Conceptual-Based Writing Exercises in a Circuit Analysis Course

Introduction to Linear Circuit Analysis and Modelling

Between 2008 and 2010 an introductory circuit analysis course for second year engineering students had its lectures recorded (2008 was audio only, other years were by video) and the recordings were made available to registered students as a supplemental resource. Attendance to lectures was still required. In 2011 an introductory programming course was recorded in a similar way. In each of these offerings the students were anonymously surveyed at the end of the course using an online survey tool with most questions using a five point Likert category scale. The survey looked at the perceived usefulness of the recordings, the approach to watching and the impact on attendance. The responses showed strong support to having video lecture capture and the reported use of the videos was to watch selected material. There was a difference between the courses on the impact on attendance, with the circuit analysis course indicated little impact on attendance, whereas the responses from the other course indicates more missed lectures due to the availability of recordings.

Application of hierarchical linear modelling to the study of trajectories of behavioural development

The wye-to-delta (Y–Δ) transformation is part of every circuit analysis course. In electric circuits textbooks, the transformation is found by comparing the two networks and making sure that the resistance between each pair of nodes in one network is the same as the resistance between the same pair of nodes in the other network. The two networks are compared as open-circuit networks. This creates confusion among students because usually the network is part of a larger closed-circuit network. In this paper, an alternative method is proposed. The new method starts from one configuration and finds the corresponding equivalent configuration by deriving currents and voltages, as part of a closed circuit. This method can be adopted in circuit analysis courses to help students develop a deeper understanding of this topic.

PURPOSE Cardiac disease is the leading cause of death in renal transplant recipients. Endothelial dysfunction, a physiologic marker of atherosclerosis, has been reported in this population. Risk factor assessment and disease modification is imperative to reduce cardiovascular risk in transplant patients. Researchers have shown that a single bout of exercise increases endothelial dilatation in animals. However, the effects of acute exercise on endothelial dysfunction in humans have not been extensively studied. Scientific study of the effects of acute exercise on endothelial dysfunction in renal transplant patients is important since atherosclerotic cardiovascular disease risks are associated with significant morbidity and mortality in these patients. METHODS The study was designed to compare the effect of a 30-min walk at moderate intensity on brachial artery endothelial function, fasting cholesterol (FC), triglycerides (TGs), high density lipoproteins (HDL-C), low density lipoproteins (LDL-C), and C-reactive protein (CRP) in kidney transplant recipients compared to healthy individuals. Male and female subjects included 11, kidney transplant recipients, and 11 sedentary healthy individuals. A 2 × 2 × 4 mixed factorial analyses of variance (ANOVA) was conducted to analyze the dependent variable, brachial artery inner absolute diameter. Five 2 × 2 mixed ANOVAs were used to analyze the dependent variables FC, TGs, HDL-C, LDL-C, and CRP. RESULTS: A significant interaction was found for group and occasion for the dependent variable endothelial diameter, F (1, 21) = 18.46, p < .05. No significant interactions were found for group and time (p = .07), occasion and time (p = .58) and group, occasion, and time (p = .78). No significant interaction and main effects (p > .05) were found with regard to the dependent variables: HDL-C, LDL-C, FC, and CRP. A significant main effect for group was found across testing occasions with regard to TGs. The transplant group had significantly (p = .01) higher TGs (M = 151.14 mg/dL, SD = 87.76) when compared to the healthy group (M = 77.73, SD = 17.32). CONCLUSIONS The 30-min walk caused a vasodilatory response on the healthy group and none on the transplant group. No changes in blood parameters were seen for both groups. The increased diameter in the control group may represent an immediate mechanism by which vascular compliance increases with an isolated bout of exercise. No vasodilatory response in post transplant together with the effects of immunosuppressive drugs and several cardiovascular risk factors that included high BMI, and %BF could be associated with endothelial dysfunction in this population.

Nowadays, Information and Communication Technologies (ICT) make great strides in computer assisted education. They enable development of new, Self-Directed Learning (SDL) driven, models of teaching and learning, and among them, Flip Teaching (FT) seems to be the most promising one. The flipped classroom is based on e-materials, then, the associated assessments have to be fully based on e-tests, FT-Computer-Assisted Assessment (CAA) program. Design of such program is the main motivation of the described research. Matching of this program to FT characteristics, taking into account both specific structure of the learning content and students behavior is the main objective. After a short introduction to FT, the e-test organization in the flipped classroom is briefly discussed. Then, Electric Circuit Analysis course case study is presented: organization of Moodle-quizzes based assessment program, taking into account common students behavior, their good and bad habits, is shown, conclusions are drawn and some guidelines are given.

Introduction to Circuit Analysis and Design

Electric circuit has a very important role in electronics field progressing. From simple to complex form of circuits, actively support the establishment of new innovations in engineering technology. To build a good concept of circuit, it is necessary to have proper understanding on basic concept and circuit analysis. Starting from Ohm and Kirchhoff’s laws, another circuit laws and formulas are derived from analysis and theorems, to give better calculation and solution in problems. This paper will do an analysis on relationship between resistances in delta circuit, and apply basic electric circuit theory to calculate the total resistance. This analysis is conducted by doing comparison and calculation to derive the expected formula.

Agility and Assessment in the Age of COVID‐19: How Fast Can a Community College Dance?

