bluuebunny/crossref_metadata_2025 huggingface dataset:
Socio-economic sustainability approaches applied within the conservation strategies of the historical city of Jeddah “The case study of Al-Balad”
Authors: Bamuqabel T. , Golkarian Sh.
Published: September 2023

Sustainability has gained significant attention in recent years due to the critical circumstances of global crises. The historical city of Al-Balad has been the center of attention given to the conservation field aiming to preserve the city's identity while considering its historical role, unique buildings, the past of the city, and its people. Socio-economic sustainability in conserving the old district of Al-Balad is achieved through multiple strategies including the economic opportunities offered for the locals in terms of business development, as well as attracting tourists, increasing property value, and adaptive reuse. The aim of the research is to detail the socio-economic heritage preservation techniques and analyze the efforts made by the Saudi government and civil organizations to create a series of recommendations based on the recent research and literature review to evaluate its effectiveness in protection. The research methodology used is a qualitative approach, with field visits to take a closer look at current activities and progress in the field, as well as peer literature reviews and official sources. The findings of the research show a development in the social and economic aspects of the community as a result of the efforts related to the conservation of the heritage place.
Project based STEM activities as an effective educational technology in the context of blended learning
Authors: Zavalevskyi Yurii , Khokhlina Olena , Gorbenko Svitlana , Fliarkovska Olha , Chupryna Olga
Published: September 2023

The study aims to investigate the implementation of project-based STEM activities within a blended learning framework in higher education. This approach encourages students' independent creativity and prepares them for contemporary work environments. STEM education is positioned as a tool to develop key competencies like multicultural understanding, linguistic skills, and adaptability. This innovative educational method emphasizes the real-world application of scientific, mathematical, technical, and engineering knowledge. The research methodology combines theoretical analysis with practical evaluation. Key findings underscore the significance of independent research, interdisciplinary integration, and skill development in a blended learning environment. A notable outcome emphasizes empowering students to craft scalable business models, such as startups, vital for success in today's world.
Structure and semantics of verbal means of expressing states of emotional tension in english publicistic texts
Authors: Slipetska Vira , Bortun Karina , Zhylin Mykhailo , Horlachova Viktoriia , Kosharnyi Kostiantyn
Published: September 2023

The aim of the research is to contribute to a deeper understanding of the role and functioning of verbal means of expressing emotional tension in journalistic texts. Methods. The research involves such methods as comparative analysis, transformational analysis, contextual analysis, pragma-semantic analysis. Statistical processing and validation of the obtained data was carried out using Cronbach’s alpha and mean square. Results. The results of the study helped to identify the linguistic features of expressing states of emotional tension. A total of 272 interjections that reflect emotional stress were found in the studied corpus. In general, 589 contexts of the use of modal words, which have the colouring of emotional tension, were also analysed. Conclusions. The study found that emotional stress in journalistic texts is strongly dependent on the context in which it is used. Understanding emotional expressions requires taking into account the sociocultural context, the goals of communication, and the relationship between communicators. Prospects. Further research can expand the scope and diversity of the corpus of journalistic texts, which will enable obtaining more representative results. Adding different genres, time periods, and authors will give a more complete picture of the verbal means of expressing emotional tension.
The evolution of 'Nation' concept and its relevance for contemporary historical moment
Authors: Stovpets Oleksandr , Borinshtein Yevhen , Rubskyi Viacheslav , Shpachynskyi Ihor , Soloviova Iryna , Kozlenko Pavlo
Published: September 2023

Understanding the evolution of the concept of "nation" is crucial in comprehending the shifting dynamics of identity, national policy, and global interactions. By tracing the historical development of this concept, from its early origins to its contemporary manifestations, the article aims to shed light on how the idea of the Nation has transformed and adapted to social, political, and ideological changes. The retrospective analysis of 'national' discourse makes possible to demonstrate how the Nation concept expanded its content during the recent centuries. The philosophical and historical study of the Nation provided in the article, and its research from the functional and axiological standpoints, drives us to make a few general assumptions: Nation still can be that kind of mobilizing force that helps unite people in resistance to external aggression; the concept of Nation presumably does not have enough resources to influence the highly developed countries, but still preserves its potential to transform the societies in the developing countries. Some findings and insights presented in this article may contribute into further theoretical research, as well as policy development, and a deeper understanding of the role of nations in an increasingly interconnected world.
Discourse of disease in Lesia Ukrainka’s epistolary
Authors: Horbolis Larysa , Kobylko Nataliia , Rudenko Svitlana , Veretiuk Tetiana , Antonovych Svitlana
Published: September 2023

