353 research outputs found
Decision making with both diversity supporting and opposing membership information
Online big data provides large amounts of decision information
to decision makers, but supporting and opposing information are
present simultaneously. Dual hesitant fuzzy sets (DHFSs) are useful
models for exactly expressing the membership degree of both
supporting and opposing information in decision making.
However, the application of DHFSs requires an improved distance
measure. This paper aims to improve distance measure models
for DHFSs and apply the new distance models to generate a technique
for order preference by similarity to an ideal solution
(TOPSIS) method for multiple attribute decision making (MADM)
Research of piezoelectric acoustic liner
The piezoelectric acoustic liner is a new type of acoustic liner that uses piezoelectric patches to replace the traditional mechanical structure. Its working principle is to change the resonator volume of acoustic liner by inverse piezoelectric effect. In this paper, the finite element method is used to analyze the deformation of piezoelectric patches and the acoustic performance of piezoelectric acoustic liner, when the piezoelectric patch deformation is 0.1Â mm, the noise elimination frequency band offset of the acoustic liner is about 30Â Hz, and related experiments are designed. The experimental results confirm that noise elimination frequency range of piezoelectric acoustic liner is 1100Â Hz to 1300Â Hz within the voltage range of 0Â V to 200Â V
Effectiveness of integrating primary healthcare in aftercare for older patients after discharge from tertiary hospitals-a systematic review and meta-analysis
BACKGROUND: Quality of aftercare can crucially impact health status of older patients and reduce the extra burden of unplanned healthcare resource utilisation. However, evidence of effectiveness of primary healthcare in supporting aftercare, especially for older patients after discharge are limited. METHODS: We searched for English articles of randomised controlled trials published between January 2000 and March 2022. All-cause hospital readmission rate and length of hospital stay were pooled using a random-effects model. Subgroup analyses were conducted to identify the relationship between intervention characteristics and the effectiveness on all-cause hospital readmission rate. RESULTS: A total of 30 studies with 11,693 older patients were included in the review. Compared with patients in the control group, patients in the intervention group had 32% less risk of hospital readmission within 30Â days (RRâ=â0.68, Pâ<â0.001, 95%CI: 0.56-0.84), and 17% within 6 months (RRâ=â0.83, Pâ<â0.001, 95%CI: 0.75-0.92). According to the subgroup analysis, continuity of involvement of primary healthcare in aftercare had significant effect with hospital readmission rates (Pâ<â0.001). Economic evaluations from included studies suggested that aftercare intervention was cost-effective due to the reduction in hospital readmission rate and risk of further complications. CONCLUSION: Integrating primary healthcare into aftercare was designed not only to improve the immediate transition that older patients faced but also to provide them with knowledge and skills to manage future health problems. There is a pressing need to introduce interventions at the primary healthcare level to support long-term care
Regions are Who Walk Them: a Large Pre-trained Spatiotemporal Model Based on Human Mobility for Ubiquitous Urban Sensing
User profiling and region analysis are two tasks of significant commercial
value. However, in practical applications, modeling different features
typically involves four main steps: data preparation, data processing, model
establishment, evaluation, and optimization. This process is time-consuming and
labor-intensive. Repeating this workflow for each feature results in abundant
development time for tasks and a reduced overall volume of task development.
Indeed, human mobility data contains a wealth of information. Several
successful cases suggest that conducting in-depth analysis of population
movement data could potentially yield meaningful profiles about users and
areas. Nonetheless, most related works have not thoroughly utilized the
semantic information within human mobility data and trained on a fixed number
of the regions. To tap into the rich information within population movement,
based on the perspective that Regions Are Who walk them, we propose a large
spatiotemporal model based on trajectories (RAW). It possesses the following
characteristics: 1) Tailored for trajectory data, introducing a GPT-like
structure with a parameter count of up to 1B; 2) Introducing a spatiotemporal
fine-tuning module, interpreting trajectories as collection of users to derive
arbitrary region embedding. This framework allows rapid task development based
on the large spatiotemporal model. We conducted extensive experiments to
validate the effectiveness of our proposed large spatiotemporal model. It's
evident that our proposed method, relying solely on human mobility data without
additional features, exhibits a certain level of relevance in user profiling
and region analysis. Moreover, our model showcases promising predictive
capabilities in trajectory generation tasks based on the current state,
offering the potential for further innovative work utilizing this large
spatiotemporal model.Comment: 8 page
A Genetic Variant in the Promoter Region of miR-106b-25 Cluster and Risk of HBV Infection and Hepatocellular Carcinoma
