bluuebunny/crossref_metadata_2025_split huggingface dataset:
EQUIVALENT HYBRID DIPOLE MODEL OF ELECTROMAGNETIC INTERFERENCE ESTIMATION BASED ON ARTIFICIAL NEURAL NETWORK
Authors: Ромащенко М.А. , Васильченко Д.В. , Пухов Д.А. 
Published: July 2023

предлагается новая эквивалентная гибридная дипольная модель с искусственной нейронной сетью (ИНС) для оценки электромагнитных помех (ЭМП), генерируемых в процессе работы устройства. Традиционная дипольная модель обычно не учитывает эффекты многократного отражения и дифракцию между источником электромагнитных помех и его близлежащими компонентами, вследствие чего в некоторых случаях это приводит к неточному результату расчетов. В предлагаемом методе функция диполя Грина берется в качестве входных данных, а излучаемое электромагнитное поле берется в качестве выходных данных ИНС. Применение мощных возможностей обработки ИНС необходимо для модификации матрично-векторного умножения между функцией Грина в свободном пространстве и дипольными моментами в традиционной дипольной модели, так что устанавливается новое отображение между эквивалентными диполями и их излучаемыми полями. Такой подход способствует повышению эффективности обработки данных экспериментов с применением программно-аппаратного комплекса (ПАК) сканирования электронных устройств в ближнем поле за счёт ускорения работы и повышения точности обработки данных. Последующее совершенствование алгоритмов позволит расширить область применения разрабатываемого программного обеспечения на базе описанной методики
the article proposes propose a new equivalent hybrid dipole model with artificial neural network (ANN) to estimate electromagnetic interference (EMI) generated during device operation. The traditional dipole model usually does not take into account the effects of multiple reflection and diffraction between the electromagnetic interference source and its nearby components, which in some cases leads to inaccurate calculation results. In the proposed method, the Green's dipole function is taken as input data and the emitted electromagnetic field is taken as output data of the ANN. The application of powerful ANN processing capabilities is necessary to modify the matrix-vector multiplication between the Green's function in free space and the dipole moments in the traditional dipole model, so that a new mapping between the equivalent dipoles and their emitted fields is established. This approach improves the efficiency of near-field electron scanning hardware-software complex (NHC) experiments by accelerating the work and improving the accuracy of data processing. Subsequent improvement of the algorithms will make it possible to expand the area of application of the software developed based on the described technique
LOW-ELEMENT ANTENNA ARRAY WITH INCREASED COVERAGE AREA
Authors: Лукьянчиков А.В. 
Published: July 2023

интенсивное развитие современного общества требует наличия современных систем связи, в частности, пятого поколения. Использование нелицензируемого диапазона Wi-Fi в качестве «последней мили» сетей 5G может ускорить их внедрение. Однако пропускная способность системы может стать узким местом, так как она зависит от соотношения сигнал/шум в радиоканале. Для увеличения бюджета радиоканала можно использовать антенны с управляемой диаграммой направленности, которые, как правило, реализуются с помощью фазированных антенных решеток. Малоэлементная решетка может быть использована для обеспечения максимальной скорости связи в системе Wi-Fi, при этом требуется минимальное количество элементов для управления диаграммной характеристикой. Обоснованно выбран излучатель такой решетки и определены его геометрические параметры. Также выбрано оптимальное расстояние между элементами и дискрет фазы между входами, что позволило увеличить зону обслуживания на 76 %. Была предложена достаточно простая схема возбуждения и структурная схема устройства возбуждения на основе двух дискретных фазовращателей и двух делителей мощности
the intensive development of modern society requires the presence of modern communication systems, in particular fifth-generation networks. The use of unlicensed Wi-Fi spectrum as the "last mile" of 5G networks can accelerate their implementation. However, the system's throughput may become a bottleneck as it depends on the signal-to-noise ratio in the radio channel. To increase the radio channel budget, antennas with controllable directional patterns can be used, which are usually implemented using phased antenna arrays. A low-element array can be used to provide maximum communication speed in a Wi-Fi system, while requiring a minimum number of elements to control the directional pattern. In this work, the radiator of such an array is chosen and its geometric parameters are determined. Also, as a result of the study, the optimal distance between elements and discrete phase differences between inputs are selected, which allowed increasing the coverage area by 76%. A relatively simple excitation scheme and a structural diagram of the excitation device based on two discrete phase shifters and two power dividers are also proposed
ANALISIS PEMBIASAAN PENDIDIKAN ISLAM DALAM MEMBENTUK KARAKTER RELIGIUS SISWA KELAS V di SD ISLAM ALMADINA SEMARANG
Authors: Prasetya Suhana Yuha 
Published: July 2023

