Feedback bit allocation in distributed antenna array systems by Shuai ZHANG, Peng PAN, Cui WANG

“…In a frequency division duplex communication system,precoding at the base station usually requires terminal feedback channel state information.In a distributed array system,the channel conditions between the terminal and different access nodes in the cell are different because multiple access nodes are arranged at different locations in the cell.When the resources for feedback channel state information are limited,the allocation method of feedback bit needs to be optimized to improve the overall performance of the system.In a multi-user distributed array system,an access node selection method based on distance threshold was adopted.Based on this method,the quantization characteristics of the random vector quantization codebook and the Taylor expansion method were used to derive the system quantization capacity loss,and then an approximate expression was given.Based on this expression,a feedback bit allocation method was proposed.Compared with other allocation methods,the method of this paper was more universal because it did not limit the number of access nodes selected by the user.The simulation results show that the strategy proposed is superior to the traditional equal-bit allocation scheme and can obtain better performance when the feedback resources are limited.…”
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Nonlinear Effects of Changes in Government Expenditures Across Global Economies: Insights from a QNARDL Analysis by Rianmahardhika Sahid Budiharseno, Min-Joon Kim

“…Unlike traditional models, this study decomposes government expenditure into positive and negative changes, estimating their impacts across different growth quantiles. The QNARDL model provides more detailed information than linear models such as the threshold autoregressive model, panel threshold method, quadratic form, and data envelopment analysis. …”
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The relationship of gastrointestinal complications and ventilator related status with gastric residual volume in intensive care patients by Dilek Destegül, Muhammet Bayraktar, Zeynep Yüksel Turhan, Fazilet Şahin Kocaöz, Mustafa Kaçmaz

“…Aim: Our study aimed primarily to determine whether there was a relationship between total gastric residual volume (GRV) amounts and two different GRV thresholds and the development of gastrointestinal intolerance in patients on mechanical ventilation in the intensive care unit (ICU) and secondarily, to determine the effects of different GRV quantities on ventilator-related conditions (VAC).Methods: Seventy patients above the age of 18 who were scheduled to be fed with enteral nutrition (EN) for at least three days, were divided into two groups including 35 patients according to GRV threshold values of 250 ml and 500 ml. …”
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Improving the navigation optimization of hospital logistics robots under complex lighting changes by using improved ORB-SLAM3 and deep learning visual SLAM algorithm by Feng Xiao, Youhai Zhang, Jie Fang, Xing Guo, Rubing Huang

“…The improved ORB-SLAM3 algorithm extracts feature points of different scales by constructing an image pyramid to ensure that effective visual information can be stably obtained under different lighting conditions; the strategy of combining adaptive threshold and dual threshold methods is used to optimize the accuracy of feature point extraction, and the feature points are efficiently managed through a four-tree model to ensure the uniform distribution of feature points. …”
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Stabilization of cultural innovations depends on population density: Testing an epidemiological model of cultural evolution against a global dataset of rock art sites and climate-b... by Richard Walker, Anders Eriksson, Camille Ruiz, Taylor Howard Newton, Francesco Casalegno

“…Results for different geographical areas and periods are compatible with the predictions of the model and confirm its superiority with respect to the null model. …”
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Long short-term memory autoencoder based network of financial indices by Kamrul Hasan Tuhin, Ashadun Nobi, Mahmudul Hasan Rakib, Jae Woo Lee

“…Abstract We present a novel approach for analyzing financial time series data using a Long Short-Term Memory Autoencoder (LSTMAE), a deep learning method. Our primary objective is to uncover intricate relationships among different stock indices, leading to the extraction of stock networks. …”
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pilot study of combined transvertebral magnetic and transcutaneous stimulation for the rehabilitation of combat acute spinal cord injuries by Oleksandr Kulyk, Ivan Mazurchuk, Valeriia Polousova, Anna Pshenychna, Oksana Yarmolenko

“…(ii). rTvMS, level CII-ThII: 2000 pulses per set, 50 pulse packages, 5–7 Hz, intensity + 20–30% of the threshold of the evoked motor potential; TcES n. medianus or n. ulnaris; n. tibialis or n. peroneus: 5–10 Hz, pulse intensity corresponded to the threshold of the motor response, FES mode. …”
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Catastrophic health payments in Ghana post-National Health Insurance Scheme implementation: an analysis of service-specific health expenditures by Martin Amogre Ayanore, James Akazili, Lumbwe Chola, John Ele-Ojo Ataguba, Michel Adurayi Amenah

“…This study evaluates the incidence and intensity of catastrophic health expenditure (CHE) among Ghanaian households post-NHIS, considering OOP health spending on different health services.Methods Data came from the Ghana Living Standards Surveys rounds 6 (2012/2013) and 7 (2016/2017) and the Annual Household Income and Expenditure Survey 2022/2023. …”
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Indoor positioning tracking with magnetic field and improved particle filter by Mei Zhang, Tingting Qing, Jinhui Zhu, Wenbo Shen

