bluuebunny/crossref_metadata_2025 huggingface dataset:
Implementation of the Haversine Formula Method in Geographic Information Systems for Searching the Nearest Sea Freight Expedition Services in East Jakarta
Authors: Efriza Yunardi  , Lena Magdalena  , Mesi Febima
Published: October 2024

In export and import activities, a partner is needed for the shipping process. There are three types of shipping routes available for export and import: land, sea, and air. A company that offers shipping services via sea routes is known as an EMKL. This study designs a Geographic Information System (GIS) to facilitate the search for locations of Marine Cargo Expedition Services (EMKL) in East Jakarta using the Haversine Formula. The main problem faced is the difficulty in finding nearby and relevant expedition service providers in a large and densely populated area like East Jakarta. The proposed solution involves developing a system that integrates location data with the Haversine Formula to accurately calculate the distance between the user's location and the service providers. By using this method, the system can provide precise location information and help users select the nearest expedition service. The goal of this research is to enhance efficiency and accuracy in locating expedition services. The expected outcome is the creation of a user-friendly and effective system that simplifies the process of selecting expedition services by considering distance and service availability in real-time.
Design and Build Running Text Controls Using IoT
Authors: Aji Tyo Syahputra  , Fauzi Achmad , Milli Alfhi Syari
Published: October 2024

This research designs and builds an Internet of Things (IoT)-based running text control system using the P10 display module which can be controlled through the Blynk application and displays the temperature in real-time using the DHT22 sensor. The system consists of hardware such as a microcontroller, Wi-Fi module, P10 LED display, and DHT22 sensor to measure temperature and humidity. The Blynk app is used as a user interface to control the messages displayed on the P10 module and monitor the temperature data in real-time. Software development is carried out to integrate the hardware with the Blynk application and enable efficient data transmission. The test results show that this system is able to accurately display text messages and temperature data with low latency. These systems can be applied in a variety of scenarios such as public information systems, environmental surveillance, and dynamic advertising applications.
Enhancing AES Key Generation Using Diffie-Hellman Method for Image Security
Authors: Sinambela Rifdahtul Ghinaa , Achmad Fauzi  , Husnul Khair
Published: October 2024

The increasing need for secure image transmission has led to the development of cryptographic techniques that combine encryption algorithms and secure key exchange methods. This paper proposes a system for enhancing the security of digital images by using the Advanced Encryption Standard (AES) combined with the Diffie-Hellman method for key generation. AES is applied for encryption and decryption, while Diffie-Hellman ensures the secure exchange and generation of secret keys. The system, developed in Microsoft Visual Basic .NET 2010, was tested on various image formats and demonstrated effective protection against brute force attacks. This approach ensures secure digital image transmission and confidentiality.
Prototype Design IoT Based Air Quality Monitoring Tool for Urban Environment
Authors: Lita Catlya Novera , Pardede A M H , Siswan Syahputra
Published: October 2024

In rapidly urban environments, air quality has become an important issue that affects public health and the environment. This research aims to design and implement a prototype of an IoT-based air quality monitoring device that can be used to monitor air conditions in urban environments. This prototype uses the DHT11 sensor for measuring temperature and humidity, the MQ135 sensor to detect the concentration of air pollutants such as CO, CO2, ALCOHOL, TOLUENE, NH4, and ACETONE, and an OLED LCD for displaying information. This system uses the NodeMCU ESP8266 as a microcontroller that connects devices to the internet and sends data to the Blynk application platform. The Blynk application serves as a user interface that allows for real-time monitoring of the device through a smartphone. With this system, users can obtain real-time air quality data to protect health and the environment in urban areas. The prototype evaluation shows that this system is effective in monitoring and displaying air quality information, as well as providing easy access to data through the Blynk application.
Application of the KARP RABIN Algorithm for Plagiarism Detection System in Thesis Proposal Submission in the Department of Informatics Engineering STMIK Kaputama
Authors: Simanjuntak Ruth Rani , Pardede A M H , Zira Fatmaira
Published: October 2024

Plagiarism is a serious threat, especially to academic honesty, so a detection system that can analyze various types of documents is needed. This research develops a plagiarism detection system using Optical Character Recognition (OCR) to convert image text into digital text. Rabin – Karp algorithm with rolling hash and Dice Coefficient Similarity is applied to measure similarities between documents. Testing is carried out on .doc, .txt, .jpg files. As a result, the system can detect plagiarism well in clear text and image documents, but accuracy can decrease in low-quality images. In conclusion, the similarity of content, sentence structure, and format affects the degree of similarity, while OCR techniques work effectively even though they are limited to low-quality images.
Improving the Quality of Digital Images on Identity Cards Using Contrast Stretching and Retinex Methods
Authors: Salsabilla Nur , Achmad Fauzi  , I Gusti Prahmana
Published: October 2024

Enhancing the image quality of the Indonesian Identity Card is crucial to ensure the clarity and accuracy of information in various applications, such as identity verification, administration, and security. This study aims to improve the digital image quality of Identity Card using the Contrast Stretching and Retinex methods. Contrast Stretching is employed to enhance image contrast, while the Retinex method is used to maintain and improve the clarity of colors and image details. The implementation of these methods is carried out using Python. The test results show that these methods are effective in improving the quality of Identity Card images, making the information on the images clearer and easier to read. This research contributes to the development of more advanced image processing technology, which can be applied to various verification and administrative needs that require high reliability.
Decision Support System for Extracurricular Determination to Increase Student Involvement in Activities Outside the Classroom Using the AHP Method
Authors: Rizky Ramadhan  , Yani Maulita  , Br Sitepu Kristina Annatasia
Published: October 2024