Tujuan penelitian ini adalah untuk mendeskripsikan mengenai pembiasan pendidikan islam dalam membentuk karakter religius siswa kelas V di SD Islam Almadina Semarang. Metode penelitian yang digunakan adalah deskriptif kualitatif. Teknik pengumpulan data dalam penelitian ini menggunakan observasi; wawancara; dan dokumentasi. Teknik analisis data yang digunakan yaitu Reduksi data (Data Reduction), Penyajian data (Data Display), dan Verifikasi Data/ penyimpulan (Conclusions Drowing). Hasil penelitian menunjukkan bahwa adanya pembentuka karakter religius melalui metode pembiasaan yang sudah diterapkan dan dijalankan di SD Islam Almadina Semarang diantarannya: (1) berdoa sebelum dan setelah pembelajaran; (2) hafalan surat-surat pendek; (3) pelaksanaan sholat dhuha; dan (4) menerapkan budaya 5S (Salam, Senyu, Sapa, dan Santun). Dengan adanya kegiatan pembiasaan yang sudah dijalankan tersebut implementasi dari cara-cara yang digunakan untuk membentuk karakter religius siswa kelas V di SD Islam Almadinah Semarang.
PENGEMBANGAN LEMBAR KERJA PESERTA DIDIK (LKPD) MATA PELAJARAN IPAS DI KELAS IV SD BERBASIS KEBUTUHAN PESERTA DIDIK
Authors: Anggrayni M. , Saputra Riyadi , Yusrida  
Published: July 2023

This research is motivated by the lack of development of LKPD, the LKPD used is a school package book and is not in accordance with the independent curriculum and it must be adjusted to the curriculum and the needs of students, so that it has an impact on students such as being less active in ongoing learning activities, the learning process seems to watch and learning success becomes low. Efforts to overcome these problems require teaching materials in the form of LKPD based on the needs of students so that so that education students can be more active, independent and can achieve the learning goals that have been applied. This research aims to produce teaching material products in the form of LKPD based on student needs. this type of research is Research and Development development. This development model is the ADDIE development model. In the development of ADDIE there are five stages of procedures, namely Analysis, Design, Development, Implementation and Evaluation. Based on the validity test results of three expert validators have a content validation score of 77.7%, graphic aspect 76.6%, and language aspect 93%. Based on these three aspects of the assessment, the average percentage is 81% with a very valid category. The results of the practicality test from the assessment of grade IV teacher responses were obtained 87.5% and the assessment of students was obtained 85.21%. So that a percentage of 85% is obtained with a very practical category. Based on these results, it can be concluded that the LKPD based on the needs of Class IV Elementary IPAS Subject Students developed can be declared valid, practical and effective.
Unraveling the Role of Prenyl Side-Chain Interactions in Stabilizing the Secondary Carbocation in the Biosynthesis of Variexenol B
Authors: Nakano Moe , Gemma Rintaro , Sato Hajime 
Published: July 2023

