Ascending waves
نویسندگان
چکیده
A sequence of integers x, 1. Let g(n) be the largest integer k such that any set A c { 1,2, . . . . n} of cardinality IA( an/2 contains an ascending wave of length k. We show that there are two positive constants cj and c4 such that c,(log n)2/log log n < g(n) < c,(log n)2 for all n 2 1.
منابع مشابه
Pulsatile Flow and Pressure in Human Systemic Arteries
This study seeks to explain mechanisms responsible for the contour of pressure and flow waves and the pattern of vascular impedance in human systemic arteries. Pulsatile pressure and flow were recorded from the ascending aorta of seven patients undergoing open heart surgery and from the ascending aorta and other arteries of 17 patients at diagnostic catheterization. Ascending aortic pressure/fl...
متن کاملPulsatile Flow and Pressure in Human Systemic Arteries
This study seeks to explain mechanisms responsible for the contour of pressure and flow waves and the pattern of vascular impedance in human systemic arteries. Pulsatile pressure and flow were recorded from the ascending aorta of seven patients undergoing open heart surgery and from the ascending aorta and other arteries of 17 patients at diagnostic catheterization. Ascending aortic pressure/fl...
متن کاملPulsatile Flow and Pressure in Human Systemic Arteries
This study seeks to explain mechanisms responsible for the contour of pressure and flow waves and the pattern of vascular impedance in human systemic arteries. Pulsatile pressure and flow were recorded from the ascending aorta of seven patients undergoing open heart surgery and from the ascending aorta and other arteries of 17 patients at diagnostic catheterization. Ascending aortic pressure/fl...
متن کاملPulsatile flow and pressure in human systemic arteries. Studies in man and in a multibranched model of the human systemic arterial tree.
This study seeks to explain mechanisms responsible for the contour of pressure and flow waves and the pattern of vascular impedance in human systemic arteries. Pulsatile pressure and flow were recorded from the ascending aorta of seven patients undergoing open heart surgery and from the ascending aorta and other arteries of 17 patients at diagnostic catheterization. Ascending aortic pressure/fl...
متن کاملWave intensity in the ascending aorta: effects of arterial occlusion.
We examine the effects of arterial occlusion on the pressure, velocity and the reflected waves in the ascending aorta using wave intensity analysis. In 11 anaesthetised, open-chested dogs, snares were used to produce total arterial occlusion at 4 sites: the upper descending aorta at the level of the aortic valve (thoracic); the lower thoracic aorta at the level of the diaphragm (diaphragm); the...
متن کاملThe atmospheric background situation in northern Scandinavia during January/February 2003 in the context of the MaCWAVE campaign
The atmosphere background wind field controls the propagation of gravity waves from the troposphere through the stratosphere into the mesosphere. During January 2003 the MaCWAVE campaign took place at Esrange, with the purpose of observing vertically ascending waves induced by orography. Temperature data from the U. Bonn lidar at Esrange (68 N/21 E) and the ALOMAR RMR lidar (69 N/16 E), wind da...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- J. Comb. Theory, Ser. A
دوره 52 شماره
صفحات -
تاریخ انتشار 1989