Electronic Workshop Research Articles

Opportunities and Skills needed for Effective Enterprising in Industrial and Consumer Electronics

The rate of unemployment in Nigeria calls for a drastic and effective approach and solution. The study sought to identify the opportunities and skills needed for effective entrepreneurship in industrial and consumer electronics. Two research questions and two hypotheses were formulated. A descriptive survey research design was adopted for the study. The study's sole instrument was a questionnaire. The population of the study was made up of 100: 28 electrical and electronic lecturers in tertiary institutions in Niger State, 8 electrical and electronic workshop personnel, and 64 electronics technicians in Niger State. All the lecturers and workshop personnel were used while propulsive sampling techniques were used to select the 64 electronics technicians in Niger State. Mean and standard deviation were used to answer the research questions, while ANOVA was used to analyze the hypotheses to determine whether they were significant at the (P .05) level. The findings that emerged, among others, are that there are a lot of entrepreneurship opportunities available in industrial and consumer electronics, and there are a lot of skills needed by industrial and consumer electronics entrepreneurs. There are no significant differences between the mean responses of lecturers, workshop personnel, and electronics technicians on the entrepreneurship opportunities in industrial and consumer electronics in Niger State. The following recommendations were made, among others: There should be more awareness of the entrepreneurial opportunities in industrial and consumer electronics, and there should be training and retraining for those who wish to be involved in electronics entrepreneurship.

Assessment of occupational health risk due to inhalation of chemical compounds in an aircraft maintenance, repair, and overhaul company

This study was conducted in an aircraft maintenance, repair, and overhaul (MRO) company in 2021 to identify the extent of occupational exposures and quantitative assessment of the health risk due to inhalation of chemical compounds. According to the inspection of different parts of this company, heavy metals including Co, Cd, Ni, Pb, Cr(VI), and Mn and organic compounds including benzene, toluene, ethylbenzene, xylene (BTEX), and methyl ethyl ketone (MEK) were selected for health risk assessment. In total, the air in the inhalation area of active workers was sampled in 51 workstations. Measurement of the above pollutants showed that the average occupational exposure to Cd, Pb, and all organic compounds fell within the acceptable range of occupational exposure standard, while the measured values for Co, Ni, Mn, and Cr(VI) exceeded the standard limit. According to calculations, the highest carcinogenic risk (CR) was seen in the plating (airplane) workshop for exposure to Cr(VI) (7.58E-01), and the lowest CR was observed in the electronic workshop for exposure to Pb (7.75E-08). The highest non-carcinogenic hazard (HQ) was found in the welding workshop for exposure to Co (1.00E + 04), while the lowest HQ was related to toluene in the fabrication workshop (9.10E-03). Considering the high rate of exposure indicators, CR and HQ exceeded the standards set by the American Environmental Protection Agency (EPA) in most workshops. Accordingly, company managers should take the necessary measures to reduce the vulnerability of individuals working in areas with unacceptable CR and HQ.

Smart Finder Using IoT System

Practical learning in Electronics requires handling and managing many electronic components, tools, and equipment. A study has been done to improve the time-consuming process to locate these parts in an electronic workshop. As a result, Smart Finder was designed to replace the manual search method. This product utilizes the Internet of Things (IoT) as a link between a smartphone and NodeMCU microcontroller. Connectivity between the phone and microcontroller enables users to locate electronic parts from anywhere within the communication coverage. Smart Finder Application on the smartphone is built with MIT App Inventor. After the required login process , users need to select the component/part on the menu in the application. Once the component/part is selected, LED which acts as indicator on the selected component/part storage turns on. These few steps would simplify and expediate the searching process. Based on the result of the questionnaires, more than 95% of respondents agreed that Smart Finder helps in saving time in preparing parts for practical classes. Further improvements on the project would be adding better security measures, application for IOS users, and more useful interfaces or features to improve workshop management in Electronic Program.

Micro-vibration response analysis and its application of electronic workshop raw land based on whale optimization algorithm

Micro-vibration response analysis and its application of electronic workshop raw land based on whale optimization algorithm

Modular instrumentation for capillary electrophoresis with laser induced fluorescence detection using plug-and-play microfluidic, electrophoretic and optic modules

This study reports on the development of a novel instrument for capillary electrophoresis (CE) coupled with laser induced fluorescence (LIF) detection that is inspired by the Lego-toy concept. The Lego CE-LIF design is an evolution of purpose-made CE instrumentation, allowing the users to construct their own analytical device with a high degree of standardization (i.e. a “standard” setup) without requirement of mechanical and electronic workshop facilities. To allow instrument reproduction outside the original fabrication laboratory, which is not trivial for in-house-built CE systems, the new design is based on unprecedent ‘plugging’ hyphenation of various off-the-shelf parts available for microfluidics, optics and electrophoresis. To render the operation with Lego CE-LIF optimal, we developed a new background electrolyte (BGE), using for the first time extremely high concentrations of zwitterionic and large weakly charged species for much improvement of detection sensitivity. The Lego CE-LIF was demonstrated for separation and detection of oligosaccharides labelled with 8-aminopyrene-1,3,6-trisulfonic acid (APTS). The new gel-free BGE for oligosaccharide analysis also allowed simplification of the conventional CE-LIF protocol used with commercial instruments while keeping satisfactory separation performances. Furthermore, the new BGE is fully compatible with a non-thermostatted Lego CE instrument thanks to low current and therefore low heat generation under application of a high voltage.

