Miracle-dz/UniFAR-FTUs huggingface dataset:
Query Recombination: To Process a Large Number of Concurrent Top-k Queries towards IoT Data on an Edge Server

Multi-access Edge Computing is an important technique in the Internet of Things (IoT). It can help people observe the physical world by caching IoT data at an edge server and provide data query services. In this paper, we investigate how to process numerous concurrent top-k queries on an edge server. Since the computation resource of an edge server is limited and costly, processing concurrent top-k queries in the edge is totally different from that in the cloud. Researchers always focus on reducing time/space complexity of processing single top-k query in the cloud. However, how to process numerous top-k queries on an edge server in a cost-efficient manner still remains an open problem. In order to solve the problem, we propose the query recombination concept which aims at using the correlation of queries to reduce resource consumption of query processing. By adopting query recombination, we can make use of a small set of queries to answer the other queries and reduce resource consumption as well. We prove that constructing an optimal query recombination is NP-hard. Three approximate algorithms are proposed accordingly. Simulations are carried out to evaluate the performance of the proposed algorithms further, and the results show that the proposed algorithms are effective and efficient.
Sensorless Based Model Predictive Current Control with PM Flux-linkage Immunity for Permanent Magnet Synchronous Machines

Finite control set model predictive current control is a high control performance strategy for permanent magnet synchronous machines due to its fast dynamic and simple implementation. However, it requires accurate machine parameters for the current prediction, any parameter mismatch will cause a current prediction error resulting in deteriorated control performance. Particularly, PM flux-linkage is commonly required by the prediction model and mismatch in PM flux-linkage will cause current prediction error. This paper proposed a finite control set model predictive current control with PM flux-linkage immunity based on back-EMF sensorless control. For the sensorless control based system, the back-EMF is well estimated and regulated by the sensorless algorithm, which can be directly used in the prediction model. Thus, the knowledge of PM flux-linkage is not required in the prediction model. The proposed method is verified by experiments and compared to the conventional method in terms of steady- and dynamic-state control performance.
Federated Edge Network Utility Maximization for a Multi-Server System: Algorithm and Convergence

We propose a novel Federated Edge Network Utility Maximization (FEdg-NUM) architecture for solving a large-scale distributed network utility maximization (NUM) problem. In FEdg-NUM, clients with private utilities communicate to a peer-to-peer network of edge servers. This represents a departure from the classical distributed NUM master-slave configuration and enables distributed computing harnessing local communications. Compared to a solution using cloud synchronization via Ring AllReduce, we prove that our federated edge computing model has shorter run-time in the presence of network congestion, thanks to its configuration and its ability to make progress in the presence of intermittent links. The paper studies its convergence and run-time performance both analytically and numerically, and illustrates several possible networking applications.
NEUTRINOS FROM GAMMA-RAY BURSTS: PROPAGATION OF COSMIC RAYS IN THEIR HOST GALAXIES

Gamma-ray bursts (GRBs) are proposed as candidate sources of ultra-high-energy cosmic rays (UHECRs). We study the possibility that the PeV neutrinos recently observed by IceCube are produced by GRB cosmic rays interacting with the interstellar gas in the host galaxies. By studying the relation between the X-ray absorption column density NH and the surface star formation rate (SFR) of GRB host galaxies, we find that NH is a good indicator of the surface gas density of the host galaxies. Then we are able to calculate the neutrino production efficiency of CRs for GRBs with known NH. We collect a sample of GRBs that have both measurements of NH and accurate gamma-ray fluence and attempt to calculate the accumulated neutrino flux based on the current knowledge about GRBs and their host galaxies. When the CR intensity produced by GRBs is normalized with the observed UHECR flux above ∼ 10 19 eV ? > , the accumulated neutrino flux at PeV energies is estimated to be about ( 0.3 ± 0.2 ) × 10 − 8 GeV cm − 2 s − 1 sr − 1 ? > (per flavor) under the assumption that the GRB energy production rate follows the cosmic SFR and the favorable assumption about the CR diffusion coefficient. This flux is insufficient to account for the IceCube observations, but the estimate suffers from some assumptions in the calculation and thus we cannot rule out this scenario at present.
Effect of System Mass on The Design Performance of Double-Sided Thomson Coil Actuator

