Tạp chí của Trường Đại học Công nghiệp Quảng Ninh
The impact of digital technology on learning behaviors and learning emotions of university students in the current context
This paper investigates the impact of digital technology on university students’ learning behaviors and learning-related emotions in the context of digital transformation. The study employs a systematic literature review combined with an analysis of higher education practices in Vietnam to clarify key theoretical perspectives and examine the dual effects of digital technology on the learning process. The findings reveal that digital technology can enhance students’ active learning behaviors, promote self-regulation, and foster positive emotions such as interest and motivation. However, inappropriate or unguided use may lead to negative outcomes, including distraction, reduced concentration, and adverse emotional states such as anxiety and stress. The study also highlights the interactive relationship between learning behaviors and emotions within digital learning environments. Based on these findings, several pedagogical implications are proposed for students, lecturers, higher education institutions, and policymakers to improve the effective integration of digital technology in Vietnamese higher education.
Developing a model of factors affecting the learning interest of students at Quang Ninh University of Industry
The quality and effectiveness of the educational process are significantly influenced by students’ learning interest. Enhancing learning interest is therefore essential to improving overall training quality and effectiveness. This study aima to identify the factors affecting the learning interest of students at Quang Ninh University of Industry and to examine the extent of influence of each factor. A five-point Likert scale was used to design the survey questionnaire. After removing invalid responses, the collected data were analyzed using Cronbach’s Alpha reliability test, EFA, correlation analysis, and regression analysis with the support of SPSS 27 software. The results show that students’ learning interest at Quang Ninh University of Industry is influenced by four main factors: learning environment, teaching methods, facilities, and students’ awareness. Among these factors, the learning environment has the strongest impact on students’ learning interest at Quang Ninh University of Industry in the current context. The regression model is statistically significant with a significance level of less than 0.1 and explains 75.6% of the variance in students’ learning interest.
Modeling and simulation of electronic throttle body control performance
Electronic Throttle Control (ETC) is a crucial control system in modern automobiles, replacing traditional mechanical linkages with electronic signals. Researching the modeling and simulation of ETC control performance is vital for designing, optimizing, and enhancing the reliability of engine management systems. This paper presents the theoretical foundations, mathematical modeling methods, and modeling of key components within the electronic throttle body, as well as the procedures for simulating and evaluating the system's control characteristics. The simulation results demonstrate that the model accurately reflects the real-world behavior of the throttle, providing a foundation for developing and verifying advanced control algorithms.
ESP32 application for remote control of lawn mowers in diverse terrain conditions
In the context of increasing automation and IoT applications, designing intelligent mechatronic devices for production and daily life is an inevitable trend. This paper presents the research, design, and fabrication process of a remote control for a lawn mower using the ESP32 microcontroller as the central controller. The system allows wireless control, monitoring of the machine's operating status, and ensures stable operation under diverse terrain conditions such as flat surfaces, slopes, and rough terrain. Experimental results show that the system operates reliably, with low latency and good adaptability to real-world working conditions.
Application of numerical simulation to analyze the force acting on the arc in a vacuum contact
Currently, vacuum contacts are installed inside contactors and widely used in underground mines with explosive dust and gases. To ensure safety against electric shock and prevent mine explosions, switching mechanisms are often placed in vacuum arc extinguishing chambers to avoid arcing during power switching. Vacuum circuit breakers are designed to interrupt the flow of electricity when a large current occurs due to a short circuit or other abnormal operating conditions in the electrical network. When a vacuum circuit breaker interrupts the current, metal vapor is released from the contacts and turns into plasma, creating an arc. Arc contraction can increase heat flux and local temperature across the electrodes, leading to surface melting and undesirable effects on equipment lifespan. To overcome this, an axial magnetic field is applied to evenly diffuse the arc across the contact surface, reducing heat density and limiting weld sticking. This paper applies JMAG software to simulate the electromagnetic force acting on a column arc and the current density in the arc extinguishing chamber. The vacuum arc is modeled using a sequential coupling method of two different fields.