The article deals with peculiarities of a writer’s experience of long-term illness, the influence of the disease on rhythm, lifestyle and creativity, based on Lesia Ukrainka’s letters of 1883-1913 to relatives, friends, acquaintances, artists, and public figures. It is found out that the internal picture of the disease has been reflected in the letters with the help of the system of writer’s diverse experience, feelings, and emotions. According to the epistolary, Lesia Ukrainka perceived the disease as a yoke, captivity, which prevented her from being proactive, from taking an active part in cultural, artistic, publishing and translation activities. At the same time, the disease built up a discipline, purposefulness of the writer, who worked hard at her educational and intellectual level, in such way cognized her capabilities, outlining the prospects of creativity. The article reveals peculiarities of the disease, changes in the writer’s well-being, focuses on creativity as an active resistance to the disease, as a way of achieving self-esteem. The culture of work and rest, attention to the sick body, her scrupulosity in the performance of medical procedures contributed to the creation of acceptable conditions for creative work, which performed a therapeutic function in the life of the writer.
Research on the brand image of "study in China" in the new era of overseas chinese newspapers and periodicals: a case study of Sin Chew daily in Malaysia
Authors: Yu Zhou
Published: September 2023

This study focuses on Malaysia's Sin Chew Daily newspaper as its research subject. By searching the electronic resource library of the Sin Chew Daily's headquarters, the study obtained relevant reports and comments on "Study in China" from 2013 to the present. The study employed a combination of quantitative and qualitative methods, including data collection, topic classification, text interpretation, and comprehensive analysis to deeply analyze the focus of the Malaysian Chinese society (referred to as "Chinese society") on "Study in China" and the information it implies. The research found that the attitude of the Malaysian Chinese society towards "Study in China" is mostly positive. "Study in China" is seen as a bright and promising opportunity, and the "Study in China" brand is viewed as positive and reliable. Based on these findings, the study puts forward suggestions for improving the "Study in China" brand with the aim of promoting its connotative development and sustainable growth.
The four-hand ensembles by Ludwig van Beethoven: search and gain
Authors: Misitova Adilya , Sediuk Ihor , Kopeliuk Oleh , Cherednychenko Olga , Pidporinova Kateryna
Published: September 2023

The original four-hand ensembles by L. Beethoven have not received the proper attention of scientists. The aim of the study is to evaluate the composer’s gain from the standpoint of the searches for new sonority and timbre variety. This approach reveals the process of the mutual influence of the two-hand and four-hand compositions in his piano heritage. The main method was musical analysis, using which Beethoven's notes and scores were examined, and their structure was investigated on the basis of analysis and synthesis. The principles of abstraction, specification and generalization are also used. The result is the semantization of the developed techniques, the modelling of various figurative-playing situations in the march genre, the variety of characteristic means as the ways of varying song melodies, the combination in the variation cycle of the features of amateur music-making and concert style. In conclusions it is shown, that assimilation of the experience accumulated in the four-hand literature and new capabilities of the instrument laid the foundation for a new type of composer thinking. As the example Variations on the Theme of Beethoven for two pianos by C. Saint-Saens are considered.
Avaliação do rastreamento do câncer de mama no Brasil
Authors: De Souza Natália Claudino , Martins Camila Marinelli , Muller Erildo Vicente
Published: September 2023

No Brasil, para 2023, estima-se 73.610 novos casos de câncer de mama. Sendo a principal neoplasia nas mulheres, com importante magnitude devido as taxas incidência e mortalidade. OAv objetivo do estudo foi avaliar o rastreamento de câncer de mama, bem como perfil sociodemográfico das mulheres que realizam o exame de mamografia. A partir de dados coletados na Pesquisa Nacional de Saúde 2019, foi calculada a proporção de mulheres, entre 40 e 69 anos, que fizeram ou não o exame de mamografia no Brasil até 2019. Utilizou-se o teste qui quadrado para avaliar a associação entre a realização de mamografia e as demais variáveis de estudo. As mulheres que deixam de realizar o exame de têm como características: ser do Norte ou Nordeste (77,6% e 72,9%), idade entre 40 e 44 anos (79,9%), negras (71,9%), menor grau de escolaridade (76,7%), sem plano de saúde (73,3%), peso normal (36%), tabagistas e etilistas 43,9% e 36,6%, respectivamente. Além disso, também, menstruaram após os 12 anos (34,4%), nunca utilizaram pílula anticoncepcional e contraceptivo injetável (70,7 e 70,1, respectivamente) e já utilizaram TRH (78,3%). Conclui-se que fatores sociodemográficos e de hábitos de vida impactam diretamente no acesso ao exame e conhecimento sobre sua importância no diagnóstico precoce do câncer de mama no Brasil.
Analysis of disk working bodies of forest soil-cultivating implements
Authors: Malyukov Sergey , Lysych Mikhail , Bukhtoyarov Leonid , Pozdnyakov Evgeniy , Gnusov Maksim , Shavkov Mikhail , Petkov Aleksandr
Published: September 2023

The designs of disk working bodies are analyzed and a variant of the developed combined tillage tool is presented. One of the main active working bodies is disc working bodies, which are mounted on various forestry and agricultural machinery: plows, seeders, harrows, etc. and are intended for processing forest areas during reforestation. Disk working bodies are classified, which are divided by type, purpose and design. Due to the fact that forest soils are flooded with roots, stumps, stones, and when carrying out reforestation work they need high-quality preparation, it is required to increase the number of passes through the cultivated territory. Disc working bodies from the moment of their creation continue to undergo improvements aimed at increasing efficiency, increasing strength characteristics, etc. Disc working bodies represented a wide range of design features, but in the subsequent range was concentrated on reducing traction resistance. A change in the design in the process of studying the working body led to the creation of cutouts of various geometric sizes, one of the positive characteristics was a decrease in the traction force required for cutting, crumbling the soil, as well as an increase in quality characteristics.
Noncommutative Quantum Gravity and Dark Matter
Authors: Lee Gang
Published: September 2023

