2,457 research outputs found
Indigenous Land Rights and Self-Determination in Botswana
This article argues that government resistance to the recognition of indigenous land tenure and rights in Botswana presents a serious challenge for the future of indigenous Basarwa peoples. While the government of Botswana was a signatory to the United Nations Declaration on the Rights of Indigenous Peoples, it has not been willing to offer policy support for self-determination
“Gambling on the Economic Future of East St. Louis: The Casino Queen”
When the Casino Queen opened on the riverfront at East St. Louis, it was touted as a major contributor to the city\u27s economy. Has it been so
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Internet searching produces misleading findings regarding violent deaths in crisis settings: short report
Donor and agency priorities are influenced by a variety of political, social, and media-related forces that can have a profound impact on response and resource provision. We have attempted to assess how well internet searches articulate the span of violent death rates for five current “crisis” settings. In three graduate classes (2 public health, 1 information science) at US universities, during a four month period in 2017–2018, we asked approximately 60 graduate students to conduct an internet search to determine which of five countries had the highest and lowest “violence specific mortality rate”: Venezuela, Syria, Yemen, Central African Republic (CAR), or Mali. Students were divided into groups of three, and within each group explored this question by three approaches. Many graduate students in all groups could not determine the relative rates, especially which country had the lowest violence specific mortality rate. Of the 34 searches that identified a highest violent death rate country, 27.5 (81%) concluded it was Venezuela, followed by Syria (4.5; 13%), Mali (1; 3%) and CAR (1; 3%). Of the 26 searches that identified a least violent death rate 21.5 (83%) reported either CAR or Mali, followed by Yemen (2.5; 10%) and Syria (2; 8%). Aside from lack of data on CAR and Mali, students were perplexed about whether to include suicides or executions in the measure. This resulted in almost half of all inquiries unable to estimate a highest and lowest rate among these five countries. Where conclusions were drawn, it is likely the internet drew students to the opposite conclusion from reality. There are several reasons for this discordance, such as differing categories of violent deaths as defined by the World Health Organization, and search engine algorithms. It is probable, however, that larger issues of connectivity of individual societies with each other and the outside world are playing a profound role in the deceptive results found in this exercise. This insight emphasizes the internet’s under-reporting in the world’s most poor and remote locations, and highlights the importance of primary data collection and reporting in such settings
Scaling of heat transfer augmentation due to mechanical distortions in hypervelocity boundary layers
The Art of Solidarity: Visual and Performative Politics in Cold War Latin America, edited by Jessica Stites Mor and MarĂa del Carmen Suescun Pozas (Austin: University of Texas Press, 2018).
The Art of Solidarity: Visual and Performative Politics in Cold War Latin America, edited by Jessica Stites Mor and MarĂa del Carmen Suescun Pozas (Austin: University of Texas Press, 2018), 310 pages, Black and white images What does it mean when an artist sends an artwork in solidarity with Salvador Allende’s government in Chile, joining other artists who may or may not know each other, separated by national borders? What is the significance of boycotting the SĂŁo Paulo biennial in solidari..
The Art of Solidarity: Visual and Performative Politics in Cold War Latin America
What does it mean when an artist sends an artwork in solidarity with Salvador Allende’s government in Chile, joining other artists who may or may not know each other, separated by national borders? What is the significance of boycotting the São Paulo biennial in solidarity with the people living under dictatorship in Brazil, even if you have never travelled there? While “solidarity” is not usually thought of as jargon, it sometimes stands as a placeholder or stopgap for more detailed, micro-h..
