Search

The problem of information security in wireless sensor networks is considered in this paper. An analysis of existing recommendations for information security in wireless sensor networks. It was found that one of the key problems of information security is the hardware limitations of the sensor nodes of the network. It is substantiated that the use of more complex cryptographic protection mechanisms will increase the load on the network. Safety requirements and their description are given. The main groups and types of information security threats in wireless sensor networks are considered. The classification of attacks and protection of wireless sensor networks according to the OSI model is presented. The existing solutions for information security are considered and analyzed. The shortcomings and vulnerabilities of the considered solutions are revealed. The method of public key cryptography is considered, the main advantages and disadvantages of this method are revealed. The analysis and comparison of ECC and RSA encryption methods are carried out. It is substantiated that the use of ECC in wireless sensor networks is more efficient than RSA. The method of cryptography with a symmetric key is considered, the main advantages and disadvantages of this method are indicated. It was found that cryptographic methods using a symmetric key are more priority for use in wireless sensor networks. Cryptographic key management protocols in wireless sensor networks are considered. The classification of key management protocols is given. Secure routing protocols are considered. The classification of secure routing protocols is given. Methods of secure data aggregation are considered. Contradictions between the requirements for confidentiality and data aggregation have been revealed. The method of intrusion detection is considered, the main advantages and disadvantages of this method are revealed. The results of this work should be used in the design of wireless sensor networks.

In the conditions of global digitalization of business, which influence on the competitiveness of entrepreneurs, on complete regions and national economies, it is of great importance to implement graduates career strategies. In the paper authors offer the approach of development a successful graduates career strategy, aimed in the systematic implementation of the formation of professional competences of young people.

The article considers the main trends in the development of the Fourth Industrial Revolution, which will lead to changes in the workplace, business and human resource requirements. The aim of the article is to analyze global changes in the field of employment and job changes and to identify key skills that are in demand for the development of the Ukrainian economy. The study showed that Ukrainian companies do not have a clear vision of the needs of professionals and the necessary skills they must have. This is due to the fact that companies do not engage in strategic planning and do not develop scenarios for their business development. The heads of Ukrainian companies indicate the unwillingness of graduates to perform professional tasks in the workplace. There is a significant gap between the desired skills (on the part of employers) and the skills that young people have. Therefore, the paper substantiates the need to stimulate the integration of business and education, which will allow Ukraine to create new form of cooperation or to develop existing ones. These results can be used in universities, schools or other educational institutions and organizations to develop curricula as well as in business for the formation of training programs and adaptation of new employees.

This paper examines fundamental trade-offs in fault-tolerant distributed systems and replicated databases built over the Internet. We discuss interplays between consistency, availability, and latency which are in the very nature of globally distributed computer systems and also analyse their interconnection with durability and energy efficiency. In this paper we put forward an idea that consistency, availability, latency, durability and other properties need to be viewed as more continuous than binary in contrast to the well-known CAP/PACELC theorems. We compare different consistency models and highlight the role of the application timeout, replication factor and other settings that essentially determine the interplay between above properties. Our findings may be of interest to software engineers and system architects who develop Internet-scale distributed computer systems and cloud solutions.

Purpose. Acceleration of scientific and technological progress pace, strengthening of informatization and labor intellectualization processes, considering person as the most valuable resource allowed determining innovative development as a key factor in ensuring economic and social stability of the country, its competitiveness in the international arena. In recent years, the demographic situation, which is associated with an increase in the share of elderly people in general structure of the population, is being increasingly influenced both by the innovative development of Ukraine and the whole world. The purpose is to study positive and negative consequences of increasing the number of elderly people in general structure of population and their impact on innovative development of the Ukrainian economy. The subject of the study is formation of human resources of innovative activity under the influence of demographic situation. Design/methodology/approach. The study uses systematic and procedural approaches, functional and target, abstract and logical methods. Research limitations/implications. The scientific significance lies in establishing relationship between the change in the population structure and economic and social situation in Ukraine. Findings. The conclusion is based on the importance of population’s ageing problem recognition by the state and development of measures to minimize negative impacts. Originality/value. Practical significance of the study results is that the influence of negative and positive factors of ageing on the country’s economic growth should be the basis for elaboration of updated programs to stimulate the elderly to increase their role in country’s economic and social life. As a result, this will promote Ukraine’s innovative development, social and economic growth and increase its competitiveness.

The purpose of this article is to highlight such concepts as high corporate, description of the motivational complex for building a highly effective culture, consideration of international practice in building a highly effective corporate culture, and report on the changes in corporate culture in the Ukrainian IT company. Methodology. The general scientific methods of cognition of economic phenomena and processes in their continuous development and interrelation are used in the work: logical analysis, methods of scientific abstraction, induction, deduction, optimization, grouping. Results. The main research in the field of motivating employees and building a corporate culture is systematized, the analysis of these exercises and methods is carried out, and the data received by scientists are practically confirmed. Practical implications. Practical application of obtained results is possible both on the scale of Ukraine and around the world. Building a highly effective corporate culture on the basis of a motivational complex (game, goal, self-realization, psychological and economic pressures and inertia) is extremely effective and fairly simple to apply. Value/originality. The results for the main five elements of the motive complex allow companies to test employees, involve them in the formation and development of a highly effective corporate culture.

In the article, the proposition is substantiated that the current development of the agricultural sector is possible on condition of harmonization of environmental, social and economic factors based on the principles of consistency, balance and social justice. The paper examines the impact of the intellectual component of labor potential on economic growth in the agricultural sector. The study of the main types of production functions for macroeconomic analysis is conducted. The advantages of using the Cobb-Douglas production function in determining the levers of agricultural production growth in the context of sustainable development are substantiated. The present-day priority of activities intellectualization in the agricultural sector is proved. It is proposed to particularly focus on the use of intellectual assets of human potential for agricultural production intensification. The accomplished modeling of the agricultural sector sustainable development gives grounds for an optimistic forecast as to increasing the resource potential of agricultural production due to a growth in the quantitative and qualitative indicators of labor potential.