According to the theory of noncommutative quantum gravity[1][2], we calculate the self-interaction of gravitons in momentum space. It shows that the self-interaction of gravitons makes the gravitational field deviate from the inverse square law. By calculating the metric, it can be obtained that the stronger the gravitational source, the stronger the energy momentum of the excited gravitons, and the stronger the gravitational effect produced by the self-interaction of gravitons. Maybe be it can be used to explain dark matter and the Pioneer anomaly.
RECONFIGURABLE RIS SMART SURFACES: PROSPECTS FOR NEXT-GENERATION ACCESS NETWORKS
Authors: Горчаков А.П. , Константинова А.А. , Пальцин Д.А. , Рыжков А.В. , Фень А.С. , Шалагинов А.В. , Шварц М.Л.
Published: September 2023

Рассмотрена технология реконфигурируемых интеллектуальных поверхностей RIS (Reconfigurable Intelligent Surfaces) как одно из наиболее перспективных направлений развития сетей доступа нового поколения 5GA/6G. Показаны её преимущества и возможности практического применения RIS поверхностей.

This article discusses the technology of Reconfigurable Intelligent Surfaces (RIS) as one of the most promising areas for the development of new generation access networks 5GA/6G. The advantages and the possibilities of practical application of such surfaces are shown.
EVOLUTION OF TELECOMMUNICATION SYSTEMS FOR INDUSTRIAL COMMUNICATION
Authors: Ермаков А.В.
Published: September 2023

Анализируются направления эволюции телекоммуникационных систем, используемых для организации производственной связи. Формулируются принципы создания и модернизации телекоммуникационной системы для высокотехнологичной компании. Такая система рассматривается как универсальная модель для долгосрочного развития производственной связи в целом. Предлагаются направления дальнейших исследований, увязанные с процессами эволюции сети связи общего пользования.

The directions of the evolution of telecommunication systems used for the organization of industrial communication are analyzed. The principles of creating and upgrading telecommunication system for hi-tech company are formulated. Such a system is viewed as a universal model for the long-term development of production communication in general. The directions of further research connected with the processes of evolution of public communication networks are suggested.
Pengaruh Faktor Sosial Ekonomi terhadap Pendapatan Usahatani Kopi Arabika di Desa Kendenan Kecamatan Baraka Kabupaten Enrekang
Authors: Lutfiah Nalaratih Uswa , Mardiyati Sri , Saleh Muh Ikmal
Published: September 2023

The aim of this study was to determine the production and income of Arabica coffee farming, to analyze the factors that influence the production of Arabica coffee farming, to determine the effect of socio-economic factors on Arabica coffee farming income in Kendenan Village, Baraka District, Enrekang Regency. The population in this study were 120 people and 25% were taken. The sample was determined using simple random sampling technique. The samples obtained were 30 people. The data analysis used is income analysis and multiple linear regression. The results showed that the production of arabica coffee farming was 498.5 kg per hectare and the income of arabica coffee farming was IDR 9,122,887.50 per hectare. Factors that influence the production of Arabica coffee farming simultaneously are the area of land, the amount of fertilizer, labor, farming experience and the length of time they have attended formal education. Factors that significantly influence the production of Arabica coffee farming are land area and number of workers. Socio-economic factors that significantly influence the income of Arabica coffee farming are land area, labor wages and farming experience. 1. if the land area is increased by 1% (one percent), the income of Arabica coffee farming will increase by 1.6989 percent. Labor wages have a negative and significant effect on Arabica coffee farming income, meaning that if labor wages increase by 1 percent, Arabica coffee farming income will decrease by -0.87908. Farming experience has a positive and significant effect on Arabica coffee farming income, meaning that if farming experience increases by 1% (one percent), then Arabica coffee farming income will increase by 0.1974 percent.
Analisis Peran Sektor Pertanian dan Sektor Industri terhadap Kesejahteraan Masyarakat Melalui Pertumbuhan Ekonomi PDRB di Provinsi Banten
Authors: Faisal Moch , Nugraha Achmad Tjachja , Aminudin Iwan
Published: September 2023

The role of the agricultural and industrial sectors on community welfare through the economic growth of GRDP in Banten Province. This study intends to examine the state of economic growth in Banten Province, analyzing the role of the agricultural sector and the industrial sector on economic growth and community welfare. This data was obtained from the Central Bureau of Statistics of Banten Province in 2001-2021. The analysis method used is path analysis using SPSS for Windows version 16. The results showed that the direct role of the agricultural sector, the industrial sector and the economic organization of GRDP played an insignificant role in the welfare of the people of Banten Province, while the indirect role of the industrial sector had a positive and significant effect on the economic growth of GRDP in Banten Province.
Nilai Ekonomi Pendayagunaan Konsumtif Kayu Bakar Yang Dimanfaatkan Oleh Masyarakat Sekitar Hutan Lindung Di Gunung Rakutak
Authors: Luth Fahriza , Purwanto Asep , Nurwindayani Nurwindayani
Published: September 2023

