bluuebunny/crossref_metadata_2025 huggingface dataset:
How to identify animal droppings and poo?
Authors: Frey Erzsebet
Published: November 2024

Explanation of why identifying animal droppings and poo is important Identifying animal droppings and poo is important for several reasons, including:

Understanding animal behavior:

The type and location of animal droppings and poo can provide valuable insights into the behavior of the animals that produced them.
20 Animals that lay eggs
Authors: Frey Erzsebet
Published: November 2024

Egg-laying animals, also known as oviparous animals, are those animals that lay eggs as a means of reproduction. These animals produce and lay eggs outside of their bodies, and the eggs typically hatch into young animals after a certain period of incubation. Egg-laying animals can be found in a variety of different classes and orders within the animal kingdom, including birds, reptiles, insects, fish, and even some mammals.
Posicionamiento dinámico y guiado de un robot móvil con cinemática de triciclo
Authors: Font Llagunes Josep Maria , Agullo Batlle Joaquim
Published: November 2024

Posicionamiento y guiado son dos problemas fundamentales en la navegación de robots móviles. En la primera parte de este trabajo se presenta un algoritmo de posicionamiento, basado en un goniómetro láser y un conjunto de reflectores, que permite calcular la posición y la orientación de un robot móvil sin posiciones indeterminadas si se emplea un mínimo de tres reflectores no alineados. La simulación en tiempo real de la evolución de los ángulos, relativos al robot, de las rectas entre el goniómetro láser y los reflectores utilizados permite el uso consistente del algoritmo propuesto en condiciones dinámicas –robot en movimiento–. En segundo lugar se presenta un método de guiado, para un robot móvil con cinemática de triciclo, que a partir de los errores de posición y de orientación del robot controla de forma asintóticamente estable la trayectoria de uno de sus puntos. El punto elegido depende del tipo de maniobra que realice el robot. En el trabajo se presentan resultados experimentales utilizando un prototipo real, que demuestran la precisión del algoritmo de posicionamiento dinámico y la estabilidad de la ley de guiado propuesta.
Estudio comparativo de materiales como respuesta a la norma FMVSS 201U protección de la cabeza en el impacto contra zonas internas del vehículo
Authors: Peláez Vara Jesús , Ruiz Calvo Justo , Ramos Barbero Basilio , García Maté Esteban
Published: November 2024

Con este trabajo hemos pretendido crear una base de datos, de materiales usados como protectores, para el cumplimiento de la normativa FMVSS 201. Para realizar la experimentación se ha construido el banco de ensayos de caída libre, que con un valor de referencia común, nos ha permitido realizar un estudio compara tivo de los materiales ensayados. Del estudio realizado se han obtenido las siguientes conclusiones: De forma general el incremento de efectividad de los protectores aumenta con el espesor de los mismos. Las espumas no recuperables tienen un buen comportamiento frente a variaciones de temperatura. La disminución de la densidad de la espuma aumenta el incremento de efectividad. Las estructuras tubulares con láminas de acero son más eficaces que las estructuras tubulares con láminas de aluminio. En las estructuras tubulares redondas, la posición del tubo no ejerce influencia sobre el incremento de efectividad. Dentro de las estructuras tubulares rectangula res, la eficacia aumenta al acercarse a la sección cuadrada.
Simulación numérica del movimiento de abducción del hombro
Authors: Barrientos G. , Quiroz L. , Molina D. , Roa S. , Saenz E.
Published: November 2024

Se presentan las bases teóricas y experimentales para el diseño óptimo de una órtesis que ayude a restringir los movimientos bruscos e involuntarios de niños con parálisis cerebral. La primera etapa, mostrada aquí, es validar los resultados de la simulación a partir de mediciones del movimiento del hombro en personas sanas usando un sistema de adquisición de datos. Mediante optimización se soluciona el problema de minimizar una función de fuerza restringida por valores acotados de la fuerza máxima en los músculos que originan el movimiento. El problema se reduce a 18 ecuaciones de fuerzas con 108 restricciones de cotas máximas en lasfuerzas. Las fuerzas obtenidas concuerdan con otros resultados publicados.
Terminologia de envelhecimento de sistemas, estruturas e componentes - versão em português
Authors: Di Lorenzo R. F. , Cruz E W. A. Soares J. R. B.
Published: November 2024

