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Semantic Causality Evaluation of Correlation Analysis Utilizing Large Language Models
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作者 Adam Dudáš 《Computers, Materials & Continua》 2026年第5期2246-2269,共24页
It is known that correlation does not imply causality.Some relationships identified in the analysis of data are coincidental or unknown,and some are produced by real-world causality of the situation,which is problemat... It is known that correlation does not imply causality.Some relationships identified in the analysis of data are coincidental or unknown,and some are produced by real-world causality of the situation,which is problematic,since there is a need to differentiate between these two scenarios.Until recently,the proper−semantic−causality of the relationship could have been determined only by human experts from the area of expertise of the studied data.This has changed with the advance of large language models,which are often utilized as surrogates for such human experts,making the process automated and readily available to all data analysts.This motivates the main objective of this work,which is to introduce the design and implementation of a large language model-based semantic causality evaluator based on correlation analysis,together with its visual analysis model called Causal heatmap.After the implementation itself,the model is evaluated from the point of view of the quality of the visual model,from the point of view of the quality of causal evaluation based on large language models,and from the point of view of comparative analysis,while the results reached in the study highlight the usability of large language models in the task and the potential of the proposed approach in the analysis of unknown datasets.The results of the experimental evaluation demonstrate the usefulness of the Causal heatmap method,supported by the evident highlighting of interesting relationships,while suppressing irrelevant ones. 展开更多
关键词 CORRELATION CAUSALITY correlation analysis large language models VISUALIZATION
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Genetic variation in growth characteristics and stem quality of Acacia hybrid across three distinct locations in Vietnam
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作者 Hieu Van Trinh Kien Duc Nguyen +1 位作者 Duong Anh La Yue Li 《Journal of Forestry Research》 2026年第2期1-15,共15页
This study investigates the genetic variability and environmental adaptability of Acacia hybrid clones across three distinct ecological regions,providing insights into growth characteristics and stem quality for futur... This study investigates the genetic variability and environmental adaptability of Acacia hybrid clones across three distinct ecological regions,providing insights into growth characteristics and stem quality for future breeding strategies.42 natural hybrid clones were evaluated over a five-year period in three clonal trials in northern,central and southern Vietnam for height(HT),diameter at breast height(DBH),volume(VOL),trunk straightness(STR),branch size(BRA)and survival.Significant clonal differences were found in all traits across all three regions.From age 2-5,the clone repeatability(H_(C)^(2))for growth traits improved from 0.19 to 0.59,indicating substantial genetic control.Genotypic coefficients of variation(CVG)for volume ranged from 21%to 34%,suggesting significant potential for genetic improvement.Site-to-site genotypic correlations ranged from 0.53 to 0.78,pointing to the existence of genotype-environment interactions.Clones derived from Acacia mangium material demonstrated enhanced growth,while the hybrid clones exhibited superior stem quality,particularly in terms of straightness.The findings emphasize the importance of selecting clones that are adapted to specific environmental conditions,with both growth and quality traits considered in breeding programs. 展开更多
关键词 Acacia hybrid Clonal repeatability Inter-trait correlation Age-age correlation Genotype-environment interaction
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Correlation Analysis of Anatomical and Pathological Characteristics of the Respiratory- Circulatory System
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作者 Min Li 《Journal of Clinical and Nursing Research》 2026年第2期155-161,共7页
The respiratory-circulatory system, including organs such as the nose, pharynx, larynx, trachea, bronchi, and heart, is an organic community responsible for ventilation and gas exchange. The integrity of its anatomica... The respiratory-circulatory system, including organs such as the nose, pharynx, larynx, trachea, bronchi, and heart, is an organic community responsible for ventilation and gas exchange. The integrity of its anatomical structure directly affects the evolution of pathological processes, and the analysis of their correlation is a core entry point for clinical disease diagnosis, treatment, and mechanism research. Based on this, this paper mainly explores the correlation between the anatomical and pathological characteristics of the respiratory-circulatory system, aiming to provide anatomical and pathological theoretical support for clinical accurate diagnosis, targeted therapy, and prognosis evaluation. 展开更多
