Halah Hasan Mahmoud¹, Marwan Kadhim Mohammed Al-Shammari¹, Gehad Abdullah Amran^2,3,*, Elsayed Tag eldin^4,*, Ala R. Alareqi⁵, Nivin A. Ghamry⁶, Ehaa ALnajjar⁷, Esmail Almosharea⁸

CMC-Computers, Materials & Continua, Vol.76, No.1, pp. 573-589, 2023, DOI:10.32604/cmc.2023.039363 - 08 June 2023

Abstract Utilizing artificial intelligence (AI) to protect smart coastal cities has become a novel vision for scientific and industrial institutions. One of these AI technologies is using efficient and secure multi-environment Unmanned Vehicles (UVs) for anti-submarine attacks. This study’s contribution is the early detection of a submarine assault employing hybrid environment UVs that are controlled using swarm optimization and secure the information in between UVs using a decentralized cybersecurity strategy. The Dragonfly Algorithm is used for the orientation and clustering of the UVs in the optimization approach, and the Re-fragmentation strategy is used in the Network… More >

Saifur Rahman Sabuj¹, Mohammad Saadman Alam², Majumder Haider², Md Akbar Hossain³, Al-Sakib Khan Pathan^4,*

CMES-Computer Modeling in Engineering & Sciences, Vol.136, No.2, pp. 1053-1089, 2023, DOI:10.32604/cmes.2023.024078 - 06 February 2023

Abstract This paper discusses the significance and prospects of low altitude small satellite aerial vehicles to ensure smooth aerial-ground communications for next-generation broadband networks. To achieve the generic goals of fifthgeneration and beyond wireless networks, the existing aerial network architecture needs to be revisited. The detailed architecture of low altitude aerial networks and the challenges in resource management have been illustrated in this paper. Moreover, we have studied the coordination between promising communication technologies and low altitude aerial networks to provide robust network coverage. We talk about the techniques that can ensure userfriendly control and monitoring More > Graphic Abstract

Zeke Wu¹, Kefeng Guo^2,*, Rui Liu¹, Shibin Zhu¹

CMES-Computer Modeling in Engineering & Sciences, Vol.135, No.1, pp. 583-598, 2023, DOI:10.32604/cmes.2022.023093 - 29 September 2022

Abstract In recent years, Internet of Things (IoT) technology has emerged and gradually sprung up. As the needs of large-scale IoT applications cannot be satisfied by the fifth generation (5G) network, wireless communication network needs to be developed into the sixth generation (6G) network. However, with the increasingly prominent security problems of wireless communication networks such as 6G, covert communication has been recognized as one of the most promising solutions. Covert communication can realize the transmission of hidden information between both sides of communication to a certain extent, which makes the transmission content and transmission behavior… More > Graphic Abstract

Shuting Chang^1,2, Guanzhao Zhang^2,3, Nengjun Sun², Xinpeng Yuan⁴, Qingting Wang⁵, Lin Zhu⁶, Feiyue Zhang⁷, Yu Xiu⁴, Yang Dong⁸, Yonghong Chen⁹, Zhanpeng Zhao¹⁰, Xiao Liu⁴, Qiang Shao¹¹, Xiaofeng Xu¹², Anshun Wang¹³, Mengjiao Li¹⁴, Bo Li^2,*

Congenital Heart Disease, Vol.17, No.6, pp. 709-716, 2022, DOI:10.32604/chd.2022.018657 - 11 October 2022

Abstract Background: This study aimed to illustrate the prevalence of CHD by screening children in extremely high-altitude areas (over 4000 m to even 5000 m above sea level) and explore an aid model for early diagnosis and treatment for the Tibetan population. Methods: A total of 2242 students from different schools in Ngamring County, Xigaze city, Tibet from September 2019 to September 2020 were selected for screening. The students were examined through the inquiry of their current medical history and family history, cardiac auscultation and a physical examination, in order to screen out the suspected cases of… More >

Haykel Marouani^1,*, Fahad Awjah Almehmadi¹, Rihem Farkh², Habib Dhahri³

CMC-Computers, Materials & Continua, Vol.73, No.3, pp. 4981-4994, 2022, DOI:10.32604/cmc.2022.029315 - 28 July 2022

Abstract

In this work, the concepts of particle swarm optimization-based method, named non-Gaussian improved particle swarm optimization for minimizing the cost of energy (COE) of wind turbines (WTs) on high-altitude sites are introduced. Since the COE depends on site specification constants and initialized parameters of wind turbine, the focus was on the design optimization of rotor radius, hub height and rated power. Based on literature, the COE is converted to the Saudi Arabia context. Thus, the constrained wind turbine optimization problem is developed. Then, non-Gaussian improved particle swarm optimization is provided and compared with the conventional

