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Found 6327 publications
Strategic management, scenario analysis and competitive advantage analysis: New opportunities for anti-money laundering system reform
Publication Name: E A M Ekonomie A Management
Publication Date: 2023-01-01
Volume: 26
Issue: 2
Page Range: 140-157
Description:
The article identifies and mathematically substantiates vectors of reforming the financial monitoring system based on the synergistic approach in the cross-country context by developing scenarios by selecting internal and external factors that stimulate money laundering. The key external and internal factors of the money laundering process intensification are indicated. Competitive advantages of the anti-money laundering processes, the achievement of which is possible in terms of key external and internal factors for activation of money laundering process are formed. The relationship between the key internal and external factors of money laundering intensification and competitive advantages by building a binary characteristic matrix is formed. The synergy effect made by the mutual influence of simultaneously acting internal and external factors – a quantitative feature of the further strategy of the financial monitoring system reforming in terms of cross-country analysis is calculated. An economic-mathematical model for evaluating and interpreting strategy for improving the financial monitoring system in terms of cross-country context based on integer optimization is developed. In the article, there is calculation of the number of competitive advantages received by each observed country, without considering the possible synergy effect of mutual influence of simultaneously acting internal and external factors on each other. Moreover, there is quantitative assessment of the synergy effect made by the emergence of additional competitive advantages due to a certain combination of simultaneous influence made by external and internal factors of the money laundering intensification. The “ideal” situation of the possibility of gaining all possible competitive advantages in reforming the financial monitoring system in terms of cross-country context by overcoming internal and external factors stimulating the money laundering is studied. The results of the cross-country analysis form a basis for the further formalization of the limits for quantitative evaluation of the developed strategies through a uniform distribution.
Open Access: Yes
Web-Based Map Service Connected to ROS2 Robot Network
Publication Name: Chemical Engineering Transactions
Publication Date: 2023-01-01
Volume: 107
Issue: Unknown
Page Range: 55-60
Description:
The key for testing the driving assistance and autonomous vehicle systems is to establish an advanced infrastructure. For special manoeuvres, a special track is necessary. The path of the track is always changing as the investigated function changes. This means a lot of track construction work for the operation of the proving ground. The engineers of the ZalaZone proving ground perform continuous track construction tasks for the various dynamic tests, which is a time-consuming, resource-intensive task. The goal is to develop an environment that can manage a semi-automatic test track building in a sustainable way. The placing of traffic cones can also be carried out by autonomous robots designed for this purpose, according to pre-designed plans, which are under development at the University of Győr. Automating this task can save a lot of energy, live work, and fuel also can optimize the load and the route of the robots. This paper discusses the theoretical design and possible physical architecture of a framework for the coordination of the tools used. It presents a possible software environment for managing and publishing data in a form that can be integrated with map data represented in different map projection systems. This requires the development of an HTTP-ROS2 interface that can transfer position and other descriptive data of participants communicating on the ROS2 network to the web server that provides the base maps. This work presents a map interface for the near real-time display of positional data from robotic tests carried out in the ZalaZone area. As a result, the map allows the movement of registered objects to be tracked and displayed on the web map via the internet on a publicly accessible server running on the university network. The server is currently capable of mapping the data recorded on the ROS2 network, but only on the local network. It implements the display of pre-saved data from the ROS2 network via the Internet. The long-term goal is to develop a web-accessible mapping framework that allows the current position of the cone-positioning robots to be displayed and controlled through this interface.
Open Access: Yes
DOI: 10.3303/CET23107010
Calibration Measurements and Computational Models of Sensors Used in Autonomous Vehicles
Publication Name: Periodica Polytechnica Transportation Engineering
Publication Date: 2023-01-01
Volume: 51
Issue: 3
Page Range: 230-241
Description:
An increasing number of vehicles are equipped with cameras. As perception sensors, they scan the surrounding area and supply the Advanced Driver Assistance Systems (ADAS) for building up an environmental model through the use of computer vision techniques. While they perform well under good weather conditions their efficiency is reduced by adverse environmental influences such as rain, fog and occlusion through dirt. As a consequence, the vision based ADAS obtains poor quality information, and the model also becomes faulty. This paper deals with methods to estimate information quality of cameras in order to warn the assistance system of possible wrong working conditions. In particular, situations of contamination or occlusion of the windshield or camera lens, as well as foggy weather are taken into account in this paper. In the issue of occlusion total, fractional and transparent effectuations have to be recognized and distinguished. Therefore, this paper proposes an approach based on edge analysis of consecutive frames and presents initial experimental results of the implementation. In the field of Fog Detection a method based on the Logarithmic Image Processing Model is described and the results are shown.
