204 research outputs found

    A cryptographic cloud-based approach for the mitigation of the airline cargo cancellation problem

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    In order to keep in good long-term relationships with their main customers, Airline Cargo companies do not impose any fee for last minute cancellations of shipments. As a result, customers can book the same shipment on several cargo companies. Cargo companies try to balance cancellations by a corresponding volume of overbooking. However, the considerable uncertainty in the number of cancellations does not allow to fine-tune the optimal overbooking level, causing losses. In this work, we show how the deployment of cryptographic techniques, enabling the computation on private information of customers and companies data can improve the overall service chain, allowing for striking and enforcing better agreements. We propose a query system based on proxy re-encryption and show how the relevant information can be extracted, still preserving the privacy of customers\u2019 data. Furthermore, we provide a Game Theoretic model of the use case scenario and show that it allows a more accurate estimate of the cancellation rates. This supports the reduction of the uncertainty and allows to better tune the overbooking level

    Insertion Detection System Employing Neural Network MLP and Detection Trees Using Different Techniques

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    by addressing intruder attacks, network security experts work to maintain services available at all times. The Intrusion Detection System (IDS) is one of the available mechanisms for detecting and classifying any abnormal behavior. As a result, the IDS must always be up to date with the most recent intruder attack signatures to maintain the confidentiality, integrity, and availability of the services. This paper shows how the NSL-KDD dataset may be used to test and evaluate various Machine Learning techniques. It focuses mostly on the NLS-KDD pre-processing step to create an acceptable and balanced experimental data set to improve accuracy and minimize false positives. For this study, the approaches J48 and MLP were employed. The Decision Trees classifier has been demonstrated to have the highest accuracy rate for detecting and categorizing all NSL-KDD dataset attacks

    Intrinsic and extrinsic resistive switching in a planar diode based on silver oxide nanoparticles

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    Resistive switching is investigated in thin-film planar diodes using silver oxide nanoparticles capped in a polymer. The conduction channel is directly exposed to the ambient atmosphere. Two types of switching are observed. In air, the hysteresis loop in the current–voltage characteristics is S-shaped. The high conductance state is volatile and unreliable. The switching is mediated by moisture and electrochemistry. In vacuum, the hysteresis loops are symmetric, N-shaped and exhibit a negative differential resistance region. The conductance states are non-volatile with good data retention, programming cycling endurance and large current modulation ratio. The switching is attributed to electroforming of silver oxide clusters

    Development of a chemogenetic approach to manipulate intracellular pH

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    Chemogenetic Operation of iNTRacellular prOton Levels(pH-Control)is a novel substrate-based enzymatic method that enables precise spatiotemporalcontrol of ultralocal acidification in cultured cell lines and primaryneurons. The genetically encoded biosensor SypHer3s showed that pH-Controleffectively acidifies cytosolic, mitochondrial, and nuclear pH exclusivelyin the presence of beta-chloro-d-alanine in living cellsin a concentration-dependent manner. The pH-Control approach is promisingfor investigating the ultralocal pH imbalance associated with manydiseases.CE254SWXHI ; NN254SWPZX ; CP254SWT2

    Opto-electronic characterization of electron traps upon forming polymer oxide memory diodes

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    Metal-insulator-polymer diodes where the insulator is a thin oxide (Al2O3) layer are electroformed by applying a high bias. The initial stage is reversible and involves trapping of electrons near the oxide/polymer interface. The rate of charge trapping is limited by electron transport through the polymer. Detrapping of charge stored can be accomplished by illuminating with light under short-circuit conditions. The amount of stored charge is determined from the optically induced discharging current transient as a function of applied voltage and oxide thickness. When the charge density exceeds 8 1017/m2, an irreversible soft breakdown transition occurs to a non-volatile memory diode

    Planar non-volatile memory based on metal nanoparticles

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    Resistive switching properties of silver nanoparticles hosted in an insulating polymer matrix (poly(N-vinyl-2-pyrrolidone) are reported. Planar devices structures using interdigitated gold electrodes were fabricated. These devices have on/off resistance ratio as high as 103 , retention times reaching to months and good endurance cycles. Temperature-dependent measurements show that the charge transport is weakly thermal activated (73 meV) for both states suggesting that nanoparticles will not aggregate into a metallic filament

    Improving Knowledge, Attitude, and Perception towards Childhood Diarrhea Using Interactive Discussion in Kulon Progo Community

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    Introduction: Diarrhea is still a leading cause of death in the world in children, especially in children under 5 years. Diarrhea is a contagious disease with relatively high morbidity and mortality rates. Rotavirus is a cause of diarrhea in children and is a very important public health problem in both developed and developing countries. Parents' knowledge is one of the causes of diarrhea due to parents' ignorance of the causes of diarrhea, how diarrhea is transmitted and how to prevent diarrhea.Methods: This explanatory mixed qantitative-qualitative method with a quasi experimental design study to determine the effect of interactive discussion on changes in knowledge, attitudes, and perceptions towards the prevention and management of childhood diarrhea among mothers and children living in the area of The Ash-Shiddiqiyah Orphanage located in Central Sremo, Hargowilis, Kokap, Kulon Progo Regency, Yogyakarta.Results: The activities were conducted on November 29th, 2020 with 67 participants consisting of 54 children and 13 mothers from the area. The questionnaire results showed that the posttest scores in all sections (knowledge, attitudes, and perceptions) were significantly higher compared to the the pretest scores. There were increment of 1.33 points in knowledge (p<0.001), 0.5 points in attitudes (p<0.001),  0.4 points in perception (p<0.05), and 0.76 points in overall scores (p<0.001). Interviewees agreed that the intervention has been properly conducted with clear delivery, easy to understand for both adults and children, and ability to two-way communication. Technology utilization might help the understanding of the audience. Besides, a small group discussion in the session may benefit the participants to ask more confidently compared to asking in the middle of large group due to shame.Conclusion: Interactive discussion could be used to improve knowledge, atittude and perception towards childhood diarrhea. The delivery of interactive discussion using simple language for targetted population, adoption of small group discussion and technology utilization might help the effectiveness of the intervention. Further study is needed to identify effective ways to promote the childhood diarrhea management and prevention in community
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