bluuebunny/crossref_metadata_2025 huggingface dataset:
Mathematical and Computational Modeling of Suicide as a Complex Dynamical System
Authors: Wang Shirley B , Robinaugh Donald , Millner Alexander , Fortgang Rebecca , Nock Matthew
Published: September 2023

Background: Despite decades of research, the current suicide rate is nearly identical to what it was 100 years ago. This slow progress is due, at least in part, to a lack of formal theories of suicide. Existing suicide theories are instantiated verbally, omitting details required for precise explanation and prediction, rendering them difficult to effectively evaluate and difficult to improve. By contrast, formal theories are instantiated mathematically and computationally, allowing researchers to precisely deduce theory predictions, rigorously evaluate what the theory can and cannot explain, and thereby, inform how the theory can be improved. This paper takes the first step toward addressing the need for formal theories in suicide research by formalizing an initial, general theory of suicide and evaluating its ability to explain suicide-related phenomena.Methods: First, we formalized a General Escape Theory of Suicide as a system of stochastic and ordinary differential equations. Second, we used these equations to simulate behavior of the system over time. Third, we evaluated if the formal theory produced robust suicide-related phenomena including rapid onset and brief duration of suicidal thoughts, and zero-inflation of suicidal thinking in time series data.Results: Simulations successfully produced the proposed suicidal phenomena (i.e., rapid onset, short duration, and high zero-inflation of suicidal thoughts in time series data). Notably, these simulations also produced theorized phenomena following from the General Escape Theory of Suicide: that suicidal thoughts emerge when alternative escape behaviors failed to effectively regulate aversive internal states, and that effective use of long-term strategies may prevent the emergence of suicidal thoughts. Conclusions: To our knowledge, the model developed here is the first formal theory of suicide, which was able to produce – and, thus, explain – well-established phenomena documented in the suicide literature. We discuss the next steps in a research program dedicated to studying suicide as a complex dynamical system, and describe how the integration of formal theories and empirical research may advance our understanding, prediction, and prevention of suicide.
Does time pressure promote lies in betting on coin tosses?
Authors: Liu Huanxu , Yamada Yuki
Published: September 2023

Previous research suggests that individuals automatically lie rather than being honest and that lies increase under time pressure. However, subsequent studies have failed to replicate the original findings. Moreover, because the participants could decide their responses before the onset of time pressure, it was difficult to conclude that the difference between the conditions observed in the original study was due to time pressure. Therefore, we improved the methodology in this study by applying time pressure throughout the task to ensure that the participants were consistently influenced by time pressure, regardless of when they made their decisions to lie. The results (N = 428) revealed a significant increase in lies under time pressure. A connection between the frequency of lies and participants’ perceived time pressure was also shown. These findings support the original study, which indicated that cognitive control is needed to resist the temptation to lie and suggested that the frequency of lies increases, especially when the perceived time pressure is stronger because it exhausts the resources available to suppress lies.
PERAN PEREMPUAN PESISIR SELATAN SEJARAH SOSIAL EKONOMI DI DESA PUGER WETAN KABUPATEN JEMBER TAHUN 1997-1999
Authors: Sa’diyah Khusniatus , Il Badri Mohamad , Rochmawati Rina
Published: September 2023

Masyarakat pesisir di Desa Puger Wetan Kecamatan Puger Kabupaten Jember, merupakan salah satu golongan sosial ekonomi yang kelangsungan hidupnya ditopang dari kemampuannya mengelola sumber daya perikanan. Minimnya sorotan bagaimana peran perempuan pesisir di Desa Puger Wetan pada saat peristiwa krisis moneter menjadikan peneliti melakukan penelitian ini. Metode penelitian yang digunakan adalah metode penelitian sejarah, yang memiliki 4 tahapan yaitu: Heuristik (pengumpulan data) , Kritik (uji validasi), Intepretasi (penafsiran), dan Historiografi (penulisan sejarah). Hasil penelitian dapat diambil kesimpulan bahwa kaum perempuan pesisir Desa Puger Wetan memiliki kedudukan dan peran ganda, yaitu tanggung jawab disektor domestik (berkaitan dengan posisi perempuan sebagai seorang istri dan ibu) dan disektor publik (dituntut mencari nafkah untuk menghidupi keluarganya). Sedangkan krisis yang terjadi pada tahun 1997 tidaklah berdampak terlalu besar bagi masyarakat pesisir dikarenakan mengalami kenaikan produksi perikanan 5%, hal ini yang menyelamatkan masyarakat pesisir Desa Puger Wetan dari peristiwa krisis moneter pada tahun 1997-1999.
PENGARUH KONDISI SOSIAL EKONOMI ORANG TUA DAN KEMANDIRIAN SISWA TERHADAP HASIL BELAJAR
Authors: Neviyani Neviyani , Gerhani Febrina , Wafi Moch. Ali
Published: September 2023

