High Institute For Computers and Management Information Systems

This study investigates a non-ideal magnetic levitation system (NIMLS) for energy harvesting, with particular emphasis on the influence of the oscillating core mass. The system is excited by an electrodynamic shaker, leading to strongly nonlinear oscillatory behavior governed by a coupled equation resembling the Duffing oscillator. Perturbation techniques are employed to analyze the system dynamics under the combined action of a negative velocity and negative acceleration controller (NVC+NAC), focusing on primary resonance and 1:1 internal resonance condition. Analytical solutions are derived to describe the system response, while MATLAB-based numerical simulations are used to validate the theoretical results. The stability of the system under primary resonance is examined using the Routh–Hurwitz criterion. Furthermore, the effects of structural constraints and system parameters on the dynamic performance of the primary system equipped with the NVC+NAC controller are investigated. A comparative analysis between analytical and numerical solutions confirms the accuracy of the perturbation-based approximations and demonstrates the effectiveness of the proposed controller in suppressing vibration amplitudes.

Intrusion detection on IoT data is challenging due to heterogeneous data, high dimensionality, and imbalanced attack distribution. We propose a hybrid ensemble framework with advanced preprocessing, to address these issues, and with a carefully curated set of high-performance classifiers. Feature selection is done using LightGBM. Dimensionality reduction is done using Principal Component Analysis (PCA), and SMOTE (Synthetic Minority Oversampling Technique) is used for class balancing. The four classifiers in the ensemble are Random Forest, Extra Trees, LightGBM, and XGBoost. These were chosen for their proven ability to capture nonlinear interactions, and to effectively work on sparse and high-dimensional data. Our model is tested using three benchmark datasets UNSW-NB15 and IoTID20 and BoTNeTIoT-L01-v2, and is shown to outperform existing ensemble-based approaches by a considerable margin with up to 100% accuracy on BoTNeTIoT and 99.6% accuracy on UNSW-NB15 and 99.84% on IoTID20. We also see that our results have improved reliability and generalization over existing approaches, and the results indicate that combining effective preprocessing with well-chosen classifiers can yield a strong model for IoT intrusion detection.

This investigation explores the effects of applying fuzzy time series (FTSs) based on neural network models for estimating a variety of spectral functions in integer time series models. The focus is particularly on the skew integer autoregressive of order one (NSINAR(1)) model. To support this estimation, a dataset consisting of NSINAR(1) realizations with a sample size of n = 1000 is created. These input values are then subjected to fuzzification via fuzzy logic. The prowess of artificial neural networks in pinpointing fuzzy relationships is harnessed to improve prediction accuracy by generating output values. The study meticulously analyzes the enhancement in smoothing of spectral function estimators for NSINAR(1) by utilizing both input and output values. The effectiveness of the output value estimates is evaluated by comparing them to input value estimates using a mean-squared error (MSE) analysis, which shows how much better the output value estimates perform.

Countries are keen to create large economic entities that obtain many of the gains they obtain as a result of the explosion of size and production specialization, which is based on achieving the relative value that each country enjoys from a bloc, which works to excel in the products of these countries and thus increase economic development services. Trade agreements are considered one of the most important goals of economic blocs, Opening markets for exports and increasing the relative and competitive capabilities of national products in a country is the goal of all countries, regardless of their systems. The problem of the study is that Egypt is involved in more than An economic bloc within the borders of the African continent (such as SADC - COMESA - IAAC), the main question of the study is: Does Egypt’s participation in economic blocs affect Egyptian economic growth? The study will address the patterns and flows of foreign trade between Egypt and the three African blocs The study concluded that the results of the gravity model for the IAAC bloc indicated that all variables, whether the GDP variable, the per capita GDP variable, the geographical distance, the common borders, or the common language, were statistically insignificant. As for the SADC and COMESA bloc, the results were significant, and the study recommended the necessity of Canceling Egypt’s membership in the IAAC bloc and strengthening foreign trade between Egypt, the SADC bloc and the COMESA bloc.