A Method for the Automatic Selection of Training Tasks in Learning Environment for IT Students

Purpose of research. The research, the results of which are presented in this article, was carried out in order to activate and improve the efficiency of independent work of students in the information environment of learning by rational individual selection of training tasks. In the process of the research, a method for automatically selecting tasks for self-completion was developed and implemented in the educational process, based on predicting the difficulty and learning effect of the task for a specific student, taking into account the complexity of the task and the student’s readiness to perform this task. Methods and materials. The article provides a distinction between the concepts of complexity, difficulty, and the learning effect of training tasks. On this basis, the task of predicting the level of difficulty of the task for the student is set as a task of automatic classification of “student-task" pairs, which represent a set of characteristics of the student and the task that are available in the database of the e-learning system. The result of the classification is a forecast of the level of difficulty of the task for the student, on the basis of which a decision is made about the learning effect of this task.The classification problem is one of the well-developed machine learning tasks “with a lecturer". Decision trees were selected from several well-known trained classification models for implementation, since they, unlike neural networks, represent prediction rules in a visual form, while highlighting significant features. The learning phase of the model consists of building a decision tree based on a training sample containing data on precedents for students to complete tasks. As a result of the computational experiment, decision trees were built for several disciplines that practice automatic verification of students’ decisions, i.e. there is data for forming a training sample.Results. The article provides an example of a decision tree based on a training sample, which is formed on the basis of data from an electronic workshop on the discipline “Foreign language ". The quality of the predictive model was determined on the exam sample by the criteria of accuracy and generalizing ability (the degree of severity of the “retraining effect”). The obtained values of these indicators allow us to recognize the quality as acceptable. The first results ofpractical application of the proposed method of selecting tasks in the educational process are analyzed. The software developed in the process of the research can be considered as the basis of a recommendation system that can not replace live communication between the student and the lecturer, but is their smart assistant in the learning process. Conclusion. In general, the results of the research show that the capabilities of artificial intelligence technologies, in particular, machine learning, allow us to put into practice the principle of individualized learning, to adapt the learning process to the individual characteristics of each student in order to effectively develop their professional competencies. The proposed method is implemented and tested in the information environment of training students of IT areas of Vologda State University, however, this approach is quite universal, and it can be extended to other subject areas and forms of training.

Research and Application of Key Technology of Data-Driven Intelligent Manufacturing of Electronic Components

With the development of electronic equipment towards multi-function, high performance and miniaturization, the assembly density and complexity of electronic components become higher and higher. For the manufacturing characteristics of electronic components in many varieties, small batch and mixed production line, this paper uses intelligent manufacturing technology based on industrial big data, puts forward implementation architecture of electronic components digital workshop, explores the “perception - analysis - decisions” closed-loop mechanism of all data of manufacturing process of electronic component, sets up network security platform for industrial control system which ensures workshop operate transparently and safely. The necessity and feasibility of landing of data-driven intelligent workshop are verified by an application example of digital workshop of radar core microwave components, which effectively improves the production efficiency and workshop management level.

Challenges Facing Emerging Megawatt Applications: New Technology and Solutions Needed for High-Power Applications

Standards exist for voltage levels, but there are no industry or IEEE standards to define power levels. Typical perceptions of high power can range from hundreds of watts to hundreds of megawatts. At this year's IEEE Future of Electronic Power Processing and Conversion workshop, the high-power session focused primarily on megawatt applications.

Characterization of metals in indoor dusts from electronic workshops, cybercafés and offices in southern Nigeria: Implications for on-site human exposure