Terpene cyclization reactions involve a number of carbocation intermediates. In some cases, these carbocations are stabilized by through-space interactions with π orbitals. Several terpene/terpenoids, such as sativene, satalene, bergamotene, ophiobolin and mangicol, possess prenyl side-chains that do not participate in the cyclization reaction. The role of these prenyl side-chains has been partially investigated, but remains elusive in the cyclization cascade. In this study, we focus on variexenol B that are synthesized from iso-GGPP, as recently reported by Dickschat and co-workers, and investigate the possibility of through-space interactions with prenyl side-chains using DFT calculations. Our calculations show that (i) unstable secondary cation is stabilized by the cation-π interaction from prenyl side-chains, thereby lowering the activation energy, (ii) the four-membered ring formation is completed through bridging from the exomethylene, and (iii) the annulation from the exomethylene proceeds in a barrierless manner.
CULTURE PATTERNS OF BTS FANS IN THE DIGITAL ERA ON THE @INDOMY TWITTER
Authors: Desmiati Desmiati 
Published: July 2023

This article aims to examine the ARMY fandom and see how the new fan culture in the digital era is implemented on the social media Twitter account @INDOMY. This research used method of etnography virtual by Christine Hine (2015). There are two data collection techniques used, namely exploring field sites on the Twitter account @INDOMY and literature review of previous research as additional data to complete research information needs. The results of the study show that fan culture can be seen from four things in the context of the field of fandom on the internet: 1) communication, showing that fans use virtual identities in communicating and producing fan speaking and fan jokes. 2) creativity, fans generate various forms of creative production i.e., memes, fan edits, fan covers and fan fiction, 3) knowledge, in this area the fan base is responsible for providing information to fandom members, and 4) civic power, fans success through fan projects consisting of fan streaming, fan voting, birthday projects and charity activities through donations made by fans.
Keywords: Fandom; Fans Culture; Twitter; ARMY.
MAKNA ANTHEM AKU YAKIN DENGAN KAMU DI SETIAP PERTANDINGAN PSIM JOGJAKARTA
Authors: Pratama Aprilla Ifan 
Published: July 2023

Anthem is a song of pride for the supporters of a football club they support. We often hear that from the many chants or chants from friends, football supporters often compete for creativity so that their proud team wins. But from the yells they showed, it was just a chant, not an anthem. The meaning of this separate anthem is very important because it can influence the players he supports to increase enthusiasm and have previous expectations such as criticism when a club that is defended or supported by all parties of management, players, coaching staff and supporters can evaluate or learn from defeat can be conveyed precisely. The emergence of this anthem has also become interesting football, especially in the Indonesian League because it is a relatively new foreign culture related to the era of Indonesian football before 2014 or since the suspension of the Indonesian League at that time. Not to be missed, the presence of this anthem changed drastically when Indonesian football used to be known even today for its riots and anarchism, but at least it has reduced the number of riots as PSIM Jogjakarta supporters who are known as Brajamusti flocked to the existing Mandala Krida or Sultan Agung stadium. in the city of Bantul, south of the city of Jogja, to showcase the anthem I'm Sure With You. Apart from providing more support to the players, athem is basically a way to express love for the club.

Keywords: Anthem; Chant; Meaning; PSIM; Football Fans Club
Influence of Element Lead (Pb) Content in Tin Plating on Tin Whisker Initiation/Growth
Authors: Hillman David , Pearson Timothy , Wilcoxon Ross , Cooke Grace , Margheim Sue , Gladen Elena , Munson Terry , Fritz Dennis 
Published: July 2023

The implementation of the Restriction of Hazardous Substances (RoHS) European Union (EU) Directive in 2005 resulted in the introduction of pure tin as an acceptable surface finish for printed circuit boards and component terminations. A drawback of pure tin surface finishes is the potential to form tin whiskers. Tin whiskers are a metallurgical phenomenon that is associated with tin rich/pure tin materials and has been a topic of intense industry interest. The acceptance and usage of pure tin by the electronics industry component fabricators is understandable as the pure tin surface finishes are inexpensive, are simple plating systems to operate and have reasonable solderability characteristics. However, high performance/harsh environment electronics typically have product life cycles that are measured in decades and therefore are much more susceptible to the potential long term threat of tin whiskers. The GEIA-STD-0005-2 “Standard for Mitigating the Effects of Tin Whiskers in Aerospace and High Performance Electronic Systems” established the definition of the term “Pb-free tin” as : “Pb-free Tin is defined to be pure tin or any tin alloy with <3% lead (Pb) content by weight. A functional definition of “pure tin” was necessary so that the electronics industry could establish tin whisker risk protocols against a known acceptable target value in terms of soldering materials and processes. An investigation was conducted to determine the influence of 1% - 5% elemental lead (Pb) content in tin plating on tin whisker initiation and growth. The investigation results were used in the revision of the GEIA-STD-0005-2 “Standard for Mitigating the Effects of Tin Whiskers in Aerospace and High Performance Electronic Systems” specification technical discussions.
Pb-Free Solders and Aerospace/Defense (A&D) High Performance Considerations
Authors: Rafanelli Anthony , Hillman Dave , Johnson Charmaine , Coyle Richard , Pearson Timothy 
Published: July 2023