Double-Sided Thomson Coil Actuator (DS-TCA) is a proper candidate to meet the requirements of the DC modern grids Circuit Breakers (CBs). This is attributed to the topology advantages, which are simple structure, ultra-fast response of the moving component, and manageable losses compared to conventional solenoid-based actuators. Therefore, this paper presents the design of DS-TCA that is a part of a Medium Voltage (MV) hybrid CB. Furthermore, a DS-TCA has been analyzed with the consideration of the masses attached to the moving component which tends to slow down the response of the actuator. Nevertheless, the design is able to satisfy the application specifications. Moreover, mechanical analysis on the movable part has been performed to ensure safety operation for the considered design. In addition, thermal calculations have also been performed to ensure safe operation and to show the temperature rise as a function of mass.
Integrating CSI Sensing in Wireless Networks: Challenges to Privacy and Countermeasures

The path toward 6G is still long and blurred, but a few key points seem to be already decided: integration of many different access networks; adoption of massive MIMO technologies; use of frequencies above current radio spectrum up to THz and beyond; and inclusion of artificial intelligence and machine learning in standard management and operations. One additional point that is less discussed, but seems key for success, is the advanced use of channel state information (CSI) for both equalization and decoding purposes as well as for sensing ones. CSI-based sensing promises a plethora of new applications and a quantum leap in service personalization and customer-centric network management. At the same time, CSI analysis, being based on the physical characteristics of the propagated signal, poses novel threats to people's privacy and security: No software-based solution or cryptographic method above the physical layer can prevent the analysis of CSI. CSI analysis can reveal people's position or activity, allow tracking them, and discover details on the environment that today can be seen only with cameras or radars. In this article, we discuss the current status of CSI-based sensing and present some technologies that can protect people's privacy and at the same time allow legitimate use of the information carried by the CSI to offer better services.
Determination of Electromagnetic Material Properties of Ferromagnetic Stainless Steel Used in Domestic Induction Heating Cookware

Design-oriented modeling approaches, such as finite element analyses (FEA), rely on accurate material data for the modeled hardware. In the case of cookware used in domestic induction heating (IH) systems, manufacturers rarely provide the necessary data. Therefore, this contribution presents results for the electromagnetic material properties of ferromagnetic stainless steel, typically used in cookware for domestic IH. The magnetic material properties are modeled using Jiles-Atherton hysteresis model. With the used measurement method, less effort in preparation of suited material specimen is needed compared to conventional measurement methods. The presented results for the magnetic material properties are validated using Epstein frame measurements. It is shown that the hysteresis curves are similar to each other for both measurement methods. Regarding the specific electrical resistance, the results are validated using a microhmmeter. The values determined for the specific resistance show good accordance for the different measurement methods.
Rank Based Adaptive Algorithm for Route Generation in Multi Source Energy Harvesting Wireless Sensor Network

WSNs are suitable for a variety of technical applications, including monitoring, control, and surveillance of electrical plants, to name a few. Sensors will connect, conspire, contribution, and onward data without the need for a central controller in a multi-hop method. The route optimization technique is used to address the long networking problem and give the quickest path between communication nodes in order to obtain essential data. Short distances are generated as a result of the optimization, which decreases the requirement for route floods. As a result, the shortest path requirement is undesirable for WSN, as it may result in many nodes losing power and high signaling and processing expenses owing to network rebuilding. The rank is completely based on capacity of each node and energy flow route of each node. The architecture of a multi-hop wireless sensor network is viewed as a distributed computer infrastructure in this study, and a route setting method based on it is offered.
Time-Series Transcriptomic Analysis Reveals the Molecular Profiles of Diapause Termination Induced by Long Photoperiods and High Temperature in Chilo suppressalis

