Sharif Digital Repository

Introductions: The routing Problem in SMS networks, start from subscriber called origin and end to other subscriber called destination. SMSs passed throw the switches, relay and routers. When the traffic of a SMS network increase, a global optimization is required to reduce the charge that SMS center must be paid meanwhile maximize total flow and minimize delivery time.
Methods: in this study after investigation in Short Message service, Routing Algorithms and letreture review, first we used our models for Telephone networks. The total model with Features and constrains was build. In order apply this model on Mobile networks, with using Latin Multy Plications Algorithms we develope a... 

Quantum states are highly susceptible to noise and can lose their coherence easily. Thus, for the large-scale quantum algorithms results to be valid, it is necessary to use an error correction process to eliminate the errors. The theory of quantum error correction provides a comprehensive methodology for protecting quantum states against noise. In this theory, by adding ancilla qubits and carefully encoding, quantum states are prepared such that they can be robust to a great extent against errors. To perform a scalable quantum computation, we face an even more daunting task. If our quantum gates are imperfect, everything we do will add to the error. So the quantum error correction could be... 

In this study, a semi-structured model for the growth and production of lactase in an aerated bioreactor by Kluyveromyces marxianus, growing on cheese whey, was developed. Three modes of culture, consisting of batch, fed-batch and a controlled-release system were investigated. Modeling was based on three metabolic pathways, representing the growth of Kluyveromyces marxianus. Lactose and oxygen consumption, cell growth, and also lactase and ethanol production rates were determined in the model. Induction was considered as the governing mechanism for enzyme production. The model showed good agreement with the experimental data in batch and fed-batch cultures. Controlled-release system is a... 

The objective of this paper is to explore and characterize the effect of practical construction details on the dynamic and gravity load carrying capacity of cold-formed steel framed shear walls sheathed with Oriented Strand Board (OSB). In order to improve the lateral stiffness and shear strength of cold-formed steel (CFS) framing wall, an innovative CFS wall equipped with OSB and gypsum boards are experimentally studied in this thesis. For this purpose, six K-braced frames with and without sheathing boards are investigated experimentally under lateral cyclic loading and gravity forces. The failure modes, loaddisplacement responses, and energy absorption capacity of the specimens were... 

Kluyveromyces genus is known to be one of the important yeast used in processes of industrial biotechnology. This importance is due to production of Lactase, key enzyme in dairy industries that catalyses hydrolysis of lactose in milk. But high concentration of carbon source which is lactose in most cases, causes crab-tree effect, a metabolic pathway that leads to more production of ethanol rather than lactase. In this research the main purpose was to control the initial lactose concentration in medium to prevent decrease in enzyme activity. Controlled release system via Ethylene Vinyl Acetate tablets was chosen as a controller mechanism of lactose concentration as EVA was a well-known...