Results 71 to 80 of about 6,667,869 (236)

Overcoming the Phase Discontinuity Problem in RIS Optimization: A Robust and Scalable Phase‐Aware Deep Regression Framework via Hybrid CNN–LSTM Architecture

Advanced Intelligent Systems, EarlyView.
The phase discontinuity problem—where the cyclic nature of phase angles causes catastrophic errors near the ±π boundary—is a fundamental obstacle in learning‐based reconfigurable intelligent surface (RIS) optimization. A phase‐aware hybrid CNN–LSTM framework resolves this by decomposing phase predictions into sine–cosine components, mapping circular ...
Seda Savaşçı Şen, Ali Çalhan, Murtaza Cicioğlu, Oğuzhan Demiryürek   +3 more
wiley   +1 more source

Physics‐Grounded Probabilistic Bits for Hardware‐Efficient Intelligent Inference and Optimization

Advanced Intelligent Systems, EarlyView.
Si–SiNx interface traps are harnessed as a complementary metal–oxide–semiconductor‐compatible source of controllable randomness for probabilistic bits. Pulse‐width‐programmed stochastic capture converts nanoscale defect dynamics into Boltzmann‐consistent binary outputs, while a physics‐based Simulation Program with Integrated Circuit Emphasis model ...
Dokyoung Lee, Jun‐Young Park, Joon‐Kyu Han, Sungho Kim   +3 more
wiley   +1 more source

Ultralow‐Power Floating‐Gate InGaZnO Content‐Addressable Memory for Wearable Electrocardiogram Anomaly Detection

Advanced Intelligent Systems, EarlyView.
This study introduces a subthreshold in‐memory anomaly detection architecture for wearable ECG monitoring using floating‐gate IGZO content‐addressable memories on a flexible substrate. Area‐engineered coupling provides a high subthreshold slope, while subthreshold operation realizes intrinsic exponential distance evaluation and linear voltage sensing ...
Hyung‐Jun Noh, Sunyeol Bae, Yumin Yun, Junhyeong Park, Soo‐Yeon Lee   +4 more
wiley   +1 more source

The Open DAC 2023 Dataset and Challenges for Sorbent Discovery in Direct Air Capture [PDF]

, 2023
New methods for carbon dioxide removal are urgently needed to combat global climate change. Direct air capture (DAC) is an emerging technology to capture carbon dioxide directly from ambient air.
Sholl, David S., Yu, Xiaohan, Ulissi, Zachary, Sriram, Anuroop, Choi, Sihoon, Uyttendaele, Matt, Das, Abhishek, Medford, Andrew J., Brabson, Logan M.   +8 more
core   +1 more source

Prediction of CO2 capture performance of a direct air capture unit under representative atmospheric flow conditions using large eddy simulation

Carbon Capture Science & Technology
The removal of carbon dioxide (CO2) from the atmosphere using direct air capture (DAC) is crucial in achieving the net-zero emissions target and combating global warming.
Esmaeel Eftekharian, Ali Kiani, Vassili Kitsios, Ashok K. Luhar, Paul Feron, Aaron W. Thornton, Kathryn M. Emmerson   +6 more
doaj   +1 more source

The Open DAC 2023 Dataset and Challenges for Sorbent Discovery in Direct Air Capture

ACS Central Science
New methods for carbon dioxide removal are urgently needed to combat global climate change. Direct air capture (DAC) is an emerging technology to capture carbon dioxide directly from ambient air. Metal-organic frameworks (MOFs) have been widely studied as potentially customizable adsorbents for DAC.
Anuroop Sriram, Sihoon Choi, Xiaohan Yu, Logan M. Brabson, Abhishek Das, Zachary Ulissi, Matt Uyttendaele, Andrew J. Medford, David S. Sholl   +8 more
openaire   +3 more sources

Review of Direct Air Capture Systems Powered by Nuclear Energy

Energies
Direct air capture (DAC) is a carbon removal technology that selectively extracts CO2 from ambient air, where it exists at trace concentrations of approximately 400 ppm (0.04%), using chemical or physical separation processes.
Taejun Song, Joohyung Jung, Seongmin Son
doaj   +1 more source

Advancements in CO2 Capture Technologies: A Review of Amine Absorption and Alternative Methods for Post‐Combustion Integration

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Carbon capture technologies are poised to become one of the primary focuses regarding the achievement of net‐zero emissions by the year 2050. In these technologies, particular attention is given to post‐combustion CO2 capture, which is more easily implemented at existing power stations and other industries.
Satyajit Mukherjee, Ashish Kumar, Mayurkumar P. Patil, Rohit B. Meshram   +3 more
wiley   +1 more source

Utilizing CO2 as a strategy to scale up direct air capture may face fewer short-term barriers than directly storing CO2

Environmental Research Letters
Direct air capture (DAC) is increasingly recognized as a necessary puzzle piece to achieve the Paris climate targets. However, the current high cost and energy intensity of DAC act as a barrier.
Nicoletta Brazzola, Christian Moretti, Katrin Sievert, Anthony Patt, Johan Lilliestam   +4 more
doaj   +1 more source

Sodium cation exchanged zeolites for direct air capture of CO2

Applied Surface Science Advances
Direct air capture technology requires investigating materials that can capture carbon dioxide inexpensively and efficiently, considering their performance under real atmospheric conditions.
Do Yeong Kim, Wo Bin Bae, Haehyun Min, Kyeong-Hun Ryu, Sungjoon Kweon, Linh Mai Tran, Young Jin Kim, Min Bum Park, Sung Bong Kang   +8 more
doaj   +1 more source