关键词 Respiratory-circulatory system PATHOLOGY ANATOMY CHARACTERISTICS CORRELATION
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Genetic and morpho-physiological attributes of drought resistance in Capsicum accessions
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作者 Kyu Kyu Thin Soobin Lee Je Min Lee 《Horticultural Plant Journal》 2026年第2期402-413,共12页
Drought stress is one of the factors limiting pepper production in water-stressed regions.It affects growth and development by inducing morphological,biochemical,and physiological changes.Breeding drought-resistant va... Drought stress is one of the factors limiting pepper production in water-stressed regions.It affects growth and development by inducing morphological,biochemical,and physiological changes.Breeding drought-resistant varieties is a sustainable strategy to mitigate drought,therefore,reliable evaluation systems are essential to identify drought-resistant pepper accessions.In this study,100 pepper accessions were screened for drought resistance under highly controlled conditions at the vegetative stage.Selected accessions exhibited a significantly higher recovery rate after water-deficiency and showed durable resistance under greenhouse conditions.Correlation analysis between drought resistance with morphological and physiological traits showed that the recovery rate was positively correlated with root length and relative water content,and negatively correlated with plant height and leaf area.Gene expression analysis showed that the drought-resistant accession exhibited higher expression levels of drought-responsive genes under drought stress.Among the accessions,anthocyanin-accumulating peppers showed more significant drought resistance compared to other accessions.When the MYB transcription factor An2,the genetic determinant of anthocyanin accumulation,was silenced,drought resistance was significantly reduced.Drought-resistant accessions with favorable adaptive traits identified in this study will be valuable in various breeding programs to generate new pepper cultivars to cope with climate change. 展开更多
关键词 PEPPER DROUGHT Morpho-physiological traits Correlation analysis ANTHOCYANIN
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Dissecting mitogenomic conflictto illuminate angiosperm deep phylogeny:Sequence and architectural evidence
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作者 Liyun Nie Jie Wang +9 位作者 Lei Huang Jiali Kong Bao Nie Luke R.Tembrock Shanshan Dong Ravi Tiwari Hui Wang Shenglong Kan Xinhui Zou Zhiqiang Wu 《Plant Diversity》 2026年第1期41-58,共18页
Deep relationships in the angiosperm tree of life remain highly controversial.To address this,we first assembled the complete mitochondrial genomes for Ceratophyllum demersum and Chloranthus sessilifolius,confirming a... Deep relationships in the angiosperm tree of life remain highly controversial.To address this,we first assembled the complete mitochondrial genomes for Ceratophyllum demersum and Chloranthus sessilifolius,confirming a well-supported sister relationship that starkly conflicts with nuclear and plastid data.To dissect this classic cyto-nuclear conflict,we developed the‘PhyloForensics’framework,a novel diagnostic approach to systematically identify sources of phylogenetic instability.This framework revealed that signal heterogeneity(topological entropy variance)and information content(the proportion of informative sites)are the primary drivers of gene-tree conflict.Empirically validating this,we show that removing a small subset of“loudly conflicted”genes resolves deep-level incongruence,yielding a single,highly-supported topology previously obscured by noise.Finally,complementing this sequence-based resolution,we demonstrate that mitogenome architecture provides powerful phylogenetic signals,revealing predictable,mitogenome-wide evolutionary patterns,such as a significant negative correlation between branch length and both GC content and RNA editing sites.By integrating a validated conflict-resolution framework with architectural genomics,our study provides a comprehensive strategy for navigating the complexities of deep evolutionary histories. 展开更多
关键词 Angiosperm phylogeny Ceratophyllales Chloranthales Evolutionary correlation Mitochondrial genomes
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Simulation on mechanochemical coupling of rotary biomotors F_(1) and V_(1)
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作者 Liqiang Dai Yao-Gen Shu Zhong-Can Ouyang 《Chinese Physics B》 2026年第2期659-667,共9页
