bluuebunny/crossref_metadata_2025 huggingface dataset:
AN ANALYSIS OF HOW WOMEN’S STRUGGLE PORTRAYED FROM THE MAIN CHARACTER IN THE MOVIE “LITTLE WOMEN (2019)”
Authors: Sutrisno Bejo , Nurhasanah Nadya Putri , Rachmawati Budi
Published: September 2023

This study aims to identify the struggle of women against the figure of Jo March in the movie Little Women (2019) with a feminist approach. The discovery of women’s struggles in this movie, as well as the struggles of Jo March, the main character, in pursuing her dream, are discussed in this research. The researcher used qualitative research in this research. There are two sources of data used to analyze the related issues, namely primary and secondary data sources. Primary data sources from the movie Little Women (2019) and other sources such as international journals, websites, previous research, and other articles. From the researchers’ analysis, there are two conclusions. First, there are problems faced by the main character related to gender stereotypes, such as that women should marry well. The second is the struggle of the main character to pursue her dream in the future, like when the main character cuts her hair to sell, even though hair is a woman's crown at that time.
AN ANALYSIS OF CODE SWITCHING AND CODE MIXING IN CINTA LAURA KIEHL’S VLOG: ‘’CINTA LAURA MEMBANTU ANAK - ANAK MELIHAT DUNIA LEBIH JELAS!’’
Authors: Murtadho Abdul Muhid , Hapipah Siti , Sitohang Mangangar
Published: September 2023

Technological advances have found new ways to express yourself, highlighting your audience more easily. Like making videos that are uploaded to internet sites like YouTube. Uploaded videos are called Vlogs. This is done by Cinta Laura Kiehl in her Video Vlog. Video vlogs can contain works, art, music, and even daily life. the number of celebrities making video vlogs makes the community accept new things, such as the emergence of the phenomenon of using two different languages at one time, or the transfer of one code to another starting to be used by seeing celebrities using or mixing two or more languages in their vlogs. This study examines code switching and code mixing contained in Laura Kiehl's Cinta Laura Kiehl vlog video. The author uses qualitative methods to answer the problem. Therefore, the main purpose of this research is to find out the use of code switching and code mixing, to know the classification of words used and what types of codes are contained in the vlog
THE DIFFICULTIES OF WRITING A RESEARCH PROPOSAL BY STUDENTS OF STIBA IEC JAKARTA
Authors: Afiah Valda , Suhendar Suhendar , Budiarto Budiarto
Published: September 2023

This research aims to analyze the English Literature students’ of STIBA – IEC Jakarta problems in writing final project in English. The causes are viewed from students’ and the lecturers perspective as the advisor and also what are supposed to do to help the student minimize the problems in writing final project. This study used descriptive qualitative method that fully describe the problems as well as solutions in writing final projects. The deep analysis has been done from the student’s and the lecturer’s perspectives. After conducting a survey by doing some interviews and distributing questionnaires, we found that there are so many factors that affects the studnts’ difficulties in finishing their final projects.  This research method is a method of classroom action research conducted to improve the ability of students to make a research proposal through a direct learning model. The process of implementation of the measures is implemented in stages until the research is successful. The procedure initiated actions of (1) the action plan, (2) implementation of the action, (3) observation, and (4) reflection. Results research shows that the ability to write a student thesis research proposal in semesters 7-8 English Literature Study Program 2018 academic year belongs to sufficient qualifications. Semester 7-8 students of the English Literature Study Program STIBA - IEC Jakarta should be helped to really understand how to prepare a thesis research proposal so that they can write research proposals well and in the end students will be able to complete the thesis quickly and on time.
ESP: THE DEVELOPMENT AND THE CHALLENGES
Authors: Umar Umar - , Basuki Slamet
Published: September 2023

The term "English for Specific Purposes" (ESP) refers to a method of teaching English that is centered on the learner's objectives and needs. The ESP technique is a well-liked option in the context of learning English in Indonesia, both at higher schools or universities, especially for students outside of the English major. This method is also consistent with government policies in the area of education, which place an emphasis on the goals of learning English, namely to improve students' proficiency in using English, particularly for academic needs and professional careers with an emphasis on reading skills that enable students to understand authentic material topics relevant to their majors and effectively. This study uses library research, which compiles extensive documentation on a single or a number of topics. Both original sources and secondary sources are used in this investigation. This article presents theoretical research on the following development and challenges: The Fundamental Idea Regarding English for Specific Purposes (ESP); The Needs Analysis Function in ESP; ESP as a Method for Teaching Languages; Curriculum for ESP; ESP Curriculum Design and Goals for teaching ESP
ENGLISH LEARNING USING NATURE-BASED LEARNING METHODS TO INCREASE STUDENT MOTIVATION
Authors: Palupi Muji Endah , Arfani Sri
Published: September 2023

