Connecting Link Research Articles

Dispute on the Internet: the format of discourse, linguistic technologies, modern language tactics

The concept of discourse is fundamental to modern linguistics. Discourse is a connecting link for all linguistic research, and modern ideas about discourse, without exaggeration, reflect the process of formation of linguistic science. The purpose of this work is to analyze the linguistic and stylistic features of the dispute on the Internet, namely: the format of discourse, linguistic technologies, and modern language tactics. The subject of the study is the debate on the Internet as a way to find out the positions of the participants in the discussion. During the study, a number of general scientific methods were used: the method of analogy, the method of generalization, the method of observation, the method of comparison, the method of experiment, the method of analysis, and the historical method. As a result of the research, the format of discourse, linguistic technologies, and modern language tactics of debate on the Internet were analyzed. Thus, it is emphasized that in the debate on the Internet, a combination of verbal and nonverbal components of the message realizes such an important feature of media discourse as multimedia. Non-verbal means of communication become a kind of background for the message, which thus receives additional expressive-emotional-evaluative overtones, which helps to put in the mind of the recipient a particular idea. In addition, the extreme pragmatism of modern man creates new challenges for its information. Today, to enhance the "presence effect", it is necessary to create the illusion of a new reality, an integral part of which is Internet discourse.

АНАЛИЗ СОСТОЯНИЯ ФИКСИРУЮЩЕГО ВИНТА ПРИ РАЗЛИЧНЫХ ТИПАХ СОЕДИНЕНИЙ ИМПЛАНТАТОВ И АБАТМЕНТОВ

Subject. The design of the implant-suprastructure connection is one of the key factors influencing the success of implant-supported prosthetic treatment.
 Different types of connection have their own biological and mechanical characteristics, on the knowledge of which the success of the patient's rehabilitation directly depends.
 Implants are permanently exposed to a cyclic chewing load, which spreads through the prosthetic structure to the internal connection, including the implant itself, the suprastructure and the fixing screw.
 The retaining screw is the weakest link in the internal connection of the implantation system.
 A clear understanding of the biomechanics of the implantation system allows you to optimize individual treatment planning and reduce the risk of complications.
 Objectives. Analysis and search for patterns of occurrence of biomechanical complications in various types of connections between the implant, screw and abutment. Determination of the advantages and disadvantages of using implant systems with different types of connection in orthopedic treatment based on implants, in order to improve the quality of planning and orthopedic treatment.
 Methods. Literature review was carried out to assess the state of the fixing screw of an implant in various types of implant connections. To write the article, more than 90 local and foreign sources were analyzed on electronic resources PubMed, Medline, Cochrane, Elibrary, Cyberleninka for keywords. 
 Results. The literature review describes the current understanding of the causes of biomechanical complications arising in the connection of a dental implant, abutment and fixing screw.
 Conclusions. The results of our analysis allow us to conclude that the patterns of the occurrence of biomechanical complications in various types of connections between the implant, screw and abutment are being actively studied, however, the effect of the type of connection on the fixing screw requires additional study.

Cloud cover disrupts the influence of the lunar cycle on the growth of peat moss Sphagnum riparium

Moonlight is the connecting link between living processes and the lunar cycle, suggesting that its elimination can seriously weaken the biological effect of the lunar cycle. Cloud cover, especially its lower level, effectively absorbs moonlight under natural conditions. However, it is unclear how this process affects the sensitivity of plants to the lunar cycle. To address this, I analyzed the change in the growth response of the peat moss Sphagnum riparium Ångstr. (Sphagnaceae, Bryophyta) to the illumination of the moon due a gradual increase in the low cloud cover. The data on the growth of this species were obtained as a result of extensive six-year monitoring carried out over the full growing season in the mires of Karelia (Russia). In total, 1081 days of the Sphagnum growing were covered, 161190 growth increment of shoots were measured and 1075 values of the Sphagnum growth rate were obtained. As a result, it was found that from certain values, low cloud cover disrupts the influence of the lunar cycle on the growth of S. riparium. Under clear and little cloudy sky conditions, the illumination of the moon most strongly inhibits the growth processes (r varies from −0.434 to −0.366; p < 0.001). With the cloud cover from about 40%, this inhibitory effect begins to dramatically weaken. With the cloud cover of about 60%, it reaches a significance level (r = −0.182; p = 0.01), and with a further increase in cloudiness it becomes insignificant. This finding confirms the influence of the lunar cycle on plants through variations in the moonlight and indicates that cloud cover can strongly control the plant response to the lunar cycle.

