bluuebunny/crossref_metadata_2025 huggingface dataset:
Aplicación móvil para fortalecer las habilidades cognitivas de las matemáticas básicas en los estudiantes con TDAH
Authors: López Díaz Leyder Hernán , Herrera Gómez Yiseth Paola , Guavita Moya Nilton , Polanco Contreras Ramiro Hernan , Bernal Tambo Jose Eliud
Published: September 2024

La enseñanza de las matemáticas básicas puede resultar desafiante en estudiantes que presentan trastornos de déficit de atención e hiperactividad (TDAH). En respuesta a esta problemática, los semilleros INTERMATSI de la escuela ECBTI y el semillero PHYLOS de la escuela ECSAH, proponen desarrollar una aplicación móvil innovadora, que sirva de apoyo. La presente investigacion aborda las dificultades de aprendizaje asociadas al TDAH y proporciona un entorno de aprendizaje adaptado a las necesidades. La aplicación móvil se basará en principios pedagógicos y estrategias específicas para el TDAH. Se enfocará en la interactividad y la gamificación para motivar a los estudiantes frente a las matemáticas básicas. Además, se implementarán estrategias de atención, como instrucciones claras y breves, división de tareas en pasos más pequeños y ejercicios que promuevan la práctica repetitiva y la atención sostenida. Para evaluar la efectividad de la aplicación, se realizará un estudio piloto. Los resultados obtenidos permitirán determinar el impacto de la aplicación en el rendimiento académico, la atención sostenida de los estudiantes.
Diseño de un sistema de acoplamiento por medio de fresadorora CNC para la medición conductividad eléctrica en soluciones acuosas
Authors: Bustos Miranda Joan Sebastian , Martinez Gomez Jeison Stiven
Published: September 2024

Este working Paper presenta las simulaciones del diseño y mecanizado por fresadora CNC de un prototipo de celda potenciomérica para la medición de conductividad eléctrica en soluciones acuosas, con aplicación a la agricultura de precisión. El prototipo integra un sensor de conductividad eléctrica, una termocupla y agitador mecánico. Resaltando puntos claves, como la necesidad de realizar dos perforaciones laterales para la limpieza de la celda, indicaciones del grosor del contenedor que permite un empaque como sello, el diseño curvo de las esquinas y la proyección de mejora con aletas de soporte.
Probióticos en la alimentación porcina, los potenciales beneficios y aplicaciones en la porcicultura colombiana
Authors: Castaño Muñoz Jhon Never
Published: September 2024

Los probióticos son utilizados en la alimentación por sus beneficios en el mejoramiento de la flora intestinal y en la asimilación de nutrientes. En el caso de la alimentación animal se han realizado estudios que evidencian beneficios potenciales en los distintos tipos de ganadería mediante la inclusión o aplicación de probióticos en la alimentación. El presente estudio tiene como objetivo analizar las aplicaciones de probióticos en la alimentación porcina y los potenciales beneficios que esto conllevaría en el contexto nacional. Se observa la necesidad de un documento que analice de manera sistemática el uso de probióticos como suplemento nutricional para mejorar la alimentación porcícola. Para este propósito, se emplearon enfoques de investigación documental en la base de datos Scopus, extrayendo y analizando los datos e información pertinente de estudios relevantes realizados en la última década y los resultados obtenidos. Se obtuvo como resultado un documento actualizado de las diferentes aplicaciones de los probióticos en la alimentación porcícola y los beneficios del uso de estos, mediante el análisis de una revisión bibliográfica utilizando ecuaciones de búsqueda. Como resultado, en esta monografía, abordaremos las ventajas fisiológicas, inmunológicas y clínicas de los probióticos en varias fases del ciclo de vida del cerdo. Los probióticos, en particular, mejoran el rendimiento de las cerdas durante el embarazo, el parto y la lactancia; pueden mejorar los parámetros inmunohistológicos y las defensas en la fase de crecimiento; pueden influir en la calidad de la carne en la fase de acabado; y pueden ayudar en la reducción de contaminantes ambientales.
Metodología para medición, prevención y emisión de alertas tempranas en proyectos de tecnología incorporando la Gestión de TI a través de un entorno virtual de aprendizaje
Authors: Salazar Sanabria Jesús Fernando , Cárdenas Cárdenas Roberto Mauricio
Published: September 2024

Este artículo presenta una metodología que incorpora la Gestión de Tecnología de la Información (TI) en un entorno virtual de aprendizaje para mejorar el desempeño del equipo en tecnológicos. La metodología se basa en la identificación de ajustes en los requerimientos, permitiendo detectar desviaciones y emitir alertas tempranas. La combinación de visiones y metodologías de trabajo debe ser adaptable y flexible, incluyendo marcos de trabajo alternativos como Prince2 y Scrum. La utilización de métricas de nivel de ajuste de requerimientos permite detectar desviaciones tempranas y prevenirlas, siendo una herramienta clave para el éxito en proyectos de tecnología.
Aplicación de la ciencia de datos en la toma de decisiones empresariales en el Sector RETAIL Colombiano
Authors: Lasso Vivas Victor Andrés
Published: September 2024

