Pathological gait clustering in post-stroke patients using motion capture data.

Background: Analyzing the complex gait patterns of post-stroke patients with lower limb paralysis is essential for rehabilitation.

Research Question: Is it feasible to use the full joint-level kinematic features extracted from the motion capture data of patients directly to identify the optimal gait types that ensure high classification performance?

Methods: In this study, kinematic features were extracted from 111 gait cycle data on joint angles, and angular velocities of 36 post-stroke patients were collected eight times over six months using a motion capture system. Simultaneous clustering and classification were applied to determine the optimal gait types for reliable classification performance.

Efficient Lithium Growth Control from Ordered Nitrogen-Chelated Lithium-Ion for High Performance Lithium Metal Batteries.

Lithium (Li) metal has attracted significant attention as next-generation anode material owing to its high theoretical specific capacity and low potential. For enabling the practical application of Li-metal as an anode according to energy demands, suppressing dendrite growth by controlling the Li-ion (Li) is crucial. In this study, metal-organic frameworks comprising bipyridinic nitrogen linker (M-bpyN) are proposed as 3-dimensional (3D) Li guiding matrix.

Bipolar Host Materials for Organic Light-Emitting Diodes.

It is important to balance holes and electrons in the emitting layer of organic light-emitting diodes to maximize recombination efficiency and the accompanying external quantum efficiency. Therefore, the host materials of the emitting layer should transport both holes and electrons for the charge balance. From this perspective, bipolar hosts have been popular as the host materials of thermally activated delayed fluorescent devices and phosphorescent organic light-emitting diodes.