Determination of reverse flotation conditions using H3PO4 for the separation of apatite and dolomite in type II apatite ore – Lao Cai
In the flotation processing of Type II apatite ore in the Lao Cai region, the complete separation of carbonate gangue minerals (such as dolomite and calcite) remains a major challenge due to their fine intergrowth and surface properties similar to those of apatite. This study focuses on replacing conventional collectors with a new selective collector, VH10, in combination with phosphoric acid (H₃PO₄) as a depressant, in order to optimize the enrichment of P₂O₅. Based on flotation experiments conducted on low-grade run-of-mine ore samples, the paper systematically analyzes the influence of operating parameters on key technological indicators. The experimental results establish an optimal reagent regime, significantly improving recovery efficiency and concentrate quality compared with conventional flotation schemes.
Assessment of changes in longwall mining technology in underground coal mines in Quang Ninh region during the period 2010 - 2025
This paper presents an assessment of the evolution of longwall mining technology in underground coal mines in the Quang Ninh region during the period 2010 - 2025, in the context of the transition from open-pit to underground mining to ensure national energy security. The study analyzes technological development through three main stages: (i) 2010 - 2015, characterized by manual and semi-mechanized mining methods; (ii) 2016 - 2020, marked by breakthroughs in fully mechanized mining; and (iii) 2021 - 2025, featuring trends toward automation, digitalization, and the application of artificial intelligence. The results indicate that the mechanization rate increased from 2.8% to approximately 18,5%, labor productivity improved by over 12% annually, and resource loss was reduced to below 20%. Advanced technologies such as powered supports, shearers, lightweight mechanized systems, and ZRY flexible shields have significantly enhanced mining efficiency under complex geological conditions. In addition, the application of intelligent monitoring systems, sensors, and AI has substantially improved occupational safety and operational management. The paper also identifies key challenges associated with deep mining, including ground pressure, methane hazards, and high investment costs, and proposes appropriate technological orientations toward smart, modern, and sustainable mining systems in the future.
Development of a lithological model for Ta Thiet limestone deposit using geostatistics technique and machine learning
The establishment of a 3D lithological model is a challenging task in Ta Thiet quarry limestone due to the sparseness of the exploration drilling pattern along with the imbalance of drill log data. This study proposes a hybrid Random Forest (RF) which is the combination of standard RF and geostatistical Indicator Kriging (IK). Using the spatial probability generated by IK, the RF model captures the geological context. The result shows that the hybrid RF achieved an overall accuracy of 93.0%, which outperformed the standard RF (80,0%) and IK (61,0%) and improved its ability in detecting minor rock types. The hybrid RF model also generates a high solution of lithological boundaries. This is potentially a reliable tool for selective mining and blending of cement raw mmaterials.
Method of accumulating basic models in solving mathematical problems
This paper presents the teaching method "Accumulating Basic Mathematical Models" (MHCB), a strategy to support students in solving problems based on cognitive science principles. The paper utilizes theoretical research methods (analysis, synthesis, systematization) and illustrative case studies to clarify the effectiveness of the method of accumulating basic mathematical models in mathematics teaching. The method simplifies complex thinking processes, facilitating quick and efficient learning, and fosters structured mathematical thinking, aligning with the competency-based development orientation of the 2018 General Education Curriculum. This opens up new avenues for reforming mathematics teaching methods, particularly in secondary education.
The role of ideological work in helping students identify and counter harmful information
In the context of the rapid digital transformation and information explosion, Vietnamese students are increasingly exposed to multiple information sources, including harmful and hostile content. This paper analyzes the role of ideological work in orienting students’ perceptions, enhancing their critical thinking, and strengthening their resilience against malicious information. Based on the theoretical foundation of the Party’s ideological work, the article proposes several solutions to improve its effectiveness in higher education institutions today.
Solutions to enhance the role and responsibilities of academic advisors in the management of educational activities for k18 students at Quang Ninh University of Industry
This paper focuses on analyzing the current status of academic advising activities for K18 students at Quang Ninh University of Industry, thereby identifying limitations in coordination, management, and support for students’ learning and personal development. Based on survey data and evaluation results, the study proposes a set of solutions to enhance the role and responsibilities of academic advisors, including innovating advising processes, improving professional capacity, applying information technology, and improving coordination mechanisms among relevant units.
