Conceptual design study of a 1985 commercial STOL tilt rotor transport

Results of conceptual engineering design studies of a STOL tilt rotor commercial aircraft for the 1985 time frame are presented. The details of aircraft size, performance, flying qualities, noise, and cost are included. The savings in terms of fuel economy resulting from STOL operations compared with VTOL vehicles are determined

Fluent temporal logic for discrete-time event-based models

Fluent model checking is an automated technique for verifying that an event-based operational model satisfies some state-based declarative properties. The link between the event-based and state-based formalisms is defined through fluents which are state predicates whose value are determined by the occurrences of initiating and terminating events that make the fluents values become true or false, respectively. The existing fluent temporal logic is convenient for reasoning about untimed event-based models but difficult to use for timed models. The paper extends fluent temporal logic with temporal operators for modelling timed properties of discrete-time event-based models. It presents two approaches that differ on whether the properties model the system state after the occurrence of each event or at a fixed time rate. Model checking of timed properties is made possible by translating them into the existing untimed framework. Copyright 2005 ACM

Multisensory training for postural sway control in non-injured elderly females

Elderly adults demonstrate increased postural sway, which may ultimately lead to falls. The present study used a randomized controlled intervention to investigate whether the three-week multisensory training program lead to a decreased postural sway. A total of 24 non-injured elderly females (60-80 years) volunteered to participate. They were randomly assigned to either a training group (ETG) who received one hour of training twice weekly for three weeks or to a control group (ECG) who received no training. At post-training, the results showed significant improvement in the trained ETG when compared to the untrained ECG for all three postural sway measures for all six training factors. The findings demonstrated that the trained ETG improved in their total Berg Balance Test (BBT) scores indicated that the training program successfully improved postural sway control for non-injured elderly females.Keywords: multisensory training, postural sway control, balance ability, visual input;vestibular input, somatosensory inpu

The Volatile Composition of the Split Ecliptic comet 73P/Schwassmann-Wachmann 3: A Comparison of Fragments C and B

The composition of fragments C and B of the Jupiter-family comet 73P/Schwassmann-Wachmann 3 (SW3) was investigated in early April of 2006 at IR wavelengths using high-dispersion echelle spectroscopy. Both fragments were depleted in ethane, and C was depleted in most forms of volatile carbon. In particular, fragment C shows a severe depletion of CH_(3)OH but a "normal" abundance of HCN (which has a similar volatility). Thermal processing is a possible explanation, but since fragment B is perhaps sublimating fresher material because of the frequent outbursts and fragmentation, the observed depletions might have cosmogonic implications. The chemistry of the volatile ices in SW3, like in the Oort Cloud comet C/1999 S4 (LINEAR), may be associated with sublimation of icy mantles from precometary grains followed by subsequent gas-phase chemistry and recondensation

Aerosol physical properties in the stratosphere (APPS) radiometer design

The measurement concepts and radiometer design developed to obtain earth-limb spectral radiance measurements for the Aerosol Physical Properties in the Stratosphere (APPS) measurement program are presented. The measurements made by a radiometer of this design can be inverted to yield vertical profiles of Rayleigh scatterers, ozone, nitrogen dioxide, aerosol extinction, and aerosol physical properties, including a Junge size-distribution parameter, and a real and imaginary index of refraction. The radiometer design provides the capacity for remote sensing of stratospheric constituents from space on platforms such as the space shuttle and satellites, and therefore provides for global measurements on a daily basis

Fitting Beef Cattle into Central Texas Farming.

16 p

Goats Pay for Clearing Grand Prairie Rangelands.

8 p

Inductive learning spatial attention

This paper investigates the automatic induction of spatial attention from the visual observation of objects manipulated on a table top. In this work, space is represented in terms of a novel observer-object relative reference system, named Local Cardinal System, defined upon the local neighbourhood of objects on the table. We present results of applying the proposed methodology on five distinct scenarios involving the construction of spatial patterns of coloured blocks

Quantitative Measurement of Marine and Fungal Biofilm Dynamics: Insights into Ecological and Biomedical Implications

The formation of biofilms by marine and fungal organisms, including four marine Vibrio isolates and fungal isolates of Candida and Rhodotorula, represents complex ecosystems with significant implications for ecology and biomedicine. This study aimed to enhance the understanding of biofilm dynamics through accurate and comprehensive measurement techniques. Following inoculation and growth in liquid media, biofilms were developed in 96-well microplates and stained with crystal violet. The stained biofilms were then solubilized with isopropanol, and optical density measurements were used to quantify the absorbance relative to biofilm concentration. Notably, optical density readings indicated an increased amount of fungal biofilm formation when compared to marine bacterial biofilms, with statistical significance (p\u3c0.05). This finding underscores the differential biofilm formation capacities among marine and fungal isolates, highlighting the importance of advanced quantitative techniques in revealing the structure, function, and ecological significance of biofilms. The study suggests potential applications in environmental and health-related fields and calls for further research into the molecular mechanisms underlying biofilm resilience and pathogenicity. Keywords: Biofilms, Marine Vibrio, Candida, Rhodotorula, Crystal Violet, Optical Density, Comparative Analysi