AGH (Akademia Górniczo-Hutnicza) University of Science and Technology: Journals
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Energy Efficient and QoS Aware Trustworthy Routing Protocol for Manet Using Hybrid Optimization Algorithms
Full text linkThe potential for wireless mobile computing applications has significantly increased in recent years thanks to advancements in wireless communication and internet service technology. A collection of mobile nodes that can be randomly arranged and created without the aid of any pre-existing network architecture or centralised administration is known as a Mobile Ad hoc Network (MANET). Mobile devices in this network rely on battery power, so it\u27s critical to reduce their energy usage. Furthermore, communication with them is difficult due to their susceptibility to several security risks. As a result, the research suggested a reliable routing protocol that is both energy-efficient and QoS-aware. Levy Flight-centred Shuffled Shepherd Dynamic Source Routing (LF-SSO-DSR) protocol is used in the route discovery scheme\u27s first stages to find the best way out of a group of options chosen based on QoS criteria. Additionally, hybrid Firefly and Whale Optimization Algorithms (FFWHO) are used to handle high energy consumption and discover the ideal values and fit function for the goal parameter (i.e., energy). WOA conducts a global search, but later on, in the algorithm, it conducts a local search, which can successfully find the routing path that complies with the QoS requirements. The security challenges in MANETS present the most difficult assignment. The reliability of each mobile node is assessed by taking into account factors such as the node\u27s location, mobility speed, energy use, number of involved transmissions, neighbour list, etc. The research project then suggested the Intelligent Dynamic Trust (IDT) paradigm as a means of supplying security in wireless networks. For secure routing in mobile ad hoc networks, this paradigm combines beta reputation trust and dynamic trust. Network Simulator 3.36 software was used to conduct the performance analysis. Several performance metrics, including throughput, energy consumption, packet delivery ratio, jitter, end-to-end delay, packet loss rate, detection rate, and routing overhead, are used to assess the suggested approach. This outcome shows that the suggested strategy works better than other cutting-edge approaches respectively
The evolution of the moraine complex in the Fiescher Valley (Berner Alps, Switzerland) in the light of Schmidt-hammer exposure-age dating and sedimentological analysis
Full text linkThe sediment-landform assemblages preserved in many alpine valleys record glacier fluctuations during the latest Pleistocene and Holocene, encompassing the moraines formed during the Egesen stadial as well as Early Holocene and Neoglacial advances. This paper is concerned with the moraine evolution in the Fiescher Valley, a relatively large glaciated alpine valley system in the Berner Alps, which hosts the fourth-largest glacier in the Alps. A geomorphological and sedimentological analysis, supplied with Schmidt-hammer exposure age-dating, was used on the preserved moraine sequence along a 7-kilometre section of the valley. Calibrated Schmidt-hammer weathering results provide evidence of the multiphase glacier readvances of the Fischer glacier during the Younger Dryas and Early Holocene. The exposure age of Holocene boulders strongly differs with the time of moraine formation as a result of the incorporation of more weathered boulders that originated by earlier glacier fluctuations and rockfall activity. We thus infer that the previously formed Middle Holocene moraines were overridden by the much more extensive LIA advance. Sediment transport pathways in the Fiescher Valley were dominated by subglacial active erosion and transportation pathways of massive crystalline rocks, discernible via the large proportion of subrounded and subangular clasts. We found that significant and multiple glacial remodelling is arguably the most efficient way to reduce the initial platy shape of granitic and gneiss clasts, but a dependence between clast form and roundness with distance is hardly visible
An E-sourcing Platform for Improving Communication and Optimizing the Supply Chains of Textile Companies
No full textThe news predicted that all areas would have experienced significant disruptions from the start of the COVID-19 health crisis. At the economic scale of manufacturing companies, supply chains have been much more disrupted, which has often been justified by delays in delivery schedules. The results were considered to be harmful and had a negative influence on productive systems. By choosing the textile sector, our study began with an analysis of the information and communication systems of a limited number of companies; from the results of this analysis, we concluded that the fragility of these systems was the reason for the inabilities of certain supply chains to maintain their stability during the crisis. So, the solution to remedy this type of problem was to propose an e-sourcing platform that connects all of the companies that are active in this sector and those who are in direct contact with them to create a web network where the procurement procedures are similar – starting with the search for suppliers, and going as far as signing contracts online with a view of this research
Public open spaces and geotourism development in Pokhara metropolitan city, Nepal