The levels of Cd, Pb, Cr, Ni, Cu, Co, Ba, Mn, Zn, Al and Fe were evaluated in indoor dusts from electronic workshops, cybercafés and offices in southern Nigeria. The study was aimed at providing information on the distribution patterns, and the associated risks that may arise from exposure of humans to these metals in indoor dusts from the three work environments. The dust samples were digested with aqua-regia and analyzed for the metal concentrations by inductively coupled plasma-atomic emission spectrometry (ICP-AES). The metal concentrations (mg kg−1) in the indoor dusts from these work environments ranged from 0.2 to 20.5 Cd, 0.6–4810 Pb, 8.65–2210 Cr, 1.85–209 Ni, 6.75–2820 Cu, 0.25–19.6 Co, 22.7–597 Mn, 6.65–140 Ba, 43.3–7310 Zn, 1040–16,800 Al and 969–78,300 Fe. The metal distribution patterns in these dust samples followed the order: electronic workshops > cybercafés > offices. The concentrations of Cd, Pb and Cu in significant proportions of the dust samples from the electronic workshops and cybercafés surpassed their respective permissible limits in soils. The health risk assessment suggests considerable non-cancer risks arising from childhood contact with Pb in dust from the electronic workshops while no considerable non-cancer risk is associated with the adult and child exposure to dust from the cybercafés and offices. The results indicated that Cr and Pb are the main elements responsible for the non-carcinogenic risk arising from childhood exposure to electronic workshop dusts. The carcinogenic risk due to exposure of humans to metals in these dust samples were within the range regarded as safe by the USEPA.

ENHANCING WORKSHOP ORGANIZATIONAL TECHNIQUE ADOPTED BY ELECTRONIC TECHNICIANS IN THE INFORMAL SECTOR

Electronics technicians have are not utilizing the workshop organizational techniques effectively for operating their workshop activities in the informal sector. This has created source of worries whereby this ineffectiveness have created lots of confusion, and inability to carry out repairs on electronic appliances, which made electronic workshops to become house of junks for unrepaired equipment. The instrument made up of 75 items structured questionnaire was used to collect data from 312 electronics technicians in Imo State was based on four research questions and four null hypotheses formulated to guide to study. Mean and standard deviation were used to answer the research questions while t-test statistics was employed to test the hypotheses at 0.05 level of significance. The findings of the study revealed that, the techniques in the electronic workshop organization which include: personnel control, safety measures, storage systems and inventory control systems were not practiced by most of the electronic technicians in the organization of electronic workshops. It was recommended among other things that appropriate practice of safety measures, constant use of safety goggle and magnifying glass be adopted to ensure protection of the eyes. Electronic technicians should organize seminars and workshops so as to constantly update their workshop organizational techniques. Article visualizations:

A simple photoacoustic detector for highly corrosive gases.

In this work, we present a new design of a cantilever-type photoacoustic (PA) detector with high chemical resistance to be used for a broad range of gaseous samples including highly corrosive gasses. A thin mica cantilever used to sense the PA pressure is the only part that comes into direct contact with the sample gas as its deflection is sensed by a probe laser from outside of the gas cell. The design of the detector is simple, compact, and affordable. It can be constructed without any special fabrication procedure in laboratories equipped with a standard mechanical and electronic workshop. The detector has been tested and its performance evaluated in combination with commercially available pulsed IR tunable optical parametric oscillator and amplifier delivering 2-10 mJ of energy per pulse sampling highly corrosive HCl and HBr gasses. The ro-vibration PA spectrum of the first overtone (ν = 0 → ν = 2) of HCl molecules in the range from 5315 to 5855 cm-1 is presented.

Chips: How to build and implement fluidic devices in flow based systems

The development of automatic analyzers based on flow techniques involves the use and continuous innovation of fluidic devices. New trends tend toward miniaturization of sophisticated fluidic platforms requiring continuous advances in this field. The availability of a mechanic and electronic workshop together with the know-how to build new fluidic devices provides the tools for the creation of innovative instrumentation and stimulates the creativity of analytical chemists. Thus, in this review we present how to build and use flow-based fluidic devices, together with the tools required, such as computerized controlled lathes, milling machines, laser engraver machines, low-temperature co-fired ceramics technology and 3D printers, highlighting their strong and weak points. In addition, some flow based methods exploiting innovative fluidic platforms are also presented as a way of example of the possible devices these tools can provide and their potential applications.

Simple semi-automated portable capillary electrophoresis instrument with contactless conductivity detection for the determination of β-agonists in pharmaceutical and pig-feed samples

An inexpensive, robust and easy to use portable capillary electrophoresis instrument with miniaturized high-voltage capacitively coupled contactless conductivity detection was developed. The system utilizes pneumatic operation to manipulate the solutions for all flushing steps. The different operations, i.e. capillary flushing, interface rinsing, and electrophoretic separation, are easily activated by turning an electronic switch. To allow the analysis of samples with limited available volume, and to render the construction less complicated compared to a computer-controlled counterpart, sample injection is carried out hydrodynamically directly from the sample vial into the capillary by manual syphoning. The system is a well performing solution where the financial means for the highly expensive commercial instruments are not available and where the in-house construction of a sophisticated automated instrument is not possible due to limited mechanical and electronic workshop facilities and software programming expertise. For demonstration, the system was employed successfully for the determination of some β-agonists, namely salbutamol, metoprolol and ractopamine down to 0.7ppm in pharmaceutical and pig-feed sample matrices in Vietnam.

