Open Access. Powered by Scholars. Published by Universities.®
- Discipline
- Keyword
-
- Complex oxides (1)
- Crystal structure (1)
- Ferroelectric (1)
- Free-space optical communications (1)
- Graphical approach (1)
-
- Hierachical structure (1)
- High-speed data communications (1)
- High-speed train communications (1)
- Large scale data (1)
- Logically related hypotheses (1)
- Mobile communications (1)
- Multiferroic (1)
- Multiple hypotheses testing (1)
- Nano material (1)
- Optical wireless communications (1)
- Phase transition (1)
- Selective inference (1)
- Terahertz band (1)
- Vehicular networks (1)
- Wireless communication (1)
- Publication
Articles 1 - 4 of 4
Full-Text Articles in Physics
High-Speed Data Communications For Vehicular Networks Using Free-Space Optical Communications, Yagiz Kaymak
High-Speed Data Communications For Vehicular Networks Using Free-Space Optical Communications, Yagiz Kaymak
Dissertations
The demand for high-speed Internet access for vehicles, such as high-speed trains (HSTs) and cars, is on the rise. Several Internet access technologies that use radio frequency are being considered for vehicular networking. Radio-frequency communications technologies cannot provide high data rates due to interference, bandwidth limitations, and the inherent limited data rates of radio technology. Free-space optical communications (FSOC) is an alternative approach and a line-of-sight (LOS) technology that uses modulated light to transfer data between two free-space optical (FSO) transceivers. FSOC systems for vehicular networks are expected to provide data rates in the range of Gbps for stationary and …
Fwer Controlling Procedures In Simultaneous And Selective Inference, Li Yu
Fwer Controlling Procedures In Simultaneous And Selective Inference, Li Yu
Dissertations
With increasing complexity of research objectives in clinical trials, a variety of relatively complex and less intuitive multiple testing procedures (MTPs) have been developed and applied in clinical data analysis. In order to make testing strategies more explicit and intuitive to communicate with non-statisticians, several flexible and powerful graphical approaches have recently been introduced in the literature for developing and visualizing newer MTPs. Nevertheless, some theoretical as well as methodological issues still remain to be fully addressed. This dissertation addresses several important issues arising in graphical approaches and related selective inference problems. It consists of three parts.
In the first …
Structural Studies To Determine The Mechanisms Supporting Multiferroic And Ferroelectric Properties Of Complex Oxides, Han Zhang
Dissertations
Multiferroics are a class of materials which possess both magnetic and electrical polarization with possible coupling between them. They show promise to enable new sensors and data storage devices with novel features, such as the possibility of writing polarization bits with magnetic fields at low power. The coexisting magnetic and ferroelectric order parameters are usually weakly coupled, preventing practical use. The development and study of new classes of materials with large magnetoelectric couplings is of high importance. Understanding the structure of these materials is key to this effort.
As one class of these systems, the RX3(BO3)4 has …
Passive Planar Terahertz Retroreflectors, Dhruvkumar Desai
Passive Planar Terahertz Retroreflectors, Dhruvkumar Desai
Theses
As the application of the Terahertz (THz) band (0.1 - 10 THz) is investigated in various settings, wireless communication stands out as an important frontier to explore. The benefits of increased bandwidth and data rates it promises will only be realized if new technology is developed to support it. Specifically, since THz wireless communication links are typically line-of-sight (LoS), the LoS can be blocked by moving obstacles, thereby requiring alternative link paths. One proposed solution for indoor wireless communications involves systems of steerable antennas, reflective "wallpaper", and steerable mirrors which would redirect THz beams around a blocking obstacle.
As an …