193 research outputs found
Transcriptase–Light: A Polymorphic Virus Construction Kit
Many websites use JavaScript to display dynamic and interactive content. Hence, attackers are developing JavaScript–based malware. In this paper, we focus on Transcriptase JavaScript malware.
The high–level and dynamic nature of the JavaScript language helps malware writers to create polymorphic and metamorphic malware using obfuscation techniques. These types of malware change their internal structure on each infection, making them difficult to detect with traditional methods. These types of malware can be detected using machine learning methods.
This project creates Transcriptase–Light, a new polymorphic construction kit. We perform an experiment with the Transcriptase–Light against a hidden Markov model. Our experiment shows that the HMM based detector failed in detecting Transcriptase–Light. After observing the results, we try to detect malware using the decryption part of Transcriptase–Light. To avoid detection, we generate the polymorphic version of the decryption part
AUTOMATIC VEHICLE STABILIZATION SYSTEM
The document gives information on controlling the load of heavy duty vehicles while taking turn in order to avoid tumbling of vehicle due to inertia. Also this system is to control the speed of vehicle during turn as excess speed during sharp turn can also result in rollover of vehicle, i.e. vehicle flips around its rolling axis. The system consists of the closed loop control mechanism, in which the on board computer works as an error detector, which detects any deviation of certain parameters responsible for stability of the vehicle. Then the necessary control action is performed by the actuators to compensate the deviation in those parameters
SWITCHES ON FINGERTIPS
The document gives information on controlling all electrical devices viz. Tube lights, airconditioners, computers, fans of every floor of the building from a single computer. To perform this task the main functional components are micro-controller and RS-485.This application can be accessed by the users anywhere anytime and from any device like desktop or laptop. This project is aimed at consumption of electricity by switching off the appliances. It is the future of corporate world due its various applications
Design and Performance of a VOC Abatement System Using a Solid Oxide Fuel Cell
There has always been a desire to develop industrial processes that minimize the resources they use, and the wastes they generate. The problem is when new guidelines are forced upon long established processes, such as solvent based coating operations. This means instead of integrating an emission reduction technology into the original design of the process, it is added on after the fact. This significantly increases the costs associated with treating emissions.
In this work the ultimate goal is the design of an “add-on” abatement system to treat emissions from solvent based coating processes with high destruction efficiency, and lower costs than systems in current use. Since emissions from processes that utilize solvent based coatings are primarily comprised of volatile organic compounds (VOCs), the treatment of these compounds will be the focus.
VOCs themselves contain a significant amount of energy. If these compounds could be destroyed by simultaneously extracting the energy they release, operational costs could be substantially reduced. This thesis examines the use of model-based design to develop and optimize a VOC abatement technology that uses a Solid Oxide Fuel Cell (SOFC) for energy recovery. The model was built using existing HYSYS unit operation models, and was able to provide a detailed thermodynamic and parametric analysis of this technology.
The model was validated by comparison to published literature results and through the use of several Design of Experiment factorial analyses. The model itself illustrated that this type of system could achieve 95% destruction efficiency with performance that was superior to that of Thermal Oxidation, Biological Oxidation, or Adsorption VOC abatement technologies. This was based upon design criteria that included ten year lifecycle costs and operational flexibility, as well as the constraint of meeting (or exceeding) current regulatory thresholds
Hepaticoduodenostomy as a technique for biliary anastomosis in children with choledochal cyst: An experience with 31 cases
Objective The aim of this study was to investigate the efficacy and complications of hepaticoduodenostomy in the treatment of choledochal cyst in children. Summary background data The conventional treatment of choledochal cyst includes Roux-en-Y hepaticojejunostomy for biliary reconstruction. This procedure, however, disrupts normal bowel continuity and requires two anastomoses. We studied the technique of hepaticoduodenostomy as an effective alternative to this technique.Patients and methods A total of 31 children undergoing hepatoduodenostomy for choledochal cyst over a period of 9 years were included in this study.Results The patients operated upon had outcomes similar to those treated by the Roux-en-Y technique in other studies.Conclusion Hepaticoduodenostomy is an effective alternative to the conventional Roux-en-Y anastomotic technique in cases of choledochal cyst in children. Keywords: choledochal cyst, hepaticoduodenostomy, pediatri
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