Статьи журнала - International Journal of Modern Education and Computer Science
Все статьи: 1064
Статья научная
While designing a database at the conceptual level using the Entity-Relationship (ER) model is challenging for novices, mapping an Entity-Relationship Diagram (ERD) to a relational schema is not an easy task, either. One of the problems is students' lack of understanding of the underlying mapping principles. The mental gap between the two models in students also makes it difficult for them to perform the conversion. This paper describes two studies that aimed at helping students fill the gap and improve their ERD-Relational schema mapping performance by the use of a visualization tool, MySQL Workbench. We investigated the effect of using MySQL Workbench in teaching ERD-Relational schema mapping. We identified the pros and cons of using visualization in teaching the topic. Our results show that visualization can increase student interest and engagement, and facilitate students connecting the concepts in the two models. With an instructional delivery method that emphasizes the underlying mapping principles, a visualization tool could help undergraduate students improve their performance on ERD-relational schema mapping and facilitate their understanding of the ER model.
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Статья научная
The main purpose of the article is to highlight and determine the level of influence of the most significant threats from the use of artificial intelligence in the educational process in the context of ensuring information security. To achieve this goal, the research methodology involves the use of an expert analysis method, which, through the Delphi method, will help to identify the most significant threats to the use of artificial intelligence in the educational process, a paired comparison method, which is necessary to implement the hierarchical analysis method, which in turn aims to organize a certain list of experts. As a result of the study, the most significant modern threats to the use of artificial intelligence in the educational process in the context of ensuring information security were identified. The resulting matrix of hierarchical ordering of threats made it possible to divide them into those that require immediate intervention and those that are less important. The innovativeness of the results obtained is revealed through the established methodological approach to modeling the ordering of the influence of threats from the use of artificial intelligence on the educational process in the context of ensuring information security. The study is limited by taking into account only the specifics of the educational process in Ukraine.
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Статья научная
The present study mainly focused on the impact of Instructional Conversation (IC) method on reading comprehension of Iranian intermediate high school learners. To accomplish the study,71 high school learners studying English. In order to determine their homogeneities in reading comprehension, a reading comprehension test was given to them. Then they based on their own scores, 45 students assigned two experimental groups and one control group, each include 15 students. Control group are taught through the traditional method, first experimental group are taught through Instructional Conversation method and second experimental group received Instructional Conversation with traditional method. After instruction, a post-test was given to them. The findings reveled differences in the performance of the three groups of the study. Based on the result of these study, adopting integrated approach (instructional conversation method plus traditional method) is more useful for increasing reading comprehension of the students.
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The Effect of Weekly Quizzes on Students' Final Achievement Score
Статья научная
The present study aimed at investigating the effect of weekly quizzes on Iranian high school students' performance on final achievement tests. This effect, which is technically referred to as washback, is defined as the effect of testing on learning and teaching. Most scholars have attempted to provide guidelines in order to achieve positive washback. While some suggest frequent quizzes as a means of positive washback, others oppose the idea. The proponents claim that frequent quizzes stimulate practice and review, give the students more opportunities for feedback and have a positive influence on students' study time. The opponents, on the other hand, believe that too frequent testing might inhibit of larger units of instructional material and frustrate anxious students, and thus, hinder learning. This study explored whether students taking weekly quizzes performed better in the final achievement tests. 70 students studying in grade two of high school were selected and divided into two groups. One group received weekly quizzes and the other group took only midterm exam. The results indicated that the group with weekly quizzes performed better than the group without quizzes.
