Showing papers by "University of Colorado Colorado Springs published in 1977"
TL;DR: It is demonstrated that vasopressin can affect the behavior of rats on a positively-reinforced task and prolonged extinction was not found in animals which received vasoppresson only during acquisition or in control animals whichreceived saline.
65 citations
TL;DR: It is found that belief in external control by chance, rather than control by powerful others or internal control, appears to be associated with unfavorable treatment outcome in male alcoholics receiving inpatient and outpatient therapy.
Abstract: Belief in external control by chance, rather than control by powerful others or internal control, appears to be associated with unfavorable treatment outcome in male alcoholics receiving inpatient and outpatient therapy.
36 citations
TL;DR: In this article, a tutorial review of the basis for transmitter noise measurements shows that noise is best described and measured as AM and FM noise, and the contribution of AM noise to RF spectrum shape is determined by the power spectral density shape of the AM noise.
Abstract: A tutorial review of the basis for transmitter noise measurements shows that noise is best described and measured as AM and FM noise. The determination of RF spectrum is done by calculation after the AM and FM noise are known. The contribution of AM noise to RF spectrum shape is determined by the power spectral density shape of the AM noise. The contribution of FM noise to RF spectrum is to make the shape that of an RLC circuit resonant response rather than a delta function with a sideband structure. The measurement of AM noise is done with a direct detector diode. The measurement of FM noise for frequencies above 5 GHz is done with a discriminator based on a one-port cavity resonator. The measurement of FM noise below 5 GHz is done with an improved transmission line discriminator which is described in detail. Measurement of low-power low-noise signal sources is made posbible with an injection-locked oscillator for a preamplifier to the discriminator. The most widely used baseband analyzer is the constant bandwidth superhetdrodyne wave or spectrum analyzer. Most differences in measurement results are resolved by understanding the baseband analyzers. At least the baseband spectrum analysis of transmitter noise measurements can be automated with worthwhile savings in time and improvement of documentation.
36 citations
33 citations
Journal Article•
26 citations
Patent•
25 Jul 1977TL;DR: In this paper, a single pivot connection for a legrest of a vehicle seat and the like includes a shaft extending from a bracket attached to the seat and an arm bracket attached on the legrest and pivotally supported upon the shaft.
Abstract: A single pivot connection for a legrest of a vehicle seat and the like includes a shaft extending from a bracket attached to the seat and an arm bracket attached to the legrest and pivotally supported upon the shaft. The arm bracket has a cylindrical portion and there is a hub on the end of the cylindrical portion with a circumferentially extending notch therein which receives a key formed in an annular member rotatably positioned upon the hub. A gear mounted on the shaft is engageable with a pawl and there is a braking disc between the end of the cylindrical portion and gear such that the application of a predetermined force on the legrest will pivot the legrest with respect to the seat. The pawl engages the gear as the legrest pivots to a horizontal position and pivoting beyond the horizontal to the vertical up position causes cam surfaces on the annular member to disengage the pawl from the gear so that the legrest is free for pivotal movement.
21 citations
TL;DR: Repletes of the honey ant vary in color from clear to a very dark amber, but the clear and light amber ones are few, and analysis of crop fluid from dark amber and clear repletes demonstrated that the dark nectar contained more dissolved solids and that they were mainly glucose and fructose.
Abstract: Repletes of the honey ant vary in color from clear to a very dark amber, but the clear and light amber ones are few (ca. 4%) in number. An analysis of crop fluid from dark amber and clear repletes demonstrated that the dark nectar contained more dissolved solids and that they were mainly glucose and fructose. In the more dilute clear sample, sucrose made up the bulk of the solids and there were only traces of glucose and fructose. Clear repletes may function primarily as water-storage vesicles, an adaptation well-suited to their semi-arid habitat.
21 citations
TL;DR: A simple and rapid heed space mess spectrometric screening technique for volatlles in blood and post-mortem tissues is described in this paper, where the presence of the volatile anesthetic agents, nitrous oxide, halothane (Fluothane) and enflurane (Ethrane), in the blood of surgical patients is demonstrated.
Abstract: A simple and rapid heed space mess spectrometric screening technique for volatlles in blood and post-mortem tissues Is described. Mass spectral data on specimens trom acute toxicities due to fluorocarbons (Freens), methane, diethylether, and toluene are presented. The presence of the volatile anesthetic agents, nitrous oxide, halothane (Fluothane) and enflurane (Ethrane), in the blood of surgical patients is demonstrated. Xylene, toluene, CCl4, CHCl3, acetonitrlle, and methylethylketone In blood-enriched specimens also exhibit characteristic mass spectra. The detection limit for this technique Is approximately 1/~g / ml.
15 citations
Patent•
17 Oct 1977TL;DR: In this article, an electro-hydraulic actuator acting through a lever and a rod was used to control the induced draft of a rotating drum drier, through which the material being dried is moved primarily by the heated gases, is compared with the pressure of gases discharging from the drum.