Firewood is one of forest products which is often used by local people in Mount Rakutak. Firewood has important role in their life. This research is conducted to find out the amount of firewood used in each family in every day and the economic value that it has when it is used by the people in the forest area. The research is located in Resmi Tingal village and Sukarame village and the research uses survey method and the respondents are local farmers who use firewood in the forest area. The result shows that the amount of firewood used by the people is 70.26 m3. and the economic value used by the people in two villages is Rp. 453.126.087 each month or Rp. 386.957 each month for each family.
THE QUALITY IMPROVEMENT OF PUBLIC SERVICE AT THE KAMBITIN VILLAGE OFFICE BASED ON GENERAL PRINCIPLES OF GOOD GOVERNANCE IN ADMINISTRATIVE LAW
Authors: Valisa Cut
Published: September 2023

ABSTRACT
 In an effort to improve the quality of public services at the Kambitin Village office based on one the principles contained in the general principles of good governance (AAUPB) in state administration law, the village government, in this case the village apparatus, must also be able to realize the performance of public services in accordance with what is expected by the community. The purpose of this research is to identify and analyze the efforts of the village government in improving the quality of public services, along with identifying whether the Village Officials at the Kambitin Village Office have understood the importance of the general principles of good governance (AAUPB) in providing public services to village communities. Types and approaches using qualitative research are carried out by collecting words or sentences from individuals, books, and other sources. therefore, this qualitative research uses interview technique namely 5 (five) informants as a method of data collection. Data analysis techniques use interactive models (Miles & Huberman). The results of the study show that the performance of the village government in the delivery of public services has been carried out properly and is in accordance with the applicable laws and regulations. However, regarding the implementation of a community satisfaction survey for services at the Kambitin Village office, a community satisfaction survey has never been carried out either by village officials or from related survey agencies or institutions. The implications of this study indicate that efforts to improve the quality of public services have a very important role in order to achieve the goal of better service quality.
Application of Decision-Making Trial Evaluation and Analytical Network Process to Fruit Bag in Service Design
Authors: Lin Hsin-Hung , Wei Jui-Jung
Published: September 2023

We explored the causal relationship and importance of evaluation factors to purchasing decisions taking the service design of Kiwi bag design for consumers as the research object and using decision-making trial evaluation (DEMATEL). The three most important key evaluation factors before purchasing Kiwi bags were found to be “beauty”, “operability” and “durability”. “Beauty” was the influencing factor while “operability” was the main factor. It is recommended to consider these factors to design bags and to investigate possible directions for the evaluation. In the modeling process, it is necessary to quantitatively evaluate simple factors chosen from complex interacting factors and use the results to determine future designs.
Analysis of Taiwan Calligraphy Design and Experience by the Delphi Method
Authors: Chen Yen-Chang , Huang Chieh-Ju , Lee Lai-Chung , Huang Yi-Ting
Published: September 2023

The handwriting on the street is Taiwanese folk art and represents the life of Taiwanese people. As the actual needs of people, it is also derived from the practical functions of people’s daily life. The materials, processing techniques, and styles in the artworks describe the lifestyle and culture, and even the life attitude and life needs metaphorically. In this research, an open website platform, “Taiwan Calligraphy and Painting”, was built and used for more than one year. This platform allowed users to upload handwritten characters or hand-painted murals from alleys and streets to it, and all these artworks were commented on and annotated. The location from Google Maps was integrated into this platform, so the users understood where the artworks were found. Nearly 1,000 pieces of artwork were categorized for 6 different features “food, clothing, housing, transportation, education, and others”. We used Delphi Method to explore the media and carriers of the handwriting from the streets. 64 scholars and experts participated in the questionnaire survey. The reliability of the first-round survey was evaluated to be high. The second round survey was organized based on the first round one with a Likert five-point scale. These questions of the questionnaire were modified by the values of the InterQuartile Range. The handwriting culture represents the common people in Taiwan as cultural and creative products. The result of this research and the platform provided the foundation for further study to understand the Taiwan handwriting from people’s point of view more in detail.
Vapor phase deposition of lead-free halide perovskite alloy CsSn1−x
Zn
x
Br3
Authors: Jung Hanbo , Liu Zihao , Sotome Masato , Kondo Takashi
Published: September 2023