SMK Dharma Pancasila Medan is a private school located at Jl. Dr. T. Mansyur No.71 C Medan, Kel. PB Selayang. Currently, the selection of extracurricular activities at the school relies on a conventional manual system, lacking a formal system to identify the best extracurricular activities among the available options. This study aims to develop a Decision Support System (DSS) using the Analytical Hierarchy Process (AHP) method to evaluate and prioritize extracurricular activities based on four main criteria: achievement, short-distance running, height, and discipline. The system is designed to provide objective and measurable recommendations, facilitating students in choosing the most suitable extracurricular activities to enhance their success in out-of-class activities. The research findings demonstrate that the DSS developed with the AHP method is effective in providing accurate recommendations and increasing student engagement in extracurricular activities. The analysis and assessment process using AHP results in more targeted decisions aligned with the goal of enhancing student involvement. Overall, the system not only aids students in optimal extracurricular selection but also contributes to the development of better extracurricular activity strategies at SMK Dharma Pancasila Medan. This research enriches educational theory and practice by offering practical solutions to the challenges in extracurricular selection and enhances the overall educational experience for students.
Design and Construction of Guest Friendly Robot for Front Office Service on Campus Based on IoT
Authors: Putri Purwani Dea Nanda , Buaton Relita , Milli Alfhi Syari
Published: October 2024

Amid the rapid advancements of the digital era, Internet of Things (IoT) technology has emerged as one of the most significant innovations, enabling electronic devices to connect and interact intelligently. This study aims to design and develop an IoT-based guest reception robot intended for front office services at the campus. The robot is designed as a prototype capable of welcoming guests, saying "welcome," and providing four key pieces of information about the campus. Utilizing components such as ESP32 and ultrasonic sensors, the robot is expected to enhance service efficiency while also offering a more interactive experience for campus visitors. The implementation of IoT in this robot is not only intended to improve visitor services but also to promote technological innovation within the campus environment. This study also explores the integration of hardware and software, as well as the features and functions needed to meet the requirements of front office services. Thus, this research is expected to serve as a foundational step toward creating a more modern and innovative campus.
Design and Build an IoT-Based Shoe Dryer Monitoring and Control System
Authors: Apriandi Alfa Reza Saragih  , Pardede A M H , Simanjuntak Magdalena
Published: October 2024

Wet shoes that are not dried immediately can lead to the growth of bacteria and fungi that can potentially damage the shoes and cause health problems in the user. Therefore, an effective and efficient shoe dryer is needed. This research aims to design and develop a monitoring and control system for shoe dryers based on the Internet of Things (IoT) that can be operated remotely through a web-based application or mobile device. The system consists of several main components, namely humidity and temperature sensors, microcontrollers, wireless communication modules, and heating elements. Humidity and temperature sensors are used to detect the condition of the shoe and the surrounding environment, while the microcontroller is in charge of processing the data and regulating the operation of the heating element as needed. With the wireless communication module, users can monitor and control the drying process in real-time through an application connected to the internet.
A Sustainable Approach to the Comprehensive Analysis of the Nutrient Content and Phytochemical Profile of Industrial Food Waste
Authors: Patel Prachi , Sahoo Susmita
Published: October 2024

This research paper offers a comprehensive analysis of the nutrient content and phytochemical profile of industrial food waste, focusing on key elements including nitrogen, phosphorus, potassium, carbon, and hydrogen, as well as bioactive compounds. The study involves the characterization of various types of food waste streams to elucidate their nutritional composition and bioactive compound content. Analytical techniques such as NPK analysis, carbon and hydrogen analysis, and phytochemical qualitative analysis are employed to quantify and identify the presence of essential nutrients and bioactive compounds in the waste excrement materials. Additionally, present paper explores the potential value-added opportunities through product development using extracted bioactive compounds. Perspectives from recent research that advance knowledge of industrial food waste as a valuable resource for nutrient recovery and bioactive compound extraction, thereby fostering sustainable food waste management practices and promoting the development of value-added products for various industries.
Land Use affects the Soil Aggregation Pattern during Restoration of Degraded Land under Tropical Dry Climate
Authors: Tanwar Shikha Singh , Patel Uma , Pandey Ankit , Manpoong Chowlani
Published: October 2024