Open Access: Yes
DOI: 10.3311/PPtr.18453
Research on Risk Control Parameters of a Shielded-Tunnel-enlarged Station, based on Bearing Capacity of Pre-removed Segment
Publication Name: Acta Polytechnica Hungarica
Publication Date: 2023-01-01
Volume: 20
Issue: 1
Page Range: 213-229
Description:
A pre-removed segment is a new structure segment applicable to enlarging shield tunnel technology. It can facilitate the removal of the excess partitioned segment, for an enlarged station, by shield tunnel, however, it may cause certain risk of enlarged excavation construction, when a certain construction control limit is exceeded. To study the risk control problem for the removed segment, applicable to the shielded-tunnel-enlarged station, a risk control method, based on the load critical curve of the pre-removed segment is proposed. In this paper, a three-dimensional stratum structure model of the shielded-tunnel-enlarged station is established and variations of forces on the interface of the pre-removed segment are analyzed, under the influences of buried depth and staggered distance, for different enlarged excavation construction stages, as well as different soil properties (elasticity modulus). Combined with the load critical curve of the contact surface concerning the pre-removed segment obtained from the test, the critical construction control surface of buried depth and staggered distance, was obtained to ensure the bearing capacity of the pre-removed segment in different soil properties and in all of the involved enlarged excavation stages. It provides the technical guidance and reference for the construction risk control of the application of pre-removed segment in the shielded-tunnel-enlarged station.
Open Access: Yes
Fatigue damage analysis of pavements under autonomous truck tire passes
Publication Name: Pollack Periodica
Publication Date: 2022-12-31
Volume: 17
Issue: 3
Page Range: 59-64
Description:
Two different tire configurations consisting of a dual tire and a super single wide tire having different range and distribution of contact pressures have been analyzed. Along with the effect of speed on development of pavement damage at speeds of 5, 50 and 80 km h-1 under zero and uniform wander modes. Results show that at super slow speeds of 5 km h-1, at dual wheel moving at zero wander mode, decrease in fatigue life of the pavement is 3.5 years, which is 1.45 times more than the dual wheel moving at uniform wander and 3.4 times more than wide tire moving at uniform wander mode. The difference between fatigue damage at different lateral wander modes is prominent at speeds greater than 50 km h-1. A wide tire performs better than the dual wheel under zero wander configurations.
Open Access: Yes
Analysis of composite bridge deck considering the effects of concrete cracking
Publication Name: Pollack Periodica
Publication Date: 2022-12-31
Volume: 17
Issue: 3
Page Range: 53-58
Description:
Cracking in composite steel-concrete bridge decks is a common problem in civil engineering. Before, or shortly after, the bridge is subjected to live loads; various levels of cracking can appear, mostly due to plastic shrinkage and temperature effects. This paper presents an investigation of the behavior of cracked concrete in a composite deck slab of a railway bridge supported by steel girders using the finite element method. Eurocode 4-2 proposes a few simplified methods for calculating shrinkage and cracking effects in concrete. Through the proposed methods of analysis, an analytical simulation of a continuous composite steel-concrete bridge deck is performed and some practical recommendations for analyzing beam girders of this type are given.
Open Access: Yes
Application analysis of time stepping methods for impact problems
Publication Name: Pollack Periodica
Publication Date: 2022-12-31
Volume: 17
Issue: 3
Page Range: 30-35
Description:
Dynamic contact and impact problems are widely applicable. An accurate solution method for these kinds of problems can be used in many fields of mechanical engineering (e.g., cutting metalwork, cogwheel drives, etc.). However, the proper handling of the contact is problematic, as there emerges a substantial amount of nonlinearity in the displacement field. Therefore, a spurious high frequency oscillation is present in the solution. These oscillations must be avoided, as divergence can easily occur in the contact algorithm due to them. In order to eliminate this effect, the applied numerical method must be chosen and set properly. In this study, a comprehensive guide is provided for the appropriate selection of the proper numerical method and its parameters.