Full text linkPublic open spaces (POS) are an integral part of the built-up area. They provide a platform for local as well as foreign visitors for recreation, socialization, and stimulation in a diverse environment. POS is a site with unique and attractive geological, geomorphological, landscape and socio-cultural environments are used for geotourism development. This paper discusses the developmentof geotourism in public open spaces in Pokhara Metropolitan City (PMC) and analyzes the perception of visitors towards the provisions of the particular POS. This study has applied an exploratory research design while primary information was obtained from a field observation with a checklist and patch visitors’ related records from POS. Similarly, visitors’ opinions were obtained through a structured questionnaire. Out of 277 public open spaces so far mapped in PMC, more than 70 patches have a potential for geotourism development and, 18 public open spaces are developed as sites of geotourism. However, only seven of them are managed systematically with the provision of formal institutions collecting revenue from visitors’ entry fees. Regarding the visitor’s satisfaction towards the development and facilities, about 23% of visitors are highly satisfied and another 38% are satisfied. Patches described as highly satisfied are more developed and have more visitors. The annual revenue of these seven POS also confirms that proper development of other POS as geotourism destinations, will further contribute to the economic prosperity of PMC. Moreover, its surrounding areas will have higher prospects of developing as global geopark
Economic analysis model for lithium production by Direct Lithium Extraction (DLE) method from a single well
Full text linkThe article presents an economic model enabling the assessment of the profitability of lithium extraction using the direct lithium extraction (DLE) method from geothermal brines from a single well. The model enables a preliminary simplified assessment of the profitability of DLE projects, which can be helpful in selecting the optimal locations for such projects and drilling production wells. The article also presents the critical role of lithium as a raw material for the decarbonization of the world economy, methods of its extraction and the economic prospects of the market for this raw material. It also presents exemplary DLE projects in the world
PRELIMINARY STUDY ON ARTIFICIAL INTELLIGENCE METHODS FOR CYBERSECURITY THREAT DETECTION INCOMPUTER NETWORKS BASED ON RAWDATA PACKETS
Full text linkMost of the intrusion detection methods in computer networks are based ontraffic flow characteristics. However, this approach may not fully exploit thepotential of deep learning algorithms to directly extract features and patternsfrom raw packets. Moreover, it impedes real-time monitoring due to the neces-sity of waiting for the processing pipeline to complete and introduces depen-dencies on additional software components.In this paper, we investigate deep learning methodologies capable of de-tecting attacks in real-time directly from raw packet data within network traffic.Our investigation utilizes the CIC IDS-2017 dataset, which includes both benigntraffic and prevalent real-world attacks, providing a comprehensive foundationfor our research
Czy w Polsce będą dwie mniejszości białoruskie? Wzajemne relacje i postrzeganie mniejszości białoruskiej i imigrantów z Białorusi
Full text linkW analizach sytuacji mniejszości narodowych rzadko uwzględnia się relacje między mniejszością narodową a społecznością imigrancką należącą do tego samego co mniejszość ethnosu. W artykule podjęto ten wątek w odniesieniu do mniejszości i imigracji białoruskiej w Polsce. Te dwie społeczności należące do jednej społeczności diasporycznej różnią się od siebie językowo, religijnie, poziomem świadomości narodowej i pamięcią historyczną. Każda tworzy własne organizacje i fundacje skierowane najczęściej do „swoich”. Czy stworzą w przyszłości jedną społeczność, czy przeciwnie, różnice między obiema społecznościami będą się utrzymywać prowadząc do współwystępowania dwóch społeczności białoruskich w Polsce? W artykule podjęto próbę odpowiedzi na to pytanie, odwołując się do wyników pilotażowego badania wśród liderów mniejszości i aktywistów imigranckich zrealizowanego w 2023 i 2024 roku na Podlasiu.
In analyses of the situation of national minorities, the relationship between a national minority and an immigrant community belonging to the same ethnos is rarely considered. This article addresses this issue in relation to the Belarusian minority and Belarusian immigration in Poland. These two communities, both part of the same diasporic group, differ in terms of language, religion, level of national consciousness, and historical memory. Each forms its own organizations and foundations, primarily aimed at its own members. Will they form a single community in the future, or will the differences between them persist, leading to the coexistence of two separate Belarusian communities in Poland? The article attempts to answer this question by referring to the results of a pilot study conducted among minority leaders and immigrant activists in 2023 and 2024 in the Podlasie region
The reconstruction of river system pollution changes with metals in shallow floodplain water reservoirs during the onset of the post-industrialisation period
Full text linkTowards the end of the 20th century, Poland’s economy experienced a transformation in terms of its industry and increasingly stringent environmental requirements. Together, these resulted in the general improvement of the quality of the aquatic environment. The Chechło River catchment is an example of such changes, where the closure of many industrial plants (including a zinc-lead [Zn-Pb] mine), the reclamation of several hot spots and the extension of sewage treatment contributed to a general decline in sediment pollution with Zn, Pb and Cd. The aim of the investigations was to evaluate the rate of these changes in order to assess the river recovery rate to the pre-industrial pollution level. The research involved the comparison of sediment pollution in subsidence reservoirs from two different eras: the peak of pollution and the post-industrial era. We observed a decrease in sediment pollution, mostly influenced by the closure of the Zn-Pb mine in 2010, despite many sources being closed or mitigated at that time. The change in sediment pollution was very well observed in the younger reservoir of the post-industrialisation period which is an efficient trap for sediments transported since ca. 2007. Considering that the sampling took place less than 10 years after the closure of the mine, we could regard the 3–4-fold drop as a rapid change. In older reservoirs, which were active already during the period of peak river pollution but connected with the river only by narrow ditches, changes in sediment pollution were minor. Pollution changes expected in the future will be much slower because the supply of pollutants from diffuse sources has dispersed in the prevailing part of the catchment