The purpose of this research is to study English learning using nature-based learning methods to increase students' motivation in learning. In the minds of some students there is still a paradigm that assumes that success in learning English is due to talent. This assumption encourages students to be lazy to learn English. They tend to be more desperate and give up when they encounter difficulties in learning. However, learning English can be done anywhere and anytime using any method. The goal is that students can be motivated to develop learning that is more interesting and has a positive impact. The learning environment makes students broader in thinking and expression. The benefits of environment-based media allow students to better understand natural phenomena that occur in everyday life. Utilization of the environment makes the learning process more meaningful with the outdoor model. Students can explore the natural environment and learn practical skills to understand and appreciate aspects of environmental life. Learning activities will be more interesting for students. In addition, the use of the environment encourages an increase in student learning activities using nature-based learning methods
THE EFFECTIVENESS OF AUDIO-VISUAL MEDIA TO IMPROVE STUDENTS’ SPEAKING ABILITY IN MADRASAH TSANAWIYAH (MTs) MA’ARIF MIFTAHUL HUDA LEMPUYANG ANJATAN INDRAMAYU
Authors: Supriyani Supriyani , Sholikhah Mar’atus , Kunah Kunah
Published: September 2023

This study is an attempt to determine the effect of using audio-visual media on improving student learning abilities at MTs Ma’arif Miftahul Huda Lempuyang Anjatan Indramayu. This research is to answer the questions: (1) How is the students’ speaking ability in MTs Ma’arif Miftahul Huda Lempuyang Anjatan Indramayu? (2) How is the fluency of students’ speaking ability in MTs Ma’arif Miftahul Huda Lempuyang Anjatan Indramayu? (3) Hoe effective is audio-visual media to improve students’ speaking ability in MTs Ma’arif Miftahul Huda Lempuyang Anjatan Indramayu? This study used quantitative method.The data collection method used the pre-test method, the treatment method and the post-test method. The population in this study was 251 and a sample of 71 students were taken from grade 8. The results of this study showed the average score of students was 55,5 after being given treatment, there was a significant change in the improvement, the average score of students was 71. Improved learning outcome after using audio-visual media by 15,5 %. From this research, it can be concluded that there is effectiveness in using audio-visual media to improve students’ speaking ability
PERSONALITY MOVEMENT OF MAIN CHARACTER IN LADY BIRD MOVIE DIRECTED BY GRETA GERWIG
Authors: Arfani Sri , Kameswari Agung Ayu
Published: September 2023

Movie has been developing since the 18th century, from just a moving picture until a very big production that includes many things such as camera, microphone, even a computer for adding the effects or additional sounds to the movie. Lady Bird (2017) is one of the greatest movies according to the writer, it has a unique aspect from the main character, Christine McPherson, a teenager who lives in Sacramento, U.S. Christine does not want people to call her by her name, but Lady Bird instead. The fact that Christine eventually gives up on making her life up and trying to live her life normally as she should, interests the writer to discuss Christine’s character development. The writer thinks about what Christine McPherson did in the movie is extraordinarily amazing. She changed from a girl that likes to make something up into a girl that accept everything that happens in her life.
EXPLORING FACTORS THAT CAUSE THE STUDENTS DEMOTIVATION IN LEARNING ENGLISH GRAMMAR AND ENGLISH WRITING STIBA IEC STUDENTS DURING COVID-19 PANDEMIC
Authors: Mettadewi Bella , Sitohang Mangangar , Sutrisno Bejo
Published: September 2023

This research aims to find out what are the demotivating factors experienced by STIBA IEC students while studying English grammar and English writing during a pandemic. In addition, researcher also finds out what are the main factors that make them demotivated and what suggestions do students want to convey so that online learning can take place well. A qualitative method is used in this research where the researcher interviewed 10 participants who came from semester 2 and semester 4 students from three different shift classes. As a result, there are 2 kinds of influencing factors, namely external factors and internal factors. External and internal factors are divided into several kinds. The implication of this is  readers can find out what factors are experienced by students and can get solutions to existing problems.
SYNTACTICAL ERROR ANALYSIS OF ABSTRACT THESIS BY UNDER GRADUATE STUDENTS OF SEKOLAH TINGGI BAHASA ASING (STIBA)-IEC BEKASI
Authors: Resmisari Diah , Rusman Putri Herdas Prayunas , Abdulloh Abdulloh , Sitepu Julyanta Br.Sitepu Br
Published: September 2023

This study is motivated by observation data, which shows that the majority of students believe  writing is difficult. To address this issue, the author conducts  research to determine the types of syntactical errors, the dominant type of syntactical errors, and the factors that influence the students' syntactical errors. The descriptive qualitative research method is used in this study. The data are drawn from abstract theses written by undergraduate students at Sekolah Tinggi Bahasa Asing (STIBA)-IEC Bekasi from 2017 to 2019. The research results have been   categorized according to James' (1998) classification of syntactical errors proposed in Error in Language Learning and Use. The analysis reveals the existence of five distinct types of syntactical errors, namely omission, addition, misformation, misordering, and blend. Among these, misformation emerges as the predominant type of syntactical error committed by the students. Furthermore, the occurrence of these syntactical errors is found to be influenced by both inter-lingual and intra-lingual factors.
A STUDY OF IDIOMATIC EXPRESSIONS IN THE TV MINISERIES “WANDA VISION” DIRECTED BY MATT SHAKMAN
Authors: Sarsono Sarsono , Zayyan Arianto Abid , Abdulloh Abdulloh , Suprihandani Eny
Published: September 2023

