleum and hydrocarbon gas fields, if even suspected, must for the present be avoided, for reasons of safety and pollution until adequate technology enables probing such regions (e.g. continental margins and marginal basins). Investigations of organic diagenesis in marine sediments throughout the growing organic geochemistry regime within DSDP have resulted in a wealth of knowledge, oft times at the peripheries of petroleum genesis, which is not only useful at the present, but provides a solid base from which to launch future studies. Throughout the genesis of organic geochemistry, within DSDP, shore-based studies have resulted in the improvement and expansion of on-board analytical techniques and assessment of organic diagenesis and thermal profiling. Several on-shore laboratories have actively participated in the study of the organic constituents of DSDP core-samples since initiation of the project. These investigations are reviewed from an “area of interest” aspect and general results given as to source and maturation of the organic matter present in deep sea sediments. Applications to palaeoenvironment, thermal history, petrogenesis, and general sedimentology are considered. Taken as a whole, the results of organic geochemical investigations within the DSDP program yield much information on the transformation of organic matter in marine sedimentary environments and the overall flux of carbon through geologic time. Studies begun in the Eastern Pacific active margin and geothermal sites (Legs 63–69) and the impending return to the Atlantic (Legs 70–81), most notably the Cape and Angola Basins, with associated Cretaceous shales, afford an excellent continuation to these studies.
TL;DR: In this paper, a new active phase-compensated inverting amplifier is proposed, which employs two o.a.s and three resistors and has an infinite input impedance.
Abstract: A new active phase-compensated inverting amplifier is proposed. The amplifier circuit employs two o.a.s and three resistors and has an infinite input impedance. The proposed amplifier is also suitable for phase correction in two-integrator loop filters.
TL;DR: In this paper, a semi-analytical study of the influence of inertia terms on the thermohydrodynamic analysis of infinitely wide thrust bearings operating under conditions of laminar and turbulent flow is presented.
Abstract: This paper presents a semi-analytical study of the influence of inertia terms on the thermohydrodynamic analysis of infinitely-wide thrust bearings operating under conditions of laminar and turbulent flow. The momentum and energy equations are not seriously affected by the presence of inertia forces. Results show that the inclusion of inertia terms causes an increase in the fluid film pressure and load-carrying capacity. Thermal effects exert a pronounced influence on bearing performance.
TL;DR: In this article, an invariant measure which is continuous with respect to Lebesgue measure is constructed for a particular first order difference equation that has an extensive biological pedigree, which gives the density of the population whose growth is governed by the difference equation.
Abstract: An invariant measure which is absolutely continuous with respect to Lebesgue measure is constructed for a particular first order difference equation that has an extensive biological pedigree. In a biological context this invariant measure gives the density of the population whose growth is governed by the difference equation. Further asymptotically universal results are obtained for a class of difference equations.
TL;DR: In this article, the authors organize the findings of relevant research related to procedures for changing attitudes and emotions that have potential for classroom use, and present a set of procedures for teaching children appropriate attitudes.
Abstract: Research has shown that the attitudes and emotions of children can be modified. However, little has been done to incorporate into schools organized and structured procedures for teaching children appropriate attitudes and emotions. The purpose of this article is to organize the findings of relevant research related to procedures for changing attitudes and emotions that have potential for classroom use.
TL;DR: The hypothesis is that citrus fruit consumption is the prime factor which can account for these low risk regions, and Florida, which has a large immigrating population from the high risk north-eastern United States, provides an excellent model for metabolic-epidemiological studies of an area at low risk for colon cancer.
TL;DR: For example, this article showed that giving children an extrinsic reward for not deviating would prevent them from devaluing the forbidden activity, because it would provide an alternative external locus to which they could attribute their avoidance.
Abstract: Children who resist temptation under a mild threat of punishment for deviation subsequently devalue the forbidden activity, whereas those who resist under a severe threat do not. According to self-perception theory, mild-threat children attribute their avoidance of the activity to a lack of interest in it, whereas severe-threat subjects attribute their avoidance to the threat. A first study tested the hypothesis that promising children an extrinsic reward for not deviating would prevent them from devaluing under mild threat, because it would provide an alternative external locus to which they could attribute their avoidance. This was supported. A second study demonstrated, however, that giving subjects an expectation of reward that was not contingent on avoiding the forbidden activity also prevented devaluation under mild threat. This latter result, plus the finding in both studies that promising a reward under severe threat caused children to devalue the forbidden activity, disconfirmed the self...
TL;DR: In this paper, an economical non-inverting voltage-controlled voltage source (VCVS) which employs only two operational amplifiers and two resistors is given, which has a larger bandwidth than that obtained using the uncompensated the Reddy (1976) and the Geiger (1977) VCVS structures.
Abstract: An economical non-inverting voltage-controlled voltage source (VCVS) which employs only two operational amplifiers and two resistors is given. The proposed amplifier has a larger bandwidth than that obtained using the uncompensated the Reddy (1976) and the Geiger (1977) VCVS structures. Stability analysis based on the two pole model of the operational amplifier is given.
TL;DR: In this article, an approximate series solution for the response of damped, linear, time-invariant systems to sinusoidal inputs with slowly varying frequency is presented, expressed in terms of the time dependent frequency and its time derivatives and the system transfer function and its derivatives with respect to frequency.