Soil aggregate formation and stability are crucial in safeguarding soil carbon pools, as they form the basic unit of soil structure in terrestrial ecosystems. The impact of different land uses on soil aggregation pattern has widely been studied but is limited under tropical dry climate conditions. This study aimed to determine the soil aggregation pattern at two soil depths (0-15 cm and 15-30cm) in three different plantations (Peltophorum pterocarpum, Eucalyptus globulus, and Acacia nilotica) established in degraded land under tropical dry climate. The soil aggregates were categorized into microaggregate, mesoaggregate and macroaggregate based on their size fractions which were determined by the wet sieving method. The percent of macroaggregate, mesoaggregate, and microaggregate fractions at 0-15 cm depth ranged from 62.2 – 82.6%, 31.6 – 36.7%, and 1.1 – 4.9 % respectively whereas at 15-30 cm depth, it ranged from 69.7 - 81.7%, 17.1 - 31.6%, and 1.2 - 2.8%. The mean weight diameter values at 0-15 cm and 15-30 cm soil depth ranged from 2.27-3.37mm and 2.85-3.35 mm respectively. The higher percentage of macroaggregate fractions in Peltophorum pterocarpum plantation compared to Eucalyptus globulus, and Acacia nilotica plantations indicated that the Peltophorum pterocarpum plantation has slightly more potential to improve aggregate formation and soil structure in the degraded lands under tropical dry climate. In addition, appropriate land use practices can increase soil aggregate stability in the study area.
Moving together or drifting apart?
Authors:   Nordregio, Tapia Carlos , Dzhavatova Kamila , Norlén Gustaf , Chilvers Myriam , Lundgren Anna , Sánchez Gassen Nora
Published: October 2024

This working paper analyses the territorial differences in household wealth across the Nordic Region. It examines the distribution and development of income inequality across the Nordics between 2005 and 2022, focusing especially on disparities at the municipal level and offers insights into the complex dynamics of income inequality in the Nordic Region.
Predictors for thyroid dysfunction after discontinuation of levothyroxine in children and adolescents with Hashimoto thyroiditis
Authors: Kim Min Jee , Lee Yun Jeong , Choe Yunsoo , Shin Choong Ho , Lee Young Ah
Published: October 2024

Purpose: Few data on the clinical course after levothyroxine (L-T4) discontinuation in pediatric patients with Hashimoto thyroiditis (HT) are available. We investigated outcomes and predictors for successful withdrawal from L-T4 among children with HT.Methods: Among 168 patients diagnosed with HT between January 2000 and March 2021 at Seoul National University Children’s Hospital and in whom L-T4 therapy was initiated during childhood, we attempted to discontinue this therapy in 47, 3 boys and 44 girls. L-T4 was restarted when patients developed overt or subclinical hypothyroidism (thyroid-stimulating hormone [TSH] levels≥10 mIU/L) after L-T4 discontinuation.Results: Median age at discontinuation was 15.4 years (12.7–18.4 years) with a median duration of L-T4 therapy of 47 months (20.3–80.3 months). During the median 30 months of follow-up (10.6–61.0 months) after L-T4 discontinuation, 33 (70.2%) developed thyroid dysfunction. Among these patients, 17 were eventually restarted on L-T4. TSH levels over 50 mIU/L at L-T4 initiation (hazard ratio, HR 3.5, P=0.002), age under 12 years at L-T4 discontinuation (HR 11.1, P=0.0001), and TSH levels higher than the upper 50% of normal (above 2.25 mIU/L in the present study) at L-T4 discontinuation (HR 2.7, P=0.014) were significantly predictive for overt hypothyroidism or subclinical hypothyroidism after L-T4 discontinuation. In addition, age under 12 years at L-T4 discontinuation was only predictive factor for restarting L-T4 medication (HR 4.3, P=0.012).Conclusion: L-T4 discontinuation in pediatric patients with HT resulted in thyroid dysfunction in 70.2% of cases; 36.2% of patients who attempted discontinuation required resumption of L-T4. Older age and lower TSH levels at L-T4 discontinuation were advantageous for successful withdrawal.
Comparison of growth hormone stimulation tests in prepubertal children with short stature according to response to growth hormone replacement
Authors: Chang Seong Hwan , Kim Chan Jong
Published: October 2024

Purpose: Growth hormone (GH) stimulation tests are essential tools for diagnosing GH deficiency (GHD). We aimed to compare L-dopa, insulin, and arginine-induced stimulation tests based on response to GH replacement.Methods: We retrospectively collected data from a review of patients who underwent the GH stimulation test. A total of 138 patients diagnosed with idiopathic short stature were categorized into group I. The remaining 135 patients, who were diagnosed with GHD and treated for 1 year, were classified into 2 subgroups: group IIa, consisting of patients with an increase of at least 0.5 in height standard deviation score (SDS), and group IIb, patients with an increase of less than 0.5 in height SDS.Results: At the initial visit, group IIa exhibited significantly lower insulin-like growth factor binding protein-3 (IGF-BP3) and higher body mass index (BMI) SDS compared to the other groups. Following 1 year of treatment, group IIb showed significantly lower height SDS, height SDS gain, growth velocity, predicted adult height SDS, weight SDS, and a higher insulin-like growth factor-1 SDS than group IIa. Bone age and IGF-BP3 were inversely associated, and BMI SDS and IGF-BP3 were positively associated with height SDS gain in GHD patients. The specificity and accuracy rates were 50.3% and 70.3% for the L-dopa-induced stimulation test, 72.3% and 86.6% for the insulin tolerance test (ITT), and 64.7% and 87.2% for the arginine-induced stimulation test (ArST).Conclusion: The ArST demonstrated lower specificity compared to the ITT. However, patients undergoing ArST experienced fewer side effects, suggesting that a careful selection of stimulation tests is crucial in diagnosing GHD.
LEGAL EDUCATION IN INDIA
Authors: Kumar Dr. Sanjeev
Published: October 2024

