31 research outputs found
Analysis and Forecast of Railway Freight Volume based on Prophet-Deep AR Model
The research on railway freight volume forecast is of great significance to the allocation of railway freight transport resources, the formulation of transport plans and the organization of railway freight transport. This study, by fully mining the railway freight ticket data information, put forward the precise forecast model of railway freight volume under different types of freight. Firstly, the railway freight ticket data are cleaned, regulated and integrated, and the time series of the daily number of railway freight trains are constructed, get the trend, periodicity and holiday data of railway traffic data, and set the parameters of Chinese holidays and rest days according to the demand characteristics of different categories. Secondly, the forecasting result of the Prophet is taken as a cooperative parameter. DeepAR is used to forecast, and a combined model of the Prophet-DeepAR is constructed. Finally, the combined model was validated with Shanghai Railway Bureau data from January 1, 2015 to December 31, 2018 for the food and tobacco category, and with Prophet-DeepAR, LSTM, Wavelet, BILSTM, and Prophet-LSTM, prophet-wavelet and Prophet-Bilstm are used to compare the prediction results. The results show that the Prophet-DeepAR model can extract the multi-dimensional periodicity of freight traffic and mine the trend information of freight traffic, and get the prediction result with high precision. It has better accuracy than other models
Temporal Knowledge Question Answering via Abstract Reasoning Induction
In this paper, we tackle the significant challenge of temporal knowledge
reasoning in Large Language Models (LLMs), an area where such models frequently
encounter difficulties. These difficulties often result in the generation of
misleading or incorrect information, primarily due to their limited capacity to
process evolving factual knowledge and complex temporal logic. In response, we
propose a novel, constructivism-based approach that advocates for a paradigm
shift in LLM learning towards an active, ongoing process of knowledge synthesis
and customization. At the heart of our proposal is the Abstract Reasoning
Induction ARI framework, which divides temporal reasoning into two distinct
phases: Knowledge-agnostic and Knowledge-based. This division aims to reduce
instances of hallucinations and improve LLMs' capacity for integrating abstract
methodologies derived from historical data. Our approach achieves remarkable
improvements, with relative gains of 29.7\% and 9.27\% on two temporal QA
datasets, underscoring its efficacy in advancing temporal reasoning in LLMs.
The code will be released at https://github.com/czy1999/ARI.Comment: 17 pages, 10 figure
The Indeterminate Domain Protein ROC1 Regulates Chilling Tolerance via Activation of DREB1B/CBF1 in Rice
Abiotic stress, including salinity, drought and cold, severely affect diverse aspects of plant development and production. Rice is an important crop that does not acclimate to cold; therefore, it is relatively sensitive to low temperature stress. Dehydration-responsive element-binding protein 1s (DREB1s)/C-repeat binding factors (CBFs) are well known for their function in cold tolerance, but the transcriptional regulation of CBFs remains elusive, especially in rice. Here, we performed a yeast one-hybrid assay using the promoter of CBF1, a cold-induced gene, to isolate transcriptional regulators of CBF1. Among the seven candidates identified, an indeterminate domain (IDD) protein named ROC1 (a regulator of CBF1) was further analyzed. The ROC1 transcript was induced by exogenously-treated auxin, while it was not altered by cold or ABA stimuli. ROC1-GFP was localized at the nucleus, and ROC1 showed trans-activation activity in yeast. The electrophoretic mobility shift assay (EMSA) and ChIP analyses revealed that ROC1 directly bound to the promoter of CBF1. Furthermore, ROC1 mutants exhibited chilling-sensitive symptoms and inhibited cold-mediated induction of CBF1 and CBF3, indicating that ROC1 is a positive regulator of cold stress responses. Taken together, this study identified the CBF1 regulator, and the results are important for rice plant adaptation to chilling stress
DiffusionâOptimized Long Lifespan 4.6Â V LiCoO2: Homogenizing Cycled BulkâToâSurface Li Concentration with Reduced Structure Stress
Abstract Increasing the charging cutâoff voltage (e.g., 4.6 V) to extract more Li ions are pushing the LiCoO2 (LCO) cathode to achieve a higher energy density. However, an inhomogeneous cycled bulkâtoâsurface Li distribution, which is closely associated with the enhanced extracted Li ions, is usually ignored, and severely restricts the design of long lifespan high voltage LCO. Here, a strategy by constructing an artificial solidâsolid Li diffusion environment on LCO's surface is proposed to achieve a homogeneous bulkâtoâsurface Li distribution upon cycling. The diffusion optimized LCO not only shows a highly reversible capacity of 212 mA h gâ1 but also an ultrahigh capacity retention of 80% over 600 cycles at 4.6 V. Combined in situ Xâray diffraction measurements and stressâevolution simulation analysis, it is revealed that the superior 4.6 V longâcycled stability is ascribed to a reduced structure stress leaded by the homogeneous bulkâtoâsurface Li diffusion. This work broadens approaches for the design of highly stable layered oxide cathodes with low ionâstorage structure stress
Does seizure propagate within or across intrinsic brain networks? An intracranial EEG study
