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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Nonlinear and Robust Control Strategy Based on Chemotherapy to Minimize the HIV Concentration in Blood Plasma by Ricardo Aguilar-López, Rigel Valentín Gómez-Acata, Gerardo Lara-Cisneros, Ricardo Femat

“…Numerical experiments show a satisfactory performance of the proposed methodology as a HIV therapy, in which the virion particles and the infected CD4+T cells are minimized and, as an interesting result, the drug dosage can be suspended, thus avoiding drug resistance from the virus. Finally, the proposed controller is compared to a standard sliding-mode and hyperbolic tangent controllers showing better performance.…”
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Modeling of Chronic Myeloid Leukemia: An Overview of In Vivo Murine and Human Xenograft Models by Pallavi Sontakke, Jenny Jaques, Edo Vellenga, Jan Jacob Schuringa

“…These models not only mimic CML but also have been instrumental in uncovering various fundamental mechanisms of CML disease progression and tyrosine kinase inhibitor (TKI) resistance. With the availability of iPSC technology, it has become feasible to derive, maintain, and expand CML subclones that are at least genetically identical to those in patients. …”
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Quels sens pour les savoirs scolaires en démocratie ? Approches, lectures, défis by Camille Roelens

“…The first part of our development is dedicat-ed to the respective contributions of Brigitte Frelat-Kahn, Marie-Claude Blais, Marcel Gauchet, Dominique Ottavi and finally Pierre Statius. Thus, we reconstruct an important moment of reflection on school issues in contemporary French democracy. …”
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Research of Meshing Contact Impact Stress Distribution of Circular Arc Tooth Trace Cylindrical Gear Surface by Ma Dengqiu, Wei Yongqiao, Ye Zhenhuan, Luo Lan, Hou Li

“…Then,the accurate 3 D model is set up based on the gear tooth surface equation,and the finite element analysis models of the meshing contact impact with different impact positions are established further. Finally,the simulation analysis of the meshing contact impact under the different impact speed,which occur at different positions is carried out,the distribution rule of the gear surface meshing contact impact stress are studied. …”
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On Mostar and Edge Mostar Indices of Graphs by Ali Ghalavand, Ali Reza Ashrafi, Mardjan Hakimi-Nezhaad

“…Next, the trees with the smallest and the largest Mostar and edge Mostar indices are also given. Finally, a recent conjecture of Liu, Song, Xiao, and Tang (2020) on bicyclic graphs with a given order, for which extremal values of the edge Mostar index are attained, will be proved. …”
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A hydropower plant scheduling model considering the stochastic correlation between runoff and electricity prices by WU Ying, WANG Juefei, LI Junjie, WANG Kun, SHEN Yan, WU Yingjun

“…Next， a Copula-Monte Carlo simulation method is used to model the joint risks of runoff and electricity prices， with Latin hypercube sampling （LHS） employed to enhance computational precision. Finally， case simulation and analysis are conducted to validate the effectiveness of the proposed model.…”
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Energy optimization for rural communities: an integrated approach to hybrid PV/Battery/Diesel systems by Jhon Jhonathan Peñalva-Sánchez, Jaime Eulogio Luyo- Kuong, Juan Manuel Peralta-Jaramillo, José Carlos Álvarez-Merino

“…The optimal Load Following dispatch strategy describes the energy flow of the system showing the participation of each generator on the day. Finally, the environmental impact of the system with and without a diesel generator is compared based on the amount of emission of pollutants in the environment throughout the year. …”
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URBAN REGENERATION AND TOURIST DEVELOPMENT: THE CASE OF THE FORMER INDUSTRIAL SUBURB OF BAGNOLI (NAPLES, ITALY) by Silvia IACUONE

“…After a qualitative analysis of the existing literature, a field analysis was conducted, in order to observe the resources of the territory and the strong dualism with the former industrial landscape. Finally, to support the analysis, a questionnaire was submitted to the residents of Bagnoli in which a renewed optimism for the regeneration of the neighborhood emerged, but also a strong awareness of the weakness of the institutions.…”
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AI-enabled 5G energy-saving technology by Dan XU, Yu ZENG, Weiye MENG, Lika LI

“…With the development of 5G commercialization, the number of 5G wireless base station sites has increased sharply, 5G core networks need to be deployed in regions/provinces/cities data centers, as well as the data centers were developing on a larger scale, the problem of energy consumption was becoming increasingly prominent.Based on the main proportion of energy consumption in the whole network, the energy efficiency evaluation methods of 5G access network, core network and data center was investigated.The AI-enabled energy-saving technology of base stations and pilot application scheme, 5G core network energy-saving methods by using AI, as well as the AI-enabled energy-saving technology of data centers and pilot application scheme were introduced, and the challenges and future research directions of energy-saving technology were finally discussed.The summary and prospect on the energy-saving technology of the overall communication system, will help to improve the understanding of energy efficiency and green network development.…”
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Nonfragile H∞ Stabilizing Nonlinear Systems Described by Multivariable Hammerstein Models by Zeineb Rayouf, Chekib Ghorbel, Naceur Benhadj Braiek

