Olha Kovalchuk

Olha Kovalchuk
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Olha verified their affiliation via an institutional email.
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Olha verified their affiliation via an institutional email.
  • PhD in Physics and Mathematics
  • Professor (Associate) at West Ukrainian National University

About

121
Publications
16,512
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232
Citations
Current institution
West Ukrainian National University
Current position
  • Professor (Associate)

Publications

Publications (121)
Conference Paper
Economic uncertainty poses a significant challenge for decision-makers across the public and private sectors. While uncertainty is an inherently nebulous concept, developing consistent quantitative measures allows for rigorous analysis of its impacts. The World Uncertainty Index (WUI) provides a standardized quarterly index of uncertainty levels fo...
Article
Full-text available
Internal security of the state is one of the prerequisites for sustainable development. To ensure the public safety and personal security of citizens, it is necessary to develop effective measures to reduce crime and prevent crime in the future. The starting point for the development and practical implementation of an effective strategy to combat c...
Article
Full-text available
Digital trends like blockchain have led to cryptocurrency payments becoming popular in e-commerce. While cryptocurrencies have benefited users, they have also attracted criminals who use them to commit cyberattacks and harm security. In this research paper, we present an analysis of the following factors that can strongly influence the development...
Conference Paper
The key aspect of the content analysis of court decisions is the identification of interesting relationships between the circumstances of the case and the outcome. This article proposes an innovative approach that combines the use of a GPT-4 language model from the OpenAI API to generate the necessary facts from unstructured text documents of court...
Article
Стаття присвячена виявленню закономірностей та тенденції скоєння кримінальних правопорушень за допомогою аналізу асоціаційних правил. Емпіричною базою дослідження є інформація про 1975 кримінальних правопорушень, скоєних у Тернопільській області у період з 2012 по 2023 роки. Аналіз проведено на основі даних про крадіжки, пограбування та незаконне з...
Conference Paper
The global rise in crime rates is a result of the ineffectiveness of the traditional punishment system and the need to develop new approaches to applying relevant punitive measures to criminals, taking into account their level of danger to society. This paper presents a classification Decision Trees model to identify significant factors influencing...
Article
У статті здійснено комплексний аналіз етичних викликів застосування генеративного штучного інтелекту (ШІ) у судочинстві та запропоновано інноваційний підхід до їх подолання. Визначено ключові етичні проблеми, такі як забезпечення автентичності, прозорості, справедливості та протидія упередженості. Розроблено концептуальну модель для вирішення виявл...
Article
The research proposes a comprehensive approach to modernizing the information and legal support (ILS) of the judicial system of Ukraine, given European integration processes and the war of Russia against Ukraine. The need for substantial modernization of existing court automation systems to integrate with European systems and improve analytical cap...
Article
У статті досліджено інформаційно-правовий аспект використання інформаційних технологій для забезпечення відповідальності росії за воєнні злочини, скоєні в Україні. Досліджено переваги та небезпеки застосування новітніх технологічних рішень та інструментів, що активно використовуються українськими правоохоронними органами для документування злочинів...
Article
Full-text available
The modern information society requires effective digital justice based on innovative technologies. This research aims to create machine-learning algorithms to evaluate the likelihood of prisoners reoffending, utilising their socio-demographic attributes and past criminal history. In this paper, the experimental method, modelling method, forecastin...
Article
Full-text available
The article examines the issue of bringing russia to justice for mass war crimes, crimes against humanity and acts of aggression committed during the full-scale invasion of Ukraine. The purpose of the work is to analyse the available legal instruments, to formulate a comprehensive approach to solving this problem and to search for effective informa...
Article
Full-text available
ORCID ID: https://orcid.org/0000-0002-4100-0723 5 Doctor of Philosophy in the Field Abstract In the modern dynamic world, crime is becoming increasingly technologically supported and transnational. This demands that the justice systems of different countries apply innovative approaches and state-of-the-art information technologies to effectively co...