En un entorno altamente competitivo, cambiante y saturado, los minoristas del país se enfrentan al desafío de obtener ventajas y tomar medidas para evitar pérdidas o incluso luchar contra la desaparición. Esta investigación tiene como objetivo demostrar cómo las capacidades de la ciencia de datos y las nuevas herramientas de análisis de datos contribuyen a la toma de decisiones informadas, mejora de la eficiencia y rentabilidad de los negocios minoristas a partir del aprovechamiento de los datos generados en sus operaciones diarias. Está investigación se construye a partir de una revisión sistemática de la literatura donde se examinan los elementos metodológicos, técnicos y tecnológicos que definen la ciencia de datos. Se discuten las ventajas y posibilidades que la aplicación de la ciencia de datos puede ofrecer al sector Retail en términos de toma de decisiones estratégicas y se considerarán posibles proyecciones y se evaluará el impacto potencial de la ciencia de datos en el futuro del sector Retail. Los resultados de esta investigación brindan información valiosa sobre el sector minorista y las dificultades que enfrenta en la toma de decisiones. Además, se exploran las tendencias actuales en la aplicación de la ciencia de datos para la toma de decisiones en distintas áreas incluyendo el sector minorista, analizando las tácticas, tecnologías y resultados de estas aplicaciones. Finalmente, se logra identificar y destacar las ventajas, oportunidades y beneficios que surgen de la aplicación de la ciencia de datos en la toma de decisiones en el sector minorista.
Plan de gestión vocacional para los jóvenes rúales de Yacopí Cundinamarca: un enfoque desde la gerencia de proyectos
Authors: Alvarez Vega Yineth Daniela
Published: September 2024

El propósito de este artículo fue crear un plan de gestión vocacional profesional para los jóvenes rurales de Yacopí Cundinamarca, teniendo como problemática la incorrecta asociación de estrategias en brindar apoyo vocacional a los jóvenes rurales en el acceso a la educación superior, en el desarrollo metodológico, se realizaron tres etapas, en un primer momento se estableció el diagnóstico de la gestión vocacional profesional, mediante una revisión documental y recolección de información directa por encuestas, en un segundo momento, se analizó las falencias en proyección de una correlación causa efecto mediante el diagrama Pareto, la matriz de prioridades y el juicio de expertos, en un tercer momento se realizó un análisis técnico – económico, mediante el uso de costo beneficio y criterios de selección. Los resultados obtenidos fueron: En el diagnostico se evidencio dificultades financieras, académicas y sociales, además el desconocimiento de las metodologías de estudio, escasez de centros formativos, limitaciones territoriales y falencias en estrategias municipales. Posteriormente se identificaron las alternativas de solución, una financiación parcial a los estudiantes promedio, motivación y emprendimiento juvenil y la conformación de la oficina psico-vocacional como una de las estrategias con mayor grado de cumplimiento según lineamientos técnico-económicos. Por último, en los resultados, se valoró las alternativas de solución mediante las herramientas de costo beneficio y criterios de selección. Finalmente se concluye que el plan de gestión produce un incremento del 6% en los índices de accesibilidad a la educación superior de los jóvenes rurales, mejorando el desarrollo económico y social del municipio.
Los aportes jurisprudenciales del derecho a la salud. Una visión comparada
Authors: Argaéz De Los Santos Jesús Manuel
Published: September 2024

El presente trabajo tiene como objetivo llevar a cabo el estudio sobre los avances del derecho a la salud que la Suprema Corte ha hecho sobre nuevos aportes jurisprudenciales, comparados con los criterios que también han sido emitidos por análogos tribunales constitucionales como son el tribunal constitucional Italiano y el Alemán, los cuales se han pronunciado en temas de derecho a la salud individual y colectivo, así la visión de este estudio tiene dos efectos, en un sentido, la comparativa de la forma en como los tribunales constitucionales europeos más avanzados se han pronunciado sobre los temas de salud, y por otro lado, también ver como México se ha puesto a la vanguardia en la defensa de los derechos de la salud a través de los aportes jurisprudenciales en los cuales la Suprema Corte de Justicia se ha pronunciado.
Diseño e Implementación de Filtros y Controladores PID para Estabilización de Sistemas Dinámicos
Authors: Villada García Sebastián
Published: September 2024

En este trabajo, se aborda el diseño y la implementación de filtros digitales y controladores PID discretos para estabilizar una función de transferencia dada. Utilizando la herramienta c2d de Matlab, se discretiza la función de transferencia original, y se observa que la planta no alcanza el valor deseado de 1. Se implementa un filtro digital multiplicando por un factor de escala. Posteriormente, se emplea el método del lugar geométrico de las raíces para analizar el comportamiento de la planta realimentada, revelando una respuesta lenta al escalón. Luego, se aplica el método de Ziegler-Nichols para sintonizar un controlador PID. Los parámetros resultantes generan una respuesta con un ligero sobre impulso. Se utiliza la herramienta PID Tuner para ajustar los parámetros PID, logrando una respuesta más suavizada y rápida estabilización. El documento aborda cada fase del diseño, desde la discretización inicial hasta la sintonización y validación del controlador PID.
Traditional Islam and Modern Atheism According To Mustafa Sabri’s Thought
Authors: Surawan  , Awang Sarimah
Published: September 2024