The F_(1)-ATPase and V_(1)-ATPase are rotary biomotors.Alignment of their amino acid sequences,which originate from bovine heart mitochondria(1BMF)and Enterococcus hirae(3VR6),respectively,demonstrates that the segmen... The F_(1)-ATPase and V_(1)-ATPase are rotary biomotors.Alignment of their amino acid sequences,which originate from bovine heart mitochondria(1BMF)and Enterococcus hirae(3VR6),respectively,demonstrates that the segment forming the ATP catalytic pocket is highly conserved.Single-molecule experiments,however,have revealed subtle differences in efficiency between the F_(1) and V_(1) motors.Here,we perform both atomistic and coarse-grained molecular dynamics simulations to investigate the mechanochemical coupling and coordination in F_(1) and V_(1) ATPase.Our results show that the correlation between conformational changes in F_(1) is stronger than that in V_(1),indicating that the mechanochemical coupling in F_(1) is tighter than in V_(1).Moreover,the unidirectional rotation of F_(1) is more processive than that of V_(1),which accounts for the higher efficiency observed in F_(1) and explains the occasional backward steps detected in single-molecule experiments on V_(1). 展开更多
关键词 rotary biomotor CORRELATION mechanochemical coupling SIMULATION
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Correlation between life satisfaction,pleasure level,and negative emotion in patients with chronic renal failure
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作者 Lin-Lin Zhang You-Li Zhang +3 位作者 Ting Liu Jian Wang Chen Chen Xiao-Yu Wang 《World Journal of Psychiatry》 2026年第1期291-298,共8页
BACKGROUND Anxiety,depression,and other negative emotions are common among patients with chronic renal failure(CRF).Analyzing the factors related to negative emotions is necessary to provide targeted nursing care.AIM ... BACKGROUND Anxiety,depression,and other negative emotions are common among patients with chronic renal failure(CRF).Analyzing the factors related to negative emotions is necessary to provide targeted nursing care.AIM To explore the correlations among life satisfaction,pleasure levels,and negative emotions in patients with CRF.METHODS One hundred patients with CRF who received therapy at the First Affiliated Hospital of Jinzhou Medical University between December 2022 and February 2025 were included.The Depression,Anxiety,and Stress Scale(DASS-21),Satisfaction with Life Scale(SWLS),and Temporal Experience of Pleasure Scale(TEPS)were used to evaluate negative emotions,life satisfaction,and pleasure level,respectively.Pearson’s correlation coefficient analyzed the correlation between life satisfaction,pleasure level,and negative emotions.Linear regression analysis identified the factors affecting negative emotions.RESULTS The average DASS-21 score among patients with CRF was 51.90±2.30,with subscale scores of 17.90±1.50 for depression,18.53±1.18 for anxiety,and 15.47±2.36 for stress,all significantly higher than the domestic norm(P<0.05).The average SWLS score was 22.17±4.90.Correlation analysis revealed a negative correlation between the SWLS and total DASS-21 scores(P<0.05),but not with the individual depression,anxiety,or stress dimensions.The average TEPS score was 67.80±8.34.TEPS scores were negatively correlated with the DASS-21 score and the stress dimension(P<0.05),but not with depression or anxiety.Linear regression analysis showed that TEPS scores significantly influenced DASS-21 scores(P<0.05).CONCLUSION Patients with CRF experience high levels of negative emotions,which are negatively correlated with life satisfaction and pleasure.Furthermore,pleasure level had an impact on negative emotions. 展开更多
关键词 Chronic renal failure HEMODIALYSIS Negative emotion Life satisfaction PLEASURE CORRELATION
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Improving Online Restore Performance of Backup Storage via Historical File Access Pattern
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作者 Ruidong Chen Guopeng Wang +5 位作者 Jingyuan Yang Ziyu Wang Fang Zou Jia Sun Xingpeng Tang Ting Chen 《Computers, Materials & Continua》 2026年第3期1536-1558,共23页
The performance of data restore is one of the key indicators of user experience for backup storage systems.Compared to the traditional offline restore process,online restore reduces downtime during backup restoration,... The performance of data restore is one of the key indicators of user experience for backup storage systems.Compared to the traditional offline restore process,online restore reduces downtime during backup restoration,allowing users to operate on already restored files while other files are still being restored.This approach improves availability during restoration tasks but suffers from a critical limitation:inconsistencies between the access sequence and the restore sequence.In many cases,the file a user needs to access at a given moment may not yet be restored,resulting in significant delays and poor user experience.To this end,we present Histore,which builds on the user’s historical access sequence to schedule the restore sequence,in order to reduce users’access delayed time.Histore includes three restore approaches:(i)the frequency-based approach,which restores files based on historical file access frequencies and prioritizes ensuring the availability of frequently accessed files;(ii)the graph-based approach,which preferentially restores the frequently accessed files as well as their correlated files based on historical access patterns,and(iii)the trie-based approach,which restores particular files based on both users’real-time and historical access patterns to deduce and restore the files to be accessed in the near future.We implement a prototype of Histore and evaluate its performance from multiple perspectives.Trace-driven experiments on two datasets show that Histore significantly reduces users’delay time by 4-700×with only 1.0%-14.5%additional performance overhead. 展开更多