BACKGROUND: MiR-106b-25 cluster, hosted in intron 13 of MCM7, may play integral roles in diverse processes including immune response and tumorigenesis. A single nucleotide polymorphism (SNP), rs999885, is located in the promoter region of MCM7. METHODS: We performed a case-control study including 1300 HBV-positive hepatocellular carcinoma (HCC) cases, 1344 HBV persistent carriers and 1344 subjects with HBV natural clearance to test the association between rs999885 and the risk of HBV persistent infection and HCC. We also investigated the genotype-expression correlation between rs999885 and miR-106b-25 cluster in 25 pairs of HCC and adjacent non-tumor liver tissues. RESULTS: Compared with the HBV natural clearance subjects carrying rs999885 AA genotype, those with AG/GG genotypes had a decreased risk of chronic HBV infection with an adjusted odds ratio (OR) of 0.79 [95% confidence intervals (CIs)â=â0.67-0.93]. However, the AG/GG genotypes were significantly associated with an increased HCC risk in HBV persistent carriers (adjusted ORâ=â1.25, 95% CIsâ=â1.06-1.47). Expression analysis revealed that the expression level of miR-106b-25 cluster was significantly higher in AG/GG carriers than those in AA carriers in non-tumor liver tissues. CONCLUSIONS: These findings indicate that the A to G base change of rs999885 may provide a protective effect against chronic HBV infection but an increased risk for HCC in HBV persistent carriers by altering the expression of the miR-106b-25 cluster
Degradation of Toxic Organic Contaminants by Graphene Cathode in an ElectroâFenton System
A novel composite electrode was constructed by pressing graphene and CuO, using a cathode in an electroâFenton (EF) system. Cyclic voltammetry, charge/discharge curve and electrochemical impedance spectroscopy (EIS) were used to characterize the composite electrode. The degradation of a toxic organic contaminant, Terramycin, by EF system was studied in an undivided electrolysis cell. The possible degradation products of Terramycin were studied by a Fourier transformâinfrared spectrum, and the findings showed that the structure of Terramycin was damaged. The variations of hydrogen peroxide and the relative content of hydroxyl radical (.OH) during the degradation process were traced by enzyme catalysis method and fluorescence spectrometry. The results showed that the electroâcatalytic degradation of Terramycin occurred by an ·OH radical mechanism. More importantly, this asâprepared cathode was very stable and could be reused without any catalytic activity decrease, suggesting its potential application in the wastewater treatment
Allopatric divergence and hybridization within Cupressus chengiana (Cupressaceae), a threatened conifer in the northern Hengduan Mountains of western China
Having a comprehensive understanding of population structure, genetic differentiation and demographic history is important for the conservation and management of threatened species. Highâthroughput sequencing (HTS) provides exciting opportunities to address a wide range of factors for conservation genetics. Here, we generated HTS data and identified 266,884 highâquality single nucleotide polymorphisms from 82 individuals of Cupressus chengiana , to assess population genomics across the species' full range, comprising the Daduhe River (DDH), Minjiang River (MJR) and Bailongjiang River (BLJ) catchments in western China. admixture , principal components analysis and phylogenetic analyses indicated that each region contains a distinct lineage, with high levels of differentiation between them (DDH, MJR and BLJ lineages). MJR was newly distinguished compared to previous surveys, and evidence including coalescent simulations supported a hybrid origin of MJR during the Quaternary. Each of these three lineages should be recognized as an evolutionarily significant unit (ESU), due to isolation, differing genetic adaptations and different demographic history. Currently, each ESU faces distinct threats, and will require different conservation strategies. Our work shows that population genomic approaches using HTS can reconstruct the complex evolutionary history of threatened species in mountainous regions, and hence inform conservation efforts, and contribute to the understanding of high biodiversity in mountains.Funding provided by: National Natural Science Foundation of ChinaCrossref Funder Registry ID: http://dx.doi.org/10.13039/501100001809Award Number: 31622015Funding provided by: National Natural Science Foundation of ChinaCrossref Funder Registry ID: http://dx.doi.org/10.13039/501100001809Award Number: 31590821Funding provided by: National Natural Science Foundation of ChinaCrossref Funder Registry ID: http://dx.doi.org/10.13039/501100001809Award Number: 31370261Funding provided by: National Basic Research Program of China*Crossref Funder Registry ID: Award Number: 2014CB954100Funding provided by: Sichuan University Fundamental Research Funds for the Central Universities*Crossref Funder Registry ID: Award Number: SCU2019D013Funding provided by: Sichuan University Fundamental Research Funds for the Central Universities*Crossref Funder Registry ID: Award Number: SCU2018D006Funding provided by: National Basic Research Program of ChinaCrossref Funder Registry ID: http://dx.doi.org/10.13039/501100012166Award Number: 2014CB954100Funding provided by: Sichuan University Fundamental Research Funds for the Central UniversitiesCrossref Funder Registry ID: Award Number: SCU2019D013We identified 266,884 high-quality SNPs from 82 individuals to assess population genomics of Cupressus chengiana across its full range.
To get a high-quality reference, single-molecule real-time (SMRT) sequencing was used to obtain the full-length transcriptome of C. chengiana. A total of 82 samples were collected for RNA-seq. We used bwa-mem to align the quality-filtered reads of each individual to the refences sequences. We used the "mpileup" command in SAMTOOLS to identify SNPs. Data were filtered with the following processes: SNPs with a mapping quality <30, a mapping depth <10, genotyping rate <50% per group, minor allele frequency (MAF) <5%, or in 5bps windows around any indel
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