Simona Miclăuş, Lucian Barbu-Tudoran, Paul Bechet and Octavian Baltag
By applying a non-standardized methodology and by using electric- and magnetic-field probes of small dimensions (< 1cm), we experimentally characterized the electromagnetic shielding properties of a fabric containing ferromagnetic microwires weaved on a single direction. Electronic microscopy and X-ray spectroscopy revealed the structure, dimensions and chemical elements content of the amorphous magnetic material. Electric shielding factor proved to be very low in the investigated frequency range, but magnetic shielding factor was high, especially when the weaving direction of the magnetic wires corresponded to the polarization direction of the emitting antenna, and showed some resonances. The magnetic shielding efficiency, if checked against an increasing incident magnetic flux density, proved not to change up to 200 nT. The investigated fabric have been previously proved to be very efficient in shielding the field emitted by a mobile phone in its near field, but present results show that near and far field shielding properties are different.
Across the world, the number of old adults has grown significantly over recent decades. This has raised a number of questions related to the availability of human resources in the present day. One current concern, visible in society, is related to older employees’ competence and performance. Often, older employees are perceived as less competent and perceived that they perform less well than younger employees, but this image does not meet the reality. Studies related to older employees’ performance show that certain aspects of performance are either equal to, slightly lower, or even higher than those of younger employees. Important elements that make the performance of older adults comparable with the performance of younger adults, among others, include experience, and level of past and present cognitive and physical stimulation; elements with very large interpersonal variability.
In contemporary society, propaganda has a major impact due to the new technologies in the media (satellite television, the Internet) that ensure the rapid and instant transmission of information, thus expanding the audience. The concept of propaganda acts systematically in support of a doctrine, in order to persuade a large mass of individuals. It is generally associated with a negative action, considered to be reprehensible, and this is the consequence of the attempts that various totalitarian regimes have manifested abusively. Basically, propaganda is a conscious communication act with a political and revolutionary character representing a strategy of social influence. The element of difference is misinformation. Thus, this concept can be one of integration and consolidation of the society or, on the contrary, it can be a factor of agitation.
Romania’s membership of the select group of states belonging to the North Atlantic Treaty Organization brings, in addition to the expected security benefits and assurances and commitments and obligations that we have to assume. The participation of politicians, militaries and Romanian experts in the decision-making within the specialized committees of the NATO structures is an extremely important element for the assertion of Romania as a security guarantor in the area, a hypostasis that was only a vision a few years ago. This role of our country must be supported by strong and powerful military capabilities, capabilities that are hard to reach for many of the countries in Eastern Europe. The economically advantageous and technologically viable solution for a period of time is to acquire advanced military technical systems that are equipped with the great economic powers of NATO, systems used and verified by these armies, revitalized and upgraded, a second life goal.
The entire training process aims at completing the professional training of the military so that they can maintain a high level of work capacity and combat ability, even under multiple demands. The morphological and functional characteristics of the military in this category require the organization and development of a well-planned, organized and managed training system that ensures that the assessment standards are met but at the same time does not produce physical, mental or functional disturbances of the body.
In this paper we will present the concept of Protestant Work Ethics as conceptualized and measured by several authors, starting with its initiator, Max Weber, in order to emphasize the importance of work ethic on attitudes towards work. We will also analyze the four dimensions of work ethic - hard work, nonleisure, independence and asceticism, identified by Blau and Ryan (1997) among military students, trying to identify how they vary according to a series of socio- demographic data of military students.
The issue of recruiting a quality human resource appears to be, more or less, a universal one, and it is not just an issue for the United States of America but also for Europe, as the modern armies are confronting with difficulties in recruiting and retaining military personnel. The reasons are generated by the changes of the values in civil society, as well as by the fact that the interest and motivation of joining the army are declining, especially among young people. The competition between the private labor market and the military organization is increasing due to the high level of education of the younger generation and the unemployment rate. Increasing the confidence of the population towards the army and emphasizing the its role of employer determine the connection with the young people, especially for stimulating the desire and attracting them to the military profession.
The twentieth century end created the premises for the emergence of a new global space for interaction. The development and normalization of cyberspace enabled redefining the norms of human cohabitation. In the first phase of development, this concept of social interaction has favoured for the first time in history the possibility for people to document and express themselves freely. This could be done under the protection of anonymity without them being afraid of any possible consequences. The subsequent evolution has invalidated the enthusiasm of the “founding fathers” regarding these ideas, but has contributed significantly to the development of trade and technological innovation
The development of drones has been exceedingly rapid in the last few years. They can be used in many different areas of life, they are fit to solve a range of problems, in fact, in some fields they may open up new horizons. Besides their advantages, however, we must also see their downside. This article will focus on the development of these unmanned aerial vehicles and will elaborate on the regulations affecting the small-size devices, which are the most widespread. This section will be followed by the introduction of their potential use in law enforcement, with special focus on the protection of prisons. The paper will also discuss what hazards are involved in the illegal use of drones with regards to jails, and what response can be given to these new challenges.
In order to optimize the breathing apparatus in the open circuit for divers, theoretical calculus and numerical simulation of resistances specific to the potential flow of gas through the studied circuit were made. Respiratory gas flow simulation through three constructive versions of the second stage pressure reducer intake mechanism was done after modeling the respiratory air circuit through the two main restrictors: the first variable (between the seat and the piston) and the second fixed (the hole in the cylindrical piston). The results regarding the theoretical calculation and numerical simulation have been validated by experimental testing of two of the studied models. Experimental measurements were made on a tester at the Diving Center of Constanta's Hyperbaric Laboratory. The volume flow rate of supplied respiratory gas was recorded, together with the inspire depression that opens the mechanism, until the maximum flow rate for each constructive version. After validating the results of the theoretical calculation and numerical simulation on the two models, the conclusion is the same: the resistance decreases if the geometry of the cylindrical hole in the piston (the second fixed restrictor) changes in a conical hole