bluuebunny/crossref_metadata_2025_split huggingface dataset:
Сучасні тенденції розвитку двигунів безпілотних літальних апаратів
Authors: Savchenko Anatolii , Obodets Dmytro 
Published: November 2024

The subject of this study is the current state and prospects for the development of the market for unmanned aerial vehicles (UAVs) and power plants. The purpose of this work was to identify trends in the development of UAV engines of various classes. Task: collection, systematization, and analysis of information on the most common engines of reconnaissance and strike UAVs of the operational-tactical level, as well as UAVs of the "barrage ammunition" class. This article provides a brief description of various types of UAV power plants, and their main advantages and disadvantages are given, which are often decisive when choosing the type of power plant for a specific UAV. It was found that a power plant with an internal combustion engine (ICE) is best suited for use in medium- and long-range UAVs.This study demonstrated that four-stroke internal combustion engines are most commonly used in reconnaissance-strike UAVs at both operational and tactical levels. The features of the design and characteristics of four-stroke internal combustion engines, which have become the most widely used UAVs, are described. It was determined that the introduction of turbocharging or increasing the pressure is the main means of forcing four-stroke internal combustion engines, which makes it possible to simultaneously achieve high specific power and high brake efficiency of the engine over a wide range of altitudes during its operation. It is shown that one of the most important tasks for a long-range UAV engine is to reduce the specific brake fuel consumption. Thus, there is a tendency to promote the use of high-powered aviation diesels in long-range UAVs. It was determined that the main requirements for UAV engines of the "barrage ammunition" class are high specific power, low cost and adaptability to mass production. This study shows that gasoline two-stroke internal combustion engines with crank-chamber scavenging are extremely widespread in UAVs of the "barrage ammunition" class. The design features and characteristics of UAV two-stroke internal combustion engines are described. The main means of ensuring high specific power of such two-stroke internal combustion engines are increasing the engine RPM, optimizing gas exchange processes, and reducing the weight of the construction by using new materials. Conclusion. The results show that depending on the UAV type, the set of engine requirements can vary significantly. Modern trends in the development of UAV engines of various classes have been determined. Potentially promising directions for increasing the efficiency of engines and for comprehensive improvement of their indicators and characteristics have been determined.
Theoretical analysis of the forming process of closed die forging with flash and optimization design method of flash gutter
Authors: Zhang Xiang , Borysevych Volodymyr 
Published: November 2024

The subject of this article is the forming process of closed die forging with flashes and the optimal design of the flash gutter dimensions. The goal is to conduct an in-depth theoretical analysis of the forming process of closed die forging with flash and to research the optimal design of the flash gutter dimension, aiming to improve the scientificity and efficiency of the forging process, guide the optimization of process parameters in actual production, extend the service life of dies, reduce material waste, and enhance product quality and production efficiency. The tasks were to establish an accurate mathematical model for closed die forging with flash to analyze metal plastic deformation and stress distribution, to conduct in-depth research on key factors such as stress distribution, position of the neutral plane, and flash gutter design during the forming process, and to validate the mathematical model through finite element simulation using DEFORM-2D software. The methods used include theoretical analysis, mathematical modeling, and finite element simulation validation. The theoretical analysis provides a foundation for understanding the forming process and stress distribution, whereas the mathematical model allows for quantitative analysis. Validation of the finite element simulation provides a means to test and refine the theoretical analysis and mathematical model. The following results were obtained: the existing mathematical model underestimates the height of the main deformation zone, which results in an unreasonable flash gutter design. After verification and correction, the error in the optimized mathematical model did not exceed 10 %, and the flash amount was significantly reduced. Additionally, a stress analysis of difficult-to-fill cavity positions revealed that the entrance radius of the cavity significantly affects the final filling. Conclusions. The scientific novelty of the results obtained is as follows: A mathematical model of closed die forging with flash was established to analyze the metal plastic deformation and stress distribution, providing theoretical support for die design optimization, forging quality improvement, cost reduction, and productivity improvement. Using the Deform-2D finite element simulation, the optimal design criterion for the flash was refined, resulting in a substantial reduction in the flash amount and material savings.
Модель та метод навчання детектора об’єктів на аерозображенні з оптимізацією робастності та кількості обчислень
Authors: Moskalenko Alona , Zaretskyi Mykola , Vynohradov Maksym , Babych Vladyslav 
Published: November 2024

