Online-Journals.org (International Association of Online Engineering)
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Exploring the Impact of Peer Mentoring on Computer-Supported Collaborative Learning among Undergraduate Students
Get PDFResearch indicates that peer mentoring supports students learning and emotional stability. However, its usability and impact in Computer-Supported collaborative (CSCL) learning activities that enhance students’ learning in and outside the classroom require contextual exploration. Hence, this study examined the usability and impacts of peer mentoring in CSCL among undergraduate students using a mixed-methods research approach. Data collection was conducted by administering a questionnaire with both qualitative and quantitative elements. Data analyses started with thematic coding of the nuanced texts collected through open-ended questions, and structural equation modelling (SEM) was used to analyze the quantitative data. Findings show that students have a different understanding of collaborative learning, but a common acknowledgment is that peer mentoring is beneficial in CSCL. Importantly, student views are impacted by gender, college affiliations, and CSCL experience. Drawing on the findings, we conclude that peer mentoring’s acceptability in CSCL is feasible and can affect students’ learning positively. However, it should be planned effectively and deployed based on contextual data showing students’ preference for CSCL and their peculiar need for peer mentoring
University Teachers’ Psychological State During the Stress of Online Education after Pandemic in Wartime in Ukraine
Get PDFOnline education is a world need. Many universities continue providing online education. The first stress from pandemic and online teaching went on and university teachers managed to cope it. The next stress from wartime in Ukraine came and online teaching goes on, so university teachers manage to cope it again. The purpose of the research is to show university teachers’ psychological state during online education after pandemic in wartime in Ukraine. For achieving the stated purpose, we applied the methods of analysis and synthesis, questionnaire, calculating methods, in particular, MS Excel. The questionnaire consisted of questions help to describe the psychological teachers state, fear, stress, anxiety. The participants of the research became 49 university teachers from Ukraine. The results are as follows. The most common negative impacts on mental health are depression, isolation, family danger, possibility of being attacked, pressure from the war, lack of social life. The most constructive impacts on mental health are morale, social media, chatting, good war news. It is recommended to use different resources to overcome university teachers’ stress. They are faith, feelings, socialization, imagination, thinking, physiological activity. The conclusion is online education after pandemic in Ukraine is still stressful because of wartime. It is recommended to use different resources to overcome university teachers’ stress
The Impact of Artificial Intelligence-Based Virtual Laboratories on Developing Students’ Motivation Towards Learning Mathematics
Get PDFThis research investigates the impact of virtual laboratories (VLabs) based on artificial intelligence (AI) on developing students’ motivation toward learning mathematics. A semiexperimental approach is used to achieve the research objectives. The research sample, consisting of 80students from the seventh grade, is selected by the purposeful sampling approach. The research sample is randomly distributed into three groups: two experimental groups and one control group. The first group of 26 students is taught using the AI-based VLabs, while the second group of 27 students is taught using a VLab based on 3D visual imaging, and the third group, a control group consisting of 27 students, is taught using the traditional approach. The research instrument, a questionnaire for learning motivation, was designed after ensuring its validity and reliability. The findings of the motivation questionnaire indicate that students in the first experimental group have more motivation to learn mathematics than students in the second experimental group and the control group. The results also show that the students in the second experimental group have more motivation to learn mathematics than the students in the control group. Given the said findings, the research recommends using virtual laboratories based on artificial intelligence and all its applications in the learning process due to their impact on students’ mathematics learning
Factors Influencing the Quality of Online Teaching: Application of DEMATEL and Cluster Technology