Mustafa Sabri (1869-1954) was the last Islamic sheikh of the Ottoman Caliphate who adhered to the traditional madhhab, as depicted in his work entitled Mauqif al-'Aql wa al-'Ilm wa al-'Aalam min Rabb al-'Alamin wa Ibadihi al-Mursalin. The central issue in Sabri's work revolves around countering the secularization of the Islamic world, particularly the efforts led by Mustafa Kemal Pasha. This research adopts a library research approach, focusing exclusively on analyzing Sabri's Mauqif al-'Aql wa al-'Ilm wa al-'Aalam min Rabb al-'Alamin wa Ibadihi al-Mursalin as the primary source. The findings of this research reveal that, according to Sabri, religion is the most fundamental principle, one that is unchangeable by anyone. Sabri clearly distinguishes between faith and deeds, emphasizing that Islam is primarily a religion of faith rather than merely one of deeds. This is because, in Sabri's view, a person's faith determines whether their deeds are accepted in religion.
A National Physician Survey Examining Switching From Sulfonylureas or Insulin to Newer Diabetes Medications
Authors: Pilla Scott J. , Wang Isabelle J. , Tang Olive , Schoenborn Nancy L. , Boyd Cynthia M. , Bancks Michael P. , Mathioudakis Nestoras N. , Maruthur Nisa M.
Published: September 2024

This study was a national survey of U.S. physicians in general medicine, geriatrics, or endocrinology who were asked what medication change they would make for adults with type 2 diabetes taking sulfonylureas or insulin with an A1C below their individualized goal. Responding physicians switched the hypoglycemia-causing medication a median of 4 times (interquartile range 1–9) among 27 opportunities and selected dipeptidyl peptidase 4 inhibitors most often when switching. Sodium–glucose cotransporter 2 inhibitors were selected less frequently, including when indicated for cardiovascular and renal comorbidities, but significantly more often among physicians caring for a greater proportion of patients with private health insurance. Overcoming barriers to switching hypoglycemia-causing medications may help to reduce rates of hypoglycemia while targeting cardiovascular and renal comorbidities.
Cardio-facio-cutaneous Syndrome with Severe Inflammatory Cutaneous Lesions: Dramatic Effect of Dupilumab
Authors: Altandi Sara A. , Apoil Pol A. , Mazereeuw-Hautier Juliette , Severino-Freire Maella
Published: September 2024

Abstract is missing (Short communication)
Utilizing Idle Time for Job Clusters Reduces Inventory and Total Job Completion Time for Single Machine Scheduling
Authors: A* Kathirvel
Published: September 2024

The algorithm The algorithm must decide how much to increase or modify the completion times of each job because the completion times in the original schedule are the earliest potential completion times. Since each cluster's jobs are all shifted by the same amount, the goal of this research can be satisfied by computing the best shift for each cluster. By inserting idle time for job clusters, inventory and overall completion time for single machine scheduling are minimized. According to the results of the numerical experiment, if idle time is properly included before jobs, Earliness and Tardiness cost values can be greatly decreased. Finding the best schedule to minimize the fines for being early or late is the issue under consideration here. The article suggests a method for fitting idle time in while still meeting deadlines. The suggested algorithm reduces the penalty by inserting idle time up until the point where further reduction of the objective function is not possible.
Submanifolds, Fibre Bundles, and Cofibrations in Noncommutative Differential Geometry
Authors:   , Blake James
Published: September 2024

This is a thesis in noncommutative differential geometry. Equipping algebras with differential calculi, we propose noncommutative differential equivalents of some concepts from topology: submanifolds and fibre bundles. Further, we consider some ideas towards noncommutative versions of cofibrations and retracts. We also give a new diagrammatic calculus on Temperley-Lieb algebras.
IMPLEMENTASI SKEMA PEMBIAYAAN PADA HAK CIPTA DALAM EKONOMI KREATIF DIHUBUNGKAN DENGAN ASAS ALTER EGO, TEORI PENGHARGAAN DAN TEORI HASIL KERJA
Authors: Khoirunisa Qorina , Mayana Ranti Fauza , Muchtar Helitha Novianty
Published: September 2024

Peraturan Pemerintah (PP) Nomor 24 Tahun 2022 tentang Pelaksanaan UU Ekraf menyebutkan bahwa terdapat skema pembiayaan yang diberikan kepada para pelaku ekonomi kreatif berbasiskan kekayaan intelektual (KI) termasuk didalamnyamelalui pemanfaatan Hak Cipta yang bernilai ekonomi. Skema pembiayaan dalam konteksekonomi kreatif dapat mencakup berbagaipendekatan seperti pembiayaan modal ventura, pembiayaan kredit usaha rakyat, pembiayaanmikro, pembiayaan berbasis risiko (PembiayaanModal Kerja dan Investasi). Sebuah ciptaanmemiliki cerminan dari penciptanya (alter ego) dan hal ini tidak dapat dialihkan karna termasuk sebagai hak moral yang melekat mutlak pada penciptanya. Jika skema pembiayaan menjadikankarya dari pencipta sebagai objek jaminan, makaperlu untuk diteliti apakah dalam terjadinyawanprestasi, objek tersebut akan sepenuhnyaberpindah tangan kepada kreditur ataukah hanyasebatas sampai kreditur memenuhi kewajibannya. Proses labour yang membuat hak kekayaan intelektual pada pencipta atau penemu hingga menciptakan suatu karya. Maka sejauh mana asas alter ego, teori reward dan teori labour dapat diimplementasikan dalam skema pembiayaan pada ekonomi kreatif. Metode penelitian yang digunakan oleh penulis dalam riset ini adalah yuridis normatif. Dari penelitian ini didapatkan kesimpulan pertama, tiap hak cipta dapat memiliki nilai yang sangat berbeda karena faktor alter ego. maka semestinyadiberi keleluasaan bagi pencipta untuk dapat bebasmemilih dalam mendapatkan fasilitaspembiayaan,bukan hanya dalam sistem kreditdimana objek ciptaan dapat terancam dialihkan jika pencipta berpotensi gagal bayar. Kedua, Pemenuhan teori reward dalam konteks ekonomiuntuk hak cipta belum sepenuhnya terlaksana. Salah satunya karena pilihan terbatas pendanaanyang dapat diberikan kepada pencipta hanyadalam bentuk kredit. Pemberian reward kepadapencipta masih hanya sebatas konsep teoritis dan tertulis dalam peraturan, namun belum dapatdilaksanakan secara menyeluruh dengan benar-benar menghargai pencipta.
PERTANGGUNG JAWABAN PEJABAT PEMBUAT AKTA OTENTIK ATAU PEJABAT UMUM TERKAIT JUAL BELI TANAH YANG SUDAH ADA PENETAPAN LOKASI PENGADAAN TANAH
Authors: Handayani Marini Tri , Gultom Elisatris , Baraba Badar
Published: September 2024

