Showing 521 - 540 results of 1,176 for search '"time series"', query time: 0.07s Refine Results
  1. 521

    Spurious Regression by D. Ventosa-Santaulària

    Published 2009-01-01
    “…Indeed, spurious regressions have played a fundamental role in the building of modern time series econometrics and have revolutionized many of the procedures used in applied macroeconomics. …”
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    Article
  2. 522

    Critical transitions in a model of a genetic regulatory system by Jesse Berwald, Marian Gidea

    Published 2014-02-01
    “…We apply two methods to numerically test the synthetic time series generated by the system for early indicators of critical transitions: a detrended fluctuation analysis method, and a novel method based on topological data analysis (persistence diagrams).…”
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  3. 523

    OBSERVED AND PROJECTED CLIMATE CHANGE AND ITS IMPACT ON ECOSYSTEMS’ PRODUCTIVITY IN FOREST-STEPPE AND STEPPE ZONES OF RUSSIA AND NEIGHBORING (FSU) COUNTRIES by NICOLAY DRONIN, NATALIA TELNOVA, ANDREY KIRILENKO, ELENA MILANOVA, NATALIA KALUTSKOVA

    Published 2015-12-01
    “…Spatial pattern comparable analysis of some climate variables and NDVI time series proves projections of aridization of the forests-steppe and steppe zones for the whole region with some exclusion for the territories experienced local increase of precipitation or better land management. …”
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    Article
  4. 524

    Genome-resolved year-round dynamics reveal a broad range of giant virus microdiversity by Yue Fang, Lingjie Meng, Jun Xia, Yasuhiro Gotoh, Tetsuya Hayashi, Keizo Nagasaki, Hisashi Endo, Yusuke Okazaki, Hiroyuki Ogata

    Published 2025-01-01
    “…In this study, we investigated the dynamics of giant viruses using time-series metagenomes from eutrophic coastal seawater samples collected over 20 months. …”
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  5. 525

    Long-Term Homogeneity and Trends of Hydroclimatic Variables in Upper Awash River Basin, Ethiopia by Mekonnen H. Daba, Gebiaw T. Ayele, Songcai You

    Published 2020-01-01
    “…Mann-Kendall (Z) and Sen’s slope tests (Q) were applied for the selected homogeneous time series to detect the trend and magnitude of changes in hydroclimatic variables. …”
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    Article
  6. 526

    Temporal backscatter characterisation of ratoon rice crops based on Sentinel-1 intensity data by Vidya Nahdhiyatul Fikriyah, Roshanak Darvishzadeh, Alice Laborte, Jitender Rathore, Andrew Nelson

    Published 2025-12-01
    “…This study demonstrates the potential of SAR Sentinel-1 time series data to determine periods and SAR features for optimal main and ratoon rice discrimination, which offers advantages for future remote sensing-based rice ratooning mapping and rice production estimation.…”
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  7. 527

    Vapor pressure deficit (VPD) downscaling based on multi-source remote sensing, in-situ observation, and machine learning in China by Mi Wang, Zhuowei Hu, Xiangping Liu, Wenxing Hou

    Published 2025-02-01
    “…Using ERA5-Land, TerraClimate, GLDAS time series data, and additional predictors such as vegetation indices, land cover types, terrain, and surface temperature, the study developed a random forest (RF) model to estimate VPD (named RF-VPD). …”
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  8. 528

    A novel regional forecastable multiscalar standardized drought index (RFMSDI) for regional drought monitoring and assessment by Aamina Batool, Veysi Kartal, Zulfiqar Ali, Miklas Scholz, Farman Ali

    Published 2025-03-01
    “…K-CGMD is utilized to model the multimodel time series data. The study application incorporates eight meteorological stations in Türkiye's Elazig province (Baskil, Agin, Elazig, Karakocan, Keban Maden, Palu and Sivrice). …”
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  9. 529

    A Note on the Properties of Generalised Separable Spatial Autoregressive Process by Mahendran Shitan, Shelton Peiris

    Published 2009-01-01
    “…Spatial modelling has its applications in many fields like geology, agriculture, meteorology, geography, and so forth. In time series a class of models known as Generalised Autoregressive (GAR) has been introduced by Peiris (2003) that includes an index parameter δ. …”
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    Article
  10. 530

    Chaotic Oscillation of Satellite due to Aerodynamic Torque by Rashmi Bhardwaj, Mohammad Sajid

    Published 2021-01-01
    “…We studied the behavior of trajectories due to change in parameters with Lyapunov exponents and time series plots. The theory is applied to Resourcesat-1, an artificial satellite of the Earth.…”
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  11. 531

    Sustainable economic growth and exhaustible resources: A model and estimation for the US by Almuth Scholl, Willi Semmler