The paper dealt with the impact of sustainability reports in its three forms (the annual report on sustainability, the annual report of the board of directors and substantial disclosures about sustainability practices) through its various economic, environmental and social dimensions, in order to test the ability of these reports to improve the accuracy of financial forecasts in the Egyptian business environment. Local and international efforts related to sustainability reports, as one of the forms of voluntary disclosure in accordance with the rules of listing securities in the Egyptian Stock Exchange. From 2015 to 2019, the paper, by relying on the hierarchical multiple regression method, found the effect of the three reports on the accuracy of financial forecasts with the net profit of the sample items at the level (1%) compared to the impact of the annual sustainability reports and the annual report of the Board of Directors only on The accuracy of the predictions of the fair value of the shares of the sample items at the level (1%) with the ability to interpret it (40.3%) compared to (68.3%), respectively. The paper recommends the legislative bodies concerned with the development of corporate laws, the necessity of legislating new articles within those laws, regulating the process of sustainable development and disclosing sustainability within companies. Encouraging Egyptian companies to issue sustainability reports by offering a set of incentives through the regulatory authorities (the Egyptian Stock Exchange management) and the supervisory authorities (the Financial Regulatory Authority), in addition to professional bodies (such as the Egyptian Securities Association) as an annual award in the field of sustainability among companies listed on the Egyptian Stock Exchange.

This paper aims to study the effect of coronavirus pandemic on the performance 0f the financial market in the Egyptian Stock Exchange, Coronavirus spread has been measured by "Total cases, daily cases, Total deaths and Daily deaths" on daily basis. The dependent variable reflects the response of the Egyptian sectorial indicators to the spread of the Coronavirus and is measured by the returns of the daily sectorial indicators for the Egyptian stock market; this has been applied on daily basis over the period from March 1, 2020 till October 31, 2021. Results indicate that the returns of the stock market sectors seems to be more sensitive to total indicators of mortality than daily deaths from coronavirus, and daily cases more than total cases of coronavirus. The coefficient of determination between the independent variables and the variable belonging to 4 sectors is (IT, Media & Communication Services 0.393, Industrial Goods, Services and Automobiles 0.470, Health Care & Pharmaceuticals 0.327, Basic Resources 0.266), While the correlation coefficient and the coefficient of determination between the independent variables and the dependent variable reached strong correlation ratios for 13 sectors of the stock exchange.

Applying ISO 21001:2018 standard ensures that universities have a competitive advantage as well as the achievement of their objectives. This study aims to identify the impact of implementing ISO 21001: 2018 management systems standards on the performance quality of higher education institutions. The study investigates the reasons why private higher education institutions seek ISO standards certificates in general and the specifications of management systems for educational institutions in particular. The study applied a set of statistical testing methods on paired samples as well as independent samples to ensure quality assurance. The study also proposes the required prerequisites that should be considered. The study investigated a hypothesis stating that "there are no statistically significant differences before and after applying the ISO 21001:2018 management systems specification for educational institutions in improving the quality of performance in higher education institutions" which was rejected by conducting an experiment in Future University in Egypt and accepting the alternative hypothesis. The study confirmed the impact of quality which was previously investigated by prior research that has been discussed in this study. The study further presented the need to apply quality based on determined criteria which were not considered in prior studies. Moreover, the study proposed the impact of ISO standards in educational institutions in general and in Egypt in specific. This recommendation is proved by this study to enhance the quality level in educational institutions.