The legal relationship of Land Sale and Purchase in relation to land acquisition for public purposes, and the role and responsibilities undertaken by a Notary Public or Public Official, become highly significant. This is because the Notary Public bears the responsibility to ensure that the land being bought and sold is transferred in accordance with the prevailing legal regulations. This study aims to determine the Accountability of the Notary Public or Public Official regarding the implementation of Land Sale and Purchase that has a designated Land Acquisition location, and the Legal Certainty Aspect of Authentic Deeds from Land Sale and Purchase Created by the Notary Public or Public Official in relation to Land Sale and Purchase that has a designated Land Acquisition location. The research method employed is normative juridical, focusing on literature review, particularly analyzing the applicable legal provisions. The research is descriptive-analytical in nature, aiming to comprehensively depict the state of an object in a systematic manner. The research is carried out in two stages: Field Research and Library Research, with the goal of obtaining primary, secondary, and tertiary legal sources. The research findings indicate that the sale and purchase of land rights by a Public Official, who oversees the transfer process of an object designated as land for development for public purposes, results in the improper receipt of compensation costs by the wrong party. In this regard, the Notary Public or Public Official, in carrying out their duties, must adhere to legal regulations, exercise prudence, and avoid favoring any party in order to prevent any party from being disadvantaged in the process of transferring land rights that they have executed
WORKING WIFE'S NAFKAH FAMILY LAW PERSPECTIVE INDONESIAN ISLAM
Authors: Nelli Jumni
Published: September 2024

This research aims to analyze the income position of working wives in Islamic family law in Indonesia. In classical jurisprudence, the husband has the obligation to pay his wife's maintenance, based on the rules of separation of assets in marriage. Meanwhile in Indonesia, maintenance is determined by the husband, with the implementation of joint property. This proof was carried out by examining books related to this study. Qualitative descriptive analysis was carried out after complete data was obtained. The results of this research explain that there is no text that expressly prohibits wives from working and there is no text that explicitly states that wives must work with their husband's permission. In classical jurisprudence, a wife's income from work is the husband's obligation, as is the case in Indonesia. However, it is not in line with the implementation of joint property, so it brings ambiguous legal treatment. The implementation of joint property in marriage has an impact on the implementation of all obligations in the household being carried out jointly, including the obligation to fulfill maintenance.
ANALYSIS OF ARTICLE 176 OF LAW NO. 10 OF 2016 REGARDING FILLING OF VACANCY POSITIONS OF DEPUTY REGIONAL HEAD
Authors: Hendri. K Hendri. K , Fikriana Askana
Published: September 2024

Article 176 paragraphs (1) and (2) of Law No. 10/2016 regulates the mechanism for filling vacancies of deputy governors, deputy regents, and deputy mayors, but in practice there are many delays in filling vacancies of deputy regional head positions. In fact, in some regions there are vacancies until the term of office of the deputy head of the region expires. This research aims to: (1). Analyze the mechanism for filling vacancies of deputy regional heads, (2). Analyze why there is a delay in filling the vacancy of the position of deputy regional head, (3) Offer a legal solution to anticipate the delay in the process of replacing the deputy regional head. Based on how to process data, this research is included in qualitative research. This research is not to find how many vacant deputy regional heads there are in Indonesia. This research also does not use statistical data processing to draw a conclusion. This research is a library research. The type of data in this research is secondary data consisting of primary legal materials and secondary legal materials. The mechanism for filling the vacancy of the regional head by election by the provincial DPRD or regency/city DPRD is based on a proposal from the supporting political party or a coalition of political parties. In practice, it is difficult for the supporting parties to agree to appoint a replacement, and each political party has an interest in making a candidate from the party or candidate they support as deputy regional head. The solution is the need for additional articles in Law No. 10/2016 aimed at anticipating if a political party or coalition of political parties fails to propose two replacement candidates.Keywords: filling positions, deputy regional head.
IMPLEMENTATION OF COMPENSATION FOR LOSS OF OFFICIAL VEHICLES IN ROKAN HILIR DISTRICT
Authors: Syahri Alfi , Ardiansah Ardiansah , Kadaryanto Bagio
Published: September 2024

