Sharif Digital Repository

Research and information available shows that the number of natural disasters are increasing dramatically; hence disaster management is being raised as one of the most important topics in this field. The relief logistics is the greater part of disaster management model.
In this study, in order to manage the logistics activities effectively in a response phase of an earthquake, a hybrid meta-heuristic algorithm is developed for a transportation network. Then, the proposed algorithm is tested on a small part of Tehran.
 

To provide a stable foundation for human knowledge Descartes presumed that human being is composed of two distinct substances, the mind and the body. But, the solution through which he wanted to explain the correlation between these substances, was not accepted by other philosophers, and thereafter this problem was known as mind-body problem. This problem arises some other philosophical problems including solipsism and the problem of other minds. In this thesis, considering the grammar of such words like memory, understanding, and thinking I will show that having an exact description of these concepts we would be able to escape from these inclination to seek something behind these words, and... 

In Radiation Detection Systems applied in Spectroscopy and Imaging, if the rate of particle incidence with detector is high, the output pulses being stacked up on each other will be expected, which is known as “Pulse Pile-up”. Pulse pile-up might result in a serious disorder of energy and timing data expected from the pulses. In recent decades and after successful implementation of pile-up rejection methods on analog circuits, considering development and progression in the field of digital, different algorithms based on pileup correction methods have been developed to obtain all spectrum information, whether energy, rise time and recorded pulses. Such methods can be compared in different... 

The issue of reliability, which is associated with a low probability of error in a communication system, is an important parameter in information theory. By reliability, we mean a low decoding error probability, and one of the main criteria for this is the zero decoding error probability. In the zero-error probability, the decoding error probability for any code is exactly zero. Error-free capacity was examined by Claude Shannon in 1956. The Shannon capacity of a communication channel is defined using the independent sets of strong products of graph. Shannon calculated the capacity of graphs up to five vertices except the graphC5. Lovász, in 1979, using the upper bound he provided, was able... 

Nowadays, user accounts on websites such as Google, Facebook, and Yahoo are their key to login into other websites and on the Internet. Thus, there is no need for authentication in each website and each user can access his/her other accounts just by logging in Google or Facebook. In background, single sign-on protocols such as OpenID and OAuth are being used. Since single sign-on accounts are very critical and sensitive, they are always under attack of cyber intruders. One of the most important threats is phishing in which one of the seeming trustful components could be attacker.This thesis demonstrates that OpenID providers may not be worthwhile and trustful as they are able to have... 

In this research, a scheduling problem, minimizing the sum of weighted earliness/tardiness in a flow shop sequence-dependent group scheduling (FSDGS) problem, is investigated. In this problem, every job has a distinct due date, early penalty rate, and tardy penalty rate. This problem is typically classified in the literature as F_m | fmls,S_plk,prmu | ∑(w_j^1 E_j+ w_j^2 T_j). A mixed integer linear programming model is developed for the proposed research problem. As the problem is proved to be strongly NP-hard, only small-size problems can be solved with the mathematical model. Thus, a metaheuristic algorithm based on the Particles Swarm Optimization (PSO) algorithm is developed to solve...