نتایج جستجو برای: horizontal to vertical spectral ratio

تعداد نتایج: 10735082  

Journal: :Vision Research 2001
Eli Brenner Jeroen B.J Smeets Michael S Landy

The ratio of the vertical sizes of corresponding features in the two eyes' retinal images depends both on the associated object's distance and on its horizontal direction relative to the head (eccentricity). It is known that manipulations of vertical size ratio can affect perceived distance, size, depth and shape. We examined how observers use the vertical size ratio to determine the viewing di...

Journal: :civil engineering infrastructures journal 0
mohammad ali lotfollahi-yaghin faculty of civil engineering, university of tabriz, tabriz, iran mastoureh gholipour salimi faculty of civil engineering, university of tabriz, tabriz, iran hamid ahmadi faculty of civil engineering, university of tabriz, tabriz, iran

failure of the quay walls due to earthquakes results in severe economic loss. because of hazards threatening such inexpensive nodes of national and international transportation networks, seismic design of quay walls is still an evolving topic in marine structural engineering. this study investigates the sensitivity of the gravity-type quay wall stability respect to uncertain soil and seismic pr...

Journal: :The Journal of chemical physics 2005
David P Shelton

The vertical vertical (VV), horizontal vertical (HV), and vertical horizontal (VH) hyper-Rayleigh scattering (HRS) spectra were measured for liquid CH3NO2 at T= 300 K. The main HRS spectral component has a width upsilon1=1.28 +/- 0.04 cm(-1), which gives an orientation relaxation time pi=4.1 +/- 0.1 ps in good agreement with other experiments. However, the VH spectrum also contains a previously...

2008
Kuo-Liang Wen Che-Min Lin Hsien-Jen Chiang Chun-Hsiang Kuo Yu-Chih Huang Hsin-Chieh Pu

In the Tatun mountain area of northern Taiwan are two strong motion stations approximately 2.5 km apart, TAP056 and TAP066 of the TSMIP network. The accelerometer at station TAP056 is often triggered by earthquakes, but that at TAP066 station is not. Comparisons of vertical and horizontal peak ground accelerations reveal PGA in the vertical, east-west, and north-south components at TAP056 stati...

Laser Doppler Velocimetry (LDV) has been employed to determine pseudo-turbulence characteristics of the flow field around bubble train forming in non-Newtonian caboxymethylcellulose (CMC) aqueous solution at low gas flow rate condition. The Reynolds stress and turbulent intensity of the liquid were investigated by means of Reynolds time-averaged method. The experimental results show that ax...

Failure of the quay walls due to earthquakes results in severe economic loss. Because of hazards threatening such inexpensive nodes of national and international transportation networks, seismic design of quay walls is still an evolving topic in marine structural engineering. This study investigates the sensitivity of the gravity-type quay wall stability respect to uncertain soil and seismic pr...

L Hafezi, M Mohebbi,

Background and aim: Considering the widespread development of implants in dental treatment plans, linear measurements on panoramic radiography are of especial importance. In the present study we investigated the effect of head misalignment up to 15° around vertical and horizontal axes on the magnification rate of digital panoramic radiography in each part of upper and lower jaws. Materia...

ژورنال: مجله دندانپزشکی 2008
باشی زاده فخار, حوریه, شاکری, ناصر, شیرازی, علیرضا, طلایی‌پور, احمدرضا, قاسم‌زاده, علی, نوروزپور, یاسر,

Background and Aim: Image distortion is one of the major problems in panoramic radiography. Horizontal and vertical correction factors could be determined for more efficient clinical applications. The purpose of this study was to determine horizontal and vertical correction factors in panoramic radiography.Materials and Methods: In this test evaluation study in which an asymetric mandibular pha...

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