Article
In the modern dynamic world, crime is becoming increasingly technologically supported and transnational. This demands that the justice systems of different countries apply innovative approaches and state-of-the-art information technologies to effectively combat it. The presented research proposes a new proactive approach to identifying crime trends...
Article
Full-text available
Aim: The aim of the article is to analyze the legal aspects and mechanisms of confidential medical information protection about an individual in the health care sphere in Ukraine. Materials and methods: During the scientific research, various methods of cognition of legal phenomena were used. Among the general scientific approaches, the dialectical...
Article
Full-text available
The rapid increase in crime rates in many countries is evidence of the ineffectiveness of the current punishment system and the need to rethink the existing approach to applying punitive sanctions to criminals, taking into account the threat they pose to others. This study aims to build an analytical model for an objective assessment of the level o...
Article
У статті застосовано мультидисциплінарний підхід, що поєднує методи інформаційних технологій (ІТ) та юридичної науки для обробки та аналізу правової інформації. Метою є отримання нових знань для ухвалення рішень у кримінальному судочинстві, зокрема щодо визначення ступені загрози для суспільства, яку становлять ув’язнені. Використано метод аналізу...
Article
Full-text available
This work aims to study the organizational and legal aspects of implementing the latest information technologies (IT), including artificial intelligence (AI), in the justice system. The study was based on a comprehensive approach that integrated analytical methods, comparative analysis, the case study method, and risk assessment. It is determined t...
Article
Full-text available
The rapid increase in crime rates in many countries is evidence of the ineffectiveness of the current punishment system and the need to rethink the existing approach to applying punitive sanctions to criminals, taking into account the threat they pose to others. This study aims to build an analytical model for an objective assessment of the level o...
Article
Full-text available
The research proposes a comprehensive approach to modernizing the information and legal support (ILS) of the judicial system of Ukraine, given European integration processes and the war of Russia against Ukraine. The need for substantial modernization of existing court automation systems to integrate with European systems and improve analytical cap...
Article
Full-text available
Aim: The aim of the article is to analyze the legal aspects and mechanisms of confidential medical information protection about an individual in the health care sphere in Ukraine. Materials and methods: During the scientific research, various methods of cognition of legal phenomena were used. Among the general scientific approaches, the dialectical...
Conference Paper
The aggravation of the political crisis and the increase in geopolitical conflicts destabilize the world economy and create serious challenges for the national security of all countries of the world. Today, a new theoretical and methodological approach to understanding economic security, which is an important dimension of national security, is need...
Article
Full-text available
Problem statement. Artificial intelligence (AI) has become one of the greatest achievements of modern technological progress and the foundation for the creation of electronic justice. Many advanced countries around the world are already using it to optimize their judicial systems. Ukrainian justice is at the initial stage of digital transformation...
Article
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The article comprehensively investigates the information and legal challenges faced by the justice system when making effective decisions, and proposes conceptual foundations for developing reliable information support for this critically important process. The authors emphasize the role of information and legal support in ensuring impartiality, su...
Article
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No mundo moderno e dinâmico, o crime está a tornar-se cada vez mais transnacional e apoiado tecnologicamente. Isto exige que os sistemas judiciais de diferentes países apliquem abordagens inovadoras e tecnologias de informação de última geração para combatê-lo eficazmente. A pesquisa apresentada propõe uma nova abordagem proativa para identificar t...
Article
Full-text available
Research background By launching a war against Ukraine, Russia changed the entire world system and demonstrated the ineffectiveness of the global security system. Today it is necessary to look for effective solutions to support the adoption of security decisions and develop effective strategies for the formation of a new architecture of the interna...
Article
Full-text available
Despite numerous efforts aimed at ensuring the protection of the accused, and despite the understanding of the effectiveness of preventive measures in contrast to punitive sanctions, modern industrialized society in most cases decides to apply imprisonment to persons convicted of crimes. Convicted persons face increasing legal and social prejudice,...