Legal education plays a crucial role in shaping the future of any country. The legal education imparted in various institutions helps to promote more awareness and civic sense in the citizens of any nation. In India, legal education helped in the proper and just development of Indian society. After the independence of India, various regulatory bodies involved in improving the status of legal education made several reforms, keeping in mind the needs of present stakeholders. In this research paper doctrinal approach is used to gain a proper understanding of current issues and concerns in legal education in India at higher education. The aim of the study is to highlight the importance of legal education in India. Furthermore, it also examines recent legal education reforms in the light of New Education Policy, 2020. Moreover, it also discusses various issues and concerns in legal education in India.
DEMYSTIFYING THE DOCTRINE OF BASIC STRUCTURE
Authors: Sharma Subodhika
Published: October 2024

The doctrine of Basic Structure is a constitutional principle which asserts that certain fundamental features of the Indian Constitution cannot be amended by the Indian Parliament, even if the amendment process provided in the Constitution is followed. This principle has been a subject of much debate and controversy in the legal and political circles of India.
This paper seeks to demystify the doctrine of Basic Structure by providing a comprehensive overview of the judgment delivered in Kesavananda Bharati v. State of Kerala. The paper examines the various elements that constitute the Basic Structure of the Indian Constitution, including the supremacy of the Constitution, the rule of law, democracy, secularism, federalism, and the protection of fundamental rights.
Furthermore, the paper highlights that there was no common ground on the grounds for limitation on the power of amendment between on one hand Chief Justice Sikri, Justices Shelat, Grover, Hegde, Mukherjea and Reddy and on the other Justice Khanna and that the question “what is the ratio of the Kesavananda judgment?” has never been answered.
Horizontal Reservation for Transgenders:
Authors: Kumari Prachi
Published: October 2024

The constitution of India provides for reservation, which is a form of positive discrimination, created to promote equality among marginalized sections so as to protect them from social and historical injustice. It can be divided into two parts: vertical and horizontal.
The Transgender persons are demanding horizontal reservation. The demand has to do with the need for mandatory provisions for a community that has been historically marginalised in society and recognising the different aspects making up their social identity.
The Transgender Persons (Protection of Rights) Act, 2019 could not do anything regarding reservation and has disappointed the community.
Transgender Community has a strong historical presence in our country. Be it the era of Ramayana or Mahabharata; Transgenders played a pivotal role in society. If we leave aside these epics, the pre- independence era (before the arrival of the British) has testimony of this community’s fairly dignified presence in our society. It was British law, which caused the deterioration of Transgenders.
When we achieved independence, we kind of continued the British legacy of not treating Transgenders as an equal. We did not even recognise their existence. It took us more than six decades to recognise that Transgenders are ‘third gender’ and their existence should be accepted in the society. These six decades of non- recognition made them backward. In my opinion, the SC is right in declaring them as socially and educationally backward classes of citizens and extending all kinds of reservation in cases of admission in educational institutions and for public appointments.
DIREITO À MORTE DIGNA E O STATUS LEGAL DA EUTANÁSIA NO BRASIL
Authors: BRAUER TEIXEIRA HANNA
Published: October 2024

A pesquisa aborda a relação entre o direito à vida digna e o direito à morte digna no contexto do Estado Democrático de Direito Brasileiro, onde as normas constitucionais, especialmente a garantia da dignidade da pessoa humana, representam o cerne do ordenamento jurídico. Partindo do pressuposto de que a dignidade humana é o princípio central do sistema jurídico, a pesquisa analisa como o direito à vida digna se relaciona com o direito à morte digna, destacando a responsabilidade do Estado em garantir condições dignas de vida desde o nascimento até o término natural da existência. Embora o direito à morte digna não esteja explicitamente previsto na legislação, ele decorre diretamente do direito à vida e da dignidade humana. O estudo também aborda a proibição da eutanásia no Brasil, ressaltando as discussões em torno dessa prática e a possibilidade de sua regulamentação futura. Além disso, são explorados aspectos éticos, morais e jurídicos relacionados à autonomia do paciente e à responsabilidade médica em casos de decisões sobre o fim da vida. Com base em análises doutrinárias e legais, a pesquisa busca contribuir para uma compreensão mais ampla e aprofundada desse tema controverso e complexo, que envolve questões fundamentais de direitos individuais e sociais.
Teachers Efforts in Preventing Bullying Behavior
Authors: Ansori  , Anggraini Fatik Lutviana
Published: October 2024

This study describes the forms and efforts of teachers in preventing bullying behavior in students at Madrasah Ibtida'iyah At-Taqwa Bondowoso. Qualitative methods produce naturalistic data in the form of reasonable explanations. Data from observations, documentation, and interviews were analyzed descriptively. The results of the study indicate that teachers' efforts in preventing bullying behavior have been maximized and are very effective and can prevent and minimize the occurrence of bullying behavior. Schools become more conducive and the learning process can run well. The success of preventing bullying in schools can be seen from the attitudes and behavior of students in everyday life who respect each other, teachers, parents and people around them, do not say bad things, act compactly and dare to take responsibility, and fear Allah by avoiding all things that are forbidden and doing what He commands.
Development of English Board Learning Media to Increase Learning Motivation in English Subjects in Grade 3 of Elementary Madrasah
Authors: Novitaningrum Diah Tri , Alfiyah Hanik Yuni , Sa’diyah Siti Halimatus
Published: October 2024

