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The purpose of this paper is to explain the growing importance of design for assembly (DFA) and design for test (DFT) for compact medical electronics products.

The paper discusses compact products based on leading‐edge electronic components such as digital signal processors, radio frequency (RF) and mixed‐signal chips, advanced ball‐grid array, quad flat pack, chip scale package devices.

Advanced technologies like these create higher component and joint counts and increasing PCB densities. A higher probability of defects and faults is created, which lead to lower yields for a specific product line unless proper effective DFA and DFT are implemented.

The paper details DFA, high‐speed PCB design, mixed‐signal design, and DFT.

With increasing complexity in compact medical products, it is prudent to emphasize DFA and DFT for ultimate reliability during product development and production cycles.

The purpose of this paper is to monitor the backup indicators in case of indicator failure and to minimize the situations when the pilot may be unable to monitor the indicator effectively in emergency situations.

In this study, the pointer positions of different indicators were determined with a deep learning-based algorithm. Within the scope of the study, the pointer on the analog indicators obtained from aircraft cockpits was detected with the YOLOv4 object detector. Then, segmentation was made with the GrabCut algorithm to detect the pointer in the detected region more precisely. Finally, a line including the segmented pointer was found using the least-squares method, and the exact direction of the pointer was determined and the angle value of the pointer was obtained by using the inverse tangent function. In addition, to detect the pointer of the YOLOv4 object detection method and to test the designed method, a data set consisting of videos taken from aircraft cockpits was created and labeled.

The analog indicator pointers were detected with great accuracy by the YOLOv4 and YOLOv4-Tiny detectors. The experimental results show that the proposed method estimated the angle of the pointer with a high degree of accuracy. The developed method can reduce the workloads of both pilots and flight engineers. Similarly, the performance of pilots can be evaluated with this method.

The authors propose a novel real-time method which consists of detection, segmentation and line regression modules for mapping the angle of the pointers on analog indicators. A data set that includes analog indicators taken from aircraft cockpits was collected and labeled to train and test the proposed method.

This paper aims to propose a maker’s approach to teaching an operating systems (OSs) course in which students apply knowledge of OSs to making a toy robot by focusing on input/outputs, hardware devices and system programming.

Classroom action research is involved in this study.

After the course was taught in this maker’s approach in two consecutive school years, some observations were reported. Students were enthusiastic in doing a series of assignments leading to the completion of a toy robot that follows a black line on the ground. In addition to enjoying the learning process by making tangible products, the students were excited to be able to demonstrate the skills and knowledge they learned with the robots they made.

The research results were based mainly on the instructor’s observations during the lectures and labs.

Lessons from this study can inspire other instructors to turn traditional engineering courses into maker courses to attract students who enjoy making. Industry should welcome engineering graduates to join the companies with more hands-on experiences they have gained from maker courses.

Although the maker movement has attracted much attention in K12 education, there is little research that studies how this maker spirit can be incorporated in traditional engineering courses that focus mainly on theories or software.

Including electronics and mechanical components in programming assignments would bring surprising effects on students’ motivation in learning.

This study aims to present a mathematical method based on Poisson’s equation to calculate the voltage and volume charge density formed in the substrate under the floating gate area of a multiple-input floating-gate metal-oxide semiconductor metal-oxide semiconductor (MOS) transistor.

Based on this method, the authors calculate electric fields and electric potentials from the charges generated when voltages are applied to the control gates (CG). This technique allows us to consider cases when the floating gate has any trapped charge generated during the manufacturing process. Moreover, the authors introduce a mathematical function to describe the potential behavior through the substrate. From the resultant electric field, the authors compute the volume charge density at different depths.

The authors generate some three-dimensional graphics to show the volume charge density behavior, which allows us to predict regions in which the volume charge density tends to increase. This will be determined by the voltages on terminals, which reveal the relationship between CG and volume charge density and will allow us to analyze some superior-order phenomena.