HUBUNGAN ANTARA MINAT DENGAN KEAKTIFAN BELAJAR WARGA BELAJAR PELATIHAN KETERAMPILAN ELEKTRONIKA PADA PSAABR BUDI UTAMA LUBUK ALUNG KABUPATEN PADANG PARIAMAN

This research is conducted based on the decrease of students' participation in learning elektronic workshop. Passion is one of factors that influences the students to participate in workshop. This research is aimed to describe the passion of students to participate in workshop. This research was correlational research. Research subject was 20 students that followed the electronic workshop in PSAABR Budi Utama Lubuk Alung Kabupaten Padang Pariaman. The result showed that there was a significant relationship between students' passion and activeness to participate in electronic workshop. It is suggented that the students should follow the activities based on their passion. The Instructor should attempt to omprove the students’ interest. The organizer should facilitate the appropriate workshop based on the students’ needs, interests, and talents.

Design and Research of Electronics Factory Evacuation Based on Computer Simulation Technology

Along with the development of economy, a growing of large electronics workshop projects and the increasing of workshop area, the difficulties of evacuation design in engineering design is increasingly protruding. Due to large cubic construction and the complexity of building function, the evacuation problems in fire protection design is difficult to solve when using existing national specifications. By using the method of performance-based fire protection design in electronic workshop personnel evacuation design, and using computer simulation technology to demonstrate its security, we can find the solution to similar engineering problems.

Design and Research of Electronics Factory Evacuation Based on Computer Simulation Technology

Along with the development of economy, a growing of large electronics workshop projects and the increasing of workshop area, the difficulties of evacuation design in engineering design is increasingly protruding. Due to large cubic construction and the complexity of building function, the evacuation problems in fire protection design is difficult to solve when using existing national specifications. By using the method of performance-based fire protection design in electronic workshop personnel evacuation design, and using computer simulation technology to demonstrate its security, we can find the solution to similar engineering problems.

Type Theory Should Eat Itself

In this paper I present a partial formalisation of a normaliser for type theory in Agda [Ulf Norell. Agda 2, 2007. http://www.cs.chalmers.se/~ulfn/]; extending previous work on big-step normalisation [Thorsten Altenkirch and James Chapman. Big-Step Normalisation. Journal of Functional Programming, 2008. Special Issue on Mathematically Structured Functional Programming. To appear, Thorsten Altenkirch and James Chapman. Tait in one big step. In Workshop on Mathematically Structured Functional Programming, MSFP 2006, Kuressaare, Estonia, July 2, 2006, electronic Workshop in Computing (eWiC), Kuressaare, Estonia, 2006. The British Computer Society (BCS)]. The normaliser in written as an environment machine. Only the computational behaviour of the normaliser is presented omitting details of termination.

The People’s Library and the Electronic Workshop: Comparing Swedish and British Social Democracy

This article explores the role of ideological heritages—ideologies past—in the political discourse of the Third Way and points to the divergence between social democratic parties in their interpretation of change. The cases are New Labour and the Swedish SAP, cases that display important differences in interpretations of the knowledge economy and its implications for social change. The people’s library and the electronic workshop, as the metaphors the parties use to describe the knowledge economy, contain different future visions, and echo politics of the past. The people’s library plays on the historical Swedish notion of a people’s home, whereas the electronic workshop draws on a British past of industrial progress and capitalist entrepreneurship, values that have been placed at the heart of New Labour debates on welfare state change. These metaphors serve as the point of departure for the discussion.

Awarensss and utilization of information technology among agricultural scientists in Nigeria

The paper examines the awareness and utilization of Information Technologies among Agricultural scientists in Nigeria. Data were collected from 170 respondents with the aid of structured questionnaire and analysed using frequency, percentage, mean and Ordinary Least Square multiple regression. This study found that awareness of Information Technology was high in electronic mail (e-mail), browsing the web, chat room, and electronic workshop (e-workshop). However, utilization of Information Technologies was high in electronic mail (e-mail) and browsing and low in electronic workshop and chat room. Findings of the study revealed that experience, frequency of visit to cybercafe, gender, institution, marital status, academic qualification significantly influenced awareness of Information Technology. On the other hand, duration of using Information Technologies, marital status, training were significant factors that influenced utilization of Information Technologies. The Information Technologist Vol. 2(2) 2005: 1-8

Teaching Electronic Journals: Finding, Using, and Citing Them

SUMMARY Today's library users are Web savvy but not always Web educated. As more and more of a library's print journal collection becomes part of the library's electronic collection, we must take on the roles of guiding and teaching students how to navigate and learn from their interactions with electronic journals. The Teaching Electronic Journals workshop discussed the opportunities we have to educate our users about electronic journals and how to use and cite them effectively.