Survival and adaptation to seasonal changes are challenging for insects. Many temperate insects such as the rice stem borer (Chilo suppressalis) overcome the adverse situation by entering diapause, wherein development changes dynamically occur and metabolic activity is suppressed. The photoperiod and temperature act as major environmental stimuli of diapause. However, the physiological and molecular mechanisms that interpret the ecologically relevant environmental cues in ontogenetic development during diapause termination are poorly understood. Here, we used genome-wide high-throughput RNA-sequencing to examine the patterns of gene expression during diapause termination in C. suppressalis. Major shifts in biological processes and pathways including metabolism, environmental information transmission, and endocrine signalling were observed across diapause termination based on over-representation analysis, short time-series expression miner, and gene set enrichment analysis. Many new pathways were identified in diapause termination including circadian rhythm, MAPK signalling, Wnt signalling, and Ras signalling, together with previously reported pathways including ecdysteroid, juvenile hormone, and insulin/insulin-like signalling. Our results show that convergent biological processes and molecular pathways of diapause termination were shared across different insect species and provided a comprehensive roadmap to better understand diapause termination in C. suppressalis.
Possible inﬂuence of sudden stratospheric warmings on the atmospheric environment in the Beijing–Tianjin–Hebei region

Using European Centre for Medium-Range Weather Forecasts ﬁfth-generation (ERA5) and second Modern-Era Retrospective analysis for Research and Applications (MERRA-2) reanalysis and surface meteorological observation data, this study explores the possible impact of sudden stratospheric warming (SSW) events on air quality in the Beijing–Tianjin–Hebei (BTH) region. Major SSW events are divided into polar vortex displacement SSW and polar vortex split SSW. As the duration of split SSW events is longer and the stratospheric signal pulses propagate further downward than displacement SSWs, subseasonal variability of the atmospheric particulates in the BTH is larger during split SSWs. The air particulate concentration is light before the SSW onset due to the enhanced perturbation in the troposphere associated with strengthened planetary waves. The air particulate concentration around the SSW onset dates begins to rise due to weakening of the tropospheric disturbance as the enhanced planetary waves enter the stratosphere. In the decaying period of the SSW, the air particulate concentration decreases as the stratospheric negative northern annular mode (NAM) signal propagates downward. Speciﬁcally, in the pre-SSW period of displacement (split) SSW events, a wavenumber-1-like (wavenumber-2-like) anomaly pattern is strengthened. The East Asian winter monsoon intensiﬁes as the East Asian trough is deepened, especially before the split SSW event onset, leading to a cleaning period. Around the SSW onset period as the tropospheric perturbation diminishes and the East Asian winter monsoon weakens, a surge of air particulate concentration is observed. After the SSW onset, due to the downward propagation of the stratospheric negative NAM signal, cold anomalies form in northeastern East Asia, especially for split SSWs, corresponding to a cleaning period in the BHT region. The local meteorological conditions during the SSWs are also discussed.
Serum leptin differs in children with obstructive sleep apnea: A meta-analysis and PRISMA compliant article

Background: Obstructive sleep apnea (OSA) as an independent cardiovascular risk factor has been proposed, but the mechanisms underlying cardiovascular disease is far from being completely elucidated. Leptin, an inflammatory cytokine produced by adipocytes, contributes to the modulation of metabolism, respiratory control, and inflammation, which are factors associated with cardiovascular disease. Serum levels of leptin in children with OSA have shown conflicting results in previous studies. Methods: We performed a meta-analysis to clarify the correlation between leptin expression of the OSA patients following the PRISMA. PubMed, Embase, and Web of Science were systematically searched for relevant studies, and then independently screened by two researchers, and analyzed the data through STATA version 12.0. Results: In a total of 5 articles including 469 participants, the data analysis showed that serum leptin levels were elevated in children with OSA (MD, 6.36; 95% CI, 0.24–12.49, P < .001), compared to the control group. Subgroup analysis were performed based on body mass index. The results of subgroup analysis demonstrated that the serum leptin concentration was correlated with body mass index in children with OSA (MD, 9.70; 95% CI, 0.22–11.18, P < .001). Conclusions: The serum leptin levels were elevated in children with OSA, compared to the control group. It could add to our developing understanding of the pathogenesis and potential treatments for children with OSA, and help us to recognize the relevance of OSA in determining cardiovascular issues among children.
Sedentary Behavior and Physical Functioning in Middle-Age and Older Adults Living in the United States: The Reasons for Geographic and Racial Differences in Stroke Study

