Seasonal and sunspot-cycle changes in the day-to-day variability ofSq

stability and attraction domains of traffic equilibria in day-to-day dynamical system formulation

در این پژوهش مسئله واگذاری ترافیک را از دید سیستم های دینامیکی فرمول بندی می کنیم.فرض کرده ایم که همه فاکتورهای وابسته در طول زمان ثابت باشند و تعادل کاربر را از طریق فرایند منظم روزبه روز پیگیری کنیم.دینامیک ترافیک توسط یک نگاشت بازگشتی نشان داده می شود که تکامل سیستم در طول زمان را نشان می دهد.پایداری تعادل و دامنه جذب را توسط مطالعه ویژگی های توپولوژیکی تکامل سیستم تجزیه و تحلیل می کنیم.پاید...

Day-to-day variability of adequacy indexes in peritoneal dialysis.

BACKGROUND The achievement of dialysis adequacy targets in peritoneal dialysis (PD) is assessed by the calculation of the Kt/V and creatinine clearance (C(Cr)) obtained by collecting dialysate and urine, usually two or three times a year. Prescription decisions are based on such adequacy assessments, regardless of any variability in the single measurements. The aim of our study was to assess th...

Day-to-day blood pressure variability and dementia

Day-to-day mood changes after childbirth: further data.

The depression and lability of mood which have been previously reported on the fifth day after childbirth are largely restricted to women with high neuroticism scores. The pattern of day-to-day mood changes is the same after Caesarian section as after vaginal delivery, but there is no 'day five' phenomenon after hysterectomy. Post-partum mood disturbance is less prominent in women who return ho...

Radio Variability of Sagittarius A * - A 106 Day Cycle

We report the presence of a 106-day cycle in the radio variability of Sgr A* based on an analysis of data observed with the Very Large Array (VLA) over the past 20 years. The pulsed signal is most clearly seen at 1.3 cm with a ratio of cycle frequency to frequency width f /∆f = 2.2 ± 0.3. The periodic signal is also clearly observed at 2 cm. At 3.6 cm the detection of a periodic signal is margi...