O objetivo do presente trabalho é apresentar uma versão em português de uma terminología internacional para o entendimento de termos relativos ao gerenciamento do envelhecimento  de sistemas, estruturas e componentes de instalações industriais. Além de um glossário de termos, com definições e alguns exemplos, apresentase uma lista de idéias chaves para esclarecer a terminologia e apontamse algumas dificuldades na tradução de alguns termos do inglés para o português.
Análise dinâmica em modelo reduzido de uma estrutura com dois pavimentos
Authors: Souza Ribeiro Rodrigo , De Almeida Ferreira Jorge Luiz , Gavazza Menin Eduardo César
Published: November 2024

Este artigo tem como principal objetivo avaliar os efeitos das incertezas associadas às estimativas dos parâmetros que caracterizam a modelagem do sistema sobre o seu comportamento dinâmico. Com tal finalidade, métodos experimentais, analíticos e numéricos foram utilizados para comparação de parâmetros modais de um modelo reduzido de uma estrutura de dois pavimentos. A metodologia experimental baseouse em técnicas de varreduras em seno e no Método da Resposta em Freqüência [1,2], pela qual os parâmetros modais são obtidos diretamente das informações contidas nas funções de resposta em freqüência. Nesta análise foram estimadas as incertezas envolvidas na resposta dinâmica da estrutura devido à: (1) diferentes condições de contorno, (2) variabilidade das propriedades mecânicas e dimensionais das colunas de sustentação dos pavimentos. Um modelo simplificado de dois graus de liberdade foi utilizado na formulação analítica. Baseado no Método de Elementos Finitos [3], análises modais e harmônicas foram realizadas para simulação do comportamento dinâmico da estrutura ideal. Os resultados obtidos pelos diferentes métodos foram comparados e pôdese quantificar as incertezas envolvidas na resposta dinâmica da estrutura, validar o modelo numérico idealizado, assim como,verificar a consistência dos resultados experimentais.
Modelado de la transferencia de calor por convección natural y radiación combinadas mediante el método de los volúmenes finitos
Authors: Rebollo Daniel , Sanchez Manuel
Published: November 2024

En este trabajo se ha simulado numéricamente un proceso de transferencia de calor por  conducción, convección y radiación en forma combinada. Se ha estudiado una cavidad  cuadrada bidimensional rellena de aire que absorbe, emite y dispersa isotrópicamente la  radiación térmica. Además, se han considerado una gran va- riedad de situaciones térmicas,  convectivas y radiantes. Para realizar la simulación numérica se ha utilizado el método de los    volúmenes finitos elcual ha sido extensamente usado en problemas de convección y solo  recientemente se ha extendido su uso a problemas de radiación térmica. El principal objetivo  de este trabajo es el análisis de los procesos de transferencia de calor por conducción,  convección y radiación combinados en cavidades cuadradas bidimensionales y la implemen tación y validación del método de losvolúmenes finitos para la simulación numérica de procesos de transferencia de calor por conducción, convección y radiación combinada. El dominio  espacial bidimensional ha sido discretizadoutilizando volúmenes de control cuadriláteros y el   dominio angular se ha discretizado en un número finitos de ángulos de control. El procedimi ento numérico ha sido implementado en un  programa de computadora que fue utilizado para obtener los resultados presentados en este trabajo. Las soluciones obtenidas han sido comparadas con resultados publicados. El análisis muestra que las soluciones presentadas en este trabajo son correctas y pueden ser extendidas situaciones más complejas con un amplio margen de seguridad
Simulação numérica de escoamentos com superfície livre
Authors: Didier E.
Published: November 2024

Neste artigo apresenta-se um método de simulação de escoamentos bidimensionais com superfície livre, usando uma técnica de resolução totalmente acoplada das equações de Navier-Stokes, adaptada às malhas estruturadas e não estruturadas, e uma técnica de captura de interface de tipo "Volume of Fluid" (VOF). O método de resolução totalmente acoplado consiste em resolver um só sistema linear em velocidade e pressão. Este método revela-se robusto e eficaz na simulação de escoamentos não estacionários. A técnica de captura de interface VOF revela-se adaptada na simulação de deformadas complexas da superfície livre entre dois fluidos..
Soldadura de ligas de alumínio com laser de díodos
Authors: Leal R.M. , Loureiro A.
Published: November 2024

