5,902 research outputs found
The Effect of Immigration along the Distribution of Wages
No full textThis paper analyses the effect immigration has on wages of native workers. Unlike most previous work, we estimate wage effects along the distribution of native wages. We derive a flexible empirical strategy that does not rely on pre-allocating immigrants to particular skill groups. In our empirical analysis, we demonstrate that immigrants downgrade considerably upon arrival. As for the effects on native wages, we find a pattern of effects whereby immigration depresses wages below the 20th percentile of the wage distribution, but leads to slight wage increases in the upper part of the wage distribution. This pattern mirrors the evidence on the location of immigrants in the wage distribution. We suggest that possible explanations for the overall slightly positive effect on native wages, besides standard immigration surplus arguments, could involve deviations of immigrant remuneration from contribution to production either because of initial mismatch or immigrant downgrading
<i>HIST1H2BB</i> and <i>MAGI2</i> Methylation and Somatic Mutations as Precision Medicine Biomarkers for Diagnosis and Prognosis of High-grade Serous Ovarian Cancer
No full textEsta investigación fue financiada por la subvención Outside the Box de la Fundación para el Cáncer de Ovario HERA (a B.L. Valle); la Alianza para la Investigación del Cáncer de Ovario (a I.-M. Shih); el Instituto Nacional del Cáncer U01CA84986 (a D. Sidransky) y K01CA164092 (a R. Guerrero-Preston); P50CA228991 (a I.-M. Shih) y el Instituto Nacional de Salud de las Minorías y Disparidades en la Salud R44MD014911 (a R. Guerrero-Preston).This research was supported by HERA Ovarian Cancer Foundation Outside the Box Grant (to B.L. Valle); Ovarian Cancer Research Alliance (to I.-M. Shih); National Cancer Institute U01CA84986 (to D. Sidransky) and K01CA164092 (to R. Guerrero-Preston); P50CA228991 (to I.-M. Shih) and National Institute on Minority Health and Health Disparities R44MD014911 (to R. Guerrero-Preston)
Buckling of an axisymmetric vesicle under compression: the effects of resistance to shear
No full textWe consider the axisymmetric deformation of an initially spherical, porous vesicle with incompressible membrane having finite resistance to in-plane shearing, as the vesicle is compressed between parallel plates. We adopt a thin-shell balance-of-forces formulation in which the mechanical properties of the membrane are described by a single dimensionless parameter, C, which is the ratio of the membrane's resistance to shearing to its resistance to bending. This results in a novel free-boundary problem which we solve numerically to obtain vesicle shapes as a function of plate separation, h. For small deformations, the vesicle contacts each plate over a small circular area. At a critical value of plate separation, hTC, there is a transcritical bifurcation from which a new branch of solutions emerges, representing buckled vesicles which contact each plate along a circular curve. For the values of C investigated, we find that the transcritical bifurcation is subcritical and that there is a further saddle-node bifurcation (fold) along the branch of buckled solutions at h = hSN (where hSN > hTC). The resulting bifurcation structure is commensurate with a hysteresis loop in which a sudden transition from an unbuckled solution to a buckled one occurs as h is decreased through hTC and a further sudden transition, this time from a buckled solution to an unbuckled one, occurs as h is increased through hSN. We find that hSN and hTC increase with C, that is, vesicles that resist shear are more prone to buckling. <br/
Diamond's depth distribution systematics
No full textThe thermobarometric analysis of inclusions in lithospheric diamonds has shown that these diamonds may originate from a wide range of depths, with a global mode at ~175 ± 15 km. Studies based on diamond depth distribution at global scale, however, cannot clarify if this mode reflects a real concentration of diamonds, preferential sampling of materials from this level by ascending kimberlites, or simply a statistical distribution within the hard limits imposed by diamond stability, lithosphere thickness and mantle adiabat under typical cratonic thermal regimes. We addressed this problem by comparing depth distributions for peridotitic diamonds from the three localities that have been the most prolific for diamond geobarometry (Cullinan, Kimberley and Voorspoed, South Africa) with those of mantle xenocrysts from the same kimberlite sources. The revised P–T estimates indicate that the diamonds were formed at T higher, equal or lower than the ambient geotherm recorded by the xenocrysts. These conditions may represent old mantle thermal regimes or local thermal perturbations related to infiltration of parental fluids or melts. Nonetheless, the studied diamonds show similar depth distributions for the different localities, with a distinct mode at ⁓180 ± 10 km. The similarity of these distributions with that calculated for peridotitic diamonds worldwide, as well as the lack of systematic correlation with kimberlite sampling efficiency as recorded by mantle xenocrysts, suggests that this mode has genetic significance. Based on observed depth distributions and thermodynamic modeling of COH fluids, diamond-forming processes are predicted to become less efficient with decreasing depth from at least ⁓165 km. In addition, diamond endowment near the base of the lithosphere may be negatively affected by infiltration of carbon-undersaturated melts or fluids after diamond formation. Considering the poor correlation between diamond and xenocryst depth distributions in single kimberlites or kimberlite clusters, even limited xenocryst records from diamond favorable depths (especially from the 160–190 km interval) may correspond to significant diamond potential
