Last December, a pilot set out to fly a full-scale replica of a machine that had been flown a hundred years earlier. The flight was planned as part of a centennial celebration of the first sustained human-piloted, powered, controlled flight. The attempt, made last December 17th, took place at the same spot -Kill Devil Hills, North Carolina -where Orville Wright made a successful, historically s...

We study the spectral and thermodynamic properties of inhomogeneous d-wave superconductors within a model where the inhomogeneity originates from atomic-scale pair disorder. This assumption has been shown to be consistent with the small charge and large gap modulations observed by scanning tunneling spectroscopy on Bi2Sr2CaCu2O8+x. Here we calculate the specific heat within the same model, and ...

The unique temperature-dependent solubility of liquid crystalline poly(2,5-bis(3-alkylthiophen-2-yl)thieno[3,2b]thiophene) (PBTTT) enabled us to construct the first bilayer-bulk-heterojunction devices based on a PBTTT: PCBM (1:2)/MDMO-PPV:[70]PCBM (1:4) active layer. The bilayer device exhibited an extended optical absorption over the solar spectrum and concentration gradient that enhanced char...

We investigate the effective stress-strain behavior of cellular elastomers, structured with a periodic pattern of elliptic holes by means of full scale simulations under small deformations. First, we show that the elastic response behaves non trivially with the pore geometry. In particular, we show that auxetic and anistropic responses arise for a broad range of parameters, when the microstruct...

We have investigated inorganic cluster-surfactant materials to better understand the structural evolution of these phases as the surfactant:cluster ratio increases above 4:1 and the cluster charge increases beyond -4. Our studies suggest that both ordering of the surfactant molecules into bilayers as well as the cluster charge are the primary influences on the hybrid cluster-surfactant phase st...

Current NDT techniques are capable of identifying sub millimetre defects in structural materials. Nanoscale NDT however, necessitates development of new techniques for identifying and sizing surface and more importantly subsurface imperfections. The reliability of micro and especially nano scale components heavily depends on such new developments. This paper presents an attempt to explore the p...

This paper investigates urban bioclimatic interventions in the central area of a coastal medium-sized city in Greece. Two urban blocks typical of the urban fabric of the city center and a neighborhood of 38 urban blocks were selected. Different proposed Bioclimatic Renewal Scenarios were investigated through microclimatic simulations using the micro-scale numerical model, ENVI-met. The simulati...

Until very recently there has been an anomaly in the assessment of the intensity of pediatric pain. The most commonly used self-report scale is the one that, up to now, has had the smallest amount of supportive research. This scale, the numerical rating scale (NRS), is administered by asking patients to say a number, usually from 0 to 10, to express the intensity of their pain. Compared with we...

Alaska's forest resource and its competitive position in the international timber market have important implications for a variety of market strategies and future research objectives. While the timber industry is limited by numerous infrastructure and economy of scale factors, the state does possess high quality raw materials. In order to evaluate future opportunities it is important to fully a...

Tremendous potential exists for the growth of metal finishing industry in this century through the development of processes that are either environmentally friendly or are applicable at the nano scale. In the CEE the theoretical and experimental studies are performed to achieve such coatings. Nanostructured alloys and innovative composite materials were developed through adaptation of existing ...