1. A global analysis of the impact of COVID-19 stay-at-home restrictions on crimeAmy E. Nivette, Gorazd Meško, Renee Zahnow, Raul Aguilar Ruiz, Andri Ahven, Amram Shai, Barak Ariel, María José Arosemena Burbano, Roberta Astolfi, Dirk Baier, Hyung-Min Bark, Joris E. H. Beijers, Marcelo Bergman, Gregory Breetzke, Alberto Concha-Eastman , Sophie Curtis-Ham, Ryan Davenport, Carlos Díaz, Diego Fleitas, Manne Gerell, Kwang-Ho Jang, Juha Kääriäinen, Tapio Lappi-Seppälä, Woon-Sik Lim, Rosa Loureiro Revilla, Lorraine Green Mazerolle, Noemí Pereda , Noemí Pereda , Maria Fernanda Peres, Rubén Poblete-Cazenave, Simon Rose, Robert Svensson, Nico Trajtenberg, Tanja Van der Lippe, Joran Veldkamp, Carlos Javier Vilalta Perdomo, Manuel P. Eisner , 2021, original scientific article Abstract: The stay-at-home restrictions to control the spread of COVID-19 led to unparalleled sudden change in daily life, but it is unclear how they affected urban crime globally. We collected data on daily counts of crime in 27 cities across 23 countries in the Americas, Europe, the Middle East and Asia. We conducted interrupted time series analyses to assess the impact of stay-at-home restrictions on different types of crime in each city. Our findings show that the stay-at-home policies were associated with a considerable drop in urban crime, but with substantial variation across cities and types of crime. Meta-regression results showed that more stringent restrictions over movement in public space were predictive of larger declines in crime.
Keywords: criminology, crime, pandemic, restrictions, stay-at-home, analysis
Published in DKUM: 03.10.2024; Views: 0; Downloads: 0
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2. System design of a vehicle based on the matrix approach using functional analysis of the maintenanceDušan Mežnar, 2021, original scientific article Abstract: The use of extended standard functional analysis of maintenance in the design phase of vehicle structure analysis is presented for the first time, where a matrix of the degree of importance of modules or parts, a matrix size between costs and benefits (costs–benefits), and a logistic support matrix (support index and repair time) are used. The use of these methods allows a designer to be able to determine, in the very early phase of the construction process, the important factors (structure, component price, reliability, repair costs, response time, logistic supportability) that have a major impact on vehicle maintenance. Extended functional analysis also allows us to define critical structures in the project specification of vehicles. A crucial issue in functional analysis is the very extensive implementation of research, drawing conclusions and findings with the basic goal of determining a set of indicators for the verification of assumptions and hypotheses.
Keywords: maintenance, functional analysis, maintenance, vehicle design, structure design
Published in DKUM: 30.09.2024; Views: 0; Downloads: 0
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3. Finite element analysis of titanium foam in mechanical response for dental applicationSnehashis Pal, Igor Drstvenšek, 2021, original scientific article Abstract: Metals with certain porosity are a new class of materials with extremely low density and a unique combination of excellent mechanical, thermal, electrical, and biocompatible properties. Absorption of impact and shock energy, dust and fluid filtration, construction materials, and most importantly, biocompatible implants are all potential applications for metallic foams. An orthopaedic implant made of metallic foam can provide an open-cell structure that allows for the ingrowth of new bone tissue and the transport of body fluids. Due to its strong biocompatibility and stable fixation between the implant and human bone, titanium foam has recently received much attention as an implant material. Finite element modelling is a suitable method to obtain an efficiently designed implant. Accurate finite element analyses depend on the precision before implementation as well as the functionality of the material properties employed. Since the mechanical performances of titanium foam and solid titanium are different, a constitutive model for porous metal is required. The model of Deshpande and Fleck in the finite element analysis software ABAQUS is used to describe the compressive and flexural deformation properties of titanium foam with 63.5% porosity. The finite element simulation results were compared with the practical mechanical properties obtained by compression testing of the foam. Finally, the material modelling was used to investigate the stress distributions on the dental implant system.
