نتایج جستجو برای: variation trend
تعداد نتایج: 411878 فیلتر نتایج به سال:
background: determining the mortality rate of diseases in a community is one of the main components in health care planning of that community. this study used a join point regression model to determine the trend of mortality due to diabetes mellitus (dm) in iran. materials and methods: the data on the rate of mortality due to dm were obtained from the reports of the iranian ministry of health. ...
Based on 270 specimens from 7 populations of Lacerta alpina, L. caucasica, L. daghestanica and L. praticola, morphological relationships between the four species were studied for 7 meristic characters and 5 morphometric characters, using canonical variate analysis. In both scalation and morphometry, the contours and centroids of the studied populations form a trend: L. praticola – L. caucasica ...
A possible existence of a regular temporal trend superimposed over the durational pattern of individual segments is explored in read continuous speech in the western Slavonic language of Czech. A short text read by 75 speakers was used to ascertain whether the contextually conditioned temporal variation would allow any phrasal tendencies to manifest. The data were normalized against the speaker...
In this study, the changes in the Khorramabad storm in the period of 1952 to 2015 have been investigated. For this purpose, data from meteorological codes 06 and 07 were received from the Meteorological Organization of the country, and after identifying the days of winding with dust storms and calculating their monthly frequency, monthly, seasonal and annual time series were analyzed. In this s...
Abstract: Groundwater shortage has become a very serious problem in Sanjiang Plain. More and more so-called “funnels” and “hanging pumps” situations occurred due to water shortages. The overall trend of groundwater level has decreased continually over the years. In this study, the Chuang Ye Farm in Jian San Jiang Department was taken as an example to develop a non-stable time series random mode...
Time-series Autoregressive Moving Average (ARMA) models were employed to model tree crown profiles for two California hardwood species (blue oak and interior live oak). There are three major components of these models: a polynomial trend, an ARMA model, and unaccounted for variation. The polynomial trend was used to achieve a stationary series. For these crown profiles, the use of a quadratic t...
[1] Measurements of ice elevation from the Geoscience Laser Altimeter System (GLAS) aboard the Ice, Cloud, and Land Elevation Satellite can be combined with time-variable geoid measurements from the Gravity Recovery and Climate Experiment (GRACE) satellite mission to learn about ongoing changes in polar ice mass and viscoelastic rebound of the lithosphere under the ice sheet. We estimate the ac...
Effect of different fillers on natural rubber compounds was investigated through curing, mechanical properties and morphology studies for improving mechanical performance of rubber articles. In this work, natural rubber blends with Silica as Single-filler compounds, and blends with Silica and Carbon black as Bi-filler compounds were considered. Then, natural rubber blends with Silica, Carbon bl...
Background: Determining the mortality rate of diseases in a community is one of the main components in health care planning of that community. This study used a join point regression model to determine the trend of mortality due to diabetes mellitus (DM) in Iran. Materials and Methods: The data on the rate of mortality due to DM were obtained from the reports of the Iranian Ministry of Healt...
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