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Showing papers by "Oklahoma State University–Stillwater published in 1976"


Journal ArticleDOI
TL;DR: The stability measure developed in this paper is applied to two example systems and shows the ability of an ecosystem to resist changes in the presence of perturbations.

221 citations


Journal ArticleDOI
TL;DR: The hypothesis that personal space invasions produce arousal was investigated in a field experiment in a men's lavatory provided a setting where norms for privacy were salient, where personal space invasion could occur in the case of men urinating, where the opportunity for compensatory responses to invasion were minimal, and where proximityinduced arousal could be measured.
Abstract: The hypothesis that personal space invasions produce arousal was investigated in a field experiment. A men's lavatory provided a setting where norms for privacy were salient, where personal space invasions could occur in the case of men urinating, where the opportunity for compensatory responses to invasion were minimal, and where proximity-induced arousal could be measured. Research on micturation indicates that social stressors inhibit relaxation of the external urethral sphincter, which would delay the onset of micturation, and that they increase intravesical pressure, which would shorten the duration of micturation once begun, Sixty lavatory users were randomly assigned to one of three levels of interpersonal distance and their micturation times were recorded. In a three-urinal lavatory, a confederate stood immediately adjacent to a subject, one urinal removed, or was absent. Paralleling the results of a correlational pilot study, close interpersonal distances increased the delay of onset and decreased the persistence of micturation. These findings provide objective evidence that personal space invasions produce physiological changes associated with arousal.

111 citations


Book ChapterDOI
01 Jan 1976
TL;DR: In this paper, the authors describe the dynamics of a molecular scattering process in exact terms by the solutions to the Schrodinger equation in which the kinetic energy and the electrodynamical interactions of all the nuclei and electrons of the colliding partners are used.
Abstract: The dynamics of a molecular scattering process is described in exact terms by the solutions to the Schrodinger equation in which the kinetic energy and the electrodynamical interactions of all the nuclei and electrons of the colliding partners are used. If the process to be studied can be assumed to be adiabatic, the Born-Oppenheimer separation can be invoked, and the Schrodinger equation for the scattering is reduced to the problem of nuclear motion on a potential energy surface known as a function of all the internuclear distances. The accuracy of quantum mechanical calculations of the measurable attributes of molecular collisions is limited only by the accuracy of the potential energy surface and by the number of basis functions that can be afforded in terms of computer core storage size and processing time. The technical and economic questions are therefore 1 How accurate must a calculation be in order to test predictions of a given theory against a given experimental result, and how is this accuracy most efficiently achieved? 2 What calculational expense is commensurate with the scientific value of the result?

105 citations


Journal ArticleDOI
TL;DR: The Personal Attribute Inventory (PAI) as mentioned in this paper is a scale that should prove applicable to a broad range of interpersonal assessments and is used to measure the personal attributes of individuals.
Abstract: The Personal Attribute Inventory is a scale that should prove applicable to a broad range of interpersonal assessments. There are 50 positive and 50 negative adjectives from Gough's (1952) Adjectiv...

69 citations



Journal ArticleDOI
TL;DR: In this article, a method is developed whereby the statistical characteristics of the response of non-linear stochastic systems are calculated with good accuracy based on the theory of Markov processes.
Abstract: In this paper a method is developed whereby the statistical characteristics of the response of non-linear stochastic systems are calculated with good accuracy. The method consists of the formulation and solution of the differential equations for the statistical characteristics of the processes under consideration. The development is based on the theory of Markov processes. In particular, use is made of Ito's differential rule to obtain a basic result which is used for the formulation of the differential equations. For the solution of the differential equations the method employs an approximate analytic representation of the probability density function of a random process. The representation is in the form of a finite Edgeworth (asymptotic) expansion. The method is quite general and yields accurate results. The treatment is illustrated by examples.

64 citations


Journal ArticleDOI
TL;DR: A mitochondrial short chain acyl-CoA hydrolase, purified 1375-fold from rat brain, has a molecular weight of approximately 1.55 × 105 and is product activated by acetate and inhibited by DL-lipoic acid and 0.1 M orthophosphate.