Employee’s Competence Profile for Adaptive Organization Management

Abstract Background and purpose: Employees with their knowledge, skills and values are a connecting link between the deep organizational transformations and new technologies. In this regard, the human resource management system needs new approaches and tools for the diagnostics, training and personnel development based on the synchronization of the organization and the employee’s values. The study aim is to develop a comprehensive methodology for building an employee’s soft skills profile in order to form personalized educational trajectory and an adaptive management system creation. Methodology: An approach to the soft skills profile’s formation through broadcasting of the description of personality’s behavioral indicators into actual supra-professional competencies is considered. Modeling and automation of the employee profile’s soft skills was carried out. Statistical observation and empirical confirmation were used to evaluate the developed methodology. 115 respondents from different fields of science and technology from Reshetnev University took part in the diagnostic. Results: The results show that the proposed complex automated personality diagnostics is valid. And it allows you to visualize the soft skills profile, determine the level of competencies’ expression and identify the directions of the employee’s individual development. Conclusion: The study offers a comprehensive integrated methodology which allows you to assess the formation level of representatives’ soft skills of various fields of activity. This development can be used both in the educational environment to form an education ecosystem in accordance with the requirements of the innovative economy development and in the enterprise management system to increase the production potential of both employees themselves and enterprises.

Monuments, Memorial Sites, and Commemoration Sites, Recount History

Over time, the live memories of survivors have disappeared, and it has become clear that the memory of the Jewish Holocaust could disappear entirely in the absence of institutional efforts to preserve it. The understanding that collective memory can be preserved only through proactive efforts led to the development of formal and informal curricula for Holocaust education. The main assumption is that Holocaust education has the potential to generate a moral transformation. In light of this conclusion the question is: What kind of changes do we seek and how should we accomplish them? This study deals with a case study of one of the constitutive historical events of the 20th century: commemoration of the Holocaust. The study focuses on the Experiential Learning Method of educating about Holocaust remembrance and commemoration and about Holocaust monuments. Over the years memorial centers have been added, which contain additional monuments commemorating the story of a specific place and/or personal stories. One of the currently customary methods of commemoration in Israel is the journey to Poland, to the labor, concentration, and death camps, to the various memorial sites and monuments. This journey is undertaken by young and old, groups and singles, from all over the world and particularly from Israel. Since many of those taking the journey are young people at an age when personal, national, and historical identity is formed, a time when the young acquire their educational values, it is particularly important to ascertain who is charged with passing on the beacon of memory. This leads to weighty questions regarding the identity of the guides who lead these journeys and the contents they choose to impart to the participants, the guidance sites, and the method of guidance. Who will tell the story? How will the story be told? What will remain of the story? This study discusses in addition, a case study of guides from Israel charged with imparting this chapter of human history. In order to explore their impact, interviews were held with 47 guides, the large majority of whom are Israeli born, a majority academics, and many hold advanced degrees. The research findings indicate that they aim the commemoration beacon primarily at guidance sites in Poland. The study explored other diverse essential parameters regarding the profile of “guides to Poland” – where did they study? What is their personal affiliation with the subject? What is their position on the universal and Jewish narrative of the Holocaust? In light of the interviews conducted, it appears that almost all of them have the necessary tools to convey the most complete and comprehensive educational message. Accordingly, this issue was explored and most of the guides reported that the most influential message of commemoration is conveyed primarily through visits to camps and ghettos in Poland. This conclusion generates a theoretical, practical, philosophical, moral, and educational question indicating the “exporting of historical memory”. Should our entire educational focus indeed be exclusively on Poland? How can we preserve the ethos of the affiliation between the Holocaust of the Jews and heroism in the Holocaust, as well as heroism in Israel and its building, if we disregard the many commemoration and memorial sites within Israel? Do the journeys to the camps and to the valley of death in Poland, which are led by these guides, not create a distortion in the instilling of Holocaust remembrance and heritage, by disregarding the many commemoration sites and monuments throughout Israel? Aiming the beacon of commemoration at Poland, outside Israel, prevents exposure of the public, and particularly teenagers, to the natural association formed in Israel between Holocaust and revival, which preserves the connecting link between the generations.

