The viability of using reflection loss measurements for the determination of sediment parameters and the predictions of broadband acoustic behavior is studied as a function of frequency for a dispersive ocean bottom. For this study, a deterministic set of reflection loss values from an idealized dispersive sediment is calculated as a function of grazing angle over a large frequency band 100 Hz–...

The near infrared reflection peak in some frogs has been speculated to be either for enhancing crypticity, or to help them with thermoregulation. The theoretical background for the thermoregulatory processes has been established before, but little consideration has been given to the contribution from the frogs' reflection spectra differences. In this investigation, the reflection spectra from a...

In this paper, we study the possibility to use an amplitude hologram as a reflection-type collimating element to produce a plane wave in the compact antenna test range (CATR). So far, we have used holograms as transmissiontype elements only. The hologram studied here has a diameter of 600 mm and it operates at the frequency of 310 GHz. It is a computer-generated slot pattern etched on a thin me...

“Reflections on Gains and Losses: A 2×2×7 Experiment” by Antoni Bosch-Domènech and Joaquim Silvestre Universitat Pompeu Fabra and University of California, Davis. What determines risk attraction or aversion? We experimentally examine three factors: the gain-loss dichotomy, the probabilities (0.2 vs. 0.8), and the money at risk (7 amounts). We find that, for both gains and losses and for low and...

introduction: reflection is considered as a critical characteristic in professional competitions. despite propagation of reflection as an important educational issue and existence of several helpful patterns, instructions conducted by teachers to explaining and expanding of it, are very little. studies related to this topic were mainly performed in the field of nursing. therefore, we decided to...

Anisotropic Fe3O4 nanoparticle and a series of its graphene composites have been successfully prepared as high-frequency absorbers. The crystal structure, morphology and magnetic property of the samples were detailed characterized through X-ray diffractometer (XRD), transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM). The high-frequency absorbing performance of the co...

To enable 28 Gb/s transceiver operation, Xilinx has employed many innovative techniques for circuits, packaging and systems. Virtex®-7 HT FPGAs are designed to use Stacked Silicon Interconnect (SSI) technology that relies on an interposer built on low loss package substrate material. Channel loss, reflection loss and crosstalk noise are critical factors in determining system performance at this...

To obtain a high temperature-resistant microwave absorbing coating, an Al2O3–MoSi2/Cu composite coating was prepared by atmospheric plasma spraying. Compared with normal temperature environment, there are few reports on Cu as absorbent for coatings. Therefore, in this regard, wave property can be improved using absorbent. The microstructure of observed, and the dielectric properties high-temper...

Optical design, photon management, and energy conversion efficiency are investigated through numerical simulation of perovskite/silicon tandem solar cell using the single-diode model. A strong near-infrared reflectance roughly 60% is present in perovskite-based top cell. ZnO Si3N4 anti-reflection coating layers placed on surface perovskite layer silicon sub-cell respectively for management mini...