A Genetic Algorithm with Design of Experiments Approach to Predict the Optimal Process Parameters for FDM

This paper describes a Genetic Algorithm (GA) with Design of Experiments (DoE) approach to predict the optimized surface roughness and porosity characteristics of the parts produced using ABS material on stratasys FDM 2000 machine. The Mathematical Model (MM) was developed by using Response Surface Methodology (RSM). It is to predict and investigate the influence of selected process parameters namely slice thickness, road width, liquefier temperature and air gap and their interactions on the surface roughness and porosity. The developed MM is the fitness function in GA in order to find out the optimal sets of process parameters and to predict the corresponding surface quality characteristics. These results have been validated and the experimental results after GA are found to be in conformance with the predicted process parameters.Mechanical Engineerin

NEUROPROTECTIVE EFFECT OF SARGASSUM ILICIFOLIUM TURNER C. AGARDH ON ACETYLCHOLINESTERASE ACTIVITY AND ATTENUATION OF SCOPOLAMINE-INDUCED AMNESIA IN RODENTS

ABSTRACTObjective: In day to day life, occupational stress is responsible for oxidative stress by altering sleep cycle. Scopolamine induction of amnesia correlatesto stress-induced amnesia in youngsters. Hence, the present study was aimed to investigate the anti-amnesic effect of ethanolic extract and ethylacetate fraction of Sargassum ilicifolium Turner (C. Agardh) against scopolamine.Methods: In this study, seven groups of animals were used and scopolamine (0.4 mg/kg b.wt/intraperitoneally) was administered to all groups exceptpositive control to induce memory loss. Elevated plus maze, Morris water maze served as an exteroceptive behavioral model in testing memory inyoung rats. Brain acetylcholinesterase, a biomarker enzyme was estimated. Finally histopathology of cerebral cortex was performed.Results: The extract and fraction treated group showed an interesting result in memory scores, and the significant enzyme inhibition might beresponsible to attenuate acetylcholine in cholinergic neurons to enhance memory. Finally, histopathology of cerebral cortex proved the neuroprotectiveeffect of S. ilicifolium. All the results were statistically significant.Conclusion: Neuroprotective role of S. ilicifolium Turner C.Agardh was highlighted well in this study and it will be interesting infuture to dissect outthe kinetics of individual components in the fraction and to strengthen the phytomolecule role by insilico studies.Keywords: Learning, Memory, Acetylcholinesterase, Sargassum ilicifolium Turner (C. Agardh)

Algebraic Coding Theory Using Pell Equation x2 − 8y2 = 1

An interdisciplinary field with significant practical use is cryptography. The difficulty of specific mathematical computing tasks affectsa public key cryptosystem’s security. The technique for coding anddecoding the messages was described in this work, utilising the solutions of Pell equation x2 - 8y2 = 1 and matrix Q8∗. It was notedthat messages can be turned into an even size that is then divided intoslabs

Recognizing Campus Landscapes as Learning Spaces

American higher education institutions face unique twenty-first century changes and challenges in providing good, holistic learning spaces for the diverse and evolving needs of today’s college student. Continued enrollment growth, societal and technological changes, financial challenges, and a need for increased universal and open access create ever more diverse, changing and complex US university systems. In 2009, 20.4 million students were enrolled in 2- or 4-year colleges and universities. By 2019, enrollments are expected to rise 9% for students under age 25, and rise 23% for students over the age of 25 (Snyder & Dillow, 2011). Questions of where, when, how, and with whom today’s college students learn, confront the traditional notions of how university spaces are designed and used for effectiveness (Hashimshony & Haina, 2006). Therefore, we propose that the natural landscape of a university campus is an attentional learning resource for its students

Recognizing Campus Landscapes as Learning Spaces

Today’s university learning environments must encompass more than technology upgrades and classroom additions - the entire campus must be perceived as a holistic learning space that provides a holistic learning experience. The potential of campus nature in replenishing student cognitive functioning is underutilized. Recognizing campuses as vital learning landscapes harnesses their potential as attentional resources. A whole-systems approach to campus design requires communication and collaboration among academic, administrative and facilities planning stakeholders. This approach goes beyond the aesthetic value of campus open spaces for student recruitment to advertising its educational value that emphasizes something deeper than what meets the eye

Fuzzy Logic Controller for grid connected Wind Energy Conversion System

The use of renewable power sources, like wind power, has been increased recently due to climatic changes caused by fossil fuels and fast depletion of fossil fuels. This has lead to the tremendous increase in the interconnection of wind turbines to power system grid. This interconnection on a large number in to grid causes problems such as power quality, maintaining system voltage, reactive power compensation, control of grid frequency and aspects of power system grid stability. In this proposed scheme, a fuzzy logic based controller is employed for a STATCOM to improve the power quality. The proposed control scheme supplies the required reactive power to the system and thus relieves the source, leading to Unity Power Factor (UPF) at the source and also it injects currents to reduce total harmonic distortion (THD) to satisfy IEC standard. For extracting the reference currents, an instantaneous reactive power theory based control algorithm is employed. To determine the effectiveness of the proposed fuzzy logic controller, a comparative analysis is also performed with a PI controller and the results have been presented