Results 151 to 160 of about 1,897,069 (281)

Q-learning-based UAV-mounted base station positioning in a disaster scenario for connectivity to the users located at unknown positions. [PDF]

J Supercomput, 2023
Mandloi D, Arya R.
europepmc   +1 more source

Quantum Dots and Perovskites‐Based Physically Unclonable Functions for Binary and Ternary Keys via Optical‐to‐Electrical Conversion

Advanced Functional Materials, EarlyView.
This study investigates optoelectronic PUFs that improve on traditional optical and electrical PUFs. The absorber materials are randomly coated through spray coating, ligand exchange, and dynamic spin coating. Incident light generates wavelength‐dependent binary multikey and enhances security ternary keys, approaching near‐ideal inter‐ and intra ...
Hanseok Seo, Taesung Park, Awais Ali, Byung Ku Jung, Young Kyun Choi, Junhyeok Park, Soong Ju Oh   +6 more
wiley   +1 more source

Direct Laser Ablation of 2D Material Films for Fabricating Multi‐Functional Flexible and Transparent Devices

Advanced Functional Materials, EarlyView.
A scalable method for direct laser patterning of 2D films on transparent substrates like polycarbonate and glass is presented. This technique eliminates the need for photolithography and solvents, enabling the fabrication of functional devices like strain gauges, supercapacitors, and photodetector arrays.
Yigit Sozen, Yu Kyoung Ryu, Javier Martinez, Andres Castellanos‐Gomez   +3 more
wiley   +1 more source

Multi-Beam Conformal Array Antenna Based on Highly Conductive Graphene Films for 5G Micro Base Station Applications. [PDF]

Sensors (Basel), 2022
Zheng B, Li X, Rao X, Li N.
europepmc   +1 more source

A spectrum efficient cellular base-station antenna architecture [PDF]

, 1992
Beach, MA, McGeehan, JP, Swales, SC
core   +1 more source

Enhancing Mechanical Deformability of Rigid Conjugated Polymers through Functional Additive‐Induced Persistence Length Modulation

Advanced Functional Materials, EarlyView.
This study demonstrates a molecular strategy to enhance the stretchability of conjugated polymers by incorporating plasticizing molecular additives (PMAs). PMAs reduce the persistence length and promote chain entanglement, enabling deformable thin films with preserved electrical performance. A systematic analysis combining rheology, neutron scattering,
Sein Chung, Seung Hyun Kim, Sanghyo Kim, Eunsol Ok, Byeong Jin Kim, Jimin Kim, Jiyeong Shin, Taehun Chung, Jong Dae Jang, Siyoung Lee, Boseok Kang, Kilwon Cho   +11 more
wiley   +1 more source

A Novel Dual-Polarized Magnetoelectric Dipole Antenna and Its Array for LTE and 5G Sub-6 GHz Base Station Applications. [PDF]

Entropy (Basel), 2023
Song Z, Qi J.
europepmc   +1 more source

Novel Less Toxic, Lymphoid Tissue‐Targeted Lipid Nanoparticles Containing a Vitamin B5‐Derived Ionizable Lipid for mRNA Vaccine Delivery

Advanced Healthcare Materials, Volume 14, Issue 7, March 14, 2025.
The top‐performing lipid nanoparticle, incorporating a novel ionizable lipid derived from vitamin B5, demonstrates high mRNA transfection efficiency, low toxicity, favorable stability, targeted delivery to lymphoid tissues, and high immunogenicity, showing promise as a carrier for mRNA vaccines for infectious diseases and cancer.
Soyeon Yoo, Muhammad Faisal, Seo‐Hyeon Bae, Kounghwa Youn, Hyo‐Jung Park, Sung Pil Kwon, Il Kwon Hwang, Jisun Lee, Hyeong Jun Kim, Jae‐Hwan Nam, Gyochang Keum, Eun‐Kyoung Bang   +11 more
wiley   +1 more source

Evaluation of 5G Positioning Performance Based on UTDoA, AoA and Base-Station Selective Exclusion. [PDF]

Sensors (Basel), 2021
Xhafa A, Del Peral-Rosado JA, López-Salcedo JA, Seco-Granados G.   +3 more
europepmc   +1 more source

Estimating Potential Demand and Customers' Perception of Service Value in a Two-station Service System [PDF]

arXiv
The potential demand in the market and customers' perception of service value are crucial factors in pricing strategies, resource allocation, and other operational decisions. However, this information is typically private and not readily accessible. In this paper, we analyze a service system operating across two stations, each with its own customer ...
arxiv