Peculiarities of countering legalization of criminal income with the help of virtual assets: legislative regulation and practical implementation

Purpose The purpose of this paper is to define and characterize peculiarities of countering the legalization of criminal income with the help of virtual assets. Design/methodology/approach The analysis of the legislative delineation and the realities of the practical implementation of the features of combating the legalization of criminal proceeds with the help of virtual assets in Ukraine was carried out with the help of general scientific methods of cognition. The systematic method helped identify the main ways to legalize criminal proceeds with the help of virtual assets. Using legal techniques, proposals will be formulated to amend draft legislation on legislative regulation of the concept of “virtual assets”. The generalization method was used to develop ways to combat the legalization of criminal proceeds with the help of virtual assets. The method of legal forecasting was used to substantiate the proposed areas of combating money laundering with the help of virtual assets. The method of extrapolation will be used to determine the possibility of implementing foreign experience in domestic practice to combat money laundering with the help of virtual assets. Findings One of the relatively new and increasingly popular ways of money laundering is to commit this act with the help of virtual assets. Methods of money laundering through virtual assets include services for the conversion of virtual assets, P2P exchange, gambling sites, virtual asset mixers and the use of fictitious internet sites selling digital goods. The difficulty of counteracting the legalization of criminal proceeds with the help of virtual assets is primarily due to the lack of legislative regulation of the concept of “virtual assets” in Ukraine. Yes, the draft law is currently being finalized. Besides, even the current edition is not evaluated by the authors as perfect. After all, the issue of the content of the concept of “virtual assets” and its relationship with virtual securities, cryptocurrency and virtual property remains unresolved. Originality/value One of the relatively new and increasingly popular ways of money laundering is to commit this act with the help of virtual assets. Methods of money laundering through virtual assets include services for the conversion of virtual assets, P2P exchange, gambling sites, virtual asset mixers and the use of fictitious internet sites selling digital goods. It is essential to intensify financial monitoring by financial control bodies over the activities of conversion service centers. Moreover, given the transnational nature of legalizing criminal proceeds, especially those committed through virtual assets, international cooperation in combating this crime is vital. The authors have proposed specific measures to ensure that a coherent consolidation of efforts can be built.

The security of the BLT signature scheme with practical implementation issues

Abstract—KSI infrastructure is a time-stamping and server-based signature solution deployed in Estonia to provide the integrity and timing information of data. With the goal of providing a personal signature that does not depend on the long-term secrecy of signing keys, Buldas et al. have proposed a BLT scheme that is based on the KSI infrastructure. Although Buldas et al. have shown that the (modified) BLT scheme is secure in the theoretical model, the fact that its practical implementation does not follow that description. In this paper, we will evaluate and provide two attack scenarios if the BLT schema is implemented in such a way, and then propose a solution to that problem. Tóm tắt—Hạ tầng KSI là một giải pháp chữ ký dựa trên máy chủ chứa thông tin thời gian được thử nghiệm triển khai ở Estonia để cung cấp tính toàn vẹn và thông tin về thời gian của dữ liệu.Với mục tiêu tạo ra một chữ ký số cá nhân mà không phụ thuộc vào tính bí mật lâu dài của các khóa ký, Buldas và các cộng sự đã đề xuất lược đồ BLT dựa trên nền của hạ tầng KSI. Mặc dù, Buldas và các cộng sự đã chỉ ra rằng lược đồ BLT (sửa đổi) là an toàn trong mô hình lý thuyết, nhưng triển khai thực tế của lược đồ này không hoàn toàn tuân theo mô tả đó. Trong bài báo này, chúng tôi sẽ đánh giá và đưa ra hai kịch bản tấn công nếu lược đồ BLT được triển khai như vậy, và sau đó đề xuất một giải pháp cho vấn đề đó.

Auditing Risk Prediction of Long-Term Unemployment

As more and more governments adopt algorithms to support bureaucratic decision-making processes, it becomes urgent to address issues of responsible use and accountability. We examine a contested public service algorithm used in Danish job placement for assessing an individual's risk of long-term unemployment. The study takes inspiration from cooperative audits and was carried out in dialogue with the Danish unemployment services agency. Our audit investigated the practical implementation of algorithms. We find (1) a divergence between the formal documentation and the model tuning code, (2) that the algorithmic model relies on subjectivity, namely the variable which focus on the individual's self-assessment of how long it will take before they get a job, (3) that the algorithm uses the variable "origin" to determine its predictions, and (4) that the documentation neglects to consider the implications of using variables indicating personal characteristics when predicting employment outcomes. We discuss the benefits and limitations of cooperative audits in a public sector context. We specifically focus on the importance of collaboration across different public actors when investigating the use of algorithms in the algorithmic society.