关键词 Online restore access pattern correlation graph TRIE
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Risk factors for kinesiophobia after total hip arthroplasty:a prospective observational study
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作者 Xiao-Lin Zuo Jing-Wei Zhang +2 位作者 Jing Li Yan Wen Shi-Xin Zhao 《Frontiers of Nursing》 2026年第1期25-31,共7页
Objective:To investigate the related factors of motility after total hip arthroplasty(THA).Methods:The convenience sampling method was used to include 213 patients receiving THA in our hospital from June 2020 to June ... Objective:To investigate the related factors of motility after total hip arthroplasty(THA).Methods:The convenience sampling method was used to include 213 patients receiving THA in our hospital from June 2020 to June 2023.They were divided into 2 groups according to the occurrence of kinesiophobia after THA.The demographic data of the 2 groups were analyzed by single-factor analysis.The factors with statistically significant differences were analyzed by binary logistic regression as independent variables.Finally,Spearman analysis was used to analyze the relationship between risk factors and the degree of kinesiophobia.Results:Among 213 THA patients,38 patients were diagnosed with kinetophobia,and the incidence of kinetophobia was 17.84%.visual analogue scale(VAS)and pain duration before operation were higher in patients with kinetophobia than in patients without kinetophobia.The scores of education level,self-efficacy,and social support were significantly lower than those of the non-phobia group,with statistical significance(P<0.05).Logistic regression analysis showed that VAS was a risk factor for kinetophobia after THA.Education level and self-efficacy were protective factors to reduce the occurrence of kinetophobia after THA(P<0.05).Spearman correlation analysis showed that the degree of pain(r=0.697,P<0.001)was positively correlated with the degree of kinetophobia,while the degree of education(r=-0.647,P<0.001)and self-efficacy(r=-0.756,P<0.001)were negatively correlated with the degree of kinetophobia.Conclusions:The degree of pain is a risk factor of kinesiophobia after THA,and it is positively correlated with the degree.Educational level and self-efficacy were protective factors to reduce the incidence of kinesiophobia and were negatively correlated with the degree of kinesiophobia. 展开更多
关键词 correlation analysis KINESIOPHOBIA risk factors total hip arthroplasty ARTHROPLASTY adult orthopaedics
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A Study on the Correlation between Peer Caring Behavior and Empathy among Undergraduate Nursing Students
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作者 Fang Xu Juan Xiao +2 位作者 Xiaofang Hu Jianfeng Xu Shaoyan Yuan 《Journal of Clinical and Nursing Research》 2026年第2期343-349,共7页
Objective: To understand the current status of peer caring behavior and empathy among undergraduate nursing students and to explore the relationship between the two. Method: Using the convenience sampling method, a qu... Objective: To understand the current status of peer caring behavior and empathy among undergraduate nursing students and to explore the relationship between the two. Method: Using the convenience sampling method, a questionnaire survey was conducted among 292 nursing students from a medical college in Jiangxi Province, using the Peer Caring Behavior Scale and the Jefferson Scale of Empathy. Results: The score for peer caring behavior among undergraduate nursing students was 85.00 (78.00-92.00), and the score for empathy was 101.00 (92.00-110.00). A positive correlation was found between the two (r = 0.362, p < 0.05). Conclusion: The level of peer caring behavior among undergraduate nursing students is above average, while their empathy level is moderate, with a positive correlation between the two. This suggests that nursing educators should strengthen the development of peer caring behavior, which may help enhance the empathy of undergraduate nursing students. 展开更多
关键词 Undergraduate nursing students Peer caring behavior EMPATHY CORRELATION
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Unraveling shallow landslides in the Qinling Mountains:Novel insights into vegetation-hydrology driven mechanisms
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作者 CHEN Xing SHEN Yanjun +6 位作者 NING Yibing SHI Bailei ZHU Jinyu LI Sirui LI Zijian LYU You PENG Jianbing 《Journal of Mountain Science》 2026年第2期669-688,共20页