Este trabalho teve por objectivo o estudo do efeito do processo de soldadura com laser de diodos na soldadura de ligas de alumínio sensíveis a fissuraçao a quente. Verificou-se que o processo permite obter soldaduras com boa qualidade, sem fissuraçao a quente, embora com alguma porosidade. As ligas 2024-T3 e 6061-T4, apresentaram urna perda substancial de dureza na zona fundida e na zona afectada pelo calor, e a liga 5083-0 urna reduçao de dureza mais reduzida, nestas zonas. Pelo contrário a liga 7075-0 apresentou um aumento de dureza nestas zonas. As soldaduras nas ligas 5083-0 e 6061-T4 apresentararn perdas de eficiencia de respectivamente 21% e 12%. As soldaduras na liga 7075-0 nao apresentaram perda de eficiencia. A dureza nao deve ser usada para estimar a perda de eficiencia das soldaduras.
Desarrollo del sistema de percepción de una plataforma móvil para entornos exteriores
Authors: Castejón Sisamón Cristina , Blanco Rojas María Dolores , López Boada Beatriz , Moreno Luis E.
Published: November 2024

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Socavación local en un fondo móvil aguas abajo de una losa rígida
Authors: Moncada Alix T. , Aguirre Pe Julián
Published: November 2024

En este trabajo se analiza la socavación local en un fondo móvil aguas abajo de una losa rígida, debida a un chorro de agua horizontal sumergido que sale desde una compuerta. Se hizo un estudio experimental del fenómeno. Los experimentos se realizaron con dos tamaños de arena como material de fondo, para diferen tes aberturas de compuerta y velocidades del chorro. Se empleó un canal de paredes de vidrio, 0.5 m de ancho y 0.5 m de profundidad. En cada experimento se midió el perfil del fondo socavado en el estado de equilibrio. Los parámetros que caracterizan el fenómeno de socavación se identificaron con base en el razonamiento físico y el análisis dimensional. Se obtuvieron expresiones empíricas que permiten predecir las longitudes características del foso de socavación en el estado de equilibrio. Además, se presentan algunos resultados experimentales de la evolución temporal del foso de socavación. Se obtienen empíricamente ecuaciones para predecir la variación con el tiempo de la profundidad de socavación máxima y la longitud del foso de socavación.
Variant Analysis of the Ownership Structure of Land Intended for Single-family Housing
Authors: Jasińska Elżbieta , Hanus Paweł , Maciejko Alicja , Skiba Marta
Published: November 2024

The most frequently preferred solution for the ownership structure of land for single-family housing in Poland is the structure of one cadastral plot – one single-family building. However, changing architectural concepts allow for the creation of single-family housing estates in systems consisting of atrial houses or T-type buildings, which have much more advantages than traditional terraced or semi-detached buildings. These advantages result from a different solution of building forms, which can be combined not only in rows, but also in variously shaped groups consisting of many houses. This provides greater possibilities for the free shaping of development plans for groups of houses, which in turn can be combined in various spatial arrangements while maintaining the required conditions of individual entrance, proper lighting of rooms and mutual distances. At the same time, it allows for more intensive use of the area. Despite the indicated advantages, in the light of the observed implementation practice, it seems problematic to locate buildings with separate ownership, used individually on a plot of land used jointly. The article analyzes the possibilities of legal solutions in the area of land and buildings that can be applied in such a solution. The strengths and weaknesses of each solution were assessed and their opportunities and threats were indicated. For the purposes of this research, four differently shaped groups of buildings consisting of T houses were selected. The results were presented in a SWOT analysis for the development variants adopted for the research using the T house as a repeatable residential unit.
The article proposes four legal and neighborly solutions that enable and promote the construction of housing estates using highly intensive atrial development based on the T-house.
Application of the Southwell Method to Determine the Critical Load of Compression Rods Made of Nonlinear Materials
Authors: Marcinowski Jakub , Sadowski Mirosław
Published: November 2024

Experimental determination of the critical force of a compression bar made of linear material does not pose major problems. The widely used Southwell method is also applicable to bars with cross-sections varying in length. The purpose of the research undertaken was to demonstrate that this method can also be successfully applied to bars made of elastic materials exhibiting nonlinear σ(ε) characteristics. Using analytical relationships for a rod satisfying the assumptions of Euler-Bernoulli theory, F(δ) relationships were derived for a rod with an initial arc imperfection, and Southwell diagrams were constructed on this basis. Nonlinear equilibrium paths F(δ) were also determined numerically using the COSMOS/M program for this purpose. For the pre-assumed different nonlinear characteristics, full confirmation of the validity of the application of the Southwell method for determining the critical force was obtained.
Penguatan Keterampilan Komunikasi dan Kepercayaan Diri Melalui Public Speaking: Penerapan Metode Presentasi dan Bermain Peran di Kalangan Siswa SMP
Authors: Sukmasetya Pristi , Dwihantoro Prihatin
Published: November 2024

