Multi-stage software router architectures permit to overcome several limitations inherent to single stage software routers. One of the key elements of the multi-stage architecture under study are the load balancers, which are used to distribute the load among backend routers. However, using a PC (Personal Computer) as a load balancer could create a performance bottleneck in the overall architec...

We investigate a game played on a hypergraph H = (V,E) by two players, Balancer and Unbalancer. They select one element of the vertex set V alternately until all vertices are selected. Balancer wins if at the end of the game all edges e ∈ E are roughly equally distributed between the two players. We give a polynomial time ∗Research supported in part by a USA-Israel BSF grant, by the Israel Scie...

Chromosomal inversions are valuable genetic tools for mutagenesis screens, where appropriately marked inversions can be used as balancer chromosomes to recover and maintain mutations in the corresponding chromosomal region. For any inversion to be effective as a balancer, it should exhibit both dominant and recessive visible traits; ideally the recessive trait should be a fully penetrant lethal...

Clustering with a single -system image view is the most commonly used approach to increase throughput of a Web site. There are two types of clustering architecture: centralized IP cluster and distributed IP cluster. In centralized IP cluster, Load Balancer distributes incoming requests of clients to an appropriate Real Server based on load characteristics. However, the availability and scalabil...

Rotating machinery, including machining spindles, industrial turbomachinery, and aircraft gas turbine engines, are very commonly used in industry. One major problem faced by these machineries is the harmful, imbalance-induced vibration. Many methods have been developed to reduce this vibration: o!-line balancing methods [1], on-line active balancing methods using mass redistribution devices [2}...

Load balancing faces new challenges in the framework of autonomic servers deployed in data centers. With traditional push-based strategies, the authoritative decision is made by the load balancer, which decides to which server the requests are forwarded. However, the autonomy of servers is often incompatible with these strategies, as they may accept or refuse to process a request on a voluntary...

We generated FM7a and CyO balancer chromosomes bearing a Tubby1 (Tb1) dominant transgene. Flies heterozygous for these FM7a and CyO derivatives exhibit a phenotype undistinguishable from that elicited by the Tb1 mutation associated with the TM6B balancer. We tested two of these Tb-bearing balancers (FM7-TbA and CyO-TbA) for more than 30 generations and found that the Tb1 transgene they carry is...

We constructed green fluorescent protein (GFP)-expressing balancer chromosomes for each of the three major chromosomes of Drosophila melanogaster. Expression of GFP in these chromosomes is driven indirectly by a Kruppel (Kr) promoter, via the yeast GAL4-UAS regulatory system. GFP fluorescence can be seen in embryos as early as the germ band extension stage, and can also be seen in larvae, pupae...

Nowadays, cloud computing is a growing field in research and the marketplace, including virtualization, internet service, computer software, web services. A comprises multiple elements like consumer's data center servers. It provides high availability, efficiency, scalability, mobility, fault tolerance, decreased overhead of users, reduced expenses ownership, on-demand services, etc. Variety Of...