Penelitian ini dilatarbelakangi iioleh iikepedulian iipeneliti iiterhadap dunia pendidikan khususnya di MA Madinatul iiUlum iiCangkring iiJenggawah iiJember menunjukkan bahwa siswa masih kurang produktif iidalam iihasil iibelajar iisiswa. iibelajar siswa. (2) Untuk mengetahui apakah ada pengaruh iiyang iisignifikan iikemandirian   terhadap   hasil   belajar siswa. (3) Untuk mengetahui ada iitidaknya iipengaruh iisimultan kondisi sosial ekonomi masyarakat dan kemandirian siswa iterhadap iihasil belajar siswa.   Penelitian   ini menggunakan pendekatan kuantitatif dan menggunakan jenis penelitian   sensus.   Populasi dalam penelitian ini adalah siswa kelas XI dan   XII   MA   Madinatul   Ulum.   Dalam penelitian   ini   pengumpulan   data    menggunakan   observasi   dan   angket.   Teknik   analisis data yang digunakan adalah Regresi   Linier   Berganda   RLB   (Multivariate   Linear Regression). Hasil   penelitian   ini.   (1)   Terdapat   pengaruh   kondisi   sosial   ekonomi   orang tua terhadap hasil belajar siswa, diperoleh hasil   nilai   signifikansi   0,04   <   0,05   dan   t hitung > t   tabel   (2,954   >   2,032).   Yang   artinya   terdapat   pengaruh   kondisi   sosial ekonomi     orang     tua     X1     terhadap     hasil     belajar     siswa     Y.     (2)     Terdapat pengaruh kemandirian   siswa   terhadap   hasil   belajar   siswa,   diperoleh    hasil    nilai signifikansi 0,03 < 0,05 dan t hitung > t   tabel   (2,642>   2,032)   .   (3)   Artinya   ada pengaruh kemandirian   X2   terhadap   hasil   belajar   siswa   Y.   Ada   pengaruh   simultan kondisi sosial ekonomi orang tua X1 dan kemandirian X2 terhadap hasil belajar siswa.Hasil  tersebut        diperoleh         dari      nilai     f          hitung  sebesar 6,539   >          3,32,    dan nilai signifikansi 0,04 < 0,05.
STUDI KASUS LATAR BELAKANG GURU MATA PELAJARAN SEJARAH TERHADAP PEMAHAMAN SISWA MADRASAH ALIYAH DI KABUPATEN LUMAJANG
Authors: Amin Muhamad Fuad , Ibrahim M. Iqbal , Firzaq Ilfiana
Published: September 2023

Penelitian ini bertujuan  untuk mengetahui latar belakang guru mata pelajaran sejarah  oleh guru  sejarah yang tidak sesuai dengan bidang nya. Pendekatan ini menggunakan rancangan studi kasus, teknik yang digunakan dalam pengumpulan data adalah wawancara, observasi, dan dokumentasi.  Subjek yang di pilih diantara nya guru  linier, guru non-linier , dan siswa. Metode yang di gunakan untuk menganalisis data adalah reduksi data, penyajian data, dan penarikan kesimpulan. Untuk menguji keabsahan data menggunakan triangulasi data. Hasil penelitian pada ketiga subjek dapat diketahui; (1) Latar belakang guru mata pelajaran sejarah, (2) Kesiapan guru  mata pelajaran sejarah, (3) Pengaruh Linieritas terhadap pemahaman siswa . dari ketiga subjek . Guru   yang sesuai dengan bidang yang diampunya lebih  cenderung siswa memahami dalam menyampaikan materi. Sedangkan guru yang tidak sesuai dengan bidang yang di ampunya  siswa kesulitan dalam memahami materi pelajaran sejarah.
How I Dissolve Anxiety and Depression using Text Messages
Authors: Coney Keith
Published: September 2023

To get something you never had……you have to do something you never did. I found that nothing in life is worthwhile unless you take RISKS……NOTHING. Ease…..is a greater threat to progress than hardship. Thomas Edison conducted 1000 experiments. Because the 1000 and first – was the light bulb. Every failed experiment is one step closer to success So do what you feel passionate about. Take chances.
Recurrent Ischemic Strokes in the Territory of Recurrent Artery of Heubner Presenting in Relation to Facial Swelling and Weakness
Authors: Chaudhari Amit
Published: September 2023