The Objectives of   the   research   are to find out the idiomatic expressions, to identify kinds of the idiomatic expressions, and find out the meaning of the idiomatic expressions found in the  Wanda Vision TV miniseries. Some phrases in   English language cannot be understood literally. A reader often needs to see the whole unit to understand the context of the phrases and these phrases are called idiom. The writer uses qualitative method to gain the objectives of the study. The researcher already collected the data from the script of the miniseries and categorized the idiomatic expression. The total number of idiom expressions is105. The categories found are 4 similes, 2 binomials, 5 proverbs, 9 clichés, and 85 fixed statements.  And each idiomatic expressions  meaning could be defined. The conclusion from the data gathered based on the 105 idiomatic expressions found in the Wanda Vision TV miniseries is fixed statement idiomatic expressions frequently used
Analysis of the economic feasibility of using the concept of the autonomous navigation system in the port
Authors: Дергилев В.А. , Жук С.С. , Аванесова Т.П.
Published: September 2023

В данной статье представлен сравнительный анализ экономической целесообразности использования модернизированных судов наряду с новыми морскими автономными надводными судами (МАНС) в условиях нестабильной мировой экономики. Определены основные проблемы эскортирования судов в стеснённых условиях плавания, подхода, швартовки к причалу, при ограниченной пропускной способности портов и диспетчеризации в узкостях. Противоречия между прогнозируемой разницей стоимости и эффективностью применением концепции системы автономного судовождения в порту (БЭС-СП) на базе технологии двух опорных точек и МАНС способствуют постановке цели данного исследования. Рассмотренный с точки зрения двух парадигм вариант модернизации судов до четвертого уровня автономности посредством метода аналогии определил ряд проблем, в числе которых невозможность её полноценной реализации. Сделан вывод о том, что повышение уровня безопасности и автономности, а также исключение человеческого фактора, предполагают возможность использования азимутальных буксиров-автоматов в рамках концепции БЭС-СП, являющейся государственным заказом.

The article presents a comparative analysis of the economic feasibility of using modernized ships along with new maritime autonomous surface ships (MASS) in an unstable global economy. The main problems of escorting ships in narrows, approaches, when mooring to a berth and dispatching with limited port capacity and in congested waters are identified. The contradictions between the predicted cost difference and the effectiveness of applying the concept of the unmanned ship navigation system in the port based on the technology of two reference points and MASS helps to formulate the goal of this study. Considered from the point of view of the two paradigms, the option of upgrading ships to the fourth level of autonomy through the analogy method identified a number of problems, including the impossibility of its full implementation. It is concluded that increasing the level of safety and autonomy, as well as eliminating the human factor, involves using azimuthal automatic tugboats as a part of the concept of the unmanned ship navigation system in the port, which is a part of the state order.
Development of a turbine drive for manual pneumatic grinding tools of increased power
Authors: Кузнецов Ю.П. , Хрунков С.А. , Чуваков А.Б. , Погодин Р.А.
Published: September 2023

Статья посвящена решению задачи создания турбопривода для быстроходных ручных шлифовальных пневматических машин повышенной мощности. Основным элементом турбопривода является инновационная турбина, состоящая из двух радиальных ступеней, лопаточные венцы которых размещены на противоположных боковых поверхностях диска рабочего колеса. Со стороны подвода сжатого воздуха размещены сопловые лопатки центробежной реактивной турбины, со стороны выхода потока – рабочие лопатки центростремительной активной турбины. Промежуточный направляющий аппарат охватывает лопаточные венцы по периферии. В турбоприводе, предназначенном для относительно тихоходных машин, применена турбина с двумя ступенями давления. В состав турбопривода также входят регулятор частоты вращения и устройство автоматического торможения ротора. Испытания подтвердили соответствие мощности разработанных турбин рассчитанным целевым показателям. На базе разработанного турбопривода была спроектированамодельная линия прямых и угловых машин, предназначенная для выполнения широкого спектра шлифовальных работ.

The paper is devoted to solving the problem of creating a turbine drive for high-speed manual pneumatic grinding machines of increased power. The main element of the turbine drive is an innovative turbine consisting of two radial stages, the blade crowns of which are placed on opposite side surfaces of the impeller disk. The nozzle blades of a centrifugal jet turbine are located on the compressed air supply side, and the working blades of a centripetal active turbine are located on the flow outlet side. The fixed guide blades cover these blade crowns on the periphery. A second pressure stage has been added to the turbine drive designed for relatively slow-rotating machines. Turbine drive also includes a speed controller and an automatic rotor braking device. The tests confirmed the compliance of the power of the developed turbines with the calculated target indicators. Based on the developed turbine drive, a model line of straight and angular machines was designed to perform a wide range of grinding operations.
Prospects for the application of digital communication systems iot in ship traffic control systems
Authors: Фатеев А.Е. , Скварник И.С.
Published: September 2023

