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Optimization and decision-making for a service contract on machine maintenance

100%

LUO Z. , YANG Z. , WU J. , LIAN Z.

Operations Research and Decisions

2024

tom 34

nr 4

89-101

We investigate a novel maintenance service contract model. The service provider of the machine must determine the optimal pricing structure and staffing levels, while the client selects an appropriate plan for the warranty duration. We consider linear, quadratic, polynomial, and exponential pricing functions for three types of warranties. By building a service model with a non-cooperative game, we obtain the Nash equilibrium of the bargaining solution. Numerical analysis reveals that the optimal warranty period decreases monotonically with service provider revenue and increases monotonically with the maximum prospective service time. Additionally, the market size does not affect the ideal warranty duration when the machine’s lifetime is constant.

Reżim prawny umowy o praktykę absolwencką

86%

Barański M.

nr 2

527-542

In the Polish legal system, the principles of acquiring professional qualifications by graduates were regulated primarily in the Act of 17 July 2009 on graduate practices. The provisions of this Act raise serious doubts of an interpretative nature, mainly due to the lack of a clear and comprehensive indication of the legal regime of the graduate practice contract. Meanwhile, determining what legal provisions, as well as how they apply to the graduate practice contract is of great importance, because in the event of an erroneous legal qualification of such a contract, its parties are exposed to far-reaching legal consequences. Due to the carried out considerations it was assumed that the graduate practice contract is a labor law contract, to which civil law provisions should be applied by analogy (in addition to the provisions of the Act of 17 July 2009 on graduate practices and labor law provisions mentioned in this Act). The Author also formulated de lege ferenda postulates.

New approach to typified microservice composition and discovery

72%

Gerasimov N.

tom Vol. 13, No. 1

79--83

Several problems related to work reliability appear while building service-oriented systems. The first problem consists of the lack of static typing and the lack of interservice data type checking. The second one consists of the high connectivity of services. The article shows an example of the strong and static polymorphic type system and the type check algorithm. The service-contract and the contract discovery concepts for universal service linking and type verification are described. After theoretic results had been realized in a service form, they were applied in practice in the real system, which improved its reliability. Also, technical realization decreased services connectivity, which promoted system quality increase. However, the increased complexity of the resulting system leveled advanced reliability.

Analiza form zatrudnienia w Polsce

58%

Januszewska M.

2014

tom 15

57 - 70

Of course, there is no universal answer when it comes to deciding which form of agreement is the best, as it depends on the type of work. If it bears the hallmarks of an employment relation, even though costs for both an employer and an employee are significant, it is worth concluding an employment contract because the privileges it confers are not comparable with other agreements. In such a situation service contract as the sole source of income does not cause any savings for an employer but only increases the cost for an employee. It can be stated with absolute certainty that what makes an employment contract more attractive are more likely vacations than the costs associated with the contributions which are unlikely to bring real benefits in the form of a decent pension. When it comes to an agency contract, it is beneficial for both sides only for the first two years of existing of the enterprise and only if the salary contains more than just a provision. After two years, the only side saving money is an employer. So if it is possible, it pays off to include other types of civil contracts as they leave more net resources to use if somebody has another source of income or is a student.