The subject of research is Neural network-based object detectors, which are widely used for video image analysis. An increasing number of tasks now demand data processing directly at the source, which limits the available computational resources. However, the vulnerability of neural networks to noise, adversarial attacks, and weight error injections significantly diminishes their robustness and overall effectiveness. The relevant task is to develop models that provide both computational efficiency and robustness against perturbations. This paper investigates a model and method for enhancing the robustness of neural network detectors under limited resources. The objective is to design a model that allocates resources optimally while maintaining stability. To achieve this, the study employs techniques such as dynamic neural networks, robustness optimization, and resilience strategies. The following results were obtained. A detector with a feature extractor based on ViT-S/16, modified with gate modules for dynamic examination was developed. The model was trained on the RSOD dataset and meta-learned on the adaptation results to various perturbations. The model's resistance to random bit inversions in weights (10 % of weights) and to adversarial attacks with perturbation amplitudes up to 3/255 (L∞ norm) was tested. Conclusion. The proposed detector model incorporating dynamic examination and optimized robustness, reduced floating-point operations by over 20 % without loss of accuracy. A novel method for training the detector was developed, combining the RetinaNet loss function with the loss function of gate blocks and applying meta-learning on the adaptation results for various types of synthetic perturbations. Testing demonstrated an increase in accuracy by 11.9 % under the influence of error injection and by 13.2 % under the influence of adversarial attacks.
Sharia Development Strategy in a Sustainable Economy in Surabaya
Authors: Rohmah Ainun Nafisatur , Safier Muhammad Haykal , Hasanah Syariatul 
Published: November 2024

Surabaya has a strategic role for the national priority scale in a sustainable economy, especially in East Java. This research aims to provide an in-depth understanding of sharia development strategies that can overcome various economic challenges faced by the city of Surabaya. Thus, through the analysis of sharia development strategies in the context of the economy in Surabaya, it is hoped that this research can provide new insights for readers and the public in advancing a sustainable economy in this city. The method used in this research is qualitative research, with a library research approach that uses books and other literature as the main material for information about the object of research and theories relevant to the problem in the research.
Tindakan Eksibisionisme dalam Aplikasi Ome TV: Tinjauan Pemidanaan Menurut Hukum Positif di Indonesia
Authors: Aziz Ichwa Ria , Nurmalawaty  , Yunara Edi 
Published: November 2024

Eksibisionisme melalui aplikasi Ome.TV mengacu kepada tindakan yang menampilkan perilaku atau konten secara eksplisit dan tindakan yang tidak pantas kepada orang lain menggunakan platform. Perilaku ini dianggap illegal menurut hukum positif di Indonesia dan memiliki konseksuensi hukum sebagai tindakan cabul atau tindakan menyimpang. Adapun permasalahan penelitian ini bagaimana pengaturan hukum mengenai tindakan eksibisionisme dalam aplikasi Ome.TV berdasarkan hukum positif di Indonesia? bagaimana pemidanaan yang dapat dikenakan bagi pelaku eksibisionisme dalam aplikasi Ome.TV? dan Bagaimana pertanggungjawaban yang dapat dituntut dari pihak pengelola atau pemilik aplikasi Ome. TV Penelitian ini bersifat normatif dan menggunakan data sekunder melalui studi kepustakaan didukung hasil wawancara.
Hasil penelitian bahwa eksibisionisme merupakan tindakan penyimpangan seksual yang dapat dipidana dan termasuk kedalam pelanggaran menurut hukum positif di Indonesia. Mengenai pengaturan hukum tindakan eksibisionisme ini unsurnya terdapat di dalam“Pasal 281, dan Pasal 289 Kitab Undang-Undang Hukum Pidana, Pasal 10 dan 36 Undang Undang Nomor 44 Tahun 2008 tentang Pornografi, Pasal 27 ayat (1) dan Pasal 45 ayat (1) Undang-Undang Nomor 11 Tahun 2008 Tentang Informasi dan Transaksi Elektronik yang diubah dengan Undang-Undang Nomor 19 Tahun 2016 Tentang Perubahan Atas Undang-Undang Nomor 11 Tahun 2008 Tentang Informasi Dan Transaksi Elektronik, Pasal 414, Pasal 414 ayat (1) huruf c, dan Pasal 406 Undang-Undang Nomor 1 Tahun 2023 Tentang Kitab Undang-Undang Hukum Pidana, dan Pasal 5 Undang-Undang Nomor 12 Tahun 2022 Tentang Tindak Pidana Kekerasan Seksual.”Pemidanaan yang dapat dikenakan kepada pelaku tindakan eksibisionisme ini berupa pidana penjara dan denda, namun terdapat putusan hakim yang melepaskan pelaku eksibisionisme dari jeratan hukuman.
Neraca Energi Dengan Variasi Volume Air Pada Evaporator Dengan Memanfaatkan Air Bersih Sebagai Air Umpan
Authors: Sriwijayasih Imaniah , Leonard Rikky , Putri Maharani Cindy , Prasetyo Teguh , Muhammad Abubakar Kiagus 
Published: November 2024