Системы управления движением судов (СУДС) оказывают большое влияние на безопасность и эффективность функционирования морского транспорта. Их важнейшим составным элементом является телекоммуникационная инфраструктура, обеспечивающая обмен данными между всеми участниками процесса мореплавания. На сегодняшний день в ее основе находятся устаревшие аналоговые технологи связи, которые тормозят развитие отечественной морской отрасли. Перспективным решением данной проблемы является применение технологии интернета вещей (IoT) в телекоммуникационной инфраструктуре системы управления движением судов. Данная технология находит широкое применение в различных областях мировой промышленности и экономики. Благодаря преимуществам, связанным со стоимостью, автономностью и энергоэффективностью, IoT-устройства способны обеспечить решение ряда существующих проблем. В работе предложена новая телекоммуникационная инфраструктура СУДС Владивосток, на основе использования технологии LPWAN-сетей. Определены основные ее параметры, а также произведен расчет зоны ее покрытия на основе модели Лонгли-Райса. По результатам расчетов сделан вывод об эффективности применения технологии IoT для совершенствования телекоммуникационной инфраструктуры СУДС.

Vessel traffic management systems (VTMS) have a major impact on the safety and efficiency of maritime transport. Their most important component is the telecommunications infrastructure, which ensures the exchange of data between all participants in the navigation process. Today, it is based on outdated analog communication technologies that hinder the development of the domestic maritime industry. A promising solution to this problem is the use of the Internet of Things (IoT) technology in the telecommunications infrastructure of the vessel traffic management systems. This technology is widely used in various areas of the global industry and economy. With the advantages of cost, autonomy and energy efficiency, IoT-devices can provide a solution to a number of existing problems. The paper proposes a new telecommunications infrastructure for the VTMS Vladivostok, based on the use of LPWAN-network technology. Its main parameters are determined, and its coverage area is calculated based on the Longley-Rice model. Based on the results of the calculations, a conclusion was made about the effectiveness of the use of IoT technology to improve the telecommunications infrastructure of the VTMS.
Mathematical models in ship control systems testbench
Authors: Амбросовская Е.Б. , Амбросовский В.М. , Ромаев Д.В.
Published: September 2023

Работа посвящена роли математических моделей в отладочных стендах для судовых систем управления, то есть таких программно-аппаратных комплексов, которые позволяют имитировать все интерфейсные сигналы – как аналоговые и дискретные, так цифровые, и отладить по возможности основные алгоритмы управления, максимально сократить время на отладку системы на борту судна. Рассмотрены особенности стендов для систем управления движением и маневрированием (на примере системы управления курсом судна и системы управления динамическим позиционированием) и для систем управления техническими средствами. Дана классификация таких стендов, указан состав необходимых математических моделей. Отмечена важность моделирования различных отказов и сбоев, в том числе динамических. Приведены математические модели движения судна для стендов системы управления курсом судна и системы управления динамическим позиционированием в общем виде, рассмотрены требуемые свойства для различных задач. Проанализированы свойства математических моделей, предложенных международными стандартами для отладки управления по траектории. Предложены структуры математических моделей навигационных датчиков и приводов средств управления для стендов, а также описаны требования к моделированию электроэнергетической установки для систем управления динамическим позиционированием.

The work is devoted to the role of mathematical models in testbenches for ship control systems, that is, such software and hardware systems that allow you to simulate all interface signals - both analog and discrete, and digital, and debug, if possible, the main control algorithms, minimize the time for debugging the system on board the ship. The features of stands/testbenches for motion and maneuvering control systems (on the example of a vessel heading control system and a dynamic positioning control system), a technical means control system are considered. The classification of such testbenhces is given, the composition of the necessary mathematical models is discussed. The importance of modeling various faults and failures, including dynamic ones, is noted. Mathematical models of ship motion for the testbenches of the ship's heading control system and dynamic positioning control system in general form are given, the required properties for various tasks are considered. The properties of mathematical models proposed by international standards for debugging track control systems are analyzed. The structures of mathematical models of navigation sensors and actuators for testbenches are proposed, and the requirements for simulation an electric power plant for dynamic positioning control systems are described.
Navigation systems and methods for improving their reliability and accuracy to solve problems of collision avoidance of an autonomous ship at the stage of concept development
Authors: Астреин В.В. , Филатов В.И.
Published: September 2023

Успех реализации Морского автономного надводного судна (МАНС) заключается прежде всего в надежности, бесперебойности и работоспособности различных навигационных систем, применяемых в автономных судах. Эти требования распространяются прежде всего на интеллектуальные системы мониторинга, прогнозирования, планирования и принятия решений, которые образуют интеллектуальную Систему поддержки принятия решений (СППР) безопасности судовождения в режиме реального времени [1]. Одна из наиболее сложных задач решаемых СППР – это задача предупреждения столкновений судов (ЗПР/ПСС) . Сложность ( ЗПР/ПСС) заключается в проблеме многофакторного анализа, связей и противоречий интересов частей и системы в целом. На этапе разработки концепции автономного судна должна быть выполнена предварительная оценка навигационных систем по критериям надежности и точности для их установки на морских автономных и дистанционно управляемых надводных судах. Эта оценка должна включать список и всесторонний анализ навигационных систем, которые должны использоваться для решения ( ЗПР/ПСС). Кроме того, должны быть разработаны технологические методы повышения точности источников навигационной информации, схемы резервирования, комплексирования в случае отказа или угрозы изменения нормальных рабочих режимов навигационного оборудования МАНС для решения со стороны злоумышленников.

