Results 21 to 30 of about 2,271,128 (293)
Frontiers in Earth Science, 2022 The Late Paleozoic Ice Age (LPIA; ca. 335–260 million years ago) was one of the most significant glacial events in Earth’s history. It records cycles of ice advance and retreat in southern high-latitude Gondwana and provides a deep-time perspective for ...
Peixin Zhang +5 more
doaj +1 more source
Energies, 2021 This study is predominantly about the differences in shale pore structure and the controlling factors of shale gas content between Lower Silurian and Lower Cambrian from the upper Yangtze plate, which are of great significance to the occurrence mechanism
Xiaoyan Zou +5 more
doaj +1 more source
Energies, 2022 The presence of natural fractures can significantly affect the quality of hydraulic fracturing operations in tightsand and shale or oil/gas formations.
Huifang Hu +4 more
doaj +1 more source
Adaption of Theoretical Adsorption Model on Coal: Physical Structure
Frontiers in Earth Science, 2021 With the motivation to investigate the role of coal physical structure on the adsorption performance of coal reservoir, 18 different types of coal samples with different coal structures were collected from six coal profiles of four production mines ...
Wu Guodai +15 more
doaj +1 more source
Robust Regression for Safe Exploration in Control
CoRR, 2019 We study the problem of safe learning and exploration in sequential control problems. The goal is to safely collect data samples from operating in an environment, in order to learn to achieve a challenging control goal (e.g., an agile maneuver close to a boundary).
Liu, Anqi +4 more
openaire +4 more sources
Verifiably safe exploration for end-to-end reinforcement learning [PDF]
Proceedings of the 24th International Conference on Hybrid Systems: Computation and Control, 2021 Deploying deep reinforcement learning in safety-critical settings requires developing algorithms that obey hard constraints during exploration. This paper contributes a first approach toward enforcing formal safety constraints on end-to-end policies with visual inputs.
Nathan Hunt +5 more
openaire +6 more sources
Is Laparoscopic Common Bile Duct Exploration Safe for the Oldest Old Patients? [PDF]
Annals of Geriatric Medicine and Research, 2022 Background This study aimed to identify the risk factors for postoperative complications of laparoscopic common bile duct exploration (LCBDE) in the oldest old patients aged 80 years or older.
Hee Jin Yeon +3 more
doaj +1 more source
Kansas Safe Kids Annual Report
, 2022 Safe Kids Kansas is a 501c(3) charitable organization and is a member of Safe Kids Worldwide, a global organization dedicated to preventing injuries in children.
Safe Kids Kansas, Inc.
core +1 more source
Safe Exploration in Continuous Action Spaces
CoRR, 2018 We address the problem of deploying a reinforcement learning (RL) agent on a physical system such as a datacenter cooling unit or robot, where critical constraints must never be violated. We show how to exploit the typically smooth dynamics of these systems and enable RL algorithms to never violate constraints during learning.
Gal Dalal +5 more
openaire +3 more sources
Safe Exploration for Efficient Policy Evaluation and Comparison
CoRR, 2022 High-quality data plays a central role in ensuring the accuracy of policy evaluation. This paper initiates the study of efficient and safe data collection for bandit policy evaluation. We formulate the problem and investigate its several representative variants.
Runzhe Wan +2 more
openaire +4 more sources