Chapter
Security concerns have emerged as a paramount priority in contemporary society. The cornerstone of the evidentiary foundation in criminal investigations is the confession of the defendant. To uncover less apparent factors influencing the likelihood of a suspect's confession at various stages or time intervals throughout the trial, survival analysis...
Article
Full-text available
The existence of modern humanity directly depends on environmental security. Human society, biodiversity, ecosystems, and climate safety are interdependent. The anthropogenic influence that causes irreversible climate change threatens both the ecosystem’s existence and humans’ survival. To maintain a balance between human well-being and a safe envi...
Article
The research aims to study the features of digitalization of law enforcement agencies as a component of the digital transformation of the judiciary and to develop an innovative information model (IM) for creating reliable information support (IS) for law enforcement agencies. The main objectives are to analyze the specifics of the digitalization of...
Article
Full-text available
Abstract. Purpose. This article aims to substantiate the feasibility and ways of implementing the smart justice paradigm in Ukraine in the context of the digitalization of judicial processes and the improvement of the functioning of the judicial branch of government. The article aims to explore the concept of smart justice, identify prospects for i...
Conference Paper
In this paper, we presented the results of the application of survival analysis models for estimating and forecasting the risks of pleading guilty to criminal offenses under conditions of incomplete data. The technique of life tables was used to calculate the probability of guilty pleas by suspects at a specific stage (time interval) of the trial....
Article
In a modern digital society, information technologies play a crucial role in security policy. The increase in the number of criminals and the expansion of the range of crimes committed by them, which is observed all over the world, poses serious risks to the personal safety of citizens, the internal security of the country, and international securi...
Conference Paper
Climate change, the COVID-19 pandemic, the 2021 oil crisis, and the Russian-Ukrainian war have created serious risks for the development of polycrisis. The military invasion of the Russian Federation created mega threats to the security of the entire world. The issue of global food security is particularly acute. The paper attempts to obtain prelim...
Conference Paper
The article adduces the results of using modeling methods to assess the role of various factors in the progression of cervical pathology. Factor analysis was used to identify significant factors characterizing the studied process – cervical pathology in the conditions of various violations of the vaginal biocenosis, the presence of HPV infection, a...
Article
Correspondence analysis was used in the work to identify associations between criminal recidivism and the following elements of criminal histories of criminals: sex, age at the time of the first conviction to the actual degree of punishment, age at the time of the first conviction to the suspended or actual sentence, educational level, type of empl...
Article
Full-text available
In this research study, the authors obtained the preliminary evaluation of the impact detection of vaccinations against COVID-19 in the EU-27. The empirical basis of the study was the daily number of COVID-19 cases, vaccinations, hospitalisations, and deaths in the EU countries from March 2020 to March 2022. Rules of association were used to identi...
Conference Paper
Information technologies, such as big data analytics (data mining, and predictive analytics) are rapidly developing and penetrating into critically important areas of modern technocratic society, including law enforcement and security sectors. Successful applications of artificial intelligence (AI) are able not only to provide informational support...
Conference Paper
Information technologies, such as big data analytics (data mining, and predictive analytics) are rapidly developing and penetrating into critically important areas of modern technocratic society, including law enforcement and security sectors. Successful applications of artificial intelligence (AI) are able not only to provide informational support...
Article
Full-text available
Increasing internal state security requires an understanding of the factors that influence the commission of repetitive crimes (recidivism) since the crime is not caused by public danger but by the criminal person. Against the background of informatization of the information activities of law enforcement agencies, there is no doubt about the expedi...
Article
Full-text available
In the digital society, states’ information security has become one of the key elements of ensuring the competitiveness and sustainable development of the state, guaranteeing its integrity and security in general. An important component of state security is the internal security of the state, which must ensure the personal and public safety of its...
Article
The article discusses the use of a prospective problem-oriented approach to shaping the information support for judicial and law enforcement agencies. The rapid development of information technologies is transforming the criminal environment. Criminals increasingly utilize the digital space, leaving numerous diverse electronic traces within it. The...