Open Access: Yes
Impact of environmental conditions on the distribution of insect pests in Nitra region vineyards (Slovakia)
Publication Name: Geographia Cassoviensis
Publication Date: 2022-12-30
Volume: 16
Issue: 2
Page Range: 130-146
Description:
The presented study introduces the most common and significant insect pests of the grapevine (Vitis xinifera) in Slovakia, specifically the occurrence of the European grapevine moth (Lobesia botrana) and the American grapevine leafhopper (Scaphoideus titanus). Historical records set prerequisites to studying the complex interactions between the pests and their host plant. If they are not understood sufficiently, they may have devastating consequences on the grape-growing. The research was carried out in the model vineyards in Jelenec, Ladice and Topol'čianky during the period from April to September 2019 and 2021. Jelenec and Ladice had six monitoring sites, Topol'čianky had seven monitoring sites. Data were collected in approximately 30-day cycles. The aim of research was to monitor the incidence of insect pests in selected vineyards and identify' their relation to environmental conditions. Pheromone traps were used throughout the research. The insect traps in combination with species-specific pheromone represent a reliable method for the pest monitoring. Based on aim studying the link between insect pests and climate conditions, traps were dispersed at the place of installation of the microclimatic dataloggers and the automatic stations. Data on the occurrence of the pests were subsequently evaluated in the context of the climate variability (temperature, wind speed, precipitation) and distance of the locality from the forest using Redundancy Analysis. It was confirmed that the insect pests are unequally distributed in the studied region and also inside the vineyards. Using Redundancy Analysis, we were able to explain the bonds in a maximum of 40% insect pests-environmental factors relationships. This research results show the need for regular monitoring of insect species, taking into account microclimatic as well as other ecological factors to optimize agrotechnical interventions.
Open Access: Yes
DOI: 10.33542/GC2022-2-04
The Role of food aid and livelihood interventions in mediating the relationship between household's resilience and economic empowerment
Publication Name: Economic Annals Xxi
Publication Date: 2022-12-27
Volume: 194
Issue: 11-12
Page Range: 151-163
Description:
The concept of resilience has been utilized to examine more complex ecological and socioeconomic systems such as agri-food systems in developing countries. Gaza has one of the high unemployment rates globally, therefore keeping people imprisoned in poverty and dependent on external support to existing. The strategy for poverty reduction in Gaza primarily consists of giving food aid or multi-purpose cash-based assistance and livelihood projects; nevertheless, this does not reduce unemployment or poverty in the long term. Non-Governmental Organizations (NGOs) have increased their efforts to provide more effective and comprehensive interventions to the affected populations, especially in the Gaza Strip. The research implemented a quantitative methodology distributed to over 300 household benefited from food aid and livelihood interventions through the NGOs in Gaza Strip. The questionnaire had been constructed based on the Likert Scale ranging from 1 (Strongly Agree) to 5 (Strongly Disagree). The data had been treated using SPSS statistical tool and AMOS for structural equation modeling and analysis to study the mediating effect of food aid and livelihood interventions on the relationship between household resilience and economic empowerment in the Gaza Strip. The research found that the resilience ability of many families in the Gaza Strip has increased because of the humanitarian assistance provided by NGOs, which lead to reducing poverty and household resilience plays a vital role in minimizing poverty and alleviating suffering through empowering and engaging them in the economy. The research also found that food aid tends to critically impact the relationship between household resilience and economic empowerment. NGOs play an essential role in engaging the poor in the economy through providing food security and encouraging new investments and efforts to improve help effectiveness via greater coordination among players involved in the implementation and better planning, targeting, and providing aid to people in Gaza Strip. The research findings also showed that livelihood interventions mediate the relationship between household resilience and economic empowerment in Gaza Strip. The structural model supports that the livelihood interventions modulated the association between household resilience and economic empowerment.
Open Access: Yes
DOI: 10.21003/EA.V194-19