Students are less motivated to follow the English learning process. The methods and approaches used by teachers are less interesting to students, still centered on the teacher. This study developed English board learning media, and to increase student enthusiasm and make it easier for teachers to transfer knowledge to students. English Board is expected to be fun, interesting, and motivating, and not make students bored when participating in English learning activities. The "English Board" learning media can increase student enthusiasm in learning and provide a pleasant learning experience for students. English Board media uses a research and development model. This study was only conducted in five stages, namely: 1) potential and problem stage, 2) data collection stage, 3) product design stage, 4) product validation stage, and 5) product revision stage. The results of the media validity obtained an average percentage of 89.77%, this result is included in the category of very good or very suitable for use in implementing English learning activities.
El Acto de Inicio y el efectivo derecho a la defensa de los administrados en los Procedimientos Administrativo Sancionadores
Authors: Arroba – Proaño Carlos Alberto , Rengel – Maldonado Paz Piedad
Published: October 2024

Los procedimientos administrativos sancionadores tienen como finalidad determinar la responsabilidad del administrado en el cometimiento de una infracción no penal en cuyo caso, es merecedor de una sanción administrativa cuya finalidad es reprimir las actuaciones de los administrados. Para este fin, la administración pública está obligado a garantizar el derecho de los administrados a que esta sanción o la confirmación del estado de inocencia, sea consecuencia de un procedimiento regulado por el Código Orgánico Administrativo. En esta línea, el Acto de Inicio del procedimiento administrativo sancionador es el instrumento a través del cual, la administración pública da a conocer al administrado el inicio de dicho procedimiento, con la finalidad de garantizar el efectivo derecho a la defensa; por lo que su estructura, contenido y notificación, debe cumplir solemnidades legales de manera que, el administrado conozca de manera cabal el contenido de las imputaciones que se le realizan, de ahí su importancia jurídica frente al derecho a la defensa. En este sentido esta investigación tiene como objetivo realizar un estudio jurídico y doctrinario del acto de inicio y la garantía de derecho a la defensa, determinar sus características y requisitos, así como establecer las consecuencias jurídicas que trae para el procedimiento administrativo sancionador la incorrecta o defectuosa imputación de cargos. Para este efecto, se realiza un estudio analítico sintético al respecto de la naturaleza jurídica del acto de inicio y las características del mismo, así como de las normas que lo regulan.
Soil Test-Based Crop Response Phosphorus Calibration Study on Bread Wheat (Triticum Aestivum L) in Liban Chukala District, East Shewa Zone, Oromia, Ethiopia
Authors: Abera Tilahun , Lema Amante , Firomsa Tilahun , Husen Abdurhman
Published: October 2024

Nutrient mining due to sub-optimal fertilizer use on one hand and unbalanced fertilizer use on the other have favored the emergence of multi-nutrient deficiency in Ethiopian soils. Therefore, the study was conducted on twenty-one farmers’ fields in the Liban Chukala District of East Shewa Zone of Oromia, during the main cropping seasons of 2019-2022. The study aimed to determine the economically optimum rate of nitrogen fertilizer in the first year. However, in the second two consecutive years the experiment was conducted to determine phosphorus critical (Pc) and phosphorus requirement factor (Pf and the treatments consisted of six levels of phosphorus (0, 10, 20, 30, 40, and 50) kg ha-1 combined with a single level of nitrogen (69 kg ha1) that gave a total of seven treatments. The experiments were laid out in randomized complete block design (RCBD) with two replications and the gross plot, size was 4 m x 5 m (20 m2) was used to determine phosphorus critical (Pc) and also harvested from 4m2 plot areas. The analysis of variance indicated that, thousand kernels weight, and harvest index were not significantly (p<0.05) influenced by applied NP fertilizers. On the other hand, the analysis of variance indicated that Plant height, spike length, number of seeds per spike, biomass yield, and grain yield were highly significantly (p <0.01) influenced by soil test-based phosphorus fertilizer application. The result indicated that the highest (87.82 cm) plant height, the highest (1013 kg ha-1) biomass, and the highest (4517 kg ha-1) grain yield were recorded by 40 kg P ha-1. Moreover, 23ppm phosphorus critical (Pc) and 9.86ppm phosphorus requirement factor (Pf) were identified for bread wheat production for the farmers of Liban Chukala District.
Identification of Low-Cost Potting Mixture for Propagation of Betel (Piper Betle L.)
Authors:   Intercropping and Betel Research Station, Dampalassa, Narammala, Sri Lanka, Dissanayaka DMPV
Published: October 2024

Betel (Piper betle L.) is a popular intercrop with coconut in Kurunegala and Gampaha districts, cultivated primarily as a cash crop. Growers often use potted betel plants for transplanting to ensure the selection of high-quality, vigorous plants. The traditional potting mixture for betel includes top soil(TS), sand(S), cattle manure(CM) and coir dust(CD) in equal parts. However, due to the high cost and limited availability of sand and coir dust, using partially burned paddy husk as a substitute is a more economical option. A study was carried to find out the low-cost potting mixture using combination of potting materials. Seven treatments comprised combinations of top soil, sand, cattle manure, coir dust, and partially burned paddy husk (PBPH).. The poly bags were filled with a plotting mixture and three nodal cuttings were planted. A propagator was used to raise the plants for 21 days. Then the small plants were kept in 70% shade. According to the results, the highest root dry weights were observed in T2(TS:CM:S:CD:PBPH 2:1:1:1:3) treatment and T7 (TS:CM:PBPH, 1:1:3)treatments. The highest shoot dry weight was observed in T4 (TS:CM:S:CD:PBPH 2:1:1/2:1:1)treatment. The highest shoot length was observed in T4 treatment. The highest number of leaves was observed in T4 treatment. Therefore treatments, T2 ,T4 and T7 can be recommended for the betel propagation. Cost of a plant in the T2, T4 and T7 treatments were Rs11.5, Rs13.50, Rs 9.30 respectively were lower than the cost of the conventional potting mixture Rs18.00.
TRACKING THE TRAJECTORY OF A UAV BY A SEQUENCE OF FRAMES FROM ITS CAMERA
Authors:   Ulyanovsk State Technical University, Shcherbakov I.Yu. , Tashlinskii A.G. ,   Ulyanovsk State Technical University
Published: October 2024

