Intelligent agent for formal modelling of temporal multi-agent systems

Software systems are becoming complex and dynamic with the passage of time, and to provide better fault tolerance and resource management they need to have the ability of self-adaptation. Multi-agent systems paradigm is an active area of research for modeling real-time systems. In this research, we have proposed a new agent named SA-ARTIS-agent, which is designed to work in hard real-time temporal constraints with the ability of self-adaptation. This agent can be used for the formal modeling of any self-adaptive real-time multi-agent system. Our agent integrates the MAPE-K feedback loop with ARTIS agent for the provision of self-adaptation. For an unambiguous description, we formally specify our SA-ARTIS-agent using Time-Communicating Object-Z (TCOZ) language. The objective of this research is to provide an intelligent agent with self-adaptive abilities for the execution of tasks with temporal constraints. Previous works in this domain have used Z language which is not expressive to model the distributed communication process of agents. The novelty of our work is that we specified the non-terminating behavior of agents using active class concept of TCOZ and expressed the distributed communication among agents. For communication between active entities, channel communication mechanism of TCOZ is utilized. We demonstrate the effectiveness of the proposed agent using a real-time case study of traffic monitoring system

Utilization of Nitrate and Phosphate by the Green Alga Tetraselmis gracilis Kylin

Nutrient-depleted cells of T. gracilis were grown in sea water containing different concentrations of nitrate and phosphate. Growth rate of cells was ftrst studied by determining the growth constant (k) and generation time (tg

Building a Reliable Steganography System Using Random Key in a spatial Domain of Image

With time progress importance of hiding information become more and more and all steganography applications is like computer games between hiding and extracting data, or like thieves and police men always thieve hides from police men in different ways to keep him out of prison. The sender always hides information in new way in order not to be understood by the attackers and only the authorized receiver can open the hiding message. This paper explores our proposed random method in detail, how chooses locations of pixel in randomly , how to choose a random bit to hide information in the chosen pixel, how it different from other approaches, how applying information hiding criteria on the proposed project, and attempts to test out in code, and in practice, through example

Involvement of fucose in bacterial oxidative stress processes

In this research, bacteria oxidative stress processes was investigated in order to evaluate the role of L-fucose correlated with xanthine oxidase activity in the release of toxin generated by pathogenic bacteria such as Staphylococcus aureus, Klebsiella peneumonia and Escherichia coli (display as normal flora). The ratio of total fucose/ total protein obtained proved that L- fucose can act as an antioxidant factor in cell. The obtained ratio increased 4 and 8.37 times fold in Staphylococcus aureus and Klebsiella peneumonia respectively than in normal bacteria

Evaluating the mechanical performance of hot asphalt mixtures modified with metakaolin as filler

Filler has an essential effect on the behavior of the hot asphalt pavement mixtures (HMA) through reducing the voids in the aggregate skeleton and reducing the temperature susceptibility of the asphalt binder layer. Recently the use of Metakaolin as a Pozzolanic admixture has been investigated to enhance the strength of cement concrete mixture. In this study, an experimental assessment of the mechanical properties of the HMA modified by Metakaolin as partial replacement of cement mineral filler was conducted. Five mixtures containing 0, 25, 50, 75, and 100 Metakaolin replacements percentages of ordinary cement were prepared at their optimum asphalt content. The Marshall properties, temperature susceptibility, and moisture damage are investigated for these mixtures. It was found that the addition of different proportions of Metakaolin filler as replacement of cement has a significant influence on the mechanical behavior of the HMA. The result illustrated that The Marshall's Stability, Flow and, density grow as the Metakaolin content grows until 50%, then the value starts to decrease at 75 and 100%. The air voids and voids in mineral aggregate decrease with increase the Metakaolin content to the lowest value at 50% of Metakaolin. The indirect tensile strength increases continuously as the Metakaolin content increases at 25, 40, and 60 oC, while temperature susceptibility decreases as Metakaolin content increases. The resistance to moisture damage has been improved by adding Metakaolin filler. It is concluded that the hot asphalt mixture can be modified by using Metakaolin as partial replacement mineral filler at 50% and optimum asphalt content of 5.2 %

The Lapin Immune States Associated with Intravenous Injection of Heat Killed Antigen Extracted from Helicobacter pylori Infection in Hilla City

Helicobacter pylori is  considered to be the most common  human bacteria in the pathogenesis of chronic gastritis and peptic ulcer diseases. gastric inflammation associated with the infiltration of various immune cells into the infected gastric mucosa . The immune and inflammatory response is ineffective, allowing lifelong bacterial persistence, the host immune response is unable to clear the infection and may actually contribute to the pathogenesis. The immunogen that injected to an animal  may have a profound on the outer come of the immune responses. Four successive doses of heat killed H. pylori (HpHK) antigen was intravenous injected  in rabbits at five days a part manner. HpHK antigen stimulate specific mucosal and systemic humoral and cellular immune response determined by raised  in the immunoglobulin titers and concentrations, increased the concentrations of C3 and C4 which are the complement compartments with significant increased in the lymphoid cells that formed the rosette form , significant migration inhibition index , increased the concentrations of cytokines (IL-4 & IL-8)  . HpHk antigen induced positive skin test tuberculin type delayed hypersensitivity, in addition to the histopathological changes at different body organ portions of the animals