717 research outputs found
The Rise of American Extremism: An Exploratory Analysis of American Religious and Political Extremism from Presidents Jimmy Carter to Barack Obama: 1977-2016
The purpose of this quantitative case study was to address the problem of domestic terrorism facing the United States. This concern led to a comprehensive examination of historical documents that focused on the temporal evolution of the problem beginning with the Carter administration and continuing through the Obama administration. The conceptual foundation centered on resolving the research question and validating three hypotheses directed at qualifying the escalation of domestic incidents of terrorism. This led to developing a behavioral model to assist law enforcement agencies in combating the issue of domestic terrorism. Bivariate and clustering statistical analysis validated the data while qualifying the demographics of the various typologies of U.S. domestic terrorists. The use of case study analysis, which drew on historical documents for evidence, considered the evolution of various groups, motivations, their ideologies, and goals. These variables were compared to successes and failures of relevant federal policies. The lack of understanding and oversight that led to an escalation of the number of incidents was also evaluated. Using ethical and scientific guidelines and protocols, the studyâs findings promote the need for future research and highlight the dangers of repeating the past. By developing a behavioral model, this study gives law enforcement a valuable tool for resolving domestic terrorism. Additional considerations relate to future policy implications and the course of future research
Foreign direct investment and spillovers : gradualism may be better
The definitive version is available at www3.interscience.wiley.comThe standard argument says that in the presence of positive spillovers foreign direct investment should be promoted and subsidized. In contrast, this paper claims that the very existence of spillovers may require temporarily restricting FDI. Our argument is based on two features of spillovers: they are limited by the economy's absorptive capacity and they take time to materialize. By letting in capital more gradually, initial investment has the time to create spillovers â and upgrade the economy's absorptive capacity â before further investment occurs. The economy converges to a steady state with a superior technology and a greater capital stockPublicad
Health Determinants among North Americans Experiencing Homelessness and Traumatic Brain Injury: A Scoping Review.
Traumatic brain injury (TBI) in those experiencing homelessness has been described in recent literature as a contributor to increased morbidity, decreased functional independence, and early mortality. In this systematically conducted scoping review, we aimed to better delineate the health determinants-as defined by Health Canada/Centers for Disease Control and Prevention (CDC)-associated with TBI in North Americans experiencing homelessness. BIOSIS, MEDLINE, CINAHL, EMBASE, SCOPUS, and Global Health were searched from inception to December 30, 2020. Gray literature search consisted of relevant meeting proceedings. A two-step process was undertaken, assessing title/abstract and full articles, respectively, based on inclusion/exclusion criteria, leading to the final 20 articles included in the review. Data were abstracted, assessing the aims, literature quality, and bias. Five health determinants displayed strong associations with TBI in those North Americans experiencing homelessness, including male gender, poor physical environment, negative personal health behaviors, adverse childhood experiences (ACEs), and low educational attainment. In those studies displaying a comparator population experiencing homelessness without TBI, the TBI group displayed trends toward increased disparity in Health Canada and CDC defined health determinants. Most studies suffered from moderate limitations. There are associations between male gender, poor physical environment, negative personal health behaviors, ACEs, and limited education in those experiencing homelessness and TBI. The results suggest that those experiencing homelessness with TBI in North America suffer poorer health consequences than those without TBI. Future research on TBI in North Americans experiencing homelessness should focus on health determinants as potential areas for intervention, which may lead to improved outcomes for those experiencing both homelessness and TBI
The Edwin Smith papyrus: a clinical reappraisal of the oldest known document on spinal injuries
Dating from the seventeenth century b.c. the Edwin Smith papyrus is a unique treatise containing the oldest known descriptions of signs and symptoms of injuries of the spinal column and spinal cord. Based on a recent âmedically based translationâ of the Smith papyrus, its enclosed treasures in diagnostic, prognostic and therapeutic reasoning are revisited. Although patient demographics, diagnostic techniques and therapeutic options considerably changed over time, the documented rationale on spinal injuries can still be regarded as the state-of-the-art reasoning for modern clinical practice
ALMA Capabilities for Observations of Spectral Line Emission
The Atacama Large Millimeter/submillimeter Array (ALMA) combines large
collecting area and location on a high dry site to provide it with unparalleled
potential for sensitive millimeter/submillimeter spectral line observations.