Cache‐enabled reinforcement learning scheme for power allocation and user selection in opportunistic downlink NOMA transmissions

Non‐orthogonal multiple access (NOMA) allows multiple user equipment (UE) to simultaneously share the same resource blocks using varying levels of transmit power at the base station (BS) side. Proper allocation of transmission power and selection of candidate users for pairing over the same resource block are critical for an efficient utilization of the available resources. Optimal UE selection and power splitting among paired UEs can be made through an exhaustive search over the space of all possible solutions. However, the cost incurred by such approach can render it practically infeasible. Reinforcement learning (RL) deploying double deep‐Q networks (DDQN) is a promising framework that can be adopted for tackling the problem. In this article, an RL‐based DDQN scheme is proposed for user pairing in opportunistic access to downlink NOMA systems with capacity‐limited backhaul link connections. The proposed algorithm relies on proactive data caching to alleviate the throttling caused by backhaul bottlenecks, and optimized UE selection and power allocation are accomplished through the continuous interaction between an RL agent and the NOMA environment to increase the overall system throughput. Simulation results are presented to showcase the near‐optimal strategy achieved by the proposed scheme. © 2022 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

Analysis of optical networks in presence of nodes noise and crosstalk

Abstract Optical packet switching has gained lot of momentum in last decade due to the advantages of optical fiber over copper cables. Optical switching is beneficial in optical networks which form connections of links and switching nodes. In these high speed networks minimum delay and high throughput are two important parameters which are considered. To minimize network delay shortest path algorithm is used for route selections. In previous studies while choosing shortest path distance among various nodes is considered. In this work we have shown that it is necessary to consider both distance and number of hops while choosing path from source to destination to minimize power per bit used for the transmission.

Design of efficient location‐based multipath self‐adaptive balancer router using particle swarm optimization in wireless sensor network

SummaryThe power sensor terminals control in wireless sensor network (WSN) communicate within a small number of its radio range. As a branch operating based on the cluster routing protocol, it has proven to be effective in network topology management, energy reduction, and path connection link quality of the path. Location‐based clusters are categorized into member nodes and group/cluster heads (CHs). The CH election process increases the overhead of the network. The processing and energy limitations of the nodes are considered for the CH election process. The allocation of system resources is the major issue in the area of networks. In this work, the proposed multipath self‐adaptive balancer routing‐based particle swarm optimization (MLBAR‐PSO) achieves load balancing by means of the link quality of the route and the calculated average latency and reliability of the path. In this way, different trust values are set in each category. The forwarding node value is the value of each node based on the weight value, which is calculated based on the energy ratio of the node and the distance between the hiding node and the target node. Particle swarm optimization (PSO) selects the head cluster from a specific location within the cluster to enable other nodes to interact with the CH without spending energy. Also, the algorithm is used to find the optimal path for the base station and significantly increases the energy to reduce the distance and delay over the lifetime of the network.

A modified connectivity link addition strategy to improve the resilience of multiplex networks against attacks

Current studies have shifted from the analysis of single-layer network to multi-layer network. However, the performance of multi-layer networks has been significantly influenced by inevitable disturbances; therefore, the resilience of such networks must be maintained. Previous studies on the resilience of multi-layer networks have mainly focused on interdependent networks rather than on multiplex networks, which means that the effectiveness of current methods to improve the resilience of multiplex networks remains limited. To solve these issues, this study develops a two-layer multiplex network and describes failure propagation models by motifs in single-layer and multiplex networks. An approach to evaluate the resilience of multiplex networks is proposed, followed by strategies for its improvement. In particular, an extensive investigation into the effectiveness of connectivity link addition strategies to protect against degree-based targeted attacks is presented. A modified connectivity link addition approach based on degree deviation is proposed to find an optimal strategy under cascading failure to maintain the resilience of multiplex networks from a complex network perspective. Finally, some numerical examples and a real case study of EU-AIR multiplex networks are presented to illustrate the effectiveness of the proposed approach.

