bluuebunny/crossref_metadata_2025_split huggingface dataset:
The individual variability of the dentato-rubro-thalamic tract in the planning of stereotactic operations in patients with tremor
Authors: Kholyavin A. I. , Peskov A. V. , Berger A. O. 
Published: April 2024

Background. Stereotactic operations on the ventral‑intermediate nucleus of the thalamus (Vim) and the posterior subthalamic area (PSA) are used for the surgical treatment of tremor. Since these structures are invisible in standard magnetic resonance imaging (MRI) regimes, indirect stereotactic guidance is mainly used during operations. MRI tractography allows taking into account the individual variability of the target structures for tremor, visualizing the target directly, but this technique has not yet entered the routine practice of preparing operations.Aim. The aim of the work is to study the variability of the position of the dentato‑rubro‑thalamic tract (DRT), determined according to MRI tractography data, in relation to the main reference points for indirect stereotactic guidance, as well as to the visible landmarks on MRI in FGATIR mode, to assess the validity of the currently used methods of preparing operations in patients with tremor.Materials and methods. Probabilistic MRI tractography of DRT based on the HARDY protocol was performed in 34 patients. Additionally, 3D T1 tomograms were obtained with axial slices with an isotropic voxel size equal to 1 mm, as well as FLAIR sagittal slices with a thickness of 1.12 and a pitch of 0.56 mm. Eleven patients additionally underwent a series of MRI sections according to the FGATIR program with a thickness of 1 mm, without an intersectional gap.Results. A significant variability of the DRT position has been established both in the coordinate system of the anterior and posterior commissures, and in relation to standard targets for indirect stereotactic guidance. In addition, a visible interhemispheric asymmetry of the position of the tracts was revealed. The smallest degree of deviation from the tract was noted for the trajectories of deep brain stimulation electrodes implanted in the caudal zona incerta (cZI) at the level of the maximum diameter of the red nuclei. A high degree of correspondence between the tract and the target zone of prelemniscal radiations (Raprl) was also established on tomograms in the FGATIR mode.Conclusions. The standard target points for the indirect targeting of Vim targets and the cerebello‑thalamic tract in PSA give a deviation of more than 2 mm from DRT in almost half of patients. During the use of cZI as a standard target for indirect guidance in the treatment of tremor, the DRT is located at the zone of stereotactic impact at the level of the 2nd or 3rd contact of the electrode in 76.5 % of cases. FGATIR mode allows visualizing the structure of Raprl, with stereotactic guidance on which the effect on the DRT can be achieved in 86.4 % of cases.
Reasons for failure of surgical treatment of patients with congenital basal encephaloceles
Authors: Chernikova N. A. , Satanin L. A. , Shelesko E. V. , Shugai S. V. , Kutin M.  A. , Golovin N. I. , Sakharov A. V. 
Published: April 2024

Encephalocele or craniocerebral hernia is a disease in which there is a prolapse of the meninges and structures of the brain through a skull defect. Clinically, they are manifested by a violation of nasal breathing, deformation of the naso‑ethmoid region, and nasal liquorrhea. Various inflammatory complications (meningitis, meningoencephalitis, ventriculitis, brain abscess) can occur against the background of persistent hernia, while mortality is 8–10 %.Basal encephalocele is a rare pathology that requires an integrated approach in a specialized hospital using high‑tech equipment. Therapeutic tactics and risks are determined individually based on the patient’s age, current symptoms, size of the nasal cavity, location and size of the skull base defect. In the absence of nasal liquorrhea, it is possible to delay surgical treatment in order to be able to use an autologous bone of the calvarium, to collect a larger periosteal flap, to perform the operation using a combined approach and to minimize surgical complications. With endonasal endoscopic access, it is necessary to separate the encephalocele from the surrounding tissues, completely remove the hernial sac and visualize the bone edges of the defect, and then perform its plastic closure.Despite the fact that in most cases the existing methods of treatment are very effective, in a number of cases it is not possible to achieve the desired result. This article presents two rare clinical cases in which patients with basal encephalocele required reoperation for herniation and skull base defect repair.
Analysing the results of automated knowledge testing to determine the objectivity of the tests created
Authors: Никитина Г.М. , Рыжов А.В. , Раскатова М.В. 
Published: April 2024