We have investigated vapor phase deposition of lead-free all-inorganic perovskite CsSn1−x
Zn
x
Br3 thin films (x = 0, 0.01, 0.02, 0.04, 0.10, 0.20 and 1.00) by co-evaporation of CsBr, SnBr2, and ZnBr2. We found that zinc ions can be incorporated into the perovskite lattice by substitution of up to 4% tin ions. Incorporation of zinc ions narrowed the band gap and suppressed oxidation of Sn2+. The deposited CsSn1−x
Zn
x
Br3 polycrystalline thin films were of better quality compared to pure CsSnBr3, showing improved morphologies with fewer pinholes and larger grains. These properties of CsSn1−x
Zn
x
Br3 will lead to the realization of efficient and stable lead-free perovskite solar cells.
Epitaxial α-Ta (110) film on a-plane sapphire substrate for superconducting qubits on wafer scale
Authors: Zhou Boyi , Yang Lina , Wang Tao , Wang Yu , Ding Zengqian , Wu Yanfu , Xiong Kanglin , Feng Jiagui
Published: September 2023

Realization of practical superconducting quantum computing requires many qubits of long coherence time. Compared to the commonly used Ta deposited on c-plane sapphire, which occasionally form α-Ta (111) grains and β-tantalum grains, high quality Ta (110) film can grow epitaxial on a-plane sapphire because of the atomic relationships at the interface. Well-ordered α
-Ta (110) film on wafer-scale a-plane sapphire has been prepared. The film exhibits high residual resistance ratio. Transmon qubits fabricated using these film shows relaxation times exceeding 150 μs. The results suggest Ta film on a-plane sapphire is a promising choice for long coherence time qubit on wafer scale.
Extension of Maxwell’s Equations for Determination of Relativistic Electric and Magnetic Field
Authors:   Department of Physics, Tri-Chandra Multiple Campus, Tribhuvan University, Kathmandu, Nepal., Khadka Chandra Bahadur
Published: September 2023

This paper presents the transformation of four Maxwell’s equation into relativistic electromagnetism via the partial differential equation of electric and magnetic field with respect to spatial and temporal coordinates. The relativistic form of magnetic field is developed based on Gauss’s law for magnetism and Ampere’s law while the relativistic form of electric field is developed based on Gauss’s law for electricity and Faraday’s law, where and are rest magnetic and electric field. We can easily explain theoretically about the various properties of electromagnetic waves (EM waves) with help of this relativistic formula such as; 1) Why EM waves are not deflected by electric and magnetic field as they have both oscillating electric and magnetic field? ;2) why can’t light travel faster than the speed of light? In this highly interesting topic, the particular purpose is not to enter into the merits of existing theory of relativistic electromagnetism, but rather to present a succinct and carefully reasoned account of new aspect of Maxwell’s equation which properly describe the relativistic nature of magnetic and electric Field.
Potential of Pineapple (Ananas comocus (L.) Merr.) Flesh as a Laxative in Mice (Mus muscullus)
Authors: Edi Kamal Sainal , Saharuddin Muhammad , Jumrah Jumrah
Published: September 2023

The pineapple plant, Ananas comocus (L) Merr, has growing shoots at the base that grow into a midrib. The sword-like leaves are strong and substantial. For defecation, the bromelin enzyme, which is contained in pineapples, is frequently used as a laxative (constipation). The purpose of this study was to ascertain the laxative effects of pineapple flesh (Ananas comocus (L) Merr.) extract and the dosages at which it was effective. The Pharmacology Laboratory, Faculty of Mathematics and Natural Sciences, Pancasakti University, used an experimental study design. In this investigation, 25 mice were employed, split into 5 groups, starved for 1 hour, and then given loperamide to induce behavior. Na. CMC was used as a negative control in the first group, pineapple flesh extract was utilized in the second, third, and fourth groups at doses of 100 mg, 300 mg, and 500 mg, and dulcolactol was used as a positive control in the third and fifth groups. The Kruskal-Wallis test was used to examine the study's data and findings. According to the study's findings, pineapple flesh extract has a laxative effect. A dose of 500 mg is the laxative that works the best, with an average 2,1
FPGA based Artificial Neural Network Processor for Detection of Epileptic Seizure
Authors: Balivada Yashwant Kumar , KUMAR ABHASH , Sameer Mustafa , ghosh sanchita , Gupta Bharat
Published: September 2023

The design of an FPGA based portable seizure detection system for epilepsy patients is presented in this paper. For complete hardware support, an FPGA based epilepsy detection system exploiting Artificial Neural Network (ANN) based classifier with on chip training and testing support have been presented in this paper. With the help of such Neural Network processor, the prevailing problems in software like latency can be overcome and, also one can proceed towards an ASIC design of such system which is in high demand in recent days in the field of neuromorphic computing. The proposed hardware design takes the epileptic seizure characteristics namely—mean, variance, skewness, and, kurtosis as the input vectors to the ANN model and generates the classification output similar to traditional software system but now with complete and isolated hardware support. The total framework which incorporates both training and testing has been designed using Verilog HDL on Xilinx Vivado software. The objective development board chosen for epileptic seizure detection implementation and testing was Xilinx Zedboard. The various seizure groups namely— (SZ, SO, SN, SF, S-ZO, S-NF, ZO-NF, S-ZONF) which are taken from 4 unique frequency based groups which are Alpha, Beta, Delta, Theta accomplishing an accuracy ranging from 70% to 90% for different models. Previously, hardware support had already been presented through software hardware co-design approach, where software based training were accompanied by hardware based testing on FPGA. But, the problem with this approach is that it needs repetitive tuning of weights on software to learn patterns on different datasets and then have to store it on hardware for testing/inference work. So, we troubleshooted this problem by our novel work where our proposed FPGA ANN architecture lessens this intricacy incredibly as hardware can train and test on FPGA itself without the need of external software assistance. 
Nonlinear Networked Predictive Control for Unmanned Ground Vehicles
Authors: Khan Subhan , Li Yonghui , Guivant Jose , Niyato Dusit , Li Xuesong , Liu Wanchun
Published: September 2023

