bluuebunny/crossref_metadata_2025_split huggingface dataset:
Risk and Protective Factors of Lifetime Cocaine-Associated Chest Pain
Authors: Clergue-Duval Virgile , Nicolas-Sacy Louise , Karsinti Emily , Zerdazi El-Hadi , Laplanche Jean-Louis , Brousse Georges , Marees Andries T. , Derks Eske M. , Henry Patrick , Bellivier Frank , Vorspan Florence , Bloch Vanessa 
Published: July 2021

Introduction: Cocaine users often present with repetitive events of cocaine-associated chest pain (CACP), clinically resembling acute coronary syndromes. The aim of the study is to describe the specific risk factors for CACP.Method: Cocaine users (n = 316) were recruited for a multicenter cross-sectional study. Lifetime CACP history, sociodemographic factors, and lifetime use of cocaine and other substances were assessed. Thirty single nucleotide polymorphisms (SNPs) of NOS3, ROCK2, EDN1, GUCY1A3, and ALDH2 genes, suggested by the literature on coronary spasms, were selected. The associations with CACP history were tested using the chi-square test, Student's t-test and logistic regression.Results: Among the 316 subjects [78.5% men, mean age 37.5 years, (standard-deviation ±8.7)], 190 (60.1%) were daily cocaine users and 103 (32.6%) reported a lifetime CACP history. Among those with a lifetime CACP history, the median was 10 events per individual. In multivariate analysis, lifetime CACP history was associated with daily cocaine use [odds-ratio (OR) 3.24; 95% confidence intervals (1.29–9.33)], rapid route of cocaine use [OR 2.33 (1.20–4.64) vs. intranasal use], and lifetime amphetamine use [daily amphetamine use: OR 2.80 (1.25–6.32) and non-daily amphetamine use: OR 2.14 (1.15–4.04) vs. never used]. Patients with lifetime opioid maintenance treatment (OMT) reported significantly less lifetime CACP history [OR 0.35 (0.16–0.76)]. None of the selected SNPs was associated with CACP history after multiple testing corrections.Conclusions: Clinical variables describing the intensity of stimulant use were positively associated with lifetime CACP history, while OMT was negatively associated with it. Specific harm reduction strategies can target these risk factors.
Contraceptive Method Mix and HIV Risk Behaviors Among Kenyan Adolescent Girls and Young Women Seeking Family Planning Services: Implications for Integrating HIV Prevention
Authors: Nyaboe Edward , Larsen Anna , Sila Joseph , Kinuthia John , Owiti George , Abuna Felix , Kohler Pamela , John-Stewart Grace , Pintye Jillian 
Published: July 2021

Background: Understanding HIV risk behaviors among adolescent girls and young women (AGYW) seeking contraception could help inform integrating HIV prevention services within family planning (FP) clinics.Methods: From 10/2018 to 04/2019, we conducted a survey at 4 FP clinics in Kisumu, Kenya to evaluate risk behaviors among AGYW without HIV infection seeking contraception. All AGYW aged 15–24 were invited to participate following receipt of FP services. Adolescent girls and young women initiating or refilling contraception were included in this analysis. Long-acting reversible contraceptives (LARC) included intrauterine devices, implants, or injectables. Non-LARC methods included oral contraceptive pills (OCP) or condoms. We used an empiric risk score to assess HIV risk behaviors; HIV risk scores of ≥5 (corresponding to 5–15% HIV incidence) defined “high” HIV risk.Results: Overall, 555 AGYW seeking FP were included. Median age was 22 years [interquartile range (IQR) 20–23], median completed education was 12 years (IQR 10–12); 23% of AGYW had HIV risk scores of ≥5. The most frequent form of contraception was injectables (43%), followed by implants (39%). After adjustment for education, prior pregnancy, and marital status, LARC users more frequently engaged in transactional sex than non-LARC users [6 vs. 0%, adjusted prevalence ratio (PR) = 1.17, 95% CI 1.09–1.29, p &lt; 0.001]; LARC use was not associated with HIV risk scores ≥5. Among LARC users, AGYW using injectables more frequently had condomless sex compared to AGYW using other LARC methods (85 vs. 75%, adjusted PR = 1.52, 95% CI 1.09–2.10, p = 0.012); injectable use was not associated with HIV risk scores ≥5.Conclusions: Adolescent girls and young women seeking contraception frequently had high HIV risk, emphasizing the importance of integrating HIV prevention within FP. Multipurpose technologies for contraception and HIV prevention could particularly benefit AGYW.
Affective and Physiological Responses During Acute Pain in Virtual Reality: The Effect of First-Person Versus Third-Person Perspective
Authors: Turbyne Collin , de Koning Pelle , Smit Dirk , Denys Damiaan 
Published: July 2021