… More >

Lukas Minder¹, Markus Schwerzmann^1,2, Thomas Radtke^1,3, Hugo Saner¹, Prisca Eser¹, Matthias Wilhelm¹, Jean-Paul Schmid^1,4,*

Congenital Heart Disease, Vol.16, No.6, pp. 597-608, 2021, DOI:10.32604/CHD.2021.016031 - 08 July 2021

Abstract Objective: To extend our knowledge on tolerance of acute high-altitude exposure and hemodynamic response to exercise in adolescents with congenital heart disease (AscCHD) without meaningful clinical or functional restriction. Methods: A symptom limited cardiopulmonary exercise stress test and a non-invasive cardiac output measurement during steady state exercise were performed at 540 m and at 3454 m a.s.l. Symptoms of acute mountain sickness were noted. Results: We recruited 21 healthy controls and 16 AscCHD (59% male, mean age 14.7 ± 1.1 years). Three subjects (2 controls, 1 AscCHD) presented light symptoms of acute mountain sickness (dizziness and headache). During… More >

Jingjing Li¹, Xiaorong Wang², Yuan Liu³, Guodong Zhao³, Ting Dai³, Hong Chen³, Haiyan Liao⁴, Haiying Qi^3,#, Jia Li^5,6,7,#,*

Congenital Heart Disease, Vol.16, No.1, pp. 45-52, 2021, DOI:10.32604/CHD.2021.013459 - 23 December 2020

Abstract Background: Previous studies from high altitudes have reported significantly higher prevalence of congenital heart disease (CHD), consisting almost solely of simple CHD. Little is known about the occurrence of complex CHD. Neonates with complex CHD are likely admitted to NICU. We examined the prevalence and spectrum of complex CHD in NICU in order to depict a truer picture of CHD at high altitude. Methods: We reviewed charts of 4,214 neonates admitted to NICU in Qinghai province (average altitude 3,000 m). Echocardiography was performed in 1,943 babies when CHD was suspected based on clinical examinations. Results: CHD was… More >

Sooeun Song¹, Minsu Choi¹, Yunyeong Goh¹, Jusik Yun¹, Wonsuk Yoo¹, Wonsik Yang¹, Jaewook Jung¹, Jong-Moon Chung^{1, *}

CMC-Computers, Materials & Continua, Vol.62, No.2, pp. 473-494, 2020, DOI:10.32604/cmc.2020.09052

Abstract As next generation communication technologies emerge, new high data rate applications and high-definition large-screen video streaming have become very popular. As a result, network traffic has been increasing so much that existing backhaul networks soon will not be able to support all traffic demands. To support these needs in future 6G mobile systems, the establishment of an additional backhaul wireless network is considered essential. As one of the solutions, a wireless backhaul network based on an aerial platform has been proposed. In order to explore the potential of aerial platforms as wireless backhaul networks, in More >

Tim Takken¹, Alyanne Evertse¹, Fleur de Waard¹, Mandy Spoorenburg¹, Martijn Kuijpers¹, Christian Schroer^2,3, Erik H. Hulzebos¹

Congenital Heart Disease, Vol.14, No.6, pp. 1005-1012, 2019, DOI:10.1111/chd.12850

Abstract Background: Traveling to high altitude has become more popular. High‐altitude exposure causes hypobaric hypoxia. Exposure to acute high altitude, during air travel or mountain stays, seems to be safe for most patients with congenital heart disorders (CHD). Still, current guidelines for CHD patients express concerns regarding safety of altitude exposure for patients with a Fontan circulation. Therefore, investigating hemodynamic and pulmonary responses of acute high‐altitude exposure (±2500 m) at rest and during maximal exercise in patients with Fontan circulation can provide clarity in this dispute and may contribute to improvement of clinical counseling.
Methods: Twenty‐one Fontan patients… More >

Fabricio González‐Andrade, Daniel Echeverría, Valeria López, Michaela Arellano

Congenital Heart Disease, Vol.13, No.6, pp. 911-918, 2018, DOI:10.1111/chd.12654

Abstract Objective: To assess the pulse oximetry as a method for screening critical congenital heart disease (CHD) in newborns.
Study design: This is an observational, transversal, descriptive simple study. The pre‐ ductal and postductal saturation were taken in term newborns thatfulfilled the criteria of inclusion and exclusion in the Hospital Gineco‐Obstetrico Isidro Ayora (HGOIA) in Quito. These measurements were performed between the 24 and 48 h after birth. Those new‐ borns that saturated less than 90% on initial pulse oxìmetry underwent 3 successive measurements at 1‐h intervals. Those who saturate less than 90% after 3 measurements or have… More >