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In this study, crack-free TiC/Ti composites with TiC content ranging from 0 to 15 wt.% were successfully fabricated using Direct Energy Deposition with a dual-feeder system that concomitantly delivered different amounts of both constituents into a high-power laser beam. The samples were investigated to evaluate the morphologies and distribution behavior of TiC. The microhardness values of the samples obtained under optimal processing conditions increased from 192 ± 5.3 HV0.2 (pure Ti) to 300 ± 14.2 HV0.2 (Ti + wt.% 15 TiC). Also, TiC has a significant impact on the Ti matrix, increasing the strength of TMCs up to 725 ± 5.4 MPa, while the elongation drastically decreased to 0.62 ± 0.04%. The wear rate is not proportionally affected by the rise content of TiC reinforcement; the hypoeutectic region of TMCs exhibited a wear rate of 2.45 mm3/N·m (Ti + wt.% 3 TiC) and a friction coefficient of 0.48 compared to the ones from the hypereutectic region, which measured a wear rate of 3.02 mm3/N·m (Ti + wt.% 15 TiC) and a friction coefficient of 0.63. The improved values of mechanical properties in the case of TMCs as compared to pure Ti are provided due to the solid solution strengthening of carbon and the fine grain strengthening. This work outlines a method for changing TiC morphologies to improve the hardness and tensile strength of TMCs fabricated starting from micro-scale powder. [ABSTRACT FROM AUTHOR]

Communication through GSM-5G networks represents a new stage in its development, the communication speed being about 100 times higher than in the case of 4G networks, but the transmission distances are small. So, these 5G networks will be implemented mainly in urban areas due to high costs. The paper aims to analyze scenarios for the impact of 5G networks on the background of accelerated technological development.

The current pandemic has put pressure on the area of innovation so that telework can be as widespread as possible. Teleworking lead to more changes about human resources, such areas were in demographic decline may reverse their trend and congested areas that were expanding demographic and can also to reverse demographic trend. Also, teleworking leads to the restructuring of the qualification of human resources and to a polarization of them. Thus we are witnessing a whole chain of changes in the structure of the economic system due to the virtualization of activities. Some questions that are being asked at the moment: Can the development given by the urban agglomeration be replaced by the virtualization of activities? Can the phenomenon of polarization of human resources in large urban agglomerations be reversed? And if so, with what consequences? This paper attempts to outline the trend dynamics of human resources in the context of innovation imposed by the pandemic.

The problems imposed by the physical distance between people and by the hygiene rules, change the structure of the tourism services. These services are in an interdependence with other services such as transport, cleaning or artistic services. The impact of the pandemic on this area can be for an indefinite period of time in some respects and reversible in others. This paper presents the main trends in tourism services and a possible structure of the future models.

Communication through GSM-5G networks represents a new stage in its development, the communication speed being about 100 times higher than in the case of 4G networks, but the transmission distances are small. So, these 5G networks will be implemented mainly in urban areas due to high costs. The paper aims to analyze scenarios for the impact of 5G networks on the background of accelerated technological development. [ABSTRACT FROM AUTHOR]

The problems imposed by the physical distance between people and by the hygiene rules, change the structure of the tourism services. These services are in an interdependence with other services such as transport, cleaning or artistic services. The impact of the pandemic on this area can be for an indefinite period of time in some respects and reversible in others. This paper presents the main trends in tourism services and a possible structure of the future models [ABSTRACT FROM AUTHOR]

The current pandemic has put pressure on the area of innovation so that telework can be as widespread as possible. Teleworking lead to more changes about human resources, such areas were in demographic decline may reverse their trend and congested areas that were expanding demographic and can also to reverse demographic trend. Also, teleworking leads to the restructuring of the qualification of human resources and to a polarization of them. Thus we are witnessing a whole chain of changes in the structure of the economic system due to the virtualization of activities. Some questions that are being asked at the moment: Can the development given by the urban agglomeration be replaced by the virtualization of activities? Can the phenomenon of polarization of human resources in large urban agglomerations be reversed? And if so, with what consequences? This paper attempts to outline the trend dynamics of human resources in the context of innovation imposed by the pandemic [ABSTRACT FROM AUTHOR]

Provision of adequate energy services in terms of quality, at acceptable prices, in terms of environmental compliance and security of supply, and in accordance with the requirements of economic growth is a vital component of sustainable development. Within the European Union the states are insisting on creating a single market in energy (in particular electricity and natural gas energy market, energies that are infrastructure network dependent). Hence, the emphasis must be focused on two different directions: • development of transmission and distribution networks; • institutional reorganization of the system, abolition of monopolistic structures, activities unbundling, establishment of regulatory authorities, etc. [ABSTRACT FROM AUTHOR]