97 articles for “Knowledge-Based Systems”

Research ArticleOpen accessIn the abstractA Secure Key Authentication Scheme Based on the Hardness of Solving Elliptic Curve Discrete Logarithm ProblemIzzmier Izzuddin Zulkepli, Eddie Shahril IsmailA key authentication scheme is a scheme that protects a user’s public key from modification and counterfeiting by an adversary. The new development and improvement of key authentication schemes should be made continuously so that the systems are safe and practical to be used. To the best of our knowledge, there is no key authentication using the elliptic curve so … …Journal of Computer Science, Vol. 16, Issue 5 · 15 May 2020 · 7,435 accessesView PDF Cite

Research ArticleOpen accessIn the abstractComputational Techniques for Stability Analysis of a Class of Dynamic Economic ModelsGeorge E. Halkos, Kyriaki D. TsilikaModern microeconomics and macroeconomics study dynamic phenomena. Dynamics could predict future states of an economy based on its structural characteristics. Dynamic models in discrete time discrete state economic systems may take the form of one single linear difference equation or a system of linear difference equations. In this study we use Xcas and Mathematica as software tools in order to … …American Journal of Applied Sciences, Vol. 9, Issue 12 · 12 Dec 2012 · 7,379 accessesView PDF Cite

Research ArticleOpen accessIn the abstractWellbore Surveying While Drilling Based on Kalman FilteringMahmoud ElGizawy, Aboelmagd Noureldin, Jacques Georgy et al.Problem statement: Oil and gas are global fuels obtained primarily from drilling wells in underground terrestrial reservoirs. Vertical drilling is preferred because of its simplicity and therefore low cost, but subsurface targets can often be procured only by directing the wellbore along predefined non-vertical trajectories. For instance, directional drilling must be employed to reach locations inaccessible to the drilling rig, … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 2 · 30 Jun 2010 · 8,577 accessesView PDF Cite

EditorialOpen accessIn the abstractRe-Paving the Road Built by Chemistry: A Challenge to Biochemistry and BiotechnologyAlberto A. IglesiasBiochemistry’s birth can be placed at the end of the nineteenth century, when Eduard Buchner made a clever interpretation of experimental observations on the generation of gas bubbles after addition (the original purpose was preservation) of sucrose to a yeast crude extract (Lagerkvist, 2005). Intelligently, Buchner concluded that the disaccharide had been fermented by broken cells’ suspension to produce CO2, … …American Journal of Biochemistry and Biotechnology, Vol. 11, Issue 1 · 26 Jan 2015 · 7,461 accessesView PDF Cite

Research ArticleOpen accessIn the abstractInnovations in Corporate Social Responsibility from Global Business Leaders at Panasonic, Thomson Reuters and Nanyang Business SchoolMonica ThielProblem statement: Due to current varied CSR models and how CSR is presently defined and practiced differently in business and society worldwide, global CSR standards are vital to creating best practices of CSR and to increase the competitive advantage of business and society. Approach: Because most CSR business units in global organizations tend to focus on specific and narrow corporate … …American Journal of Economics and Business Administration, Vol. 2, Issue 2 · 30 Sep 2010 · 7,750 accessesView PDF Cite

Research ArticleOpen accessIn the abstractSTRATEGY PATTERNS PREDICTION MODELAram Baruch Gonzalez Perez, Jorge Adolfo Ramirez UrestiMulti-agent systems are broadly known for being able to simulate real-life situations which require the interaction and cooperation of individuals. Opponent modeling can be used along with multi-agent systems to model complex situations such as competitions like soccer games. In this study, a model for predicting opponent moves based on their target is presented. The model is composed by an … …Journal of Computer Science, Vol. 10, Issue 1 · 12 Nov 2013 · 6,854 accessesView PDF Cite

Research ArticleOpen accessIn the abstractThe Implications of Teacher Effectiveness Requirements for Initial Teacher Education ReformS. G. PretoriusProblem statement: School effectiveness research shows that teacher effectiveness is the single most important school-based factor in student success. The effects of poor teaching linger and can be measured for at least three years after students have left the classroom. It is too late to wait until secondary school level for backlogs to be eradicated. Education systems, such as the … …Journal of Social Sciences, Vol. 8, Issue 3 · 26 Mar 2012 · 9,481 accessesView PDF Cite

Research ArticleOpen accessIn the abstractAn Examination of Back Ground and Strategies for Privatization of Agricultural ExtensionBagher ArayeshProblem statement: Agricultural extension as an important tool to achieve food for people has always been faced with challenges. One of these challenges is relation to the privatization of agricultural extension which has been suggested in most countries due to inefficiency of governmental systems of agricultural extension and their financial problems. The main purpose of current study was to examination … …American Journal of Agricultural and Biological Sciences, Vol. 7, Issue 1 · 5 Jan 2012 · 7,787 accessesView PDF Cite

Research ArticleOpen accessIn the abstractAn Adaptive Updating Topic Specific Web Search System Using T-GraphAhmed PatelProblem statement: The main goal of a Web crawler is to collect documents that are relevant to a given topic in which the search engine specializes. These topic specific search systems typically take the whole document's content in predicting the importance of an unvisited link. But current research had proven that the document's content pointed to by an unvisited link … …Journal of Computer Science, Vol. 6, Issue 4 · 30 Apr 2010 · 6,595 accessesView PDF Cite

Research ArticleOpen accessIn the abstractIndoor Characterisation using High-Resolution Signal Processing Based on Five-Port Techniques for Signal Input Multiple Output SystemsSmari Mouheddin, Bel hadj Taher JamelProblem statement: The development of wideband mobile communication systems requires a deep knowledge of the characteristics of the indoor mobile radio channel. The characterization of the indoor multi-path propagation structure is important in developing antifading techniques for high-speed digital radio access. The high-resolution of the estimation of the Time of Arrival (ToA) and the Direction of Arrival (DoA) of multi-path … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 2 · 30 Jun 2009 · 7,684 accessesView PDF Cite