Showing papers by "Saint Mary's University published in 1996"
Aarhus University1, University of Southern California2, Sternberg Astronomical Institute3, Tata Institute of Fundamental Research4, Queen Mary University of London5, University of Toronto6, Los Alamos National Laboratory7, Yale University8, University of Vienna9, University of Liège10, University of Cambridge11, Saint Mary's University12, Lawrence Livermore National Laboratory13, Stanford University14, Goddard Space Flight Center15, Technische Universität München16, University of California, Los Angeles17
TL;DR: Data from the GONG project and other helioseismic experiments reveal subtle errors in the models, such as an excess in sound speed just beneath the convection zone, which is plausible that the sound-speed differences reflect weak mixing in stellar interiors.
Abstract: Data from the Global Oscillation Network Group (GONG) project and other helioseismic experiments provide a test for models of stellar interiors and for the thermodynamic and radiative properties, on which the models depend, of matter under the extreme conditions found in the sun. Current models are in agreement with the helioseismic inferences, which suggests, for example, that the disagreement between the predicted and observed fluxes of neutrinos from the sun is not caused by errors in the models. However, the GONG data reveal subtle errors in the models, such as an excess in sound speed just beneath the convection zone. These discrepancies indicate effects that have so far not been correctly accounted for; for example, it is plausible that the sound-speed differences reflect weak mixing in stellar interiors, of potential importance to the overall evolution of stars and ultimately to estimates of the age of the galaxy based on stellar evolution calculations.
1,136 citations
399 citations
151 citations
TL;DR: The authors derived a forward-looking rational expectations house price model and empirically tested its ability to explain short-run fluctuations in real house prices in Vancouver, British Columbia from 1979 to 1991.
Abstract: This paper derives a forward-looking rational expectations house price model and empirically tests its ability to explain short-run fluctuations in real house prices. A novel approach to proxying the imputed rents of owner-occupied housing, as a function of observable housing market fundamentals, is combined with a housing market arbitrage relation to derive a present value model for real house prices. Tests of the rational expectations, nonlinear cross-equation restrictions reject the joint null hypothesis of rational expectations and the asset-based housing price model for quarterly, single-detached house prices in the city of Vancouver, British Columbia from 1979–1991. The model fails to fully capture observed house price dynamics in two real estate booms but tracks real house prices well in less volatile times, suggesting that prices may temporarily deviate from fundamental values in real estate price cycles.
146 citations
TL;DR: In this paper, a multidentate ligand, CpHNMeSiN(H)R (SiNR = −SiMe2N-tert-butyl; NMe = 3-CH2CH2NMe2), was prepared in 71% yield as a mixture of 1,3 and 1,2 isomers (≈7:3).
106 citations
TL;DR: In this article, the causal relationship between global surface temperature (global warming) and global carbon dioxide emission (CO{sub 2}) is modelled and analyzed by causality and spectral analysis in the time domain and frequency domain, respectively.
59 citations
TL;DR: In this article, a vector autoregressive model was developed to forecast real estate returns and showed that time variation in real estate risk is partly predictable, and thus can help us to forecast future movements in commercial property values.
Abstract: The dramatic decline in commercial property values in recent years has changed popular perception about real estate investment risk. This paper aims to generate new insights into real estate investment risk and its implications for real estate valuation. It shows that the risk premium on unsecuritized commercial real estate varies over time and is strongly related to general economic conditions. A vector autoregressive model developed to forecast real estate returns reveals that time variation in real estate risk is partly predictable, and thus can help us to forecast future movements in commercial property values. The analysis suggests that in periods surrounding major market movements, changes in commercial property prices are driven more by changes in expected (required) returns than by changes in current and expected future property income. Changing expected returns may reflect rational revisions of real estate investment risk, or alternatively investor psychology or sentiment.
41 citations
TL;DR: In this article, the authors investigate the effects of job previews and compensation policy on applicant attraction and job choice and find that the effects depend on the compensation of the job and other job attributes.
37 citations
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32 citations
TL;DR: The age range of voluminous bimodal plutonism in the highlands of the Canadian Appalachian orogen is from 358 to 363 Ma (late Devonian) as discussed by the authors.