Linear circuit analysis is a foundational course for electrical engineers. Instructors of linear circuit analysis courses have traditionally relied on print textbooks for student learning materials. With the rise of student use of computers and the internet, materials like lecture slides and online videos have also been used for learning materials. Increasingly, traditional textbooks (including online formats) are experiencing a decline, while interactive textbooks are growing in popularity. This paper describes auto-graded learning tools, called challenged activities, from various topics in an online linear circuit analysis textbook. Instructors often assign challenge activities as homework. Each challenge activity has 3-5 levels of increasingly difficult problems. Each level randomly generates a question from a large set of questions of similar difficulty. Students must correctly answer a question in a level to progress to the next level. This paper describes the student usage of 4 challenge activities in an online circuit analysis textbook. The average time spent per activity was under 10 minutes and the vast majority of students who started a level ended up completing that level, indicating little attrition. In fact, most levels had 0% of students give up and the highest was only 8%, which is remarkably low based compared to more traditional paper-and-pencil activities based on the teaching experience of the authors.

This book is concerned with circuit simulation using National Instruments Multisim. It focuses on the use and comprehension of the working techniques for electrical and electronic circuit simulation. The first chapters are devoted to basic circuit analysis. It starts by describing in detail how to perform a DC analysis using only resistors and independent and controlled sources. Then, it introduces capacitors and inductors to make a transient analysis. In the case of transient analysis, it is possible to have an initial condition either in the capacitor voltage or in the inductor current, or both. Fourier analysis is discussed in the context of transient analysis. Next, we make a treatment of AC analysis to simulate the frequency response of a circuit. Then, we introduce diodes, transistors, and circuits composed by them and perform DC, transient, and AC analyses. The book ends with simulation of digital circuits. A practical approach is followed through the chapters, using step-by-step examples to introduce new Multisim circuit elements, tools, analyses, and virtual instruments for measurement. The examples are clearly commented and illustrated. The different tools available on Multisim are used when appropriate so readers learn which analyses are available to them. This is part of the learning outcomes that should result after each set of end-of-chapter exercises is worked out. Table of Contents: Introduction to Circuit Simulation / Resistive Circuits / Time Domain Analysis -- Transient Analysis / Frequency Domain Analysis -- AC Analysis / Semiconductor Devices / Digital Circuits

This section contains instructions for undertaking a small dance experiment and then analysing the collected data using mixed and factorial analyses of variance (ANOVAs). The instructions are presented in a step-by-step format with a description of tasks at each step and accompanying examples. Some of the experiment materials are also given at the end (the IRI and IOS questionnaires). This Lab is intended as a practical demonstration of concepts introduced in Lesson 1, which precedes it.

The first Electric Circuits course is a core component of all engineering undergraduate curricula that include not only Electrical but other engineering disciplines such as Computer, Mechanical and Civil Engineering programs worldwide. The Electric Circuits Concept Inventory (ECCI) is a set of multiple choice questions that measures students' understanding of DC Circuit analysis. The topics include (i) fundamental conceptual circuit topics (ii) Circuit laws and (iii) Circuit analysis techniques. In a companion paper [1], we presented a rationale for ECCI. In this paper, we present a set of multiple-choice questions suggested for inclusion in the ECCI focusing on (ii) DC Circuit laws and (iii) DC Circuit analysis techniques. We examine the various concepts tested in each question and relate its importance to a quality overall course in Electric Circuits. We welcome more additions to this growing repertoire of questions that we plan to build and use in finalizing the ECCI test especially in AC Circuit analysis topics.

A fundamental mathematical field with many applications in science and engineering is linear algebra. This paper investigates the various applications of linear algebra in the fields of traffic flow analysis, electric circuits, cubic spline interpolation, and genetics. This research delves into individual applications while emphasizing cross-disciplinary insights, fostering innovative solutions through the convergence of genetics, cubic spline interpolation, circuits, and traffic flow analysis. The research employs specific methodologies in each application area to demonstrate the practical integration of linear algebra in genetics, cubic spline interpolation, electric circuits, and traffic flow analysis. In genetics, linear algebra techniques are utilized to represent genetic data using matrices, analyze genotype distributions across generations, and identify genotype-phenotype associations. For cubic spline interpolation, linear algebra is employed to construct smooth interpolating curves, involving the derivation of equations for spline functions and the determination of coefficients using boundary conditions and continuity requirements. In electric circuit analysis, linear algebra is crucial for modeling circuit elements, formulating systems of linear equations based on Kirchhoff's laws, and solving for voltage and current distributions in circuits. In traffic flow analysis, linear algebra techniques are used to represent traffic movement in networks, formulate systems of linear equations representing traffic flow dynamics, and solve for traffic flow solutions to optimize transportation networks. By addressing contemporary challenges, emerging research frontiers, and future trajectories at the intersection of linear algebra and diverse domains, this study underscores the profound impact of mathematical tools in advancing understanding and resolving complex real-world problems across multiple fields.

The reform of any course cannot be accomplished in one move and needs to be improved continuously for a long time. The scheme of blended learning reforms was shown from selecting online learning resources, dividing curriculum content, the problem of Blending learning hours and the implementation of discussion and cooperative learning in this paper. We also discussed some problems faced by Fundamentals of Circuit Analysis course in the Blending learning reform, and shared some of the accumulated experience and relevant suggestions. After 4 years’ blended learning reforms, the class based on Fundamentals of Circuit Analysis has effectively improved the dull state, and enhanced students’ interest in learning, which has also significantly improved the teaching effect. At the same time, this “student-centered” teaching design plays a great role in cultivating students’ innovation ability.