A study on the forced vibration of a Timoshenko beam

By using Galerkin's variational method an approximate solution is developed for a system of two differential equations with linear partial derivatives of the second order. This system of differential equations corresponds to the physical model, known in the literature as the Timoshenko Beam. The results obtained are applied to two particular cases representing respectively: the case of a beam with a rectangular section, with a constant height and a basis with a linear variation; and the case of a beam with a constant basis and a height with cubic variation

Stabilizing control for power converters connected to transmission lines

This paper proposes a switching control strategy for the set-point stabilization of a power converter connected via a transmission line to a resistive load. The strategy employs a Lyapunov function that is directly based on energy considerations of the power converter, as well as of the transmission line described by the telegraph equations. The proposed stabilizing switching control still allows a certain freedom in the choice of the control law, a comparison between a maximum descent strategy and a minimum commutation strategy being discussed on a simple example.

THE GREAT BATTLES ON THE EASTERN FRONT IN THE SUMMER OF 1917, IN THE COMMENTS OF THE HUNGARIAN PRESS IN ORADEA

The succession of the military actions in the summer of 1917 generated three operations: the one from Mărăşti (the Battle of Mărăşti), the offensive operation of the 2nd Romanian Army; the defense operations of the 1st Romanian Army in the Mărăşeşti area and the right wing of the 2nd Army in the Oituz area (Battle of Mărăşeşti and Battle of Oituz)

Management options in the sudden hearing loss of a diabetic patient

The aim of our paper is to highlight the main therapeutic principles and the management options in the case of a diabetic patient who has had a sudden hearing loss. Mainly, the aim is to underline the sudden hearing loss treatment adjustment of the diabetic patient compared to the non-diabetic patient. By understanding the mechanism of sudden hearing loss in a diabetic patient, namely the impact of glycemic variations and their implication on the microvascular structures of the inner ear, we try to underline the treatment principles and management options of the previously mentioned combined pathologies. Thus, it is necessary to adapt the classes of drugs used in the case of sudden sensorineural hearing loss of the diabetic patient in comparison with the non-diabetic patient, in order not to aggravate or complicate the patient’s functional status. Therefore, the treatment will need to be adapted both by classes of medication and by the type of administration used. Adequate control of the progression, treatment and complications of diabetes mellitus ensures optimal treatment management in case of a sudden hearing loss and therefore interferes with the favorable functional hearing outcomes. The role of this paper is not only to state the therapeutic principles in the case of sudden hearing loss in a diabetic patient, but also to analyze the impact on the management of potential local and systemic risk factors

Combating Unemployment through Social Entrepreneurship in the European Context

Сonsideration of the dynamic changes from the socio-economic environment, social entrepreneurship plays an essential role in the labour market as it creates new jobs, contributes to the improvement of the economic and social position of vulnerable groups in society, and stimulates economic development. The financial crisis from 2008 and the current health crisis, which generated a significant economic crisis and the specific social context existing in each member state, constitute the leading causes that led to a slow convergence rhythm of the labour market at the European Union level. Unemployment and non-employment have a significant impact on the people affected by poverty and the disadvantaged people. A coherent, systematic and sustainable approach to social entrepreneurship is required to generate significant change at the European level