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Supervisory Control and Data Acquisition (SCADA) is a typical OT (Operational Technology) system that uses computers, networked data communications and graphical user interface for process supervisory management. SCADA systems are managing industrial processes or mission-critical infrastructure, and most installations are not making use of cloud-based infrastructure. In this paper, we present different...
The elastic provisioning of Virtual Infrastructures (VIs) enables a dynamic management of cloud resources (computing and communication) in order to meet the hosted application's requirements. Thus, to perform elasticity requests, providers usually rely on reallocation mechanisms and policies. The concerns regarding the environment and the operational costs indicate energy consumption of the data centers...
In recent years, small and medium organizations have migrated to the cloud. Cloud computing provides information technology (IT) services, which can be found with Internet access from any place at any time. One can get services through application software like web browsers and mobile applications. Virtualization indicates the main concept to manage an IT infrastructure and data centers in the cloud...
This paper provides an attempt to solve the problem of restoring Linux processes tree during container live migration by creation a mathematical model describing operations, which are performed with container processes tree while container works. During live migration of the container, the state of each process in the container processes tree is saved and then the tree is restored on another node...
Since the year 2000, the up to 400 Volt Direct Current (400VDC) powering interface for Telecom and Datacenters equipment has been standardized and industrialized as it brings advantages. Compared to 48 Volt Direct Current power solutions, it uses much less copper and the energy losses in cable are lower. Compared to Alternating Current uninterrupted power supply (UPS) benefits are simplicity higher...
The document contains a comparative analysis of the key technologies to ensure collaboration of telecommunication networks that were built with using different versions of IP protocol: dual stack; tunneling and encapsulation; translation of the protocols. Two groups of factors are proposed: factors that will influence the choice of the technical migration way to the IPv6 stack and the factors that...
Today, the IT-infrastructures are widely used in various spheres of life. The advent of large Data Center(DC) has caused a problem of there resources management. One of this problem aspect is to allocate the DCs virtual machines(VMs) and load. Migration opportunity have added to the complexity of this problem. In this paper, the most used forecasting models are estimated with the aim of instrument...
With the incredible growth of OSNs (online social networks), users have numerous choices every moment. However, due to the limit of time and resources, only a small part of OSNs are chosen to remain social and active by users. The dynamic changes of users' interests entail user migration. Understanding user migration behavior is important to improve business intelligence and retain users. In this...
We address the topology-aware job scheduling and placement problems on 3D torus-based high performance computing systems, with the objective of reducing system fragmentation. In our previous work, we proposed a job placement algorithm based on a local migration process, which aims at reducing the internal fragmentation due to using a convex prism shape for job allocation. However, HPC systems are...
The increased number of cyber attacks makes the availability of services a major security concern. One common type of cyber threat is distributed denial of service (DDoS). A DDoS attack is aimed at disrupting the legitimate users from accessing the services. It is easier for an insider having legitimate access to the system to deceive any security controls resulting in insider attack. This paper proposes...
The feasibility of large-scale decentralized networks for local computations, as an alternative to big data systems that are often privacy-intrusive, expensive and serve exclusively corporate interests, is usually questioned by network dynamics such as node leaves, failures and rejoins in the network. This is especially the case when decentralized computations performed in a network, such as the estimation...
The presence of a huge amount unexploded ordnance devices (UXO) on the sea floor is one of the major problems during installation and maintenance of offshore wind farms and other offshore structures. To identify all targets, time and cost consuming campaigns are necessary. The clearance of UXO is often limited by time due to the idea that UXO can migrate on the sea floor. Therefore the UXO-measure...
The microservice architecture (MSA) is an emerging cloud software system, which provides fine-grained, self-contained service components (microservices) used in the construction of complex software systems. DevOps techniques are commonly used to automate the process of development and operation through continuous integration and continuous deployment. Monitoring software systems created by DevOps,...
This paper gives a mathematical framework for decision making around placing and migrating workloads in a data-center where applications are packaged as OS containers running on virtual machines. The decision point on VM migration vs container kill/restart, VM fork vs container spawn are studied here.
Distributed renewable power generation is a way to advancing affordable clean energy to remote locations far from the grid system. Solar energy is abundant everywhere across Africa hence socioeconomic life could be better with simple dispatchable distributed power infrastructure using cheaper, less complex DC systems and devices. People need to be empowered to reduce poverty, stop rural to urban migration...
A Virtual Data Center (VDC) is a set of virtual machines (VMs) connected by a Virtual Network (VN) topology. Today's cloud data centers support dynamic requests for VDCs, by using software defined embedding strategies thatallow them to mesh multiple VDCs onto their Physical Data Center(PDC) network and machines. In this paper, we present a solution to this VDC embedding problem that achieves a higher...
The analysis of the human migration process has been studied in various fields of science. This work, focuses on migration indicators proposed by the International Migration Policy, with the aim of identifying the most important indicator from the point of view of data mining. This study identifies migrant stock as the most important factor related to the values obtained by the F1Score and the ROC...
In the year of 2015 a serious mass of refugees arrived in Europe. In the second half of the year the daily number of the migrants started to increase rapidly and in few months vent up to 10,000. This huge, uncontrolled mass of people caused extreme administrative, humanitarian, border guard and police tasks to the involved countries. Hungary has started to build fences along its southern borders to...
On-demand computing, Software-as-a-Service, Platform-as-a-Service, and in general Cloud Computing is currently the main approach by which both academic and commercial domains are delivering systems and content. Nevertheless there still remains a huge segment of legacy systems and application ranging from accounting and management information systems to scientific software based on classic desktop...
Word2Vec is a class of neural network models that as being trainedfrom a large corpus of texts, they can produce for each unique word acorresponding vector in a continuous space in which linguisticcontexts of words can be observed. In this work, we study thecharacteristics of Word2Vec vectors, called API2VEC or API embeddings, for the API elements within the API sequences in source code. Ourempirical...
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