59 citations


Journal ArticleDOI
TL;DR: The mouth is confirmed as the site of water vapor uptake in the lone star tick, Amblyomma americanum, and it was shown that the level of chloride increased in the mouthparts of desiccated ticks.

58 citations


Journal ArticleDOI
TL;DR: In this article, the authors use concepts such as the payback period, average rate of return, internal RROI, and net present value to evaluate alternative investment alternatives to the assumption of perfect knowledge.
Abstract: Managers of business firms, large or small, farm or nonfarm, must make investment decisions under conditions of risk and uncertainty. However, in evaluating investments, the assumption of perfect knowledge has often been used to simplify the analysis. For example, an estimate of average annual net returns is frequently discounted into perpetuity to evaluate a real estate investment alternative. Capital budgeting literature suggests a number of approaches to evaluating alternative investments. However, use of concepts such as the payback period, average rate of return, internal rate of return and net present value embodies the assumption of perfect knowledge.

55 citations


Journal ArticleDOI
TL;DR: Two toxins have been purified to electrophoretic homogeneity from an extract of the venom apparatus of the brown recluse spider, Loxosceles reclusa, andAntisera to toxin 1 is effective in protection of mice against the toxin effect of the extract, but none of the antisera has been effective in reducing lesion size in rabbits.

54 citations


Journal ArticleDOI
TL;DR: In this paper, the potential energy surface was obtained by employing 2D cubic spline interpolation of previously reported ab initio SCF results, and the calculated reaction probabilities were found to be significantly increased whenever the total energy is selectively partitioned into H+2 vibration.
Abstract: The reaction probabilities for He+H+2(v=0,1,2,3) →HeH++H have been computed as a function of total energy using quasiclassical trajectory procedures. The potential‐energy surface was obtained by employing 2D cubic spline interpolation of previously reported ab initio SCF results. The calculated reaction probabilities are found to be significantly increased whenever the total energy is selectively partitioned into H+2 vibration. These results are in accord with previously reported experimental findings but are in contrast to previous quantum mechanical calculations on a DIM analytic fit to the ab initio surface points. It is shown that this discrepancy is a result of small differences between the splinefitted and DIM surfaces and not to either the collinear nature of the computations or the differences between quantum and quasiclassical procedures.

Journal ArticleDOI
TL;DR: In this paper, an ecological model of interurban crime is presented, which emphasizes geographic context and is based on more cities (726) than any previous study, in which five measures of serious crime and 25 socioeconomic variables, chosen on the basis of their theoretical relationship to crime, are correlated using canonical analysis.
Abstract: An ecological model of interurban crime draws on numerous examples to illustrate the computed relationships. The model is unique in that it emphasizes geographic context and is based on more cities (726) than any previous study. Five measures of serious crime and 25 socio-economic variables, chosen on the basis of their theoretical relationship to crime, are correlated using canonical analysis Variables representing black population characteristics, residential stability, economic status, and age of the population are prominent among clusters of predictors that relate significantly to the crime parameters. The results confirm and extend prior findings at the interurban level.

Journal ArticleDOI
01 Feb 1976-Nature
TL;DR: In this article, a simple Devonian palaeographical model of the Orcadian Basin based on observation of onshore sediments is presented, which is compatible with only minor dextral displacement along the Great Glen Fault in post-Devonian times.
Abstract: STORETVEDT1 has argued that Devonian palaeomagnetic results from Norway and northern Scotland indicate a post-Devonian sinistral displacement along the Great Glen Fault of some 200–300 km. This has been objected to on geological grounds by Mykura2 and on palaeomagnetic grounds by Turner et al.3. Here we present a simplistic Devonian palaeographical model of the Orcadian Basin based on observation of onshore sediments. We believe the model is compatible with only minor dextral displacement along the Great Glen Fault in post-Devonian times.

