International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

This paper is devoted to some up-to-date computational tools, which are on-line available and appropriate to remote learning as well as to scientific research implementation relevant to mathematics and their applications.
The following aspects are concerned and discussed: some of the opportunities and benefits afforded by the software tools which are taken into consideration; necessary requirements which have to be met in order to use these tools; some disadvantages and drawbacks which may arise.
Comparison of fees and prices for different mathematical software tools is done.
For purpose of illustration realistic examples are also given.

Virtual Private Networks (VPN) enable usage of the public Internet infrastructure to build se-cure and reliable connections providing functionally of private corporate IT networks. Back in 90s VPN were created to mainly allow access to corporate resources for employees who work remotely and/or travel. Today, VPN can be used to gain access to geographically isolated and highly protected Internet resources like websites, interactive platforms and more. Such VPN are good for protecting Internet users’ privacy and enhance their security especially when using public free Wi-Fi networks. Indeed, now VPN are used more and more and gain popularity for exactly those reasons – provide almost universal access and protect privacy of millions Internet users. This paper reviews building blocks and procedure to build our own VPN. This way power users are in full control of their privacy and security when using public Internet infrastructure while also gain access to otherwise restricted online resources.

Industry analysts are predicting that the next decade of innovation, productivity and growth in manufacturing will be driven by the demand for mass customization and the convergence of technologies that will enable a new generation manufacturing IT platform for “smart manufacturing” which includes advances in connected factory automation, robotics, additive manufacturing, mobile, cloud, social, and digital 3D product definition. The new generation of smart machines for manufacturing will have on board computers that will directly support internet protocols and direct communication with enterprise applications. Cloud computing is one of the technology stacks of Smart manufacturing and a service delivery model that is opening new opportunities for manufacturers. This paper describes what is “Smart manufacturing” that goes beyond smart machines, Industrial Internet of Things (IIoT) and Industry 4.0 and explores how cloud computing can help achieve Smart Manufacturing goals to optimize processes inside the factory.

The cloud computing environments are cost and productivity efficient, they are quickly replacing the traditional centralized systems. These “clouds” inherit a lot of security concerns of the older systems, but also bring the new ones. This paper examines 3 most popular cloud vulnerabilities, as well as a vulnerability intrinsic to the cloud environments. It proposes solutions and classifies the risks.

The idea of smart cities is timely considering that urbanisation is inevitable. While smart city as a concept has gained popularity over the past few years, there is vagueness in the definition, as multiple aspects including governance, public transport and traffic, waste management, entertainment and safety among others, need to be considered.

Europe is among the most urbanised regions on the globe. It is estimated that by 2020 around 80% of Europeans will be living in urban areas, in several countries the proportion will be 90% or more. As we continue to magnetise towards urban hubs we need smart cities – places where networks and services are made more efficient with the use of digital and telecommunication technologies for the benefit of inhabitants, businesses and the environment. The EU is trying to ensure that smart solutions for cities can be explored, implemented and replicated.

The present paper defines some of the aspects of the smart city as safety as well as specific models of smart and safe city will be discussed.

The report discusses common problems associated with the automation of scientific and engineering computations, as well as promising approaches to solving these problems, based on cloud computing models. The use of service-oriented approach in scientific and engineering computing can improve the research productivity by enabling publication and reuse of computing applications, as well as creation of cloud services for automation of computation processes. An implementation of this approach is presented in the form of Everest cloud platform which supports publication, execution and composition of computing applications in a distributed environment.

We present a software system that tunes configuration parameters of an algorithm. Parameters are tuned to minimize the solving time for a set of problems. SCIP is a mixed integer programming solver developed at Zuse Institute Berlin. The solver has more than 1500 configuration parameters. Most of the parameters are related to the solution process, others apply to solver’s input/output. There are both discrete and continuous parameters. Our system modifies parameters one by one to find ones having the most impact on the solving time. Then combinations of the best parameter values are evaluated. This approach implies that a great amount of solver runs is needed: 1-2 values of every parameter multiplied by the number of parameters multiplied by the number of test problems. Thus we employ a public cloud to create a temporary computational cluster for faster processing. The paper presents an overview of the system, a method to measure algorithm’s performance in the cloud and numerical results of system’s use on several problem sets.

The purpose of this article is to study and analyze the security threats in cloud environment and the applicability of cryptographic systems to protect the access to information resources. The threats to information security and the corresponding means for protection in cloud environment are discussed. Based on research and analysis of asymmetric and symmetric encryption are proposed flowcharts for secure communication over the Internet when using cloud services. The speed of different encryption and decryption of algorithms in cloud environment is measured, and are given recommendations for improving security.

Near Field Communication (NFC) technology is the future of m-Commerce, which has found possible application in contactless cards and mobile phone devices. NFC is technologically integrated with Data Ware House infrastructure and Cloud computing system which are incorporated in the e-Smart Business system. As a product of the implementation of NFC technology in m-Commerce business models there is a need of expansion B2B2C business model towards integration of services with the aim of creating new products, markets and consumer needs tuning. This paper presents a business model called e-Smart-Business as a system integration concept of m- Commerce through direct marketing and market research with the Data Ware House and Cloud computing systems.

The adoption of new technologies in organizations requires a preliminary assessment of risks, pro and cons of the planned change (SWOT analysis and change management). This paper acknowledges the important changes which are occurring in the security of the ICT systems in the organizations as a consequence from the transfer to the cloud services.

Traditionally, IT is positioned behind the firewall of any organization and all servers, virtualized or not, are specific as a service for any business. The authority which supports the security systems could choose the components for security among multiple proved products – firewalls, antivirus systems, servers, updates management, proxy servers, etc. In this way is guaranteed the high level of control upon the security of IT environment and the requirements of different standards for security.