In this paper, we explore the application of nonlinear networked predictive control (NNPC) to the unmanned ground vehicle (UGV) that experiences skid-slip, static and moving obstacles, and communication delays in both sensor-to-controller (SC) and controller-to-actuator (CA) channels. Our approach utilizes adaptive dynamic programming (ADP) based model predictive control (MPC) and introduces a delay compensation strategy, effectively mitigating the impact of communication delays on control performance. Specifically, our proposed method generates a control sequence that accounts for delayed control inputs and transmits it to the actuator when the controller node receives a new state measurement. To ensure robustness, our method explicitly considers the presence of collision avoidance and skid-slip and employs an ADP process to develop the control law, which receives state estimation from the Extended Kalman filter (EKF). By integrating these elements, our approach provides an effective and reliable solution for the path-tracking control of the UGV in the presence of communication delays and external disturbances. Finally, comprehensive simulations are performed on a large map and traditional circular trajectory to test and validate the performance of the proposed control scheme.
Surface Susceptibility Synthesis of Spatially Dispersive Metasurfaces for Space Compression and Spatial Signal Processing
Authors: dugan jordan , Smy Tom J. , Monticone Francesco , Gupta Shulabh
Published: September 2023

An analytical method is proposed to synthesize the angle-dependent surface susceptibilities, χ of spatially dispersive or non-local zero-thickness metasurfaces. The proposed method is based on the extended Generalized Sheet Transition Conditions (GSTCs), whereby spatially dispersive metasurfaces are modeled using angle-dependent surface susceptibilities that take the form of rational polynomial functions of the transverse wave-vector, k∥. The suggested method derives the rational polynomial form of χ(k∥), which can then be expressed in the space-domain using spatial derivatives of the fields, resulting in a corresponding higher-order spatial boundary condition to achieve the desired field operation. The proposed synthesis method is illustrated using variety of examples such as, a space-plate, spatial filters and field absorbers, which are then validated using an Integral Equation (IE) solver, in which the corresponding higher-order boundary conditions are integrated to predict the scattered fields. The proposed method thus not only represents a simple way to synthesize ideal zero-thickness metasurfaces, but helps establishes a way to define fundamental operational limits of spatially dis- persive metasurfaces. This is illustrated by considering the space- plate example, and deriving the fundamental trade-off between operation bandwidth and the achievable space-compression. 
Iterative Detection Schemes for Uplink Highly Loaded User-Centric Cell-Free Hybrid Beamforming Based Massive MIMO Networks
Authors: Karataş Metehan , Güvensen Gökhan Muzaffer
Published: September 2023

In cell-free (CF) networks, access points (APs) jointly serve the user equipments (UEs). In user-centric (UC) variant, only a handful of APs serve a particular UE, namely the ones with the best channels. In this paper, we propose a hybrid beamforming uplink receiver scheme for highly loaded UC massive MIMO (mMIMO) networks, operating in millimeter-wave(mmWave) frequencies, employing single carrier modulation under frequency selective channels. Every AP employs its own analog beamformer (AB) called the modified eigen-beamformer (MEB), which promotes a trend of fairness. In the digital domain, two detectors are proposed; Cell-Free Iterative Detector (CFI-D) and User-Centric Iterative Subset-Detector (UCIS-D). CFI-D introduces the iterative block decision feedback equalization (IB-DFE) method for CF networks. UCIS-D is an alternative to CFI-D. UCIS-D is UC, has low computational complexity (CCP) and is scalable. UCIS-D relies on parallel interference cancellation (PIC) aided IB-DFE. Interfering UEs are divided into three sets. Weak interferers are processed with PIC, strong interferers with IB-DFE which considers the residual interference from PIC. Weakest interferers are ignored. Both PIC and IB-DFE utilize the soft decisions from previous iterations. Simulation results show that these receivers can handle ultra high loads in terms of bit-error-rate (BER) and achievable information rate (AIR).
Adaptive Neural Network-Based Sliding Mode Controller For Trajectory Tracking of A Quadrotor UAV
Authors: Dam Quang Truc , Thabet Rihab El Houda , Ali Sofiane Ahmed , Guerin Francois , Tang Yuxuan
Published: September 2023