В рамках настоящей статьи осуществляется анализ эффективности автоматизированной проверки знаний с последующим сравнением полученных результатов с итогами традиционных методов оценки. Особое внимание уделяется исследованию связи между исходами автоматизированных тестов и традиционных экзаменов. Кроме того, статья фокусируется на разработке и апробации новой методики для анализа эффективности таких тестов, которая включает в себя элементы регрессионного анализа и применение модели множественного выбора с упорядоченными альтернативами.
This paper analyses the effectiveness of automated knowledge testing, and compares the results with the outcomes of traditional assessment methods. Particular attention is paid to investigating the relationship between the outcomes of automated tests and traditional examinations. In addition, the paper focuses on the development and validation of a new methodology for analysing the effectiveness of such tests. It includes the elements of regression analysis and the application of a multiple choice model with ordered alternatives.
Stochastic model of energy-efficient computing load management in multiprocessor systems
Authors: Шульгин А.Н. , Кошель И.Н. , Кочуров Д.А. 
Published: April 2024

Рассмотрена модель энергоэффективного управления вычислительной нагрузкой в многопроцессорных системах, учитывающая стохастический характер вычислительных процессов. В качестве основного инструментария определения параметров энергосберегающих состояний предложен метод моментов и аппроксимация к закону распределения Вейбулла. Представлена общая концепция и структура предложенной модели.
The article considers a model of energy-efficient management of computing load in multiprocessor systems, taking into account the stochastic nature of computing processes. As the main tool for determining the parameters of energy-saving states, the moment method and approximation to the Weibull distribution law are proposed. The general concept and structure of the proposed model are presented.
Evaluation of the effectiveness of fault tolerance methods in the internet of things networks
Authors: Бугаенко В.А. 
Published: April 2024

Статья представляет собой анализ эффективности методов обеспечения отказоустойчивости ИТ-инфраструктуры, а также оценку этих методов применительно к сетям промышленного интернета вещей. ИТ-инфраструктуру организации можно разделить на три укрупненных объекта: сетевое оборудование и программное обеспечение, аппаратный комплекс, программный комплекс. Для поддержания работоспособности всей системы можно выделить соответствующие группы базовых методов обеспечения отказоустойчивости, а также такие методы, которые относятся сразу к двум или трем группам: разделение сети, использование протоколов связи, отказоустойчивых серверов и балансировщиков нагрузки, резервное копирование и регулярное обновление программного обеспечения, обучение персонала, использование системы мониторинга и оповещения. Для полноценной работы без сбоев и отказов необходимо системное применение вышеперечисленных методов. Меры, исходя из экспертной оценки, обусловлены результатами предложенной матрицы. Целью данной работы является анализ и определение методов обеспечения отказоустойчивости, наиболее подходящих организациям, в которых действует технология промышленного интернета вещей. В работе применены теоретические и эмпирические методы научного исследования, в частности анализ, синтез, мысленный эксперимент, экспертная оценка. Результатом работы является предложение для системного обеспечения отказоустойчивости применительно к сетям промышленного интернета вещей.
This essay represents an analysis of the effectiveness of methods for ensuring fault tolerance of IT infrastructure, as well as an evaluation of these methods in relation to industrial Internet of Things networks. The IT infrastructure of an organization can be divided into 3 expanded objects – network equipment and software, hardware complex, software complex. To maintain the workability of the entire system, relevant groups of fault tolerance methods can be identified, as well as such methods that relate to two or three objects at once – network separation, the use of communication protocols, fault-tolerant servers and load balancers, backup and regular software updates, personnel training, as well as the use of monitoring and notification systems. For full-fledged functioning without failures and rejections, the systematic application of the above methods is necessary. The article presents a proposal for the selection of measures based on expert evaluation and the application of specific measures, the choice of which is determined by the results of the proposed matrix. The aim of this work is to analyze and determine the methods of ensuring fault tolerance that are most suitable for organizations that use the technology of the industrial Internet of Things. Theoretical and empirical methods of scientific research were applied in the study, in particular analysis, synthesis, thought experiment, expert evaluation. The result of the work is a suggestion for system fault tolerance in relation to industrial Internet of Things networks.
Comparative analysis of reactive routing algorithms in wireless decentralized self-organizing data transmission networks
Authors: Ланин М.А. 
Published: April 2024

Проведен сравнительный анализ алгоритмов маршрутизации в сетях Ad Hoc (MANET) в различных реалистичных сценариях. Показаны основные различия в работе алгоритмов реактивной маршрутизации AODV и DSR, а также преимущества и недостатки каждого из них в зависимости от среды применения.
A comparative analysis of routing algorithms in Ad Hoc (MANET) networks in various realistic scenarios is carried out. The main differences in the operation of the AODV and DSR reactive routing algorithms are shown, as well as the advantages and disadvantages of each of them depending on the application environment.
An example of applied solution to the problem of planning educational events using a calendar system planning and control
Authors: Плеханов Ю.Л. , Шафигуллин И.Ш. 
Published: April 2024

