Improved SLM algorithm for PAPR reduction in OFDM system by Ce JI, Wenjing ZHU, Ying WEI, Dianxia JIA

“…In order to reduce the peak to average power ratio (PAPR) of the conventional selective mapping (SLM) algorithm,decrease the transmission of side-band information,and improve the spectral efficiency in the orthogonal frequency division multiplexing (OFDM) system,the TL-SLM algorithm based on the conversion matrix and the chaotic sequence was proposed firstly.Although the TL-SLM algorithm could effectively decrease the transmission of side-band information,the reduction of PA P R was limited.To solve this problem,an improved TL-SLM algorithm based on the rotation vector was proposed,which was the TR-SLM algorithm.TR-SLM algorithm introduced the rotation vector to generate more time-domain alternative signals to further reducing the PA P R.The performance analysis shows that although the TL-SLM algorithm and the TR-SLM algorithm increase the complexity a little,the PA P R performance is effectively improved and the transmission of side-band information is greatly reduced.…”
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Greener solvents in extraction of proteins and peptides by Katarína Maráková

“…The sample pretreatment still represents a fundamental aspect of any analytical workflow, and the implementation of sustainable and efficient extraction of proteins is essential to satisfy the increasing requirements for high-quality extraction of proteins from their natural sources. …”
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Comparison of Hadoop Mapreduce and Apache Spark in Big Data Processing with Hgrid247-DE by Firmania Dwi Utami, Femi Dwi Astuti

“…This study provides valuable insights into the strengths and limitations of each framework, offering guidance for practitioners and researchers when selecting the appropriate tool for specific big data processing requirements, particularly with respect to speed, memory usage, and task complexity.…”
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New fruit waste-derived activated carbons of high adsorption performance towards metal, metalloid, and polymer species in multicomponent systems by Sylwia Kukowska, Piotr Nowicki, Katarzyna Szewczuk-Karpisz

“…In the two-component systems, polymers could favour metal/metalloid adsorption based on complexation phenomena. However, the most efficient and environmentally safe activated carbon turned out to be the one obtained from orange peels by microwave-assisted, direct activation at 800 °C in the CO2 atmosphere.…”
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Patient characteristics and hospitalisation costs of spinal muscular atrophy in Spain: a retrospective multicentre database analysis by Josep Darbà, Alicia Marsà

“…The average annual cost per admission was €6274, with large variations likely to reflect disease complexity and that increases with length of stay.Conclusions The rarity of the disease difficulties the study of demographics and management; yet, an analysis of patient characteristics provides necessary information that can be used by governments to establish more efficient healthcare protocols. …”
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Design and performance evaluation of low-voltage solid-state DCCB using capacitor-based surge mitigation techniques by Mehdi Moradian, Tek Tjing Lie, Kosala Gunawardane

“…The optimal surge absorption configuration will be chosen based on its ability to meet various criteria, including efficient operation, rapid response, minimal complexity on both power and control sides, and the involvement of active and passive components. …”
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Objective Feedback Recommendation in Multicriteria Large-Group Emergency Decision-Making by D. D. Orshella, N. A. Masruroh, H. M. Arini

“…In emergencies, a comprehensive solution must be determined using large-group emergency decision making (LGEDM), which relies on the perspectives of experts from various fields. The inherent complexity and uncertainty of these situations necessitate the adoption of multicriteria decision-making approaches. …”
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Influence of Electron Transfer Mediators in the Pd(II)-Catalyzed Oxidative Carbonylation of Aniline by Andrea Vavasori, Lucio Ronchin, Luca Pietrobon, Sara Bravo

“…Testing several Pd(II) complexes, metal cocatalysts, and promoters, we have found that the [PdCl₂(dppf)]/FeCl₃/LiBr = 1/1200/200 (mol/mol) system efficiently catalyzes the carbonylation of aniline to form 1,3–diphenylurea selectively (100%) with a TOF of ca. 1177 h⁻¹. …”
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Heterogeneous Electrocatalytic CO2 Reduction by Supported Molecular Catalysts Well Dispersed on Electrode Surface by Ke Ma, Shiyu Zhang, Weixuan Nie

“…Among various electrocatalysts, molecular catalysts, particularly transition metal complexes, stand out due to the high selectivity for single specific products and desirable tunability, enabling rational optimization of catalytic performance. …”
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AI in Marketing Management: Executive Perspectives from Companies