Evaporator adalah alat yang digunakan untuk mengubah fase air menjadi fase uap. Untuk mengetahui performa evaporator berjalan dengan baik atau tidak kita bisa tinjau di perhitungan neraca panas untuk mengertahui seberapa besar efisiensinya. Panas yang dihasilkan dari alat destilasi tidak semuanya diserap oleh air melainkan juga hilang karena mekanisme perpindahan panas konduksi, konveksi dan radiasi. Oleh karena itulah dilakukan perhitungan panas konduksi, konveksi dan radiasi agar memaksimalkan efisiensi energinya. Dari perhitungan neraaca panas total input dan output dengan variasi volume air umpan 1 liter, 1.5 liter, 2 liter, 2.5 liter, 3 liter, 3.5 liter bernilai sama yang menandakan bahwa dalam menghitung sudah sesuai dengan Hukum 1 Termodinamika yang berbunyi input = output dan sudah tergolong sangat baik. Dari sisi efisiensi energi dengan perhitungan pada volume 1 liter bernilai 70,68 % sedangkan pada perhitungan efisiensi pada volume 3.5 liter 52,77 % bernilai. Agar lebih memakismalkan efisiensi pada proses destilasi air, sebaiknya dilakukan pemeriksaan rutin pada evaporator dan alat destilasi lainnya agar tidak terjadi korosi atau fouling agar apabila terjadi penurunan performa dapat segera diperbaiki sehingga proses menjadi maksimal.
Pengaruh Bentuk Saluran Terhadap Kerugian Tekanan pada Aliran Fluida Lumpur
Authors: Ridwan Ridwan , Bondan Aditya , Setyawan Iwan 
Published: November 2024

Kerugian tekanan yang terjadi saat fluida dialirkan sangat penting utuk diketahui karena akan berpengaruh pada efisiensi sistem. Penelitian ini bertujuan memahami pengaruh bentuk saluran pipa terhadap kerugian tekanan yang terjadi. Metode yangdigunakan dalam penelitian ini adalah metode simulasi berbantu software solidworks dan software Computational Dynamics (CFD) Openfoam. Desain dua dimensi (2D) dan tiga dimensi saluran (pipa) menggunanakan software solidworks, dan simulasi menggunakan software OpenFoam. Dilakukan variasi bentuk pipa atau saluran yaitu pipa bulat (circular Pipe) dan pipa persegi (square pipe), juga dua variasi konsentrasi atau kekentalan lumpur/weight Concentration (CW) yakni CW= 10 % dan CW= 30 %, dengan masing-masing kecepatan aliran konstan 3 meter/detik, serta diamater saluran 25,4 mm. Hasil penelitian menunjukkan bahwa saluran pipa persegi menghasilkan kerugian tekanan (pressure drop) yang lebih rendah/lebih kecil dibanding kerugian tekanan pada pipa bulat. Semakin tinggi tingkat konsentrasi padatan (CW) akan menghasilkan kerugian tekanan yang lebih besar, hal ini terjadi baik pada pipa persegi maupun pada pipa bulat.
RANCANG BANGUN SEAL UPGRADE DESIGN PADA SILINDER HIDROLIK CENTER POST MITSUBISHI DENGAN UJI TEKANAN KERJA 140 BAR
Authors: Mardiana Mardiana , Yuliaji Dwi , Waluyo Roy 
Published: November 2024