Abstract: The Cobequid Highlands in the Canadian Appalachian orogen lie within Avalonia adjacent to the Meguma Terrane. U-Pb (zircon) data show that the age range of voluminous bimodal plutonism in the highlands is from 358 to 363 Ma (late Devonian). This age range is much narrower than that previously suggested by Rb/Sr geochronology and confirms that the Cobequid Highlands preserve the youngest large-scale plutonic event in the Canadian Appalachians. Late Palaeozoic tectonic history of the Appalachian orogen is profoundly influenced by predominantly dextral motion on the Avalon-Meguma terrane boundary. This age of plutonism is coeval with previously published 40Ar/39Ar (muscovite) plateau ages derived from shear zones in the Meguma terrane adjacent to the terrane boundary, which is defined by the Minas fault zone. The NNE trending structural grain of the Appalachian orogen is disturbed in this area by the E-W Minas fault zone and pluton emplacement may have been associated with motion along this terrane boundary.
TL;DR: The case of the Canadian Forest Round Table on Sustainable Development as mentioned in this paper provides evidence of diverse stakeholder representatives managing their conflict through dialogue, informal exchange, and field trips, and reveals new insights on factors which facilitate constructive conflict management and collaboration in a multistakeholder context.
Abstract: The case of the Canadian Forest Round Table on Sustainable Development provides evidence of diverse stakeholder representatives managing their conflict through dialogue, informal exchange, and field trips. This case study reveals new insights on factors which facilitate constructive conflict management and collaboration in a multistakeholder context. The findings indicate the value of dialogue, common evidence, and shared experience. Implications for theory and practice are discussed.
TL;DR: In this article, the authors found that extroversion has significant effects on the middle adolescent's routine travel behavior and out-of-home activity choices, and formulated and tested hypotheses concerning the effects of extoversion on the size and composition of student activity spaces.
Abstract: The purpose of this study is to determine whether properties of the activity spaces of middle adolescents are related to extroversion. The Revised Eysenck Personality Questionnaire was administered as part of an interview survey of grade 10 students attending two high schools in Winnipeg, Manitoba. Hypotheses concerning the effects of extroversion on the size and composition of student activity spaces were formulated and tested using stepwise multiple regression analysis. Overall, the findings disclose that extroversion has significant effects on the middle adolescent's routine travel behavior and out-of-home activity choices.
TL;DR: In this article, the authors show that pluton emplacement was not the result of extension in releasing bends during transcurrent shear, but rather, flower-structure high-angle faults acted as magma conduits and space was created by translation of wall rocks along thrust faults at depth, developing space away from the master fault zone and backward collapse of the uplifted magma chamber creating space towards the fault zone.
Abstract: Latest Devonian A-type granite-gabbro plutons, in part ductilely deformed, are spatially associated with the strike-slip Cobequid fault zone. The youngest intrusions are close to the Cobequid fault zone, which was the main conduit for magma. Two phases of deformation accompanying magma emplacement are recognized. Early magmas intruded ductile rocks during left-lateral oblique thrust movements. A second stage of right-lateral oblique slip normal faulting accommodated uplift of the plutons when coarse granite was emplaced in the crestal regions. Cross-cutting late stage porphyries, granitic clasts in marginal basins cut by granitic dykes, and superposition of brittle on ductile structures all indicate rapid uplift of the plutons. The geometry of the Cobequid fault zone shows that pluton emplacement was not the result of extension in releasing bends during transcurrent shear. Rather, flower-structure high-angle faults acted as magma conduits and space was created by two processes: translation of wall rocks along thrust faults at depth, developing space away from the master fault zone and backward collapse of the uplifted magma chamber creating space towards the fault zone.
TL;DR: Cape Breton Island is host to widespread magmatic activity dated between ∼ 550 and 580 Ma as discussed by the authors and its products include the Capelin Cove pluton and host Coastal Volcanic Belt; both are composed of bimodal, tholeiitic, calc-alkaline suites that were emplaced on a thin sialic crust in a volcanic arc system.
TL;DR: In the case of the Gfohl gneisses from the Moldanubian of the Czech Republic, the authors of as discussed by the authors made a distinction between prograde and decompressional features in these rocks.
TL;DR: The Ougda magmatic complex as discussed by the authors is composed of - 800 Ma old, relatively high P-T (i.e., Grt + Cpx-bearing: P > 5 kbar; T≈900'Q, tholeiitic mafic/ultramafic cumulates and related rocks intruded by intermediate to mafics calcalkali plutons (e.g., Cpx+Hbl-bearing gabbro) and dikes).
