Статьи журнала - International Journal of Modern Education and Computer Science
Все статьи: 968
Comparison and Evaluation of Intelligence Methods for Distance Education Platform
Статья научная
In this paper two favorite artificial intelligence methods: ANN and SVM are proposed as a means to achieve accurate question level diagnosis, intelligent question classification and updates of the question model in intelligent learning environments such as E-Learning or distance education platforms. This paper reports the investigation of the effectiveness and performances of two favorite artificial intelligence methods: ANN and SVM within a web-based environment (E-Learning) in the testing part of an undergraduate course that is "History of Human Civilizations" to observe their question classification abilities depending on the item responses of students, item difficulties of questions and question levels that are determined by putting the item difficulties to Gaussian Normal Curve. The effective nesses of ANN and SVM methods were evaluated by comparing the performances and class correct nesses of the sample questions using the same 3 inputs as: item responses, item difficulties, question levels to 5018 rows of data that are the item responses of students in a test composed of 13 questions. The comparative test performance analysis conducted using the classification correctness revealed yielded better performances than the Artificial Neural Network (ANN) and Support Vector Machine (SVM).
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Comparison of ANFIS with MLP ANN in Measuring the Reliability based on Aspect Oriented Software
Статья научная
In fact, Reliability as the qualities metric is the probability success or The probability that a system or set of tasks without failure for a specified constraints of time and space, as specified in the design and operating conditions specified temperature, humidity, vibration and action. A relatively new methodologies for developing complex software systems engineering is an aspect-oriented software systems, that provides the new methods for the separation of concerns multiple module configuration or intervention and automatic integration them with a system. In this paper, using MLP artificial neural networks and adaptive fuzzy neural network assess the reliability of the aspect oriented software and at the end, two methods were compared with each other. After examination, the root means square error method based on artificial neural networks, fuzzy neural network-based method of 0.024262 and 0.021874 to be adaptive. The results show that the method is based on adaptive fuzzy neural networks with low error in the estimation of reliability, performance is better than the MLP artificial neural network approach.
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Comparison of Requirement Prioritization Techniques to Find Best Prioritization Technique
Статья научная
This paper describes an assessment of different requirement prioritization techniques (binary search tree, AHP, hierarchy AHP, spanning tree matrix, priority group/Numerical Analysis, bubble sort, MoSoW, simple ranking and Planning Game) on the basis of previous literature. Five research papers and thesis are critically reviewed, in order to select best requirement prioritization method. The study of literature shows that AHP is the best requirements prioritization technique amongst all the requirements prioritization techniques. It provides the most efficient and reliable results which are on ratio scale. It is fault- tolerant and provides a consistency check.
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Computational Approach to Image Segmentation Analysis
Статья научная
Image division refers to the way toward dividing an advanced picture into various portions. Image division says to a parcel of an image into various divisions that are homogeneous or comparable. The objective of the division is to Simplify or potentially changes the portrayal of an image into something that is more important and simpler to dissect. Advancement of precise image division different image division strategies is utilized to take care of a particular issue. The motivation behind this survey is to give an overview of various image division methods. These methods are sorted into four sorts: an) Edge based division b) Threshold Segmentation c) Clustering-based division D) Region-based division. This survey tended to different image division methods, their correlation and presents the issues identified with those procedures.
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Computer Forensics and Image Deblurring: An Inclusive Investigation
Статья научная
Observed images with bare eyes are always different than the acquired ones using an imaging system since the captured images are considered as the degraded versions of the original scene. These degradations may vary between image noise, lighting defects and blur. Therefore, this article addresses the field of computer forensics with image deblurring as the latent details that are indeed present in the captured images are concealed due to the blurring artifact. Moreover, the constant types of blur that are being dealt with in forensics are the motion and the out-of-focus blur. The motion blur occurs due to the motion of the recorded objects or the camera during the capturing process. The out-of-focus blur occurs due to lens defocusing errors. Different examples are provided to focus on the importance of deblurring forensic images. In addition, concise commentaries on deblurring methods, applications and blur types are deliberated for additional knowledge.
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Computer Modeling and Simulations of Logic Circuits
Статья научная
In thе article are presented possibilities of computer modeling and simulations of logic circuits using the software CircuitMaker. CirciutMaker is one of the widely used software product for quick and easy synthesis and simulating the work of the various electronic circuits. By using CirciutMaker are created logical elements and synthesized logic circuits such as decoders, multiplexers, counters, programmable logic device, etc., that allow conducting computer simulations and experiments to solve specific experimental tasks. The work of the shown circuits is illustrated with the time-impulse diagrams. The application of the software product CirciutMaker for students who study the course "Analysis and synthesis of logic circuits" is also considered. The computer modeling and the simulations of logic circuits can be used in the lectures and in the laboratory exercises on the course "Analysis and synthesis of logic circuits" to conduct computer (virtual) interactive experiments.