Background: Understanding the spatiotemporal propagation profiles of seizures is crucial for the preoperative assessment of epilepsy patients. The present study aimed to investigate whether seizures exhibit propagation patterns that align with intrinsic networks (INs). Methods: A quantitative analysis was conducted to examine ictal fast activity (IFA). The Epileptogenicity Index (EI) was employed to assess the epileptogenicity, spectral features, and temporal characteristics of IFA. Intra-network and inter-network comparisons were made regarding the IFA-related metrics. Additionally, the metrics were correlated with Euclidean distance. Network connection maps were generated to visualize seizures originating from different INs, allowing for comparisons between distinct groups. Results: Data for 81 seizures in 43 subjects were captured using stereoelectroencephalography implantation. Three metrics were compared: EI, time involvement (TI), and energy ratio index (ERI). Intra-network channels exhibited higher EI, earlier involvement of IFA, and stronger high-frequency energy. These findings were further validated through subgroup analyses stratified by neuropathology, seizure type, and seizure origination lobe. Correlation analyses revealed a negative association between distance and both EI and ERI, while distance exhibited a positive correlation with TI. Seizures originating from different INs exhibited varying propagation characteristics. Conclusions: The study findings highlight the dominant role of intra-network dynamics over inter-network during seizure propagation. These results contribute to our understanding of seizure dynamics and their relationship with INs
Multiorgan failure caused by Chinese herbal medicine Xanthii Fructus poisoning: a case report
Abstract Background Xanthii Fructus was used in the treatment of rhinitis and related nasal disease. It is the most commonly used chemically active component in compounds formulated for the treatment of rhinitis. However, poisoning, resulting in serious consequences, can easily occur owing to cocklebur overdose, improper processing, or usage without processing. Case presentation We reported on a 55-year-old man who experienced allergic rhinitis for 2.5Â years. He ingested unprocessed Xanthii Fructus for 2Â months as treatment. However, he developed anorexia; nausea; abdominal pain; general weakness; hiccups; oliguria and anuria; significantly elevated serum alanine aminotransferase, aspartate aminotransferase, and creatinine levels; and abnormalities in blood coagulation series. Nutritional support; daily drugs for liver protection, gastric protection, inflammation reduction; fresh plasma; and cryoprecipitate infusion were administered. Continuous venovenous hemodialysis (Prismaflex ST100) was also administered. However, the patientâs multiple organ failure gradually worsened, ultimately leading to death. Conclusion Xanthii Fructus poisoning affects multiple systems, and its clinical manifestations are complex. Therefore, it is easily misdiagnosed and missed. Along with careful inquiry of medical and medication history, early diagnosis and intervention are vital for a successful treatment. It is also important to educate people and create awareness about this poisoning. Therefore, this intractable case has great clinical significance
Altered Metabolic Networks in Mesial Temporal Lobe Epilepsy with Focal to Bilateral Seizures
This study was designed to identify whether the metabolic network changes in mesial temporal lobe epilepsy (MTLE) patients with focal to bilateral tonic-clonic seizures (FBTCS) differ from changes in patients without FBTCS. This retrospective analysis enrolled 30 healthy controls and 54 total MTLE patients, of whom 27 had FBTCS. Fluorodeoxyglucose positron emission tomography (FDG-PET) data and graph theoretical analyses were used to examine metabolic connectivity. The differences in metabolic networks between the three groups were compared. Significant changes in both local and global network topology were evident in FBTCS+ patients as compared to healthy controls, with a lower assortative coefficient and altered betweenness centrality in 15 brain regions. While global network measures did not differ significantly when comparing FBTCSâ patients to healthy controls, alterations in betweenness centrality were evident in 13 brain regions. Significantly altered betweenness centrality was also observed in four brain regions when comparing patients with and without FBTCS. The study revealed greater metabolic network abnormalities in MTLE patients with FBTCS as compared to FBTCSâ patients, indicating the existence of distinct epileptogenic networks. These findings can provide insight into the pathophysiological basis of FBTCS
Multiple paleolakes caused by glacier river-blocking on the southeastern Tibetan plateau in response to climate changes since the last glacial maximum
The detailed evolution of valley-damming by glaciers on the southeastern Tibetan Plateau, including the large Gega paleolake, is reconstructed based on observed sediment sequences, and optically stimulated luminescence (OSL) dating. In total, six main lithofacies associations are inferred that represent three relevant sedimentary environments associated with the paleolakes, i.e. lacustrine, deltaic and fluvial. Since the local last glacial maximum (LGM), there have been at least three river-blocking episodes and consequent phases of lacustrine development in the Gega and Jiedexiu dammed lakes. They occurred at ca. 25â17 ka, 14â11 ka, and âŒ4 ka. Sedimentological evidence shows that the glacier-dammed lakes were not stable; they experienced oscillations of lake level through short-time drainage events. The damming events and subsequent outburst floods were likely triggered by changes in the extent and thickness of glaciers, caused by rapid climatic changes. This seems to be consistent with proglacial lakes occurring elsewhere, although the dynamics of glacier-dammed lakes can be highly variable between catchments and through time due to the influence of climate-dependent factors on the proglacial lakes