The procedure presented here and based on coordinates has not been reported before, and it is an aid to generate a model of the device and to build simulation tools in an analog design environment.

Aero Systems of Miami, Florida, specialises in the sale of like‐new, FAA overhauled certified aircraft rotable equipment at a fraction of the cost and lead time required by the factory. Aero Systems will be exhibiting for the first time in Britain and are seeking an agent for the UK and Europe.

In this work, a true random number generator is designed by sampling the double-scroll analog continuous-time chaotic circuit signals.

A Chua circuit based on memristance simulator is designed to obtain a non-linear term for a chaotic dynamic system. It is implemented on the board by using commercially available integrated circuits and passive elements. A low precision ADC which is commonly found in the market is used to sample the chaotic signals. The mathematical analysis of the chaotic circuit is verified by experimental results.

It is aimed to be one of the pioneering studies (including low precision ADC) in the literature on the implementation of memristive chaotic random number generators.

Two new methods are proposed for post-processing and creating random bit array using XOR operator and J-K flip flop. The bit stream obtained by a full-hardware implementation successfully passed the NIST-800-22 test. In this respect, the availability of the memristance simulator circuit, memristive chaotic double-scroll attractor, proposed random bit algorithm and the randomness of the memristive analog continuous-time chaotic true number generator were also verified.

Recently, manufacturing companies have been evaluating measurement equipment used for in‐process inspection. The precision and accuracy of the measurement operation are a major factor of an overall quality control programme. Compares two measurement systems of scales and callipers in three laboratory settings for the purpose of identifying sources of significant differences in measurements. The experimental design used was a nested and crossed design with blocking on manufactured parts. Operators and types of equipment (digital and analogue) were nested within laboratories and crossed with one another. Finds, at a significance level of 0.001, that variation exists among laboratories and between types of scales, while, for callipers, significant variation occurred among laboratories, between types of callipers and between operators.

In this paper, a nine-dimensional chaotic system is designed and applied to secure communication.

Firstly, the equilibrium characteristics, dissipativity, bifurcation diagram and Lyapunov exponent spectrum are used to analyze the relevant characteristics of the proposed nine-dimensional chaotic system. In the analysis of Lyapunov exponential spectrum, when changing the linear parameters, the system shows two states, hyperchaos and chaos. For secure communication, there is a large secret key space. Secondly, C0 complexity and SEcomplexity of the system are analyzed, which shows that the system has sequences closer to random sequences.

The proposed nine-dimensional system has a large key space and more complex dynamic characteristics

The results show that the proposed nine-dimensional hyperchaotic system has excellent encryption capabilities and can play an important role in the field of secure communication.

Thinkers are still debating about the concept of information while engineers prepare astonishing digital appliances. The purpose of this paper is to address the following questions: what concepts do experts adopt in the working environment? What information do they measure? What can be done to help them?

This paper offers a concise report of the researches driven on the problem of the information definition. The report consists of three principal sections. The first section is twofold. On one hand, there are comments on the various information theories; on the other hand, the semiotics concepts (that engineers and professionals use in intuitive manner) are illustrated.

In consequence of the popularity of the semiotic notions – in the second section – the authors define the concept of signifier using the mathematical language, and discuss some features of this mathematical definition.

The third section closes the paper with the illustration of some advantages that the mathematical definition of the signifier offers on the practical plane and from the philosophical perspective.

The ensemble of those advantages provides a bridge between the humanist culture and digital engineering.

The theoretical studies on the concept of information seem to be at a standstill. This paper shows how the measurement of the items of information is handy; and various equations can be unified into a comprehensive frame that facilitates the collaboration of experts coming from different areas.

Outlines the history and functions of BEMS – Building energy and management systems and is intended as a briefing note to those not directly involved with the application of building controls, but who work with those who are. It details the technical aspects of the system, and discusses both schemes for future development and the system′s relevance to structural engineers.