The Aerospace & Defense (A & D) industries maintain a high level of interest in the expansive amount of work performed in developing and qualifying Pb-free solder alloys. The three main areas of interest continue to be thermal cycle, mechanical shock, and vibration. The past twenty years have seen an unprecedented increase in alloy development such that the concepts of “generations of solders and “families of solders” have been coined to help manage the numerous individual alloys on the market today. This paper will discuss work done with Pb-free solder alloys, many with the addition of constituents focusing on varying property enhancements. The purpose is to provide a “snap shot” summary of progress to date and relate perspectives both as advantages and concerns solely in a constructive manner to aid researchers in planning their next steps in development and qualification of these alloys.
Modeling the Effects of Thermal Pad Voiding on Quad Flatpack No-lead (QFN) Components
Authors: Wilcoxon Ross , Pearson Tim , Hillman David 
Published: July 2023

Finite element modeling was used to evaluate the effects of thermal pad solder voiding on the thermal resistance of Quad Flatpack No Lead components. This included two different approaches for modeling solder voids: many small, distributed voids, the effects of which were averaged across the entire solder contact area or a single discrete void. Two approaches were used for defining the thermal path established in the solder. The effects of other design parameters - thermal boundary conditions, the presence of thermal vias under the package, and the size of the die power dissipation area – were also addressed. Modeling showed that thermal vias and external boundary conditions had the most significant impact on the package thermal resistance. Solder pad voids and concentrated die-level heat dissipation, for the range used in this study, had noticeable but less significant impacts on thermal resistance. The study also compared different approaches for simulating solder voiding and identified ranges in which modeling simulations are most appropriate.
Diseño y construcción de una turbina eólica de uso comercial mediante un análisis costo beneficio
Authors: Tello Olivas Cristian Alejandro , Flores Hernández Alberto Arturo , Contreras Ocegueda Erandi Lizzete , Medina Álvarez Miguel Ángel 
Published: July 2023

La presente investigación se enfoca desde la selección de tipo de aerogenerador eólico y hasta el diseño y la construcción al menor costo posible para implementarla en el Instituto Tecnológico de Matamoros, Donde se hicieron diferentes pruebas, análisis de costos de materiales y mejoras en el prototipo para implementar en el proyecto, Aprovechando la energía eólica ya que es una fuente de energía renovable que utiliza la fuerza del viento para generar electricidad. El principal medio para obtenerla son los aerogeneradores, “molinos de viento” de tamaño variable que transforman con sus aspas la energía cinética del viento en energía mecánica
The Behavior of Bp He-weak Stars in the Far UV—Paper IX: HD 142990
Authors: Monier Richard 
Published: July 2023

Abstract
The analysis of eighteen spectra of the B6 He-weak star HD 142990 recorded by the SWP camera on board the International Ultraviolet Explorer reveals variations of the far-ultraviolet spectral energy distribution shortwards of 1700 Å over about 6 hr, ie. about 25% of the rotational period. Several Si ii, Si iii and Si iv vary consistently. Silicon must be distributed in a non uniform manner over the surface of HD 142990 so as to modulate the FUV flux over the rotational period. The low resolution spectra also confirm this variability.
Effects on Saudi Female Student Learning Experiences in a Programming Subject Using Mobile Devices: An Empirical Study
Authors: Alanazi Afrah , Li Alice , Soh Ben 
Published: July 2023

