Results 91 to 100 of about 2,663,512 (375)
The Emerging 4D Printing of Shape‐Memory Thermomorphs for Self‐Adaptative Biomedical Implants
Advanced Functional Materials, EarlyView.4D printing enables the creation of smart implants that adapt to changing conditions in the human body over time. At the core of this technology are shape‐memory thermomorphs (SMTMs). This review offers an in‐depth analysis of 4D printing with SMTMs, emphasizing the latest advancements in smart materials, stimuli, programming principles, and their ...
Aixiang Ding, Fang Tang, Eben Alsberg
wiley +1 more source
Definition of a parameter for a typical specific absorption rate under real boundary conditions of cellular phones in a GSM networkd [PDF]
Advances in Radio Science, 2003 Using cellular phones the specific absorption rate (SAR) as a physical value must observe established and internationally defined levels to guarantee human protection.
D. Gerhardt
doaj
Mobile satellite services for public safety, disaster mitigation and disaster medicine [PDF]
Between 1967 and 1987 nearly three million lives were lost and property damage of $25 to $100 billion resulted form natural disasters that adversely affected more than 829 million people.
Freibaum, Jerry
core +1 more source
Advanced Functional Materials, EarlyView.A materials and device design concept that comprises a self‐assembled ultra‐thin epitaxial ion‐transporting layer, an amorphous oxide overcoat oxygen‐blocking layer, and a partial filament formed during an electroforming step is proposed for low‐current multilevel resistive switching devices.
Ming Xiao +17 more
wiley +1 more source
Sensors, 2015 In this paper, we introduce a novel smartphone framework called VisitSense that automatically detects and predicts a smartphone user’s place visits from ambient radio to enable behavioral targeting for mobile ads in large shopping malls.
Byoungjip Kim +3 more
doaj +1 more source
An Adaptive Energy Saving Algorithm for an RSSI-Based Localization System in Mobile Radio Sensors. [PDF]
Sensors (Basel), 2021 Olesiński A, Piotrowski Z.
europepmc +1 more source
WRC-07: the Technological and Market Pressures for Flexible Spectrum Access [PDF]
By examining the preparations for the 2007 ITU World Radio Conference (WRC-07) and associated developments this paper identifies practical examples of the market and technological pressures contributing towards a more liberalised approach to spectrum ...
Sims, Martin
core +1 more source
Adaptive authentication and key agreement mechanism for future cellular systems [PDF]
, 2006 Since the radio medium can be accessed by anyone, authentication of users is a very important element of a mobile network. Nowadays, in GSM/GPRS a challenge response protocol is used to authenticate the user to the mobile network.
Dimitriou, T., Komninos, N.
core
Advanced Functional Materials, EarlyView.A wideband tunable electrochromic device with dynamic thermal emissivity control is demonstrated. The system enables adaptive heat regulation via electrochemically modulated silver deposition, achieving efficient cooling and heating states. The flexible design ensures mechanical robustness under bending conditions, making it promising for portable and ...
Jiawei Liang +10 more
wiley +1 more source
Cognitive Radio Made Practical: Forward-Lookingness and Calculated Competition
IEEE Access, 2019 Cognitive radio is more than just radio environment awareness, and more importantly, has the ability to interact with the environment in the best way possible.
Jie Ren, Kai-Kit Wong
doaj +1 more source