Strokes involving the Recurrent Artery of Huebner are quite rare and are often asymptomatic. Here, we describe a rare case of recurrent infarctions involving the right Recurrent Artery of Heubner, likely due to small vessel disease. Our 32-year-old patient presented to the emergency department with sudden onset right-sided facial weakness, numbness, and difficulty with eye closure. A non-contrast head computed tomography scan and magnetic resonance imaging revealed an incidental subacute infarct in the territory of the right Recurrent Artery of Heubner. He was discharged on valacyclovir and prednisone for suspected Bell’s palsy, as well as aspirin, atorvastatin, metformin, and antihypertensives for secondary stroke prevention. Unfortunately, he was noncompliant with medications and lost to follow-up until he presented again more than one year later with a complaint of isolated right facial swelling and ipsilateral weakness. Imaging revealed an incidental new subacute infarct in the territory of the right Recurrent Artery of Heubner. Close follow-up of the patient and guidelines for appropriate management of secondary risk factors are discussed.
Arteriovenous Malformations: An Update on Models and Therapeutic Targets
Authors: Lucke-Wold Brandon
Published: September 2023

Arteriovenous malformations (AVMs) are an anomaly of the vascular system where feeding arteries are directly connected to the venous drainage network. While AVMs can arise anywhere in the body and have been described in most tissues, brain AVMs are of significant concern because of the risk of hemorrhage which carries significant morbidity and mortality. The prevalence of AVM’s and the mechanisms underlying their formation are not well understood. For this reason, patients who undergo treatment for symptomatic AVM’s remain at increased risk of subsequent bleeds and adverse outcomes. The cerebrovascular network is delicate and novel animal models continue to provide insight into its dynamics in the context of AVM’s. As the molecular players in the formation of familial and sporadic AVM’s are better understood, novel therapeutic approaches have been developed to mitigate their associated risks. Here we discuss the current literature surrounding AVM’s including the development of models and therapeutic targets which are currently being investigated.
Microsurgical Treatment of a Giant Intracavernous Carotid Artery Aneurysm in a Pediatric Patient. Case Report and Literature Review
Authors: Nathal Edgar
Published: September 2023

Introduction: Intracranial aneurysms in pediatric age represent 4 - 5% of all cases, and 20% are giant (>25mm). The main sites of occurrence are ICA and MCA; about 55% - 72.5% of cases present rupture and secondary SAH with a 10% - 23% mortality. Case Description: We report the case of a previously healthy nine-year-old woman that initiated severe right retroocular pain and holocraneal headache. Her relatives detected paresis of the III, IV, and VI cranial nerves three days later. After evaluation, an MRI showed the presence of a giant aneurysm in the cavernous portion of the internal carotid artery (ICA) with a mass effect. The patient was treated surgically through a high-flow bypass using a radial artery graft and trapping of the aneurysm. The patient had an uneventful postoperative course and was discharged three days after the operation to continue in follow-up at the outpatient clinic. Discussion: The options for treatment are endovascular treatment through flow diverters or stenting and coiling, with the risk of incomplete occlusion or thrombosis. On the other hand, the goal of surgery is the permanent occlusion through the proximal closure of the ICA if a balloon occlusion test shows good collateral circulation or by trapping the aneurysm combined with a high-flow bypass if the collateral circulation is not good or absent. Conclusion: Even when the surgical option was successful in this case, there is no consensus about the best treatment; the selection of the method to use in these aneurysms depends on the center´s experience when confronting this rare entity.
Premorbid Employment and Education as Predictors of Recovery in General Cognition ten Years After Stroke Onset - A Longitudinal Cohort Study
Authors: Hu Xiaolei
Published: September 2023

Background: We have recently demonstrated significant general cognitive recovery with delayed improvement of working memory 10 years after stroke in a unique longitudinal cohort.Aim: This study investigated demographic and clinical characteristics relevant to improved cognitive functions 10-year after a first-ever stroke. Materials and Methods: A prospective longitudinal cohort study was carried out in 38 middle-aged (mean age =54 at stroke onset) stroke survivors. Cognition was assessed thrice at one week, seven months, and ten years after the stroke. Working memory and visuospatial function were assessed with the Digit Span and Block Design subtests, respectively. General cognition was evaluated with the Mini-Mental State Examination at the two later time points. Multivariate linear regression was used to identify the variables that may significantly predict improved cognitive functions at 10-year follow-up. Results: We found that having a full-time job prior to the stroke, suffering an ischemic (as opposed to a hemorrhagic) stroke, and having a university education predicted significantly superior general cognitive function 10 years after stroke (R2 of 0.77, p <0.001), while working memory and visuospatial function at 1 week after stroke significantly predicted their respective functions at 10-year follow-up (R2 of 0.41, p = 0.003). Conclusions: Our results indicate that premorbid employment status and higher education as well as having suffered from an ischemic rather than a hemorrhagic stroke might predict superior cognitive recovery among middle-aged individuals 10 years after stroke.
Mechanical Thrombectomy Via Direct Internal Carotid Artery Puncture
Authors: Moreira Lima Vinicius
Published: September 2023

