2,436 research outputs found
Flexible forms of work in organisations
No full textDiplomsko delo obravnava pojav fleksibilnih oblik dela kot enega izmed preoblikovalcev sodobnega delovnega okolja v Evropski uniji s posebnim poudarkom na njihovem razvoju po pandemiji COVID-19. V času, ko se delovne prakse vse hitreje odmikajo od tradicionalnih modelov zaposlitve, fleksibilno delo predstavlja večdimenzionalni pojav, ki presega zgolj prostorsko in časovno razsežnost dela. Delo na daljavo, hibridni modeli dela, skrajšani delovni čas in druge netipične oblike fleksibilne zaposlitve se vse pogosteje uveljavljajo kot sistemski odziv na tehnološke, demografske in družbene spremembe.
Naloga obravnave strukturne, pravne, organizacijske in socialne dimenzije fleksibilnega dela, pri čemer je posebna pozornost namenjena razlikam v razširjenosti in implementaciji ter vplivom na zaposlene med zahodnimi in vzhodnimi članicami EU. Fleksibilnost delovne sile se kaže v dveh oblikah: po eni strani omogoča večjo avtonomijo, prilagodljivost in boljše usklajevanje poklicnega in zasebnega življenja, po drugi strani pa odpira vprašanja delovne negotovosti, digitalne izključenosti, pomanjkanja socialne varnosti in povečanih psiholoških obremenitev zaposlenih.
Rezultati raziskave izpostavljajo potrebo po strateškem in trajnostno naravnanem upravljanju fleksibilnih oblik dela pri reševanju strukturnih izzivov sodobnega trga dela. Fleksibilno delo ni zgolj prehodna praksa, temveč vse bolj predstavlja novo paradigmo organizacije dela, ki zahteva ustrezno institucionalno podporo, premišljene zakonodajne ukrepe ter prilagoditev vodstvenih in kadrovskih praks v organizacijah.This thesis examines the phenomenon of flexible forms of work as one of the transformative forces of the modern working environment in the European Union, with a particular focus on their development after the COVID-19 pandemic. At a time when working practices are increasingly moving away from traditional employment models, flexible work represents a multidimensional phenomenon that goes beyond the spatial and temporal dimensions of work. Remote work, hybrid work models, reduced working hours, and other atypical forms of flexible employment are increasingly becoming established as a systemic response to technological, demographic, and social changes.
The study examines the structural, legal, organizational, and social dimensions of flexible work, with particular attention given to differences in prevalence, implementation, and impacts on workers between Western and Eastern EU member states. Labour flexibility manifests in two main forms: on the one hand, it enables greater autonomy, adaptability, and improved work-life balanceon the other hand, it raises concerns about job insecurity, digital exclusion, lack of social protection, and increased psychological strain on employees.
The research findings highlight the need for strategic and sustainable management of flexible work practices to address the structural challenges of the contemporary labour market. Flexible work is not merely a transitional practice but increasingly represents a new paradigm of work organization, one that requires adequate institutional support, thoughtful legislative measures, and the adaptation of leadership and human resource practices within organizations
Procesnopravna analiza črpanja evropskih sredstev s študijo primera evropskega socialnega sklada
No full textOptical Fibres contactless sensor for dynamic testing of lightweight structures
No full textWith dynamic testing, engineers describe activities focused on the identification of some properties of vibrating structures. This step requires for the measurements of excitations and responses signals, applying appropriate sensors directly on the test article. These instruments modify the system's mass and stiffness distributions and eventually the eigen-properties of the structure. These errors become unacceptable especially when testing lightweight structures. This paper shows the results of some tests performed on a small compressor with the purpose of identifying the blades' natural frequencies and modes. It compares the acquisitions performed with standard accelerometers and two different contact-less systems using as exciters either a micro-hammer or a micro inertial shaker. The paper shows how the contact-less sensors provide good quality data and consistent results in the mode identification phase
Instantaneous Angular Speed Analysis, Measurement Errors and Signal Filtering
No full textRecently, Instantaneous Angular Speed (IAS) is becoming an interesting measurement solution for condition monitoring of rotating machines. Various researchers are studying the measurement’s limits, new signal processing methods and new industrial applications. In Spagnol et al. (Proceedings of COMADEM2013, 2003) [1], IAS is compared to Torsional Laser Vibrometer (TVM) and to acceleration data. IAS is less affected by noise if compared with TVM and it is very informative in respect to acceleration. The current work focuses on the estimation of the IAS through the Elapsed Time (ET) method, using a counter to measure the time elapsed between the pulses of an encoder. From the variation of the IAS during the machine loads’ cycle it is possible to identify defects and faults. The data is acquired from an experimental test rig specifically designed for IAS evaluation. The setup is composed of an asynchronous four poles electric motor driven by a 380V 50Hz line current, a bearings’ test group and a variable brake system simulating different loads’ conditions. The paper reports on the results obtained with different data processing techniques and filtering approaches. The combined effect of the errors generated by the counter and the speed variation of the machines will be analyzed and commented, showing the advantages and drawbacks of the adopted IAS measurement
Modelling, testing and modification on a high performances ski
No full textSkis are very common sport tools. The competition among the different producers to promote and sell their products is very harsh and every seasons new technologies are introduced to improve ski performances and safety characteristics. Even if ski are quite simple in the geometry definition, their internal sandwich structures and the large number of materials and layers makes them somehow problematic to model. In this work, the results of the correlation analysis between the finite elements and the experimental models are presented. The results of the sensitivity analysis performed on the updated model are shown as well. The influence of different material characteristics and various structural modifications have been compared to suggest the best location and properties of a damper element used to reduce the ski vibration. Comparisons between different dampers technologies will be shown as well
Rotational degrees of freedom : an historical overview on techniques and methods
No full textMost of the tools used in the analysis of vibro-acoustic systems are based on the manipulation of frequency response function (FRF) matrices. The different procedures foresee the use of complete matrices where both translational and rotational degrees of freedom (TDOF and RDOF) information are contained. Unfortunately the second group of data is very often neglected with substantial errors in the final results. In order to overcome this problem, known since the early sixties, many solutions have been tried using existing sensors, developing new ones, defining different methodologies and approximations.
This article will give a short review of the different techniques used to measure and excite accurately the RDOF data. Following a historical path, the different procedures will be presented, the finite difference methods, the t-block approaches, the multi-point approximations, the single beam LDV, the multiple laser systems, the scanning laser procedure, the magnetostrictive moment shaker, the pure moment exciter and so on. This work will hopefully help the researchers involved in dynamic modelling to select the most appropriate tools and procedures
Instantaneous angular speed: encoder-counter estimation compared with vibration data
No full textn rotating machinery, actions of the moving parts take place at specific angular positions rather than at specific times. For this reason, having a geometrical reference, such as the one provided by an encoder, and studying the Instantaneous Angular Speed (IAS) variations can provide a large amount of information about the health status of the machine. In fact, from the variation of the IAS during the machine loads’ cycle it is possible to identify defects and faults. The current work focuses on the estimation of the IAS through the Elapsed Time (ET) method, using a counter in order to measure the time elapsed between the pulses of an encoder. Both IAS and vibration measurement are conducted on an asynchronous four poles electrical motor driven by 50Hz line current, without load. The study compares the order analysis of both signals. The bearing’s Fundamental Train Frequency is detected using IAS estimation
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