Background: Virtual reality (VR) has been previously shown as a means to mitigate acute pain. The critical parameters involved in the clinical efficacy of mitigating acute pain from different perspectives remains unknown. This study attempted to further deconstruct the critical parameters involved in mitigating acute pain by investigating whether affective and physiological responses to painful stimuli differed between a first and a third person perspective in virtual reality.Methods: Two conditions were compared in a repeated-measures within subject study design for 17 healthy participants: First person perspective (i.e., where participants experienced their bodies from an anatomical and egocentric perspective) and third person perspective (i.e., where participants experienced their bodies from an anatomical perspective from across the room). The participants received noxious electrical stimulation at pseudorandom intervals and anatomical locations during both conditions. Physiological stress responses were measured by means of electrocardiography (ECG) and impedance cardiography (ICG). Subjective scores measuring tension, pain, anger, and fear were reported after every block sequence.Results: There were no significant differences in physiological stress responses between conditions. However, the participants reported significantly higher tension during the third person condition.Conclusion: Relative to a third person perspective, there are no distinct physiological benefits to inducing a first person perspective to mitigate physiological stress responses to acute pain in healthy individuals. However, there may be additional clinical benefits for doing so in specific clinical populations that have shown to benefit from relaxation techniques. Further research is needed in order to refine the clinical utility of different perspectives during virtual reality immersions that serve to act as a non-pharmacological analgesic during acute pain.
Morphometric and Nanomechanical Features of Platelets from Women with Early Pregnancy Loss Provide New Evidence of the Impact of Inherited Thrombophilia
Authors: Andreeva Tonya , Komsa-Penkova Regina , Langari Ariana , Krumova Sashka , Golemanov Georgi , Georgieva Galya B. , Taneva Stefka G. , Giosheva Ina , Mihaylova Nikolina , Tchorbanov Andrey , Todinova Svetla 
Published: July 2021

Pregnancy is associated with hypercoagulation states and increased thrombotic risk, especially in women with thrombophilia. We combine atomic force microscopy (AFM) and flow cytometry to examine the morphology and nanomechanics of platelets derived from women with early pregnancy loss (EPL) and control pregnant (CP) and non-pregnant (CNP) women. Both control groups exhibit similar morphometric parameters (height and surface roughness) and membrane stiffness of platelets. EPL patients’ platelets, on the other hand, are more activated than the control groups, with prominent cytoskeletal rearrangement. In particular, reduced membrane roughness (22.9 ± 6 nm vs. 39.1 ± 8 nm) (p < 0.05) and height (692 ± 128 nm vs. 1090 ± 131 nm) (p < 0.05), strong alteration in the membrane Young modulus, increased production of platelets’ microparticles, and higher expression of procoagulant surface markers, as well as increased occurrence of thrombophilia (FVL, FII20210A, PLA1/A2, MTHFR C677T or 4G/5G PAI-1) polymorphisms were found. We suggest that the carriage of thrombophilic mutations triggers structural and nanomechanical abnormalities in platelets, resulting in their increased activation. The activation state of platelets can be well characterized by AFM, and the morphometric and nanomechanical characteristics might serve as a new criterion for evaluation of the cause of miscarriage and offer the prospect of an innovative approach serving for diagnostic purposes.
BASIC PROVISIONS OF THE STANDARD METHODOLOGY FOR CALCULATING AND PLANNING THE CAPACITY OF 5G TRANSPORT NETWORKS BASED ON SDN/NFV TECHNOLOGIES
Authors: ЦЫМ А.Ю. , ЯРЛЫКОВА С.М. , БЫЧКОВА О.А. 
Published: July 2021

Рассмотрены особенности транспортной сети мобильной связи, сооружаемой на основе технологии 5G. Приведена методика расчета структурного состава пользователей и оценки суммарного агрегированного трафика. Рекомендована форма итоговой таблицы с расчетными значениями пропускной способности на участках транспортной сети 5G. Предложено использовать методику для обеспечения массового внедрения инновационных технологий на сети связи общего пользования Российской Федерации путем стандартизации процессов проектирования, строительства и эксплуатации транспортных сетей 5G.
The features of the transport network of mobile communications built based on 5G technology are considered. The methodology for calculating the structural composition of users and assessing the total aggregated traffic is presented. The form of the final table with the calculated values of the bandwidth in the sections of the 5G transport network is recommended. It is proposed to use the methodology to ensure the massive introduction of innovative technologies on the public communication networks of the Russian Federation by standardizing the design, construction, and operation of 5G transport networks.
COMPUTER SIMULATION OF THE ELECTROMAGNETIC FIELD ON URBAN RADIO ROUTES WITH A MOBILE COMMUNICATION POINT
Authors: ГАВРИЛОВ В.М. , КОРНЕЕВА Н.Н. 
Published: July 2021