The success of the implementation of the Maritime Autonomous Surface Vessel (MANS) lies primarily in the reliability, un-interrupted operation and performance of various navigation systems used in autonomous ships. These requirements apply first of all to intelligent systems for monitoring, prediction, planning and decision-making, which form an intelligent decision support system (DSS) for the safety of navigation in real time mode [1]. One of the most difficult tasks solved by the DSS is the collision avoidance. The complexity of collision avoidance challenge lies in the problem of multivariate analysis, connections and contradictions between the interest’s parts of the system and such system itself. At the stage of developing the concept of an autonomous vessel, a preliminary assessment of navigation systems should be carried out according to the criteria of reliability and operability before their installation on marine autonomous and remotely controlled surface vessels. This assessment should include a list and a comprehensive analysis of the navigation systems to be used to solve the task of ship collision avoidance. Additionally technological methods should be developed to improve the accuracy of navigation information sources, redundancy schemes, and integration in a case of failure or a threat to change the normal operating modes of MANS navigation equipment to solve the task of ship collision avoidance by intruders.
Probabilistic analysis of continuous operation of passive detectors of moving noise sources
Authors: Егоров С.Б. , Горбачев Р.И.
Published: September 2023

В работе получены вероятностные характеристики ожидания и обнаружения сигнала для пассивных обнаружителей движущихся источников шумоизлучения. Вывод характеристик выполнен путем использования выбросовой вероятностной модели непрерывного контроля текущих значений индикаторных процессов – помехового и суммарного (сигнально-помехового) в индикаторном устройстве обнаружителя. Рассмотрены обнаружители двух видов: однопороговый (с порогом обнаружения только по уровню) и двухпороговый (с порогами обнаружения по уровню и длительности). Характеристики однопорогового обнаружителя определены в полном диапазоне значений вероятностей ложной тревоги и правильного обнаружения. Для двухпорогового обнаружителя характеристика ожидания определена в диапазоне значений вероятности ложной тревоги менее 0.1, характеристика обнаружения – в диапазоне значений вероятности правильного обнаружения более 0.9. Эти диапазоны достаточны как для определения порогов обнаружения по уровню и длительности по заданной величине вероятности ложной тревоги, так и для определения индикаторной аппаратной чувствительности обнаружителя по заданной величине вероятности правильного обнаружения. Анализом и сравнением характеристик обнаружителей двух видов показаны дополнительные возможности, возникающие с введением порога обнаружения по длительности.

The study presents probabilistic characteristics of signal waiting and detection for passive detectors of moving noise sources. These characteristics were obtained by employing an outlier-based probabilistic model of continuous monitoring of current values of indicator processes - noise and cumulative (signal-to-noise) in the indicator device of the detector. Detectors of two types were considered: single-threshold (with detection threshold based solely on level) and dual-threshold (with detection thresholds based on level and duration). The characteristics of the single-threshold detector are defined across the full range of false alarm probabilities and correct detection probabilities. For the dual-threshold detector, the waiting characteristic is defined within the range of values of false alarm less than 0.1 and detection characteristic - within the range of values of correct detection probability more than 0.9. These ranges are sufficient for both determining detection thresholds based on both level and duration for a given false alarm probability, as well as for determining the indicator hardware sensitivity of the detector for a given correct detection probability. Through analysis and comparison of the characteristics of the two types of detectors, additional capabilities arising from the introduction of a duration-based detection threshold are demonstrated.
Determination of hydrodynamic coefficients of the added masses and damping due to oscillations of the frame contour by computational methods
Authors: Альбаев Д.А. , Фахурдинов Р.Р.
Published: September 2023

Данная статья рассматривает определение коэффициентов присоединённых масс и демпфирования при вынужденных колебаниях шпангоутного контура с использованием численных методов. Составлена система уравнений, дополненная краевыми условиями. Выполняется численный расчёт задачи качки в пакете “OpenFOAM” с помощью динамической сетки “OverSet”, позволяющей выполнить расчёт сложного движения тела для однофазных и многофазных задач. Метод состоит в создании сетки с граничными условиями, имеющей несколько областей, и получении на её основе необходимого решения с помощью интерполяции. Представлены результаты расчёта гидродинамических коэффициентов с помощью численного метода. Согласованность численного моделирования с экспериментальными результатами подтверждает применимость предложенного метода в случае решения задачи качки. Также на основе методов численного моделирования произведены расчёты и представлены результаты присоединённых масс и демпфирования для горизонтальной, вертикальной и бортовой качки при различных отношениях ширины борта к осадке судна.

