Asteroidal I, J, K magnitudes recovered in the DENIS survey: Second release

On the matrix equations U_iXV_j W_{i j} for 1 \leq i; j \leq k with i +j \leq k

In between k -Sets, j -Facets, and i -Faces: (i , j) - Partitions

Let S be a finite set of points in general position in Rd. We call a pair (A,B) of subsets of S an (i, j)-partition of S, if |A| = i, |B| = j and there is an oriented hyperplane h with S∩h = A and with B the set of points from S on the positive side of h. (i, j)-Partitions generalize the notions of k-sets (these are (0, k)-partitions) and j-facets ((d, j)-partitions) of point sets as well as th...

Second Data Release of the 6dF Galaxy Survey

The 6dF Galaxy Survey is measuring around 150 000 redshifts and 15 000 peculiar velocities from galaxies over the southern sky at | b | > 10◦. When complete, it will be the largest survey of its kind by more than an order of magnitude. Here we describe the characteristics of the Second Incremental Data Release (DR2) and provide an update of the survey. This follows earlier data made public in D...

the survey of the virtual higher education in iran and the ways of its development and improvement

این پژوهش با هدف "بررسی وضعیت موجود آموزش عالی مجازی در ایران و راههای توسعه و ارتقای آن " و با روش توصیفی-تحلیلی و پیمایشی صورت پذیرفته است. بررسی اسنادو مدارک موجود در زمینه آموزش مجازی نشان داد تعداد دانشجویان و مقاطع تحصیلی و رشته محل های دوره های الکترونیکی چندان مطلوب نبوده و از نظر کیفی نیز وضعیت شاخص خدمات آموزشی اساتید و وضعیت شبکه اینترنت در محیط آموزش مجازی نامطلوب است.

THE CONCEPT OF (I; J)-COHEN MACAULAY MODULES

‎We introduce a generalization of the notion of‎ depth of an ideal on a module by applying the concept of‎ local cohomology modules with respect to a pair‎ ‎of ideals‎. ‎We also introduce the concept of $(I,J)$-Cohen--Macaulay modules as a generalization of concept of Cohen--Macaulay modules‎. ‎These kind of modules are different from Cohen--Macaulay modules‎, as an example shows‎. ‎Also an art...