This article presents a systematic literature review of studies that have used data mining and learning analytics techniques to predict student performance. The review covers a period of 10 years (2011-2021) and examines a total of 50 papers from various sources. The results show that data mining and learning analytics techniques have been widely used to predict student performance in different educational contexts, including K-12, higher education, and online learning. The most commonly used data mining and learning analytics techniques were decision trees, logistic regression, neural networks, and support vector machines. The review identifies the main challenges and limitations of using data mining and learning analytics techniques for predicting student performance, including issues related to data quality, feature selection, model validation, and ethical considerations. The article concludes with recommendations for future research in this area.
This research delves into a holistic learning analytics approach aimed at enhancing writing skills in young children. Titled "Crafting Futures: A Holistic Learning Analytics Approach to Elevate Writing Skills in Young Children," the study explores the integration of technology and pedagogy to foster a comprehensive learning environment. Through the analysis of learning analytics data, this research seeks to illuminate the intricate dynamics of children's writing development, offering insights for educators, parents, and policymakers to nurture literacy effectively.
This article discusses the issues of composition and submission in the structure of a complex sentence. The article consists in identifying the features of the types of syntactic connections in the structure of a complex sentence.
Atherosclerosis is a chronic lesion of the arteries caused by the growth of multiple dense nodular thickenings of the walls of the artery (plaques), narrowing its lumen and contributing to the formation of a blood clot - a thrombus, which can clog the vessel. Atherosclerosis develops as a result of complex structural changes that occur in the intima (inner layer) and in the media (muscle layer) of the arteries, and it is associated with the accumulation of lipids and mucopolysaccharides in the blood vessels, the growth of connective tissue and the deposition of calcium. Cardiovascular pathology, and this is ischemic heart and brain disease, occlusive diseases of peripheral arteries, is the most common cause of morbidity, mortality and disability in the population of industrialized countries. According to the statistics of the World Health Organization, in the structure of total mortality in Russia, cardiovascular diseases account for 57%. Most of these cases are associated with diseases caused by atherosclerosis [3]. The development of atherosclerotic lesions of the vascular wall is a complex multi-stage process. It has now been established that even before endothelial damage, blood components begin to interact with the endothelial surface. In particular, low-density lipoprotein cholesterol (LDL-C) and their active component apolipoproteins are able to penetrate into the subendothelial space and, being oxidized, affect endothelial cells. In this regard, the initial stage of atherosclerosis is characterized as a response to the retention of atherogenic particles [2]. The main risk factors that play a significant role in endothelial damage are smoking, arterial hypertension and hypercholesterolemia. It has been shown that with an increase in cholesterol levels of more than 8.5 mmol/l, the risk of fatal cardiovascular complications increases by 4 times, when combined with arterial hypertension by 9 times, with smoking, the presence of hypercholesterolemia and arterial hypertension by 16 times [1]. The problem of primary and secondary prevention of ischemic stroke is not only medical, but also of great social importance, since patients who have had it become disabled in more than 80% of cases and often need outside help. Statins are considered highly effective drugs with the greatest evidence in reducing the risk of cardiovascular events in patients with coronary artery disease.
To determine the hydrodynamic parameters of the uninjured fellow eye of children with combined injuries of the organ of vision. A prospective analysis of the hydrodynamic parameters of the fellow eye according to Friedenwald was carried out in 18 patients (18 eyes) aged 3 to 10 years 2–3 and 45–50 days after primary surgical treatment (PSD) of a penetrating wound of the cornea, who were hospitalized in the ophthalmological department of the clinic Tashkent Pediatric Medical Institute. Group I included 8 (44%) children with the following diagnosis: “Combined injury of the organ
of vision. Contusion of the eyeball severe. Complex penetrating wound of the cornea. Group II included 10 (56%) patients with complex penetrating wounds of the cornea. 2–3 days after PST of the wound, group I showed a statistically significant increase in Pt by 2.04±0.03 mm Hg. compared with the control group, while 1–2 days after the first measurement and 45–50 days after PST, the indicators decreased, on average, by 4.4±0.02 mm Hg. without the use of antihypertensive drugs. Changes in the hydrodynamics of the eye in children of group II were not statistically significant. The results of the examination of children revealed a transient increase in tonometric intraocular pressure in the paired uninjured eye 2–3 days after PST of a penetrating wound of the cornea with combined injuries of the organ of vision.