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Computer Simulation Instruction: Carrying out Chemical Experiments
Статья научная
The purpose of this study was to investigate the effect of computer simulation Instruction (CSI) on students' achievements: Carrying out chemical experiments to acquire chemical concepts for eleventh grade students. The subject of the study consisted two sections of a one girl's high school in Jordan. One section was randomly assigned to experimental group in which computer simulation Instruction (CSI) was used, and the other section was randomly assigned to control group in which students were instructed by using the traditional teaching instruction. The findings indicated that there is progress on the part of the experimental group which used the computer simulation Instruction (CSI) and this was reflected positively in the students’ achievement in carrying out chemical experiments to acquire chemical concepts.
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Статья научная
The purpose of this research study is to examine the impact of Computer Studies among teachers and students of secondary schools in Umuahia North Local Government Area of Abia State, especially as it affects the teaching and learning process. The authors adopted a descriptive survey design for this study using four research questions which were formulated based on the purpose of the research. The results of the study indicate that Computer Studies has positive impact in the teaching and learning process in secondary schools in Umuahia North Local Government Area of Abia State, Nigeria. From the findings, the computer literacy level of the students was found to be low while that of the teachers was slightly higher than that of the students. The results of the study also show that equipment and infrastructure such as computers and other information and communication technology (ICT) facilities are also needed in schools to facilitate the acquisition of basic computer skills among teachers and students in secondary schools and thereby increase their computer literacy level.
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Computer science program in moroccan secondary schools: curricula analysis
Статья научная
The methodology of teaching informatics is a reflection subject that arouses increasing interest both locally and internationally. Debates on the curricula of the discipline are always at the center of many discussions amongst computer scientists and other concerned educators. Teaching Computer science in secondary schools is increasingly perceived as having similar status like teaching mathematics, life and earth sciences, chemistry, and physics. In this paper we report and analyze the current status of computer science education in Moroccan secondary schools in light of the governing official instructions by the ministry of education. We also discuss the generalization of computer education in Moroccan secondary schools probing the emergence of teaching it as a disciplinary subject rather than a tool in other fields. Our analysis shows that teaching informatics in Morocco is not conform to the set ministerial objectives and it necessitate a reform in both its teaching methodology and content.
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Computing the Bodies Motions in the Space and Long-term Changes in the Earth's Climate
Статья научная
The paper considers various aspects of the interaction and movement of bodies. The stability of the Solar system by the example of the evolution of the Mars orbit for 100 million years is shown. The optimal motion of the spacecraft to the vicinity of the Sun is considered. The results of an exact solution to the problem of the interaction of N bodies, which form a rotating structure, are presented. It is shown the evolution of two asteroids: Apophis and 1950DA, as well as ways to transform them into Earth satellites. The cause of the excess rotation of the Mercury perihelion is explained. The examples of the simulation of globular star clusters are given. As a result of the interaction of the bodies of the Solar System, the parameters of the orbital and rotational motions of the Earth change. This change leads to a change in the distribution of solar heat over the surface of the Earth. In contrast to the works of previous authors, a new understanding of the evolution of the orbital and rotational motions of the Earth has been obtained. In particular, it has been established that the Earth's orbit and its axis of rotation precess relative to different directions in space. The paper compares the distribution of the amount of the solar heat, i.e. insolation, on the surface of the Earth in different epochs. The insolation periods of climate change are shown. They coincide with the known changes of the paleoclimate. The changes in insolation for different time intervals, including for 20 million years ago, are given. Changes in insolation in the contemporary epoch and in the next million years are also shown. Sunrises and sunsets are also evolving. The duration of the polar days and nights in different epochs is given in the distribution by latitude. The paper popularly acquaints readers with the latest scientific results and is useful for students and graduate students to choose topics for their term papers and dissertations.
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Conditions on Structural Controllability of Nonlinear Systems: Polynomial Method
Статья научная
In this paper the structural controllability of a class of a nonlinear system is investigated. The transfer function (matrix) of nonlinear systems is obtained by putting the nonlinear system model on non-commutative ring. Conditions of structural controllability of nonlinear systems are presented according to the criterion of linear systems structural controllability in frequency domain. An example is used to testify the presented conditions finally.
