نتایج جستجو برای: time interval of winter shamalkain
تعداد نتایج: 21278979 فیلتر نتایج به سال:
This paper describes a dynamic capacitated arc routing problem motivated from winter gritting applications. In this problem, the service cost on each arc is a piecewise linear function of the time of beginning of service. This function also exhibits an optimal time interval where the service cost is minimal. Since the timing of an intervention is crucial, the dynamic aspect considered in this w...
One of the most important operations in managed gardens is pruned grapes. For evaluate the effect of pruning short, medium, heavy on yield and yield components of Taif grapes, before and after the cold winter, in the years 2012 to 2013, A factorial experiment in a CRBD design with five replicates were performed on two factors. The first factor was the number of buds per stem and included the th...
In this paper we consider the problem of finding a core of weighted interval trees. A core of an interval graph is a path contains some intervals of graph so that the sum of distances from all intervals to this path is minimized. We show that intervals on core of a tree should be maximal, then a linear time algorithm is presented to find the core of interval trees
Background: Identifying the sources of variation in QTc measurements is important for preventing arrhythmias during and after hemodialysis. The present study was designed to determine the correlation between the type of hemodialysis buffer and the changes in QTc interval in patients on chronic hemodialysis. Methods: Fifty-nine patients on chronic hemodialysis who referred in winter 2007 to hemo...
In recent years cardiac interbeat interval time series have been investigated by DFA and MF-DFA methods. In this paper instead of investigating cardiac interbeat interval time series, ECG signals are considered, it is shown that the normal and abnormal heart signals have different scaling relations.
daily precipitation data from aphrodite's water resources with a spatial resolution of 0.25ëfor 57 years has been used to detect the trend of precipitation in azerbaijan republic. first of all monthly, seasonal and yearly maps and regional mean time series calculated. according to the annual map mean annual precipitation of the country is about 410 m.m there are two precipitation maximal ...
[1] We perform the first analysis of stratosphere-troposphere exchange in terms of distributions that partition the one-way flux across the thermal tropopause according to stratospheric residence time t and the regions where air enters and exits the stratosphere. These distributions robustly quantify one-way flux without being rendered ill defined by the short-t eddy-diffusive singularity. Diag...
Seasonal variation in cutaneous melanoma incidence with a summer peak is poorly understood. It has been hypothesized to be due to increased diagnosis in summer or a late-promoting effect of sun exposure. We analyzed the characteristics of incident cases of cutaneous melanoma and their outcome by season of diagnosis in the population of New South Wales, Australia. Cases of melanoma (25,845 cases...
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