As a critical ecological barrier in China,the Qinling Mountains see their ecological functions significantly impaired by frequent shallow landslides.However,existing research on the distribution characteristics and dr... As a critical ecological barrier in China,the Qinling Mountains see their ecological functions significantly impaired by frequent shallow landslides.However,existing research on the distribution characteristics and driving mechanisms of such landslides remains relatively limited.To address this knowledge gap,the present study integrated data analysis,field investigations,and remote sensing interpretation to construct a landslide database for the core area of the Qinling Mountains,and systematically analyzed the spatial patterns,development characteristics,and environmental driving factors of shallow landslides.The results reveal that shallow landslides are predominantly small-to-medium in scale,concentrated in regions with an altitude of 800–1000 m and a slope gradient of approximately 30°,with a distinct tendency to develop on sunny(southfacing)slopes.The occurrence frequency of these landslides exhibits a significant positive correlation with the soil moisture content of the weathered layer and the degree of groundwater enrichment in the study area.Specifically,these landslides are mainly developed in bedrock fissure water zones and karst fissure water zones with favorable water-bearing capacity,indicating that rainfall and surface hydrological processes are the key triggering factors for shallow landslides.Notably,vegetation exerts a mediating role in the"vegetation-hydrology-landslide"system:shallow landslides occur most frequently in areas with artificial or shrub-grass vegetation,peaking at a moderate coverage of 50%–60%.This peak suggests that vegetation within this range is ineffective at regulating soil moisture,while the interaction between specific vegetation types and hydrological enrichment further exacerbates landslide risk.By prioritizing the weights of vegetation and hydrological factors,we enhanced the information quantity model,which significantly improved its performance and increased the AUC value to 0.83.These findings confirm the pivotal roles of vegetation and hydrological factors,thereby providing a robust scientific basis for targeted landslide prevention and control in this region. 展开更多
关键词 Qinling Mountains Shallow landslides Distribution characteristics Driving mechanism Correlation analysis Landslide susceptibility
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Characteristics of gas−liquid flow in double-side-blown systems computed by CFD
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作者 Wei WANG Hong-liang ZHAO +1 位作者 Feng-qin LIU Hong Yong SOHN 《Transactions of Nonferrous Metals Society of China》 2026年第2期659-676,共18页
A CFD-based numerical model was employed to quantitatively analyze the flow characteristics of double-side-blown gas−liquid flow.Key parameters were extracted,and Spearman correlation analysis was used to quantify the... A CFD-based numerical model was employed to quantitatively analyze the flow characteristics of double-side-blown gas−liquid flow.Key parameters were extracted,and Spearman correlation analysis was used to quantify the relationships among bubble behavior,circulating flow,and liquid oscillations.The results show that periodic bubble behavior under steady injection drives the circulating flow of the liquid on both sides.The asynchronism of bubble behavior on both sides results in the alternation of circulating intensity,which significantly enhances gas−liquid mixing efficiency at certain liquid levels of 200 and 220 mm.Flow patterns of the double-side-blown process are classified into weak circulation,strong−weak alternating circulation,and strong circulation modes based on the influence of circulating flows on the penetration depth.The penetration depth in the strong−weak alternating circulation mode is generally greater than that in the single-side-blown process.The imbalance of circulating intensities on both sides primarily leads to the stable fluctuation in the injecting direction,which reveals the appearance of periodic oscillations in the molten bath.The effect of control parameters such as liquid level and gas flow rate on the liquid oscillations were discussed. 展开更多
关键词 numerical simulation side-blown furnace flow characteristics bubble behavior penetration depth Spearman correlation analysis
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Second-order correlated interference with multi-wavelength thermal-light beams
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作者 De-Sheng Wang Yi-Ning Zhao +5 位作者 Lingxin Kong Su-Heng Zhang Chong Wang Cheng Ren Yuehua Su De-Zhong Cao 《Chinese Physics B》 2026年第2期374-382,共9页
