Recent Posts

Title Description Creator created Image
Dependable Systems - Review A review quiz which addresses multiple discussion points about dependable systems. Dr. Osama M. Khaled Oct 08, 2026 07:51 PM
Formal methods and dependability This quiz covers the key principles, benefits, techniques, and adoption challenges of formal methods in dependability. Dr. Osama M. Khaled Oct 06, 2026 03:31 AM
Dependable Processes This comprehensive quiz which covers the key concepts of dependable software processes, including process characteristics, key development activities, regulatory compliance, quality/change management, and agile integration. Dr. Osama M. Khaled Oct 05, 2026 11:20 PM
Redundancy and Diversity This comprehensive quiz evaluates key concepts of redundancy and diversity in sociotechnical system dependability, covering strategies, trade-offs, and real-world implementations Dr. Osama M. Khaled Oct 04, 2026 04:13 AM
Punnett Square & Genetics Simulator An interactive genetics tool that simulates monohybrid, dihybrid, and sex-linked crosses with real-time ratio calculations, visual Punnett squares, and multi-format data export options. Dr. Osama M. Khaled Oct 03, 2026 12:40 AM
Sociotechnical systems A sociotechnical system is a system where technology and human/organizational factors work together, and both must be considered to understand how the system performs and how dependable it is Dr. Osama M. Khaled Sep 30, 2026 08:39 PM
Dependability properties There are five principal dimensions to dependability, which are availability, reliability, safety, and security Dr. Osama M. Khaled Sep 26, 2026 05:44 AM
Importance of dependable systems The quiz covers the reasons why system dependability is important and how it impacts users and revenue Dr. Osama M. Khaled Sep 26, 2026 03:35 AM
Propositional Logic : Comprehensive Review Covers inference rules, conclusions from hypotheses, proof sequence justifications, validity proofs, additional derivation rules, verbal arguments, the deduction method, and the defense attorney argument. Dr. Osama M. Khaled Sep 14, 2026 04:26 AM
Propositional Logic - Review Reviews key techniques and main ideas for propositional logic. Dr. Osama M. Khaled Sep 13, 2026 11:54 PM
Deduction Method and Other Rules Covers the deduction method, hypothetical syllogism, and shortened proof sequences. Dr. Osama M. Khaled Sep 13, 2026 11:54 PM
Derivation Rules Covers equivalence rules, inference rules, and how they are applied in proof sequences. Dr. Osama M. Khaled Sep 13, 2026 11:54 PM
Valid Arguments Covers hypotheses, conclusions, valid argument as tautology, proof sequences, and correctness/completeness. Dr. Osama M. Khaled Sep 13, 2026 11:54 PM
Exercise 3: Translating Conditionals and Basic Connectives Covers translating everyday phrases such as "sufficient condition," "necessary condition," and "only if" into symbolic conditional statements, along with writing and negating simple disjunctions and conjunctions. Dr. Osama M. Khaled Sep 06, 2026 06:52 AM
Exercise 6: Functional Completeness, Multi-Valued Logic, and Logic Puzzles Covers which sets of logical connectives are functionally complete, extending truth tables to three-valued logic, and solving classic self-referential logic puzzles. Dr. Osama M. Khaled Sep 06, 2026 02:03 AM
Exercise 5: Logical Equivalence, Tautologies, and Applications Covers testing logical equivalence, identifying the contrapositive of a conditional, verifying tautologies, and applying propositional logic to search-engine queries, program conditions, and combinatorial counting. Dr. Osama M. Khaled Sep 06, 2026 02:03 AM
Exercise 4: Translating Compound Statements Between English and Symbolic Form Covers translating more complex compound statements back and forth between English sentences and symbolic logical notation. Dr. Osama M. Khaled Sep 06, 2026 02:03 AM
Exercise 2: Evaluating Compound Well-Formed Formulas Practices evaluating compound well-formed formulas (WFFs) built from AND, OR, and negation, given specific truth-value assignments for each variable. Dr. Osama M. Khaled Sep 06, 2026 02:03 AM
Exercise 1: Statements and Truth Values Introduces what counts as a genuine logical statement, then practices evaluating the truth values of simple conjunctions, disjunctions, and conditionals built from basic number facts. Dr. Osama M. Khaled Sep 06, 2026 02:02 AM
Algorithms in Formal Logic The foundational concepts of algorithms in logic, including truth table scaling, pseudocode structure, shortcut tautology testing for conditional expressions, and identifying contradictions in truth assignments Dr. Osama M. Khaled Sep 04, 2026 11:42 PM
Logical Connectives in the Real World This quiz tests your understanding of practical applications of formal logic. It covers how search engines utilize logical connectives (AND, OR, NOT) to refine web queries, how logical expressions simplify program code and control execution flow, and how electronic gates implement these truth tables directly in computer circuitry. Dr. Osama M. Khaled Sep 03, 2026 10:10 PM
The Polar Coordinate System Covers the pole, polar axis, directed angle, negative values of r, multiple representations of the same point, and the relations between polar and Cartesian coordinates. Dr. Osama M. Khaled Aug 24, 2026 10:53 PM
General Linear Equation, Parallel and Perpendicular Lines, and the Angle Between Lines Covers the general form Ax+By+C=0, its slope and intercepts, the slope conditions for parallel and perpendicular lines, and the formula for the angle between two lines. Dr. Osama M. Khaled Aug 24, 2026 10:53 PM
Angle of Inclination and Slope of a Line Covers the definition of the angle of inclination, the slope of a nonvertical line, and the relation tan(theta) = slope. Dr. Osama M. Khaled Aug 24, 2026 10:52 PM
Loci and Their Equations Covers the concept of a locus, the three-step method for finding the equation of a locus, and several worked loci based on distance conditions. Dr. Osama M. Khaled Aug 24, 2026 10:45 PM
Equations of a Line: Point-Slope, Slope-Intercept, Two-Point, and Intercept Forms Covers the equations of horizontal and vertical lines, and the point-slope, slope-intercept, two-point, and intercept forms of the equation of a nonvertical line. Dr. Osama M. Khaled Aug 24, 2026 10:45 PM
The Section (Midpoint) Formula Covers the midpoint formula and the general section formula for a point dividing a segment internally in a given ratio. Dr. Osama M. Khaled Aug 24, 2026 10:45 PM
Directed Distance and the Distance Formula Covers directed distance (signed length) between points on horizontal and vertical segments, and the distance formula derived from the Pythagorean theorem. Dr. Osama M. Khaled Aug 24, 2026 10:45 PM
Introduction to Coordinate Geometry and the Cartesian Plane Covers the historical roots of geometry, the axiomatic approach of Euclid, the analytic approach of Descartes, and the rectangular Cartesian coordinate system with its quadrants. Dr. Osama M. Khaled Aug 24, 2026 10:45 PM
Denseness and Completeness of Real Numbers Covers the denseness property, bounded and unbounded sets, and the least upper bound / greatest lower bound (completeness) properties. Dr. Osama M. Khaled Aug 19, 2026 11:03 AM