8,167 research outputs found
Alien Registration- Haines, Hartley B. (Presque Isle, Aroostook County)
https://digitalmaine.com/alien_docs/33498/thumbnail.jp
Alien Registration- Haines, Laura B. (Newport, Penobscot County)
https://digitalmaine.com/alien_docs/8174/thumbnail.jp
The principal\u27s role in creating a school culture that fosters achievement of students with high incidence disabilities: A study of one school
The purpose of this study was to examine the role of the principal in shaping a school culture that fostered academic achievement of students with high incidence disabilities. Research was conducted by means of a qualitative case study approach with data courses of informant interviews, parent focus group, observations of the daily workings of the school, and artifact reviews. Data unveiled five prominent areas of school culture: rituals, collaboration, an individualized instructional focus, community, and social emotional support. Each of these findings are defined and discussed based on data collected throughout the study. Data also support four additional findings in regard to the roles the principal played to impact each component of school culture including: serving as an administrator, instructional leader, community liaison, and child advocate. Matrix analysis compared the interactions of the school culture and the impact the principal played in each to determine what roles the school principal filled that directly affected the culture including the academic performance of students with high incidence disabilities
A concept for a fuel efficient flight planning aid for general aviation
A core equation for estimation of fuel burn from path profile data was developed. This equation was used as a necessary ingredient in a dynamic program to define a fuel efficient flight path. The resultant algorithm is oriented toward use by general aviation. The pilot provides a description of the desired ground track, standard aircraft parameters, and weather at selected waypoints. The algorithm then derives the fuel efficient altitudes and velocities at the waypoints
Anatomy, morphology and evolution of the patella in squamate lizards and tuatara (Sphenodon punctatus)
The patella (kneecap) is the largest and best-known of the sesamoid bones, postulated to confer biomechanical advantages including increasing joint leverage and reinforcing the tendon against compression. It has evolved several times independently in amniotes, but despite apparently widespread occurrence in lizards, the patella remains poorly characterised in this group and is, as yet, completely undescribed in their nearest extant relative Sphenodon (Rhynchocephalia). Through radiography, osteological and fossil studies we examined patellar presence in diverse lizard and lepidosauromorph taxa, and using computed tomography, dissection and histology we investigated in greater depth the anatomy and morphology of the patella in 16 lizard species and 19 Sphenodon specimens. We have found the first unambiguous evidence of a mineralised patella in Sphenodon, which appears similar to the patella of lizards and shares several gross and microscopic anatomical features. Although there may be a common mature morphology, the squamate patella exhibits a great deal of variability in development (whether from a cartilage anlage or not, and in the number of mineralised centres) and composition (bone, mineralised cartilage or fibrotendinous tissue). Unlike in mammals and birds, the patella in certain lizards and Sphenodon appears to be a polymorphic trait. We have also explored the evolution of the patella through ancestral state reconstruction, finding that the patella is ancestral for lizards and possibly Lepidosauria as a whole. Clear evidence of the patella in rhynchocephalian or stem lepidosaurian fossil taxa would clarify the evolutionary origin(s) of the patella, but due to the small size of this bone and the opportunity for degradation or loss we could not definitively conclude presence or absence in the fossils examined. The pattern of evolution in lepidosaurs is unclear but our data suggest that the emergence of this sesamoid may be related to the evolution of secondary ossification centres and/or changes in knee joint conformation, where enhancement of extensor muscle leverage would be more beneficial.Sophie Regnault, Marc E. H. Jones, Andrew A. Pitsillides, John R. Hutchinso
Application of GPS tracking techniques to orbit determination for TDRS
In this paper, we evaluate two fundamentally different approaches to TDRS orbit determination utilizing Global Positioning System (GPS) technology and GPS-related techniques. In the first, a GPS flight receiver is deployed on the TDRSS spacecraft. The TDRS ephemerides are determined using direct ranging to the GPS spacecraft, and no ground network is required. In the second approach, the TDRSS spacecraft broadcast a suitable beacon signal, permitting the simultaneous tracking of GPS and TDRSS satellites from a small ground network. Both strategies can be designed to meet future operational requirements for TDRS-2 orbit determination
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