“…First, adaptive four-threshold step-detection and mixed adaptive step length methods are used to obtain the travel distance in different walking states. …”
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Mathematical Simulation about Gas Transport in a Dual-Porosity Tight Gas Reservoir considering Multiple Effects by Jing Chen, Xinmin Song, Baozhu Li, Wuguang Li, Changlin Liao, Lei Yang

“…The partial differential equation and definite solution condition are discretized by a central difference method. A finite difference procedure was compiled and applied to solve this numerical model and predict the productivity of a production well in a dual-porosity tight gas reservoir. …”
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Alert Reduction and Telemonitoring Process Optimization for Improving Efficiency in Remote Patient Monitoring Programs: Framework Development Study by Job van Steenkiste, Niki Lupgens, Martijn Kool, Daan Dohmen, Iris Verberk-Jonkers

“…Additionally, a scenario analysis with different threshold values was conducted for existing blood pressure alerts to assess the impact of threshold adjustments on the overall alert burden and processing. …”
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Reliability and Quality of Complex Systems by V.S. Zhabin, A.K. Murtazov

“…The results of assessing the probability of fast-moving Perseids meteors recording by the CCD system for different recording thresholds are presented. The recording probability comes up to 1 starting from the photometric curve linear part (approximately 2m) and sharply reduces when coming up to the recording threshold.…”

The seasonality of respiratory syncytial virus and its associations with meteorological factors in Hong Kong, 2014–2023 by Qian Xiong, Zhuyao Rong, Jinjun Ran, Xiang Ren, Li Li

“…Three different approaches were applied to explore the RSV seasonality including the 50th percentile method, the average annual percentage (AAP) method, and the 2 % threshold method. …”
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Association of body roundness index with circadian syndrome: a cross-sectional study using NHANES data from 2009 to 2018 by Jin-Yan Lan, Yu-hong Song, Yu Ke, Chen-wei An, Chao-He Chen, Li-Xu Tang

“…RCS analyses demonstrated a positive association between BRI and CircS prevalence, with threshold effect analyses identifying a threshold value of BRI at 5.91. …”
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As a phenomenon: Ramadan fasting improves olfactory performance by Doğan Çakan, Hüseyin Baki Yılmaz, Harun Cansız, Haluk Çevik, Michael C. F. Tong, Begüm Bahar Yılmaz, Zeliha Kübra Çakan

“…In the evaluation of CCCRC test outcomes, significant differences were observed in the scores of butanol thresholds (p = .0001), odor identification (p = .0001), food‐related odors identification (p = .0001), and the number of normosmic individuals (p = .0001) at different times (p < .05). …”
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Effect of Nitrogen Regimes on Grain Yield, Nitrogen Utilization, Radiation Use Efficiency, and Sheath Blight Disease Intensity in Super Hybrid Rice by Di-qin LI, Qi-yuan TANG, Yun-bo ZHANG, Jian-quan QIN, Hu LI, Li-jun CHEN, Sheng-hai YANG, Ying-bin ZOU, Shao-bing PENG

“…With the same N fertilizer rate, different fertilizer-N application methods affected the RUE and grain yield. …”
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An ensemble agglomerative hierarchical clustering algorithm based on clusters clustering technique and the novel similarity measurement by Teng Li, Amin Rezaeipanah, ElSayed M. Tag El Din

“…Specifically, multiple AHC individual methods cluster the data from different aspects to form the primary clusters. …”
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To polish or not to polish? An evaluation of the accuracy in measuring depth of cure calculated by microhardness ratio by Zeynep Hale Keleş, Musa Kazım Üçüncü

“…Abstract Aim This study aimed to evaluate the influence of surface polishing on the reliability of microhardness ratio-based assessment of depth of cure in resin-based composites. Materials and methods A total of 60 composite discs (n = 10 per group) were prepared using six different resin-based composite materials. …”
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Multi-scale CNN-CrossViT network for offline handwritten signature recognition and verification by Wanying Li, Mahpirat Muhammat, Xuebin Xu, Alimjan Aysa, Kurban Ubul

“…In addition, in order to make distance metric methods more applicable for writer independent signature verification in real-world scenarios, we propose an adaptive threshold method that can automatically obtain the optimal threshold from the training set and apply it to writer independent signature verification tasks. …”
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Predicting depression risk in COPD patients: a model based on NHANES 2007–2012 data by Jinyan Zhang, Shenghong Zhou

“…Additionally, the threshold for predicting risk and the corresponding score from the nomogram were 0.57 and 93, respectively. …”
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