There is a dearth of research on how mobile learning might help Saudi female students in particular perform better in computer programming courses. This paper aims to measure educational experiences ofSaudi female students using an empirical study, based on aframework related to mobile learning in a computer programming subject.
The empirical study sample involved 21 students who used the ViLLE software tool in their quizzes in programming class. This study includes a survey with a mixed-method approach. The study results showed that students were satisfied with their mobile learning experience. The degree of satisfaction demonstrates how mobile learning can enhance learning in a computer programming subject.
A Comparative Study on the Performance of 64-bit ARM Processors
Authors: Al-Shaikh Ala'a , Shaheen Ameen , Rasmi Al-Mousa Mohammed , Alqawasmi Khaled , Al Sherideh Ala'a Saeb , Khattab Hebatullah 
Published: July 2023

Mobile devices are playing an important role in our daily lives. Nowadays, mobile devices are not only phones to call and text, but they are also smart devices that enable users to do almost any task that could be done on a regular PC. At the heart of the design of smartphones, there lies the processor to which almost all the development in the smartphone arena is attributed. Recently, ARM processors are among the most prominent processors used in mobile devices, smartphones, and embedded systems. This paper conducts an experimental comparative study of ARM 64-bit processors in terms of performance and their effect on power consumption, CPU temperature, and battery temperature. We use a number of well-known benchmarks to evaluate those characteristics of three smartphones, namely, Snapdragon 778G+, Exynos 1280 and HiSilicon Kirin 980. Those smartphones are all equipped with ARM 64-bit processors. Our results reveal that none of the three-selected smartphones was the best in all characteristics; each has superiority amongst others in certain characteristics and is dominated by others in other characteristics.
Preference, Challenges, and Satisfaction with Using E-Books: Is There a Gender Difference among Omani Nursing Students?
Authors: Thanka Anitha Nesa , Natarajan Jansirani , Joseph Mickael Antoine 
Published: July 2023

Objectives: As technology becomes increasingly popular among millennial nursing students, publishers are transitioning towards electronic textbooks (e-books). E-books have advantages for long-term learning and budget control compared to conventional printed textbooks. This cross-sectional descriptive study examined the perceived usefulness, challenges, and satisfaction with e-books compared to printed textbooks, among Omani nursing students.
Methods: Data was collected from a convenience sample of 77 students who used e-books in a community health nursing course using a valid and reliable survey in the fall 2020 semester. Results: Results showed that despite reporting more challenges with printed textbooks, the majority of students (74%) preferred printed textbooks. Additionally, 71.4% of students had a low level of satisfaction with e-books. Female students had a higher preference for printed textbooks and lower satisfaction with e-books compared to male participants.
Conclusion: More research is needed to understand the reasons behind students' preference for printed textbooks, and to investigate the gender differences observed in this study.
Precise segmentation of fetal head in ultrasound images using improved U‐Net model
Authors: Nagabotu Vimala , Namburu Anupama 
Published: July 2023

AbstractMonitoring fetal growth in utero is crucial to anomaly diagnosis. However, current computer‐vision models struggle to accurately assess the key metrics (i.e., head circumference and occipitofrontal and biparietal diameters) from ultrasound images, largely owing to a lack of training data. Mitigation usually entails image augmentation (e.g., flipping, rotating, scaling, and translating). Nevertheless, the accuracy of our task remains insufficient. Hence, we offer a U‐Net fetal head measurement tool that leverages a hybrid Dice and binary cross‐entropy loss to compute the similarity between actual and predicted segmented regions. Ellipse‐fitted two‐dimensional ultrasound images acquired from the HC18 dataset are input, and their lower feature layers are reused for efficiency. During regression, a novel region of interest pooling layer extracts elliptical feature maps, and during segmentation, feature pyramids fuse field‐layer data with a new scale attention method to reduce noise. Performance is measured by Dice similarity, mean pixel accuracy, and mean intersection‐over‐union, giving 97.90%, 99.18%, and 97.81% scores, respectively, which match or outperform the best U‐Net models.