2,249 research outputs found
Poverty among minorities in the United States: Explaining the racial poverty gap for Blacks and Latinos
The two largest minorities in the United States, African Americans and people of Hispanic origin, show official poverty rates that are at least twice as high as those among non-Hispanic Whites. These similarly high poverty rates among minorities are, however, the result of different combinations of factors, due to the specific characteristics of these two groups. In this paper, we analyze the role of demographic and labor-related variables in explaining the current differential in poverty rates among racial and ethnic groups in the United States and its recent evolution. Our results show, first, that these differentials were largely explained by differing family characteristics of the ethnic groups. Furthermore, we show that while labor market activity of family members and a preponderance of single mothers played a more significant role in explaining the higher poverty rates of Blacks, a larger number of dependent children is more closely associated with higher poverty among Latinos, who also suffer from a larger educational attainment gap and higher immigration rates. Finally, we show that both racial poverty gaps declined during the 1990s, and, in the case of Latinos, the downward trend has continued through the present decade. This reduction in the differentials was fully explained by characteristics, mainly the labor market performance of family heads, while the unexplained differential (conditional racial poverty gap) proved to be more persistent across time.poverty, gap, race, decomposition, Oaxaca-Blinder, United States, CPS, labor market, participation, education, family characteristics.
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Disciplinary Differences, Rhetorical Resonances: Graduate Writing Groups Beyond the Humanities
When we first established graduate student writing groups across the curriculum at Ohio University in the summer of 2003, we had several goals and outcomes in mind. Initially, we understood the usefulness of these groups as outreach projects to students and faculty in disciplines outside of English and the humanities–in other words, departments that are not always closely affiliated with our writing center. Second, we had a strong desire to help frustrated and often very lonely graduate research writers gain a greater sense of control and authority over their professional projects. Through our work with graduate students across the curriculum, each of us had noticed the gap in our current system of education where, as Carrie Shively describes, “expertise has been formally separated into domain knowledge and rhetorical knowledge. As a consequence, novices may have access to domain knowledge without access to rhetorical knowledge” (56). Given this separation between domain knowledge and rhetorical knowledge, we realized that graduate student writing groups could serve to bridge this gap between the conventions of discourse that are specific to each discipline and the conventions of writing that exist across different disciplines.University Writing Cente
Nonharmonic oscillations of nanosized cantilevers due to quantum-size effects
Using a one-dimensional jellium model and standard beam theory we calculate
the spring constant of a vibrating nanowire cantilever. By using the asymptotic
energy eigenvalues of the standing electron waves over the nanometer-sized
cross-section area, the change in the grand canonical potential is calculated
and hence the force and the spring constant. As the wire is bent more electron
states fits in its cross section. This has an impact on the spring"constant"
which oscillates slightly with the bending of the wire. In this way we obtain
an amplitude-dependent resonance frequency of the oscillations that should be
detectable.Comment: 6 pages, 5 figure
Изучение микробиологической стабильности геля кальция глюконата 2,5%
ГЕЛИКАЛЬЦИЯ ГЛЮКОНАТМИКРОБИОЛОГИ
Failure of hippocampal deactivation during loss events in treatment-resistant depression
Major depressive disorder is characterized by anhedonia, cognitive biases, ruminations, hopelessness and increased anxiety. Blunted responses to rewards have been reported in a number of recent neuroimaging and behavioural studies of major depressive disorder. In contrast, neural responses to aversive events remain an under-studied area. While selective serotonergic reuptake inhibitors are often effective in treating major depressive disorder, their mechanism of action remains unclear. Following a series of animal model investigations of depressive illness and serotonergic function, Deakin and Graeff predicted that brain activity in patients with major depressive disorder is associated with an overactive dorsal raphe nucleus with overactive projections to the amygdala, periaqueductal grey and striatum, and an underactive median raphe nucleus with underactive projections to the hippocampus. Here we describe an instrumental loss-avoidance and win-gain reinforcement learning functional magnetic resonance imaging study with 40 patients with highly treatment-resistant major depressive disorder and never-depressed controls. The dorsal raphe nucleus/ periaqueductal grey region of the midbrain and hippocampus were found to be overactive in major depressive disorder during unsuccessful loss-avoidance although the median raphe nucleus was not found to be underactive. Hippocampal overactivity was due to a failure to deactivate during loss events in comparison to controls, and hippocampal over-activity correlated with depression severity, self-report 'hopelessness' and anxiety. Deakin and Graeff argued that the median raphe nucleus normally acts to inhibit consolidation of aversive memories via the hippocampus and this system is underactive in major depressive disorder, facilitating the development of ruminations, while the dorsal raphe nucleus system is engaged by distal cues predictive of threats and is overactive in major depressive disorder. During win events the striatum was underactive in major depressive disorder. We tested individual patient consistency of these findings using within-study replication. Abnormal hippocampal activity correctly predicted individual patient diagnostic status in 97% (sensitivity 95%, specificity 100%) of subjects, and abnormal striatal activity predicted diagnostic status in 84% (sensitivity 79%, specificity 89%) of subjects. We conclude that the neuroimaging findings were largely consistent with Deaken and Graeff's predictions, abnormally increased hippocampal activity during loss events was an especially consistent abnormality, and brainstem serotonergic nuclei merit further study in depressive illness.</p
