Optimal aquifers and reservoirs for CCS and EOR in the Kingdom of Saudi Arabia : An overview

Peer reviewedPublisher PD

Editorial: Special Issue on Recent Advances in Computer and Communication Networks Technology

Dramatic improvements in networking technologies over the past couple of decades have yielded substantial increase in computer and communication capabilities. A number of new networking technologies such as middleware, wireless mesh networks anWiMAX, global IPv6, new generation multimedia, and modern network security started taking off. To date, some of these development efforts have mainly focused on protocol standardization, product development, and network operations besides being research targets. We believe that the accumulated experience in new networking practices now provide interesting research opportunities, not only for the broader network research community, but also for those who have been involved in these advancement developments

Columbus Colony- A National Prototype Community

non

DYNAMIC MODELS FOR INDUCTION CHARGING OF SPHERICAL PARTICLES WITH SURFACE CONDUCTIVITY

The purpose of this research was to investigate the dynamics of induction charging for spherical particles assuming finite volume and surface conductivities, and arbitrary particle permittivity. All results, presented in this thesis, were based on numerical simulations on the COMSOL commercial software using the Finite Element Method. Simulations were performed for a conducting spherical particle with finite surface conductivity. The particle was resting on a ground electrode and exposed to an external electric field. The model was then extended to investigate multiple spherical particles stacked in an arbitrary pattern structure. Saturation charge and actual charging time constant were investigated. The rate of charge accumulation was affected significantly by the particle’s volume and surface conductivities, contact area with the ground electrode, and electric shielding due to proximity of stacked particles. To a less extent, the actual charging time was affected by particle permittivity. Furthermore, shielding the electric field from a given particle reduced its saturation charge significantly

Packet-Switching Network with Symmetrical Topology and Method of Routing Packets

A mesh network for routing a plurality of data segments therethrough, each of the data segments containing address information. The network includes: a first, second, and third switch element each having a respective external input for routing data segments into the network and a respective external output for routing data segments out of the network; a bi-directional coupling between each of the switch elements; and a first controller for interrogating the address information of each of the data segments inbound into the first switch element. The exit pathway for any inbound data segment received by a switch element is selected according to the address information of that data segment, and if a contention exists for the exit pathway, further according to a priority designator of that data segment. The first external output, if free and if the first switch element is the outbound destination for that data segment, will be selected as the exit pathway, otherwise one of said bi-directional couplings in communication with the first switch element will be selected as the exit pathway. Also, an associated method and computer executable program code on a computer readable storage medium for routing a plurality of data segments through a mesh network

A photometric and spectroscopic survey of solar twin stars within 50 parsecs of the Sun: I. Atmospheric parameters and color similarity to the Sun

Solar twins and analogs are fundamental in the characterization of the Sun's place in the context of stellar measurements, as they are in understanding how typical the solar properties are in its neighborhood. They are also important for representing sunlight observable in the night sky for diverse photometric and spectroscopic tasks, besides being natural candidates for harboring planetary systems similar to ours and possibly even life-bearing environments. We report a photometric and spectroscopic survey of solar twin stars within 50 pc of the Sun. Hipparcos absolute magnitudes and (B-V)_Tycho colors were used to define a 2 sigma box around the solar values, where 133 stars were considered. Additional stars resembling the solar UBV colors in a broad sense, plus stars present in the lists of Hardorp, were also selected. All objects were ranked by a color-similarity index with respect to the Sun, defined by uvby and BV photometry. Moderately high-resolution, high-S/N spectra were used for a subsample of equatorial-southern stars to derive Teff, log g, and [Fe/H] with average internal errors better than 50 K, 0.20 dex, and 0.08 dex, respectively. Ages and masses were estimated from theoretical HR diagrams. The color-similarity index proved very successful. We identify and rank new excellent solar analogs, which are fit to represent the Sun in the night sky. Some of them are faint enough to be of interest for moderately large telescopes. We also identify two stars with near-UV spectra indistinguishable from the Sun's. We present five new "probable" solar twin stars, besides five new "possible" twins. Masses and ages for the best solar twin candidates lie very close to the solar values, but chromospheric activity levels range somewhat. We propose that the solar twins be emphasized in the ongoing searches for extra-solar planets and SETI searches.Comment: 25 pages, 15 figures, 14 table

Reply to Comment on ``Can gravity distinguish between Dirac and Majorana neutrinos?''

This is a reply to a comment (gr-qc/0610098) written by Nieves and Pal about our paper (gr-qc/0605153) published in Phys. Rev. Lett. 97, 041101 (2006).Comment: 1 page, no figures, REVTe

Características físico-químicas do leite bovino, após o tratamento da mastite subclínica causada por staphylococcus aureus durante a lactação.

bitstream/CPPSE/17522/1/Boletim13.pd

An Analytical Approach for Mobility Load Balancing in Wireless Networks

Management of mobility especially balancing the load of handoff for wireless networks is an essential parameter for wireless network design and traffic study. In this paper, we present analytical mobility management in high speed wireless mobile networks focusing on factors such as the number of channel slots and offered load. We demonstrate the performance of handoffs with mobility consideration using several metrics including the alteration of states prior to reaching a cell boundary, the speed of mobile terminal, and the distance between a mobile terminal and a cell boundary. We mainly focus on the performance evaluation for the factor of mobility with taking into account the high speed status of a user