Приведены результаты выполненного с помощью программы FEKO [1-3] электродинамического расчета распределения поля в зоне городской застройки, представленной трехмерной компьютерной моделью. Проведена оценка интенсивности электромагнитного поля в радиоканале с подвижным пунктом связи на затененных и закрытых трассах.
The results of the electrodynamic calculation of the field distribution in the urban area, represented by a threedimensional computer model, performed using the software FEKO, are presented. The intensity of the electromagnetic field in a radio channel with a mobile communication point on shaded and closed routes is estimated.
NBIC-TECHNOLOGIES FOR A DIGITAL ECONOMY
Authors: МАСЛОВ О.Н. 
Published: July 2021

Дается обоснование необходимости ускоренного внедрения NBIC-технологий (нанотехнологии, информацион -ные, биологические и когнитивные технологии) в отечественное производство на стадии его перехода к цифровой экономике. Рассматривается проблема формирования системы генерации и реализации инновационных знаний; показана ключевая роль информационных технологий (реинжиниринг бизнес-процессов, имитационное моделирование, системы поддержки реше -ний и др.). Отмечена важность подготовки кадров новой формации, способных использовать достижения NBIC-технологий в интересах современного производства.
The paper discusses the need for accelerated implementation of NBIC-technologies (according to the first letters of their names: nanotechnology, biological, information, and cognitive technologies) in domestic production at the stage of its transition to the digital economy. The problem of forming a system for generating and implementing innovative knowledge is considered. The key role of information technologies (business processes reengineering, simulation modeling, decision support systems, etc.) in its solution is shown. The importance of training personnel of a new formation, capable of using the achievements of NBIC-technologies in the interests of modern production, is noted.
JUSTIFICATION OF THE SELECTION OF TOPOLOGICAL STRUCTURE OF PUBLIC FIBER OPTICAL COMMUNICATION NETWORK
Authors: ЯСИНСКИЙ С.А. , ЗЮЗИН А.Н. 
Published: July 2021

Приводится обоснование выбора равнозначности относительных коэффициентов эффективности радиальных и кольцевых типовых структур и их сравнительный анализ для формирования структуры волоконно-оптической сети связи. Разработана математическая модель для обоснования выбора радиально-кольцевых типовых структур по среднегармоническим относительным коэффициентам эффективности радиальных и кольцевых структурных составляющих в ходе системного проектирования волоконно-оптической сети связи.
The article provides a rationale for choosing the equivalence of the relative efficiency coefficients of radial and ring typical topological structures and their comparative analysis for the formation of the structure of a fiber-optic communication network. A mathematical model is developed to justify the choice of radial-ring typical topological structures based on the average harmonic relative efficiency coefficients of radial and ring structural components in the course of a system design of a fiber-optic communication network.
RESULTS OF THE DRM SIMULCAST FIELD TRIALS IN 87.5-108 MHZ BAND
Authors: СОКОЛОВ С.А. , МЫШЬЯНОВ С.В. , КОВАЛГИН Ю.А. 
Published: July 2021

Показано современное состояние цифрового радиовещания в России и в мире. Описаны результаты исследований, проведенных в опытной зоне аналого-цифрового DRM/ЧМ-радиовещания в полосе частот 87,5-108 МГц в Санкт-Петербурге в период с 18 июля 2019 г. по 25 декабря 2020 г. при мощностях аналоговой и цифровой частей передатчика, равных 3000 и 800 Вт соответственно. Приведены результаты оценки электромагнитной совместимости обоих форматов радиовещания. Сформулированы требования, предъявляемые отечественными радиовещателями к системе цифрового радиовещания в диапазоне 87,5-108 МГц, и показано, что аналого-цифровой формат DRM Simulcast соответствует им.
The current state of digital radio broadcasting both in Russia and in the world is presented. Digiton Systems LLC carried out a high-power field trial of the DRM system in DRM Simulcast mode by order of the Russian Television and Radio Broadcasting Network (RTRN) in the FM band 87.5-108 MHz in St. Petersburg (Russian Federation) from July 2019 to December 2020. The transmitter was set to radiate at 95.9 MHz FM signal with a transmit power of 3 kW and DRM signal with a transmit power of 800 W simultaneously. The article presents the results of these studies. The results of evaluating the electromagnetic compatibility of FM and DRM broadcasting formats are also described.
FROM CRYPTOGRAPHIC PRIMITIVE TO PROFESSIONAL COMPETENCE
Authors: МИТРОФАНОВ М.В. , ВАСЮКОВ Д.Ю. , АНИСИМОВ В.В. , КУЗНЕЦОВ С.И. 
Published: July 2021