Abstract: The pressure of heated gases supplied by a furnace to an induced draft, rotating drum drier, through which the material being dried is moved primarily by the heated gases, is compared with the pressure of gases discharging from the drum, and the differential between these pressures is used in controlling the induced draft of the drum by decreasing the draft upon an increase in differential pressure and increasing the draft upon a decrease in differential pressure. The differential in pressure may be maintained at a value on the order of 1.2 to 1.6 inches H 2 O, depending on the installation. The induced draft may be controlled at a damper between a discharge chamber for the furnace and an induced draft fan, through an electro-hydraulic actuator acting through a lever and a rod, the lever being manually settable when automatic operation is not used. The signal for the actuator is produced by a load responsive control device to which a signal, corresponding to the differential pressure, is supplied from a pressure responsive transmitter, to which is connected both a pressure pipe extending from the furnace and a pressure pipe extending from the drum discharge chamber. The furnace pressure is also fed to an additional pressure responsive transmitter, for producing a signal proportional to the furnace pressure for transmittal to an override control device, which compares the signal with a preselected minimum furnace pressure.
10 citations
01 Apr 1977
TL;DR: In this article, a simple FM noise measurement technique for signal sources operating below 5 GHz is proposed. But the technique is not suitable for all sources and the proposed method requires the use of an improved transmission line discriminator which has good immunity to incidental AM.
Abstract: There is a need for a simple FM noise measurement technique for signal sources operating below 5 GHz. Improved transmission line discriminators are described which have good immunity to incidental AM on the test signal and have adequate threshold. Operating procedures and experiences are discussed.
9 citations
TL;DR: The moderate increase in circulating FFA following ingestion of a commercially available cola (22 to 35 mg caffeine/bottle) is similar to the change seen in resting, nonfed subjects.
Abstract: On four separate occasions resting, fasted adults ingested 10 oz of a cola-flavored soft drink containing either 0, 22.5, 35, or 150 mg caffeine. Heart rate, blood pressure, and plasma free fatty acid (FFA) and glucose values were obtained before and at 15, 30, 60, 90, 120, 180 and 360 min after the feeding. All urine was collected during the 6 hr following ingestion and was later assayed for total catecholamine (CA) content. Urine volume and total CA excretion increased as the amount of caffeine ingested increased. Only the 150 mg solution resulted in significant increases (over control) in 6 hr CA output, or FFA concentration and mean arterial pressure early after the feeding. The 150 mg drink also maintained blood glucose at pre–ingestion levels for the entire course of the experiment. The moderate increase in circulating FFA following ingestion of a commercially available cola (22 to 35 mg caffeine/bottle) is similar to the change seen in resting, nonfed subjects. These data suggest that inge...
TL;DR: In this article, the results of bulk chemical analyses and mineralogical and petrographic studies of a chondrite found at Kramer Creek, Colorado, were reported, and the meteorite was classified as an L-group chondite on the basis of its bulk chemistry, the fayalite content of its olivine (21.7%), and the ferrosilicate content of pyroxene (18.3%).
Abstract: Results of bulk chemical analyses and mineralogical and petrographic studies of a chondrite found at Kramer Creek, Colorado, are reported. The meteorite has been classified as an L-group chondrite on the basis of its bulk chemistry, the fayalite content of its olivine (21.7%) and the ferrosilicate content of its pyroxene (18.3%). The presence of interstitial glass and the iron oxide percent mean deviations for olivine and low-Ca pyroxene (2.4 and 4.6%) place the specimen in petrologic group 4 of the Van Schmus and Wood classification (1967)
TL;DR: Though first drinking experiences were found to be very similar for males and females, females reported a significantly longer period of time between their first and second drinks of an alcoholic beverage.
Abstract: The authors predicted that sex roles in America would contribute to variation between male and female alcoholics in fust drinking experiences and current drinking patterns. Moderate support for this hypothesis was observed. Though first drinking experiences were found to be very similar for males and females, females reported a significantly longer period of time between their first and second drinks of an alcoholic beverage. Females were significantly more likely to have consumed their first alcoholic beverage with family members, while males more commonly were with friends. Beer was the most frequently consumed beverage on the first drinking occasion for both sexes; the second most popular beverage among men was whiskey, while women chose mixed drinks.Regarding current drinking patterns, men drank significantly more often than women. The differences pertaining to general drinking pattern (drinking daily, several times a week, or on weekends, or engaging in binge drinking) approached significance.
TL;DR: In this paper, an analysis of utility maximizing behavior in the choice of city size suggests that an increase in such economies may be the cause of outmigration from large cities, and that, in any event, increases in incomes across all cities should, ceteris paribus, induce such out-migration.