Abstract: The Neoproterozoic Ougda magmatic complex occurs within platformal carbonate rocks in the western part of the Pan-African fold belt of the Tuareg shield (NW Africa). It is composed of - 800 Ma old, relatively high P-T (i.e., Grt + Cpx-bearing: P > 5 kbar; T≈900'Q, tholeiitic mafic/ultramafic cumulates and related rocks intruded by intermediate to mafic calcalkali plutons (e.g., Cpx+Hbl-bearing gabbro) and dikes. Apparent contrasts in structural level of crystallization indicate that the calc-alkali rocks are significantly younger than the tholeiites, which temporally correlate with a period of regional extension in this part of Africa. Intrusion of the calc-alkali rocks may have occurred during the formation of an arc after the tholeiitic rocks had been (diapirically?) emplaced within the shelf carbonates, and prior to (> 630 Ma) the Pan-African orogeny. Data reported herein indicate that the Ougda complex records the inception and demise of a Neoproterozoic ocean basin. Similar crustal sections have been described from collisional (e.g., Aleutian islands) and extensional (e.g., Ivrea-Verbano zone) settings, indicating that processes operating in both environments can generate nearly indistinguishable igneous suites; the prevalence of shallow-level calc-alkali rocks in both settings may mask the presence of more mafic, tholeiitic rocks at depth.
TL;DR: In this article, an experiment was conducted to assess the effect of victim tolerance, harasser performance status, and decision maker sex on reactions to a complaint of sexual harassment in the workplace.
TL;DR: In this paper, the reduction of the zirconium(IV) precursor Zr( η 5 -C 5 H 5 )Cl 2 [N(SiMe 2 CH 2 PPr 2 i ) 2 ] with sodium-amalgam under argon or vacuum generates the mononuclear Zr III complex Zr ( ε( ε, C 5 H5 )Cl[N.
TL;DR: The 2730-Ma-old Hunter Mine Group (HMG), a dominantly felsic subaqueous volcanic sequence, was formed during early arc construction in the Abitibi greenstone belt (Quebec, Canada) as discussed by the authors.
TL;DR: The reaction works well with electron withdrawing groups in the ortho- or para-position of the aryl moiety, but when the coupling reaction was attempted with a p-bromo-substituted diazonium salt, the reaction afforded the pentazadiene 8 and not the expected triazene.
Abstract: Reaction of a series of arene diazonium salts with glycinamide affords the N-coupling products the 1-aryl-3-(carbamoylmethyl)triazenes, ArN=NNHCH2CONH2 3, which have been characterized by 1H and 13C NMR spectroscopy. The reaction works well with electron withdrawing groups in the ortho- or para-position of the aryl moiety, but when the coupling reaction was attempted with a p-bromo-substituted diazonium salt, the reaction afforded the pentazadiene 8 and not the expected triazene. Triazenes with a reactive ester or cyano-substituent in the ortho-position of the benzene ring were found to undergo spontaneous cyclization to the respective 1,2,3-benzotriazine heterocycles 4a and 5. The 3-(carbamoylmethyl)-4-imino-1,2,3-benzotriazine (5) was characterized by further NMR experiments, 15N NMR, and homonuclear correlated NMR spectra.
TL;DR: A myxosporean producing aggregations of white pseudocysts in skin covering the posterior margin of the operculum and perioral tissue of Cottus cognatus in Lake Michigan is described as Myxobolus cognati n.
Abstract: A myxosporean producing aggregations of white pseudocysts in skin covering the posterior margin of the operculum and perioral tissue of Cottus cognatus in Lake Michigan is described as Myxobolus cognati n sp (Myxosporea) Histological sections revealed that the parasite develops in vascularized regions of the dermis and with development protrudes beyond the surrounding skin surface Fixed spores are oval in front view, measure 120-140 microns long and 95-105 microns wide, and contain 8-11 filament coils wound tightly and perpendicular to the longitudinal axis of the capsule Myxobolus cognati resembles Myxobolus rhinichthidis Fantham, Porter and Richardson, 1939 from subepithelial tissue of the operculum of the cyprinid Rhinichthys cataractae Spores in the 2 species are the same size and shape However, in contrast to those of M cognati, spores of M rhinichthidis have filament coils wound loosely at 45 degrees to the axis of the polar capsule and have no sutural ridge folds
TL;DR: The Fountain Lake Group of the northern Chignecto peninsula consists of basalt and andesite flows, rhyolite shallow intrusions and minor flows, and rhyolitic pyroclastic rocks as mentioned in this paper.