Introduction: Transfemoral access is the route of choice for endovascular treatment. However, anatomic variants may be an obstacle, leading to unfavorable outcomes due to difficulty in obtaining access and longer puncture-to-reperfusion times. Alternative routes should be considered in these cases. Objective: To report a case of thrombectomy performed via direct internal carotid artery puncture access. Report: An elderly patient presented with fluctuating neurological deficits (left-sided hemiparesis and dysarthria). Imaging showed ischemia in the right middle cerebral artery territory. The patient was referred for thrombectomy. Due to the tortuosity of the aortic arch, a radial approach was attempted, unsuccessfully. Direct internal carotid artery puncture was performed. The patient was discharged after 7 days with no deficits. Conclusions: Similar cases reported to date have used ultrasound-guided puncture of the common carotid artery. This route was not feasible in the present case, leading to direct puncture of the internal carotid artery. This high-risk maneuver was justified by the adverse clinical picture, and a successful outcome was achieved.
The Portrait of the Teacher
Authors: Hubetova I. V.
Published: September 2023

A teacher... pictures of careless childhood, sounds of the first school bell, the first answer board and all the things that happened for the first time in one's life pop up in memory of almost every person by mentioning of this word. I had luck not only with the first schoolteacher, memories and warm feelings about her will remain in my heart forever, but also with my teacher and mentor in adult life, a teacher whom I can call a true friend. This is Yury Lvovich Kurako. You can talk about him forever. He is a complex personality, and also he is talented, artistic, extremely curious, full of ideas, stout-hearted, tender, sentimental and very strict. He is an artist of his own destiny, and therefore his identity is inexhaustible.
Peripheral Sensory Stimulation for Neurological Disorders. A Novel, Non-invasive Therapeutic Option. Review Article
Authors: S. Nussbaum Eric
Published: September 2023

Peripheral sensory stimulation (PSS) represents a new area of therapy for patients with neurological disorders. Grounded in strong basic science research, PSS carries potential promise in the management of multiple diseases. We reviewed the literature regarding those conditions that represent reasonable targets for treatment with PSS including stroke, Parkinson’s disease, traumatic brain injury, and auto-immune, inflammatory illness. Potential mechanisms of action are discussed, and future avenues of investigation are described.
Comparative Analysis of Combination Therapy Regimens in Patients with Paranoid Schizophrenia with Non-Suicidal Auto aggression and Identified Signs of Resistance to Ongoing Neuroleptic Monotherapy
Authors: I.V. Kravchenko
Published: September 2023

A comparative analysis of combination therapy regimens was carried out in patients with paranoid schizophrenia with NSAA and identified signs of resistance to ongoing neuroleptic monotherapy. In total, in the period from 2015 to 2022, 155 patients with paranoid schizophrenia with NSAA were studied as part of a multicenter randomized longitudinal study. It has been established that the first-line therapy regimen in this group of patients is a combined regimen of clozapine with haloperidol.Introduction. The increase in the number of therapeutically resistant patients with paranoid schizophrenia with auto aggression remains one of the most pressing problems in psychiatry remains as the most common nosological unit [1,2,3]. At the same time, a large amount of research material has been accumulated on the factors and conditions that affect the formation of the state of resistance in such patients [4,5,6,7]. First of all, these include: a debut at an early age, an "erased" beginning, a continuous course, the dominance of negative symptoms in the structure of the pathological process, and the fading of the affective component. A special place among the clinical predictors of therapeutic resistance is occupied by psychopathic disorders with auto aggressive tendencies, traditionally considered within the framework of heboid states. At the same time, until recently, the main drug from the group of neuroleptics used to overcome resistance was clozapine [8,9,10,11,12,13]. In practice, up to 30% of patients remain intact to its action, which dictates the need for combination therapy [14,15,16]. This predetermines the search for new schemes for the use of medicinal drugs to solve this problem.
Управління невідповідностями в системі управління якістю
Authors:   ГО ", ПОПИК Олег ,   НДЦ ",   ЕКОПРОЕКТ"
Published: September 2023

У представленій роботі проведено сис­темний аналіз категорій "скарга", "претензія" та "невідповідність". Метою дослідження є дефініційно-категоріальне уточнення зазна­чених категорій, визначення наявної спільної атрибутивності та потенційних можли­востей підвищення ефективності організацій завдяки оптимізації відповідних систем управ­ління скаргами, претензіями і невідповіднос­тями. Для досягнення поставленої мети роз­глянуто основні методологічні підходи щодо адміністрування скарг, претензій та невід­повідностей, серед яких шість сигма (6σ), методології 8D, FMEA та інші. На основні ґрунтовного аналізу першопричин виникнення та вихідних положень, що лежать в основі категорій "скарга", "претензія" та "невідпо­відність", а також притаманної їм системної атрибутики, сформовано пропозиції щодо розгляду цих категорій як складових інтег­рального процесу управління невідповіднос­тями/скаргами, що дасть змогу оптимізу­вати управлінський ресурс, забезпечити високі якісні характеристики продукту і загальну ефективність функціонування організацій.
Функціонально-технологічні властивості борошняних сумішей для тіста
Authors:   Державний торговельно-економічний університет, КРАВЧЕНКО Михайло , ПІДДУБНИЙ Володимир ,   Державний торговельно-економічний університет, РОМАНОВСЬКА Ольга ,   Чернівецький торговельно-економічний інститут ДТЕУ
Published: September 2023