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The Effectiveness and Impact of Teaching Coding through Scratch on Moroccan Pupils’ Competencies
Статья научная
Coding for pupils has become a new trend in information communication technology (ICT) education as it is a gateway to the new digital era for future generations where computers are one of the backbones of modern society. In this respect, the present study aimed at investigating the usefulness and impact of teaching coding through “Scratch” (i.e., a coding software for pupils) on Moroccan pupils, measuring their capacity to learn coding and finally exploring Moroccan teachers’ perceptions about it. Therefore, a pre-test post-test experimental course study took place targeting 38 pupils of the 6th grade in a rural area school. The control group (19 participants) was not taught the basics of Scratch coding while the experimental group (19 participants) was taught through practical Scratch coding initiation lessons based on the theory-based model for computer programming teaching. Furthermore, a quantitative survey questionnaire was used to gather 5th and 6th grade teachers (202 participants) perceptions about Scratch. The Statistical Package for Social Sciences was used to analyze the data. The results of the quantitative questionnaire showed that Moroccan teachers endorse Scratch teaching for its potential benefits while the experimental study results proved that computer coding can be easily be integrated in Moroccan schools. The software is suitable for the students since they demonstrated significant interest in coding and have experienced positive impacts on various competencies.
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Статья научная
The purpose of the present research is to designate the effects of Scratch-based game activities on students' attitudes towards learning computer programming, self-efficacy beliefs and levels of academic achievement. The research was conducted through a pre-test – post-test control group quasi-experimental study. The study group consists of 49 students studying at the Faculty of Engineering. The test group was administered a teaching method with Scratch-based game activities. On the other hand, the control group was directly taught C++ topics via an editor. Research data were collected via an implementing academic achievement test (Kr-20= 0, 71), attitude towards a learning programming scale (Cronbach's Alpha =0.84) and a computer programming self-efficacy scale (Cronbach's Alpha= 0.966). Our findings are as follows: A significant number of the students consider themselves as mid-level efficient in C++ programming. Scratch-based game activities render no effects on students' attitudes and self-efficacy perceptions. On the other hand, Scratch-based game activities render significant contributions on students' academic achievements in C++ programming language.
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The Estimation and Experiment of Axial Force in Deep Well Pump Basing on Numerical Simulation
Статья научная
An axial force estimation is a crucial problem in the design of a deep well pump. According to the cost of time and financial resources by experimental measurement and low precision and applicability of using experiential formulas, the effects of solid modeling, mesh generation, residual convergence precision, turbulence model and numerical solutions on the accuracy of numerical simulation were investigated. And the best scheme was applied in the numerical simulation to predict the axial thrust of the deep well pump. The simulation values of axial force are in agreement with the testing values, and the maximum error is less than 10%.
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Статья научная
The limitations on the Academic Progress Information System (SIsKA) application, in terms of its interface and functionality, have a direct consequence on the quality of service and monitoring student progress in the Computer Science Department of Universitas Pendidikan Ganesha. Therefore, it is necessary to overcome these limitations through research that focuses on the development and evaluation of the next generation of SIsKA (SIsKA-NG) mobile application with real-time notification advantage compared to its counterpart existing web application. The heuristic evaluation of the first stage of this mobile application development identified twenty problems where eight problems with the highest severity (Catastrophic), six problems with high priority (Major), three problems with low priority (Minor) that need to be solved, and three problems that do not need to be fixed unless there is extra time. User satisfaction was measured by using the System Usability Scale (SUS) questionnaire and gave the final score of 82.25. That score was higher than the minimal SUS standard score of 68.00 and was graded as very good, which means that users are very satisfied with using the application. To maximize more of the SIsKA-NG mobile performance, usability testing was conducted to obtain qualitative data from the same SUS respondents by using the Concurrent Think Aloud (CTA) method. CTA gave a summary result of twenty-one criticisms or suggestions that were referred to by the second stage of the SIsKA-NG mobile development.
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Статья
Morocco has recently introduced the syllable-based reading approach (SbA) in Arabic and French Curricula. Thus, this study aimed at measuring the impact and effectiveness of said approach on Moroccan pupils’ Arabic reading competency as well as how teachers approach it based on the hermeneutic phenomenology theoretical framework. A quantitative survey questionnaire was distributed to 227 1st and 2nd grade teachers from all twelve regions of Morocco. The Statistical Package for the Social Sciences (SPSS) was used to analyze data through descriptive statistics and statistical hypothesis testing. The results showed that most Moroccan teachers advocate the use of the SbA as it positively impacts Arabic reading competency. They have, also, pointed out that time and demanding lesson planning are some of the SbA’s drawbacks. Also, it was found that there are no differences in SbA’s teaching practices and perceptions between female and male teachers except for the practice of assigning reading homework as female teachers tend to assign more reading homework. The results of the study are of significant importance to the MENA region as it evaluates field work regarding SbA.
