A thin film process using ECR-ion beam sputtering with ultra pure (99.999999%) copper target was investigated for improving transportation properties in the film. The electric resistivity of the thin film was 40% lower than that of using a commercial-grade purity target. And the optical qualities evaluated by the transmission and reflection spectrum measurements were also indicate slower relaxa...

In this paper, the correlation of reflection loss measured by an ultrasonic shear wave reflection method and the microstructure in cement-based material is investigated. Three cement pastes (Portland cement type I) with different water-cement ratios (0.35, 0.50 and 0.60) cured at 25 °C were examined. The ultrasonic shear wave reflection factor (WRF) was measured by the wave reflection technique...

A major program to denionstrate the feasibility of direct-drive laser fusion is underway at LLE. The overall goal of this program is to develop an understanding of target physics at the 30-kJ level that will allow the performance of direct-drive capsules designed for use with the National Ignition Facility (NIF) at the 1 to 2-MJ level to be predicted with confidence. The majority of the experim...

Digital personal lifelogs (PLs) enable many artifacts from a person’s life to be automatically stored in a digital archive. These data sets can contain a wealth of potentially valuable information describing events from an individual’s life. A key challenge for lifelog technologies is how to develop scenarios and applications which enable people to interact with these vast heterogeneous data so...

Generation of elevation maps of the seafloor is an important component of any autonomous system designed to navigate underwater. Because of its long range, sonar is the sensing medium of choice for underwater navigation. However, sonar systems designed to directly generate 3D images are generally complex or have low resolution. For these reasons, techniques that generate 3D elevation maps from ...

Millimeter-wave (MMW) radiation characteristics of solid targets are very complicated, and this paper starts with the research on modeling and simulation of the simple solid metal target. On the basis of the optical property of MMW, the two-ray propagation (direct reflection and ground secondary reflection of the solid target surface) is analyzed by means of the ray tracing theory in the geomet...

a foreign language teaching method is supposed to take into account the real communicative needs of the foreign language learner. using literary texts is a suitable way not only to teach a foreign language but to consider particular facts that relate to human and cultural needs of learners. using the humanistic-oriented literary texts as an authentic document in the foreign language course allo...

BACKGROUND Initial therapy appointments have high nonattendance rates yet the reasons remain poorly understood. AIMS This study aimed to identify positive and negative attitudes towards therapy that predicted initial attendance, informed by a perceptual control theory account of approach-avoidance conflicts in help-seeking. METHOD A prospective study was conducted within a low intensity CBT...

We study the uniqueness and accuracy of the numerical solution of the problem of reconstruction of the shape and trajectory of a reflecting obstacle moving in an inhomogeneous medium from travel times, start and end points, and initial angles of ultrasonic rays reflecting at the obstacle. The speed of sound in the domain when there is no obstacle present is known and provided as an input parame...