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  • Open Access

    ARTICLE

    Study on Evacuation Strategy of Commercial High-Rise Building under Fire Based on FDS and Pathfinder

    Zheng Yan1, Ying Wang1,*, Longxiao Chao1, Jian Guo2

    CMES-Computer Modeling in Engineering & Sciences, Vol.138, No.2, pp. 1077-1102, 2024, DOI:10.32604/cmes.2023.030023

    Abstract With the development of economy and society and the growth of population, the high-rise and multi-function of commercial buildings have become an international trend. But it also poses huge fire hazards. Most of the existing studies’ research objects are predominantly high-rise residential buildings, without considering the impact of different functional zones (Standard floor, entertainment zone, office zone, equipment room and so on) and personnel distribution of commercial buildings evacuation. And the influence of using elevators to carry evacuees on the refuge floor on personnel evacuation is rarely studied. In this work, the fire scenario of… More >

  • Open Access

    ARTICLE

    A Combustion Model for Explosive Charge Affected by a Bottom Gap in the Launch Environment

    Shibo Wu1, Weidong Chen1,*, Jingxin Ma2, Lan Liu1, Shengzhuo Lu1, Honglin Meng1, Xiquan Song3

    CMES-Computer Modeling in Engineering & Sciences, Vol.138, No.2, pp. 1207-1236, 2024, DOI:10.32604/cmes.2023.029471

    Abstract Launch safety of explosive charges has become an urgent problem to be solved by all countries in the world as launch situation of ammunition becomes consistently worse. However, the existing numerical models have different defects. This paper formulates an efficient computational model of the combustion of an explosive charge affected by a bottom gap in the launch environment in the context of the material point method. The current temperature is computed accurately from the heat balance equation, and different physical states of the explosive charges are considered through various equations of state. Microcracks in the… More > Graphic Abstract

    A Combustion Model for Explosive Charge Affected by a Bottom Gap in the Launch Environment

  • Open Access

    ARTICLE

    A Calculation Method of Double Strength Reduction for Layered Slope Based on the Reduction of Water Content Intensity

    Feng Shen1,*, Yang Zhao1, Bingyi Li1, Kai Wu2

    CMES-Computer Modeling in Engineering & Sciences, Vol.138, No.1, pp. 221-243, 2024, DOI:10.32604/cmes.2023.029159

    Abstract The calculation of the factor of safety (FOS) is an important means of slope evaluation. This paper proposed an improved double strength reduction method (DRM) to analyze the safety of layered slopes. The physical properties of different soil layers of the slopes are different, so the single coefficient strength reduction method (SRM) is not enough to reflect the actual critical state of the slopes. Considering that the water content of the soil in the natural state is the main factor for the strength of the soil, the attenuation law of shear strength of clayey soil… More >

  • Open Access

    RETRACTION

    Retraction: Safety and Efficacy of Biodegradable Patent Foramen Ovale Occluder in Patients with Migraine: A Clinical Trial

    Xingbang Li1,#, Xuan Zheng2,#, Bowen Jin1, Yunyan Li1, Yongyu Shao1, Xiaoxian Deng1, Dingyang Li1, Shanshan Li1, Hongmei Zhou1, Jie Zhang3, Xianya Zhang4, Qunshan Shen1, Gangcheng Zhang2,*

    Congenital Heart Disease, Vol.18, No.4, pp. 489-489, 2023, DOI:10.32604/chd.2023.031413

    Abstract This article has no abstract. More >

  • Open Access

    ARTICLE

    AI Safety Approach for Minimizing Collisions in Autonomous Navigation

    Abdulghani M. Abdulghani, Mokhles M. Abdulghani, Wilbur L. Walters, Khalid H. Abed*

    Journal on Artificial Intelligence, Vol.5, pp. 1-14, 2023, DOI:10.32604/jai.2023.039786

    Abstract Autonomous agents can explore the environment around them when equipped with advanced hardware and software systems that help intelligent agents minimize collisions. These systems are developed under the term Artificial Intelligence (AI) safety. AI safety is essential to provide reliable service to consumers in various fields such as military, education, healthcare, and automotive. This paper presents the design of an AI safety algorithm for safe autonomous navigation using Reinforcement Learning (RL). Machine Learning Agents Toolkit (ML-Agents) was used to train the agent with a proximal policy optimizer algorithm with an intrinsic curiosity module (PPO + ICM). This training… More >

  • Open Access

    ARTICLE

    Safety and Efficacy of Biodegradable Patent Foramen Ovale Occluder in Patients with Migraine: A Clinical Trial

    Xingbang Li1,#, Xuan Zheng2,#, Bowen Jin1, Yunyan Li1, Yongyu Shao1, Xiaoxian Deng1, Dingyang Li1, Shanshan Li1, Hongmei Zhou1, Jie Zhang3, Xianya Zhang4, Qunshan Shen1, Gangcheng Zhang2,*

    Congenital Heart Disease, Vol.18, No.3, pp. 373-385, 2023, DOI:10.32604/chd.2023.028979