Restructuring practice rooms to improve the efficiency of facility utilization for training purposes
The paper focuses on assessing the current state of the system of practice and laboratory rooms at the Quang Ninh University of Industry and proposes restructuring solutions to improve the efficiency of facility utilization for training purposes. The survey results show that the university has 44 practice and laboratory rooms, but only about 65% are used regularly; many pieces of equipment are outdated, damaged, or underutilized. Based on this, the paper proposes a restructuring plan to reorganize, merge, and repurpose the rooms, reducing the total number to 28. At the same time, it aims to establish shared, centralized, and modern practice rooms. This restructuring not only helps optimize resources, save costs, and facilitate management but also enhances training quality and students’ practical skills, meeting the requirements of educational innovation and the trend of university autonomy.
Application of Matlab/simulink to model and simulate dynamics of electric cars
The article presents the method of calculating, modeling, simulating the dynamics and dynamics of electric cars by applying Matlab-Simulink software. The results of the simulation help students and technicians working on cars have a more general view, more accurately assess the level of influence of kinematic and dynamic quantities on cars on the economic and technical indicators of the car, thereby recognizing clear and specific technical responsibilities in practical work related to the car sector. This is also the basis for supporting teaching, learning and scientific research of staff and students in specialized automotive engineering technology.
Design and evaluation of a pid temperature control system on the PCT-M4 model
PID (Proportional-Integral-Derivative) controllers are the gold standard in industrial control, accounting for over 90% of applications due to their simple structure and ease of adjustment, thus widely used in temperature control systems. Based on this, this paper presents the design and evaluation of a PID temperature control system on a PCT-M4 experimental model for training and research in automatic control. Comparative experiments between P, PI, PD, and PID modes were conducted under the same operating conditions. The results show that the optimal PID controller combined with an anti-windup mechanism achieved superior performance with short settling time, small overshoot, and near-zero steady-state error. Quantitative evaluation using IAE, ISE, and ITAE indices confirms that the optimal PID configuration provides high control quality and good noise immunity, suitable for the large inertial characteristics of the PCT-M4 temperature system. This research contributes to the development of a standardized set of experiments, improving the effectiveness of teaching practical temperature control in electrical and automation engineering training at Quang Ninh University of Industry.
Design and optimization of a fuzzy-pid controller using a genetic algorithm for overhead crane control
An overhead crane (OC) is an electromechanical system with nonlinear dynamics and is significantly affected by load oscillations (LO), which are commonly modeled as a double-pendulum (D-P) system. Oscillations (O) of the hook and payload (H&P) degrade trolley (T) positioning (P) accuracy and may lead to mechanical damage and safety hazards. To mitigate these limitations, a combined FLC–PID control scheme is introduced with the aim of improving the operational performance of an OC. In the proposed scheme, the fuzzy controller enhances the system’s dynamic response under large tracking errors, thereby ensuring fast positioning of the T at the desired location. The PID controller ensures system stability as the T approaches the setpoint, employing a genetic algorithm (GA) to optimize parameters for oscillation suppression and P accuracy enhancement. The effectiveness of the proposed approach is validated through MATLAB/Simulink simulations. Simulation results demonstrate improved P accuracy, significant reduction of H&P O, and fast, stable system responses.
Proposed reinforcement solutions to enhance the stability and bearing capacity of subsidence-affected roadways in the nam Khe Tam coal mine
The Nam Khe Tam coal mine is operated, protected, explored, and exploited under the authority of the Dong Bac Corporation. Based on the estimated recoverable raw coal reserves of 5 million tonnes and the designed annual production capacity, the mine’s operational lifespan including the period of basic construction has been determined to be 14 years. During the basic construction phase, several challenges arise due to excavation activities passing through zones of unfavorable geological conditions. This study investigates the current state of deformation, subsidence, and the degradation of roadway support capacity in the Nam Khe Tam coal mine, where complex geological structures and significant mine pressure effects are prevalent. Through the analysis of monitoring data and on-site inspections, the authors identify the predominant mechanisms responsible for roadway compression and instability. Correspondingly, the paper develops methodological approaches for assessing geological characteristics and evaluating the existing excavation and support practices employed in the mine. Based on these analyses, the study proposes several reinforcement solutions aimed at improving roadway stability under the specific geological and mining conditions of the area. These include optimizing the support structures, applying support technologies compatible with the company’s existing systems, enhancing mine pressure control, and improving post-excavation reinforcement procedures.