    Published 2002-01-01
    “…The central part of this paper is the presentation of stylized facts on exhaustible resources and an estimation of a basic model with resource constraints for US time series data. The estimated years left until depletion and the empirical trends of the ratios of capital stock and consumption to resources seem to indicate that there might be a threat to sustainable growth in the future. …”
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  12. 532

    Long-run forecasting of the number of the ecotourism arrivals in the municipality of Stambolovo, Bulgaria by Preslav Dimitrov

    Published 2013-01-01
    “…The present paper regards several major problems in the application of exponential smoothing methods for the purpose of the long-run forecasting for the needs of the mountainous municipality of Stambolovo, Bulgaria, such as: (i) the problem of determining the time series pattern; or the so-called “forecast profile”; (ii) the selection of a suitable forecasting method; (iii) Calculating of short-run and long-run forecasts; and (iv) the comparison of the results of the forecast techniques on the basis of the errors in the forecasts. …”
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  13. 533

    A Note on the Observability of Temporal Boolean Control Network by Wenping Shi, Bo Wu, Jing Han

    Published 2013-01-01
    “…Temporal Boolean network is a generalization of the Boolean network model that takes into account the time series nature of the data and tries to incorporate into the model the possible existence of delayed regulatory interactions among genes. …”
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  14. 534

    THE RELATIONSHIP BETWEEN GOVERNMENT SPENDING AND NIGERIA'S ECONOMIC GROWTH: VECTOR AUTO-REGRESSION APPROACH by Benedict Azu, Agbobu Shedrack Onyeka

    Published 2023-07-01
    “… This study examined the relationship between government spending and Nigeria's economic growth using time series data from 1982 to 2022. Both the pairwise causality test and the Vector Auto-regression (VAR) model were used. …”
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  15. 535

    Visualization of Online-Game Players Based on Their Action Behaviors by Ruck Thawonmas, Keita Iizuka

    Published 2008-01-01
    “…In order to reduce the dimension of matrices used in computation of the CMDS input, we exploit a time-series reduction technique recently proposed by us. …”
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  16. 536

    On the Estimation of k-Regimes Switching of Mixture Autoregressive Model via Weibull Distributional Random Noise by Rasaki, Olawale Olanrewaju, Anthony, Gichuhi Waititu, Nafiu, Lukman Abiodun

    Published 2021
    “…This paper describes regime-switching, full range of shape changing distributions (multimodalities), and cycles traits that were characterized by time-varying series via Weibull distributional noise for time series with fluctuations and long-memory. We developed and established a Weibull Mixture Autoregressive model of k-regimes via WMAR(k; p1, p2, , pk ) with Expectation-Maximization (EM) algorithm adopted as parameter estimation technique. …”
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    Article
  17. 537

    Fréchet Random Noise for k-Regime-Switching Mixture Autoregressive Model by Rasaki, Olawale Olanrewaju, Anthony, Gichuhi Waititu, Nafiu, Lukman Abiodun

    Published 2021
    “…This paper describes Fréchet distribution as a random noise for capturing multimodalities, regime-switching and change-points attributed to uniformly time-varying series via causality of fluctuations, extreme values and heavy-tailed time series. Fréchet Mixture Autoregressive (FMAR) model of k-regime-switching, denoted by FMAR(k; p1, p2 ,, pk ) was developed and Expectation-Maximization (EM) algorithm was used as a method of parameter estimation for the embedded coefficients of AR of k-mixing weights and lag pk. …”
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  18. 538

    Stock price prediction with attentive temporal convolution-based generative adversarial network by Ying Liu, Xiaohua Huang, Liwei Xiong, Ruyu Chang, Wenjing Wang, Long Chen

    Published 2025-03-01
    “…A TCN can achieve extensive sequence memory by utilizing dilated convolutions, enabling it to capture long-term dependencies in time-series data, as well as causal convolution, ensuring that the model does not utilize future information when predicting future values, which is particularly crucial for time-series prediction. …”
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    Article
  19. 539

    Impacts of National Reimbursement Drug Price Negotiation on drug accessibility, utilization, and cost in China: a systematic review by Zheng Zhu, Jiawei Zhang, Zhihu Xu, Quan Wang, Yu Qi, Li Yang

    Published 2025-02-01
    “…The study design had to be a randomized or non-randomized trial, an interrupted time series (ITS) analysis, a repeated measures study, or a controlled before‐after (CBA) study. …”
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  20. 540

    Using Sequence Mining to Predict Complex Systems: A Case Study in Influenza Epidemics by Theyazn H. H. Aldhyani, Manish R. Joshi, Shahab A. AlMaaytah, Ahmed Abdullah Alqarni, Nizar Alsharif

    Published 2021-01-01
    “…The INTS model combines clustering with a time series model to enhance the prediction of influenza outbreaks. …”
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    Article