Book
To ensure international security and effective competition for global resources, countries around the world are creating an international image (nation brands), on which their influence in the international arena depends. This brand is influenced by politics, governance and socio-economic development. The attractiveness of nation brands is a necess...
Article
To ensure effective competition for global resources, countries around the world are creating an international image (nation brands), on which their influence in the international arena depends. This brand is influenced by politics, governance and socio-economic development. The attractiveness of nation brands is a necessary condition for the compe...
Article
Full-text available
Research background: The economics of incarceration is having an increasing impact on the economies of the world due to the rapid growth in the number of prisoners in the world The search for effective solutions that can help reduce government spending on prisoners in penitentiaries and at the same time ensure the safety of society is becoming incr...
Book
У збірнику тестових завдань «Логіка. Абстрактне мислення» представлено широке коло типових тестових завдань для перевірки здатності генерувати та критично оцінювати гіпотези за строго визначених умов. Розв’язання завдань такого типу розвиває у студентів здатність розуміти та мислити складними поняттями, які, хоча й є реальними, не пов’язані з конкр...
Conference Paper
Big data analytics can be used for pattern recognition, tracking and social media discovery. This violates the right to confidentiality to some extent, but it still makes it possible to make the “Solomon's decision” even before there is not a single living witness of the modern genocide left. In addition, confidential data can be encrypted, not sto...
Article
Based on statistical survival analysis, the assessment and forecasting of the risks of pleading guilty to criminal offenses in conditions of incomplete data are carried out. Risk function is constructed to estimate the probability of confession of suspects at certain stages (time periods) of the trial. The Kaplan-Meier model is applied to calculate...
Thesis
Багато проблем, з якими ми стикаємось у нашому житті, є результатом недостатнього розуміння того, що є справжнім, істинним та суттєвим. Не часто ми можемо знайти час, щоб віддатись роздумам про реальність. У сучасному динамічному, надмірно стимульованому суспільстві все відбувається надто швидко, а наша реакція на події базується на заздалегідь ств...
Book
У посібнику висвітлено питання розвитку та застосування навичок критичного мислення для аналізу, оцінювання, побудови та спростування аргументів, що стосуються юридичної справи; здатності аналітично мислити, аналізувати та обгрунтовувати юридичні положення, статути, кодекси, постанови, акти і визначати правові варіанти сценарію; уміння абстрактно м...
Conference Paper
Багато проблем, з якими ми стикаємось у нашому житті, є результатом недостатнього розуміння того, що є справжнім, істинним та суттєвим. Не часто ми можемо знайти час, щоб віддатись роздумам про реальність. У сучасному динамічному, надмірно стимульованому суспільстві все відбувається надто швидко, а наша реакція на події базується на заздалегідь ств...
Conference Paper
The basic aspects of economy of modern international terrorism are considered in the article. Drawing on the unique set of data about terrorism and basic indexes of economies in most countries, theoretical model of latent factors causing observed variables was built. Meaningful factors that influence economic development of the states being attacke...
Conference Paper
Information technologies play a qualificatory role in forming of most risks for safety of citizens and governments of the states of the world. The attacks of Cyberbuck became an effective instrument both for large politics and for terrorists.This article presents analysis of basic threats, that present cybercrimes for modern society, and intercommu...
Conference Paper
The article represents the results of using the data mining algorithms to determine probability of occurrence migraine symptoms related to changes of menstrual cycle parameters in women of reproductive age. The analysis was carried out on the basis of logistic regression models, developed by three different methods. Relations between menstrual amou...
Conference Paper
Full-text available
Possibilities of application of information technologies of artificial intelligence and big data for the increase of efficiency of the criminal justice are considered in article. The basic aspects of the use of artificial intelligence algorithms in predictive policing, in particular risk-assessment algorithms based on machine learning systems that...