“…The findings reveal that effort expectancy and facilitating conditions are critical drivers of AI adoption. AI aversion, reflecting concerns about distrust, complexity, and ethical risks, emerges as a significant barrier, particularly for CEOs of smaller firms, where its impact is notably stronger. …”
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Effects of startle on cognitive performance and physiological activity revealed by fNIRS and thermal imaging by Flora Schwartz, Jonathan Deniel, Mickaël Causse

“…In the high difficulty condition, participants were generally less efficient, but their performance improved slightly following startle in the high difficulty condition. …”
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Economic diagnosis of operational activities of an industrial enterprise based on business indicators by E. Yu. Belova, A. V. Badina

“…It is identified that there exists a certain ambiguity in approaches to the concepts of efficiency and performance of activities of modern market economy subjects. …”
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Container Liner Shipping System Design Considering Methanol-Powered Vessels by Zhaokun Li, Xinke Yu, Jianning Shang, Kang Chen, Xu Xin, Wei Zhang, Shaoqiang Yu

“…Moreover, we propose an adaptive piecewise linearization approach combined with a genetic algorithm, which can efficiently solve large-scale instances. Sensitivity analyses of fuel types and fuel prices are conducted to demonstrate the effectiveness of the model and algorithm. …”
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Spatial ratio of two fungal genotypes content of Naematelia aurantialba and Stereum hirsutum in nutritional growth substrate and fruiting bodies reveals their potential parasitic l... by Jianqiong Lan, Yongkang Zhang, Yingli Cai, Xiaofei Shi, Kaixuan Zhang, Jiacheng Huang, Chengmo Yang, Xinhua He, Fuqiang Yu, Wei Liu

“…Nine species-specific fragments were selected, with four primer pairs validated after evaluating amplification efficiency and melting curves. …”
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3D CAD model classification based on Convolutional Neural Network by DING Bo, YI Ming

“…Due to the intrinsic complexity of 3D CAD models, the automatic model classification methods are scarce. …”
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Tandem reductive amination and deuteration over a phosphorus-modified iron center by Haifeng Qi, Yueyue Jiao, Jianglin Duan, Nicholas F. Dummer, Bin Zhang, Yujing Ren, Stuart H. Taylor, Yong Qin, Kathrin Junge, Haijun Jiao, Graham J. Hutchings, Matthias Beller

“…Abstract Deuterated amines are key building blocks for drug synthesis and the identification of metabolites of new pharmaceuticals, which drives the search for general, efficient, and widely applicable methods for the selective synthesis of such compounds. …”
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Preprocessing optimization algorithm based on partial channel information feedback in wideband OFDM systems by WANG Xia1, ZHANG Guo-mei1, XUE Tao2

“…To mitigate inter-block interference（IBI） and inter-carrier interference（ICI） in an orthogonal frequency divi-sion multiplexing（OFDM） system,pre-processing approaches at transmitters based on full channel state information（CSI） had been proposed,the performance improved and receiver simplied.However,feeding full CSI back would oc-cupy scarce bandwidth and was impractical sometimes for the systems with high real-time demand.To deal with this problem,a preprocessing optimization based on partial CSI feedback was investigated and three selected preprocessing approaches of optimization matrix were developed and tested.Computer simulation results showed that the proposed op-timization algorithm can effectively cancel IBI and ICI and significantly improve the performance in wideband OFDM systems.Compared with the pre-processing approaches at transmitters based on full CSI,under the condition of meeting the demand for quality of services（QoS）,the proposed scheme has high spectral efficiency and low feedback and com-putation complexity.…”
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Cellular network based multistatic integrated sensing and communication systems by Zixiang Han, Haiyu Ding, Lincong Han, Liang Ma, Xiaozhou Zhang, Mengting Lou, Yajuan Wang, Jing Jin, Qixing Wang, Guangyi Liu, Jiangzhou Wang

“…Joint data processing with an efficient optimization method is also provided. In addition, key issues in the cellular network based multistatic ISAC system are analyzed. …”
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Microscopic Pore–Throat Architecture and Fractal Heterogeneity in Tight Sandstone Reservoirs: Insights from the Denglouku Formation, Xujiaweizi Fault Depression by Zeqiang Wang, Yunfeng Zhang, Yilin Li, Xuntao Yu, Jiapeng Yuan, Botao Huang

“…The pore–throat structure in the study area exhibited typical three-segment fractal characteristics, reflecting the complexity and multi-scale heterogeneity of the reservoir’s pore–throat system. …”
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Sustainability Measurement of Farming System in Isfahan Agricultural Sector (Smallholders-Rural Production Cooperatives- Farm Corporation) by Saedali Nekooei Naenii, Yosef Ghanbari, Hamid Barghi

“…Stability measurement is a complex interaction between technology, the environment and society. …”
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