Research on directional cast blasting: theoretical basis and construction practice
This paper presents the theoretical basis and practical application of directional cast blasting in hydraulic and transport infrastructure construction within complex terrains. Based on the hydrodynamic theory of explosion and Pokrovsky's empirical formulas, the study analyzes key technical parameters such as the blasting action index (n), burden (W), and explosive charge calculations. Specifically, the research delves into non-electric differential blasting techniques to control peak particle velocity (PPV) and rock throw direction. Practical application results at the Cua Dat Reservoir (Thanh Hoa) demonstrate that this method ensures absolute safety for adjacent structures while optimizing costs and accelerating construction progress on high-hardness bedrock (f=10-14).
Research on proposing measures to reduce losses in underground coal mining in the Uong Bi region
The optimization of solid mineral extraction processes, particularly underground coal resources, plays a vital role in Vietnam’s energy security strategy and sustainable development. In the Uong Bi area of Quang Ninh Province, the current situation of resource loss in underground mining remains a major challenge, with loss rates fluctuating between 28% and 31%. This loss not only results in the waste of mineral resources finite national assets but also reduces the efficiency of capital investment utilization, shortens mine life, increases mining costs in later stages, and simultaneously leads to negative social impacts such as reduced employment effectiveness, imbalanced development in mining regions, and the emergence of serious environmental consequences.This report focuses on analyzing the core groups of factors causing coal losses, including complex geological conditions such as steeply inclined, thin seams and faulting; limitations in the level of technology and equipment applied in the area; shortcomings in production organization models and human resource management; as well as technical safety constraints stipulated by national standards. By inheriting and further developing modern technical solutions such as synchronized mechanization, the application of improved ZRY flexible shield technology without leaving protective pillars, and the Lean Mining management model, the study proposes a comprehensive system of measures. The fundamental objective is to reduce the loss rate to below 25% in accordance with the orientation of the Vietnam National Coal and Mineral Industries Group (TKV), thereby contributing to improved economic efficiency and enhanced protection of the mining environment.
Assessment of roadway stability supported by a bolt–mesh–shotcrete system at the Mao Khe vertical shaft project
As underground coal mining extends to greater depths, increasing ground pressure poses significant challenges to roadway stability, necessitating the adoption of effective support solutions. The combined support system consisting of rock bolts, steel mesh and shotcrete (B–M–S) has gradually been studied and applied in several underground coal mines in Vietnam; however, systematic evaluation of roadway stability supported by this system remains limited. This paper presents an assessment of roadway stability supported by the B–M–S system at the Mao Khe vertical shaft project using a combination of numerical simulation and in-situ displacement monitoring. A numerical model was developed with FLAC3D to analyze and compare boundary displacements between the steel arch support scheme and the B–M–S support scheme. In addition, field measurements of roadway boundary displacements were carried out over a 90-day monitoring period using surveying instruments. The results show that the B–M–S support system significantly reduces roof and sidewall displacements compared with steel arch support. All measured displacement values remain within allowable limits and tend to stabilize over time, demonstrating the effectiveness and applicability of the B–M–S support system under the geological conditions of the Mao Khe project.
Assessing exam quality through measurement indices and solutions for improving testing effectiveness at Quang Ninh University of Industry
This study aims to develop a procedure for evaluating exam quality based on mathematical indices, thereby enhancing objectivity and efficiency in the post-exam analysis of end-of-course assessments. The indices employed include Difficulty Index (P), Discrimination Index (D), and Percentile Rank, which provide a basis for assessing the appropriateness of each test item in differentiating student performance levels. The research method relies on data from end-of-course examinations, applying a percentile-based grouping algorithm (Upper 27%, Lower 27%) to calculate discrimination, while also developing an Excel-based tool to automate the data processing workflow. The findings indicate that indices P and D effectively identify items with unsatisfactory difficulty or discrimination values, thus informing recommendations for retention, revision, or elimination. The study affirms that applying simple yet rational mathematical indices not only saves time and reduces subjective bias but also improves the quality of item banks and the overall effectiveness of assessment practices at Quang Ninh University of Industry.