Английские структуры-носители вторичной предикативности с точки зрения перевода

The paper looks into English semi-predicative structures: the Infinitive as a connective link and the Nominative absolute participle construction and the ways they might be rendered into the Russian language. The rationale behind the choice of the translation strategy is based on identifying the grammatical functions of these constructions in a sentence, their semantics and communicative significance. The analysis of the Infinitive as a connective link is focused on discerning its most characteristic features differentiating it from the infinitives of purpose, result/consequence and cause, as well as additional meanings it brings into a sentence. There is evidence to suggest that the Infinitive as a connective link is always the communicative peak of a sentence as it brings absolutely new information which appears quite unexpected and often upsetting for the subject. The main emphasis in the analysis of the English Absolute construction is made on revealing the type of the adverbial modifier — the role it takes on in a sentence and communicative significance of this information. Empirical data revealed a close link between the degree of communicative dynamism of the Absolute construction and its grammatical function in a sentence. The Absolute construction in the function of an adverbial modifier of cause/ time is commonly thematic, while the functions of an adverbial modifier of attendant circumstance/manner make this information rhematic in a sentence. The findings afford ground for building transformation patterns, which can be used in English-Russian translation. Apart from this, the study results help develop a strategy of making the best use of these constructions while translating from Russian into English.

ՍՅՈՒՆԻՔԸ ՈՐՊԵՍ ԱՌԵՎՏՐԱԿԱՆ ԵՎ ՄՇԱԿՈՒԹԱՅԻՆ ԽԱՉՄԵՐՈՒԿ (ԸՍՏ ԴՐԱՄԱԿԱՆ ԳԱՆՁԵՐԻ) / SYUNIK - COMMERCIAL AND CULTURAL CROSSROADS (BY HOARD)

Due to its historical, political and geographical position, Syunik has been one of the important junctions of trade routes for centuries. Among the evidence of all this are the numerous found treasures of money and individual coins, covering a long historical period - from antiquity to the late Middle Ages - without a break. In this work, hoards found in different places of Syunik, stored in the History Museum of Armenia, were highlighted. As a result of the study, they were classified by issuing countries, by period, the typology of coins was given, the iconography and the circumstances of their discovery were classified and considered. The hoards include Seleucid, Parthian, Sassanian, Mongolian, Arabic, Persian, Ottoman, Western European and other coins, the study of which may be of great source and significance for solving historical issues. In this context, the study of coins can be of great importance in solving existing geopolitical problems. Money, as an important political, social, economic, historical and cultural object of the country, reveals trade and economic relations between countries in different periods. In this sense, hoards are important. The discovery of numerous hoards confirms the importance of the region in the global process of transit trade, as well as the existing interactions between peoples. The region played an important role in the global trade process, being located on transit routes connecting countries that played a large role in trade relations. It was a connecting link from the trading cities of Persia to Armenia and from here to the important trading centers of the Black Sea. Thus, for centuries, Armenia has been considered an economic buffer country and a neutral area for international trade activities. In this process, the role of the Armenian merchant class in the development of the history, culture and economy of the Armenian people is invaluable. The Armenian merchant class acts as a connecting link between European and Asian countries, promoting the development of cultural exchanges between peoples.

Development institutes in the government and business partnership

The article deals with the activities of national development institutions as the most important instrument of public policy for the development of investment potential of the business community and the promotion of various forms of public-private partnerships. The results of the Accounts Chamber of the Russian Federation’s audit of the institutes of development efficiency and their use of allocated resources are analyzed. An assessment is made of the ongoing reform of development institutions, proposals and recommendations are developed, primarily in the managerial aspect, to achieve their optimal state as a connecting link between the state and business.