Keywords: finite element analysis, ABAQUS, titanium foam, sintering, dental implant, material modeling, mechanical properties, bending, compressing
Published in DKUM: 25.09.2024; Views: 0; Downloads: 2
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4. Lower secondary school experiences as predictors of career aspirations toward engineering, and production and processing occupationsMateja Ploj Virtič, Andrej Šorgo, 2022, original scientific article Abstract: The global demand for technically educated persons is greater than the supply. It is believed that interest and school experience can influence career choice. 624 Slovenian high school students participated in the survey. Exploratory and Confirmatory Factorial Analysis procedures were used to investigate the influence of school and out-of-school-related factors on career aspirations. Predictors of career aspirations in (a) engineering and (b) production and processing occupations in the models were: (1) students’ opinions on technical topics, (2) the content of school subject Technics and Technology; and (3) related classroom experiences. The results of the models showed that career aspirations were explained by out-of-school generated opinions on technical topics and not by school-related factors. Boys are more enthusiastic than girls in their career aspirations for technically oriented occupations. This calls for a fundamental revision of the school subject and the corresponding teaching.
Keywords: career aspirations, classroom experiences, SEM analysis, engineering, production and processing
Published in DKUM: 20.09.2024; Views: 0; Downloads: 0
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5. Proceedings in the case of Benedik v. Slovenia : Bachelor thesis undergraduate study programme Criminal Juctice and Security, B.A.Ana Jovanovska, 2024, undergraduate thesis Abstract: The case of Benedik v. Slovenia is a perfect example of the complexity between the right to privacy and covert investigative measures carried out by law enforcement in the digital age. Thus, this thesis aims to precisely explain the legislation governing the right to privacy under both internal law and the European Convention on Human Rights, with a particular emphasis on covert investigative measures. By exploring and defining the legal frameworks that protect the privacy rights of individuals, we aim to clarify the balance between state surveillance powers and individuals' privacy rights. The study systematically shows the evolution and current state of the legal provisions regarding covert investigative measures in Slovenia. The main focus of this thesis is the legal proceedings in the case of Benedik v. Slovenia. It serves as a prism through which the complexities of privacy protection, specifically, electronic privacy are analyzed in the context of data disclosure and internet usage. The study examines the legal proceedings at all court instances, including Kranj District Court, Ljubljana Higher Court, Supreme Court, and Constitutional Court of the Republic of Slovenia leading to a complaint that the applicant, Benedik, filed at the Strasbourg Court. The later ruling of the European Court of Human Rights addressed the interaction between domestic laws and international human rights norms in detail. An in-depth understanding of how covert investigative measures are integrated with the right to privacy is provided through an analysis of the arguments made, the legal reasoning used by the courts, and the verdicts issued. This thesis's comprehensive explanation offers valuable insights into the balance between state surveillance needs and the protection of individuals' right to privacy, highlighting the complexities of these issues in the modern digital age.
Keywords: Benedik v. Slovenia, analysis of the judicial proceedings, human rights, right to privacy, covert investigative measures
Published in DKUM: 28.08.2024; Views: 104; Downloads: 14
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6. Sustainable developement in logistic : a strategy for management in terms of green transportDorota Klimecka-Tatar, Manuela Ingaldi, Matevž Obrecht, 2021, original scientific article Abstract: Supply chain management is one of the most important elements of sustainable development. And due to the fact that the world market is driven by supply and demand, and the determinant of access to products is regional and international logistics, this paper focuses on the possibilities of implementing a green transport strategy in the context of sustainable development in logistic enterprises. This paper presents the results of the SWOT anal-ysis pointing out the strengths, weaknesses, opportunities, threats of green vehicles market for the transport enterprises. It was noticed that the situation on the green vehicles market for the transport enterprises is charac-terized by the advantage of strengths and these strengths should be used to maximize the use of green vehicles. It emphasized that subsidies for green vehicles would allow to invest in a modern fleet, new solutions (e.g. own charging stations) can have an impact on the greater energy efficiency (self-sufficiency), increase of social aware-ness would force enterprises to take appropriate actions in the field of environmental protection and develop-ment of publictransport based on green vehicles.
