Iskanje po katalogu digitalne knjižnice

Opis: It is estimated that older reinforced buildings represent almost 50% of the total number of existing buildings in Slovenia. It is further estimated that 1/3 of the population of Slovenia lives in areas where the PGA is 0.2g or more. Seismic resistance of such buildings in general is not sufficient and appropriate measures should be implemented. It is recommended that these are designed incorporating the findings of structural monitoring based on which useful information can be obtained. Structural monitoring aims to monitor the possible advancement of existing or formation of new damage due to various reasons, while strengthening measures aim to ensure structural integrity and adequate level of seismic resistance of building. The article describes the current practice in this field in Slovenia through practical examples. Additionally, suggestions that could help improve the current approach such as combining the global calculation model with local failure mechanisms and combining the activities of monitoring, investigations of structure and assessing seismic resistance are given. Usage of emerging technologies that are non-invasive both in monitoring, as well as investigation of structure is encouraged. It is recommended that reversible strengthening measures especially in the case of heritage buildings are used.
Ključne besede: masonry buildings, structural monitoring, structural integrity, improvements
Objavljeno v DKUM: 19.05.2025; Ogledov: 0; Prenosov: 0

Opis: This paper presents an experimental and numerical analysis of the mechanical behaviour of orthopaedic implants with crack-type defects, considering the principles and advantages of the modern X-FEM method, which was used due to limitations of traditional FEM in terms of crack growth simulation, especially for complex geometries. In X-FEM, the finite element space is enriched with discontinuity functions and asymptotic functions at the crack tip, which are integrated into the standard finite element approximation using the unity division property. Though rare, femoral component failures are well-documented complications that can occur after hip prosthetic implantation. Most stem fractures happen in the first third of the implant due to the loosening of the proximal stem and fixation of the distal stem, leading to bending and eventual fatigue failure. The main goal of this paper was to obtain accurate and representative models of such failures. Experimental analyses of the mechanical behaviour of implants subjected to physiological loads, according to relevant standards, using a new combined approach, including both experiments and numerical simulations was presented. The goal was to verify the numerical results and obtain a novel, effective methodology for assessing the remaining fatigue life of hip implants. For this purpose, the analysis of the influence of Paris coefficients on the total number of cycles was also considered. Hence, this simulation involved defining loads to closely mimic real-life scenarios, including a combination of activities such as ascending stairs, stumbling, and descending stairs. The tensile properties of the titanium alloy were experimentally determined, along with the Paris law coefficients C and m. The finite element software ANSYS 2022R2 version was used to develop and calculate the three-dimensional model with a crack, and the resulting stresses, stress intensity factors, and the number of cycles presented in the figures, tables, and diagrams. The results for the fatigue life of a partial hip implant subjected to various load cases indicated significant differences in behaviour, and this underscores the importance of analysing each case individually, as these loads are heavily influenced by each patient’s specific activities. It was concluded that the use of numerical methods enabled the preliminary analyses of the mechanical behaviour of implants under fatigue loading for several different load cases, and these findings can be effectively used to predict the possibility of Ti-6Al-4V implant failure under variable cyclic loads.
Ključne besede: structural integrity, fatigue fracture, extended finite element method (XFEM), experimental testing, DIC, numerical simulations, stress intensity factor, orthopaedic implants, crack-type defect
Objavljeno v DKUM: 21.03.2025; Ogledov: 0; Prenosov: 7
Celotno besedilo (5,22 MB)
Gradivo ima več datotek! Več...

Opis: Purpose: Mobile devices have become an indispensible part of modern communications; they enable easy access to the Internet and also remote manipulation of data stored in corporate information systems. The number of mobile device users is on the rise, but most of them don’t comprehend completely the less obvious functions of these devices. Users also have almost no control over background computer programs, because they run without their knowledge and volition. From the standpoint of information security, a lack of awareness of the risks can seriously compromise the integrity of corporate networks and information systems. The weakest links are users, but also the technology itself. To ensure the functioning and security of information systems, corporations and individual users should learn about protective mechanisms. It is also important that users adhere to implemented (internal) safety regulations. Design/Methods/Approach: We used descriptive and comparative methods, and made an overview of published literature, as well as processes pertaining to the use of mobile devices and related security issues. We compared general elements of information security in regard to the use of mobile devices. Findings: At present mobile devices are more and more frequently used to access information systems. The majority of users are concerned almost exclusively with the question, how to get uninterrupted remote access to data, but far less with security issues. This paper presents some guidelines for achieving and maintaining information security. Research limitations/implications: It has been noted, that this is a time of turbulent development and evolution in the field of mobile devices, and also related security issues, so best practices haven’t been defined yet. Corporations and other organizations have just recently begun defining guidelines to eliminate security breaches through mobile devices, therefore a comparison of their implemented solutions is practically impossible. VS_ Practical implications: We propose guidelines, which can be used to: minimize information security risks posed by mobile devices; evaluate the current state of information security; and implement protective measures against cyber threats encountered by corporations and individual users of mobile devices. Originality/Value: Information security is a relatively new field because mobile devices and remote access to the Internet and data have just recently come into wider use. At the same time security issues and protective measures have stayed largely overlooked. Security threats are many, so it is impervious that users learn more about them and adopt some necessary security measures.
Ključne besede: information security, blended threats, mobile devices, corporate information systems, business integrity
Objavljeno v DKUM: 12.05.2020; Ogledov: 1346; Prenosov: 68
Celotno besedilo (884,10 KB)
Gradivo ima več datotek! Več...

Opis: These general guidelines serve as a supportive document for the glossary for academic integrity (sub-output 3G) that describes the definitions of terms related to academic integrity. They serve to help build common understandings of integrity issues in both academia and business. The guidelines outline minimum requirements and responsibilities of various stakeholders in academia. Many of the guidelines are necessarily general, but, where relevant, we provide country-specific examples as well as adjusting to meet to the needs of different fields of study/research. The general guidelines are addressed to a full range of stakeholders, including national ombudspersons, judicial authorities, compliance officers, research project managers and other related bodies or units in academia (such as policy units, educators/instructors, senior administrator/managers/coordinators) as well as students, the business sector and others.
Ključne besede: guidelines, academic integrity, academic writing, academic publishing, ethics, plagiarism, copyright, data fabrication, data falsification, cheating
Objavljeno v DKUM: 15.10.2019; Ogledov: 2005; Prenosov: 127
Celotno besedilo (1001,05 KB)
Gradivo ima več datotek! Več...
Gradivo je zbirka in zajema 2 gradivi!

Opis: The aim of this article is to analyse the most important issues related to the latest forms of online advertising. In particular, appreciating the importance of online advertising in the development of the information society, the question is then raised about the legal limits of the admissibility of advertising, which is invasive, insistent or contains hidden meaning, inaccessible to the recipient's awareness of content. This issue has been presented from the perspective of European Union (EU) law, in the context of selected directives relevant for online advertising. The problem raised in the article deserves to be developed because we observe a sharp increase in the importance of the Internet, and the online advertising issue has not been the subject of comprehensive regulation in EU law.
Ključne besede: online advertising, native advertising, product placement, unfair competition, integrity in advertising
Objavljeno v DKUM: 02.08.2018; Ogledov: 1398; Prenosov: 348
Celotno besedilo (327,57 KB)
Gradivo ima več datotek! Več...