The article uses numerical methods to determine the coefficients of the attached masses and damping for forced oscillating motion of the frame contour. A system of equations supplemented by boundary conditions is composed. A numerical calculation of the oscillations is performed in the "OpenFOAM" package using the "OverSet" dynamic mesh, which makes it possible to calculate the complex motion of the object for single-phase and multi-phase problems. The essence of the method is to create a mesh with boundary conditions, which has several areas, and obtain the necessary solution using interpolation based on it. The results of calculating the hydrodynamic coefficients using the numerical method are presented. The consistency of the numerical simulation with the experimental results confirms the proposed method's applicability in solving the ship's oscillating motion problem. Also, based on numerical modeling methods, calculations were made. The results of calculating the attached mass and damping coefficients for rolling and pitching at various ratios of the side width to the ship's draft are shown.
Application of numerical methods for analysis of the methodology for designing the structural protection of ships with nuclear power plants
Authors: Коршунов В.А. , Мудрик Р.С. , Пономарев Д.А. , Родионов А.А.
Published: September 2023

В работе исследуются возможности инженерной методики проектирования конструктивной защиты судов с ядерной энергетической установкой с помощью численных моделей метода конечных элементов. Выполнен анализ инженерного подхода для расчета энергоемкости защитных конструкций. Выявлены допущения о локализации зоны разрушения и принятых механизмов отказа. Предложена корректировка методики, обеспечивающая снижение избыточных запасов. Расчетные модели МКЭ адаптированы к вычислению энергоемкости конструктивной защиты при ее деформировании и разрушении в процессе бортового тарана носовой оконечность другого судна. Назначаемые размеры конечных элементов и расчетные значения предельной деформации в моделях МКЭ определены на основе серии численных расчётов, верифицированных апробированными инженерными методиками. С помощью численных моделей выполнен анализ допущения о линейном суммировании независимо вычисленных энергий разрушения составляющих конструкций для определения полной энергии разрушения конструкций в составе корпуса.

The paper explores the possibilities of an engineering technique for designing the structural protection of ships with a nuclear power plant using numerical models of the finite element method. An analysis of the engineering approach for the calculation of energy absorption by protective structures is carried out. Assumptions about the localization of the destruction zone and the accepted failure mechanisms are revealed. An adjustment of the methodology is proposed, which ensures the reduction of excess stocks. FEM computational models are adapted to the calculation of the energy absorption of structural protection during its deformation and destruction during the onboard ramming of the bow of another vessel. The assigned sizes of finite elements and the calculated values of the limiting deformation in the FEM models are determined on the basis of a series of numerical calculations verified by proven engineering methods. With the help of numerical models, the analysis of the assumption about the linear summation of independently calculated fracture energies of constituent structures was performed to determine the total fracture energy of structures in the hull.
Calculation of vibration parameters of a structure with multistage multichannel damping
Authors: Бабанин Н.В. , Мелконян А.Л. , Николаев Д.А.
Published: September 2023

Работа посвящена разработке расчётного комплекса (модель, алгоритм и программа) для получения параметров совместной вибрации соосного многоопорного валопровода и корпуса судна при учете вращения гребных винтов, а также оценки взаимовлияния валов на параметры их вибрации. Разработана модель, включающая корпус судна и соосный валопровод, в виде совокупности трех квазиодномерных конечно-элементных конструкций. Алгоритм расчета построен на базе метода парциальных откликов в его дискретном варианте. Влияние вращения гребного винта учтено введением дополнительных моментов гироскопической природы. Действие этих моментов учитывалось модификацией инерционно-жесткостных характеристик каждой из квазиодномерных моделей валов. Для решения поставленной задачи были разработаны математическая модель и алгоритм расчёта параметров вибрации принятой модели. Для проведения расчётов параметров вибрации была создана программа «Соосность» и выполнена серия расчетов в задаче прикладного характера.

The work is devoted to the design of computational complex (model, algorithm and program) to obtain the vibration parameters of a coaxial multi-supported ship shafting, taking into account the rotation of propellers, as well as estimates of the mutual influence of the ship shafts on their vibration parameters. A model that includes a ship’s hull and a coaxial ship shafting represented by a set of three quasi-one dimensional finite-element structures was developed. The calculation algorithm is based on the discrete version of the partial responses method. The influence of the rotation of the propeller is compensated by applying additional moments of gyroscopic nature. Those moments, in turn, were taken into account by modifying of inertia-stiffness characteristics of each quasi-one-dimensional ship shafting models. The mathematical model and the computational algorithm for calculating the vibration parameters of the adopted model were developed to solve the given problem. The algorithm for calculating the vibration parameters of the adopted model was developed. To calculate the vibration parameters, the "Coaxiality" program was created and a series of calculations were performed in an applied problem.
Geometrically nonlinear analysis of resonant vibrations of the frame model of the superstructure during pitching
Authors: Шарков П.Н. , Миронов М.Ю.
Published: September 2023