Article 7 of Government Regulation Number 38 of 2016 concerning Procedures for Compensation Claims for State/Regional Losses Against Non-Treasurer Civil Servants or Other Officials, states that: "Based on the verification results report as intended in Article 5 paragraph (3), the State/Regional Loss Settlement Official must resolve State/Regional Losses by carrying out Compensation Claims." However, in the Rokan Hilir Regency government environment, the implementation is not yet underway because the demand for regional compensation for 4 non-Treasurer Civil Servants who lost two-wheeled official vehicles has not been implemented. The aim of this research is to analyze the implementation of compensation for loss of official vehicles in Rokan Hilir Regency, to analyze the obstacles and efforts. This type of research is sociological/empirical legal research. The results of the research show that the implementation of compensation for loss of official vehicles in Rokan Hilir Regency based on Government Regulation Number 38 of 2016 concerning Procedures for Claiming State/Regional Compensation Against Non-Treasurer Civil Servants or Other Officials has not been implemented in accordance with applicable legal provisions. This was proven by 4 non-treasurer civil servants who lost their two-wheeled official vehicles, causing regional financial losses, but their demands for regional compensation for losses have not yet been implemented.Keywords: Official Vehicles, Losses, Claims
Revisiting Brown and Levinson's Theory of Politeness
Authors: Fathi Said
Published: September 2024

This paper aims at revisiting Brown & Levinson framework in order to reduce the total number of positive politeness strategies from fifteen to seven high order Pos Pol strategies, and the number of negative politeness from ten to five high order Neg Pol strategies. This reanalysis ultimately builds up a self-consistent and coherent picture of polite usage that is intuitively satisfactory and economical. We end up with a general frame of reference which presents an organized analysis and theory of politeness, the main point of which is that it purports to be a general explanation of the particular phenomenon of disparity of usage and universality of use of politeness.
EXPLORING THE NEXUS BETWEEN SERVICE QUALITY, PATIENT SATISFACTION, AND RECOMMENDATION INTENTIONS IN FAITH-BASED HOSPITAL SETTINGS
Authors: Inaray Ayu Christa Pratiwi , Soewignyo Fanny , Sumanti Elvis R , Mandagi Deske W
Published: September 2024

More research is needed, particularly examining the connection between service quality and patient happiness in the setting of faith-based hospitals. This study seeks to fill this empirical void by investigating the correlation between service quality, patient satisfaction, and the intention to recommend a faith-based private hospital. An empirical study was carried out from October to November 2022, with a sample of 200 participants who underwent medical treatment at religiously affiliated facilities in Manado, North Sulawesi, Indonesia. The quantitative data were examined using structural equation modelling (SEM) using SmartPLS version 3.2. The results suggest that the quality of healthcare services has a favourable impact on consumer satisfaction. The intention to promote healthcare services is strongly influenced by patient satisfaction. Moreover, patient satisfaction completely mediates the association between healthcare service quality and recommendation intention. Furthermore, the study highlights reliability as the primary determinant in forecasting the quality of healthcare services. The findings enhance comprehension of the dynamics within faith-based hospital settings, guiding strategic initiatives to enhance healthcare delivery and patient outcomes.
THE ROLE OF HOLISTIC OWNER INVOLVEMENT AS A STRATEGY TO IMPROVE FINANCIAL PERFORMANCE
Authors: Kasmawati Kasmawati , Fitrio Tomy
Published: September 2024

The objective of this study is to examine the impact of liquidity, financial leverage, and company size on financial performance, with the moderation of holistic owner engagement in LQ45 enterprises. The study utilizes secondary data obtained from LQ45 firms that are publicly traded on the Indonesia Stock Exchange from 2020 to 2023. The data were subjected to panel data regression analysis. The findings suggest that liquidity, financial leverage, business size, and holistic owner participation all have an impact on financial success. In addition, the level of owner engagement has a moderating effect on the impact of liquidity, financial leverage, and firm size on financial performance. This study suggests that adopting a comprehensive approach to owner involvement can be an effective strategy for enhancing the financial performance of companies that are listed on the Indonesia Stock Exchange. Previous empirical research has yet to examine the impact of comprehensive owner engagement as a moderator on enhancing financial success. According to the findings, a successful approach to enhancing financial performance is to have comprehensive owner engagement in the organization.
Задача о длине движущегося тела. Две линейки
Authors: Плясовских Александр
Published: September 2024

Приведена задача о длине движущегося тела, которую необходимо решить с помощью формул СТО, представленных в работах Эйнштейна. Задача войдет в сборник задач по физике для студентов технических вузов.
The Effect of Financial and Macroeconomic Performance on Stock Value in Companies in the Restaurant, Hotel and Tourism Sub-Sector Companies Listed on the IDX During the Covid-19 Pandemic
Authors: Amalia Rizky , Arnita Vina
Published: September 2024

