Light attenuation

UAV (Unmanned Aerial Vehicle) has become an essential part of 6G. UAVs can make it easier to have a LOS (light-of-sight) connection and quicker to launch a network. However, backhaul connection and energy limitations are two main reasons that slow down UAV usage.

7p viannee 02-08-2023 10 4   Download

This paper reports effects of ultraviolet (UV) light radiation on the physicochemical, electrical and mechanical properties of low-density polyethylene (LDPE) cable insulating materials. Changes in structural and morphological properties of UV-aged samples were characterized by various analytical methods such as attenuated total reflection Fourier transform infrared spectroscopy (ATRFTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM).

12p lyhuyenthu 31-01-2023 7 2   Download

There is growing interest in rock surface burial and exposure luminescence dating for use in Quaternary science and in archaeology. Such methods have enormous potential both in increasing the range of sedimentary contexts that can be dated, and improving the accuracy and the precision of dating within those contexts.

7p vironald 15-12-2022 16 3   Download

Optically stimulated luminescence (OSL) depth profiling utilizes an OSL-at-depth signal to extrapolate an exposure age from rock surfaces. Exposure ages are commonly obtained by fitting the forms of luminescence depth profiles, which depend on parameter estimates of light attenuation and defined rates of luminescence bleaching.

8p vironald 15-12-2022 6 3   Download

Lecture Computer graphics - Lesson 30: Mathematics of lightning and shading (Part 4). The main topics covered in this chapter include: the phong’s specular light equation, phong's equation for specular lighting, the lighting equation, light attenuation, oren—nayar diffuse reflection,...

96p youzhangjing_1909 28-04-2022 12 4   Download

This project examines whether the fair value information under SFAS ( 157 affects corporate credit risk. Moreover, I further investigate whether managers change their risk management behavior driven by fair value measurement. Finally, in light of the evidence offered by the prior studies indicating that better corporate governance will lead to better risk management, this study expects that the relationship between fair value information and risk management may be moderated by corporate governance.

20p trinhthamhodang2 21-01-2020 30 2   Download

Continuous monitoring provides real-time data which is helpful for measuring air quality; however, these systems are often very expensive, especially for developing countries such as Vietnam. The use of low-cost sensors for monitoring air pollution is a new approach in Vietnam and this study assesses the utility of low-cost, light-scattering-based, particulate sensors for measuring PM2.5 concentrations in Ho Chi Minh City.

5p viminotaur2711 29-10-2019 28 0   Download

This paper reviews the sources of attenuation, noise and distortion encountered when communicating over AC power wiring. Various technologies which have been used to address these challenges, such as spread spectrum and digital signal processing, are then examined in light of the known channel conditions. Mời các bạn cùng tìm hiểu và tham khảo nội dung thông tin tài liệu.

17p huyen06281982 15-10-2015 47 3   Download

The optical fibre technology is one of the hop topics developed at the beginning of the 21th century and could do many services for application dealing with lighting, sensing and communicating systems. Many improvements have been carried out since 30 years to reduce the fibre attenuation and to improve the fibre performance. Nowadays, new applications have been developed over the scientific community and this book titled “Optical Fibre, New Developments” fits into this paradigm.

0p 123859674 30-06-2012 80 7   Download

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Wertheim cung cấp cho các bạn kiến thức về ngành y đề tài: Premature terminator analysis sheds light on a hidden world of bacterial transcriptional attenuation...

17p thulanh22 20-11-2011 35 1   Download