هدفت هذه الدراسة إلى الاستفادة من التعلم المدمج القائم على منصة مودل في تنمية تعلم قواعد اللغة الانجليزية کلغة أجنبية لدى طلاب و طالبات الفرقة الاولى شعبة نظم المعلومات الادارية بالمعهد العالي للحاسبات و المعلومات و تکنولوجيا الإدارة بطنطا و تکونت عينة الدراسة من (160) طالب و طالبة تم اختيارهم بطريقة عشوائية خلال الفصل الدراسي الثاني من العام الجامعي 2020/2021. و تم تقسيم العينة المختارة ( ن=160) إلى مجموعتين , أحدهما تجريبية ( ن=80) و هي التي تعرضت للمعالجة التجريبية و الاخرى ضابطة (ن=80) و هي التي لم تتعرض للمعالجة التجريبية, ومن أجل جمع البيانات قام الباحث بتصميم اختبارا تحصيليا في قواعد اللغة الانجليزية کلغة أجنبية و لقد استخدم الباحث المنهج شبه التجريبي و تم تطبيق ادوات البحث على المجموعتين قبل التجربة و بعدها و تمت معالجة البيانات إحصائيا باستخدام برنامج SPSS . و لقد خلصت نتائج الدراسة الى وجود فروق دالة إحصائيا بين متوسطى درجات المجموعتين التجريبية والضابطة لصالح المجموعة التجريبية. و في ضوء هذه النتائج تم تقديم التضمينات التربوية و التوصيات و أيضا المقترحات لا جراء بحوث مستقبلية. This study investigated the utilization of MOODLE platform-based blended learning in developing EFL grammar learning among EFL first year MIS students at Tanta Higher Institute for Computers, Information and Management Technology . The participants (N=160) were selected randomly during the second semester of the 2020-2021 academic year. They were assigned into an experimental and a control groups. The participants in the experimental group (N =80) were exposed to blended learning using MOODLE platform in which MOODLE platform supplemented face-to-face lectures for 10 weeks, whereas students in the control group (N =80) received class-based instruction ( face-to-face lectures only). The instrument used in the study, prepared by the researcher, was a pre-post EFL grammar test. Testing the two groups was administered before and after the experimentation. T-test for independent and paired samples was applied. Data obtained were logged and analyzed using SPSS, version 22 . Results revealed that students in the experimental group surpassed and outperformed students in the control group and blended learning using MOODLE platform had a positive impact on students’ EFL grammar learning . Pedagogical implications, recommendations, insights for further research and conclusions were provided in the light of the study results.

The Lomax distribution (or Pareto II) was first introduced by K. S. Lomax in 1954. It can be readily applied to a wide range of situations including applications in the analysis of the business failure life time data, economics, and actuarial science, income and wealth inequality, size of cities, engineering, lifetime, and reliability modeling. In his pioneering paper, Shannon 1948 defined the notion of entropy as a mathematical measure of information, which is sometimes called Shannon entropy in his honor. He laid the groundwork for a new branch of mathematics in which the notion of entropy plays a fundamental role over different areas of applications such as statistics, information theory, financial analysis, and data compression. [Ebrahimi and Pellerey 14] introduced the residual entropy function because the entropy shouldn't be applied to a system that has survived for some units of time, and therefore, the residual entropy is used to measure the ageing and characterize, classify and order lifetime distributions. In this paper, the estimation of the entropy and residual entropy of a two parameter Lomax distribution under a generalized Type-II hybrid censoring scheme are introduced. The maximum likelihood estimation for the entropy is provided and the Bayes estimation for the residual entropy is obtained. Simulation studies to assess the performance of the estimates with different sample sizes are described, finally conclusions are discussed.

This paper presents an extension to the predation model using the optimal control theory to obtain the optimal paths for the prey and predator levels for each type. These levels were represented as state variables for the optimal control problem, and also for the optimal paths for the levels of other prey and predator which were represented as control variables. In this direction, we will use the Maple program to solve the numerically controlled system based on nonlinear ordinary differential equations and using some constraints on the prey and predator numbers. The objective function is determined to reduce the lost numbers of all prey and predator at the end of the predation period to a minimum value in specific area. There are three different cases examined to reflect the effect of presence or absence the carrying capacity for the prey, and the effect of presence non-natural deterioration for the two species, and finally the effect of additional migration of two species.