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Contemporary Developments in Wireless Sensor Networks
Статья научная
Wireless Sensor Networks (WSN) since their inception, a decade ago, have grown well in research and implementation. In this work the developments in WSNs are reported in three sub areas of wireless sensor networks that is, wireless sensor node (hardware and software), Communication & Networking issues in WSNs and application areas. WSNs are characterized by huge data hence research work in aggregation & mining is also discussed. Contemporary issues of integration of WSNs with other prevalent networks, sensor enabled smartness and role of artificial intelligence methods is elaborated. Insight into future directions & research avenues in all the above areas is provided.
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Contemporary Trends in Defect Prevention: A Survey Report
Статья научная
Most of the software projects fail to meet the desired level of quality and standards due to different types of defects introduced during the course of requirement solicitation, designing and development. These defects inexorably hinder the secure deployment or smooth operations of the software systems. One of the key reasons for this misfortune is the lack of proper defect prevention planning while formulating the software architecture. Defect prevention needs to be a thorough and critical phase because it has a direct impact on quality of the product which cannot be compromised. This paper looks into different defect prevention techniques and analyses them critically. The scope of this study is restricted to the identification of the modern trends in defect prevention.
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Context-Aware Web Service Discovery Based on A Quantitative Similarity Measure
Статья научная
This paper presents a new context-based solution for Web services discovery. The service description includes an enriched representation, in order to make more efficient the discovery and selection stages. Our approach gives, services publishing and searching, another dimension. Services context-based selection uses a new quantitative similarity measure to calculate the correspondence degree between the client and the services contexts in order to provide users with appropriate services according to their contexts.
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Continuous delivery pipelines for teaching agile and developing software engineering skills
Статья научная
The amount of research reports on how to properly teach, in conjunction with technical topics, agile skills in undergraduate courses is a good indicator of how important are such skills in academy and industry nowadays. Such investigations have addressed challenges like how to engage students with agile principles and values without getting distracted by technology, or how to balance theory and practice to get students to meet learning objectives through practical experience. This paper intends to contribute to this research topic by describing new strategies for our particular needs for teaching agile in an introductory software engineering course, including better evaluation criteria for agile values and practices, and higher quality projects. The described strategies include a new approach for theoretical, laboratory, and project sessions arrangement, as well as a ‘Continuous Delivery Pipeline’ adapted to our educational context, with very promising results.
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Contours Matching with A Text-based Method
Статья научная
We propose in this paper a method to match silhouettes. Silhouettes are described with a text-based representation. An iterative process is used to reduce descriptors. When the size of a little part is negligible in relation with sizes of main parts, that little part will be considered as noisy and will be suppressed from the initial textual descriptor. After the reduction process, the descriptors can be compared in order to perform the matching process.
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Статья научная
High blood pressure is one of the diseases that most people suffer from, and it becomes a serious disease when it is not controlled precisely, especially during the surgical procedure. There must be anesthesiologists during the operation to monitor the pressure during the operation. It is not good and expensive, for patient safety and injection of the patient with the required dose, and it accurately requires an intelligent control to control the patient's pressure This paper presents nonlinear control system, to regulate the Mean Arterial Pressure (MAP) system. This controller is designed based on slate model that represent the mathematical equation that clarifies relationship between blood pressure and vasoactive drug injection. In this work Squirrel Search Algorithm (SSA) and Bacterial Foraging Optimization (BFO) are considered to optimize the controller parameters. Also nonlinear gain is used in PI-Id controller rather than fixed gain to make the controller much more sensitive to small value of error. Two algorithms applied to the controller to optimize its parameters to compare their results and determine which gives better results. The comparison results show best improvement when using the suggested controller based on SSA Algorithm. the results have no undershot with less (800s) settling time and low error.
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Cost Estimation of the Homogeneous Websites Using Hyper-links Analysis
Статья научная
Websites hide thousands of links and sub-links. Websites' links contain a huge amount of information and knowledge. This research concentrates mainly on the difficulty of early prediction of web structure size at the beginning of Website Development Life Cycle (WDLC), especially during planning and gathering requirements. There is a lack of finding an appropriate mechanism to assist developers in these steps. The objective of this research is to measure the logical size of a website in order to predict the development time and cost earlier before the development process based on based on the website contents and its internal structure. This objective includes three sub-objectives. First, analysis of seven classes of websites to collect real data sets. Second, extracting a set of relations from the gathered data and use these relations to establish a proposed model. Third, apply the gathered data in the proposed model to predict the development time and cost of a website. This research provides strong and important results that would help developers before the development process to predict total development time and cost which in turn used directly to specify development tools, draw project plan, formulate contract conditions and determine project duration and final price.
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