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The Impact of E-assessments System on the Success of the Implementation Process
Статья научная
This study aims to identify the attitudes of the sample individuals from students that have used the electronic assessments (e-assessments) system at Isra University in Jordan. These attitudes describe the relationship between the availability of the requirements for e-assessments applications and the success of its implementation. Analytical descriptive method and sample research have been used. The samples included 246 students from 5 colleges covered by the research sample. The instrument of the study was a questionnaire which consisted of many variables that measured influential relationship among them. The research concluded that there is a relationship effect between the availability of the requirements and the success of the implementation process of the e-assessments system. There is a difference in the members attitudes of the research samples over the impact of which variables are most influenced. The results showed that there is a variation in the attitudes on all variables.
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The Impact of Feature Selection on Meta-Heuristic Algorithms to Data Mining Methods
Статья научная
Feature selection is one of the issues that have been raised in the discussion of machine learning and statistical identification model. We have provided definitions for feature selection and definitions needed to understand this issue, we check. Then, different methods for this problem were based on the type of product, as well as how to evaluate candidate subsets of features, we classify the following categories. As in previous studies may not have understood that different methods of assessment data into consideration, We propose a new approach for assessing similarity of data to understand the relationship between diversity and stability of the data is selected. After review and meta-heuristic algorithms to implement the algorithm found that the cluster has better performance compared with other algorithms for feature selection sustained.
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The Impact of Lecture Attendance on Exams for Novice Programming Students
Статья научная
In this paper, the correlation between lecture attendance and assessment tasks on final exam performance of introductory programming students has been analyzed to identify if lecture attendance, and completion of in-class and take home formative assessment tasks affects student performance in the final examination. In this study, only lecture attendance, homework exercises and class demonstration scores, and final exam marks have been considered. This study used Spearman's Rank correlation coefficient and multiple regression techniques via SPSS software to analyze the student data of the academic years 2012, 2013 and 2014 of an introductory programming course to test the hypotheses. It is found that, there is a significant correlation between homework exercises and final exam scores. However, formal lecture attendance and final exam performance were negatively correlated. Moreover, multiple regression results of assessment tasks such as homework exercises, class activities and lecture attendance on final exam scores, did not provide any significant value to support the statement "Marks achieved in homework, class demonstrations, and lecture attendance, have a significant positive impact on final examination results".
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Статья научная
Mobile devices such as smartphones and tablets are becoming increasing popular among students, setting out a new way to communicate, collaborate and learn. The use of portable devices has the capability to inspire new approaches to learning. It is therefore important to examine the students' viewpoints about the educational use of mobile technology in supporting the learning process. The purpose of this study is to determine the impact of mobile devices for learning purposes by exploring the kinds of interactions that students in Nigerian universities have with their portable gadgets. A sample of 240 higher education students participated in the study by completing the researchers' questionnaire. The results of the study indicate the students use their portable devices to exchange education-related messages and academic files with classmates, search the internet and library databases for academic materials, practice online quizzes or tests and hold discussions with classmates among others. The statistical analyses result show that there is no significant difference in the students' use of mobile devices based on gender.
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The Model of the Evolution of the Knowledge Content and Contemporary Science Education Crisis
Статья научная
We try to diagnose the situation in science education in the beginning of the 21st century. The coincidence of the occurrence of the global science education crisis and rapid acceleration of development of the science itself allows us to derive a differential equation describing basic patterns of development of human knowledge, using a few quite obvious parameters defined by social and biological determinants of the given moment in history.We then examine the proposed solutions of the general educational problem. Predictions about the evolution of knowledge/science give us the ability to reject some of them,and the analysis of social needs, seems to lead to the one,which we called a "three-way system".