Работа посвящена созданию комплекса вычислительных моделей гидродинамики и прочности, описывающих поведение маломерного научно-исследовательского судна (НИС), строящегося студенческим конструкторским бюро СПбГМТУ [1]-[3]. Рассматривается моделирование поведения легкой гибкой катерной надстройки из стеклопластика, представляющей собой пространственную сложную раму и предназначенную для размещения на ней массивного и жесткого яруса фотоэлектрических панелей. Расчетными для такой конструкции являются инерционные нагрузки при качке судна. Низкая конструкционная жесткость делает необходимым анализ колебаний конструкции в геометрически нелинейной постановке для выявления истинных амплитуд отклика в околорезонансной зоне, запасов прочности и жесткости, возможностей их повышения при использовании такелажа. В первом приближении анализируется поведение плоской рамы без расчалок и с расчалками для случая высокоамплитудного гармонического поворота опорной плоскости, имитирующего бортовую качку.

The work is devoted to the creation of a complex of computational models of hydrodynamics and strength describing the behavior of a small research vessel (NIS) under construction by the student design bureau of SPbGMTU [1]-[3]. Modeling of the behavior of a light flexible fiberglass boat superstructure, which is a spatial complex frame and designed to accommodate a massive and rigid tier of photovoltaic panels on it, is considered. The design for such a design is the inertial loads during the rolling of the vessel. Low structural rigidity makes it necessary to analyze the vibrations of the structure in a geometrically nonlinear formulation to identify the true response amplitudes in the near-resonance zone, strength and stiffness reserves, and the possibilities of increasing them when using rigging. In the first approximation, the behavior of a flat frame without braces and with braces is analyzed for the case of a high-amplitude harmonic rotation of the reference plane, simulating a side pitching. Analysis of resonant vibrations of the frame model of the superstructure during pitching
Method for evaluation of local loads based on their expansion in terms of an orthogonal set of functions
Authors: Филатов А.Р.
Published: September 2023

Объектами работы являются судовые корпусные конструкции. Цель работы состоит в решении обратной задачи строительной механики корабля – разработке метода определения местных нагрузок, действующих на корпусные конструкции, по значениям деформаций, полученным в их конечном числе точек. При разработке метода определения местных нагрузок применялся подход, основанный на их разложении по ортогональной системе двумерных вейвлет-функций Хаара. Для решения задач строительной механики и получения отклика конструкции на действие базисных нагрузок использовался метод конечных элементов. Выполнены тестовые расчёты перекрытия ледового пояса при трёх различных вариантах приложения на него нагрузки: равномерная и гидростатическая по всей наружной поверхности, а также равномерная по ограниченному пятну контакта. Минимальная погрешность разработанного метода по оценке интеграла местной нагрузки на тестовых задачах составила 1-3% в зависимости от варианта нагружения, размера выборки, размера базиса и амплитуды базисных функций.

The work objects are ship hull structures. The work goal consists in solving the inverse problem of the structural mechanics of ships that is development of a method for evaluating local loads acting on hull structures, according to the strain values obtained at finite number of points. When developing the method for evaluation of local loads, an approach was used based on local loads series expansion in the orthogonal set of two-dimensional Haar wavelets. The finite element method was used for solution of structural mechanics problems and obtaining the response of the structure to the action of basic loads. Test calculations of the ice belt grillage were performed for three different load cases: uniform and hydrostatic over the entire outer surface, as well as uniform over a limited contact patch. Minimum error of the developed method for evaluating the local load integral on test problems was equal to 1 to 3%, depending on the load case; sampling size, basis size and basis function amplitudes.
Analysis of the possibility of docking a vessel with a large overhang
Authors: Антоненко С.В. , Соколовский А.С. , Новиков В.В. , Чехранова Л.И.
Published: September 2023

В России завершается программа утилизации реакторных отсеков атомных подводных лодок и других списанных радиационно-опасных объектов, в том числе судов атомного технологического обслуживания (АТО). Эти объекты выгружаются на площадки долговременного хранения, где части корпусов, не обладающие опасной радиоактивностью, разделываются на лом, а отсеки, содержащие радиоактивные материалы, после соответствующей подготовки остаются на площадке долговременного хранения. Такие площадки созданы на Севере и на Дальнем Востоке. Выгрузка объектов производится на Севере с помощью судна-дока «Итарус», на Дальнем Востоке – с помощью транспортно-передаточного дока «Сакура». В ходе указанных работ возник вопрос о возможности выгрузки с помощью судна «Итарус» судна АТО длиной около 75 м при длине доковой камеры более 50 м. При этом свес носовой или кормовой оконечности составлял почти 1/3 длины судна. Для обоснования такой возможности (или доказательства невозможности) были выполнены расчёты общей продольной прочности, согласно которым имеется значительный запас прочности. Проработан вопрос удифферентовки дока с судном. Разработаны предложения по конструкции докового опорного устройства с учётом ограничения опорных реакций по условиям прочности.