Silinder hidrolik Center Post Mitsubishi adalah jenis silinder hidrolik double acting, yang diaplikasikan pada mesin curing pencetak ban. Tujuan dari penelitian ini adalah untuk memperoleh seal pengganti OEM yang berfungsi sebagai spare part. Data operating condition atau hasil pendataan di lapangan pada silinder tersebut yaitu temperatur pada tube silinder 85 ⁰C, temperatur pada rod/batang silinder180 °C, tekanan kerja saat beroperasi 100 Bar dan tekanan kerja maksimal nya 140 Bar. Komponen seal yang terpasang pada hidrolik tersebut adalah wiper seal, rod seal + back up, piston seal, rod bearing, piston bearing, dan O-ring gland. Rancang bangun berdasarkan analisa seal OEM, dimensi groove seal dan standar seal yang sudah ada pada katalog dan program mesin CNC seal tersebut. Material yang digunakan untuk wiper seal mengunakan material FPM dengan tipe seal W001, untuk rod seal + back up menggunakan material FPM + PTFE virgin dengan tipe seal R001 + BU008, untuk piston seal menggunakan material H-PU dengan tipe seal P001, untuk rod bearing dan piston bearing menggunakan tipe band bearing BB001 dengan material PTFE D46, dan untuk o-ring gland menggunakan material viton. Pengujian dilakukan secara bertahap, tahap pertama dengan tekanan kerja 70 bar, tahap kedua dengan tekanan kerja 100 bar dan tahap ketiga dengan tekanan kerja 140 bar. Hasil pengujian menunjukan seluruh seal tidak terjadi kebocoran.
Faktor-Faktor yang Memengaruhi Kinerja SDM dan Kinerja Organisasi : Sebuah Tinjauan Literatur
Authors: Melly Indrawaty  , Padhil Lutfi , Mukti Reza Wibawa 
Published: November 2024

Penelitian ini dilakukan untuk mengetahui faktor-faktor yang mempengaruhi kinerja SDM dan kinerja organisasi, sehingga dengan demikian dapat disusun program-program yang dapat membantu organisasi dalam meningkatkan motivasi kerja karyawan, kepuasan kerja karyawan, dan mengatasi hambatan-hambatan yang memperngaruhi kinerja. Hal ini dapat meningkatkan efektivitas kerja anggotanya, membangun profesionalisme, serta memperoleh kepercayaan. Menggunakan metode studi literatur dengan mengumpulkan data sekunder dari penelitian terdahulu yang relevan dengan topik yang sama, jurnal-jurnal terakreditasi yang dipublikasikan antara tahun 2019 hingga 2023 digunakan dalam penelitian ini. Berdasarkan tinjauan literatur, ditemukan bahwa perilaku organisasi, kepuasan kerja, lingkungan organisasi, budaya organisasi, pembelajaran organisasi, dan kepemimpinan berpengaruh secara signifikan terhadap hasil kinerja SDM. Faktor-faktor tersebut mencakup beberapa aspek meliputi: motivasi kerja yang tinggi dan efektif, pembelajaran terus menerus di tingkat individu, tim, dan organisasi, komunikasi yang baik dan sikap saling percaya yang terbangun mampu meningkatkan motivasi, produktivitas, dan komitmen terhadap organisasi.
Trading Trends: Unveiling The Impact of Sentiment, Behavior and Performance on Online Trading in Eastern Priangan
Authors: Badriatin Tine , Kurniawan Kurniawan , Subrata Ali , Budianto Apri 
Published: November 2024

Pasar modal merupakan indikator kemajuan perekonomian suatu negara dimana pasar modal dapat menunjang ekonomi negara yang bersangkutan. Pasar Modal memiliki peran penting bagi perekonomian suatu negara karena pasar modal menjalankan dua fungsi, yaitu pertama, sebagai sarana bagi pendanaan usaha atau sebagai sarana bagi perusahaan untuk mendapatkan dana dari masyarakat pemodal atau investor. Banyak faktor yang berpengaruh terhadapnya tiga di antaranya adalah market sentimen, investor behavior dan stock market performance dan market sentimen merupakan aspek yang memiliki pengaruh besar terhadap terhadap intensitas penggunaan sistem perdagangan online oleh investor di Priangan Timur, begitu juga dengan investor behavior dan stock market performance,, sama sama memiliki pengaruh besar terhadap intensitas penggunaan sistem perdagangan online oleh investor. Metode yang digunakan adalah pendekatan kuantitatif dengan hasil menunjukkan bahwa market sentimen, investor behavior dan stock market performance berpengaruh besar terhadap intensitas penggunaan sistem perdagangan online oleh investor.
Phenomenological Study and The Effect of Human Resources Capability and The Implementation of Performance-Based Budgeting (PBB) Model on Institution Performance
Authors: Supriyadi Imam , Nurhayati Immas , Tanjung Hendri 
Published: November 2024

