Sex workers contend that the emergence of sex business may be traced back to pursuit commercial profits. Several economic issues, including inequality, according workers, are at basis sexual activity. The industry and demand irreplaceable, which indicates will remain in existence indefinitely.

The terminology needs a brief explanation. A set S ⊂ R2 is said to contain its circle centers if, for any three non-collinear points from S , the center of the circle through those points is always in S ; in other words, if S contains the vertices of any triangle, then it also contains the triangle’s circumcenter. Several solutions were quickly submitted, and two (outlined in Exercises 1 and 2 ...

For any non-trivial abelian group A under addition a graph $G$ is said to be $A$-textit{magic}  if there exists a labeling $f:E(G) rightarrow A-{0}$ such that, the vertex labeling $f^+$  defined as $f^+(v) = sum f(uv)$ taken over all edges $uv$ incident at $v$ is a constant. An $A$-textit{magic} graph $G$ is said to be $Z_k$-magic graph if the group $A$ is $Z_k$  the group of integers modulo $k...

Many businesses use their Websites primarily as an alternative marketing strategy. How a business’s image, via a Website, is presented to potential customers is therefore important. There are many factors that will influence the effectiveness of a Website, two critical factors are how easily users are able to navigate and how easy the site is to use. The research reported here examined these tw...