Keywords: logistic enterprises, green transport strategy, green vehicles, SWOT analysis, environmental protection, sustainable development, green logistics, sustainability
Published in DKUM: 27.08.2024; Views: 66; Downloads: 5
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8. The technical efficiency of Tunisian ports : comparing data envelopment analysis and stochastic frontier analysis scoresRabeb Kammoun, 2018, original scientific article Abstract: Maritime transportation for Tunisia plays an important role in trade exchange with other countries. Therefore, the objective of this paper is to measure the efficiency scores of 7 seaports in Tunisia by applying the Stochastic Frontier Analysis (SFA) with Cobb-Douglas production function and Data envelopment analysis (DEA) with CCR and BCC models. The annual data collected cover the 2007-2017 period for each port. Thus, the sample size for the analysis comprises a total of 77 observations. The empirical result shows that the total average scores of operating efficiency scores were DEA-BCC (0.746)>SFACD (0.536)>DEA-CCR (0.334) from 2007 to 2017. Given these results, the port of Gabes can be considered as the best efficient port in the 3 models (DEA-BCC, DEACCR and SFA-CD).
Keywords: efficiency, data envelopment analysis (DEA), stochastic frontier analysis (SFA), Tunisian seaports
Published in DKUM: 22.08.2024; Views: 44; Downloads: 2
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9. Exploring the inherent heterogeneity of vaccine hesitancy : a study of a childhood-vaccine-hesitant populationMonika Lamot, Andrej Kirbiš, Mitja Vrdelja, 2024, original scientific article Abstract: Vaccine hesitancy and its determinants have been previously widely researched. Vaccine hesitancy has been defined as a continuum of attitudes, ranging from accepting vaccines with doubts to rejecting them. The present study aims to explore the heterogeneity of a childhood-vaccine-hesitant group by using a person-oriented approach-latent profile analysis. A non-representative cross-sectional sample of vaccine-hesitant Slovenians (N = 421, Mage = 35.21, 82.9% women) was used to identify differences based on their reliance on personal research (“self” researching instead of relying on science), overconfidence in knowledge, endorsement of conspiracy theories, complementary and alternative medicine, and trust in the healthcare system. The analysis revealed three profiles of vaccine-hesitant individuals. The most hesitant profile-vaccine rejecting-expressed the greatest reliance on personal research, expressed the highest endorsement of conspiracy theories and complementary and alternative medicine, showed moderate overconfidence in their knowledge, and expressed the highest levels of distrust in the healthcare system. We further found differences in sociodemographic structure and that the identified profiles differed in their attitudes regarding MMR, HPV, and Seasonal Influenza vaccinations. The present study demonstrates the heterogeneity of the vaccine-hesitant community and offers insights into some of the traits, which are crucial for designing pro-vaccine campaigns.
Keywords: vaccine hesitancy, heterogeneity, latent profile analysis, complementary and alternative medicine, CAM, conspiracy theories, trust in healthcare system
Published in DKUM: 21.08.2024; Views: 101; Downloads: 6
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10. Single-tray VLM vs dual-tray VLM : quantitative throughput comparisonGoran Đukić, Tihomir Opetuk, Brigita Gajšek, Tone Lerher, 2021, original scientific article Abstract: In this paper quantitative comparison of resulting throughputs for single-tray and dual-tray VLM devices is presented. Comparison is based on mathematical models for throughput approximating dual command times of VLM's crane, for selected parameters of VLM device (height and crane's velocity) and selected picking times per delivered tray. Analysis showed that throughput increase achieved by using dual-tray VLM's depends mostly on the average picking time relative to the expected dual command time of the VLM's crane. Highest improvements are possible for picking time equal to expected dual command time and amounts over 80%, however for extremely low or high picking times improvements are significantly reduced.
Keywords: order-picking, throughput model, vertical lift module systems, quantitative analysis, intralogistics, dual-tray VLM, single-tray VLM
Published in DKUM: 12.08.2024; Views: 48; Downloads: 7
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