Journal ArticleDOI
TL;DR: The role of ethyl alcohol as a significant factor in traffic arrests and accidents has been established through numerous studies, while that of other drugs and their incidence in the driving population is less clear.
Abstract: The role of ethyl alcohol as a significant factor in traffic arrests and accidents has been established through numerous studies [1], while that of other drugs and their incidence in the driving population is less clear. Several studies have, however, demonstrated a high incidence of drugs in “intoxicated drivers” by questioning or urine analysis [2–4]. Finkle et al [3] reported 21% of arrested, drinking drivers indicated on routine questioning some kind of concurrent drug use.


Journal ArticleDOI
TL;DR: In this article, the authors discuss testing hypotheses and interval estimation for the mean of the first passage time distribution in Brownian motion with positive drift (inverse Gaussian distribution) and derive the optimum test procedures and confidence intervals for both one-sided and two-sided cases.
Abstract: In this paper we discuss testing hypotheses and interval estimation for the mean of the first passage time distribution in Brownian motion with positive drift (inverse Gaussian distribution). Optimum test procedures and confidence intervals for both one-sided and two-sided cases are derived in their exact forms, which utilize the percentage points of standard normal and Student's t distributions. In thecase of an hypothesis with a two-sided alternative, it is shown that a uniformly most powerful (UMP) unbiased test is simply a two-tailed normal test if the nuisance parameter is known, and a two-tailed Student's t test if it is unknown.

Journal ArticleDOI
TL;DR: The total syntheses of a series of vicinal-substituted dimethoxy and dihydroxy heterosteroids of the equilenin type and model analogs are described and a novel class of pyrazolo steroidal N-glucosides has been synthesized.
Abstract: The total syntheses of a series of vicinal-substituted dimethoxy and dihydroxy heterosteroids of the equilenin type and model analogs are described. A novel class of pyrazolo steroidal N-glucosides has also been synthesized. Compounds prepared were screened in vitro for growth inhibition of different microorganisms. Of these, 1-alpha-d-glucopyranosyl-4,5-dihydro-7-methyoxy-1H-benz[g]indazole tetraacetate (3) was quite active. For example, N-glucoside 13 inhibited the growth of Bacillus subtilis, Pseudomonas fluorescens, Staphylococcus aureus, and KB cells at moderate concentrations.

Journal ArticleDOI
TL;DR: In this article, the authors proposed a hypothesis to explain how the alkaloid biosynthesis may occur from amino acids in a nitrogen rich and a nitrogen poor plant and this also explains why and how that certain amino acids can be prevented from becoming toxic to the plant by synthesizing a secondary metabolite such as an alkalinoid.

Journal ArticleDOI
TL;DR: In this paper, the authors analyzed the bias of an ensemble of individual realization laser Doppler anemometer data caused by both spatial and temporal variation of the velocity in the probe volume.
Abstract: The biasing of an ensemble of individual realization laser Doppler anemometer data caused by both spatial and temporal variation of the velocity in the probe volume has been analyzed. The analysis shows that the timeand space-average velocity through the probe volume can be calculated with a weighted ensemble of data. Likewise, the root-mean-square velocity in the probe volume can also be calculated with a weighted average. However, the velocity variance in the data ensemble originates from three sources: velocity fluctuations caused by turbulence at the center of the probe volume; spatial variations in the mean velocity across the probe volume; and spatial variations in velocity fluctuations across the probe volume. Since the root-mean-square velocity at the center of probe volume is generally the parameter of interest, the other two sources of velocity variance must be subtracted from the measured value. The results of the analysis are used to reduce LDA data taken in the viscous sublayer of a channel flow of water. Without correction, the mean velocity estimates can be as much as 109/o too high while the root-mean-square estimates are as much as 100% high. The proposed correction techniques brings the LDA data into good agreement with previous hot-film data.



Journal ArticleDOI
TL;DR: In this article, the authors report the results of a longitudinal analysis of the path-goal theory of leader effectiveness (House 1971), using a sample of managers and production workers from a single organization.