This paper introduces a novel adaptive neural network-based sliding mode controller for trajectory tracking of a quadrotor UAV under unknown parameters such as inertia and mass. Unknown external disturbances and nonlinear aerodynamic forces are also considered. Due to its complex dynamics, the quadrotors need a dual controller for outer and inner loop control. For the commercial UAV, the inner loop controller, which ensures the attitude control, is usually assumed to be well developed and unmodifiable. Under this assumption, this paper focuses on the position control of a quadrotor UAV. A new position controller will be then designed and used to compute the appropriate input commands for the attitude controller to achieve the trajectory tracking task. The proposed method combines both Back-Propagation Neural Network (BPNN) scheme and sliding mode control to eliminate the effects of exogenous disturbances and model uncertainties. To illustrate the efficiency of the proposed controller, a comparative analysis is performed with different methods through experimental results.
Using Graph Neural Networks in Reinforcement Learning with application to Monte Carlo simulations in Power System Reliability Analysis
Authors: Solheim Øystein Rognes , Høverstad Boye Annfelt , Korpås Magnus
Published: September 2023

This paper presents a novel method for using Graph Neural Networks in combination with reinforcement learning for power reliability studies. Monte Carlo methods are the backbone of such probabilistic power system reliability analyses. Recent efforts from the authors have shown that it is possible to replace Optimal Power Flow solvers with the policies of deep reinforcement learning agents and obtain significant speedups of Monte Carlo simulations while retaining close to optimal accuracies. However, a limitation of this reinforcement learning approach is that the training of the agent is tightly connected to the specific case being analyzed, and the agent cannot be used as is in new, unseen cases. In this paper, we seek to overcome these issues. First, we represent the state and actions in the power reliability environment by features in a graph, where the adjacency matrix can vary from time step to time step. Second, we train the agent by applying a message passing graph neural network architecture to an integrated variant of an actor-critic algorithm. This implies that the agent can solve the problem independently of the power system grid structure. Third, we show that the agent can solve small extensions of a test case without having seen the new parts of the power system during training. In all of our reliability Monte Carlo simulations using this  graph neural network agent, the simulation time is competitive with that based on optimal power flow, while still retaining close to optimal accuracy.
Uji Validitas dan Reliabilitas Kuesioner Skrining Kaki Diabetik
Authors: Supriyadi Supriyadi , Dewi Novita
Published: September 2023

Ulceration of the foot in diabetes is common and disabling. It frequently leads to leg amputation, and the risk for leg amputation increases 10 to 30 times higher among the general population. 85% of leg amputations are performed due to diabetic foot ulcers, which can affect the quality of life and be potentially life-threatening. Diabetic foot ulcers are preventable by performing foot screening. The study aims to determine the validity and reliability score of diabetic foot screening questionnaires. The study used an observational descriptive design with a cross-sectional approach to the samples of 35 out of 40 populations. Respondents are selected using simple random sampling techniques. The instrument used was the diabetic foot ulcer and blood sugar observation sheet. The data were tested using SPSS 26 using Pearson Product Moment and Cronbach's Alpha test. The majority of respondents were female, the age ratio of the respondents was 65 years, the blood sugar rate was 234 mg/dl, and the ankle-brachial index rate was 1.04. The Pearson Product Moment results showed that the rcounts > rtable (0.334), while the reliability test using Cronbach’s Alpha value is > 0.60. The diabetic foot screening questionnaire is declared valid, reliable, and appropriate to detect the risk of foot ulcers in patients with Type 2 Diabetes Mellitus. There are ten themes of questions: diabetic diet patterns, anti-diabetic medication consumption, monofilament tests, foot pulse, history of foot ulcers, a history of amputations, foot deformities, nails growing into tissue, callus, and cracks.
Pengaruh Pijat Perineum terhadap Laserasi Perineum pada Ibu Bersalin
Authors: S Villa Yulinar , Novelia Shinta , Rukmaini Rumaini
Published: September 2023

Perineal laceration will cause bleeding during delivery, causing maternal death. A stiff perineum is an indication for an episiotomy. The occurrence of a very broad perineum can cause heavy bleeding in the mother during childbirth. Destination this study aims to determine the effect of perineal massage on perineal lacerations in women giving birth between the experimental group and the control group at the Sindang Jaya Public Health Center. This quasi-experimental research uses an Experiment and Control Group design. The population in this study were pregnant women in the third trimester with gestational age <34 weeks. The research instrument consisted of a checklist and a partograph as a measuring tool. Data were analyzed using normality test. Result a P Value of 0.000 (<0.05) meaning that there was a significant difference between lacerations in the experimental group and the control group.Conclusions and recommendation is perineal massage for pregnant womenable to prevent perineal laceration during labor. This perineal massage can be applied in private midwifery practices or carried out by patients themselves at home regardless of parity.
Efektifitas Senam Hipertensi terhadap Tekanan Darah Lansia di Puskesmas Rawat Inap Muaro Kumpeh
Authors: Rahmadhani Dwi Yunita , Efni Nel , Yuliana Yuliana , Yesni Marnila
Published: September 2023