Ценностно-смысловые приоритеты субъект-субъектного взаимодействия в высшей школе в ракурсе когнитивной парадигмы

The relevance of the article is due to the need to determine the role of the cognitive paradigm in increasing the effectiveness of subject-subject interaction in the educational process of higher education, this interaction contributing to the development of the educational process's subjects with axiological priorities. The authors solve the problem of revealing empathic reserves and mechanisms of interaction between a teacher and students that allow the educational process to be carried out in an atmosphere of comfort, trust, openness, which determines humanistic semantic formations and value-based transformations of the individual. In the article, on the basis of participation seen as the opposite of domination, coercion and authoritarianism, and as a reserve for creating a favorable psychological climate for cooperation, the authors compare the basic and advanced participatory skills of the teacher. The authors define the importance of the cognitive component of empathy as a connecting link in the development of value-based awareness, understanding and regulation of educational subjects' cognitions and emotions that affect the success of their interaction. Empathy is revealed as a form of rational-emotional-intuitive reflection of another person, which predicts one's behavior in subject-subject interaction. The authors define the position of the teacher in subject-subject interaction from the perspective of the cognitive paradigm, which, in the logic of empathic conditioning of this interaction, is transformed into the role of a guide. Such a position of the teacher is formed on the basis of the development of a step-by-step algorithm for the development of the teacher's emotional identification as a structural component of empathy. Experimental results of the study of empathic reserves and mechanisms of interaction between a teacher and students are presented on the basis of a survey of 48 second-year students of two groups (Gr.07-911 and Gr.07-911k) of the Chemical Education specialty, the Institute of Chemistry named after I.M. Butlerov of Kazan Federal University, and 41 people of two groups (Gr. 3A and Gr. 3B) in the Art of Ballet and Art of Dance specialties of the final year of the Kazan Choreographic School. The survey used the method of diagnosing the level of empathic abilities of V.V. Boyko. The selected diagnostics made it possible not only to obtain the qualitative characteristics of each channel of empathy of the students and their identification, but also, most importantly, to obtain personality-oriented information about the attitudes that promote or hinder empathy in subject-subject interaction for each surveyed student.

"Немецкий вопрос" в казахстанско-германских отношениях в начале 1990-х гг.

In the article based on new archive data from Republic of Kazakhstan Ministry of Foreign Affairs fund the factor of German diaspora in regards of Kazakhstan-German relations' establishment and development is considered.“German Issue” is considered as ethnical Germans' requirement to revive their national identity and to restore unfairly destroyed statehood. For this purpose, Germans' public organizations were established, e.g. “Wiedergeburt” (“Revival”). The failure to resolve the “German Issue” led since the late 1980s to Germans' massive migration from the USSR and later from post-Soviet countries. The largest outflow of German population was from Kazakhstan, where almost half of all soviet Germans lived. The FRG struggling from excessive number of entrants stopped the migration flow, at the same time German diaspora located in Kazakhstan could be useful for German entrepreneurs. Kazakhstan Government also wanted to stop Germans' massive departure; moreover, German diaspora could attract German investments to Kazakhstan. Both countries governments' interests coincided in regards of ethnical Germans holding back on their places of residence. After discussions the countries introduced the mutual concept that Kazakhstan government will ensure the revival of culture and language of German ethnos, at the same time help from Germany will be used also in favor of those “nationalities that live together with Germans”. Both countries' governments have chosen public organizations of Germans in Kazakhstan as intermedium. Separate “Wiedergeburt” communities formed in Republic in 1989, then in 1992 they were united. The consolidation of Kazakhstan Germans' public organizations was conducted with German politics' participation. On the February 11, 1992 the countries established diplomatic relations. DuringN.A. Nazarbayev's visit to FRG in September 1992 “German Issue” was discussed as one with the highest importance and was connected to Kazakhstan economic relations development. However, German national-administrative units were not created in Kazakhstan. Another side of the issue - Kazakhstan Germans' ethnical identity development - was realized by “Revival” organization with support of Germany and Kazakhstan. German side invested a lot of funds and efforts to help German ethnos. In November 1994 Kazakhstan Republic government adopted “Complex Program of Ethnical Revival of Germans residing in Kazakhstan”. In 1994 Intergovernmental Kazakhstan-German commission on the Germans' issues living in Kazakhstan was formed. However, on this stage the Germans did continue leaving Kazakhstan, slowing down although; at the same time German investments, as the whole German business, were poorly presented in Kazakhstan in 1990s. Nevertheless, the relations between Kazakhstan and Germany were established and were developing and “Revival” became a connecting link between two countries' governments and Kazakhstan Germans.