Abstract: Recent declines in the populations of some major metropolitan regions may not be inconsistent with the notion of agglomeration economies. An analysis of utility maximizing behavior in the choice of city size suggests that an increase in such economies may be the cause of outmigration from large cities, and that, in any event, increases in incomes across all cities should, ceteris paribus, induce such outmigration.
TL;DR: The technique presented here provides greater specificity than previously reported analytical procedures for the identification of these volatile toxic chemical compounds in biological specimens.
Abstract: Freons from an aerosol spray can were detected in the blood, liver, brain, and lung of a 14-year-old girl who died after intentional inhalation. A headspace mass spectrometric analytical technique was employed to detect the fluorocarbons. The spectra from the specimens showed the presence of m/e peaks at 101, 103, and 105 from the ion (CFCL2)+ which arises from fragmentation of trichlorofluoromethane (Freon 11) and dichlorodifluoromethane (Freon 12), and peaks at 85 and 87 from the ion (CF2Cl)+ which arises from fragmentation of dichlorodifluoromethane (Freon 12). The technique presented here provides greater specificity than previously reported analytical procedures for the identification of these volatile toxic chemical compounds in biological specimens.
TL;DR: In this article, the effect of nuclear beta decay electrons upon orbiting spacecraft potentials was analyzed and the maximum spacecraft potential of hundreds of kilovolts was predicted, depending upon orbit altitude, spacecraft configuration, ambient plasma conditions, and the peak flux of nuclear β decay electrons generated immediately after a detonation.
Abstract: The effect of nuclear beta decay electrons upon orbiting spacecraft potentials is analyzed. Maximum spacecraft potentials of hundreds of kilovolts are predicted. Charging effects are shown to depend upon orbit altitude, spacecraft configuration, ambient plasma conditions, and the peak flux of nuclear beta decay electrons generated immediately after a detonation.
TL;DR: A stochastic model of the right- turn-on-red (RTOR) policy for a high-density urban area consisting of one-way streets is outlined and specific recommendations on when to use RTOR are developed for typical urban conditions.
Abstract: This paper outlines a stochastic model of the right-turn-on-red (RTOR) policy for a high-density urban area consisting of one-way streets. This model is used to investigate the effects of (1) cross-street traffic volume, (2) right-turn lane traffic volume, (3) pedestrian arrival rate, and (4) balking rate for right-turning vehicles. The model provides the methodology for studying the RTOR maneuver under various conditions. Specific recommendations on when to use RTOR are developed for typical urban conditions. Language: en
TL;DR: En bloc composite cancer surgery for head and neck tumors is now available with reconstruction with pre‐irradiation tattooing at resection margins to preserve fundamental surgical doctrine.
Abstract: En bloc composite cancer surgery for head and neck tumors is now available with reconstruction. Pre-operative adjuvant therapy threatens the concept of wide resection because of alteration of tumor margins. Pre-irradiation tattooing at resection margins will preserve this fundamental surgical doctrine.
01 May 1977
TL;DR: The answers to questions 2, 4, 5, and 6 are negative and questions 7, 8, and 10 can have positive answers.
Abstract: Ten questions are posed and answered. 1. What is a large public space? 2. Are currently installed systems intelligible? 3. Why are multiple location loudspeakers not intelligible? 4. Are twin columns intelligible? 5. Can electrical delay devices help? 6. Can electrical equalization of frequency response improve intelligibility? 7. Can speech reinforcement be intelligible in a concert hall? 8. Can speech reinforcement be intelligible in a sporting arena? 9. Can pubs lic address systems be intelligible in airports? 10. Can sound reinforcement be intelligible in a church? The answers to questions 2, 4, 5, and 6 are negative. Questions 7, 8, and 10 can have positive answers.
TL;DR: It was concluded that elevation of blood-O2-tension in this study did not affect diving bradycardia and relatively constant CO2 and pH was attributed to anerobiasis and blood-buffering-capacity.
01 Jan 1977
TL;DR: In this article, the majority of crewmembers who exhibited postflight decreases in the cardiac silhouette size also showed a decreased orthostatic tolerance to lower body negative pressure, and physiological factors possibly involved in cardiac silhouette changes are discussed.
Abstract: The majority of crewmembers who exhibited postflight decreases in the cardiac silhouette size also showed a decreased orthostatic tolerance to lower body negative pressure. Similar findings were also reported by the Soviet investigators following 30-day bedrest studies and in cosmonauts upon return from space missions. Further radiological data from all three Skylab manned missions are presented and the physiological factors possibly involved in the cardiac silhouette changes are discussed.
TL;DR: In this article, a simple design procedure based on Gilbert's decoupling parameters is presented for perfect scaler decoupled via state feedback of a linear time-invariant system with parameter uncertainties defined over a discrete set of possible values.
Abstract: A simple design procedure is presented, based on Gilbert's decoupling parameters [1]-[2] for perfect scaler decoupling via state feedback of a linear time-invariant system with parameter uncertainties defined over a discrete set of possible values.
08 Aug 1977