Design of Realistic Network Traffic Generator and Traffic Anomalies

, M.Sc. Thesis Sharif University of Technology Azadmanesh, Maryam (Author) ; Jahangir, Amir Hossein (Supervisor)

Abstract

Generating realistic network traffic serves capacity planning, traffic engineering, understanding internet service performance and anomaly detection. A useful traffic generator must generate characteristics in flows and packets, and add known internet anomalies to legitimate traffic. In this dissertation, we develop a tool for generating realistic and anomalous traffic. This generator can generate traffic in a scalable, reproducible and stochastic manner. Two methods are proposed for this purpose. In the first method, the traffic is generated according to statistical distribution of packets and flow charactristics. In the second method, traffic is generated by modeling the behavior of...

Investigate the Relationship between the Structure of the Magnetic and Electrical properties of Iron-Based Soft Magnetic Composite Coated with Nanoparticles Magnetite

, M.Sc. Thesis Sharif University of Technology Azadmanesh, Arefe (Author) ; Maddah Hosseini, Hamid Reza (Supervisor) ; Shokrollahi, Houman (Supervisor)

Abstract

In this study, soft magnetic composite properties of iron base with insulation magnetite nanoparticles have been studied. First magnetite nanoparticles were prepared by co-precipitation method. The iron and magnetite particles with different weights were dissolved in acetone until the acetone evaporates and the composition uniformity of iron and magnetite powder was obtained. Then press the button on the 4 samples of 400, 600, 800, 1000 MPa, and the weight of Magnetite 1, 3, 5, 7 and 10 percent were cold. X-ray diffraction and scanning electron microscope test results showed that iron and magnetite are homogenous distributed. The measurement of AC magnetic properties also suggest that by...

Automatic Speech Recognition System for Pilot-Air Traffic Service Units Communications

, M.Sc. Thesis Sharif University of Technology Azadmanesh, Mahsa (Author) ; Bahrani, Mohammad (Supervisor) ; Baba Ali, Bagher (Co-Advisor) ; Pazooki, Farshad (Co-Advisor)

Abstract

Currently, in the Islamic Republic of Iran, after aviation accidents and incidents, conversations between pilots and air traffic controllers are re-examined by the State Air Transport Organization of the Islamic Republic of Iran and turned into text. The Automatic Recognition System for Pilot-Air Traffic Service Units’ Communication helps in the implementation of speech recognition. Reducing the time and cost of converting conversations into texts and creating an aviation database in the country are other uses of this system. In this research, after collecting and refining the actual conversation between pilots and air traffic controllers and examining seven methods, we design a system that...

Cytotoxicity and cell cycle effects of bare and poly(vinyl alcohol)-coated iron oxide nanoparticles in mouse fibroblasts

, Article Advanced Engineering Materials ; Volume 11, Issue 12 , 2009 , Pages B243-B250 ; 14381656 (ISSN) Mahmoudi, M ; Simchi, A ; Vali, H ; Imani, M ; Shokrgozar, M. A ; Azadmanesh, K ; Azari, F ; Sharif University of Technology

2009

Abstract

Super-paramagnetic iron oxide nanoparticles (SPIONs) are recognized as powerful biocompatible materials for use in various biomedical applications, such as drug delivery, magnetic-resonance imaging, cell/protein separation, hyperthermia and transfection. This study investigates the impact of high concentrations of SPIONs on cytotoxicity and cell-cycle effects. The interactions of surfacesaturated (via interactions with cell medium) bare SPIONs and those coated with poly(vinyl alcohol) (PVA) with adhesive mouse fibroblast cells (L929) are investigated using an MTT assay. The two SPION formulations are synthesized using a co-precipitation method. The bare and coated magnetic nanoparticles with...

Cell "vision": Complementary factor of protein corona in nanotoxicology

, Article Nanoscale ; Volume 4, Issue 17 , 2012 , Pages 5461-5468 ; 20403364 (ISSN) Mahmoudi, M ; Saeedi-Eslami, S. N ; Shokrgozar, M. A ; Azadmanesh, K ; Hassanlou, M ; Kalhor, H. R ; Burtea, C ; Rothen Rutishauser, B ; Laurent, S ; Sheibani, S ; Vali, H ; Sharif University of Technology

RSC 2012

Abstract

Engineered nanoparticles are increasingly being considered for use as biosensors, imaging agents and drug delivery vehicles. Their versatility in design and applications make them an attractive proposition for new biological and biomedical approaches. Despite the remarkable speed of development in nanoscience, relatively little is known about the interaction of nanoscale objects with living systems. In a biological fluid, proteins associate with nanoparticles, and the amount and the presentation of the proteins on their surface could lead to a different in vivo response than an uncoated particle. Here, in addition to protein adsorption, we are going to introduce concept of cell "vision",...