Conference Paper
Сучасний освітній процес стикається з безпрецедентними змінами. Стрімкі темпи інновацій у таких сферах, як штучний інтелект, Інтернет Речей, та мінливі смарт-технології ставлять нові вимоги до випускників вишів. Алгоритми машинного навчання сьогодні використовують навіть у такій інтелектуальній сфері, як юриспруденція [1]. Роботодавці прагнуть отри...
Article
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This article concerns research conducted onthe casual connections between modern global migratory processes and basic socio-economic and safety indexes for countries around the world countries. On the basis of new official dataset there was developed a cluster model of countries distributed according to the basic indicators which characterize migra...
Conference Paper
Full-text available
Ми живемо в епоху, яка дедалі більше визначається стрімкими масштабними змінами. Технологічний прогрес та четверта промислова революція змінюють способи праці і самі завдання, які виконують фахові спеціалісти. До недавнього часу автоматизації, в основному, підлягали некваліфіковані або рутинні завдання. Але стрімкий прогрес робототехніки та штучног...
Book
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У підручнику розглянуто питання застосування математичних методів та моделей у практиці дослідження міжнародних ситуацій і процесів для встановлення взаємозв’язків між суб’єктами міжнародних відносин, виявлення неочевидних ресурсів та можливостей взаємодії на міжнародній арені, прогнозування майбутніх станів та перевірки гіпотез про ймовірні сценар...
Conference Paper
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Упродовж багатьох років уряди держав та міжнародні організації вирішують проблему глобальних загроз існуванню людства. Екстремальні зміни клімату, міжнародні військові конфлікти, терористичні атаки, кіберзагрози, неефективність управління на державному рівні, зростання нерівності, корупція, тіньова економіка, масове безробіття спричиняють зростання...
Conference Paper
Full-text available
The paper studies possibilities of application of data mining technology for determination of optimal functioning conditions of effective business-environment on national level. Decision Tree is built according to the levels of The Global Competitiveness Index for the countries of the world. The basic efficiency indexes of public business policy, t...
Article
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Виявлено основні проблеми «вимірювання» економічної складової глобального сталого розвитку сучасного суспільства, вдосконалено існуючі системи індикаторів для адекватного кількісного оцінювання економічного зростання. Розроблено оптимальні математичні моделі комплексного оцінювання економічних вимірів глобального сталого розвитку. Зазначено, що пре...
Article
Full-text available
The problem of ecological risks that in 2018 are said to be the basic factors of providing of steady development of the world countries and will prevail in a 10-years-old prospect is considered in the article. The basic dangers of technogenic influence on the climate change are studied. The question of efficiency of application of the climatic mode...
Conference Paper
Full-text available
Останніми роками виникли численні питання і щодо того, як організації ставляться до конфіденційності інформації своїх користувачів. Часто особисті дані обробляються без згоди їхніх власників через політичні та економічні причини. Сьогодні немає консенсусу щодо того, хто несе відповідальність за дотримання конфіденційності даних. Ключовою проблемою...
Article
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The problem of global climate change, one of the major calls of modern civilization, is considered in the article. The analysis of arguments in relation to a hypothesis about technogenic influence on the global warming and anomalous natural phenomena is conducted. Documentary facts and data about possibility of development and application of secret...
Article
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The article reveals the problems of “measuring” economic dimensions of global sustainable development of modern society, improves the existing set of indicators for an adequate quantitative assessment of economic growth and develops optimal mathematical models for integrated assessment of economic dimensions of global sustainable growth. The subjec...
Article
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social catastrophes. The complexity and interactivity of solving the interrelated problems of sustainable devel-opment that can be used to make compromises and improve the decision-making process in complex uncertain conditions require the use of mathematical and computational methods. The correspondence analysis is used to identify the relationshi...
Conference Paper
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This work examines possibilities of application of big data information technologies for realization of effective political digital campaigns on the basis of analysis of information from virtual networks and hidden influence on acceptance of irresponsible decisions by publicity.
Article
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Possibilities of application of computer design and mathematical instruments were investigated for the complex measuring of firmness. Factor model is built by means of main components method according to the values of basic statistical indexes of sustainable development of the world countries for 2016. Specification of discriminatory model is worke...