A method for tracking the trajectory of a UAV is proposed based on the analysis of successive frames from a camera located on this device. When implementing the method, the Shi-Tomasi algorithm for finding reference points, Sobel operators, the Hesse matrix and the method for finding the Lucas–Canada optical flow were used. The geometric mismatch of the frame images is estimated by the parameters of the general affine model. The method makes it possible to improve the accuracy of trajectory tracking in conditions of changing shooting parameters, in particular, UAV rotations and camera displacement.
DIGITAL IMAGE PROCESSING ON FPGA USING SLIDING WINDOW METHOD
Authors:   Tomsk Polytechnic University, Balakhontsev K.S. , Trigub M.V. ,   Tomsk Polytechnic University,   V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Sciences
Published: October 2024

The report examines the implementation features of a sliding window for digital image processing on the Altera Cyclone II EP2C20F484C7 FPGA and the Baumer CX series camera. The result will present ways to solve problems that arise when implementing a sliding window on the FPGA
CALCULATION OF THE ELECTRIC FIELD AT THE BOUNDARY OF THE FIBER CLADDING WITH AND WITHOUT TAKING INTO ACCOUNT THE CORE
Authors:   Ulyanovsk State Technical University, Abelmas M.A. , Suhov S.V. ,   Ulyanovsk Branch of the Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences, Ivanov O.V. ,   Ulyanovsk Branch of the Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences,   University of Hull
Published: October 2024

The results of mode calculation and simulation of longitudinal and transverse components, including fields at the boundaries of optical fiber, are presented. The difference between the electric field components of optical fibers with and without a core is shown. The importance of the longitudinal field component for high-order modes is demonstrated.
STUDYING THERMAL PROPERTIES OF PHOSPHORENE ON A SIO2 SUBSTRATE USING DEEP LEARNING METHODS
Authors:   Volgograd State Technical University, Badikova P.V. , Zavyalov D.V. ,   Volgograd State Technical University, Konchenkov V.I. ,   Volgograd State Technical University, Shein D.V. ,   Volgograd State Technical University
Published: October 2024

This paper studies the stability and changes in thermal properties of multilayer black phosphorene near a silicon dioxide substrate using molecular dynamics methods. We use deep learning approaches to create a model of the particle interaction force field. The results show that at the interface of materials, substances lose their structure and partially diffuse. However, the further the subsequent phosphorene layers are from the interface, the more its crystalline structure is preserved. The obtained values of the sound velocity in phosphorene in the «armchair» and «zigzag» directions are 3715 m/s and 8415 m/s, respectively.
MULTIPOLE GRAPHENE FRACTAL NANOANTENNAS FOR IR AND OPTICAL FREQUENCY RANGES
Authors:   Ulyanovsk State Technical University, Lebedev E.Yu. , Brazhe R.A. ,   Ulyanovsk State Technical University
Published: October 2024

The results of mathematical modeling in the CST Microwave Studio software package of the characteristics of a graphene plasmon-polariton dipole fractal patch nanoantenna designed to operate in the IR and optical frequency ranges are presented. The patch is made of graphene in the shape of a "bow tie" with wings in the form of a triangular Sierpinski carpet in the fourth iteration. It is shown that, compared with a monopole antenna of the same shape and size, a dipole antenna has a more uniform distribution of the scattering parameter, VSWR, input impedance and radiation power over resonant frequencies.
THE NECESSARY TEMPERATURE AND MAGNETIC FIELD LEVELS FOR OBSERVING THE QUANTUM HALL EFFECT IN GRAPHENE NANORIBBONS
Authors:   Ulyanovsk State Technical University, Reshetnyuk N.A. , Brazhe R.A. ,   Ulyanovsk State Technical University
Published: October 2024

The analysis of the influence of the size of graphene nanoribbons, temperature and magnetic field induction on the conditions for observing integer and fractional quantum Hall effects in them, taking into account dimensional quantization, is presented.
THE NECESSARY TEMPERATURE AND MAGNETIC FIELD LEVELS FOR OBSERVING THE QUANTUM EFFECTS OF NERNST AND ETTINGSHAUSEN IN GRAPHENE NANORIBBONS
Authors:   Ulyanovsk State Technical University, Shilov D.S. , Brazhe R.A. ,   Ulyanovsk State Technical University
Published: October 2024

The possibilities of experimental observation of integer and fractional quantum effects of Nernst and Ettingshausen in graphene nanoribbons are discussed.
RADIO SHIELDING POLYMER NANOCOMPOSITE
Authors:   Ulyanovsk State Technical University, Nezhneva K.G. , Hajrullova R.M. ,   Ulyanovsk State Technical University, Gusarova V.S. ,   Ulyanovsk State Technical University, Buzaeva M.V. ,   Ulyanovsk State Technical University, Makarova I.A. ,   Ulyanovsk State Technical University
Published: October 2024