"Anesthesiology and resuscitation is one of the most complex and difficult specialties, requiring broad erudition, deep knowledge and mastery of the hands at the same time from the doctor."
Improving the children's resuscitation service and improving the quality of care for children in critical condition is one of the main areas of healthcare in the Republic of Uzbekistan. The availability and quality of medical care at the resuscitation stage of treatment, regardless of the location of the patient, largely determines the outcome of the underlying disease. In children, due to anatomical and physiological features and rather significant differences in the nature of pathological processes, critical conditions occur much more often than in adults.
The article is devoted to the development of a mathematical model of the process of geometric nonlinear deformation of thin magnetoelastic plates of a complex structural shape based on the Hamilton-Ostrogradsky variational principle, and conducting computational experiments. In this case, the three-dimensional mathematical model was transferred to a two-dimensional view using the Kirchhoff-Liav hypothesis. Cauchy's relationship, Hooke's law, Lawrence's force and Maxwell's electromagnetic tensor were used to determine kinetic and potential energy and work done by external forces. The effects of the electromagnetic field on the deformation stress state of the magnetoelastic plate were observed, as a result, a mathematical model was created in the form of a system of differential differential equations with initial and boundary conditions for displacement. To solve the equation, a calculation algorithm was developed using the R-function, Bubnov-Galerkin, Newmark, Gaussian, Gaussian squares, and Iteration number methods. Calculation experiments were carried out in various mechanical states of the magneto-elastic plate, its borders were tightly fixed, one side was hinged and the other side was free, and numerical results were obtained. A comparative analysis of the results of the calculations was presented.
The mitral valve is a complex, complex anatomical structure that consists of 4 main components: FCMC, the valve leaflets themselves, tendinous chords and papillary muscles. Accordingly, the normal operation of the valve depends on the correct operation of each individual component, and the dysfunction of one of the structures can lead to disruption of the valve and the further development of insufficiency.
The concept of a "SMART" tourist area model for forming a cluster of pilgrimage sites has gained significant attention in recent years. This abstract presents an overview of a comprehensive model that combines the principles of SMART (Sustainable, Manageable, Adaptable, Resilient, and Technology-driven) tourism with the unique characteristics of pilgrimage sites. The model aims to enhance the overall visitor experience, ensure the sustainable development of pilgrimage destinations, and foster economic growth in the surrounding regions.
The proposed model incorporates various elements, including infrastructure development, smart technology integration, community engagement, and environmental preservation. It emphasizes the importance of sustainable practices in pilgrimage site management, such as efficient waste management systems, renewable energy utilization, and the promotion of eco-friendly transportation options. Additionally, the model integrates advanced technologies, such as mobile applications, augmented reality, and data analytics, to enhance visitor services, provide real-time information, and optimize resource allocation.
Community engagement plays a vital role in the model, involving the local population in decision-making processes, cultural preservation, and tourism development. By actively involving the community, the model aims to create a sense of ownership and responsibility among local stakeholders, leading to the preservation of cultural heritage and the empowerment of local economies.
Furthermore, the model emphasizes the importance of resilience, considering the potential challenges posed by natural disasters, overcrowding, and changing visitor demands. It incorporates strategies for disaster preparedness, crowd management, and diversification of tourism offerings to mitigate risks and ensure the long-term sustainability of the pilgrimage sites.
The proposed "SMART" tourist area model of forming a cluster of pilgrimage sites presents a holistic approach to pilgrimage tourism development. By integrating sustainability, technology, community engagement, and resilience, the model aims to create a harmonious balance between visitor satisfaction, environmental conservation, and socio-economic benefits. It serves as a guide for policymakers, destination managers, and stakeholders involved in the development and management of pilgrimage sites, contributing to the establishment of thriving and future-ready tourist areas.