Рассматривается реализованный в учебной практике подход к методике обучения специалистов по защите информации в локально-вычислительных сетях, позволяющий в условиях ограниченного ресурса учебного времени, выделяемого в рамках курса повышения квалификации специалистов, сформировать необходимую профессиональную компетенцию.
The article considers the approach to the methodology of training specialists in information security in local area networks, implemented in educational practice, which allows, in the conditions of a limited educational time allocated within the framework of the advanced training course for specialists, to form the necessary professional competence.
FUTURE NETWORKS AND THEIR STANDARDIZATION
Authors: НЕТЕС В.А. 
Published: July 2021

Рассматривается деятельность по разработке концепции будущих сетей (БС) МСЭ, а также Объединенного технического комитета № 1 по информационным технологиям, образованного ИСО и МЭК. Представлены разрабатываемые МСЭ новые направления: обеспечение доверия в инфокоммуникациях и информационно-ориентированные сети. Показана разница между подходами МСЭ и ИСО/МЭК к созданию БС; приведены причины, по которым можно говорить о большей реалистичности подхода МСЭ. Анализируется национальный российский стандарт, посвященный БС.
The activity of the ITU and the Joint Technical Committee 1 on information technology, formed by ISO and IEC, on the development of the concept of future networks is considered. The new areas developed by ITU have been characterized: trust provisioning in info-communication technologies and information-centric (data-aware) networking. Explanations are offered for the difference between the ITU and ISO/IEC approaches. The reasons why we can talk about the more realistic approach of the ITU are given. The Russian national standard of future networks is also analyzed.
SIMULATION MEASUREMENT OF CONDUCTIVE INTERFERENCE
Authors: САЖНЕВ А.М. , РОГУЛИНА Л.Г. 
Published: July 2021

Разработана модель имитационных испытаний электронного устройства в современной программной среде на основе отечественных компонентов. Проведены имитационные испытания конвертора напряжения на 24 В с выходным током 1,4 А, частотой коммутации 20 кГц и выпрямительного устройства с выходным напряжением 48 В, током нагрузки 28 А. Получены частотные зависимости уровней кондуктивных помех и выполнена их оценка на соответствие нормам.
A model of simulation tests of an electronic device in a modern software environment based on domestic components has been developed. Simulation tests of a 24 V voltage converter with an output current of 1.4 A, a switching frequency of 20 kHz, and a rectifier device with an output voltage of 48 V, a load current of 28 A were carried out. The frequency dependences of conductive interference levels were obtained and their compliance with the standards was evaluated.
A COMPREHENSIVE AUTOMATED SOLUTION TO THE PROBLEM OF AIR ENVIRONMENT MONITORING
Authors: ОСАНОВ В.А. , КОНДРАТЬЕВ С.М. , КОНЯЕВА О.С. 
Published: July 2021

Рассмотрена автоматизированная система мониторинга воздушной среды с использованием технологий беспилотных летательных аппаратов, оснащенных датчиками для выявления вредных веществ. Представлены алгоритм функционирования системы и программно-аппаратная часть решения. Показано, что канал связи на основе методов шифрования обеспечивает безопасную передачу данных с беспилотного аппарата на сервер. Результаты исследования найдут практическое применение в мониторинге уровня загрязнения воздуха в городах.
An automated system for monitoring the air environment using technologies of unmanned aerial vehicles equipped with sensors for detecting harmful substances is considered. The algorithm of the system functioning and the software and hardware part of the solution are presented. It is shown that a communication channel based on encryption methods ensures secure data transfer from an unmanned vehicle to a server. The results of the study will find practical application in monitoring the level of air pollution in cities and in predicting the direction of movement of polluting air masses.
SYSTEM OF INDEXES AND INDICATORS OF THE LIFE CYCLE STAGES OF THE DEVELOPMENT OF GENERATIONS OF MOBILE COMMUNICATION NETWORKS
Authors: ДЕВЯТКИН Е.Е. , ИВАНКОВИЧ М.В. , ШВЕЦ С.В. , СУХОДОЛЬСКАЯ Т.А. 
Published: July 2021