Article
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2018.-Том 28.-№ 1.-С. 71-78.-ISSN 1993-0259. Анотація У статті розглянуто можливості застосування класичних інструментів аналітичних методів та методів інтелектуального аналізу даних для моделювання глобального сталого розвитку. Для розподілу країн світу на групи за показниками, які традиційно виділяють для вивчення сталого розвитку, проведено клас...
Article
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У статті висвітлено основні проблеми «вимірювання» показників сталого розвитку і побудови системи адекватних індикаторів для його кількісної оцінки. На основі статистичних даних офіційних джерел проведено канонічний аналіз для виявлення основних залежностей між набором найавторитетніших рейтингів сталого розвитку держав та найпоширенішими вимірника...
Conference Paper
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Сьогодні комунікація, як і передача інформації, є як ніколи таргетованими. Вона індивідуалізована до кожної окремої особистості. Потенційний споживач ніколи не буде отримувати рекламу товарів та послуг, якими він не цікавився. Прорив у рекламних технологіях можливий завдяки нестандартному підходу до інтернет-маркетингу, на основі технологій big dat...
Article
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The article discusses the possibilities of use of classical instruments of analytical methods and data mining methods for global sustainability modelling. To divide countries into groups according to the indicators that are traditionally allocated for sustainability studying, it is carried out the cluster analysis by k-medium method, which resulted...
Chapter
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Improving energy efficiency is a key element of sustainable energy policy which aim is to increase energy security, reduce dependence on energy supplies, reduce the environmental impact of the energy sector, and reduce energy costs resulting in increased competitiveness of the European economy. The EU Directive of 25 October 2012 on energy efficien...
Article
Full-text available
У статті проведено дослідження можливостей застосування новітніх технологій big data для обробки даних у сфері маркетингу та суспільних комунікацій. Розглянуто нові методики консолідації та аналізу великих масивів інформації з павутини Інтернет для формування індивідуальних профілів користувачів віртуальних мереж з метою вивчення поведінки спільнот...
Article
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The article is considering the question of application of modern mathematical methods in order to evaluate the level of sustainable development of countries. The analysis of indexes that traditionally applied for determination of degree of socioeconomic development of separate regions is conducted. The model analysis of sustainable development of E...
Book
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Висвітлено основні теоретичні питання та підходи до «вимірювання» показників сталого розвитку і побудови адекватних індикаторів для його кількісної оцінки. Розглянуто сучасні технічні інструменти застосування традиційних аналітичних, математичних методів та обчислювальних алгоритмів для моделювання сталого розвитку, наведено результати емпіричних д...
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In the proposed article, we identified possible dependencies of the price of electricity for households and energy intensity of the economy of the EU Member States. For each of the EU countries we have established limiting values of electricity prices for households in which the energy intensity of the economy is likely to reduce. Association Rules...
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We live in a time that is often called the information era. To make optimal decisions, large amounts of information need to be processed, which is often difficult. Particularly relevant today are the big data and data mining information technologies [5]. They revolutionize approaches to information analysis and decision-making. Data management usin...
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The article reveals the essence of foreign direct investment (FDI) and examined their classification. For Asia investigated the relationship between the foreign direct investment, net inflows and indicators such as exports of goods and services, GDP, goods imports, gross savings, household final consumption expenditure, high-technology exports and...
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The article considers essence of shadow economy together with milestones in the studying this phenomenon. To identify the main factors influencing changes to the levels of the shadow economy coefficient (SE, in % of GDP) in the software environment of the product STATISTICA, a factorial analysis of the dependence of SE from 29 indicators for the EU...
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У статті запропоновано економетричну удосконалену модель оцінювання і прогнозування людського розвитку на основі глобальних індикаторів. Проаналізовано основні індикатори, якими вимірюють рівень життя: Індекс людського розвитку; Індекс людського розвитку, скоригований з урахуванням соціально-економічної нерівності; Індекс гендерної нерівності та ін...

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