The results of determining the protective properties of a polymer nanocomposite screen from electromagnetic radiation to reduce negative impacts from electronic devices are presented. It has been shown that the introduction and dispersion of multi-walled carbon nanotubes in an epoxy polymer increases the shielding coefficient of the electric field strength and magnetic flux density.
INVESTIGATION OF OPTICAL CHARACTERISTICS OF NANOPHOTON SYSTEMS BASED ON A NANOMATERIAL WITH A QUASI-ZERO SURFACE IMPEDANCE
Authors:   Ulyanovsk State University of Education, Altunin K.K. , Selyukova A.D. ,   Ulyanovsk State University of Education
Published: October 2024

The results of a study of the optical characteristics of nanophotonic systems based on nanomaterials with quasi-zero surface impedance are presented. The results of calculating the dependence of the reflection and transmission coefficients of a nanocomposite medium with quasi-zero surface impedance on the wavelength of external radiation are presented.
MULTIFUNCTIONAL COMPARATOR DEVICE FOR SINGLE-CHIP CONTROL SYSTEMS
Authors:   Ulyanovsk State Technical University, Dorodnov A.Y. , Andreev D.V. ,   Ulyanovsk State Technical University
Published: October 2024

The article considers a schematic solution and a Verilog-model of a digital multifunctional comparator device, applicable as a ready functional component of automated control systems of various types, including those implemented in singlechip design using modern technologies for designing digital systems based on VLSI.
PERSPECTIVES OF QUANTUM ALGORITHMS APPLICATION IN ECAD SYSTEMS
Authors:   Ulyanovsk State Technical University, Egorcev K.A. , Klimovsky A.B. ,   Ulyanovsk State Technical University, Romanov A.A. ,   Ulyanovsk State Technical University
Published: October 2024

The advantages and disadvantages of classical component placement and routing algorithms for second-level electronic modules, the integrated placement and routing problem are considered. The prospects of applying quantum computing to solve the integrated problem are discussed.
AN AUTONOMOUS OBJECT SEARCH SYSTEM BASED ON LOW-CONSUMPTION WIRELESS TAGS USING MICROCONTROLLERS AND RADIO MODULES
Authors:   Kazan National Research Technical University named after A.N. Tupolev – KAI, Khakimzyanova S.I. , Nikishina G.V. ,   Kazan National Research Technical University named after A.N. Tupolev – KAI
Published: October 2024

This paper presents the development of an autonomous search system for household items using low-consumption wireless tags based on Arduino family microcontrollers and NRF24L01 radio modules. The system is designed for remote detection of small objects (keys, glasses, etc.) using a remote control that activates the sound and light indicators built into the tags. The methods of minimizing energy consumption through the use of energy saving modes and low-power components are considered. The possibilities of integrating rechargeable batteries and design features aimed at reducing the size of the device are analyzed.
USING SCPI-STANDARD FOR AUTOMATISATION OF MULTI-INSTRUMENTAL DIAGNOSTIC UNITS
Authors:   Ulyanovsk Branch of the Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences, Gavrikov A.A. , Neichev V.F. ,   Ulyanovsk Branch of the Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences,   Ulyanovsk State Technical University
Published: October 2024

The results of the development of an automated diagnostic setup for measuring the non-uniformity of the photoresponse of solar cells using the Standard Commands for Programmable Instruments (SCPI) language are presented. SCPI is a standard syntax and commands for use in controlling programmable testing and measuring devices, such as automatic test equipment and electronic test equipment.
SYSTEMS FOR PROVIDING THERMAL MODES OF RADIOELECTRONIC DEVICES
Authors:   Ulyanovsk State Technical University, Morozov D.I. , Fokin O.S. ,   Ulyanovsk State Technical University
Published: October 2024

The basic information on the principles of providing thermal modes of radioelectronic devices, as well as the main types of cooling systems are listed.
ADDITION OF COMPACT (ELECTRICAL) MODELS OF DEVICE STRUCTURES OF TRANSISTORS WITH HIGH ELECTRON MOBILITY AND HETEROJUNCTION BIPOLAR TRANSISTORS BASED ON A3B5 SEMICONDUCTORS, TAKING INTO ACCOUNT THE CHANGE (DEGRADATION) OF OPERATIONAL CHARACTERISTICS AS A RESULT OF THE IMPACT OF THE EMI
Authors:   Belarussian State University of Informatics and Radioelectronics, Novikov P.E. , Kratovich P.S. ,   OJSC «MNIPI», Lovshenko I.Yu. ,   OJSC «MNIPI»
Published: October 2024

This work is dedicated to investigating the influence of electromagnetic interference (EMI) on the characteristics of integrated circuit (IC) elements, specifically on high-electron-mobility transistors (HEMTs) and heterojunction bipolar transistors (HBTs) based on GaAs. It is shown that the impact of EMI can be accounted for in circuit simulation by applying additional modules implemented in compact models of device structures. A model is proposed that describes the emergence of additional noise in devices under the influence of EMI.
INVESTIGATION OF OPTICAL PROPERTIES OF NANOCOMPOSITE FILM MADE OF METAMATERIAL ACTIVATED BY NANOSIZED INCLUSIONS
Authors:   Ulyanovsk State University of Education, Altunin K.K. , Zakharova O.N. ,   Ulyanovsk State University of Education
Published: October 2024