The purpose of this study was to analyze the phenomenological study and the effect of human resources capability and the implementation of performance based budgeting (PBB) on institution performance. This study uses mix method. The results of deep interview can concluded that the implementation of PBB at University of Ibn Khaldun Bogor had been carried out but haven’t maximal yet in implementation. The relationship between the human resources capability and the implementation of PBB with institution performance will be tested using multiple linear regression analysis. The independent variables are the human resources capability and the implementation of PBB and the dependent variable is institution performance. The relationship between variabels can be written: Y = 0,467+ 0,183 X1 + 0,798X2. Based on a multiple regression test, only the implementation of performance based budgeting variables have a significant effect on institution performance. The F test showed that all variables can explain the dependent variables. The coefficient of determination of 75,4% means human resources capability and the implementation of performance based budgeting affect institution performance by 75,4%, and the remaining 24,6% is influenced by other factors that are not described in this study.
The future of warfare. Anticipated changes in military trends
Authors: Hasanov Arif , Tahirov Rashad , Iskandarov Khayal 
Published: November 2024

Purpose: to discuss the changes in the scientific and technical field, and examine their impact on military art.
Method: comparative analysis, and synthesis.
Findings: Today's military and political realities require the Armed Forces to be ready for wars that may occur at any time, including in the future, in order to ensure the country's national security. Because, as in the past, the struggle for natural resources, competition between states, aspirations for hegemony, as well as ideological differences and security concerns, which lead to military conflicts, will continue in the future. At the same time, the great progress achieved and expected in the field of technology will significantly change the traditional forms and methods of fighting. The study and skillful application of these forms and methods in the Armed Forces will be one of the main conditions for success in future wars. Scientific and technical progress affects all areas of human activity without exception, and has a noticeable effect on the development of methods and forms of war. In the future, the content and typology of military operations, strategy and tactics, forms and methods of application of armed forces will be formed under the influence of scientific and technical progress, mainly in the fields of artificial intelligence, biotechnology, and nanotechnology. For this reason, in order to study the nature of future wars, to predict the methods and forms of military operations, the article considers the causes of wars, discusses the changes in the scientific and technical field, and examines their impact on military art.
Theoretical implications: The paper enhances our understanding of significant transformations due to advancements in technology, changes in geopolitical dynamics, and evolving societal expectations, against the backdrop of the extensive use of autonomous systems, including drones, unmanned vehicles, and AI-powered decision-making tools.
Practical implications: The paper contibutes to the development of military strategies and operational plans, which consider how technological, social, and geopolitical changes will concretely affect the future warfare.
Value: The study offers significant value in understanding and predicting the nature and character of future warfare and provides multiple lenses through which to analyze the war and devise strategies in line with emerging security threats.
Обґрунтування показників та критеріїв для удосконалення методики оцінювання ефективності управління забезпеченням економічної безпеки агрофірм
Authors: Henchevska Viktoriia 
Published: November 2024

Мета роботи: вибір та обґрунтування показників і критеріїв щодо управління забезпеченням економічної безпеки агрофірм у складних умовах російсько-української війни та на їх основі удосконалення методики адекватного оцінювання ефективності управління забезпеченням економічної безпеки агрофірм в умовах російсько-української війни (кризових ситуаціях).
Метод дослідження: методи аналізу та синтезу, метод системного підходу, методи експертного оцінювання та групування, графічний та абстрактно-логічний методи.
Практична цінність дослідження: проаналізовано існуючі показники економічної безпеки аграрних підприємств (агрофірм) та підходи до оцінювання рівня ефективності цього процесу; обґрунтовано показники та критерії щодо управління забезпеченням економічної безпеки агрофірм в складних умовах російсько-української війни та на їх основі удосконалено методику адекватного оцінювання ефективності управління забезпеченням економічної безпеки агрофірм в умовах російсько-української війни (кризових ситуаціях).
Цінність дослідження: удосконалена методика оцінювання ефективності управління забезпеченням економічної безпеки агрофірм за визначеними показниками та критеріями, які враховують всі складові економічної безпеки агрофірми та визначено зони економічної безпеки агрофірми, що дозволяє розробити комплекс заходів щодо забезпечення належного рівня економічної безпеки, підвищити ступінь економічної обґрунтованості прийняття рішення стосовно пріоритетності реакції агрофірми щодо самозбереження, стабілізації, формування конкурентної, інноваційної позицій або позиції забезпечення довгострокового потенціалу в межах забезпечення економічної безпеки агрофірми.
Майбутні дослідження: напрямами подальших досліджень можуть бути формування стратегії управління забезпеченням економічної безпеки агрофірм; розроблення науково-методичного інструментарію для оцінювання управління забезпеченням економічної безпеки агрофірм; побудова моделі удосконалення процесу управління забезпеченням економічної безпеки агрофірм та алгоритму її імплементації.