This research aimed to determine the influence of return on equity, earnings per share, debt to equity ratio, inflation, exchange rate, and interest rate both partially and simultaneously on stock value in the Restaurant, Hotel, and Tourism Sub-Sector Companies Listed on the Indonesia Stock Exchange during the Covid-19 Pandemic. The population of this research consisted of 35 companies, with a sample of 26 companies. The analysis technique used panel data regression with the Eviews 9.0 application. The regression model used was the Random Effect Model (REM). The data used were from the first to the fourth quarter of 2020 to 2021 and the first quarter of 2022. The results of the research showed that only the earnings per share variable had a partially positive and significant effect on the stock value of the Restaurant, Hotel, and Tourism Sub-Sector Companies listed on the Indonesia Stock Exchange during the Covid-19 Pandemic. Meanwhile, the variables of return on equity, debt to equity ratio, inflation, exchange rate, and interest rate did not have a significant effect. Simultaneously, all variables of return on equity, earnings per share, debt to equity ratio, inflation, exchange rate, and interest rate had a positive and significant effect on stock prices. The variables of return on equity, earnings per share, debt to equity ratio, inflation, exchange rate, and interest rate contributed only 8.97% to the formation of stock prices and had a weak relationship with stock prices.
Methodological approach to transport logistics network analysis and design
Authors: Lazarev Vladimir Anatol'evich
Published: September 2024

The concept and methodology of calculating the parameters of a transport logistics network are considered as a phenomenon in modern logistics that expands the concept of a “logistics chain” from the level of interaction between two organizations to the level of intraregional and interregional interaction of industrial groups within a regional transport network. An example of this is the parallel commodity flows between Asia and Europe through the Suez Canal, through the Cape of Good Hope and through the Northern Sea Route. The answer is given to the question why logistics flows simultaneously exist on parallel routes at different levels of transportation costs, while it would be logical to assume that the logistics flow should focus onto be on the least expensive path. A mathematical apparatus is proposed for solving the problem of the distribution of logistics flows within a transport logistics network, presented in the form of an oriented graph, and determining the parameters of each segment of an established transport logistics network for the movement of material resources based on the relationship of these parameters. The proposed mathematical apparatus makes it possible to establish the relationship between the four main characteristics of a logistics route – cost, speed, safety and service based on their overall impact on the costs associated with transportation along this route. The given calculation method allows us to estimate the change in material flows along different routes when changing the material characteristics of routes – cost, speed, safety.
Plotting water flow rates in small watercourses by means of an above-water unmanned vehicle in order to find the source of pollutant discharges
Authors: Naumenko Nikolai Olegovich , Shiryaeva Margarita Aleksandrovna , Pilipenko Tatiana Viktorovna
Published: September 2024

The methodology of measuring flow velocities and constructing water consumption curves in waterways in order to find the source of pollutant discharges by the surface unmanned vehicle (unmanned craft – UC) is proposed. The research was carried out on the Pekhorka River in the Moscow region in August-September 2023. The following software and equipment were used: Google Earth Pro, Microsoft Excel, an in-house developed surface drone, a Garmin Striker Cast GPS echo sounder, a water flow sensor based on the Arduino UNO platform with customised enhancements (tail feathering and a built-in plug-in for current velocity determination). Fixation of exceedance of maximum permissible concentrations (MPC) of pollutants in a watershead indicates a violation has occurred. Due to the high degree of water exchange in waterways, the presence of a water sample with exceeded MPC values does not guarantee the detection of a violator. Particularly, if a water consumer is not in the supervision authorities' database, it becomes almost impossible to confirm his guilt without a comprehensive evidence base. If there is a wide network of hydrological monitoring on streams, the issue in the evidence base would be exhaustive, but dependent on the length of the river, frequent installation of hydrological posts is impossible for economic reasons. In such a case, an alternative option to supplement hydrological observations could be the use of a surface unmanned vehicle to take data at any reference station at the operator's discretion. The method of identifying sources of stream pollution using the unmanned ship not only allows to significantly expand the hydrological monitoring network along streams, but also to locate illegal water users by randomly selecting a control node to measure flow velocity and water volume. The large number of registered control nodes can also serve as a basis for the commission of a discharge when an intruder is detected.
Relevance of drive shaft application made from composite materials in shipping machine-propulation complexes
Authors: Gorbachev Maxim Michailovich , Zabotkin Nikolai  Vasil'evich
Published: September 2024

The application of polymer-composite materials in the manufacture of hull structures experiencing static loads is considered. The advantages and disadvantages of drive shafts made of polymer composite materials are investigated. Examples of vessels whose construction includes polymer-composite materials are given. The finite element method is noted and modeling software products currently used for the development, design and analysis of composite materials are presented. The most common types of reinforcing fibers that increase the strength characteristics of composites are considered, the appearance of fiberglass, carbon fiber (carbon fiber) and aramid fiber is illustrated. The role of fillers for improving thermal conductivity, reducing density and increasing stiffness of the composite is noted. The features of designing and calculating the parameters of drive shafts made of polymer composite materials are listed. An example of calculating the parameters of a composite shaft in the ANSYS program is given. The technology of filament winding for the manufacture of polymer composite shafts, used by leading manufacturers in the field of composite shaft manufacturing, is being considered. A diagram of the manufacturing process of a composite polymer shaft by the method of filament winding is given. Two types of winding machines are described – spiral and polar. The rules and requirements of classification societies (the Russian Maritime Register of Shipping and the Russian Classification Society) in the field of manufacturing vessels from composite materials and their use on ships are analyzed in detail. The analysis of the technology and the possibility of manufacturing experimental samples of shafts made of composite materials is carried out in the laboratory of the Marine Technology Service Testing Center of Astrakhan State Technical University.
Small-sized marine engines and possible ways to improve their technical characteristics
Authors: Dorokhov Pavel Aleksandrovich
Published: September 2024