Elderly (elderly), is a process of the final stages of a human life. One of the problems that often occurs in the elderly is hypertension. Hypertension is a condition where the elderly have blood pressure above 14/90 mmHg. One way that can be done to lower blood pressure is hypertension exercise. In Muaro Jambi Regency, based on data from the Muaro Jambi District health office, the health center with the highest number of elderly people with hypertension was the Muara Kumpeh inpatient health center with a total of 2190 cases of hypertension. The purpose of this study was to determine the effect of hypertension exercise on elderly blood pressure at the Muara Kumpeh Inpatient Health Center in 2021. This research is a quantitative study using the pre-experimental method with one group pre-test post-test design. This research was conducted in September 2021 – August 2022 at the Muara Kumpeh Inpatient Health Center. The total population is 2190 people with a sample of 10 people taken by purposive sampling technique. Data collection was done by observing blood pressure before and after the intervention, which was carried out once a week for three weeks. Blood pressure data were analyzed using paired sample t-test with α < 0.05. The results of research conducted at the Muaro Kumpeh Inpatient Health Center found that hypertension exercise had an effect on elderly blood pressure (p-value = 0.000). Where the average systolic blood pressure decreased by 40 mmHg and the average diastolic blood pressure decreased by 20 mmHg. Suggestions that elderly hypertension exercise can be an alternative exercise that can be given to the elderly to lower blood pressure and for further research can add insight to researchers on the relationship between the level of influence of hypertension exercise on elderly blood pressure.
SIMULATION OF AN UNMANNED AIRCRAFT FLIGHT IN MATLAB SIMULINK
Authors:   Moscow Technical University of Communication and Informatics, BELOV N.V. , REPINSKY V.N. ,   Moscow Technical University of Communications and Informatics
Published: September 2023

In this article, a simulation model of an unmanned aerial vehicle in Matlab Simulink has been developed. To build a simulation model, a mathematical description of the equations of motion of an aircraft (AC) is performed: kinematic and dynamic models with six degrees of freedom and twelve state variables, and a mathematical description of external forces acting on the aircraft is also performed. The simulation model includes several blocks that interact with each other to ensure the operation of the unmanned aerial vehicle: the air craft dynamics unit, which is responsible for simulating the movement of the aircraft in three dimensions, the autopilot unit, which simulates the operation of the aircraft navigation system and provides stabilization in the air, the control unit engines, which regulates the speed of rotation of the engines depending on the control signals, an external environment block that simulates the air environment in which the aircraft moves. The main advantage of the constructed model is the ability to change the parameters of the aircraft interactively and evaluate the main parameters using graphs. The correctness of the autopilot operation is confirmed by the graphs of transient processes along the three axes of the aircraft: roll, pitch, yaw. In the future, based on the constructed model, it is possible to create a fully automatic obstacle avoidance system that will allow the unmanned aerial vehicle to safely move from the start to the end point, taking into account all the obstacles in the flight path. Thus, the simulation model of an unmanned aerial vehicle based on Simulink makes it possible to evaluate the operation of the autopilot and other aircraft systems with high accuracy and detail. Its use can be useful in the design and testing of new unmanned aerial vehicles.
DISTRIBUTED REGISTRY OF VEHICLE OPERATING HISTORY BASED ON THE BLOCKCHAIN PLATFORM HYPERLEDGER FABRIC
Authors:   Petersburg University of Aerospace Instrumentations, BEZZATEEV S.V. , YELINA T.N. ,   Petersburg University of Aerospace Instrumentations, KHODYREVS. E.S. ,   Petersburg University of Aerospace Instrumentations
Published: September 2023

Due to the rapid development of various transport platforms, including those using unmanned technologies, systems that provide storage of vehicle operating history throughout its lifecycle are becoming increasingly relevant. Purpose: the purpose and functionality of the developed system for storing such information are defined. The main purpose of the system is to maintain a single source of reliable and unchangeable information about the operating history of the vehicle. Such a system can increase the transparency of business processes that arise between participants in the automotive industry: manufacturers and owners of vehicles, service stations, insurance companies and other industry participants. Methods: Blockchain technology, smart contracts and various methods of transaction processing were used. Results: the system was designed based on a distributed platform, based on the criteria defined in the work, Hyperledger Fabric was chosen as the platform. Communication network and information system architecture were designed and developed based on the distributed registry technology. The paper describes the process of creating the Hyperledger Fabric network, which is supported by the member organizations of the automotive industry. A description of the basic elements of the system is presented, as well as the mechanisms that maintain and harmonize the distributed registry, transaction processing, execution of smart contracts and interaction of the connected system participants. The hardware was designed in the form of a plug-in unit, which implements the functions of collection and pre-preparation of data collected from the nodes, units, sensors of the vehicle, as well as additional sensors built into the hardware unit. The collected data are transmitted from the block to the storages, the maintenance of which is carried out by the system participants interested in such data. The fact of data transfer and data source identifier is recorded in a distributed registry in the form of a transaction, placed in the block. Practical relevance: On the basis of smart contract technology the issues of forming reports on the history of vehicle operation are considered. The system is scalable and allows the deployment of new smart contracts, which provides the ability to create new scenarios for its use. Discussion Possible variants of further development and use of the system are considered: the solution of scaling the system by local zones is proposed, and a brief overview of the approach of dynamic channel definition Hyperledger Fabric using dedicated near-field data communication is presented.