Описывается пример применения системы календарного планирования и контроля MS Project как программного средства, реализующего математический метод сетевого планирования и управления при прикладном решении задачи планирования воспитательной работы для оценивания влияния изменения первоначальных планов на время выполнения всего ее комплекса мероприятий. Ключевые слова: воспитательная работа, метод сетевого планирования и управления, система календарного планирования и контроля.
The article describes an example of applying of the scheduling and control system MS Project as a software tool that implements the mathematical method of network planning and control in the applied solution of the problem of planning educational work to assess the impact of changes in initial plans on the time of implementation of its entire set of activities.
Spatial and temporal transformations of resource‐producing subjects of the Russian Federation in 2012–2021
Authors: Petrov Yu. V. , Kochurov B. I. 
Published: April 2024

Allocation of spatial and temporal transformations in resource‐producing subjects of the Russian Federation for the decade 2012–2021 based on the comparison of tax revenue materials with budget execution data.The materials of the study were information from the Federal Tax Service of the Russian Federation, Form 1, regulatory legal acts. The values for 2 federal taxes were used as incoming tax revenues: corporate income tax and personal income tax. Research methods were: comparative, computational and cartographic.During the period under review, 13 territories were assigned at least once to the group with high raw materials specialisation, for which negative features of response to external challenges are inherent:‐ there was not a single subject of the Russian Federation in which the growth of budget expenditures with a proportional and large increase in tax revenues was observed;‐ only in 2018, was an increase in budget expenditures noted for all territories with a simultaneous increase in tax revenues from mining;‐ only in 4 subjects of the Russian Federation budget did expenditures continuously increased, while some members of the group had budget expenditures reduced against the background of the growth of raw material tax revenues.During the period under review, high economic uncertainty and the accompanying transformation in regional policy were revealed, resulting in a change in the number and composition of participants in resourceproducing subjects of the Russian Federation.
The “Lifelong Learning” concept as a factor of competitiveness and sustainable social and economic development
Authors: Tsoy M. Ye. , Shchekoldin V. Yu. , Yakovenko N. V. 
Published: April 2024

The purpose is to identify homogeneous groups of consumers towards the purchase of Lifelong Learning services in the context of their purchasing behaviour.The theory of system analysis, economic‐statistical and empirical methods were used. The respondents were consumers of services provided in the centres of additional education of the largest Russian universities. The data for the study was collected by means of an online survey via Google Forms service.Six groups of educational services consumers were identified: 1st – “LLL” consumers who identify their learning experience as ineffective (corresponding to the response “get nothing out of learning”); 2nd – men and women not more than 35 years old, targeting mainly not in the family, but in building a career, quite often participating in various educational activities; 3rd – women who choose the format of training in the form of retraining programs; 4th – women working as freelancers or self‐employed, some of them on maternity leave; 5th – women up to about 35 years old, working as line workers, without children and without higher education; 6th – men under the age of 40, with a good financial situation, who independently choose a certain training programme in order to obtain specific knowledge.The concept of “Lifelong Learning” involves the continuous development and improvement of skills, competences and knowledge throughout life, which helps to enhance competitiveness and sustainability of social and economic development.
Transformation of the relief of the southern Astrakhan region (Russia) after the expansion of agricultural land at the beginning of the last century
Authors: Nikiforova Z. V. , Kosobokova S. R. , Marmilov A. N. , Shabanov D. I. , Medvedeva E. A. , Rabazanov N. I. , Sokolskaya E. A. 
Published: April 2024

To establish the causes and consequences of changes in the relief of the southern Astrakhan region in the period 1900–1970.Comparison of cartographic materials of past years with data in recent satellite remote sensing images. The materials were superimposed on a geoformation program: then the hydrological elements of the relief and the Baer hills were outlined and measured for the purpose of quantitative and qualitative analysis of changes in the territory (before and after reclamation works and the currently existing relief).The analysis of the materials revealed a significant transformation of the relief, which has served as an impetus for the development of a semidesert zone in this area.The work carried out revealed the anthropogenic impact on the relief through which most of the territory was subject to drainage as a result of reclamation works to increase in arable land.
Peri-implantitis treatment modalities:A Narrative review
Authors: Razmara Farnoosh , Tayari Navid , Mohammadi Saba 
Published: April 2024