Journal ArticleDOI
TL;DR: The results suggest that Con A inactivates the 5'-nucleotidase by a direct interaction with the enzyme and that this enzyme is a Con A receptor site on the surface of mammary cells.
Abstract: The plant lectin concanavalin A (Con A) specifically inactivates the 5′ -nucleotidase of a plasma membrane-enriched fraction from lactating mammary gland. The lectin also causes an activation of the membrane Mg++ -ATPase, but does not affect galactosyltransferase or alkaline phosphatase. The enzyme perturbations are prevented by α-methylmannoside, an inhibitor of Con A binding, indicating that specific binding to carbohydrate structures rather than nonspecific protein-protein interaction is involved. Solubilization of the 5′ -nucleotidase in detergents (0.2% Triton X-100 or 1% deoxycholate) does not prevent Con A inactivation, indicating that incorporation into the membrane structure is not a requirement for the Con A effect. The results suggest that Con A inactivates the 5′ -nucleotidase by a direct interaction with the enzyme and that this enzyme is a Con A receptor site on the surface of mammary cells.

Journal ArticleDOI
TL;DR: Differences between chicks of the Obese strain and those of the parent strain have been investigated and a difference in the plasma growth hormone concentration was found in the 4-week-old birds.


Journal ArticleDOI
TL;DR: The relationship between career maturity and self-concepts of sixth-grade black males was investigated in this paper, where the Attitude Scale of the Career Maturity Inventory and the Coopersmith Self-Esteem Inventory were used to assess the association of career maturity.

Journal ArticleDOI
TL;DR: In this article, a firm-level bioeconomic simulation model capable of stochastically determining yields for the major dryland and irrigated crops in the central basin of the Ogallala Formation as a function of soil moisture and atmospheric stress during critical stages of plant development was developed.
Abstract: This study develops a firm-level bioeconomic simulation model capable of stochastically determining yields for the major dryland and irrigated crops in the central basin of the Ogallala Formation as a function of soil moisture and atmospheric stress during critical stages of plant development. The model is used to evaluate three methods of regulating groundwater irrigation—no restriction, a quantity limitation, and a graduated tax per unit above the quantity limitation. Results differ for poor and adequate water situations but indicate the potential value of an educational program on timing of irrigation application to maximize net farm income.

Journal ArticleDOI
TL;DR: In this paper, the authors describe the microbiology of the activated-sludge process and present a review of the literature on activated sludge processes, focusing on the following topics:
Abstract: (1976). The microbiology of the activated‐sludge process. C R C Critical Reviews in Environmental Control: Vol. 6, No. 3, pp. 233-257.

Journal ArticleDOI
TL;DR: Sarcoma-180 tumor cells in culture or grown as an ascites form in the CD-1 mouse have been subjected to mild trypsinization procedures in order to study morphological and molecular changes resulting from proteolysis and offer circumstanital evidence for transmembrane interactions of surface glycoproteins with the high molecular weight polypeptides as a factor in controlling cell morphology.

Journal ArticleDOI
TL;DR: In this paper, a tentative identification of the absorption and emission bands associated with these defects suggests the following optical bands occur when the defects designated below are present: (a) [$X_{2}^{}{}_{}{}^{\ensuremath{-}}$] (${V}_{k}$) centers\char22{}330-nm absorption and 428-nm emission, (b) $F$ centers \char22
Abstract: Radiation-induced defects in RbMg${\mathrm{F}}_{3}$ have been studied by optical techniques. A tentative identification of the absorption and emission bands associated with these defects suggests the following optical bands occur when the defects designated below are present: (a) [$X_{2}^{}{}_{}{}^{\ensuremath{-}}$] (${V}_{k}$) centers\char22{}330-nm absorption and 428-nm emission, (b) $F$ centers\char22{}295- and 325-nm absorption (depends on crystal orientation), (c) ${F}_{3}$ centers\char22{}387-, 285-, and 230-nm absorption; 430-nm emission, and (d) ${F}_{3}$ centers\char22{}300-nm absorption; and 330- and 490-nm emission. The temperature dependence of the production and annihilation of these defects is also investigated.