Solutions to improve the quantity and quality of writing textbooks and reference materials at Quang Ninh University of Industry
In 2021, the Ministry of Education and Training issued a Circular on the compilation, selection, appraisal, approval and use of teaching materials and university education textbooks, which requires each subject to have at least one textbook as the main document for teaching and learning. However, at present, the current situation of compiling textbooks and reference materials at some universities is still limited in both quantity and quality, due to many reasons such as lecturer capacity, lack of resources, and not closely linked to practice. This article will analyze the current situation of compiling undergraduate and master's textbooks at Quang Ninh University of Industry based on aggregated data from 2014-2025 and propose solutions to improve the quantity and quality of textbooks and reference materials in the coming time.
Streamlining the Organizational Structure to Enhance Management Efficiency at Quang Ninh University of Industry
In line with Resolution No. 18-NQ/TW, Resolution No. 19-NQ/TW of the Central Committee, the University’s Development Strategy for 2023–2030 with a vision to 2035, the Resolution of the 26th Party Congress of Quang Ninh University of Industry for the 2025–2030 term, and Government regulations, the University has implemented measures to streamline its organizational structure and downsize its workforce. This task is essential, bringing practical benefits such as optimizing resources, improving operational efficiency, and creating conditions for sustainable development. Streamlining not only reduces operating costs but also strengthens flexibility and adaptability to the changes in today’s higher education environment.
Solutions to the problem of part-time work for students of Quang Ninh Industrial University in the current period
Currently, Quang Ninh University of Technology is training more than 1,000 students, of which, 2/3 are students from other provinces and Laotian students. For all students, in order to participate in the learning process, each month they have to spend a large amount of their parents' money. Not only that, students always have the question in their mind: "What will I do after graduation and how will I do it?". Therefore, nowadays, in addition to class time, students spend the rest of their time working part-time. In addition to working part-time for income, students also want to accumulate more experience, learn more practically... And of course, part-time work has become a trend because for students, especially when living in today's competitive society, social knowledge and practical knowledge greatly affect their thinking ability as well as their ability to work after graduation. But the question is: is “part-time work for students” the best solution and what do they gain and lose when they have to both study and work? With the desire to deeply research the above issue, the group of authors chose the topic “Solution to the problem of part-time work for students of Quang Ninh University of Technology in the current period” as their research topic.
E-book acceptance of students at Quang Ninh University of Industry based on the extended technology acceptance model (TAM)
In the context of the rapidly expanding digital transformation in education, e-books are increasingly regarded as an effective tool that enables students to access knowledge quickly, conveniently, and flexibly. However, the level of acceptance and the factors influencing students' use of e-books at Quang Ninh University of Industry have not been extensively studied. This paper employs the Extended Technology Acceptance Model (TAM) to analyze the factors affecting the intention and behavior of using e-books among 280 students from various academic disciplines. Data were collected through a structured questionnaire and analyzed using SPSS version 26. The findings indicate that perceived usefulness (PU), perceived ease of use (PEOU), social influence (SI), attitude toward use (ATT), and facilitating conditions (FC) all have significant impacts on students’ intention and behavior regarding e-book usage.
Factors influencing the intention to purchase green products among people in Quang Ninh
The environmental pollution situation in Quang Ninh, especially air pollution with fine particulate matter (PM10 and PM2.5), is becoming increasingly complex and is seriously affecting public health, particularly in areas with high population density and industrial zones. This environmental degradation has negatively impacted the quality of life of the residents and has increased health concerns. In response to this situation, the need to protect the environment has become urgent, requiring effective intervention solutions. With the aim of raising community awareness and promoting environmental protection behaviors, this study focuses on analyzing the level of air pollution in Quang Ninh, while also surveying the consumption habits of residents, particularly the trend of green consumption. The research findings show a positive shift in people's behaviors when choosing green products, contributing to the reduction of negative environmental impacts. This is a positive signal in promoting environmental protection and moving towards a sustainable consumption model in Quang Ninh Province.
Design and 3d simulation of mechanical transmissions applied in teaching and learning basic subjects of engineering
Basic engineering subjects (technical drawing, theoretical mechanics, strength of materials, machine parts...) are taught from semester 3 for engineering students. In these basic subjects, students begin to approach 2D drawings of objects and structures. Most students find it difficult to visualize the shape and application of objects in reality. Currently, 3D mechanical software is developing strongly, diverse in types, and applications are increasingly rich, from drawing 3D shapes, assembling parts into structures, simulating the operation of detail clusters to the operation of machines. Calculating the dimensions of mechanical transmissions and simulating their shape and operation will help learning and teaching basic engineering subjects become more vivid. Students can approach examples of objects in lessons more easily when they have not been exposed to reality, increasing the effectiveness of learning and teaching.