A method for correlating thermal light over a wide spectral range is proposed.A multi-wavelength pseudothermal source,prepared by projecting laser beams of multiple wavelengths(650 nm,635 nm,532 nm,and 473 nm)onto a m... A method for correlating thermal light over a wide spectral range is proposed.A multi-wavelength pseudothermal source,prepared by projecting laser beams of multiple wavelengths(650 nm,635 nm,532 nm,and 473 nm)onto a moving thin ground glass plate,is employed in a double-slit interference experiment.The ground glass plate induces random phase differences between light beams of different wavelengths passing through it.This initial random phase difference significantly influences the high-order intensity correlation functions of multi-wavelength thermal beams.Experimentally,second-order correlated interference patterns,including subwavelength interference,of pseudothermal beams with different wavelengths are observed in the intensity correlation measurements.This method facilitates applications of correlated thermal photons in quantum information processing and quantum imaging. 展开更多
关键词 correlated interference multi-wavelength thermal light second-order correlation function
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Shared genetic link and causal inference between blood lipids,lipid-lowering drugs and amyotrophic lateral sclerosis
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作者 Kailin Xia Ninghao Huang +7 位作者 Yajun Wang Gan Zhang Lu Tang Linjing Zhang Minhao Yao Zhonghua Liu Tao Huang Dongsheng Fan 《Neural Regeneration Research》 2026年第8期3824-3830,共7页
Growing evidence suggests that abnormal lipid metabolism occurs in amyotrophic lateral sclerosis,even in the presymptomatic stage,implying an etiologic link.However,the genetic mechanism underlying altered lipid level... Growing evidence suggests that abnormal lipid metabolism occurs in amyotrophic lateral sclerosis,even in the presymptomatic stage,implying an etiologic link.However,the genetic mechanism underlying altered lipid levels in amyotrophic lateral sclerosis remains elusive.Therefore,in this study,we performed genetic correlation analysis,a cross-trait meta-analysis,tissue-specific enrichment analysis,and bidirectional two-sample Mendelian randomization analysis of European population to explore whether there is a genetic and causal relationship between lipids and amyotrophic lateral sclerosis.The effect of lipid-lowering drugs on amyotrophic lateral sclerosis was also evaluated using a drug target Mendelian randomization approach.The results showed a positive genetic correlation between amyotrophic lateral sclerosis and both high-density lipoprotein cholesterol and apolipoprotein A1 and identified 71 independent shared loci between amyotrophic lateral sclerosis and high-density lipoprotein cholesterol,as well as 55 independent shared loci between amyotrophic lateral sclerosis and apolipoprotein A1.These shared loci were enriched in the lipid metabolic pathway and the alcohol metabolic pathway.Further Mendelian randomization analysis targeting lipid-lowering drugs showed that single nucleotide polymorphisms within the ACLY and PCSK9 genes had a protective effect against amyotrophic lateral sclerosis risk by decreasing low-density lipoprotein cholesterol.The combination of ACLY and PCSK9 inhibitors has a greater protective effect on amyotrophic lateral sclerosis risk than that of PCSK9 inhibitors alone.In summary,there is a common genetic structure between lipids and amyotrophic lateral sclerosis.Mendelian randomization analysis supports an association between elevated blood lipids and the risk of developing amyotrophic lateral sclerosis,and the use of ACLY or PCSK9 inhibitors may improve disease prognosis. 展开更多
关键词 amyotrophic lateral sclerosis genetic correlation genetics instrumental variables lipid-lowering drug LIPIDS Mendelian randomization METABOLISM nerve regeneration neurodegenerative disease risk factor
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Multilevel Military Image Encryption Based on Tri-Independent Keying Approach
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作者 Shereen S.Jumaa Mohsin H.Challoob Amjad J.Humaidi 《Computers, Materials & Continua》 2026年第4期1548-1564,共17页
Military image encryption plays a vital role in ensuring the secure transmission of sensitive visual information from unauthorized access.This paper proposes a new Tri-independent keying method for encrypting military... Military image encryption plays a vital role in ensuring the secure transmission of sensitive visual information from unauthorized access.This paper proposes a new Tri-independent keying method for encrypting military images.The proposed encryption method is based on multilevel security stages of pixel-level scrambling,bitlevel manipulation,and block-level shuffling operations.For having a vast key space,the input password is hashed by the Secure Hash Algorithm 256-bit(SHA-256)for generating independently deterministic keys used in the multilevel stages.A piecewise pixel-level scrambling function is introduced to perform a dual flipping process controlled with an adaptive key for obscuring the spatial relationships between the adjacent pixels.Adynamicmasking scheme is presented for conducting a bit-level manipulation based on distinct keys that change over image regions,providing completely different encryption results on identical regions.To handle the global correlation between large-scale patterns,a chaotic index-map system is employed for shuffling image regions randomly across the image domain based on a logistic map seeded with a private key.Experimental results on a dataset of military images show the effectiveness of the proposed encryption method in producing excellent quantitative and qualitative results.The proposed method obtains uniform histogram distributions,high entropy values around the ideal(≈8 bits),Number of Pixel Change Rate(NPCR)values above 99.5%,and low Peak Signal-to-Noise Ratio(PSNR)over all encrypted images.This validates the robustness of the proposed method against cryptanalytic attacks,verifying its ability to serve as a practical basis for secure image transmission in defense systems. 展开更多