Its wide frequency coverage, superb receivers and flexible spectrometer will
ensure that its potential is met. Since the 1999 meeting on ALMA
Science\cite{RefA}, the ALMA team has substantially enhanced its capability for
line observations. ALMA's sensitivity increased when Japan joined the project,
bringing the 16 antennas of the Atacama Compcat Array (ACA), equivalent to
eight additional 12m telescopes. The first four receiver cartridges for the
baseline ALMA (Japan's entry has brought two additional bands to ALMA's
receiver retinue) have been accepted, with performance above the
already-challenging specifications. ALMA's flexibility has increased with the
enhancement of the baseline correlator with additional channels and
flexibility, and with the addition of a separate correlator for the ACA. As an
example of the increased flexibility, ALMA is now capable of
multi-spectral-region and multi-resolution modes. With the former, one might
observe e.g. four separate transitions anywhere within a 2 GHz band with a high
resolution bandwidth. With the latter, one might simultaneously observe with
low spectral resolution over a wide bandwidth and with high spectral resolution
over a narrow bandwidth; this mode could be useful for observations of
pressure-broadened lines with narrow cores, for example. Several science
examples illustrate ALMA's potential for transforming millimeter and
submillimeter astronomy.Comment: 6 pages, for the Proceedings of Science with ALMA: a new era for
Astrophysics: International Conference, 2006 held 13 - 17 November 2006 in
Madrid, Spai
Characterisation of chlorinated, brominated and mixed halogenated dioxins, furans and biphenyls as potent and as partial agonists of the Aryl hydrocarbon receptor
The Aryl hydrocarbon receptor (AhR) binds a variety of chlorinated and brominated dioxins, furans and biphenyls. Mixed halogenated variants have been recently identified in food at significant levels but full characterisation requires potency data in order to gauge their impact on risk assessment. Rat H4IIE and human MCF-7 cells were treated with various mixed halogenated ligands. Antagonist properties were measured by treating cells with various concentrations of TCDD in the presence of EC25 of the putative antagonist. Measurement of CYP1A1 RNA was used to quantify the potency of agonism and antagonism. The PXDDs were found to be slightly less potent than the corresponding fully chlorinated congeners with the exception of 2-B,3,7,8-TriCDD which was 2-fold more potent than TCDD. PXDFs and non-ortho-PXBs were found to be more potent than their chlorinated congeners whilst several mono-ortho-substituted PXBs were shown to have partial agonistic properties. REPs were produced for a range of mixed halogenated AhR-activating ligands providing a more accurate estimation of potency for risk assessment. Several environmentally abundant biphenyls were shown to be antagonists and reduce the ability of TCDD to induce CYP1A1. The demonstration of antagonism for AhR ligands represents a challenge for existing REP risk assessment schemes for AhR ligands
New Species of \u3cem\u3eGondwanamyces\u3c/em\u3e From Dying \u3cem\u3eEuphorbia\u3c/em\u3e Trees in South Africa
Gondwanamyces and its Custingophora anamorphs were first described from Protea infructescences in South Africa. Subsequently these unusual fungi were also found on Cecropia in Central America. During an investigation into the decline and death of native Euphorbia trees in South Africa, several fungal isolates resembling the anamorph state of Gondwanamyces were obtained from diseased tissues. In this study these isolates are identified based on morphology and comparisons of DNA sequences. Two previously unknown Gondwanamyces species were identified, both were associated with damage caused by beetles (Cossonus sp.). Inoculation studies showed that the new species of Gondwanamyces are pathogenic on Euphorbia ingens and may contribute to the decline of these trees
Water Maser Survey toward LowâMass Young Stellar Objects in the Northern Sky with the Nobeyama 45 Meter Telescope and the Very Large Array
n/
- âŚ