“…Besides, sufficient stability conditions for the robust and nonfragile controller synthesis based on quadratic Lyapunov function, H∞ criterion, and linear matrix inequality approach are provided. Finally, a numerical example based on twin rotor multi-input multi-output system is considered to demonstrate the effectiveness.…”
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The Role of Financial Technology on the Nexus Between Demographic, Socio-economic, and Psychological Factors, and the Financial Literacy Gap by Samira Ben Belgacem, Ghousia Khatoon, Hussaini Bala, Abad Alzuman

“…Additionally, women lacked confidence when responding to queries on financial literacy. Finally, the study concludes with implications for the policy-making bodies.…”
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Event-Based Time Varying Formation Control for Multiple Quadrotor UAVs with Markovian Switching Topologies by Zhen Zhou, Hongbin Wang, Zhongquan Hu

“…An event-triggered formation control protocol in terms of a dynamically varying threshold parameter is delicately carried out, while acquiring satisfactory resource efficiency, and Zeno behavior of triggering time sequences is excluded. Finally, simulations on six quadrotor UAVs are given to verify the effectiveness of the theoretical results.…”
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Static Stiffness Analysis of a New Scissor-type Telescoping and Lifting Mechanism by Hao Gang, Chang Boyan, Li Wenqi

“…Secondly,the kinematics equations of single deployable model is established and introduced into constructing the whole kinematics equations with multi-layer modules which can be used to validate the proposed method for achieving straight-line motion. Finally,taking STLM consisted with three-layer and two-row modules as an example,the structural behavior of static stiffness for this mechanism is analyzed by simulation. …”
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Formal Analysis of Fairness for Optimistic Multiparty Contract Signing Protocol by Xiaoru Li, Xiaohong Li, Guangquan Xu, Jing Hu, Zhiyong Feng

“…Furthermore, for solving or mitigating the state space explosion problem, we set a state reduction algorithm which can decrease the redundant states properly and reduce the time and space complexity greatly. Finally, this paper illustrates the feasibility of our approach by analyzing the GM and CKS protocols, and several fairness flaws have been found in certain computation times.…”
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On-Orbit Thermal Design and Validation of 1 U Standardized CubeSat of STEP Cube Lab by Soo-Jin Kang, Hyun-Ung Oh

“…The system functionality and thermal design were verified through thermal vacuum and thermal balance tests under space simulated thermal vacuum environment condition. Finally, the orbital temperature of each component was predicted using a highly reliable correlated thermal mathematical model of the CubeSat obtained from the thermal balance test.…”
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Lattices of fuzzy objects by Arturo A. L. Sangalli

“…Some familiar fuzzifications (fuzzy subgroups, fuzzy subalgebras, fuzzy topologies, etc.) are special cases of our construction. Finally, we show that the binary relations on a set X may be seen as the fuzzy subsets of X with respect to the valuation lattice 𝒫(X).…”
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Homomorphic encryption location privacy-preserving scheme based on Markov model by Kai ZHOU, Chang-gen PENG, Yi-jie ZHU, Jian-qiong HE

“…Secondly, system previously queries the user's high frequency con-tent and the prediction content under Markov chain, then store the corresponding result sets. Finally, the security of the scheme's double prediction system was analyzed. …”
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Identifying Interindustry CO2 Emissions Transfer Structure Using Network Methods by Xiaozhen Chen, Wenwen Xiao

“…In the visualization expression, it is easy to find the star nodes and the transmission paths of CO2 emissions among industries. Finally, the method is applied to the case of China. …”
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Schistosome-Derived Molecules as Modulating Actors of the Immune System and Promising Candidates to Treat Autoimmune and Inflammatory Diseases by Luis Janssen, Gisele Lorranna Silva Santos, Herick Sampaio Muller, Anderson Rodrigues Araújo Vieira, Tatiana Amabile de Campos, Vicente de Paulo Martins

“…Throughout the life cycle of schistosomes the mammalian hosts are exposed to several biomolecules that are excreted/secreted from the parasite infective stage, named cercariae, from their tegument, present in adult and larval stages, and finally from their eggs. These molecules can induce the activation and modulation of innate and adaptive responses as well as enabling the evasion of the parasite from host defense mechanisms. …”
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