Abstract-A Fault-tolerant dynamic scheduler meant for grid applications that uses job replication along with combines the compensation of static scheduling, specifically no overhead for the mistake free case, and low overhead in case of a fault. The dependency arrangement of a parallel program can be described by means of a directed acyclic graph (DAG). Scheduling graph consists of ordering the jobs and mapping them to processing units. Faults can happen at any point during time. A fault can ...
Introduction The focus of this assignment is to study flow characteristics in the transition regime in converging diverging nozzles using fluent. GAMBIT was used to create the mesh geometry. Solidworks CAD software was used to create the geometry. The Study will also describe the method used for simulating flows and the specific geometry and flow conditions. Fluent has been used to model the fluid flow in a convergent-divergent nozzle. Literature review For this assignment, compressible flow ...
Effect Of Some Environmental Factors On Hydrogen Production Introduction Biological hydrogen production can be carried out by photo- and dark-fermentation processes. Hydrogen evolution by dark-fermentation has been treated with little attention, while hydrogen evolution by photosynthetic microorganisms has been extensively studied. Photosynthetic bacteria are favorable candidates for biological hydrogen production due to their high conversion efficiency and versatility in the substrates they ...
Introduction History The concept of Sustainability began in the 1960's with numerous authors exploring the concern of how environmental actions in the present affect the "Ability of future generations to meet their own needs". The model of Sustainability progressed into international forums throughout the 1970's. The United Nations Conference on the Human Environment in 1972, and Habitat in 1976 discussed the "need for a changed approach to development". "In 1987 the World Commission on Envir...
1. Introduction Traditional industrial processes have been affected by technologies for oxygen separation from air and partial oxidation of hydrocarbons, based on dense ceramic membranes with mixed oxygen ionic and electronic conductivity (MIECM). These provide a number of economic and environmental benefits with respect to industrial scale methods of pressure swing adsorption and cryogenic separation processes due to their possibility to integrate oxygen separation and partial oxidation into...
Nowadays, the proportion of renewable energy is progressively becoming substantial in many sectors such as power generation, heating and cooling, transport fuels, and off-grid energy services. Indeed, reductions of the greenhouse gas emissions and dependency to the fossil-fuels constitute a priority for many countries. In order to reduce its emissions and secure its energy supply, the European Commission set ambitious objectives to promote the exploitation of renewable energy resources. The E...
The landing gear, is a structure (or mechanism) attached to the fuselage (or the body) of the aircraft, helps the aircraft during landing, take-off and ground handling operations. The landing gear plays important role absorbing the crush (or thrust) while landing and thus ensure lower crush related injuries and material damages. For achieving this "crush worthiness" require optimum design of the springs of the landing gears. I have started the process of the "optimum design" of the landing ge...
The Landing gear, an important part of a helicopter, assists the helicopter to land. So, when the helicopter is in land condition, the landing gear should withstand the whole weight of the helicopter. Apart from this, it should also withstand the thrust while landing operation is on. The landing gear of a helicopter can be of three types: Skid type Wheel type The skid type landing gear is the simplest one and cheaper to manufacture. Some skids allow the helicopter to land even on water. If th...
The Landing gear, an important part of a helicopter, assists the helicopter to land. So, when the helicopter is in land condition, the landing gear should withstand the whole weight of the helicopter. Apart from this, it should also withstand the thrust while landing operation is on. The skid type landing gear is the simplest one and cheaper to manufacture. Some skids allow the helicopter to land even on water. If the helicopter need to land on hard surfaces (like runway) regularly, then some...
The landing gear is an important part of an aircraft as far as the take-offs and landings are concerned. The landing gear mechanisms (or structures) are pretty simple in case of the commercial helicopter as compared to the commercial airplanes. But, that is not the case for the naval helicopters. Because of the not-so-friendly landing conditions, the naval helicopter must have sophisticated landing gear mechanism connected with its fuselage. The design of the landing gear mechanism for the na...