The results of investigation of optical properties of nanocomposite film made of metamaterial activated by nanosized inclusions are presented. It is shown that it is possible to effectively control the values of the complex refractive index of the nanocomposite film with a metamaterial matrix by changing the composition and geometric configuration of nanocomposite inclusions.
NONLINEAR DYNAMICS OF SPIN WAVES IN LATERAL MAGNETIC MICROWAVEGUIDES
Authors:   Saratov State University, Ptashenko A.S. , Odintsov S.A. ,   Saratov State University, Sadovnikov A.V. ,   Saratov State University
Published: October 2024

This paper presents a numerical study of nonlinear dynamics of spin waves in two-layer lateral magnetic microwaveguides. The analysis is based on a system of two lateral microwaveguides made from YIG film, placed on a substrate of gadolinium-gallium garnet (GGG). Using the finite element method to solve Maxwell's equations, the effects of nonlinear switching of spin-wave signal power and its impact on the field distribution in the system are investigated. It is shown that inhomogeneity of the internal magnetic field and structural features lead to the formation of spinwave zones and phase shifts, which opens up possibilities for the development of nonlinear devices such as branchers, diodes, and power dividers in planar magnon networks for selective signal processing.
ELASTIC PROPERTIES OF MEMBRANE ELEMENTS BASED ON ANODIC ALUMINUM OXIDE
Authors:   Belarusian State University of Informatics and Radioelectronics, Tsaladonov A.D. , Biran S.A. ,   Belarusian State University of Informatics and Radioelectronics, Korotkevich A.V. ,   Belarusian State University of Informatics and Radioelectronics
Published: October 2024

In this paper, the authors describe the method of studying the elastic properties of combined film structures and the method of their preparation. The results of the study of the influence of the conditions of formation of combined structures based on anodic aluminum oxide on the Young's modulus of these structures are presented. The possibility of obtaining structures with specified elastic properties by changing the anodization parameters is shown.
DESIGN OPTIMIZATION FOR QUANTUM WELL INFRARED PHOTODETECTOR BASED ON GALLIUM NITRIDE
Authors:   Belarusian State University of Informatics and Radioelectronics, Volchech V.S.
Published: October 2024

The spectrum of the absorption coefficient of an infrared photodetector using intrasubband transitions in quantum wells based on gallium nitride was calculated for different values of the composition of the barrier layers and the concentration of donor impurity in the quantum wells. It was shown that an increase in the mole fraction of aluminum in the material of the barrier layers and the electron concentration in quantum wells leads to a shift of the absorption peak towards the visible range.
TEMPERATURE DETERMINATION OF THE AlInGaN LASER ACTIVE REGION BY IR MICROSCOPY & TRANSIENT THERMAL TESTS
Authors:   SHM R&E Center, RAS, Ivanov A.E. ,   Saint Petersburg Electrotechnical University, Chernyakov A.E. ,   SHM R&E Center, RAS
Published: October 2024

In this study, the individual components of thermal resistance in a AlInGaN laser were experimentally analyzed. The thermal resistance was measured using two approaches: an indirect method, based on the measurement of transient temperature-sensitive characteristics (the voltage at the p-n junction) with the T3Ster device, and a direct method using an infrared thermal imaging microscope.
THE TIME OF THE PHOTOINDUCED SEMICONDUCTOR-METAL PHASE TRANSITION IN A VANADIUM DIOXIDE FILM
Authors:   Ulyanovsk State University, Semenov A.L. , Kulishkin E.M. ,   Ulyanovsk State University
Published: October 2024

The dependence of the time of the photoinduced semiconductor-metal phase transition on the thickness of the vanadium dioxide film and the distance to the film surface is obtained.
DYNAMICS OF WAVE PACKETS WITH STRONG PHASE MODULATION IN OPTICAL FIBERS WITH A DECREASING DISPERSION PROFILE
Authors:   Ulyanovsk State University, Abramov A.S. , Mironov P.P. ,   Ulyanovsk State University, Lapin V.A. ,   Ulyanovsk State University
Published: October 2024

We have considered the dynamics of radiation with strong phase modulation in a fibers with a decreasing exponential profile of group velocity dispersion. It is shown that the magnitude of phase modulation determines the peak power of the generated pulses. Also, phase modulation of the input radiation has a significant effect on the repetition rate and peak power of the generated laser pulses.
DELECTROPHYSICAL PROPERTIES OF MULTILAYER STRUCTURE Al-TiOX-CuOX-Al
Authors:   Tomsk State University of Control Systems and Radioelectronics, Urazbekov A.E. , Troyan P.E. ,   Tomsk State University of Control Systems and Radioelectronics, Sakharov Y.V. ,   Tomsk State University of Control Systems and Radioelectronics
Published: October 2024

The results of the study of memristors presented in the form of a multilayer AlTiOx-CuOx-Al structure with the property of bipolar resistive switching are shown. The samples were obtained by magnetron sputtering in an air atmosphere at a pressure of 5×10-3 mmHg. Electron microscopic analysis showed that the copper oxide layer has a columnar structure and a non-stoichiometric ratio of elements, due to which the memristive effect is enhanced.