Previous analyses have shown that the most recent common ancestor for a randomly mating population of size n would have lived approximately log 2 n generations ago; for example, a panmictic population of one million people would have a common ancestor about 20 generations in the past. Structured populations consisting of panmictic subpopulations connected by migration at frequencies as low as o...

Privacy protection on user context is one of the most important issues in ubiquitous and pervasive computing. This paper describes a new privacy protection approach that not only filters and reduces the granularity of context information to correct access level granularity, but also intelligently replace the filtered-out context information with the artificial context information considered app...

We study a class of problems called Modular Inverse Hidden Number Problems (MIHNPs). The basic problem in this class is the following: Given many pairs 〈 xi, msbk ( (α+ xi) −1 mod p )〉 for random xi ∈ Zp the problem is to find α ∈ Zp (here msbk(x) refers to the k most significant bits of x). We describe an algorithm for this problem when k > (log2 p)/3 and conjecture that the problem is hard wh...

Molecular Inflammation Research Center for Aging Intervention (MRCA), College of Pharmacy, Pusan National University, Busan 609-735, Republic of Korea Graduate School of Science and Engineering for Research, University of Toyama, Toyama 930-8555, Japan Faculty of Pharmaceutical Sciences, Nagasaki University, Nagasaki 852-8131, Japan Department of Physiology, The University of Texas Health Scien...

This paper is an expanded version of a paper presented at the EDEN conference, Vienna, June 2006. It expands the model of learner engagement in the e-portfolio process and defines types of engagement experienced by the user. The factors which impact on the type of engagement enjoyed by the user are numerous and the paper will argue that feedback provision and relevance are the two most importan...

in ancient times, nomad tribes of the north caucasus, passing through caucasian natural gates, most importantly among them, darial and derbent, plundered wealthy southern regions. during of reign of khosrow anushirvan, the sasanian king built strong fortresses along these passages, and caucasian nomadic tribes of the north caucasus could no longer pass through these two passages to invade south...

the socioeconomic (se) status is considered tobe one of the most important health risk factorsnowadays. a simple search showed that onlyin 2011, more than 1100 articles were cited inpubmed about the relationship of health and sestatus. however, there are many inquiries aboutthis association. the se status is a complex andmultidimensional issue, and there is no goldstandard method to measure it,...

downs syndrome (ds), or trisomy 21, is the most common genetic cause of cognitive impairment and congenital heart defects in the human population. to date, the contribution of micrornas (mirnas) in ds has not been investigated. bioinformatic analyses demonstrate that human chromosome 21 (hsa21) harbors five mirna genes mir-99a, let-7c, mir-125b-2, mir-155 and mir-802. mirna expression profiling...

Despite many users get timely information through various social media platforms, news websites remain important mainstream media for high-quality news articles and comprehensive news coverage. Moreover, news websites are becoming well connected with the social media platform by enabling one-click sharing, allowing readers to comment on the articles, and pushing news update to social media thro...