Joint user activity and signal detection for massive multiple-input multiple-output by Xiaoqun SONG, Ming JIN, Zhongjie JIA

“…In uplink grant-free massive multiple-input multiple-output (mMIMO) systems, the performance of available methods for joint user activity and signal detection deteriorates when the correlation of receiving antennas or the number of active devices increases.Moreover, the available methods require the knowledge of noise power, which is often practically unknown.To address the above issues, combining approximate message passing with unitary transformation and expectation maximization algorithm to jointly implement user activity and signal detection was proposed.Different from the conventional approximate message passing algorithm, the proposed one assumes that the noise power was unknown.Firstly, by exploiting the approximate message passing algorithm with unitary transform, the distribution of transmitted symbols together with the distribution of noise power was obtained.Secondly, expectation maximization algorithm was applied to estimate the user activity.Finally, the signal detection was implemented by deriving the posterior distribution of the decoupled signal belongs.Simulation results show that the proposed method is better than the traditional method in joint user activity and signal detection.…”
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Enhancing shear stability in laminated rock masses: A comparative study of traditional and resilient rock bolts by Chang Zhou, Chunni Han, Chunye Ying, Yaluo Mi, Qiang Wang, Tao Liu

“…This innovative design offers improved performance and reliability in rock mass stabilization.…”
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Bakelite beak retrieval: a case report of a simple strategy using suture material by Daniel Xavier Lima, Claudinei Tavares Pereira, Valdinei Oliveira Rocha

“…Addressing surgical complications, especially the removal of foreign bodies from the bladder, is often challenging, particularly when technical resources are limited. …”
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CRITERIA OF ECONOMIC AND SOCIAL EFFICIENCY OF REGIONAL MANAGEMENT TEAMS IN THE RUSSIAN FEDERATION by A. Nikitin

“…The criteria of economic and social efficiency of regional management teams’ activity in Russian Federation subjects are offered. Economic criteria on the basis of the National investment climate’ results rating in 2015-2016 are revealed. …”
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Fuzzy Enhanced Kidney Tumor Detection: Integrating Machine Learning Operations for a Fusion of Twin Transferable Network and Weighted Ensemble Machine Learning Classifier by Ananya Ghosh, Jyotismita Chaki

“…Kidney tumors, often asymptomatic, can lead to serious health problems if left undiagnosed. …”
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Study on Dynamics of Wind Turbine Gearbox with Crack Fault under Random Wind Load by Jinwen Wang, Xiayue Ma, Zihao Liu, Xiaolu Leng, Shijing Wu

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A Comparison of the Outcomes of COVID-19 Vaccinated and Nonvaccinated Patients Admitted to an Intensive Care Unit in a Low-Middle-Income Country by Waleed Bin Ghaffar, Muhammad Faisal Khan, Moeed Bin Abdul Ghaffar, Muhammad Sohaib, Asma Rayani, Muhammad Mehmood Alam, Syed Talha Sibtain, Zahra Cheema, Asad Latif

“…Patients critically afflicted with coronavirus disease 2019 (COVID-19) often need intensive care unit (ICU) admission, despite comprehensive vaccination campaigns. …”
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Study on the Influence of Poly-V Belt Effective Length Extreme Deviation on Diesel EFEADS Performance by Decheng Wang, Pengchao Sui, Dongling Ma, Chao Zeng, Shi Cheng

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Few Samples of SAR Automatic Target Recognition Based on Enhanced-Shape CNN by Mengmeng Huang, Fang Liu, Xianfa Meng

“…Some researchers point out that existing convolutional neural network (CNN) paid more attention to texture information, which is often not as good as shape information. Wherefore, this study designs the enhanced-shape CNN, which enhances the target shape at the input. …”
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Research of the Variation of Meshing Force of the Plastic Helical Gear and Steel Worm by Yun Yonghu, Hu Hong, Ta Jingning

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Selection and appointment of higher education leaders in Ethiopia: An assessment of implementation by Abebaw Yirga Adamu

“…However, there were issues which created confusion among the community, including eligibility of applicants, terms of office of the search and selection committee, point allocation for experience based on different ranges, number of candidates considered to be sufficient to run the selection process, and the procedure that needs to be followed if there are no enough applicants for a post. …”
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Acoustic Analysis of Mandarin Chinese Vowels Produced by Young Adults by Zhenni WANG, Yang CHEN, Manwa L. NG, Liqun YAO, Weiming ZHANG

“…Objectives:Acoustic analysis is a kind of objective assessment of speech-sound which can offer a relatively simple and visual way to examine production of a vowel. …”
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Surface Texturing with Hemispherical Cavities to Improve Efficiency in Silicon Solar Cells by D. W. de Lima Monteiro, F. P. Honorato, R. F. de Oliveira Costa, L. P. Salles

“…Improvement of solar-cell efficiency at a minimum possible cost addition is constantly sought, and this is often achieved at incremental percentage steps. Among a number of alternatives, antireflective coatings and surface texturing are the most prominent. …”
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"I Fregi del Ceppo”: when artificial intelligence and geomatics meet theatre by Pietro Bartolini, Alessandro Conti, Lidia Fiorini, Grazia Tucci

“…I Fregi del Ceppo demonstrates how digital heritage can enhance theatre, extending the life of historical works and offering new cultural experiences. It also points to a future where AI and 3D technologies will play an increasingly central role in shaping the performing arts.…”
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Approach to Method of Optimizing Allocation of Urban Water Resources by 鲁南, 刘云华

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Lepton Flavor Violation beyond the MSSM by A. Vicente

“…Given the promising experimental perspectives for lepton flavor violation in the next few years, this generic expectation might offer a powerful indirect probe to look for new physics. …”
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Analysis of the Dynamic Load Sharing Characteristic of Two-stage Planetary Transmission by Li Siqian, Wu Shijing, Wang Xiaosun

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Immunizing adult female mice with a TcpA-A2-CTB chimera provides a high level of protection for their pups in the infant mouse model of cholera. by Gregory A Price, Randall K Holmes

“…Immunized females were mated; their reared offspring were challenged orogastrically with 10 or 20 LD50 of V. cholerae El Tor N16961; and vaccine efficacy was assessed by survival of the challenged pups at 48 hrs. …”
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Choosing A Credit Card by Mary N. Harrison

“…Frequently these offers say that you are or have been “pre-approved” and urge you to respond “before the offer expires.” …”
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ADVANCE HYDRAULIC SUPPORT MULTI-OBJECTIVE OPTIMIZATION DESIGN BASED ON NSGA-Ⅱ ALGORITHM by NIU YanQi, LIU Wei, ZHANG DeSheng

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