The Crabb Site (41TT650), a Prehistoric Caddo Site on Tankersley Creek, Titus County, Texas

In this article, we discuss the archaeological findings at the Crabb site (411T650), a prehistoric Caddo settlement on an upland remnant/knoll in the Tankersley Creek floodplain in Titus County, Texas. Tankersley Creek is one of the principal tributaries of Big Cypress Creek, and it flows south past the Crabb site to merge with the larger creek a few miles downstream. This part of Titus County is in the Pineywoods, an area with abundant moisture and a warm, moderate climate in modem times, with an overstory vegetation of pines and a variety of hardwoods (principally several species of oaks and hickory). Along Tankersley Creek itself, the vegetation would have been dominated by more mesic hardwoods that tolerated occasional inundation from seasonal floods and standing water in the floodplain, such as water oaks and sweetgum trees, bushes, vines, and shrubs. The Tankersley Creek valley is well-known for its archaeological resources, particularly those of prehistoric Caddo age, and numerous prehistoric Caddo sites have been identified and recorded in the valley in the last 20 years. The Crabb site is one of several dozen prehistoric Caddo sites known in the creek valley, and one where limited investigations over the last 10 years have recovered interesting archaeological information about an intensive Caddo settlement that was apparently occupied at least 600-700 years ago, if not longer. Additional archaeological work is planned at the Crabb site should time and money become available to conduct more work at this significant site, but we believe it is important for future Caddo archaeological researchers that we make available now the archaeological information that has been obtained to date from the site

Hubbard v. Boelt: The Fireman\u27s Rule Extended

The California Supreme Court, in Hubbard v. Boelt, extended the reach of the fireman\u27s rule to bar a suit brought by a policeman who was injured by the willful and wanton conduct of a speeding motor is while pursuing that motorist. This is an important development in tort law because, traditionally, the fireman\u27s rule had only been applied to bar suits by firemen and policemen who were injured by the negligent conduct of another which was the cause of their presence at the scene. This author suggests that the majority\u27s rationale underlying this extension was flawed because of the fundamental difference between negligent conduct and willful and wanton conduct. Even if the majority\u27s logic was correct the rule should not have been applied in this case. Two of the reasons for this, which the dissent pointed out are the two independent acts of misconduct by the defendant, one negligent and one willful and wanton, and that the policeman seemed to be a member of a statutorily protected class. Finally, the author looks to other jurisdictions and finds that the fireman\u27s rule has never been applied in cases where a policeman is injured while pursuing a speeding motorist. Instead, the cases had always been decided on the general principles of negligence

Baehr v. Lewin: Hawaii Takes a Tentative Step to Legalize Same-Sex Marriage

In Baehr v. Lewin, the Supreme Court of Hawaii sparked a controversy that has potential nationwide implications. The court held that three same-sex couples were entitled to an evidentiary hearing to determine if the State can demonstrate that denying the couples the right to marry under the Hawaii Marriage Law furthers compelling state interests. If the State fails its burden, it can no longer refuse marriage licenses to couples merely on the basis that they are of the same sex. Should this occur, gay marriages will become legal in Hawaii

Ground State of the Easy-Axis Rare-Earth Kagom\'e Langasite Pr3_3Ga5_5SiO14_{14}

We report muon spin relaxation ($\mu$SR) and $^{69,71}$Ga nuclear quadrupolar resonance (NQR) local-probe investigations of the kagom\'e compound Pr$_3$Ga$_5$SiO$_{14}$. Small quasi-static random internal fields develop below 40 K and persist down to our base temperature of 21 mK. They originate from hyperfine-enhanced $^{141}$Pr nuclear magnetism which requires a non-magnetic Pr$^{3+}$ crystal-field (CF) ground state. Besides, we observe a broad maximum of the relaxation rate at $\simeq 10$ K which we attribute to the population of the first excited magnetic CF level. Our results yield a Van-Vleck paramagnet picture, at variance with the formerly proposed spin-liquid ground state.Comment: minor change

Single domain magnetic helicity and triangular chirality in structurally enantiopure Ba3NbFe3Si2O14