关键词 Military image encryption pixel-level scrambling bit-level manipulation block-level shuffling password hashing dynamic encryption key spatial pixel correlation chaotic system
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Probing QCD confinement with spin-spin correlation in proton-proton collisions
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作者 Zuo-Tang Liang Qing-Hua Xu Jin-Long Zhang 《Nuclear Science and Techniques》 2026年第5期1-4,共4页
An important feature of quantum chromodynamics(QCD)is that the strong force grows as the distance between partons increases,which confines partons into hadrons,commonly known as QCD confinement.Perturbative QCD(pQCD)d... An important feature of quantum chromodynamics(QCD)is that the strong force grows as the distance between partons increases,which confines partons into hadrons,commonly known as QCD confinement.Perturbative QCD(pQCD)does not work at large distance,such as the length scale of a hadron,which is the regime of non-perturbative QCD.The detailed QCD mechanisms through which confinement occurs from partons to hadrons(usually known as hadronization),and how it manifests itself in partonic structure of hadrons(usually known as parton distribution),remain unresolved puzzles of first-principle QCD calculations. 展开更多
关键词 spin spin correlation quantum chromodynamics qcd PARTONS QCD confinement HADRONS non perturbative QCD strong force proton proton collisions
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Octupole correlations of the K^(π)=5/2^(+)ground-state band in^(229)Th
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作者 Yuan-Yuan Wang Peng-Wei Zhao 《Chinese Physics B》 2026年第2期156-161,共6页
The octupole correlations of the K^(π)=5/2^(+)ground state and the rotational spectrum built on it in^(229)Th are studied using the microscopic relativistic density functional theory on a three-dimensional lattice sp... The octupole correlations of the K^(π)=5/2^(+)ground state and the rotational spectrum built on it in^(229)Th are studied using the microscopic relativistic density functional theory on a three-dimensional lattice space and the reflection-asymmetric triaxial particle rotor model.It is found that^(229)Th has a ground state with static axial octupole and quadrupole deformations.The occurrence of octupole correlations,driven by the octupole deformation,is analyzed through the evolution of single-particle levels around the Fermi surface.The experimental energy spectrum and the electromagnetic transition probabilities,including B(E2)and B(M1),are reasonably well reproduced. 展开更多
关键词 octupole correlation relativistic density functional theory reflection-asymmetric triaxial particle rotor model rotational spectrum
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Geochemical Characteristics and Origin of Natural Gas from the Ordovician Middle Gas-bearing Assemblage in the Ordos Basin:A Case Study of the Daniudi Gas Field
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作者 WU Xiaoqi WANG Ping +5 位作者 LIU Quanyou NI Chunhua ZHANG Yi ZHU Dongya JIA Huichong XIANG Liange 《Acta Geologica Sinica(English Edition)》 2026年第1期188-199,共12页
The Ordovician Majiagou Formation(O1m)in the Ordos Basin is a crucial exploration field for natural gas,and exploration of the Ordovician middle assemblage(O_(1)m_(5)^(5-7))has recently yielded great breakthrough.The ... The Ordovician Majiagou Formation(O1m)in the Ordos Basin is a crucial exploration field for natural gas,and exploration of the Ordovician middle assemblage(O_(1)m_(5)^(5-7))has recently yielded great breakthrough.The Daniudi gas field provides a good case study to determine the gas source for the strata.The O_(1)m_(5)^(5-7)gas displays C1/C1-5 ratios of 0.932-0.985 and CO_(2)contents of 1.56%-11.75%,and the detectable H2S content ranges from 0.0002%to 1.8617%.Theδ^(13)C1,δ^(13)C2,δ^(13)CCO_(2),andδD_(1)values are−39.7‰to−35.6‰,−30.4‰to−23.7‰,−12.4‰to−4.6‰,and−204‰to−185‰,respectively.Identification of the gas origin and source indicates that the gaseous alkanes are commonly coal-derived gas.The gas was generated from the coal measures in the Taiyuan Formation(C_(3t))and subsequently migrated.A small amount of oil-associated gas,mainly from O1m carbonate source rocks,has been incorporated into the gas reservoir.The natural gas has experienced insignificant alteration by thermochemical sulfate reduction,and the relatively high levels of CO_(2)are probably associated with corrosion alteration of carbonate reservoirs by injected fluid during acid fracturing. 展开更多