Small-sized marine engines can have a variety of shapes and sizes: from conventional outboard engines to rarely encountered surface drive systems. There is no doubt that marine engines are vital for the maritime transportation of goods and people, but they also consume a lot of fuel and emit harmful greenhouse gases and pollutants. In this context, the issues of improving the efficiency of marine engines and reducing the environmental impact of shipping require attention. Topical issues related to improving the technical characteristics of small-sized marine diesels by optimizing the design of engine components and systems are considered. It has been established that one of their main difficulties in the process of mixing small-sized engines is the placement of the nozzle, which is offset relative to the combustion chamber. This leads to the need to use sprayers with an asymmetric hole arrangement. To increase the efficiency of the engine and improve its technical performance, it is proposed to increase the fuel injection pressure and clarify the structural elements that affect the mixing in the combustion chamber. The expediency of using local turbulence of the air charge is substantiated. The scheme of the relative position of the combustion chamber with local charge turbulators and the axes of the fuel jets of an experimental atomizer is formalized, designed to improve the combustion process and the injection system. The formulated proposals will improve the energy efficiency of engines and improve their environmental performance.
Analysis of the problems of the Russian Federation fishing fleet integrated maintenance
Authors: Valkov Vladimir Evgen'evich
Published: September 2024

Scientific research conducted in our country over the past three decades has revealed the degradation of the structures of regional fishery complexes, most clearly manifested in the curtailment of ocean fishing. Among the most acute problems is the complex of servicing the fishing fleet. There was made the attempt to identify and classify the main causes that led to the current situation and the ways to resolve them. The importance of changing the existing situation is emphasized by the country's leadership, which has set large-scale tasks for the industry, the main of which is to move away from the raw material model for the development of the country's fishery complex. It is stated that the scale and complexity of the particular problems that need to be solved preclude the trial-and-error approach inherent in a market of free competition under favorable conditions. A thorough and detailed scientific analysis of all the factors influencing the development of the fisheries industry and creating obstacles to its development should be carried out. The first stage of this analysis is the study of works published in the professional press that touch upon the formulated problem. The criterion for the selection of works for this analysis is their relevance, the validity of the conclusions made in them, the relevance of their topics and, most importantly, the availability of a substantiated analysis and the proposal of solutions.
Diagnostics of windings of a three-phase induction motor with a square rotor
Authors: Vinogradov Andrei Aleksandrovich , Suslennikova Elena Yur'evna
Published: September 2024

The issues of technical operation, diagnostics and repair of electrical equipment are always relevant, especially for merchant ships, because to achieve an economic result from the activities of shipping companies, the uninterrupted operation of ship mechanisms, devices and systems is important. To ensure uninterrupted operation, proper technical operation of shipboard electrical equipment, prevention of typical malfunctions, reliable diagnostics of electrical equipment and timely repairs are necessary. The diagrams of the connection of the stator winding of an asynchronous motor with a short-circuited rotor “Star” are given. A method for diagnosing the technical condition of the stator windings of a three-phase asynchronous motor with a short-circuited rotor, which does not involve disassembling the motor, by alternately measuring the resistances between the phases of the motor, is considered. In this case, a three-phase asynchronous motor with a phase rotor is considered as part of a simple system in which there are no restrictions on starting currents, reverse, changing engine speed, switching windings. To analyze this method, a set of educational and laboratory equipment “Three-phase asynchronous motor with fault simulator” was used, with which it is possible to set typical faults for a three-phase asynchronous motor. Variants of fault combinations are being considered. It is noted that the conclusion on the technical condition of the engine should be made, in particular, according to the values of the ohmic resistance of the engine windings. The necessary measurements were carried out for various types of malfunctions; based on the obtained measurement results, a conclusion was made about the proposed method.
Algorithms for controlling a motor ship when using a wheeled propulsion-steering complex and an azimuth thruster together
Authors: Grosheva Lyudmila Serafimovna , Plyushchaev Valeriy Ivanovich
Published: September 2024

The commissioned passenger cruise ship Golden Ring with a set of innovative propulsion systems: a wheel-propulsion steering system and an azimuth thruster is considered. The propulsors of the vessel are equipped with frequency drives, which makes it possible to implement both discrete (step) control of the rotation speed of the propeller wheels and continuous control of the characteristics of these units. Ratio of wheel rpm allows manipulating direction and magnitude of thrust of propulsors. The azimuthal thruster is mounted in the bow of the vessel and allows for a stop in any direction over the entire power range. The mathematical modeling of the motor ship motion is carried out in various embodiments of controlling the process of holding the ship on a given trajectory under wind impact. The parameters of the ship control and control system operation were compared with the use of wheel propulsors during continuous and stepped control, as well as when the ship is kept on course using a thruster. It has been found that in case of discrete (step) control of propulsors, which is used by navigators in manual control, it is difficult to provide good quality indicators of the control process, since the stage of change in the rotation speed of the propeller wheel is quite painful. In this case, a constant change in the rotation speed of one or the other co-forest is required. Discrete control of the thruster (in on/off mode at fixed power) also does not give good results. The implementation of algorithms for automatic control of propulsors in analog mode both using co-forest propulsors and a thruster ensures the movement of the ship along a given trajectory with sufficient accuracy in practice.
Studi Pengaruh Intentional Learning dengan Metode Writing-to-Learn pada Kemampuan Recall
Authors: Saragih Josua Windy , Noer Afra Hafny , Pebriani Lucia Voni
Published: September 2024