A novel doubly chiral magnetic order is found out in the structurally chiral langasite compound Ba$_3$NbFe$_3$Si$_2$O$_{14}$. The magnetic moments are distributed over planar frustrated triangular lattices of triangle units. On each of these they form the same triangular configuration. This ferro-chiral arrangement is helically modulated from plane to plane. Unpolarized neutron scattering on a single crystal associated with spherical neutron polarimetry proved that a single triangular chirality together with a single helicity is stabilized in an enantiopure crystal. A mean field analysis allows discerning the relevance on this selection of a twist in the plane to plane supersuperexchange paths

Subsonic Ultra Green Aircraft Research: Phase 2

This report summarizes the hybrid electric concept design, analysis, and modeling work accomplished by the Boeing Subsonic Ultra Green Aircraft Research (SUGAR) team, consisting of Boeing Research and Technology, Boeing Commercial Airplanes, General Electric, and Georgia Tech.Performance and sizing tasks were conducted for hybrid electric versions of a conventional tube-and-wing aircraft and a hybrid wing body. The high wing Truss Braced Wing (TBW) SUGAR Volt was updated based on results from the TBW work (documented separately) and new engine performance models. Energy cost and acoustic analyses were conducted and technology roadmaps were updated for hybrid electric and battery technology. NOx emissions were calculated for landing and takeoff (LTO) and cruise. NPSS models were developed for hybrid electric components and tested using an integrated analysis of superconducting and non-superconducting hybrid electric engines. The hybrid electric SUGAR Volt was shown to produce significant emissions and fuel burn reductions beyond those achieved by the conventionally powered SUGAR High and was able to meet the NASA goals for fuel burn. Total energy utilization was not decreased but reduced energy cost can be achieved for some scenarios. The team was not able to identify a technology development path to meet NASA's noise goal

Subsonic Ultra Green Aircraft Research

This Final Report summarizes the work accomplished by the Boeing Subsonic Ultra Green Aircraft Research (SUGAR) team in Phase 1, which includes the time period of October 2008 through March 2010. The team consisted of Boeing Research and Technology, Boeing Commercial Airplanes, General Electric, and Georgia Tech. The team completed the development of a comprehensive future scenario for world-wide commercial aviation, selected baseline and advanced configurations for detailed study, generated technology suites for each configuration, conducted detailed performance analysis, calculated noise and emissions, assessed technology risks, and developed technology roadmaps. Five concepts were evaluated in detail: 2008 baseline, N+3 reference, N+3 high span strut braced wing, N+3 gas turbine battery electric concept, and N+3 hybrid wing body. A wide portfolio of technologies was identified to address the NASA N+3 goals. Significant improvements in air traffic management, aerodynamics, materials and structures, aircraft systems, propulsion, and acoustics are needed. Recommendations for Phase 2 concept and technology projects have been identified

Subsonic Ultra Green Aircraft Research

This report summarizes the Truss Braced Wing (TBW) work accomplished by the Boeing Subsonic Ultra Green Aircraft Research (SUGAR) team, consisting of Boeing Research and Technology, Boeing Commercial Airplanes, General Electric, Georgia Tech, Virginia Tech, NextGen Aeronautics, and Microcraft. A multi-disciplinary optimization (MDO) environment defined the geometry that was further refined for the updated SUGAR High TBW configuration. Airfoil shapes were tested in the NASA TCT facility, and an aeroelastic model was tested in the NASA TDT facility. Flutter suppression was successfully demonstrated using control laws derived from test system ID data and analysis models. Aeroelastic impacts for the TBW design are manageable and smaller than assumed in Phase I. Flutter analysis of TBW designs need to include pre-load and large displacement non-linear effects to obtain a reasonable match to test data. With the updated performance and sizing, fuel burn and energy use is reduced by 54% compared to the SUGAR Free current technology Baseline (Goal 60%). Use of the unducted fan version of the engine reduces fuel burn and energy by 56% compared to the Baseline. Technology development roadmaps were updated, and an airport compatibility analysis established feasibility of a folding wing aircraft at existing airports