关键词 geochemical characteristics stable isotopic compositions genetic types thermochemical sulfate reduction gas-source correlation Ordovician Majiagou Formation Daniudi gas field
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An effective method toward large field-of-view gamma-ray computed tomography based on an inverse Compton scattering light source
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作者 Zhi-Jun Chi Hong-Ze Zhang +8 位作者 Jia-Yi Sun Hao Ding Jin Lin Xuan-Qi Zhang Qi-Li Tian Zhi Zhang Ying-Chao Du Wen-Hui Huang Chuan-Xiang Tang 《Nuclear Science and Techniques》 2026年第5期252-263,共12页
The quasi-monochromatic,continuously energy-tunable,and high-brightness gamma rays that are produced by an inverse Compton scattering(ICS)light source provide an ideal probe for gamma-ray imaging.However,owing to the ... The quasi-monochromatic,continuously energy-tunable,and high-brightness gamma rays that are produced by an inverse Compton scattering(ICS)light source provide an ideal probe for gamma-ray imaging.However,owing to the influence of the intrinsic energy-angle correlation spectrum of this type of light source,monochromatic computed tomography(CT),especially in the gamma-ray energy region,can only be realized in a low-efficiency manner,similar to first-generation CT.A dual-energy scan scheme with a large imaging field of view(FOV)was developed in this study to improve the imaging efficiency.The effectiveness of this scheme was demonstrated based on the beam parameters of a typical ICS light source using Monte Carlo simulations.By leveraging the principle of basis material decomposition,the influence of the energyangle correlation spectrum on CT reconstruction was corrected,and a monochromatic CT image of the imaging object was accurately reconstructed.Furthermore,the electron density and effective atomic number of the imaging object could be obtained simultaneously. 展开更多
关键词 Gamma-ray computed tomography Energy-angle correlation Basis material decomposition Inverse Compton scattering light source Monte Carlo simulation
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Coupling dynamics of SDGs in Tajikistan from 2001 to 2023
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作者 Ranna HAZIHAN DU Hongru +2 位作者 HE Chuanchuan Kobiljon Khushvakht KHUSHVAKHTZODA Bobozoda KOMIL 《Regional Sustainability》 2026年第1期54-74,共21页
Since the United Nations launched the Sustainable Development Goals(SDGs)in 2015,global implementation has steadily advanced,yet prominent challenges persist.Progress has been uneven across regions and countries,with ... Since the United Nations launched the Sustainable Development Goals(SDGs)in 2015,global implementation has steadily advanced,yet prominent challenges persist.Progress has been uneven across regions and countries,with Tajikistan representing a typical example of such disparities.Based on 81 SDG indicators for Tajikistan from 2001 to 2023,this study applied a three-level coupling network framework:at the microscale,it identified synergies and trade-offs between indicators;at the mesoscale,it examined the strength and direction of linkages within four SDG-related components(society,finance,governance,and environment);and at the global level,it focused on the overall SDG interlinkages.Spearman’s rank correlation,sliding window method,and topological properties were employed to analyze the coupling dynamics of SDGs.Results showed that over 70.00%of associations in the global SDG network were of medium-to-low intensity,alongside extremely strong ones(|r|value approached 1.00,where r is the correlation coefficient).SDG interactions were generally limited,with stable local synergy clusters in core livelihood sectors.Network modularity fluctuated,reflecting a cycle of differentiation,integration,and fragmentation,while coupling efficiency varied with the external environment.Each component exhibited distinct functional characteristics.The social component maintained high connectivity through the“poverty alleviation-education-healthcare”loop.The environmental component shifted toward coordinated eco-economic governance.The governance-related component broke interdepartmental barriers,while the financial component showed weak links between resource-based indicators and consumption/employment indicators.Tajikistan’s SDG coupling evolved through three phases:survival-oriented(2001–2012),policy integration(2013–2018),and shock adaptation(2019–2023).These phases were driven by policy changes,resource industries,governance optimization,and external factors.This study enriches the analytical framework for understanding the dynamic coupling of SDGs in mountainous resource-dependent countries and provides empirical evidence to support similar countries in formulating phase-specific SDG promotion strategies. 展开更多
关键词 SUSTAINABLE DEVELOPMENT Goals(SDGs) Climate change Coupling network analysis Spearman’s rank correlation Synergic relationships Trade-off relationships TAJIKISTAN
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