Представлен подход к формированию порядка определения и применения показателей и индикаторов стадий жизненного цикла поколений сетей подвижной связи (СПС) в их эволюционном развитии. Подтверждена необходимость использования этих инструментов в решении прикладных вопросов регуляторного, нормативно-правового и других видов обеспечения для упреждающей разработки мероприятий, обуславливающих возможность внедрения СПС с учетом сложившихся национальных регуляторных процедур. Показана взаимообусловленная связь и приведено соотношение поколений СПС с поколениями социотехнических систем.
An approach to the formation of the procedure for determining and applying indexes and indicators of the stages of the life cycle of generations of cellular mobile communication networks in their evolutionary development is presented. It is shown that it is necessary to use these indexes and indicators in solving applied issues of regulatory and other types of support to enable the proactive development of measures that determine the possibility of implementing the mobile networks, taking into account the existing national regulatory procedures. A mutually dependent relationship is presented, and the ratio of generations of mobile communication networks with generations of socio-technical systems is given.
THE MAIN DIRECTIONS OF THE CONCEPT OF COMMUNICATIONS IN A LOW-ORBIT RELAY SATELLITES COMMUNICATION SYSTEM
Authors: ПАНТЕЛЕЙМОНОВ И.Н. , МОНАСТЫРЕНКО А.А. , БЕЛОЗЕРЦЕВ А.В. , БОЦВА В.В. , ЩЕРБАТЫХ Л.В. , ФИЛАТОВ В.В. 
Published: July 2021

Рассмотрены проблемы организации связи в системе персональной подвижной спутниковой связи (СППСС) на низкоорбитальных спутниках-ретрансляторах для обеспечения широкополосного доступа к сетям передачи данных с применением небольшого персонального абонентского терминала (АТ). Дан краткий анализ существующих СППСС, определены требования к системе связи,представлены основные направления организации информационного обмена,предложенорешение создания АТ.
The paper is devoted to the problems of communication organization in the low-orbit personal mobile satellite communication system for providing broadband access to data transmission networks using a small personal subscriber terminal. A brief analysis of the existing systems of personal mobile satellite communications is given, the requirements for the communication system are defined, the main directions of information exchange organization are considered, and a solution for creating a subscriber terminal is proposed.
LOW ORBIT SATELLITE COMMUNICATION SYSTEMS STARLINK AND ONEWEB
Authors: МЫРОВА Л.О. , МЕНТУС О.В. , ДАВЫДОВ А.Б. , ЗАМЯТИН П.А. , ЛЯДОВА Е.Ф. , ФИЛАТОВА А.С. 
Published: July 2021

Рассмотрены особенности построения спутниковых систем связи Starlink и OneWeb,использующих космические аппараты на низких круговых орбитах. Системы обладают высокой готовностью к предоставлению глобальных услуг связи и имеют весьма серьезный потенциал развития. В том числе следует отметить высокую вероятность применения систем Starlink и OneWeb в интересах военных и спецслужб недружественных России стран, что представляет собой очевидную угрозу национальной безопасности РФ.
The features of the construction of Starlink and OneWeb satellite communication systems using spacecraft in low circular orbits are considered. These systems are ready to provide global communication services and have very serious development potential. In particular, it should be noted that there is a high probability of using Starlink and OneWeb systems in the interests of the military and special services of countries unfriendly to Russia, which is an obvious threat to the national security of the Russian Federation.
SISTEMA DE ILUMINAÇÃO A LED ALIMENTADO POR PAINÉIS FOTOVOLTAICOS EM ÁREAS VULNERÁVEIS.
Authors: Almeida Lavinia , Trindade Lucas , Bittencourt Tiago 
Published: July 2021

Este estudo analisa os benefícios que podem ser obtidos através de uma iluminação em diversos lugares e sendo assim, conseguindo verificar redução na atividade criminosa. Entre os benefícios verificados, temos a melhoria na saúde e ao acesso informação. A criminalidade, trata-se de um dos temas primordiais dos brasileiros e, embora existam esforços para reduzi-lo, eles continuam altos. Com isso, a deia central consiste em que a ampliação do acesso de iluminação pode oferecer uma forma de redução na criminalidade e pode ser vinculada a outras formas já existentes de combater o crime.
A utilização eficiente da energia elétrica é um tema que vem crescendo muito. No Brasil isso se deve principalmente à falta de chuvas que impacta diretamente as usinas hidrelétricas que são a maior fonte de eletricidade no país. Este trabalho estuda maneiras de reduzir o consumo de energia elétrica dos sistemas de iluminação através da utilização de equipamentos mais modernos e eficientes. Nos últimos anos os diodos emissores de luz (LED’s) vem revolucionando o setor de iluminação possibilitando a redução do consumo de energia com ótimos níveis de iluminação.