    Abstract Background: Transcatheter closure of patent foramen ovale (PFO) has been widely accepted as a highly effective way to treat high-risk PFO-related diseases. However, traditional non-degradable occluders made of metal alloys will permanently exist in the body, resulting in thrombosis, valve damage, hemolysis, arrhythmia, or other complications. The biodegradable PFO occluder developed by Shanghai Mallow Medical Instrument Co., Ltd., China can be fully absorbed and degrade into nontoxic ingredients, reducing postoperative complications. Objectives: To study the safety and efficacy of biodegradable PFO occluders in treating PFO. Methods: This single-center clinical trial collected 30 patients treated with a More > Graphic Abstract

    Safety and Efficacy of Biodegradable Patent Foramen Ovale Occluder in Patients with Migraine: A Clinical Trial

  • Open Access

    ARTICLE

    Using Pharmacokinetic Modeling and Electronic Health Record Data to Predict Clinical and Safety Outcomes after Methylprednisolone Exposure during Cardiopulmonary Bypass in Neonates

    Henry P. Foote1, Huali Wu2, Stephen J. Balevic1,2, Elizabeth J. Thompson1,2, Kevin D. Hill1,2, Eric M. Graham3, Christoph P. Hornik1,2, Karan R. Kumar1,2,*

    Congenital Heart Disease, Vol.18, No.3, pp. 295-313, 2023, DOI:10.32604/chd.2023.026262

    Abstract Background: Infants undergoing cardiac surgery with cardiopulmonary bypass (CPB) frequently receive intra-operative methylprednisolone (MP) to suppress CPB-related inflammation; however, the optimal dosing strategy and efficacy of MP remain unclear. Methods: We retrospectively analyzed all infants under 90 days-old who received intra-operative MP for cardiac surgery with CPB from 2014–2017 at our institution. We combined real-world dosing data from the electronic health record (EHR) and two previously developed population pharmacokinetic/pharmacodynamic models to simulate peak concentration (Cmax) and area under the concentration-time curve for 24 h (AUC24) for MP and the inflammatory cytokines interleukin-6 (IL-6) and interleukin-10… More > Graphic Abstract

    Using Pharmacokinetic Modeling and Electronic Health Record Data to Predict Clinical and Safety Outcomes after Methylprednisolone Exposure during Cardiopulmonary Bypass in Neonates

  • Open Access

    ARTICLE

    IoT-Based Women Safety Gadgets (WSG): Vision, Architecture, and Design Trends

    Sharad Saxena1, Shailendra Mishra2,*, Mohammed Baljon2,*, Shamiksha Mishra3, Sunil Kumar Sharma2, Prakhar Goel1, Shubham Gupta1, Vinay Kishore1

    CMC-Computers, Materials & Continua, Vol.76, No.1, pp. 1027-1045, 2023, DOI:10.32604/cmc.2023.039677

    Abstract In recent years, the growth of female employees in the commercial market and industries has increased. As a result, some people think travelling to distant and isolated locations during odd hours generates new threats to women’s safety. The exponential increase in assaults and attacks on women, on the other hand, is posing a threat to women’s growth, development, and security. At the time of the attack, it appears the women were immobilized and needed immediate support. Only self-defense isn’t sufficient against abuse; a new technological solution is desired and can be used as quickly as… More >

  • Open Access

    ARTICLE

    Smart Shoes Safety System for the Blind People Based on (IoT) Technology

    Ammar Almomani1,2,*, Mohammad Alauthman3, Amal Malkawi2, Hadeel Shwaihet2, Batool Aldigide2, Donia Aldabeek2, Karmen Abu Hamoodeh2

    CMC-Computers, Materials & Continua, Vol.76, No.1, pp. 415-436, 2023, DOI:10.32604/cmc.2023.036266

    Abstract People’s lives have become easier and simpler as technology has proliferated. This is especially true with the Internet of Things (IoT). The biggest problem for blind people is figuring out how to get where they want to go. People with good eyesight need to help these people. Smart shoes are a technique that helps blind people find their way when they walk. So, a special shoe has been made to help blind people walk safely without worrying about running into other people or solid objects. In this research, we are making a new safety system… More >

  • Open Access

    ARTICLE

    Safety Assessment of Liquid Launch Vehicle Structures Based on Interpretable Belief Rule Base

    Gang Xiang1,2, Xiaoyu Cheng3, Wei He3,4,*, Peng Han3

    Computer Systems Science and Engineering, Vol.47, No.1, pp. 273-298, 2023, DOI:10.32604/csse.2023.037892

    Abstract A liquid launch vehicle is an important carrier in aviation, and its regular operation is essential to maintain space security. In the safety assessment of fluid launch vehicle body structure, it is necessary to ensure that the assessment model can learn self-response rules from various uncertain data and not differently to provide a traceable and interpretable assessment process. Therefore, a belief rule base with interpretability (BRB-i) assessment method of liquid launch vehicle structure safety status combines data and knowledge. Moreover, an innovative whale optimization algorithm with interpretable constraints is proposed. The experiments are carried out… More >

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