ABSTRACT Purpose Sedentary behavior is associated with poor physical function in older adults, which can lead to accelerated skeletal muscle aging (sarcopenia) and premature mortality. We examined the independent and joint effects of sedentary behavior and moderate to vigorous intensity physical activity (MVPA) with measures of physical functioning. Methods We studied 5408 participants in the REasons for Geographic and Racial Differences in Stroke study who wore a hip-mounted accelerometer over seven consecutive days (2009–2013) and had self-reported and directly observed physical function (time walk, chair stand test) measured during an in-home visit conducted from 2013 to 2016. Results Greater sedentary time was significantly associated with poorer chair stand and timed walk scores. Substituting 30 min of sedentary time with 30 min of MVPA was associated with significant improvements in chair stands (β −0.57; P = 0.007) and timed walk (β −0.36; P = 0.01). Similar, but less robust, findings were observed for reallocations of sedentary time to light-intensity physical activity. In joint association analyses, high sedentary time in combination with low MVPA (but not in combination with high MVPA) was associated with poorer physical function compared with the referent group (low sedentary time/high MVPA; P < 0.001 for all). Conclusions Greater time spent being sedentary was associated with worse physical functioning outcomes. However, reallocations of sedentary time to light-intensity physical activity, and especially MVPA, were associated with more favorable physical functioning. Interventions aimed to increase MVPA and reduce sedentary behavior should be a priority, especially among populations at greatest risk for sarcopenia and physical function decline.
The safety of esophageal cancer surgery during COVID-19

Background: The ongoing coronavirus disease 2019 (COVID-19) pandemic has drastically challenged the safety of on esophageal cancer (EC) surgery during COVID-19. The study aimed to evaluate the safety of EC surgery during the COVID-19 pandemic. Methods: This systematic review was performed in accordance with the PRISMA-P 2015 guidelines and registered in PROSPERO (registration number: CRD42022335164). A systematic search of PubMed, Embase, Cochrane Library, Web of Science, Medline, Chinese National Knowledge Infrastructure database, Chinese Scientific Journal database, and Wan Fang database was conducted to identify potentially relevant publications from January 2020 to May 2022. All data were independently extracted by two researchers. We will apply a fixed-effect model or random effect model basis on the heterogeneity test and employ with RevMan 5.4. 1 software for data synthesis. The dichotomous surgical outcomes used risk ratios or risk differences, and for continuous surgical outcomes, mean differences (MD) or standardized MD, both with 95% confidence intervals were used. The primary outcomes were postoperative complications, anastomotic leaks, and mortality. The secondary outcomes were total hospital stay, postoperative stay, preoperative waiting, operation time, blood loss, transfusion, postoperative intensive care unit (ICU) stay, number of patients needing ICU stay, and 30-day readmission. Results: This study will comprehensively summarize the high-quality trials to determine the safety of EC surgery during COVID-19. Conclusion: Our systematic review and meta-analysis will present evidence for the safety of EC surgery during COVID-19.
The clinical efficacy of Shenmai injection in the prophylaxis and treatment of intradialytic hypotension: A protocol for systematic review and meta-analysis