An Approach to Women in Vedic Culture: the Social Arguments of Arjuna in the Bhagavad Gita, Chapter 1 and its Relationship with the Manu Samhita
oai:ojs.www.journalacademicmarketingmysticismonline.net:article/17The article addresses the weighty issue of sexism in the Vedic culture. It uses both the Bhagavad Gita and the Manu Samhita as the basis for the exegesis of Arjuna on the social arguments and the definition of qualities for women and men in view of the pivotal role of the family to transcendence and the individual’s spiritual, moral and ethical obligations
British romanticism and composition theory: The traditions and value of Romantic rhetoric
My study examines, through the philosophies and writings of the British Romantic poets, particularly those of Wordsworth and Coleridge, their beliefs about education, their theories on composing, and their interaction with the political and social climate as they relate to current expressivist rhetorical theories and pedagogies. I explore the ways in which Romantic assumptions surface in subsequent philosophers, educators, and rhetoricians such as Matthew Arnold, John Stuart Mill, and John Dewey, and more recently, Ann Berthoff, Donald Murray, and Peter Elbow. I argue that like the Romantics, current expressivists are interested in cultivating an imaginative intellect in their writing students.
The dissertation makes a case for expressivist rhetoric, arguing that it is valuable and should not be ignored or forgotten in light of new social theories of rhetoric. Recently, Romantic rhetorical theories have come under sharp attack for, among other things, perpetuating the myth of the inspired writer , and for ignoring the fact that individuals are socially constructed and that the writing situation involves the dialectical interaction among writer, community, and social, political, and economic conditions. Although some of these attacks are valid, I argue that the problems critics have identified lie not with the theories themselves, but with the short-sighted application of these rich and complex Romantic theories. I look back, for instance, to the Romantic poets\u27 philosophies of the self in order to show expressivists that the tradition from which they evolved recognized that the individual was not isolated from its culture. I also argue, however, that the recent denigration of the expressivist theories of composition is often based on misconceptions of Romantic theory and practice as well as an incomplete knowledge of the tradition from which they arise.
I argue that expressivist rhetorical theories are also valuable because they align themselves with feminist theory and pedagogy and offer a way of teaching writing that is especially useful for women. Finally, I examine the usefulness of expressivist theories for the cross-cultural classroom, and point out ways in which these theories are valuable and ways in which they are problematic for ethnic minority students
Modelling and simulation of composites crash tests for validation of material models using LS-DYNA
Revisiting the trends in global inequality
I analyze trends in global income distribution since 1950 using a new companion WIID dataset with standardized country income percentiles. I investigate the robustness of these trends with respect to key data choices, as well as the degree to which the inequality trend depends on specific distributional views (such as the use of absolute versus relative inequality, or relative emphasis at the bottom versus the top). The results show a robust increase in absolute inequality, along with a more nuanced trend in relative inequality, with a very robust decline after 2000 that was interrupted by the COVID crisis but is expected to continue at least until 2028Xunta de Galicia | Ref. ED431B2022/03UNU-WIDER | Ref. WIID projectAgencia Estatal de Investigación | Ref. PID2022-137352NB-C42Universidade de Vigo/CISU
A focus in the jungle of medias: Hexágono Magazzine (1971-1975)
La revista Hexágono fue editada por Edgardo Antonio Vigo en la ciudad de La Plata, Argentina, entre 1971 y 1975. En este trabajo analizamos el recorrido de este proyecto editorial que pretendía -en un principio- difundir la obra de artistas ligados a distintos campos del arte experimental, interviniendo en la discusión sobre el sentido de la comunicación en plena época de expansión de los medios masivos, y ver cómo adquiere finalmente un rol de lucha política e interés por participar en una disputa “ideológica” mediante sus recursos visuales y estéticos.The HexágonoMagazine was edited by Edgardo Antonio Vigo in the city of La Plata, Argentina between 1971 and 1975. In this work we analyse the itinerary of this edition project, which purpose wasat first, to spread the work of artists linked to different fields of experimental art, intervening in the discussion about the sense of communication at the height of the era of mass media expansion, and seehow it finally takes a role inpolitical struggles and the interest of participating in an “ideological” dispute by means of visual and aesthetic.Fil: Gradin, Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Filosofía y Letras. Instituto de Filología y Literatura Hispánica "Dr. Amado Alonso"; Argentin
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