نتایج جستجو برای: مدل sarima

تعداد نتایج: 120396  

2010
Hye Jin Kam Jin Ok Sung Rae Woong Park

OBJECTIVES To develop and evaluate time series models to predict the daily number of patients visiting the Emergency Department (ED) of a Korean hospital. METHODS Data were collected from the hospital information system database. In order to develop a forecasting model, we used, 2 years of data from January 2007 to December 2008 data for the following 3 consecutive months were processed for v...

2016
Guowei Cai Wenjin Wang Junhai Lu

In order to reduce the effect of numerical weather prediction (NWP) error on short term load forecasting (STLF) and improve the forecasting accuracy, a new hybrid model based on support vector regression (SVR) optimized by an artificial bee colony (ABC) algorithm (ABC-SVR) and seasonal autoregressive integrated moving average (SARIMA) model is proposed. According to the different day types and ...

ژورنال: پژوهش های خاک 2015
امید بهمنی, بهناز ختار

رژیمدماییخاکتأثیرمستقیمیبررشدگیاهان،گوناگونیآن­هاوفعالیت­های زیستی درخاکدارد. به علت کمبود داده­های اندازه­گیری شده دمای خاک، تخمین یابازسازی آنهاازاهمیتبالاییدربررسی­هایزیستاقلیمیوکشاورزی برخوردار است. دمایخاکدرعمق­هایمختلف،دارایرفتارزمانیومکانی متفاوتیمی­باشد. در این تحقیق سعی شد با استفاده از سری­های زمانی دمای خاک در عمق 5 تا30 سانتیمتر در ایستگاه فرودگاه همدان بین سال­های آماری 1996 تا 200...

2011
Nuno Prista Norou Diawara Maria J. Costa Cynthia M. Jones Maria José Costa Cynthia Jones

This Article is brought to you for free and open access by the Ocean, Earth & Atmospheric Sciences at ODU Digital Commons. It has been accepted for inclusion in OEAS Faculty Publications by an authorized administrator of ODU Digital Commons. For more information, please contact [email protected]. Repository Citation Prista, Nuno; Diawara, Norou; Costa, Maria J.; and Jones, Cynthia M., "Use...

2013
Shiyi Cao Feng Wang Wilson Tam Lap Ah Tse Jean Hee Kim Junan Liu Zuxun Lu

BACKGROUND Tuberculosis (TB) is a serious public health issue in developing countries. Early prediction of TB epidemic is very important for its control and intervention. We aimed to develop an appropriate model for predicting TB epidemics and analyze its seasonality in China. METHODS Data of monthly TB incidence cases from January 2005 to December 2011 were obtained from the Ministry of Heal...

2017
Qinqin Xu Runzi Li Yafei Liu Cheng Luo Aiqiang Xu Fuzhong Xue Qing Xu Xiujun Li

This study aimed to predict the incidence of mumps using a seasonal autoregressive integrated moving average (SARIMA) model, and provide theoretical evidence for early warning prevention and control in Zibo City, Shandong Province, China. Monthly mumps data from Zibo City gathered between 2005 and 2013 were used as a training set to construct a SARIMA model, and the monthly mumps in 2014 were d...

2015
Li-Ping Yang Si-Yuan Liang Xian-Jun Wang Xiu-Jun Li Yan-Ling Wu Wei Ma

BACKGROUND Laiwu District is recognized as a hyper-endemic region for scrub typhus in Shandong Province, but the seriousness of this problem has been neglected in public health circles. METHODOLOGY/PRINCIPAL FINDINGS A disability-adjusted life years (DALYs) approach was adopted to measure the burden of scrub typhus in Laiwu, China during the period 2006 to 2012. A multiple seasonal autoregres...

ژورنال: :علوم و مهندسی آبیاری 2013
محبوبه حاجی بیگلو عباسعلی قزل سوفلو حسین علیمیرزائی

محدودیت منابع آبی جهت تأمین آب مورد نیاز کشاورزی و غیرکشاورزی موجب بروز مشکلات عمده­ای شده است و باران به عنوان یکی از مهمترین منابع آبی موجود محسوب می­شود. بنابراین، پیش­بینی بارندگی و برآورد میزان آن در هر ماه و یا سال و برای هر منطقه و حوضه آبریز، به عنوان یکی از مهم­ترین پارامتر­های جوی، از اهمیت ویژه­ای در استفاده بهینه از منابع آبی برخوردار است. برای پیش­بینی باران می­توان از سری­های زمان...

2014
Huifen Feng Guangcai Duan Rongguang Zhang Weidong Zhang

BACKGROUND Large-scale outbreaks of hand-foot-mouth disease (HFMD) have occurred frequently and caused neurological sequelae in mainland China since 2008. Prediction of the activity of HFMD epidemics a few weeks ahead is useful in taking preventive measures for efficient HFMD control. METHODS Samples obtained from children hospitalized with HFMD in Zhengzhou, Henan, China, were examined for t...

Journal: :JIPS 2014
Muhammad Zeeshan Arshad Javeria Muhammad Nawaz Sang Jeen Hong

In this paper, we investigated the use of seasonal autoregressive integrated moving average (SARIMA) time series models for fault detection in semiconductor etch equipment data. The derivative dynamic time warping algorithm was employed for the synchronization of data. The models were generated using a set of data from healthy runs, and the established models were compared with the experimental...

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