НАГЛАСАТА И ПСИХОЛОГИЧЕСКАТА ИНДИВИДУАЛНОСТ НА СТУДЕНТИТЕ ЗА ПЕДАГОГИЧЕСКА ДЕЙНОСТ

An actual problem of higher education is the formation of students' mental readiness for pedagogical activity in the context of their individual characteristics and potential opportunities. Attitude is a mental state of readiness for a certain activity, it is the psychological content of the interaction between the student's need for pedagogical activity and the objective educational situation, a prerequisite for the emergence of his or her readiness for activity with a certain orientation. There is a dialectical unity between stability and changeability in the state of attitude, which explains the individuality of the individual student, the non-repeating forms of their mental organization as a certain way of an ordered system of his or her behavior. A connecting link is between the motivational and target substructures of the activity, on the one hand, and the operational one, on the other. The development of the professional attitude of the students is realized through the principle of unity between the individual characteristics of the personality and the specificity of the pedagogical activity. The necessary conditions for this are: an actual need of the subject at a given moment and an objective situation for its satisfaction; position taken by the person, which expresses their attitude to a given line of behavior, to the tasks before them, and selective mobilization for their implementation. This requires: continuous active pedagogical activity of students in an immediate educational environment; ensuring the mastery of its operational, organizational, psychological and socio-moral aspect; stimulating the development of social motives and attitudes; the preparation for it should be on a reflexive basis, so that it is personally significant for them; the formation of important qualities such as organization, responsibility, resourcefulness, patience. The development of the attitude towards pedagogical activity begins with building a general attitude towards it as a complete expression of the student's personality and ends with an attitude towards self-management of one's own pedagogical activity.

Персонаж-читатель в романе Ю. Фельзена «Письма о Лермонтове»

The article examines the plot of reading and interpreting Mikhail Lermontov’s works by the reader-character of the novel Letters about Lermontov (1935) by Yuri Felzen, a writer of the younger generation of Russian emigration. The love conflict of the central character (he is the narrator, the author of letters to his beloved who left him) is overcome by the act of writing and the departure into the world of culture, the value center of which for him is Lermontov. Strategies for reading Lermontov by a writing character are close to the biographical method - no separation of the writer’s life and work, identification of the author with his hero (Pechorin, Demon, poetic lyrical hero). The purpose of learning Lermontov’s personality through his works (diaries, poetry, poems, the novel Hero of Our Time, etc.) is to find an existential landmark (perseverance and courage before the blows of fate) and an aesthetic principle (patience and sincerity in creative work). In self-identification with Lermontov-Pechorin, an act of self-knowledge, recognition of inconsistency with the ideal, and behavioral self-correction take place. The second line of letters about Lermontov is the formulation of the essence of literary creativity, the author’s version of the history of Russian literature and its fate in the modern world. According to the character of the novel, classical literature in the twentieth century becomes incomprehensible and unable to agitate, but, dying, it conveys its artistic discoveries to modern literature, which means that art continues to develop. Lermontov is the connecting link: he is a writer of the 19th century, but his works remain modern, because they were ahead of their time. Lermontov, according to the narrator-character, stands above Pushkin, he is the forerunner of Tolstoy and Proust, i.e., the literature of modernism that is capable of showing an incomplete world and a contradictory person, to which the central character of the novel aspires. Art in the author’s concept, as exemplified by Lermontov, is an act of self-knowledge necessary for the artist himself, but allowing one to go from observing about oneself to generalizing about human nature. Reading is the cognition of the Other and their way of being, it is approaching to the understanding of reality; reading is also the threshold for creating a text, one’s own way of being, built in dialogue with world literature. Felzen’s article “Lermontov in Russian Literature” (1938) is not development, but a concentrate of novel ideas. In critical discourse, Felzen evaluates Lermontov less categorically: he is equal to Pushkin in the sense of proportion, freedom from politics and religion. Felzen concludes: after the death of Lermontov, Russian literature was not free from the power of political and religious ideas (Gogol, Tyutchev, Tolstoy, Dostoevsky). The author declares no conflicts of interests.

