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51.
Internet traffic surveillance & network monitoring in India : case study of NETRA
Rajan Gupta, Sunil K. Muttoo, 2016, izvirni znanstveni članek

Opis: Internet traffic surveillance is gaining importance in today’s digital world. Lots of international agencies are putting in efforts to monitor the network around their countries to see suspicious activities and illegal or illegitimate transmission of messages. India, being a center of attraction for terrorist activities, is also working towards the development of such surveillance systems. NETRA or Network Traffic Analysis is one such effort being taken by the Indian Government to filter suspicious keywords from messages in the network. But is it good enough to be used at the highest level for security analysis or does the system design needs to be improved as compared to other similar systems around the world; this question is answered through this study. The comparison of NETRA is done against Dish Fire, Prism, and Echelon. The design of the NETRA scheme and implementation level analysis of the system shows few weaknesses like limited memory options, limited channels for monitoring, pre-set filters, ignoring big data demands, security concerns, social values breach and ignoring ethical issues. These can be covered through alternate options which can improve the existing system. The Inclusion of self-similarity models, Self-Configuring Network Monitoring, and smart monitoring through early intrusion detections can be embedded in the architecture of existing surveillance system to give it more depth and make it more robust.
Ključne besede: cyber attacks, NETRA, network monitoring, network traffic analysis, surveillance system, spy system
Objavljeno v RUNG: 01.04.2021; Ogledov: 1972; Prenosov: 55
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Observational evidence in favor of scale-free evolution of sunspot groups
Alexander Shapoval, Jean-Louis Le Mouël, M. Shnirman, Vincent Courtillot, 2018, izvirni znanstveni članek

Ključne besede: sunspots, sun, magnetic fields, data analysis
Objavljeno v RUNG: 23.03.2021; Ogledov: 2084; Prenosov: 56
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Studying TDEs in the era of LSST
Katja Bricman, Andreja Gomboc, 2019, objavljeni povzetek znanstvenega prispevka na konferenci

Ključne besede: The observing strategy with continuous scanning and large sky coverage of the upcoming ground-based Large Synoptic Survey Telescope (LSST) will make it a perfect tool in search of rare transients, such as Tidal Disruption Events (TDEs). Bright optical flares resulting from tidal disruption of stars by their host supermassive black hole (SMBH) can provide us with important information about the mass of the SMBH involved in the disruption and thus enable the study of quiescent SMBHs, which represent a large majority of SMBHs found in centres of galaxies. These types of transients are extremely rare, with only about few tens of candidates discovered so far. It is expected that the LSST will provide a large sample of new TDE light curves. Here we present simulations of TDE observations using an end-to-end LSST simulation framework. Based on the analysis of simulated light curves we estimate the number of TDEs with good quality light curves the LSST is expected to discover in 10 years of observations. In addition, we investigate whether TDEs observed by the LSST could be used to probe the SMBH mass distribution in the universe. The participation at this conference is supported by the Action CA16104 Gravitational waves, black holes and fundamental physics (GWverse), supported by COST (European Cooperation in Science and Technology).
Objavljeno v RUNG: 04.01.2021; Ogledov: 2684; Prenosov: 0

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ASSESSMENT OF THE FEASIBILITY OF A MOBILE APP AIMED FOR THE PROMOTION OF A COMPANY
Hao Jiang, 2020, diplomsko delo

Opis: For a newly established company, one of the most important issues is to promote its own products and/or services. How to survive among many competitors is a problem, which is worthy of attention. With the popularity of mobile devices, the networks, information and digital society has been established, where global e-commerce has been improved and developed. In this society, for a new company it is highly desirable to use e-commerce promotion methods, which include making a mobile application. However, there is still an open question whether a mobile app can be used as an efficient e-commerce promotion method. In this thesis first an app has been developed for connecting the users and suppliers of musical instruments. All the users are able to share their homemade videos while playing musical instruments and exchange thoughts with all the users. At the same time, all the musical instruments related products can be merchandized between the users and merchant. Then we addressed two issues after the app has been tested: 1. For a startup, is it worth developing a product-related app? 2. In the process of using the app, what kind of attitude is the user taking on the internal product advertisement? An experiment has been set up in which 30 participants were randomly selected. Their behavior has been monitored for one month and the obtained data have been analyzed. The main result of the analysis is that 70% of the participants believe that developing an app brings certain benefit to the company. The remaining 30% of the participants think that they would love to continue to use the app after the experiment. At the same time, they have a certain interest in product advertising in the app.
Ključne besede: Android smartphone app, company promotion, e-commerce, sampling analysis, app development.
Objavljeno v RUNG: 28.10.2020; Ogledov: 3457; Prenosov: 89
.pdf Celotno besedilo (918,26 KB)

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Characterisation of microbunching instability with 2D Fourier analysis
Brynes AD, Giovanni De Ninno, 2020, izvirni znanstveni članek

Ključne besede: Microbunching instability, Fourier analysis
Objavljeno v RUNG: 27.10.2020; Ogledov: 2598; Prenosov: 0
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