AURA is an AI-motivated system with a healthy intersection with the sciences: its short-term goal is to enable domain experts to construct declarative knowledge bases (KBs) from 50 pages of a science textbook for Physics, Chemistry, and Biology in a way that another user can pose questions similar to those in an Advanced Placement (AP) exam and get answers and explanations. In building AURA, an...

In investigating the origins of life and molecular evolution, it is very important to study structure and functions that are common to distantly related species and to analyze the corresponding gene sequences, which are called “molecular fossils.” We therefore developed a computational method [1] based on principal component analysis (PCA) and multidimensional scaling analysis (MDS), and in the...

the issues that arise in this articles are the causes and the bases of social - and sexual - devience according to a sociological point of view. then a search through a number of 350 files of sexual - crimes in babol, declares the causes on a sociological point of view, cultural transmission & contrast theory. in assessment during this research regarding age, sex & occupation as the main criter...

Algebraic cryptanalysis usually requires to recover the secret key by solving polynomial equations. Gröbner bases algorithm is a well-known method to solve this problem. However, a serious drawback exists in the Gröbner bases based algebraic attacks, namely, any information won’t be got if we couldn’t work out the Gröbner bases of the polynomial equations system. In this paper, firstly, a gener...

In this paper we develop a natural generalization of Schauder basis theory, we term operator-valued basis or simply ov-basis theory, using operator-algebraic methods. We prove several results for ov-basis concerning duality, orthogonality, biorthogonality and minimality. We prove that the operators of a dual ov-basis are continuous. We also dene the concepts of Bessel, Hilbert ov-basis and obta...

Let $\mathbb {N}=\{0,1,2,\ldots \}$ and $A\subset \mathbb {N}$. $h\geq 2$ let $r_h(A,n)=\sharp \{ (a_1,\ldots ,a_h) \in A^{h}: a_1+\cdots +a_h=n\}.$ The set $A$ is called an asymptotic basis of order $h$ if $r_h(A,n)\geq 1$ for all sufficiently la

the mines are an important section of national heritage and public domain. in legal aspect there are several theories about the mines such as; ownership; public domain and non-proper tier things. some of the islamic jurists believe mines are anfal and others say they are non-proper tier things. although the prohibition or restriction in exploitation of mine is useful because of fairly distribut...