Robotic Ad-hoc Networks Connectivity Maintenance based on RF Signal Strength Mapping

Network connectivity preservation is one of the substantial factors in achieving efficient mobile robot teams' maneuverability. We present a connectivity maintenance method for a robot team's communication. The proposed approach augments the Radio Frequency Mapping Recognition (RFMR) method and the signal strength gradient decent approach for an overall goal to create a Proactive Motion Control Algorithm (PMCA). The PMCA algorithm controls and helps strengthen mobile communicating robots' connectivity in the existent Radio Frequency (RF) obstacles. The RFMR method takes advantage of Hidden Markov Models (HMMs) results, which assist in learning electromagnetic environments depending on measurements of RF signal strength. The classification results of HMM lead the robots to resolve whether to continue the current trajectory for avoiding the obstacle shadow or move back to desirable robust Signal Strength (SS) positions. In both cases, the robot will run the gradient approach to determine the signal change trend and drive the robot toward the strong SS direction for maintaining link connectivity. The PMCA, depending on the results of RFMR and gradient approaches, promises to preserve robots' motion control and link connectivity maintenance.

Miniaturized Circularly Polarized UWB Antenna for Body Centric Communication

A compact body-worn circular polarized textile monopole antenna for wearable applications is reported. The proposed antenna is fabricated on a jean fabric providing flexibility, lightweight, and easy integration into human clothes. The overall size of the proposed antenna is <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$25\times 30\times1.4$ </tex-math></inline-formula> mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> . Circular polarization (CP) is advantageous for on-body communication as it provides features, such as multipath immunity, suppressing interferences, and enables better link connectivity between the sensor nodes. The proposed antenna achieves the CP using an asymmetric stepped L-shaped ground plane and through the incorporation of a cross-shaped stub in the radiator. The single-fed octagonal strip monopole antenna provides good impedance matching over the entire ultrawide frequency range from 3.09 to 11 GHz. Simulation results are in good correlation with the measured results. The axial ratio bandwidth <3 dB is achieved in the frequency range of 3.4–10 GHz. Gain and efficiency obtained are about 2.3-4.4 dBi and 65%–82% at the said frequency range, respectively. Structural deformation is performed to analyze the flexibility of the proposed antenna. The simulated SAR values follow the FCC limit making it most suitable for wearable applications.

Ethics and Law.

Ethics and Law.

ВПЛИВ ГЕРМЕТИЧНОСТІ ДЕГАЗАЦІЙНОГО ГАЗОПРОВОДУ НА ПРИПЛИВИ ПОВІТРЯ І КОНЦЕНТРАЦІЮ МЕТАНУ

concentrations in the vacuum degassing gas pipeline. Methods. Analytical dependencies for determining the absolute pressure, volume flow rate and temperature of the gas mixture in link of degassing gas pipeline and an empirical dependence for determining the volume flow rate of air in the inflows coming through the flange connections of the gas pipeline links were used in the studies. Results. With these assumptions in mind, the formula for determining the gap in the flange joint of the degassing gas pipeline links has been obtained. The results of calculating air inflows and methane concentrations along the length of the horizontal section of the degassing gas pipeline have been presented. Analysis of the results showed that air inflows through the flange joints of the degassing gas pipeline links increase in the direction of the gas mixture flow, while the methane concentration, on the contrary, decreases. In this case, the increase in air inflows is due to an increase in vacuum in the degassing gas pipeline, while the decrease in methane concentration is due to an increase in the volume flow of the gas mixture. Based on the analysis of the methane concentration character of change along the length of the horizontal section of the degassing gas pipeline, the distance from the beginning of the pipeline where the methane concentration value becomes below the permissible value and the probability of ignition of the gas mixture arises. It has been established that methane concentration varies insignificantly along the length of the gas pipeline at normative airflows. Scientific novelty. A formula is derived for determining the size of the gap between the flat rubber gasket and a shoulder of a flange connection of the degassing gas line links, at which the total air inflows in the gas line coincide with the standard value. Practical significance. The determination of the size flange joint clearance of the degassing gas pipeline links makes it possible to calculate the air inflows and assess the tightness of the gas pipeline flange joints on the basis of measurements of the gas mixture volume flow rate, methane concentration and the depression value.