We use galaxy-galaxy lensing to study the dark matter halos surrounding a sample of Locally Brightest Galaxies (LBGs) selected from the Sloan Digital Sky Survey. We measure mean halo mass as a function of the stellar mass and colour of the central galaxy. Mock catalogues constructed from semi-analytic galaxy formation simulations demonstrate that most LBGs are the central objects of their halos...

This appendix analyzes the special case where the ball’s initial velocity v0 and angular velocity ω0, all in the supporting plane under Assumptions (A1) and (A2), are orthogonal to each other. Under Proposition 1, the ball will move along a straight trajectory. It is more convenient to use two orthogonal directions î and ĵ such that î × ĵ = ẑ. The direction î is of v0 if v0 6= 0 and otherwise i...

In a harmonically mode-locked laser multiple optical pulses propagate inside the laser cavity. The noise in different pulses inside the laser cavity is in general correlated. Information regarding the sign and magnitude of the noise correlations is contained in the distribution of the spectral weight among the supermode noise peaks that appear in the pulse energy and timing noise spectral densi...

As logic density increases, more and more functionality is moving into hardware. Several years ago, it was uncommon to nd more than minimal support in a processor for integer multiplication and division. Now, several processors have multipliers included within the central processing unit on one integrated circuit [8, 12]. Integer division, due to its iterative nature, bene ts much less when imp...

We have investigated the nonlinear optical properties, optical limiting thresholds, and figures of merits for five different phthalocyanine thin films, achieved through doping in PMMA polymer, using the Z-scan technique at 800 nm with 2 ps laser pulse excitation. From the open-aperture Z-scan data we derived that these molecules exhibit strong two photon absorption (2PA) with the nonlinear abso...

ریم بن یعقوب   استادیار دانشگاه کارتاژ، تونس   [email protected]     تاریخ دریافت: 26/10/1390 تاریخ پذیرش: 23/11/1390     مقاله حاضر بر آن است تا به بررسی استفاده تمثیل به عنوان نوعی از کاربردهای زبان­شناختی بپردازد. در این ساحت از کاربرد زبان­شناختی، تمثیل از توصیف واقعیت­های مرتبط با زندگی روزمره و بازنمود­های اجتماعی ـ که از آنها برگرفته شده­اند ـ استفاده می­کند.   این مقاله در چهارچوب م...