Russia is completing a program for the disposal of reactor compartments of nuclear submarines and other decommissioned radiation-hazardous objects, including nuclear service vessels (ATO). These objects are unloaded to long-term storage sites, where parts of the hulls that do not have dangerous radioactivity are cut into scrap, and compartments containing radioactive materials, after appropriate preparation, remain at the long-term storage site. Such sites have been created in the North and the Far East. The objects are unloaded in the North with the help of the ship-dock "Itarus", in the Far East - with the help of the transport-transfer dock "Sakura". In the course of these works, the question arose about the possibility of unloading a nuclear service vessel with a length of about 75 m using the "Itarus" vessel with a dock chamber length of more than 50 m. At the same time, the overhang of the bow or stern end was almost 1/3 of the vessel's length. To substantiate this possibility (or prove the impossibility), calculations of the overall longitudinal strength were performed, according to which there is a significant margin of safety. The issue of trimming the dock with the ship has been worked out. Proposals have been developed for the design of the dock support device, taking into account the limitation of support reactions due to strength conditions.
Method of no-go area fencing lines planning in vessel traffic control systems
Authors: Васьков А.С. , Мироненко А.А.
Published: September 2023

В статье исследуется возможность использования основных навигационных параметров (пеленг и дистанция), а также их суммы, разности и параллельного индекса для формирования ограждающих опасности изолиний при планировании маршрута судна в условиях прибрежного плавания. Для этих целей приводится математическое обоснование применения комбинации пеленгов и дистанции, из которых вычисляются параллельные индексы и кривые второго порядка: окружности, эллипсы, гиперболы. Предлагается новый подход использования аппроксимирующих кривых в виде многополюсного эллипса для ограждения опасностей. Разработан метод ориентировки исходных расположений навигационных ориентиров под конфигурацию водного пути и маршрут судна на основе поворота и переноса систем координат, связанных с ориентирами. Предложен метод формирования навигационных параметров ограждающих изолиний в соответствии с конфигурацией и взаимным расположением узкости и линии заданного пути для контроля безопасного движения судна. Основные положения исследования подкрепляются графической интерпретацией, а приводимые выражения доведены до уровня непосредственного практического применения. Формализация предлагаемых методов и алгоритмов ограждения опасностей в автоматических навигационных комплексах или системах управления автономными судами позволит судоводителю на борту и управляющему дистанционно решать задачи обработки соответствующей навигационной информации в прибрежных и стеснённых районах плавания на качественно новом уровне в неразрывной связи с традиционными лоцманскими методами контроля.

The article discusses the possibility of using the main navigation parameters (bearing and distance), as well as their sum, difference, and parallel index, to form isolines enclosing no-go areas when planning a vessel's route in coastal navigation conditions. For this purpose, a mathematical justification is given for using a combination of bearings and distances, from which parallel indices and second-order curves are calculated: circles, ellipses, and hyperbolas. A new approach of using approximating curves in the form of a multipolar ellipse for fencing no-go areas is proposed. A method of positioning navigation landmarks adapted to the configuration of the waterway and the vessel's route, based on the rotation and transfer of coordinate systems of landmarks, is developed. The method of formation of navigation parameters of enclosing isolines in accordance with the configuration and relative location of the narrowness and the line of a given path to control the vessel's safe navigation is proposed. The main aspects of the study are illustrated graphically, and the expressions obtained are brought to the level of direct practical application. The formalization of the proposed no-go area fencing lines in the automatic navigation systems or autonomous ship control systems will help solve the problem of processing the navigation information in coastal navigation areas and narrows at a qualitatively new level along with the traditional pilot's control methods.
Safety Criteria in Ecotourism Activities: The Case of a Marine Salt Pan During the Covid-19 Pandemic
Authors: Ramos Jorge , Soraia
Published: September 2023

This study used the analytic hierarchy process (AHP) to examine the application of the main safety rules in ecotourism activities in a marine salt pan during the COVID-19 pandemic. The results suggest that, among the activities analyzed, the best way perceived to maintain social distance
was the guided tour activity, while hand hygiene was seen as the most important in the saline bath and in the combined activity. Mask was generally removed in activities involving immersion in water by tourists. These measures were crucial to ensure a sense of security and well-being both
for tourists and employees of the tourism and hospitality industry.
REKONSTRUKSI RUANG LINGKUP KEWENANGAN PRAPERADILAN DALAM SISTEM PERADILAN PIDANA INDONESIA
Authors: Wicaksana Abraham Gunawan
Published: September 2023

Pre-trial is part of the criminal justice system regulated in KUHAP which normatively regulates the authority of the local district court to investigate and decide whether the arrest and / or deprivation of liberty is legal or not, or the request of the suspect or his family or other parties or representatives of the suspect; whether termination of investigation or prosecution is lawful upon request; as well as requests for compensation or rehabilitation submitted by the suspect or his family or other parties or attorneys whose cases are referred to the local district court for compliance with law and trial, but in fact there are pretrial regulations other than KUHAP which result in the expansion of pretrial authority, this article uses  juridical normatives method, with statute approach and conceptual approach, for analyst some regulation of law about pretrial hearing for find new construct about  limitation pretrial hearing in criminal justice system.

Keywords : pretrial hearing, suspect, investigation, authority