Background: Intradialytic hypotension (IDH) is a common complication in hemodialysis. IDH can induce vomiting, chest tightness and syncope, and hemodialysis shall be discontinued in patients with severe IDH. As is revealed in related studies, Shenmai injection (SMI) can be used in the prophylaxis and treatment of IDH. However, there is still a lack of consensus about the efficacy among reported studies, which cannot provide compelling evidence. Therefore, a meta-analysis was conducted in this study to further investigate the efficacy and safety of SMI in the prophylaxis and treatment of IDH. Methods: PubMed, Web of Science, Scopus, Cochrane Library, Embase, China Scientific Journal Database, China National Knowledge Infrastructure, Chinese Biomedical Literature Database, and Wanfang Data were systematically retrieved from their establishment to June 2022. Subsequently, literature screening, data extraction, quality evaluation and cross-checking of results were performed according to the Cochrane Handbook. Besides, a meta-analysis was performed with the assistance of Revman 5.3 software. Results: This study will evaluate whether SMI is effective in the prophylaxis and treatment of IDH. Conclusions: The latest evidence for the efficacy and safety of SMI in the prevention and treatment of IDH can be provided through this study.
Association of SLC22A1, SLC22A2, SLC47A1, and SLC47A2 Polymorphisms with Metformin Efficacy in Type 2 Diabetic Patients

Response to metformin, first-line therapy for type 2 diabetes mellitus (T2DM), exists interindividual variation. Considering that transporters belonging to the solute carrier (SLC) superfamily are determinants of metformin pharmacokinetics, we evaluated the effects of promoter variants in organic cation transporter 1 (OCT1) (SLC22A1 rs628031), OCT2 (SLC22A2 rs316019), multidrug and toxin extrusion protein 1 (MATE1) (SLC47A1 rs2289669), and MATE2 (SLC47A2 rs12943590) on the variation in metformin response. The glucose-lowering effects and improvement of insulin resistance of metformin were assessed in newly diagnosed, treatment-naive type 2 diabetic patients of Han nationality in Chaoshan China (n = 93) receiving metformin. Fasting plasma glucose (FPG), fasting insulin (FINS), glycated hemoglobin A1 (HbA1C), homeostasis model assessment-insulin sensitivity (HOMA-IS), and homeostasis model assessment-insulin resistance (HOMA-IR) were the main metformin efficacy measurements. There were significant correlations between both SLC47A1 rs2289669 and SLC47A2 rs12943590 and the efficacy of metformin in individuals with T2DM. In normal weight T2DM patients, significant associations between the AA and GG genotypes of the rs2289669 variant of SLC47A1 and a greater reduction in FINS and HOMA-IR were detected. A significant correlation was observed between the AG genotype of the rs12943590 polymorphism of SLC47A2 and a greater reduction in HOMA-IR. Gene–environment interaction analysis showed that in the FINS interaction model, the second-order of dose30_g-SLC47A2 rs12943590 was statistically significant. The variants of SLC47A1 rs2289669 and SLC47A2 rs12943590 could be predictors of insulin resistance in type 2 diabetic patients treated with metformin. The second-order interaction of dose30_g-SLC47A2 rs12943590 may have a significant effect on FINS in patients with T2DM on metformin treatment. These findings suggest that promoter variants of SLC47A1 and SLC47A2 are important determinants of metformin transport and response in type 2 diabetes mellitus.
COVID-19 Vaccines on TikTok: A Big-Data Analysis of Entangled Discourses

Focusing on social media affordances and China’s social/political context, the present study analyzed the digital communication practices about COVID-19 vaccines on a popular social media platform—TikTok—which is called DouYin in China. Overall, this study identified five major forces partaking in constructing the discourses, with government agencies and state media being the dominant contributors. Furthermore, video posters demonstrated different patterns of utilizing social media affordances (e.g., hashtags) in disseminating their messages. The top hashtags adopted by state media were more representative of international relations and Taiwan; those by government agencies were of updates on pandemic outbreaks; those by individual accounts were of mainstream values and health education; those by commercial media were of celebrities and health education; those by enterprise accounts were of TikTok built-in marketing hashtags. The posted videos elicited both cognitive and affective feedback from online viewers. Implications of the findings were discussed in the context of health communication and global recovery against the backdrop of the COVID-19 pandemic and Chinese culture.