Застосування готових борошняних сумі­шей для виготовлення хлібобулочних, кулі­нарних та кондитерських виробів допо­магає оптимізувати технологічний процес вироб­ництва. Використання борошна з пророще­ного зерна пшениці у борошняних сумішах, яке має значно більшу харчову цінність, ніж звичайне, суттєво впливає на фізико-хімічні характеристики тіста, оскільки воно не містить клейковини, що визначально впливає на його структурно-механічні властивості. Саме тому важли­вим є дослідження оптимальної концен­трації такого борошна та технологічних умов його використання. Відтак, метою статті є вивчення властивостей борошня­них сумішей, виготовлених із пшеничного борошна вищого сорту, борошна з проро­щеного зерна пше­ниці та порошку керобу сорту Tylliria, і визначення їхньої техно­ло­гічної придатності для різних видів конди­терського тіста. Для цього досліджено функціонально-техноло­гічні показ­ники сумішей з обох видів борошна у спів­відношеннях від 10 до 90 % та порошку керобу у кількості 10 % від маси борошна пше­нич­ного вищого сорту. На основі проведених досліджень влас­ти­востей борошняних сумішей та тіста вста­новлено їхню низьку здатність утво­рю­вати тісто з високими структурно-механічними властивостями, і напрямом їх техноло­гіч­ного використання є бісквітне та пісочне тісто.
PROTECTION OF A HETEROGENEOUS TELECOMMUNICATION NETWORK FROM THE INFLUENCE OF DESTABILIZING FACTORS
Authors:   State University of Telecommunications, Bondarchuk A. P.
Published: September 2023

Natural and anthropogenic hazards and their impact on a heterogeneous telecommunication network are analyzed. The currently existing telecommunication network protection measures have been analyzed. A heterogeneous network is considered, which consists of sections of communication lines with the transmission of signals of different physical nature over different transmission media. Communication lines react differently to threats, which allows you to choose the line with the best indicators for transmitting information. Examples of enhanced precautionary measures for the protection of underground line-cable structures are presented. A cause-and-effect diagram of events that determine the state of the information transmission network - changes in emergency/non-emergency time intervals - is presented. The scheme of application of protection measures against dangerous events is shown. To verify measures, a matrix of their compliance with typical natural disasters was developed and relevant examples were given. It is proposed to evaluate the flexibility of the telecommunications network by its connectivity, which is characterized by the numbers of vertex and edge connectivity, connectivity probability. An algorithm for calculating path connectivity has been built. The scheme of the device for carrying out multi-channel transmission of information in a hybrid network is presented, which allows the selection of the channel with the best indicators for the transmission of information. The general scheme of the operation of the intelligent block is proposed. A proposal has been put forward to increase the flexibility of the network, which consists in the use of this device. The article proposes to evaluate the flexibility of the telecommunications network by its connectivity. It is proposed to use machine learning in the management of a heterogeneous telecommunication network, which will allow predicting a destabilizing factor, its possible impact, and issue an algorithm for preventing the impact or solving the consequences of the impact.
DEVELOPMENT OF SOFTWARE TOOL FOR EVOLUTIONARY DECODING OF BLOCK CODES
Authors:   National Aviation University, Kyiv, Komar O. M.
Published: September 2023

The approach to the development of a software tool for evolutionary decoding of block codes is presented. The key stages of the design process of this software tool are considered. The application of the Python programming language in the software implementation of the evolutionary decoding of block codes is substantiated. It was determined that this programming language provides a sufficiently simple and functional implementation of calculations in finite fields and evolutionary optimization procedures with built-in components and libraries. The generalized stages of evolutionary decoding of some block code are given. It is shown that hard decoding is first performed, and then an evolutionary search of the codeword based on the most reliable basis of the generator matrix of the block code is performed. A functional diagram based on processing the main stages of decoding of block codes using evolutionary optimization procedures is proposed. This diagram illustrates the proposed method of software implementation of the necessary functions by the components of the evolutionary decoder. The architecture of the software tool for the evolutionary decoding of block codes has been developed. The proposed architecture involves the use of existing libraries of block codes, computations in finite fields, evolutionary optimization and developed decoder functionality. The purpose of individual blocks and software modules of this software tool is considered. The results of the work should be used to increase the reliability of information transmission in existing and prospective radio communication systems. Also, the obtained results can be used in conducting experimental studies of the characteristics of various types of block codes that are used in modern electronic communications.
Security mechanisms in the cloud environment based on international standards
Authors:   State University of Telecommunications, Dakova L. V.
Published: September 2023

