We summarize the observed properties of the CHVC population, which provide strong evidence for source distances in the range 200– 1000 kpc. At these distances, the population corresponds to strongly dark-matter dominated sub-dwarf galaxies still accreting onto the more massive Local Group systems. Recent searches for faint associated stellar populations have revealed red-giant candidates for wh...

One of the security issues in data outsourcing is the enforcement of the data owner’s access control policies. This includes some challenges. The first challenge is preserving confidentiality of data and policies. One of the existing solutions is encrypting data before outsourcing which brings new challenges; namely, the number of keys required to access authorized resources, efficient policy u...

We report an optical photometric survey of 0.89 deg of the Orion OB1b association centered on Ori. This region includes most of the Ori cluster, the highest-density region within Orion OB1b. We have developed a statistical procedure to identify the young, low-mass, pre–main-sequence population of the association. We estimate that the cluster has 160 members in the mass range (0:2 M 1:0 M ). The...

We present Gemini GMOS longslit spectroscopy of the isolated S0 galaxy NGC 3115. We have determined kinematical data and Lick/IDS absorption line-strength indices for the major axis out to around 9 kpc and for the minor axis out to around 5 kpc (around 2Re). Using stellar population models which include the effects of variable [α/Fe] ratios we derive metallicities, abundance ratios and ages for...

ii Population Council, a nonprofit, nongovernmental research organization established in 1952, seeks to improve the wellbeing and reproductive health of current and future generations around the world and to help achieve a humane, equitable, and sustainable balance between people and resources. The Council analyzes population issues and trends; conducts research in the reproductive sciences; de...

Although considerable research has been conducted on playing active video games (AVGs), the majority has focused on proximal play. Little has been reported on distance-based AVG play, identified in this paper as virtual online active games (VOAGs). The potential benefits of VOAGs lies in their ability to connect similar and different populations, genders and generations over the Internet for a ...

With a rapid deployment of mobile devices, mobile learning gives rise to new possibilities for extending learning opportunities. Nevertheless, current research on mobile learning has mostly been aimed at enhancing learning of school or college students. In this light, the paper seeks to throw light on the potential of mobile learning for elderly. We describe in this paper a research study for e...

the application of equiframe in the analysis of sexual and reproductive health policies by ivanova et al to a new thematic area, their selection of only some of the core concepts of human rights in health service provision and the addition of new vulnerable groups relevant to the purpose of their analysis, are all very welcome developments. we also applaud their application of equiframe to poli...

with the rise of nicholas sarkozy to power, in an evident spin, france’s foreign policy became american in essence. from the very first year of his presidency sarkozy adopted a parallel policy to the u.s. atlanticism is considered an important and inevitable leverage in sarkozy’s foreign policy and his government marked a high point in foreign policy after de goulle. this new approach is comple...