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The Obstacles in Big Data Process
Статья научная
The increasing amount of data and a need to analyze the given data in a timely manner for multiple purposes has created a serious barrier in the big data analysis process. This article describes the challenges that big data creates at each step of the big data analysis process. These problems include typical analytical problems as well as the most uncommon challenges that are futuristic for the big data only. The article breaks down problems for each step of the big data analysis process and discusses these problems separately at each stage. It also offers some simplistic ways to solve these problems.
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The Optimal Principle of Stable Solutions in Lexicographic Cooperative Games
Статья научная
Neumann-Morgenstern’s solutions NM (v) as stable solution’s optimal principle is stated in a lexicographic v = (v1, v2 ,..., vm)T cooperative game. The conditions of NM (v) existence are proved for the cases, when: 1. v1 scalar cooperative game’s C-core C (v1) and NM (v1)solutions are equal; 2. Scalar cooperative v1 game’s C-core and NM (v1) solutions are different. In the first case the sufficient conditions are proved in order to say that a C-core C (v) of a lexicographic cooperative v game must not be empty and it should be coincided to NM (v) . In the second case the necessary condition of NM (v) existence is proved. In the case of the existence of NM (v) solutions their forms can be established. Some properties NM (v) of solutions are stated.
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The Platform Built Based on the Mode operations of AES and the Image Applications
Статья научная
This paper presents an image encryption instead of text to observe the block cipher modes of operation of the complex AES processing. A platform is built based on the mode operations for the experiments. The cipher image of ECB may appear patterns due to the identical color inputs. CTR and MCTR make those identical inputs different by adding counters to remove the patterns while CBC, CBF, and OBF do it by adding serious Cipher function outputs which are almost random numbers. The mode features resulted from adding number series and the ways of addition, are discussed and compared, which help to design the Switching Control to configure all the modes into a platform for the AES mode operations and image test.
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The Proposed GSD Model to Solve Coordination and Communication Problems
Статья научная
Global Software Development (GSD) is the most recent and major trend in software engineering domain. It provides many benefits but also faces various challenges in control, communication and coordination due to socio-cultural, geographical and temporal distance. Scrum is increasingly being applied in GSD as it supports teamwork between developers and customers. Scrum method offers a distinctive feature to mitigate the effects of socio-cultural and geographical but not temporal distance on coordination in GSD projects. This paper explains how Scrum helps to mitigate the effects of temporal distance that includes increased coordination costs in GSD projects.
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The Proposed Methods to Improve Teaching of Software Engineering
Статья научная
The use of software is an essential part of our modern lives. Hence, this increases the importance of studying Software Engineering (SE) course. In general, the software engineering graduates usually lack the necessary skills, expertise, abilities, and sufficient knowledge when beginning their careers in the software industry. Due to that, a majority of students find it difficult to find relevant jobs. This paper proposes novel methods to teach SE course to improve the teaching and enhance knowledge and skills of students. It is proposed to include: identifying the course learning objectives (CLOs) and the required skills of the SE course, combining cooperative learning and mastery learning strategies to teaching software engineering, using social media to teach SE course, and establish the OSES in an educational institution. The goal of this paper is to improve the quality of SE teaching and facilitate students learning to prepare them for their future careers. Qualitative technique is used as a research design to evaluate the proposed solution. The results indicate that this proposal is supported by the majority of professionals working in the academia and industry.
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Статья научная
This research aims to find the reasons which affects students in college of applied sciences in Ibri. The programming courses are very important for the Information technology students in general. The sample consisted of 50 students from Ibri College. A questionnaire was developed for the purpose of this study. Content validity and reliability were ensured to be sufficient for the study. The finding of study showed that the students faced some problems during their study in the programming courses like the short time for practical, some of them as their English language is not good so it also affects their skills and knowledge in programming. Finally this study presents recommendations and advice to improve student's skills and help them to avoid getting low marks in programming courses.
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