111 research outputs found

    Teaching Information Security Management in Postgraduate Tertiary Education: The Case of Horizon Automotive Industries

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    Teaching cases based on stories about real organizations are a powerful means of storytelling. These cases closely parallel real-world situations and can deliver on pedagogical objectives as writers can use their creative license to craft a storyline that better focuses on the specific principles, concepts, and challenges they want to address in their teaching. The method instigates critical discussion, draws out relevant experiences from students, encourages questioning of accepted practices, and creates dialogue between theory and practice We present ‘Horizon’, a case study of a firm that suffers a catastrophic incident of Intellectual Property (IP) theft. The case study was developed to teach information security management (ISM) principles in key areas such as strategy, risk, policy and training to postgraduate Information Systems and Information Technology students at the University of Melbourne, Australia

    Self-Consumption Evaluation for Grid-Connected Photovoltaic Systems Considering Ramp Rate Limit

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    Grid-connected rooftop photovoltaic (PV) systems are a promising solution to reduce electricity bills and support sustainable development in residential areas. Although excess PV power can be sold to the grid at attractive tariffs, premium feed - in tariffs have been discouraged in many countries. Instead, self-consumption policies have been encouraged to promote local generation and consumption. Rooftop PV systems are connected to the grid; thus, local grid codes are applied to maintain a stable and reliable system operation. A high PV power ramp rate (fluctuation) typically imposes several difficulties: voltage fluctuation problems and shorter electric appliance lifetimes. However, previous studies have failed to consider the PV power ramp rate limit when evaluating self-consumption. In addition, neglecting the ramp rate limit leads to a PV system with a lower self-consumption rate in practical implementation due to ramp rate limitations. Therefore, this study focuses on a self-consumption evaluation in grid-connected PV systems considering the ramp rate limit. A modified inverter-based ramp rate control method is considered to maintain PV power fluctuations within ramp rate limits. Several ramp rate limits are assigned to the ramp rate control method in a comparative study, where two scenarios are considered: low and high PV power fluctuations. The comparative results reveal that PV ramp rate limits positively affect the self-consumption rate but negatively affect the self-sufficiency rate

    Teaching Information Security Management Using an Incident of Intellectual Property Leakage

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    Case-based learning (CBL) is a powerful pedagogical method of creating dialogue between theory and practice. CBL is particularly suited to executive learning as it instigates critical discussion and draws out relevant experiences. In this paper we used a real-world case to teach Information Security Management to students in Management Information Systems. The real-world case is described in a legal indictment (T-mobile USA Inc v. Huawei Device USA Inc. and Huawei Technologies Co. LTD) alleging theft of intellectual property (trade secrets) and breaches of contract concerning confidentiality and disclosure of sensitive information. The incident concerns a mobile phone testing robot (Tappy) developed by T-mobile USA to automate testing of mobile phones prior to launch. Tmobile alleges Huawei stole the technology by copying the robot’s specifications and stealing parts and software to develop its own testing robot. The incident scenario is interesting as it relates to a business asset that has both digital and physical components that has been compromised through an unconventional cyber-physical attack facilitated by insiders. The scenario sparked an interesting debate among students about the scope and definition of security incidents, the role and structure of the security unit, the utility of compliance-based approaches to security, and the inadequate use of threat intelligence in modern security strategies

    Modeling of Photovoltaic System with Modified Incremental Conductance Algorithm for Fast Changes of Irradiance

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    International audienceThe first objective of this work is to determine some of the performance parameters characterizing the behavior of a particular photovoltaic (PV) panels that are not normally provided in the manufacturers' specifications. These provide the basis for developing a simple model for the electrical behavior of the PV panel. Next, using this model, the effects of varying solar irradiation, temperature, series and shunt resistances, and partial shading on the output of the PV panel are presented. In addition, the PV panel model is used to configure a large photovoltaic array. Next, a boost converter for the PV panel is designed. This converter is put between the panel and the load in order to control it by means of a maximum power point tracking (MPPT) controller. The MPPT used is based on incremental conductance (INC), and it is demonstrated here that this technique does not respond accurately when solar irradiation is increased. To investigate this, a modified incremental conductance technique is presented in this paper. It is shown that this system does respond accurately and reduces the steady-state oscillations when solar irradiation is increased. Finally, simulations of the conventional and modified algorithm are compared, and the results show that the modified algorithm provides an accurate response to a sudden increase in solar irradiation

    AN APPROACH TO IDENTIFICATION OF FACTORS AND RESOLUTION OF UNDERLYING POVERTY AND ECONOMIC INTEGRATION IN DEVELOPING COUNTRIES

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    The majority of people living in developing countries are seriously constrained due to their limited access to education, health and even very basic facilities of living peacefully. Since long all the efforts to alleviate poverty among poor people has not shown any significant betterment. However, beside poverty these countries are confronted with devastating differential between poor and rich in various capacities. As professionals we started realizing that most of the national and international welfare organization of the world is convinced that the poverty and income inequality in various forms is causing human suffering in almost every country in the world. Even Obama former President of United States of America recognized that this being a growing concern for the society’s economic wellbeing. Unexpectedly we see a small section of the society in such countries holds power and authority to rule the masses to safeguard their own private interest. It is obvious that the poor countries with ample human resources can be the major benefactors of the provision of income equality if dominance of the ruling class is wiped out. This research paper provides a kind of approach, which points out more adoptable option for creating self-supporting force of poor people to stand on their own for dignified living.&nbsp

    Optimization of photovoltaic energy by a microcontroller: Arduino Solar Tracker

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    International audienceOne of the major challenges of all nations today is to find new energy sources to meet the needs for continued growth in Energy Term. The conversion of sunlight into electricity via photovoltaic solar cells is becoming a necessity in particular through the observation of a global evolution in clean energy that respects the environment. The main challenge is to optimize as much as possible the cost / energy ($/watt) ratio thus boosting both energy performance and at the same time take full advantage of the sun's rays throughout the day.In this context the sun trackers are such devices for efficiency improvemen

    Une ressource pédagogique pour l'enseignement par simulation : cas des panneaux photovoltaïques

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    International audienceThe aim of this paper is to present an educational approach in order to teach photovoltaic (PV) panels at different levels of education (high school, bac + 2, bac + 3, bac + 5), that for institutions that have a problem of didactic benches unavailability or who cannot afford to buy them, this using low cost prototyping and modeling / simulation tool (PSIM and MATLAB / SIMULINK). In addition, this paper shows how to use these tools in order to approximate the purpose of the training for each level. This work could also be a tutorial on which young researchers in the field of PV panels can rely to simulate a PV panel in different ways.L'objectif de cet article est de présenter une approche pédagogique dédiée à l'enseignement des panneaux photovoltaïques (PV) aux différents niveaux d'études (lycée, bac+2, bac+3, bac+5), ça pour les écoles qui ont un problème de manque de matériels ou qui n'ont pas les moyens pour les acheter, ceci en utilisant des logiciels de prototypage et de modélisation/simulation à coût réduit (PSIM et MATLAB/SIMULINK), en plus cet article montre aussi comment utiliser ces logiciels afin d'atteindre approximativement l'objectif de la formation pour chaque niveau d'étude. Cet article pourra être aussi un tutorial sur lequel les chercheurs débutants dans le domaine des panneaux photovoltaïques peuvent se baser pour simuler un panneau PV avec différentes façons. Mots-clés—Approche pédagogique; tutoriel; Panneaux PV; Psim; Matlab/Simulin

    Modeling of Photovoltaic Panel by using Proteus

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