A standardized functional approach to the conformity assessment procedure has been improved, based on the specifics of the functioning of cloud technologies. A review of the existing frameworks, which are used for the evaluation and certification of the Cloud Service Provider (further to the СSP), in terms of compliance with the requirements of generally recognized security standards, was carried out. The proposed levels of guarantees provide for the development of special requirements for ensuring the security of information systems of cloud service providers in accordance with the classification of criticality of systems and data of potential consumers of cloud services. Guided by regulatory acts, norms of international standards and already considered national schemes for evaluating the cyber security of cloud products, services and services, a generalized list of requirements for the security of cloud service providers has been formulated, which covers all the necessary conditions and corresponds to the proposed levels of guarantees. An assessment of compliance with security standards was carried out, which is the starting point for determining information security policy and combating threats inherent in cloud services. The division into three levels of security guarantees, which should be met by the СSP when evaluating compliance, is proposed depending on the business needs of users and the criticality of the data processed and stored by the cloud information system. A generalized scheme of security requirements for СSP has been developed, built on the basis of well-known frameworks, which takes into account a multi-level approach to security guarantees, distributed responsibility for compliance with the listed requirements depending on the functioning model and determines the components of the cloud architecture that are sensitive to certain conditions. This article combines all the best standards of the United States and the European Union and the best security practices for using a cloud environment that is considered the most dangerous from the point of view of information security, but convenient to use.
Integration of solar energy supply on a smart distribution board based on IoT system
Authors:   State University of Telecommunications, Zayachkovskyi A. V.
Published: September 2023

Modern electricity management of solar power supply at the smart distribution board is heavily dependent on the Internet of Things (IoT). It is still difficult to create practical, affordable intelligent systems for condition monitoring, protection and control at the smart distribution board of distribution networks. Smart grids use the capabilities of information and communication technologies, especially the Internet of Things, to improve the sustainability, quality and productivity of energy production and demand forecasting, as well as to reduce resource consumption and increase the integration of renewable energy sources. The performance of the developed system is evaluated for a variety of residential electrical loads with different energy consumption patterns on a smart distribution board. In this project, the photovoltaic tracking system as well as the cleaning system will be connected to the smart board. All the input data will be collected and sent via Bluetooth/WI-FI by a working prototype built on an Arduino board, which can independently collect and monitor the real-time energy and environmental conditions of solar plants. The mobile application is also used to allow individual users to monitor the system in real time, notify users of electrical system problems, display real-time energy consumption, and provide other important notifications and alerts to the remote user when there is a deviation of solar power production quality parameters from a predefined set of standard values. A number of improvements are also proposed for further integration with Internet of Things (IoT) and smart home technologies.
Methodology for assessing the influence of non­fluctuation interferences on the immunity of receiving discrete signals with multi­position phase manipulation
Authors:   State University of Telecommunications, Turovskyi O. L.
Published: September 2023

The work deals with the assessment of the impact of non-fluctuating interference on the interference immunity of the reception of discrete signals with multi-position phase manipulation. It was determined that the improvement of immunity under the influence of fluctuating interference and further scientific work on improving the efficiency of data transmission form a new, urgent scientific task to assess the impact of non-fluctuating interference on the immunity of TCM based on BFM signals. It was found that the main types of non-fluctuating interference that can affect the immunity of reception of discrete signals with multi-position phase manipulation are the following: harmonic interference, phase-manipulated interference, relayed interference, scannin interference, chaotic impulse interference, multiplicative interference. In order to reduce the impact on the immunity of TCM based on BFM signals, an appropriate methodology for assessing the impact of non-fluctuating interference on the immunity of reception of discrete signals with multi-position phase manipulation is proposed. The following procedure is proposed as the above methodology. Formation of TCM parameters of data transmission on the basis of BFM signals according to the functional purpose. Development of a TCM interference protection model for data transmission based on BFM signals under the influence of fluctuation interference, its implementation and evaluation of application effectiveness. Analysis of conditions and factors that can affect the formation of non-fluctuation disturbances on TCM based on BFM signals. Determination of the list of non-fluctuating interferences that can be formed under the influence of specified conditions and factors, in which the TCM of data transmission based on BFM signals functions. Evaluation of the impact of non-fluctuation interference on the effectiveness of TCM interference protection based on BFM signals. Development of recommendations for reducing the impact of non-fluctuational interference on the effectiveness of TCM interference protection based on BFM signals.
Implementation of a model for deploying 6th generation mobile networks using drones
Authors:   State University of Telecommunications, Poplavskyi D. V.
Published: September 2023

