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- ItemTwo-point boundary value problems for 4th order ordinary differential equations(University of Miskolc, 2024-05-01) Manjikashvili, Mariam; Mukhigulashvili, SulkhanThe new optimal efficient sufficient conditions are established for solvability and uniqueness of a solution of the linear and nonlinear fourth order ordinary differential equations u ( 4 ) ( t ) = p ( t ) u ( t )+ q ( t ) for t E [ a , b ] , u ( 4 ) ( t ) = p ( t ) u ( t ) + f ( t , u ( t )) for t E [ a , b ] , under the following two -point boundary conditions u ( i ) ( a ) = 0 , u ( i ) ( b ) = 0 ( i = 0 , 1 ) , and u ( i ) ( a ) = 0 ( i = 0 , 1 , 2 ) , u ( b ) = 0 , where p E L ([ a , b ] ; R ) is a nonconstant sign function and f E K ([ a , b ] x R; R ) .
- ItemAssessment of Cybersecurity in Organizations: An Empirical Study of Czech and Slovak Organizations(Institute of Eastern Europe and Central Asia, 2024-06-05) Petrová, Kateřina; Špatenka, Jan; Václavík, LukášThe purpose of this research is to evaluate how companies approach cybersecurity, which measures the companies set, and how it is reflected in relation to organizational learning. A questionnaire was distributed electronically among 124 IT and IS professionals working in companies based in the Czech and Slovak Republic. Hypotheses were tested using the chi-square test of independence, the Mann–Whitney U test, and the Pearson correlation coefficient. The results depict that cybersecurity is a fundamental topic for most companies. Unless companies declare the importance of cybersecurity, they do not tend to set and use security rules unless they are not under security laws. Research shows that costs for cybersecurity are variable, not fixed, and are in correlation with the size of the company and the turnover.
- ItemSystematic Review of Current Risk Management Methods in Cybersecurity for Healthcare(University of Hradec Králové Faculty of Informatics and Management, 2024-04-10) Soukupová, Marie; Doskočil, RadekPresented systematic review is analyzing cyber risk management, more specifically economic aspect of the measures resulting from the risk analysis, through search of Web of Science and Scopus databases. The article questions the current scientific knowledge in the field of applicability of quantitative methods on measuring of the negative impact of successful cyberattacks. The purpose of the article is to define how these shall be improved for real application in the environment of healthcare, being specific not only by operating with sensitive patient data, but also by the urgency with which system malfunctions must be dealt with in order to prevent threatening the health and lives of patients (the fact that is providing the attacker with a unique position of privilege). While it is apparently necessary to invest more resources into the cybersecurity in healthcare, it is at the same time essential to ensure that these measures are profitable and the resources for them are spent economically. While cost of human life cannot easily be quantified, it is now time to search for methods on how to define an appropriate cybersecurity investment as opposed to the costs of a potential cyberattack.
- ItemProject Management in the Time of VUCA: Threat or Opportunity?(University of Hradec Králové, 2024-04-10) Košťálová, Jana; Doskočil, Radek; Širáňová, Lenka; Lacko, BranislavThis study addresses the "projectification of society" and its alignment with the VUCA framework (Volatility, Uncertainty, Complexity, Ambiguity). Four widely used international project management standards—PMI, IPMA, PRINCE2, and PM2—are evaluated for their suitability in the VUCA environment. The research employs a multicriteria approach, specifically the Weighted Sum Approach method, considering factors like volatility, uncertainty, complexity, and ambiguity. The selected standards are scrutinized based on their adaptability to VUCA challenges, with a focus on PMBOK, IPMA, PRINCE2, and PM2. The seventh edition of the PMBOK has been evaluated on the first position. The study emphasizes the crucial role of selecting an appropriate project management standard for success in navigating the dynamic VUCA world. The results confirmed this and brought a number of recommendations for managing projects in a VUCA environment.
- ItemSolvability of the symmetric nonlinear functional differential equations(Wiley, 2023-08-07) Dilna, Nataliya; Fečkan, Michal; Rontó, AndrásConditions for the existence of a symmetric solution of nonlinear functional differential equations with symmetries are established.