Results 91 to 100 of about 166,468,241 (292)

Research on cardiac image segmentation algorithm based on improved level set modeling

工程科学学报
In recent years, cardiac medical image segmentation using the variational level-set method has been widely applied in image processing. However, the uneven grayscale of images and the symbolic distance function in the gradient descent method lead to ...
Shuaishuai ZHANG, Ruixia LIU, Ke SHAN, Zhenhua GUO   +3 more
doaj   +1 more source

Drop‐Location‐Insensitive Droplet‐Based Electricity Generator Using Polydimethylsiloxane Slippery Covalently Attached Liquid Coatings

Advanced Science, EarlyView.
Drop‐location sensitivity remains a key barrier to practical droplet‐based electricity generators (DEGs). Here, a polydimethylsiloxane slippery covalently attached liquid (PDMS‐SCAL)‐coated interface promotes droplet sliding instead of splitting or bouncing, allowing stable electricity generation from randomly falling raindrops. The resulting PDMS‐SCAL‐
Jung Bin Yang, Donghyeon Yoo, Hideaki Teshima, Donghan Lee, Dongwhi Choi, Dong Rip Kim, Nenad Miljkovic   +6 more
wiley   +1 more source

An alternating-direction iteration method for Helmholtz problems [PDF]

, 1993
summary:An alternating-direction iterative procedure is described for a class of Helmholz-like problems. An algorithm for the selection of the iteration parameters is derived; the parameters are complex with some having positive real part and some ...
Hensley, Jeffrey L., Roberts, Jean E., Douglas, Jim   +2 more
core   +1 more source

Coexisting Volatile and Nonvolatile Switching in 3D ALD‐IGZO Vertical RRAM for Fully Hardware‐Based Wide Reservoir Computing

Advanced Science, EarlyView.
A conformal ALD‐IGZO vertical RRAM integrates volatile and nonvolatile switching within a compact 2F architecture. Before forming, tunable volatile dynamics provide fading‐memory reservoir states, while after forming, stable multilevel conductance modulation enables hardware readout.
Seeun Lee, Jaewon Park, Nawoon Kim, Seohyeon Ju, Seong‐Cheol Jang, Hyun‐Suk Kim, Sungjun Kim   +6 more
wiley   +1 more source

Alternating Cell Direction Implicit Method [PDF]

, 2015
Tez (Doktora) -- İstanbul Teknik Üniversitesi, Fen Bilimleri Enstitüsü, 2004Thesis (PhD) -- İstanbul Technical University, Institute of Science and Technology, 2004Bu çalışmada, “Değişen Ardışık Hücre Yönlü Kapalı Formülasyon – DAHYKF Yöntemi” isimli ...
Çete, Ali Ruhşen
core  

Machine Learning‐Driven Design of Multicomponent Bone Inorganic Matrix Mimicking Scaffolds for Osteogenesis Enhanced by Neurogenesis

Advanced Science, EarlyView.
Schematic illustration of development of experimental datasets and algorithm models, screening and preparation of the scaffolds and their applications in vivo. ABSTRACT Bone defects require materials with osteogenic, neurogenic, and angiogenic activity, yet designing such materials within high‐dimensional compositional spaces remains challenging. Here,
Kunlu Lin, Ying Yang, Chuyao Zhou, Hanyue Mao, Zhiquan Zhang, Libangxi Liu, Xiaoying Yu, Haoming Liu, Long Liu, Xiaoyan Wang   +9 more
wiley   +1 more source

A Dictionary Learning Method with Total Generalized Variation for MRI Reconstruction

International Journal of Biomedical Imaging, 2016
Reconstructing images from their noisy and incomplete measurements is always a challenge especially for medical MR image with important details and features.
Hongyang Lu, Jingbo Wei, Qiegen Liu, Yuhao Wang, Xiaohua Deng   +4 more
doaj   +1 more source

A computationally effective alternating direction method for the space and time fractional Bloch-Torrey equation in 3-D [PDF]

, 2012
The space and time fractional Bloch-Torrey equation (ST-FBTE) has been used to study anomalous diffusion in the human brain. Numerical methods for solving ST-FBTE in three-dimensions are computationally demanding.
Liu, Fawang, Turner, I., Burrage, Kevin, Turner, Ian, Yu, Q., Burrage, K., Yu, Qiang, Liu, F.   +7 more
core   +1 more source

Endothelial miR‐15a/16‐1 Regulation of SYNE1 Mediates Structural and Functional Recovery after Traumatic Brain Injury

Advanced Science, EarlyView.
Endothelial miR‐15a/16‐1 deletion promotes long‐term recovery after traumatic brain injury by restoring SYNE1 expression. Enhanced endothelial SYNE1 preserves vascular integrity, protects white and gray matter, and improves neurological function. The endothelial miR‐15a/16‐1–SYNE1 axis emerges as a key regulator of neurovascular repair and a potential ...
Shun Li, Na Qiu, Chao Zhou, Andrew Ni, Ping Sun, Jia‐Jun Liu, Xin‐Lei Huang, Tian‐Qing Xiong, Yu‐Chi Zhang, Hai‐Zhou Liu, Xiao‐Tao Xu, Rui Wang, Shi‐Qing Zhang, Yu‐Xin Zhang, Silvia Liu, C. Edward Dixon, Jun Chen, Ke‐Jie Yin   +17 more
wiley   +1 more source

High‐Power Hybrid Nanogenerator With Multi‐Degree‐of‐Freedom Mechanical Coupling for Harvesting Water Wave Energy

Advanced Science, EarlyView.
A high‐power hybrid nanogenerator (HP‐HNG) with multi‐degree‐of‐freedom mechanical coupling is reported, integrating multi‐directional wave energy for output to achieve 1 + 1 > 2 energy harvesting. The HP‐HNG achieves a peak output power of 0.764 W, corresponding to a peak power density of 127.303 W m−3. At a wave frequency of 1 Hz, the HP‐HNG delivers
Shuai Ding, Hua Zhai, Hao Gong, Xiao Long, Yuanzhuo Tian, Zhanyong Hong, Long Zheng, Xucong Wang, Xiangyu Chen, Zhong Lin Wang   +9 more
wiley   +1 more source