In this article, options will be considered for implementing a network based on 6G mobile communication technology, which is currently under development. But, due to the fact that at the moment, drones do not have a significant energy reserve in their batteries, which limits productivity, and therefore, drones will have to go down to the ground to recharge. Therefore, it will be proposed to implement the use of tethered UAVs, hereinafter referred to as tUAVs, in order not to leave the area covered by tUAS without a signal. Thus, a system is propose that will be connected to a ground station, hereinafter referred to as the GS, using a cable through which power and data will be supplied to the UAV, which can provide flight for up to several days. A comparison between the tethered UAV and unmanned aerial vehicles (UAVs) will also be described. In addition, potential applications will be described, with a Monte Carlo example looking at the performance between a tUAV and a uUAV, considering coverage where the tUAV is available 70% of the time and 30% is unavailable due to maintenance/repair. Here, the modelling results show that a tethered UAV with a 120 m tether length can provide up to a 30% increase in coverage probability compared to a UAV. Finally, challenges, design considerations, and future research directions for implementing the proposed model are described.
Systems of protection against violations а guarantee of the financial stability of operators
Authors:   State University of Telecommunications, Ruzhynsky V. G.
Published: September 2023

An analysis of the types of traffic-related frauds on telecommunication networks was carried out. Violations on telecommunication networks are the actions of subscribers, telecommunications operators or third parties who are directed to receive telecommunication services at a lower rate or without payment. CFCA experts count about 200 types of violations on telecommunication networks. The most common violations on the part of operators are the unauthorized termination of incoming long-distance and international traffic to the public network under the guise of a local one, without appropriate contracts. Abuses lead to significant loss of income. The most common among subscribers are third-party connection to the subscriber line in order to receive free telematics services of the "900" service, making long-term international calls, and organizing unauthorized meeting points. On the part of third parties, it is a violation to use hardware and software to receive international traffic from the Internet and complete it on a public telecommunications network under the guise of a local one, which leads to interference in the operation of communication means, substitution of call information. The fight against misuse of telecommunication networks relies to a large extent on the analysis of data about services and data contained in settlement systems with subscribers and operators. Detection of suspicious actions of subscribers and their analysis is the main operating principle of modern Fraud Management System (FMS) protection systems. The key criteria for the effectiveness of FMS are the speed of work, the flexibility of setting up algorithms that ensure the detection and analysis of incidents, and the availability of standardized interfaces for integration with billing platforms. Practical recommendations for creating protection systems against Fraud Management System (FMS) violations are provided.
Event­oriented architecture in the system for processing large data streams
Authors:   State University of Telecommunications, Kuzminykh V. O.
Published: September 2023

The article discusses approaches to the implementation of the microservice architecture of the system for processing large data flows when collecting information on the main event-oriented approach in the organization of managing the sequence of use of individual microservices, which provide access to information sources and the extraction of relevant data corresponding to the user's request. This is important when processing large data flows from heterogeneous information sources, especially when the task is to minimize the total time of collection and processing of large data flows. This, in turn, poses the task of minimizing the number of requests to information sources to obtain a sufficient number of units relevant to the data search request. The creation of effective systems for processing big data requires constant development of approaches to the architecture of building software applications. An approach to the construction of the software system architecture is proposed, which makes it possible to manage the selection of microservices adaptively, in accordance with the events that occur during information collection, and thus form the choice of information sources based on the evaluation of the effectiveness of obtaining relevant information from them. The event-oriented microservice architecture makes it possible to adapt the operation of the software system to the loads on individual microservices and to increase the efficiency of their work by correcting calls to information sources based on the analysis of relevant events that occur during the collection and initial processing of the received data. Based on the analysis of the current state of information collection, new instances of containers can be created to extract information from the most effective sources and, thus, improve the efficiency of the system as a whole. The use of event-oriented microservice architecture can be especially effective in the development of various information and analytical systems that have the need, according to user requests, to refer to various sources of information based on their relevance, and to process large data streams when collecting information.
Using time series databases in edge computing architecture
Authors:   State University of Telecommunications, Khomenchuk V. O.
Published: September 2023

A vast amount of data is constantly being generated from a large number of sensors and monitoring systems. With the rapid development of IoT technologies in recent years, there are increasingly more IoT systems that generate a large number of queries to support the operation of smart homes, smart cities, smart farms, smart agriculture, smart factories, smart manufacturing, smart industry, autopilots, and many others. In order to reduce the number of queries to the main cloud, this article describes load balancing solutions for edge computing nodes, which will also reduce the delay in sending and processing. The article also describes the features of time series databases for their use in the IoT Edge Cloud infrastructure. IoT-based systems typically require a large amount of data. A large volume of data is collected from numerous sensors, and the streams of this data are constant. Therefore, storing and analyzing data are the main challenges that need to be addressed. In recent years, big data analytics have been widely used to analyze data collected from IoT systems to improve fault detection and diagnosis. Due to the intensive nature of processing big data, analysis is usually done in the cloud. However, sending data to the cloud can result in significant communication delays. Additionally, many fault detection and diagnosis tasks need to be performed in real-time. In response to this balancing of time and resource constraints, a new computing infrastructure has been developed that combines IoT, Edge, and Cloud. Pre-computations necessary for timely decision-making can be done on nearby Edge gateways and local networks. Integrated analytics can be left in the cloud, while more complex and/or accurate analysis results can be sent back to Edge devices and IoT devices to improve decision-making processes or support changing trends.
Methodology for ensuring the sustainability of the information direction in the conditions of information and technical influences on the elements of the memory communication network
Authors:   State University of Telecommunications, Shuklin G. V.
Published: September 2023