Penelitian ini dimaksudkan untuk membuktikan pengaruh intentional learning dengan metode writing-to-learn (WTL) pada kemampuan recall. Keberadaan prompt sebagai operasionalisasi WTL pada intentional learning berfungsi sebagai pengarah intensi kepada proses atensi yang lebih terfokus serta kemampuan recall yang meningkat. Penempatan instruksi menulis dan penggunaan writing prompt yang tepat dapat mengarahkan pada kegiatan belajar yang lebih efektif. Dilakukan eksperimen terhadap penempatan writing prompt dengan mengukur kemampuan recall hasil belajar. Terdapat 64 partisipan mahasiswa Psikologi yang dibagi ke dalam 2x2 nonequivalent between subject design, yaitu menulis “dengan prompt” dan “tanpa prompt” serta diberi tahu bahwa terdapat kegiatan menulis “sebelum” dan “sesudah” menonton video pembelajaran. Berdasarkan uji statistik Kruskal-Wallis, ditemukan bahwa terdapat perbedaan signifikan antarkelompok eksperimen (H(3) = 18.391, p < .00). Terdapat perbedaan signifikan pada kemampuan recall pada kedua kelompok menulis “dengan prompt” (z = -24.267, p < .05) serta pada kedua kelompok menulis “tanpa prompt” (z = 13.611, p < .05). Ditemukan bahwa perbedaan penempatan pemberitahuan kegiatan menulis serta penggunaan prompt dalam tulisan memengaruhi atensi partisipan yang berpengaruh pada kemampuan recall. Hal ini membuktikan bahwa terdapat pengaruh intentional learning dengan metode WTL pada kemampuan recall. Namun, prompt yang kurang familiar memunculkan orienting response sehingga hasil dari eksperimen ini perlu dibahas lebih lanjut.
Penerapan Lean Warehousing Pada Gudang Bahan Baku Industri Farmasi PT XYZ
Authors: Diina Tresnafuty Rasyiida , Sriwidodo Sriwidodo , Sylvia Nurrasjid Evi , Kustiyawan Iwa
Published: September 2024

Persaingan di dunia Industri pada era modern ini memicu para perusahaan untuk meningkatkan daya saing dan kualitas produk sebagai pemenuhan kepuasan pelanggan. Gudang dalam Industri Farmasi berperan dalam menjaga keberhasilan dan kelancaran rantai pasok produk. Setiap aktivitas yang dilakukan di gudang merupakan hal yang sangat penting bagi Industri Farmasi terutama pada aspek penyimpanan dan pengiriman. Gudang bahan baku merupakan tempat penyimpanan bahan baku yang akan digunakan untuk proses produksi, maka dari itu pengelolaan barang persediaan yang tidak efektif dan efisien dapat dilihat dari adanya pemborosan atau waste pada proses di gudang. Penelitian ini bertujuan untuk meningkatkan efisiensi aktivitas pergudangan melalui identifikasi pemborosan (waste) pada kegiatan di gudang bahan baku. Penelitian dilakukan menggunakan tool Value Stream Mapping dan Process Activity Mapping. Setelah waste teridentifikasi, maka tahapan selanjutnya adalah mencari akar permasalahan menggunakan fishbone diagram untuk selanjutnya dibuat rencana usulan perbaikan berupa Future Value Stream Mapping. Diketahui waste yang dominan terjadi adalah waiting dan motion. Usulan perbaikan yang dapat dilakukan yaitu dengan melengkapi informasi dimensi lokasi penyimpanan pada sistem ERP serta peningkatan kesadaran operator dalam menerapkan SOP.
Formulasi dan Evaluasi Sediaan Oral Thin Film Ekstrak Daun Saga Rambat (Abrus Precatorius L.) dengan Variasi Konsentrasi Peg 400
Authors: Ambarwati Rini , Andini Septia , Solihat Silvya Nurul
Published: September 2024

Daun saga rambat (Abrus precatorius L.) dapat menjadi alternatif pada pengobatan sariawan yang biasa dimanfaatkan oleh masyarakat secara turun – temurun dengan cara ditumbuk sampai lumat dan kemudian ditambah air matang untuk dikumur atau bahkan diminum. Daun saga rambat memiliki aktivitas sebagai antijamur, karena tanaman ini mengandung senyawa metabolit sekunder berupa flavonoid, saponin, alkaloid dan steroid yang dapat menghambat pertumbuhan jamur Candida albicans. Penelitian ini bertujuan untuk menentukan variasi polimer HPMC dan PEG 400 yang menghasilkan mutu fisik terbaik dari sediaan oral thin film ekstrak daun saga (Abrus precatorius L.) yang memenuhi syarat mutu. Sediaan dibuat sebanyak 4 formula dengan perbedaan konsentrasi pada PEG 400 yaitu F1 dengan konsentrasi 5%, F2 dengan konsentrasi 10%. F3 dengan konsentrasi 15%. Dan F4 dengan konsentrasi 20%. Hasil penelitian menunjukkan variasi konsentrasi berpengaruh terhadap mutu sediaan oral thin film, formula 3 merupakan formula formula terbaik berdasarkan uji waktu hancur (48 detik), uji ketahanan lipat (201,2) dan persen pemanjangan (85,71%).