Research on calculation of cutting machine drive system
This paper presents a study on the principles and design calculations of the drive system for a micro-fiber cutting machine in chemical fiber production, focusing on motor selection, transmission ratio distribution, and technological parameters to ensure stable, reliable, and efficient operation. The research establishes relationships between cutting speed, feed speed, motor speed, and adjustment length, providing a basis for motor selection, machine calibration, and product quality control. The results demonstrate that the designed drive system meets technical requirements with high reliability, contributes to productivity improvement, reduces waste, and serves as a foundation for subsequent design and manufacturing stages.
Analysis of reaching laws in smc-based pmsm control: strategies for chattering suppression and contemporary trends
Permanent Magnet Synchronous Motors (PMSMs) have seen widespread adoption across industrial and commercial applications, with growing demands for maintaining high efficiency and reliability under complex operating conditions. The nonlinear dynamics of PMSMs, combined with the influence of external disturbances, pose significant challenges to achieving high-precision control. Sliding Mode Control (SMC) has gained considerable attention due to its strong robustness against system parameter variations and load disturbances in PMSM drive systems. This paper reviews the state-of-the-art research on SMC for PMSMs, emphasizing the design of sliding laws aimed at alleviating the chattering effect while ensuring Lyapunov stability. In addition, the paper outlines the future development trends in SMC design and application for PMSMs.
Mô hình giám sát và dự báo thông minh cho rau má thủy canh dựa trên machine learning (ML) và deep learning (DL)
This paper proposes and presents a novel approach to optimizing the yield and quality of Centella asiatica (Gotu Kola) in a hydroponic environment through the extensive application of Machine Learning (ML) and Deep Learning (DL) techniques. The system is built with IoT sensors to collect real-time data on key environmental parameters such as nutrient solution pH, EC concentration, temperature, light intensity, and air humidity. This data is then transmitted to a cloud platform where Artificial Intelligence (AI) processes and analyzes it using ML and DL models. The main objective is to develop accurate predictive models that enable automated decision-making and early warning, thereby improving cultivation efficiency and minimizing risks.
Nghiên cứu công nghệ tuyển nổi quặng apatit loại III tại khai trường 27, 28, 29 xã Bát Xát, tỉnh Lào Cai
This study focuses on the flotation technology of Type III apatite ores from mining sites 27, 28, and 29 in the Ban Vuoc – Ban Qua area, Bat Xat district, Lao Cai province, Vietnam. These ores are characterized by low P₂O₅ contents (12–16%) and high proportions of silicate, carbonate, and clay minerals, which pose challenges for beneficiation and limit industrial applications. Two representative samples (M1 and M2) were analyzed using XRD, polarizing microscopy, AAS, ICP-OES, and particle size distribution. Results indicated that most P₂O₅ is concentrated in the fine fraction (<0.045 mm), highlighting the need for fine grinding to liberate apatite minerals. Flotation tests were carried out to determine the optimal flowsheet and processing parameters. The proposed scheme consists of one rougher flotation, three cleaners, and one scavenger. Optimal conditions were: grinding fineness of 85–90% <0.074 mm, pulp density of 25% solids, pH = 9, fatty acid collector dosage of 500 g/t (MD/VH = 150/350 g/t), and sodium silicate dosage of 500 g/t. Under these conditions, the concentrate achieved P₂O₅ grades of >32% with recoveries of 83–85%. Compared with previous studies in Cam Duong and Tang Loong, where recoveries typically reached only 70–75%, these results represent a notable improvement and are comparable to some international flotation technologies. A key advantage is the reliance on locally available equipment and reagents, ensuring feasibility and reducing dependence on imports. This research provides new scientific data on Type III apatite ores from a previously unreported area and demonstrates practical significance in improving low-grade ore utilization, reducing pressure on high-grade deposits, and ensuring a stable domestic supply of raw materials for fertilizer production.