The article presents a methodology for ensuring the stability of the information direction (vector) in the conditions of information and technical destructive impacts (ITDI) on the elements of the memory communication network. The possibility of realizing the transition from the approach of object protection of correspondents and elements of communication networks to the approach of group protection is substantiated, as well as increasing the reliability of data transmission under conditions of blocking the spread of destructive ITI and corresponding nodes of their sources. It is shown that ensuring the stability of the information direction (vector) is achieved, firstly, by increasing the security of correspondents and elements of the communication network due to the controlled physical separation of the paths for receiving and transmitting information directions (vectors), which excludes the presence of a physical path for the implementation of destructive ITEs, and, secondly, by increasing the probability of data transmission, reducing the time of their transmission and the load on the bandwidth of communication lines in the conditions of network reconfiguration, failures and overloads of its elements due to the use of in the process of protecting against destructive ITOs.
Information communication networks as an object of intentional destructive electromagnetic influences
Authors:   State University of Telecommunications, Kryuchkova L. P.
Published: September 2023

Deliberate destructive electromagnetic influences formed on the basis of existing technical means are an effective type of modern radio-electronic information and technical influences on information and communication networks. The radio-electronic material basis of information communication networks is potentially vulnerable to the influence of means of radio-electronic suppression. The need to ensure the high-quality functioning of modern information and communication networks under the conditions of intentional electromagnetic destructive effects requires correct and timely management decisions from the network management system to prevent undesirable consequences, which necessitates the creation of more advanced management methods. The purpose of the publication is to consider the vulnerabilities of modern information and communication networks from intentional destructive electromagnetic influences, which is understood as the deliberate creation of a powerful electromagnetic influence on electronic and electrical systems for criminal or terrorist purposes in order to disrupt their functioning. The effects manifested at different levels of information communication network functioning as a result of intentional destructive electromagnetic influences are considered. Based on the results of the research, the following conclusions can be drawn: intentional destructive electromagnetic influences are aimed at destroying information flows circulating between network elements; decrease in the speed of information exchange between elements of the control system, which significantly increases the duration of the control cycle and, as a result, reduces the efficiency of network management; ensuring sufficiently massive and long-term failure of network technical means; existing systems and methods of radio electronic suppression are focused on suppressing only individual channels of the network by disrupting the functioning of communication protocols at the physical and channel levels of the OSI model; in the future, there is a threat of transition to the use of individual elements of the radio segment of the information communication network as a kind of «entry points» for radio-electronic information and technical influences, which will disrupt the network processes of information transmission and spread their destabilizing influence on the entire network, including its wire segment. In the article presented to the readers, only some aspects of the researched topic are highlighted. Currently, the authors continue active research work in this subject area.
The model for evaluating the influence of the phase error of the coherent demodulator synchronization system on the bit error probability of multi­position phase manipulation signals
Authors:   National Aviation University, Kyiv, Meleshko T. V.
Published: September 2023

In the article, a new topical scientific task is solved regarding the assessment of the impact of the error of the synchronization system of the coherent demodulator on the immunity of signals with multi-position phase manipulation. The probability of a bit error is proposed in the article as a criterion for evaluating the immunity of coherent reception of signals with multi-position phase modulation in the presence of a phase error. A model for evaluating the effect of the error of the coherent demodulator synchronization system on the bit error probabilities of signals with multi-position phase manipulation is developed and presented. The presented model is based on the probabilistic characteristics of the appearance of a bit error of a signal with multi-positional phase modulation relative to the accepted level of the phase error of the coherent demodulator at different values of the signal-to-noise ratio at the input of the coherent receiver for signals with different positions. The results of the evaluation of the probability characteristics of the appearance of a bit error in a signal with multi-positional phase modulation in the presence of a phase error of a coherent demodulator showed that with an increase in the positionality of the BFM signal, the influence of static and random errors of the synchronization system on the probability of bit errors increases. At large signal-to-noise ratios, a small phase estimation error, from π/180 to π/90, leads to a significant increase in the probability of bit errors. With random phase fluctuations for signals with M ≥ 4, when the variance Dϕ changes from 0 to 0.01, the error probability can be changed by one or two orders of magnitude. The obtained results allow us to come to the conclusion that during the reception of BFM signals, the permissible value of the carrier phase estimation error depends on the positionality of M and varies from π/36 – π/72 for 2-FM to π/180 for 32-FM.