منابع مشابه
Cyberterrorism: The Sum of All Fears?
Cyberterrorism conjures up images of vicious terrorists unleashing catastrophic attacks against computer networks, wreaking havoc, and paralyzing nations. This is a frightening scenario, but how likely is it to occur? Could terrorists cripple critical military, financial, and service computer systems? This article charts the rise of cyberangst and examines the evidence cited by those who predic...
متن کاملOn the Edge-Difference and Edge-Sum Chromatic Sum of the Simple Graphs
For a coloring $c$ of a graph $G$, the edge-difference coloring sum and edge-sum coloring sum with respect to the coloring $c$ are respectively $sum_c D(G)=sum |c(a)-c(b)|$ and $sum_s S(G)=sum (c(a)+c(b))$, where the summations are taken over all edges $abin E(G)$. The edge-difference chromatic sum, denoted by $sum D(G)$, and the edge-sum chromatic sum, denoted by $sum S(G)$, a...
متن کاملThe unit sum number of discrete modules
In this paper, we show that every element of a discrete module is a sum of two units if and only if its endomorphism ring has no factor ring isomorphic to $Z_{2}$. We also characterize unit sum number equal to two for the endomorphism ring of quasi-discrete modules with finite exchange property.
متن کاملThe Sum Graph of Non-essential Submodules
Throughout this paper, R will denote a commutative ring with identity and M is a unitary R- module and Z will denote the ring of integers. We introduce the graph Ω(M) of module M with the set of vertices contain all nontrivial non-essential submodules of M. We investigate the interplay between graph-theoretic properties of Ω(M) and algebraic properties of M. Also, we assign the values of natura...
متن کاملMy interest in the department of medical education
My interest in the department of medical education started in the year 1955 when about 900 high school graduates in Shiraz, participated in the “Konkoor”, an Iranian University entrance exam. Of these 900 graduates, 42 passed and gained admissions into Shiraz University Medical School and six years later, 32 graduated and received a medical degree from Shiraz University Medical School. I was on...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: BMJ
سال: 2005
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.331.7521.883