КОНЦЕПЦІЯ ІСТОРІЇ ДАВНЬОУКРАЇНСЬКОГО МИСТЕЦТВА У КОНТЕКСТІ РОЗВИТКУ АРХЕОЛОГІЧНОЇ НАУКИ КІНЦЯ XIX - ПОЧАТКУ XX СТОЛІТТЯ

Becoming of conception of history of ancient Kiev's art in the context of elaboration of archaeological science at end of the XIX and beginning of the XX century. In the article is explained the problem of becoming of scientific conception of history of domestic art. The publications are examined on the indicated problem of leading specialists of that epoch in Labours o f archaeological conventions at end of the XIX and beginning of the XX century as an information base for explaining of historiogyraphy questions in researches of different aspects of history o f the Ukrainian art. В статті висвітлюється проблема становлення наукової концепції історії вітчизняного мистецтва. Розглядаються публікації із зазначеної проблеми провідних фахівців тієї доби у Працях археологічних з ’їздів кінця XIX початку - століття в якості джерельної бази для висвітлення історіографічних питань в дослідженнях різних аспектів українського мистецтва

Individual and group-level job resources and their relationships with individual work engagement

OBJECTIVES: This study adds a multilevel perspective to the well-researched individual-level relationship between job resources and work engagement. In addition, we explored whether individual job resources cluster within work groups because of a shared psychosocial environment and investigated whether a resource-rich psychosocial work group environment is beneficial for employee engagement over and above the beneficial effect of individual job resources and independent of their variability within groups. METHODS: Data of 1,219 employees nested in 103 work groups were obtained from a baseline employee survey of a large stress management intervention project implemented in six medium and large-sized organizations in diverse sectors. A variety of important job resources were assessed and grouped to an overall job resource factor with three subfactors (manager behavior, peer behavior, and task-related resources). Data were analyzed using multilevel random coefficient modeling. RESULTS: The results indicated that job resources cluster within work groups and can be aggregated to a group-level job resources construct. However, a resource-rich environment, indicated by high group-level job resources, did not additionally benefit employee work engagement but on the contrary, was negatively related to it. CONCLUSIONS: On the basis of this unexpected result, replication studies are encouraged and suggestions for future studies on possible underlying within-group processes are discussed. The study supports the presumed value of integrating work group as a relevant psychosocial environment into the motivational process and indicates a need to further investigate emergent processes involved in aggregation procedures across levels

Analytical research of damping efficiency and heat generation of magnetorheological damper

International audienceMagnetorheological (MR) dampers are currently used in various areas, such as: human prosthetics,seismic protection, active suspensions, safety systems, amongst other. This paper deals with theproper design of a MR damper in the innovative field for vibration control. A methodology forcalculation some principal characteristics of the damper such as: electromagnet’s magnetic fieldvalue, emitted heat and damping force is presented. The methodology is based on analyticcalculations of the characteristics and finite element method analysis. The obtained theoreticalresults were confirmed by performed experimental tests, thanks to a specially designed and realisedMR damper. Two main geometrical characteristics of the damper, namely: piston thickness andelectromagnet width were optimally chosen, thus allowing to reach maximum damping force

Analytical research of damping efficiency and heat generation of magnetorheological damper

International audienceMagnetorheological (MR) dampers are currently used in various areas, such as: human prosthetics,seismic protection, active suspensions, safety systems, amongst other. This paper deals with theproper design of a MR damper in the innovative field for vibration control. A methodology forcalculation some principal characteristics of the damper such as: electromagnet’s magnetic fieldvalue, emitted heat and damping force is presented. The methodology is based on analyticcalculations of the characteristics and finite element method analysis. The obtained theoreticalresults were confirmed by performed experimental tests, thanks to a specially designed and realisedMR damper. Two main geometrical characteristics of the damper, namely: piston thickness andelectromagnet width were optimally chosen, thus allowing to reach maximum damping force