This study provides a detailed analysis of the existing problems with nuclear safeguards and material accounting in Russia by comparing the existing situation both to U.S. methods and to the system of controls that existed in the Soviet era. It also examines recent U.S. efforts under the Nunn-Lugar initiative to improve safeguards and the system of material accounting and control. Finally, it c...

Adam N. Stulberg is Assistant Professor at the Sam Nunn School of International Affairs at the Georgia Institute of Technology. Previously, he was as a consultant at RAND and Senior Research Associate at the Center for Nonproliferation Studies(CNS). He has written several articles and monographs on the strategic implications of Russian regionalism, as well as on energy security issues in the fo...

Previous experiments demonstrated that aqueous OH radical oxidation of glyoxal yields low-volatility compounds. When this chemistry takes place in clouds and fogs, followed by droplet evaporation (or if it occurs in aerosol water), the products are expected to remain partially in the particle phase, forming secondary organic aerosol (SOA). Acidic sulfate exists ubiquitously in atmospheric water...

Cloud condensation nuclei (CCN) affect cloud droplet formation processes as well as number concentration. An increase in cloud droplet number concentration influences the Earth’s radiative balance by increasing the reflected incoming solar radiation. Chemical composition influences the properties of the aerosol particles, which impact their ability to act as CCN. Organic functional groups in pa...

Blue Compact Dwarf and Dwarf Irregular galaxies are generally believed to be unevolved objects, due to their blue colors, compact appearance and large gas fractions. Many of these objects show an ongoing intense burst of star formation or have experienced it in the recent past. By means of 2-D hydrodynamical simulations, coupled with detailed chemical yields originating from SNeII, SNeIa, and i...

Several recent experimental and allalytical investigations of cavitating flows have revealed new phenomena which clearly affect how we should view cavitation growth arid collapse and the strategies used t o ameliorate its adverse effects. On the scale of individual bubbles it is now clear that the dynamics and acoustics of single bubbles are severely affected by the distortion of the bubble by ...

The convention of cloud computing has increased promptly in the society. Cloud computing have many benefits in terms of accessibility of data and low expenditure. A fundamental characteristic of the cloud services is that user’s data are usually processed remotely in unknown machines that users do not operate. It can be transformed into a momentous roadblock to the wide adoption of cloud servic...