Practical implementation of diode SPICE model with reverse recovery

<div>This paper presents a way to generate the correct SPICE sub- circuit using only parameters from the manufacturer's diode datasheet. Characterization tool software was created and tested and is now freely available to download and use.</div>

Applications of blockchain in government education sector: a comprehensive review and future research potentials

Purpose With the time and increase in usage of information technology (IT), blockchain technology is gaining immense attention from researchers, academicians, and practitioners because of its distinctive features such as transference, security and data reliability. The purpose of this study is to endow with a systematic review of literature on blockchain in context to the government education sector in terms of its usage, benefits, obstacles and practical implementation in future areas in education. Design/methodology/approach The study adopted a bibliometric visualization tool to classify data in yearly publications, highly cited journals, prominent authors, leading publications in countries and institutions and highly cited papers – the data was extracted from the SCOPUS database by using relevant keywords. Thus, the following research questions were developed: How has blockchain technology been used in the government educational sector? What are the benefits examined in the field of education? What were the problems/obstacles faced using the technology in a government education structure? Findings The findings identify and provide a comprehensive review of the technique regarding the present research stream in terms of highest publication, author, journal, subject-wise and relevance of the technology in government education structure. Thus, the future research potential of the technology in the education sector is much more as it is in the initiation stage. A lot of opportunities and benefits need to be extracted at large. Research limitations/implications The present findings of the study provide a base work for government education institutions, policy developers and researchers to investigate other areas where the technology can be implemented. Finally, more technology applications will develop strategies for proper data management and cost-effective decisions. Originality/value This study explains the relevance of technology in education through bibliometric visualization. The study adopted the review and significance of blockchain technology in the government education sector by identifying its benefits, current scenario, application and future research potential areas.

Incorporating Sustainability and Maintenance for Performance Assessment of Offshore Oil and Gas Platforms: A Perspective

The existence of external two-fold pressure regarding competitiveness and sustainable development in a capital-intensive industry supports the need for sustainable performance. However, endeavors to create a sustainable framework to measure the performance of the oil and gas (O&G) industry are mostly devoted to the production and supply chain of petrochemical products and rarely focus on a maintenance perspective. Motivated by such scarcity, the goal of this research was to discuss and articulate the performance assessment framework by integrating concepts of maintenance and sustainability in the O&G industry. This study proposed the use of a range of performance measures for assessing sustainability on offshore production and drilling platforms. The conceptual framework consists of four aspects of sustainability categorized into technical, environmental, social, and economic dimensions. Each measure was assigned according to its relevance at the strategic, tactical, and functional levels of maintenance decision making. The conceptual framework resulted in hierarchical clusters of twelve strategic indicators. These indicators consist of conventional measures as well as new ones relating to the safety and reliability on offshore platforms. The potential contribution of the present study is found in its intention to empower a better understanding of sustainable maintenance and encourage those making decisions about practical implementation within the O&G industry. This paper culminates with directions for future studies.

Effective Practices of Macroprudential Stress Testing as a Tool of Increasing the Stability of Russian Financial System in the Context of Macroeconomic Shocks

The article examines the evolution of the prudential approach to banking regulation, examines the practical contribution of the Basel Committee on Banking Supervision to the development and implementation of internationally unified practices and procedures for stress testing and supervision. The authors share the point of view that the existing methods and practices of stress testing still need improvements and methodological improvements, since they regularly allow the practical implementation of adverse scenarios leading to financial shocks and global crises. As a significant disadvantage of many actively used stress testing models, it is noted that they are often focused on complex, highly bureaucratic procedures for the preparation and analysis of financial statements, the main purpose of which is to assess the probabilities and sizes of losses and identify scenarios for the development of the situation for each specific bank, and no risks for the financial system as a whole. The authors come to the conclusion that it is advisable to prioritize the use of alternative stress testing models in crisis and post-crisis conditions, the forecasts within which are based on the actual values of financial market indicators, macroeconomic variables, and other open data. Special attention is paid to the stylized CLASS model, based on simple econometric models, as well as stress testing the current market value of V-lab. Based on the results of the study, the authors come to a number of conclusions that the role of the macroeconomic component in the procedures, methods, and algorithms for macroprudential stress testing used in Russia should increase, the degree of involvement and the sphere of responsibility for its results of key institutional units of the public administration system should expand, and macroprudential stress testing itself should not be limited to supervisory stress testing in everyday practice.

Numerical study on stress paths in grounds reinforced with long and short CFG piles during adjacent rigid retaining wall movement

Ensuring the safety of existing structures is an important issue when planning and executing adjacent new foundation pit excavations. Hence, understanding the stress state conditions experienced by the soil element behind a retaining wall at a given location during different excavation stages has been a key observational modelling aspect of the performance of excavations. By establishing and carrying out sophisticated soil–structure interaction analyses, stress paths render clarity on soil deformation mechanism. On the other hand, column-type soft ground treatment has recently got exceeding attention and practical implementation. So, the soil stress–strain response to excavation-induced disturbances needs to be known as well. To this end, this paper discusses the stress change and redistribution phenomena in a treated ground based on 3D numerical analyses. The simulation was verified against results from a 1 g indoor experimental test conducted on composite foundation reinforced with long and short cement–fly ash–gravel (CFG) pile adjacent to a moving rigid retaining wall. It was observed that the stress path for each monitoring point in the shallow depth undergoes a process of stress unloading at various dropping amounts of principal stress components in a complex manner. The closer the soil element is to the wall, the more it experiences a change in principal stress components as the wall movement progresses; also, the induced stress disturbance weakens significantly as the observation point becomes farther away from the wall. Accordingly, the overall vertical load-sharing percentage of the upper soil reduces proportionally.