United States Air Force Applications of Unmanned Aerial Systems: Modernizing Airfield Damage Assessment

Modernizing airfield damage assessment has long been a priority mission at the Air Force Civil Engineer Center (AFCEC). Previously, AFCEC has made advances to expedite unexploded ordnance (UXO) neutralization and pavement repair. Missing from these initiatives is the initial assessment component. This thesis expands the idea of using Small Unmanned Aerial Systems (SUAS), applies it to the Air Force mission, and provides SUAS vehicle configuration and sensor recommendations. In this study, 25 civil engineer officers reviewed airfield imagery gathered using two small air vehicles. For the first review, participants attempted to identify UXOs and foreign object debris (FOD) in a computer interface that leverages images collected by a fixed-wing air vehicle. The second review uses a two-dimensional map created using a hex-rotor. The results of both systems were then compared to the status quo. Resulting statistics indicate that, irrespective of image resolution, additional analysis time does not result in greater object detection or correct identification. Overall, this thesis concludes that SUAS use for afield damage assessment shows promise. Moreover, they can provide the Air Force improved precision for locating UXOs and FOD, as well as estimate dimensions of damage. Dedicating resources to developing this technology will also assist with improving object detection and manpower efficiency. Further research is required for optimal image characterization requisite for reducing and/or eliminating the occurrence of false negative events

The effect of genomic information on optimal contribution selection in livestock breeding programs

BACKGROUND: Long-term benefits in animal breeding programs require that increases in genetic merit be balanced with the need to maintain diversity (lost due to inbreeding). This can be achieved by using optimal contribution selection. The availability of high-density DNA marker information enables the incorporation of genomic data into optimal contribution selection but this raises the question about how this information affects the balance between genetic merit and diversity. METHODS: The effect of using genomic information in optimal contribution selection was examined based on simulated and real data on dairy bulls. We compared the genetic merit of selected animals at various levels of co-ancestry restrictions when using estimated breeding values based on parent average, genomic or progeny test information. Furthermore, we estimated the proportion of variation in estimated breeding values that is due to within-family differences. RESULTS: Optimal selection on genomic estimated breeding values increased genetic gain. Genetic merit was further increased using genomic rather than pedigree-based measures of co-ancestry under an inbreeding restriction policy. Using genomic instead of pedigree relationships to restrict inbreeding had a significant effect only when the population consisted of many large full-sib families; with a half-sib family structure, no difference was observed. In real data from dairy bulls, optimal contribution selection based on genomic estimated breeding values allowed for additional improvements in genetic merit at low to moderate inbreeding levels. Genomic estimated breeding values were more accurate and showed more within-family variation than parent average breeding values; for genomic estimated breeding values, 30 to 40% of the variation was due to within-family differences. Finally, there was no difference between constraining inbreeding via pedigree or genomic relationships in the real data. CONCLUSIONS: The use of genomic estimated breeding values increased genetic gain in optimal contribution selection. Genomic estimated breeding values were more accurate and showed more within-family variation, which led to higher genetic gains for the same restriction on inbreeding. Using genomic relationships to restrict inbreeding provided no additional gain, except in the case of very large full-sib families

Constrained Superfields and Standard Realization of Nonlinear Supersymmetry

A constrained superfield formalism has been proposed recently to analyze the low energy physics related to Goldstinos. We prove that this formalism can be reformulated in the language of standard realization of nonlinear supersymmetry. New relations have been uncovered in the standard realization of nonlinear supersymmetry.Comment: 8+1 pages, Latex, expanded discussions on scalar and vector field

Nonlinear Realization of Spontaneously Broken N=1 Supersymmetry Revisited

This paper revisits the nonlinear realization of spontaneously broken N=1 supersymmetry. It is shown that the constrained superfield formalism can be reinterpreted in the language of standard realization of nonlinear supersymmetry via a new and simpler route. Explicit formulas of actions are presented for general renormalizable theories with or without gauge interactions. The nonlinear Wess-Zumino gauge is discussed and relations are pointed out for different definitions of gauge fields. In addition, a general procedure is provided to deal with theories of arbitrary Kahler potentials.Comment: 1+18 pages, LaTe

WINANDERMERE (Reino Unido). Inglaterra. (Lago), septentrional. Batimetría. 1787. 1:10000

Escala gráfica de 80 "Chains" [= 16,7 cm]. Orientado con lis en rosas de cuatro vientosIndica sondas batimétricsDestaca los principales caminos y núcleos de poblaciónEn el ángulo superior derecho : "Plate 10"Título y autor en cartela decorada con guirnaldasForma parte de la Colección Mendoz

CUMBRIA (Reino Unido) (Inglaterra). Caminos (1787). 1:6500

Escala gráfica de 40 "chains" [= 12,4 cm]. Orientado con lis en rosa de cuatro vientosDestaca los principales núcleos de poblaciónEn el ángulo superior derecho: "Plate 7"Guirnalda de flores rodeando título y autorForma parte de la Colección Mendoz

DERWENTWATER (Reino Unido) (Inglaterra) (Lago). Batimetría (1787). 1:5000

Escala gráfica de 25 "Chains" [= 14,2 cm]. Orientado con lis en rosa de dieciseis vientosDestaca los caminos y núcleos de población más significativosEn el ángulo superior derecho: "Plate 6"Título y autor en cartela decorada con guirnaldasForma parte de la Colección Mendoz

ROV-based Tracking of a Shallow Water Nocturnal Squid

This paper describes the use of a Remotely Operated Vehicle (ROV) equipped with a monocular vision system to find and track the squid Euprymna scolopes, so that motion behaviors of the squid could be characterized through the use of off-line image processing and state estimation. The ROV was deployed for several nights at several nearshore locations off Oahu, resulting in 10 hours of squid footage. Using blob-tracking image processing techniques and a Particle Filter state estimator, the squid can be detected and tracked. The position, velocity, and acceleration of the squid relative to the stationary ROV can be determined. Experiment results from tracking a simulated squid at known positions in a swimming pool and tracking of live squid in the ocean validate the performance of the tracking system. Results show the 3-D trajectory of the squid in a test feeding video. To the best of the authors’ knowledge, this is the first observatio

PENRITH (Reino Unido). Inglaterra. Ciudad. Mapas generales. 1787?. 1:6400

Pie de imprenta tomado de otros documentos del autorEscala gráfica de 35 "Chains" [= 11 cm]. Orientado con lis en rosa de cuatro vientosDestaca los caminos y núcleos de población más importantesEn el ángulo superior derecho : "Plate 1"Título y autor en cartela decorada con guirnaldasForma parte de la colección Mendoz