Prospective randomized trial of ACUSEAL (Gore-Tex) versus Hemashield-Finesse patching during carotid endarterectomy: Early results
Background/PurposeSeveral studies have reported that carotid endarterectomy (CEA) with patch angioplasty produces superior results compared with primary closure. Conventional polytetrafluoroethylene (PTFE) patching has been shown to have results comparable to autogenous vein patching; however, it requires a prolonged hemostasis time. Therefore, many surgeons use collagen-impregnated Dacron patching (Hemashield [HP]). Recently, we reported a satisfactory hemostasis time using the new hemostatic PTFE patch (ACUSEAL by Gore). This study is the first prospective randomized trial comparing the ACUSEAL patch with the HP Finesse patch.Methods200 CEAs were 1:1 randomized into two patch closure groups (ACUSEAL or Finesse). All patients underwent immediate and 1 month postoperative duplex ultrasound studies. Demographic and clinical characteristics were similar in both groups, including the mean operative diameter of the internal carotid artery and length of arteriotomy.ResultsThe overall perioperative ipsilateral stroke rate was 2% (2% ACUSEAL, 2% Finesse; P = 1.0). The perioperative ipsilateral TIA rates were 0% for the ACUSEAL and 2% for the Finesse patch (P = .5). The combined perioperative neurological event (TIA + stroke) rates were 2% for ACUSEAL and 4% for the Finesse (P = .68). The early ≥50% restenosis rate was 0% for ACUSEAL vs 4% for Finesse patching. Two perioperative carotid thromboses were noted with Finesse patching vs none with ACUSEAL patching (P = .50). The combined early morbidity rate (TIA, stroke, and ≥50% restenosis or thrombosis) was 2% for the ACUSEAL patch vs 8% for the Finesse patch (P = .10). The mean hemostasis time for the ACUSEAL and Finesse patches was 5.1 vs 3.7 minutes (P = .01), however, the mean operative times were similar for both groups (P = .61).ConclusionThe perioperative neurological events and overall short-term morbidity associated with CEA when using ACUSEAL or Finesse patches were similar. Both patches have short hemostasis times
A variational principle for stationary, axisymmetric solutions of Einstein's equations
Stationary, axisymmetric, vacuum, solutions of Einstein's equations are
obtained as critical points of the total mass among all axisymmetric and
symmetric initial data with fixed angular momentum. In this
variational principle the mass is written as a positive definite integral over
a spacelike hypersurface. It is also proved that if absolute minimum exists
then it is equal to the absolute minimum of the mass among all maximal,
axisymmetric, vacuum, initial data with fixed angular momentum. Arguments are
given to support the conjecture that this minimum exists and is the extreme
Kerr initial data.Comment: 21 page
Seagrass Habitats as Nurseries for Reef-Associated Fish: Evidence from Fish Assemblages in and Adjacent to a Recently Established No-Take Marine Reserve in Dry Tortugas National Park, Florida, USA
Scientists and managers worldwide have increasingly advocated the use of marine protected areas (MPAs) to protect at—risk fish stocks. Most MPAs, however, have been established to protect reefs, while nonreef habitats, such as seagrasses, have received less consideration. In January 2007, an MPA called the Research Natural Area (RNA), was established as a no—take marine reserve in the Dry Tortugas National Park, Florida (DTNP), becoming the first MPA within the park boundaries to offer direct protection to seagrasses and reef habitat. We conducted a study using small—mesh Antillean Z—traps to (1) characterize fish assemblages in seagrass and reef habitats and (2) assess if differences in community structure existed between the RNA and adjacent open—use areas. Over 3 sampling events (Fall 2009, Spring 2010, Fall 2010), 3,163 individuals of 38 species were collected from 129 stations. Fish assemblages differed significantly among sampling events and between habitat types, but no differences were evident between the RNA and open—use areas. Unlike previous sampling efforts that focused on larger—bodied fish in the DTNP, Z—traps targeted small—bodied reef— and seagrass—associated fishes. Juvenile Haemulon plumierii and Epinephelus morio strongly contributed to community structure and were more abundant in seagrass habitats, which may serve as an important nursery area. Because the RNA was only established 2 years before this study was conducted, it could still be several years before benefits to the juvenile population become evident, but this study establishes the importance of consider-ing seagrass habitats when developing a reef—associated no—take marine reserve
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