Abstract: The volcanic succession of the Fountain Lake Group of the northern Chignecto peninsula consists of basalt and andesite flows, rhyolite shallow intrusions and minor flows, and rhyolitic pyroclastic rocks. Fault scarp breccia, fluvial conglomerate and sandstone, and lacustrine siltstone and minor limestone are interbedded with the volcanic rocks. The succession is cut by mafic dykes, some of which predate and others postdating brittle north-vergent thrusting. Detailed geochemical and petrographic study shows that the volcanic rocks geochemically resemble the plutonic rocks of the Cape Chignecto pluton that are thrust over the volcanic succession. Diabase dykes may record the contamination of gabbroic magma by residual basc-of-crust plagioclase-pyroxenc granulite from which felsic magma had been extracted. Fractionation of this mafic magma resulted in enrichment in incompatible elements in some dykes. Andesites evolved from basaltic parents cither by fractionation or by melting of hydrous gabbros. Much of the volcanic succession shows low-temperature alteration including silicification.
RESUME
La succession volcaniquc du Groupe du lac Fountain dans la partie septcntrionale de la peninsule de Chignecto comprend des ccoulcments de basalte et d'andesite, des intrusions peu profondes de rhyolite et des ecoulements mineurs, de meme que des roches pyroclastiques rhyolitiques. Des breches d'escarpements de failles, du gres et un conglomerat fluvial, ainsi que du siltstone lacusfre et une faible quantite de catcaire sont interstratifies-de roches volcaniques. La succession est entrecoupee par des filons intrusifs mafiques, dont certains sont anterieurs et d'autres posterieurs a une poussee fragile orientee vers le nord. Une etude geochimique et petrographique detaillee montre que les roches volcaniques ressemblent geochimiquement aux roches plutoniques de l'intrusion ignee de Cape Chignecto qui recouvrent la succession volcanique. Des filons intrusifs diabasiques peuvent enregistrer la contamination du magma gabbroique par la granulite residuelle de ptagioclase-pyroxene de la base de la croute de laquelle du magma felsique avait ete extrait. Le fractionnement de ce magma maflquc a produit un enrichissement en elements incompatibles de certains filons intrusifs. Les andesites ont evolue e partir de parents basaltiques, par fractionnement ou par fusion de gabbros aqueux. Une vaste part de la succession volcanique rcvele une alteration, notamment une silicification, a basse temperature.
[Traduit par la redaction]
TL;DR: Two different classes of claw-free well-covered graphs having no 4-cycles are determined — those which are 4-connected and 4-regular as well as those which is 4- connected and planar.
TL;DR: In this article, the effects of the process that generates true betas for TSE stocks, as well as thin trading effects, are incorporated into the beta adjustment model, and they show that when OLS beta estimates are used to forecast their future risk levels, order bias accounts for 86% of forecast error, while thin trading effect accounts for 14% of the forecast error.
Abstract: We have incorporated effects of the process that generates true betas for TSE stocks, as well as thin trading effects, into the beta adjustment model. We note the Blume and Dimson and Marsh beta adjustment techniques aim at eliminating beta forecast error through regression tendency bias. Effects of other sources of forecast error have been ignored. We show the process generating security betas affects both cross-sectional correlation coefficient and order bias, while thin trading affects only cross-sectional correlation coefficient. We demonstrate that when OLS beta estimates are used to forecast their future risk levels, order bias accounts for 86% of forecast error, while thin trading effects account for 14% of forecast error. A beta regression tendency model which properly accounts for effects of cross-sectional correlation (which is a function of thin trading) and order bias completely abates forecast error. Our results have implications for the use of correlation coefficient to measure stability of betas across time, for beta adjustment models proposed in the literature, and for event study methodologies that rely on prediction errors.
TL;DR: The X-ray structure of trans-dinitratotetetrapyridinezinc(II)·2 pyridine has been determined in this paper, with values ofR=0.069 and r ≥ 0.075.
Abstract: The X-ray structure oftrans-dinitratotetrapyridinezinc(II)·2 pyridine has been determined. Clear colorless crystals of the complex crystallize in the orthorhombic space group Ccca, with cell dimensionsa=12.108(3),b=14.966(7) andc=17.113(4)A;V=3101.0(18)A3 and Z=4. Unique reflections, 755, withI
net>3σ (I) on refinement afforded values ofR=0.069 andR
w=0.075.