3,355 research outputs found
Analysis of a Lightly Manned Autonomous Combat Capability (LMAAC) Concept
NPS NRP Project PosterAnalysis of a Lightly Manned Autonomous Combat Capability (LMAAC) ConceptN9 - Warfare SystemsThis research is supported by funding from the Naval Postgraduate School, Naval Research Program (PE 0605853N/2098). https://nps.edu/nrpChief of Naval Operations (CNO)Approved for public release. Distribution is unlimited.
Analysis of a Lightly Manned Autonomous Combat Capability (LMAAC) Concept
NPS NRP Executive SummaryAnalysis of a Lightly Manned Autonomous Combat Capability (LMAAC) ConceptN9 - Warfare SystemsThis research is supported by funding from the Naval Postgraduate School, Naval Research Program (PE 0605853N/2098). https://nps.edu/nrpChief of Naval Operations (CNO)Approved for public release. Distribution is unlimited.
Three Recent Damaging Earthquakes in Mexico
Seismicity in Mexico is largely influenced by subduction earthquakes that originate along much of its Pacific Coast. These events have recurrently damaged Mexico City but other less frequent earthquakes produced by other sources and mechanisms also contribute to seismic hazard there and have damaged other important cities and towns. In this paper we review, from the point of view of geotechnical engineering, the effects of three of these less frequent events: the Manzanillo earthquake of Octobrer 9, 1995, the TehuacĂĄn Earthquake of June 6, 1999 and the TecomĂĄn Earthquake of January 21, 2003
First documentation of in vivo and in vitro ivermectin resistance in Sarcoptes scabiei
Ivermectin is increasingly being used to treat scabies, especially crusted (Norwegian) scabies. However, treatment failures, recrudescence, and reinfection can occur, even after multiple doses. Ivermectin resistance has been documented for some intestinal helminths in animals with intensive ivermectin exposure. Ivermectin resistance has also been induced in arthropods in laboratory experiments but, to date, has not been documented among arthropods in nature. We report clinical and in vitro evidence of ivermectin resistance in 2 patients with multiple recurrences of crusted scabies who had previously received 30 and 58 doses of ivermectin over 4 and 4.5 years, respectively. As predicted, ivermectin resistance in scabies mites can develop after intensive ivermectin us
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Modulation of finger photoplethysmographic traces during forced respiration: venous blood in motion?
Photoplethysmographic (PPG) signals were recorded from the fingers of 10 healthy volunteers during forced respiratory inspiration. The aim of this pilot study was to assess the effect of negative airway pressure on the blood volumes within the tissue bed of the finger, and the resultant modulation of PPG signals. The acquired signals were analysed and oxygen saturations estimated from the frequency spectra in the cardiac and respiratory frequency ranges. Assuming that respiratory modulation affects blood volumes in veins to a greater extent than in arteries, the local venous oxygen saturation was estimated. Estimated venous oxygen saturation was found to be 3.1% (±4.2%) lower than the estimated arterial saturation
Mini review: Opposing pathologies in cancer and Alzheimer's disease:Does the PI3K/Akt pathway provide clues?
An activity theory approach to fair assessment moderation in transnational education
This paper presents research from an Australian Learning and Teaching Council priority project which focuses on the assessment moderation practices between parent and partner universities in transnational partner universities. This paper addresses the challenges faced by transnational academic staff in ensuring comparable assessment standards. The data illuminates many issues of culture, language, relationships, trust, power and control. Using activity theory and its principles of contradictions, these issues are analysed in terms of Engestromâs expanded mediated triangle. The components of subject, mediating tools, objects, rules, community and division of labour are interconnected and in constant dynamic interaction emphasising the social and contextualised nature of moderation practices and policies. Systemic tensions are bound to emerge between and among these components. This paper sets out to identify these systemic tensions or contradictionsfor their heuristic value and potential as the driving force for change, indicating points of intervention to improve assessment moderation practices and policies. Among the three indicated contradiction triads, some fundamental contradictions exist between subjectcommunity-object, subject-mediating tools-object and subject-division of labour-object.These help identify the weaknesses in the existing collaborative patterns and lack of efficacy of the mediating tools for ignoring the âculture of useâ of the tools and a clear understanding of roles and responsibilities on the ground
Distribution of black flies (Diptera: Simuliidae) in the State of EspĂrito Santo, Brazil
Entre os anos de 2004 e 2008 foram realizadas coletas de Simuliidae em vĂĄrias localidades no Estado do EspĂrito Santo, Brasil. No total, 66 cĂłrregos e rios das doze principais bacias hidrogrĂĄficas do estado foram amostrados. Dezessete espĂ©cies foram coletadas, sendo que nove delas representam ocorrĂȘncias novas para o estado (Simulium pertinax, S. jujuyense, S. rubrithorax, S. subnigrum, S. travassosi, S. spinibranchium, S. hirtipupa, S. lutzianum e S. anamariae), duplicando o nĂșmero de espĂ©cies conhecidas no estado.We conducted a freshwater survey from 2004 to 2008 in several localities of EspĂrito Santo, Brazil. In total, 66 streams and rivers were sampled in the 12 hydrographic basins of the state. We collected and identified 17 species of which nine represent new records (Simulium pertinax, S. jujuyense, S. rubrithorax, S. subnigrum, S. travassosi, S. spinibranchium, S. hirtipupa, S. lutzianum e S. anamariae). These findings doubled the number of records of black fly species to the State of EspĂrito Santo, Brazil
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