Persistent inequality when learning requires a minimal standard of living
No full textThis paper studies the persistence of wealth and utility inequality in a dynamicmodel of skill acquisition with complete credit markets and rational, perfectly altruistic,dynastic utility-maximization, when efficient learning requires a minimal standardof living. The main result is that, if the minimal standard of living is not triviallysmall, at any stationary equilibrium without intergenerational mobility there are?poor?, unskilled and ?rich?, skilled dynasties. Members of rich dynasties inherit morefrom their parents than members of poor dynasties. The former in general acquireskill, while the latter remain unskilled, and - most importantly - members of rich familiesalso enjoy strictly higher utility than members of poor dynasties. This paper studies the persistence of wealth and utility inequality in a dynamicmodel of skill acquisition with complete credit markets and rational, perfectly altruistic,dynastic utility-maximization, when efficient learning requires a minimal standardof living. The main result is that, if the minimal standard of living is not triviallysmall, at any stationary equilibrium without intergenerational mobility there are?poor?, unskilled and ?rich?, skilled dynasties. Members of rich dynasties inherit morefrom their parents than members of poor dynasties. The former in general acquireskill, while the latter remain unskilled, and - most importantly - members of rich familiesalso enjoy strictly higher utility than members of poor dynasties
Depot, Lake Preston, Kingsbury County
No full text3 x 5.5 photograph, a two-story building with a bay window, one-story part on the side and brackets under the overhanging gable roof, the sign on the side says "Lake Preston"1 Photo Album H2009-101 5644 R.C. Lathrop Coll Box No 3Chicago Milwaukee St. Paul and Pacific Railroad Company Depot "KS" at Lake Preston S. Dak. Taken May 20, 1967 Built 1886 old I & S. M. Div. New I. M. & D. Div by R.C. Lathrop MP 30 Acct No P-4630 Looking at the South End, West Side [stamp] G14
View of part of Sydney, the capital of New South Wales, taken from Dawes's Point [picture] /
No full textNo. 9 of the first set of colonial views published by Absalom West in 1813.; First views in Australia, pl. no. 120, p. 309.; Exhibited: Prints and Australia, Australian National Gallery, 1989.; Rex Nan Kivell Collection NK349-I.; S1961; U2024 NK349-I hand col.; S1952
Influencing community involvement in school: a School Community Council
No full textThe purpose of this qualitative research was to explore the role a School Community Council (SCC) played in encouraging community involvement in a kindergarten to grade 12 school. Via 35 interviews, thematic data reflected that the SCC's influence was limited. As analyzed through social capital theory, SCC members shared thin levels of trust, which influenced the association's impact on community involvement. Research implications underscore the need for policymakers to reconsider SCC membership timelines. (English) ABSTRACT FROM AUTHOR]; L'objectif de cette recherche qualitative était d'explorer le rôle joué par un Conseil scolaire communautaire (CSC) dans la promotion de l'implication communautaire au sein d'une école accueillant des élèves de la maternelle à la cinquième secondaire. Les données thématiques recueillies grâce à 35 entrevues ont démontré que l'influence de CSC était limitée. Analysée en regard de la théorie du capital social, les membres du CSC ont communiqué un faible niveau de confiance, ce qui a influencé l'impact de cette association sur l'implication communautaire. Les résultats de la recherche mettent en lumière l'importance pour les décideurs de réviser l'historique de l'adhésion des CSC. (French) ABSTRACT FROM AUTHOR]; Copyright of McGill Journal of Education is the property of McGill Journal of Education and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)M3: ArticleSource type: Electronic(1
Historia y memoria histórica: un análisis para el debate.
No full textEl tema de la memoria histórica desde hace años viene siendo
objeto de muchos debates no sólo entre la clase política y la ciudadanía, sino
también entre los historiadores. El presente artículo recoge las posiciones de
Paloma Aguilar, Carolyn P. Boyd, Francisco Espinosa, Ismael Saz, Paul Preston,
Enrique Moradiellos, Santos Juliá y Pelai Pagès, en un intento de clarificar
posiciones y situar en el presente los términos del debate.La memòria històrica ha estat objecte, des de fa anys, de molts debats
no només entre la classe política i la ciutadania, sinó també entre els historiadors.
Aquest article recull les posicions de Paloma Aguilar, Carolyn P. Boyd,
Francisco Espinosa, Ismael Saz, Paul Preston, Enrique Moradiellos, Santos
Juliá i Pelai Pagès, en un intent d’aclarir posicions i de situar en el present els
termes del debat.Over the last years, historical memory has been the subject of
much debate, not only among politicians and citizens but also among historians.
This article describes the points of view of Paloma Aguilar, Carolyn P.
Boyd, Francisco Espinosa, Ismael Saz, Paul Preston, Enrique Moradiellos, Santos Juliá and Pelai Pagès, in an attempt to clarify positions and place the
terms of this debate in the present
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