Background: Implant Dentistry was created to show reliable treatment approaches for restoring the oral cavity’s esthetic and function. However, while dental implants have a high long-term success rate, dental implants are exposed to mechanical or biological complications. The therapeutic approaches will be addressed in this review.
Materials and methods: Different data sources were used to conduct the literature search from 2010 to 2022 for treatment methods of peri-implantitis.
Results: In the study of the effect of laser, 16 items were selected for inclusion in this review. In the next step of study, we compared pre-implantitis treatment methods based on surgical and non-surgical methods without considering the drug method and finally 12 articles were included. In the final part of the study, we evaluated the effect of drug treatment on pre-implantation and 10 articles were included.
Conclusion: Peri-implantitis appears to be a multifactorial disease including the patient’s host/microbe response, implant characteristics, soft tissue and the hard conditions surrounding the implant, and the dentist’s surgical and prosthetic part experience. Different treatment modalities are present today, all are used to treat peri-implantitis, such as surgery, and laser therapy. Even though the different treatment modalities cannot be comparable, however, the outcome of surgical treatment of peri-implantitis is good. In peri-implant mucositis, non-surgical treatment seems to be sufficient. However, for the treatment of peri-implantitis, a surgical approach, which includes open-flap debridement, apically positioned flap and guided bone regeneration, is considered more appropriate.
Evaluation of the effect of COMT gene polymorphism in rs4680 on the occurrence of concomitant head, neck and back pain in patients with temporomandibular joint disorders
Authors: Najafi Shamsoulmolouk , Roudgari Hasan , Sheykhbahaei Nafise , Oloumi Amir Mohammad 
Published: April 2024

Background: Temporomandibular disorders (TMD) include a number of clinical conditions involving the masticatory muscles, temporomandibular joint (TMJ), and adjacent structures. The main feature of TMD is pain. According to past studies, TMD can have genetic causes. One of the genes that seems to be important in this regard is COMT. This study aims to compare the effect of COMT gene polymorphism rs4680 on the occurrence of simultaneous head, neck and back pain in patients with TMD.
Methods: This study was conducted as a case-control study on patients aged between 18 and 65 with TMD disorder. After meeting the conditions for entering the study, a written informed consent was obtained from the people participating in this project. Then a blood sample of 5cc was prepared from each person and poured into tubes containing EDTA anticoagulant and used for DNA extraction and identification. The COMT gene was sent to the genetics laboratory and was compared in terms of the polymorphism of the COMT gene using the PCRARMS technique.
Results: The sample size was 100 people aged 18 to 65 years. Variables with normal distribution were analyzed with Chi-Square test and variables with non-normal distribution with Mann-Whitney test. After genetic analysis in terms of rs4680 gene polymorphism, 18 people (18%) were identified with AA, 80 people (80%) with GA and 2 people (2%) with GG. "temporal headache in the last 30 days", "temporal headache change with chewing hard foods", "temporal headache change with opening the mouth or moving the jaw forward or to the sides", " Temporal headache changes with jaw habits such as teeth touching, pressing or grinding teeth together, chewing gum ", " Temporal headache changes with jaw activities such as talking, kissing or yawning ", " having Back pain during the last 4 weeks", having pain in the arm, leg, joints (neck) during the last 4 weeks", “headache during 4 last weeks” and "time of onset of headache in the temporal region" did not have significant relationships with COMT gene polymorphism rs4680 in patients with TMD.(repectively, p value=0.873، p value=0.658، p value=0.518 p value=0.685، p value=0.884،p value=0.654، p value=0.723، p value=0.831، p value=0.692 ).
Conclusion: According to previous studies, there is a significant relationship between rs4680 polymorphism in the COMT gene and the occurrence of temporomandibular disorders (TMD), although in our study, no significant relationship was found between headache and neck and back pain with this polymorphism.
Evaluation of the subclavicular route for the pectoralis major flap in oral and maxillofacial reconstruction- Our 15 years experience
Authors: Garajei Ata , ArabKheradmand Ali , Emami Azadeh 
Published: April 2024

Purpose: The pectoralis major flap (PMF) is an important reconstructive tool for defects in the head and neck region but excessive bulk and a limited arc of rotation can be problematic. These problems can be addressed by passing the pedicle deep to the clavicle but some authors feel that this modification may compromise the vitality off the flap. In the current article, these problems have been addressed by using a modified method.
Patients and methods: During the past 15 years (2000 to 2014) 182 head and neck cancer patients were treated for primary reconstruction following tumor ablation. PMF was modified by passing the pedicle deeply to the clavicle. Following flap harvest, the pedicle was passed in the subclavicular plane for reconstruction.
Results: It was possible to increase the average length of PMF to 2.5-3.5 cm compared to the supraclavicular route by using this modification. Minor complications were observed in 9 of 182 cases (5%): Partial flap necrosis occurred in 6 cases and fistula formation was observed in 3 cases.
Conclusions: The subclavicular route increases the length and arc of rotation without compromising vascular supply to a higher degree compared to the conventional supraclavicular route. Furthermore, this concept decreases the bulk of the flap pedicle which is functionally and cosmetically favourable.