Get PDFWith the informationization of higher education, colleges and universities can fully apply online teaching mode to education and teaching. Therefore, analysis of factors affecting teaching quality of college teachers in online teaching can effectively make evaluation object (teachers) have a sense of achievement and pride, so as to mobilize enthusiasm of evaluation object and to stimulate the consciousness of honor and shame and consciousness of competition. This study adopts application of DEMATEL and Cluster technology, conducts a questionnaire survey on 5 colleges and universities in Henan Province, analyzes and identifies the teachers’ factors among factors affecting teaching quality of E-commerce courses, and analyzes comprehensive influence index of teachers’ factors, namely impact degree, affected degree, cause degree and centrality degree. A cluster flight is carried out on evaluation results of students. Results show that X2-2, X2-4, X2-5, and X4-3 represent high degree of centrality and high degree of cause, that is high importance of factor and the cause factor. The results of teacher evaluation can be divided into three groups by the K-means clustering method, and the clustering group shows significant significance for all research items (p < 0.05). The weights of X2-2, X2-4, X2-5, and X4-3 in cluster analysis also rank the top four, which is highly consistent with the results of DEMATEL’s research, demonstrating that application of DEMATEL and Cluster technology proposed is very maneuverable and scientific. Research results have important reference value for improving online teaching strategy, improving the quality of online teaching, and regulating teaching activities as a whole through the use of online teaching quality evaluation
Study on the Impact of Gamified Teaching Using Mobile Technology on College Students’ Learning Engagement
Get PDFMobile technology has become an indispensable resource in people’s lives, and educational software applications are closely related to day-to-day life. These applications provide an effective basis for implementing interactive teaching and allow teachers and students to quickly exchange information through mobile devices. Compared with teachers, students are tolerant and open about mobile technology. To meet the learning needs of students, adopting different teaching methods to improve learners’ learning outcomes is the focus of mobile learning. Therefore, gamified teaching supported by various information technologies such as computers, multimedia, and mobile technology has received widespread attention. In this study, 124 undergraduate students majoring in Civil Engineering from Harbin University of Science and Technology, Heilongjiang Province, were randomly assigned to one experimental group (with gamified teaching design, 62 students) and one control group (without gamified teaching design, 62 students). The paired sample T test was used to compare the pre- and post-test scores of the learners, while the independent sample T test was used to analyze the learning engagement (behavioral, cognitive, and emotional engagement) of college students under gamified teaching using mobile technology. Results show no significant difference in pre-test scores between the experimental and control groups (P = 0.374 > 0.05), meeting the prerequisite for the comparative experiment. Gamified teaching using mobile technology found significantly improved test scores (P = 0.003 < 0.05), where independent sample T test results showed a significant difference in learning engagement (behavioral, cognitive, and emotional). After using gamified teaching using mobile technology, the experimental group of students showed a significant increase in learning engagement, which is consistent with the results of most of the literature. The results of this study have important reference value for school administrators to propose new teaching strategies and for teachers to integrate information technology to assist the teaching process, to propose solutions for building interactive teaching environments, and to alleviate the fatigue phenomenon that often occurs in the application of multimedia technology in current information technology teaching in universities
Providing Access Isolation to Information in the Database
Get PDFMost modern database management systems (DBMS) provide the ability to restrict user access to database objects. The problems of restricting access to individual records are arising increasingly in connection with the growing need for flexibility in restricting access in modern databases, including when using them to store information classified as state or commercial secrets. Currently, these tasks are solved individually, and there are no commonly formalized approaches to designing such access restrictions. The study aims to reduce the design time for database schemes when it is necessary to restrict access to individual records of the database tables and improve the quality of the designed schemes by using the proposed algorithms. Questions about the design of the protected databases with the use of access restrictions to separate records are considered. Both restriction of illegal access to records, and granting false camouflage information instead of required is considered. The proposed software package will consist of 2 main parts: a database and a client application. To differentiate access, the study proposed the use of a record-protecting lock
Difficulties in Treating Ethnic Minority Children with ADHD and the Role of Mobile Applications
Get PDFThere is proof that kids and teens from ethnic minorities get less health care than theirnon-minority peers, despite the fact that Attention Deficit Hyperactivity Disorder (ADHD) ismore common in these populations. Minority children might not receive timely, adequateADHD intervention because of the low socioeconomic position of minority parents, their lackof awareness regarding ADHD, and the available remedial techniques. People are looking tothe digital world for answers to challenges in their daily lives as the number of mobile applicationsgrows. People with impairments now have equal access to learning opportunitiesbecause to technological advancements. The majority of their time is now spent on mobiledevices by kids. As a result, using mobile applications to solve their problems would be quitesuccessful. Mobile learning, also known as e-learning programs that utilize mobile devices,can be employed as a form of therapy to enhance both executive functioning and generalwell-being. Also, by practicing cognitive and metacognitive task abilities more frequently, theyincrease motivation in kids and teenagers. Also, the understanding and retention of the presentedinformation might be aided by the audiovisual stimuli offered through smartphoneapplications. They may therefore serve as crucial learning aids for kids with ADHD. The currentstudy examines the function and efficacy of mobile applications in enhancing the qualityof life of children from ethnic minorities who have Attention Deficit Hyperactivity Disorder(ADHD), as well as the barriers that may impede or delay their access to treatment services
Analysis and Performance Evaluation of the Static and Dynamic Channel Bonding for the IEEE 802.11ac WLAN
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According to the rising number of users and the application development that needs fast transfer rates. The main objective behind the development of IEEE 802.11ac was to deliver WLANs with exceptionally very high throughput rates. Significant improvements were incorporated into the PHY and MAC layers to achieve this, leading to enhanced data rates and overall network performance. These enhancements have enabled the standard 802.11ac to support channel bonding schemes. This paper looks at how channel bonding affects the performance of system, especially in terms of delay and amount of throughput. The research paper looks at four different scenarios with different numbers of channel BW 40,80 & 160MHz, and various spatial streams (SS) from 1 to 8. The network simulator (NS-3) version 3.37 is used to simulate these scenarios. The results of the simulation indicate that when Dynamic Channel Bonding (DCB) is applied, the highest throughput and least amount of delay values are acquired. Specifically, for MIMO (8×8) SS and with respect to the Static Channel Bonding (SCB), the best improvement of throughput and delay are obtained with DCB in the highest (48 node number) scenario. The throughput development values are (90.21%, 87.3%, and 42.91%) and the delay improvement values are (47.43%, 46.61%, and 30.03%) for channel BWs 40,80, &160 MHz, respectively
Design and Analysis of Wideband Stair Step-Shaped Rectangular Ring Microstrip Antenna with DGS for IoT Applications
Get PDFA novel miniature wideband rectangular ring antenna is proposed for 4.6–6.2 GHz which is compatible with IoT applications. The wideband response of the proposed antenna is achieved by a partial ground and stair step structure. Because modifying the width and etching the ground plane does not improve the impedance matching over a large bandwidth, a triangular shape DGS is inserted in the partial ground plane to increase the antenna bandwidth with enhanced return loss. The wideband features of the antenna were explored here by incorporating different DGS shapes such as triangles, rectangle, pentagon, circle, and oval in the partial ground. The results have been successfully verified through measurement. The simulated fractional bandwidth is greater than 29% at 4.6–6.2 GHz whereas the measured fractional bandwidth is 27.6% at 4.75–6.2 GHz. In both cases, the maximum return loss is greater than 55 dB. The gain of the antenna is greater than 2.6 dB with good efficiency and nearly omnidirectional radiation pattern in shape. Due to its compact size and outstanding performance, the suggested stair stepshaped rectangular ring antenna could be a promising choice for IoT and wireless applications
The Performance of Sensitivity-Maps Method in Reconstructing Low Contrast and Multi-Contrast Objects for Microwave Imaging Applications
Get PDFThe microwave imaging system for breast tumor/cancer detection requires high sensitivity to detect abnormal tissue that has little contrast in high-density breasts. This paper proposes a qualitative microwave imaging system simulation based on inverse scattering using the sensitivity-maps method. This method utilizes two measurement types for system calibration: a reference object as a scatterer-free background and a calibration object to obtain the system's impulse response. The object under test (OUT) consists of an object with low dielectric contrast and a phantom with multiple low dielectric contrasts (multi-contrast). Reconstruction is carried out on three types of S-parameter measurement data, namely S_11,〖 S〗_21, and a combination of both. S-parameters are measured at several frequencies, which are 3, 10, 14, 15, 16, 20 GHz, and the combination of all those frequencies (multifrequency). Reconstructed images show that the system is capable of reconstructing dielectric objects accurately. Quantitatively, the results show that the multifrequency S_21 measurement yields the best image quality with relative root mean squared error (RRMSE) values of 0.1272 and structural similarity index (SSIM) of 0.9076. The designed imaging system also successfully reconstructs multi-contrast phantom accurately with RRMSE of 0.1434 and SSIM of 0.4609