Public speaking is an essential skill that should be mastered by all individuals, including middle school students, as it is valuable not only in academic settings but also in social and professional contexts. This community service initiative aims to enhance public speaking skills and boost the confidence of middle school students through a combination of presentation and role-playing methods. The training consisted of a series of sessions where students were given opportunities to prepare and deliver structured presentations, as well as practice speaking in simulated, real-life scenarios. The results of the program showed significant improvement in both the verbal and non-verbal communication skills of the students. Those who initially lacked confidence became more capable of organizing effective presentations, utilizing appropriate body language, and responding to their audience effectively. Additionally, the training helped students overcome anxiety associated with public speaking, increasing their courage to speak in front of others. While some students may still require a more personalized approach, the overall methods proved to be effective in developing public speaking skills. This training is expected to provide long-term benefits in students' soft skill development and could serve as a sustainable program within schools.
Marketing Management
Authors: Ahluwalia Dr. Gaganpreet Kaur
Published: November 2024

This comprehensive textbook on Marketing Management equips readers with the knowledge and skills to navigate the complexities of modern marketing. Covering essential topics from market research and target marketing to brand management, digital marketing, and marketing analytics, it emphasizes the integration of theory and practical application. Through real-world examples, case studies, and cutting-edge research, this book makes marketing management accessible and engaging for students, practitioners, and professionals. By mastering the principles, strategies, and practices outlined, readers will be empowered to drive business success in today’s rapidly evolving marketplace.
¿Caja Misteriosa?, ¿Caja mágica? o ¿Teatro Lambe-Lambe? Nombrar las miradas en la genealogía de Xalapa
Authors: López Medina Paloma
Published: November 2024

Al nombrar su quehacer, los creadores de Xalapa reconocen una genealogía que modeliza el carácter e intencionalidad de su poética personal. Para distinguirse o para vincularse con las demás expresiones del teatro de formas animadas, estas modelizaciones entrañan nociones referentes a la resolución técnica, pero también a los modos de su expresión poética. Este artículo tiene por cometido reflexionar sobre las divergencias y similitudes en torno a la conceptualización de la mirada, ya que ésta incide en la comprensión de un artefacto escénico que, aparentemente, puede ser nombrado de tres maneras distintas: Caja Misteriosa, Caja Mágica y Teatro Lambe Lambe.
The Influence of the Work Environment and Individual Characteristics on Public Services at the Alim Village Office, Batang Cenaku District, Indragiri Hulu Regency
Authors: Ningsih Fitria
Published: November 2024

The aim of this research is to determine the influence of the work environment and individual characteristics simultaneously on public services, to determine the influence of the work environment partially influencing public services and to determine individual characteristics partially influencing public services at the Alim Village Office, Batang Cenaku District, Indragiri Regency. Upstream. Using quantitative methods, the data analysis used is multiple linear analysis using the SPSS program. The sample in this research consisted of 89 respondents who had provided services at the Alim Village Office. This research was conducted from September 30 2022.
The research results of the Work Environment and Individual Characteristics simultaneously influence Public Services, the Work Environment partially influences Public Services, Individual Characteristics partially influence Public Services.
Power Usage Monitoring and Overload Protection System for Distribution Transformers
Authors: M. Syahruddin  , Abdullah  , Haq Moh. Zainul , Putri Maharani , Indah Sarah Karima , Azhari Syahdika Kurnia , Fiki Akbar , Cholish  , Roji Fahrul
Published: November 2024

Efficient energy manitoring and overload protection on distribution transformers are very much needed. This study aims to develop a power usage management system and overload protection integrated with Internet of Things (IoT) technology, with a specific target to monitor and manage power usage on distribution transformers in real time, as well as provide automatic protection against overload conditions. The methodology used in this study involves the design and implementation of hardware and software that supports wireless communication and data analysis. This system is also equipped with a power reading and protection mechanism that can automatically cut off the electricity flow when an overload detection occurs, in order to prevent damage to the transformer, it is expected that this system can increase the efficiency of power usage management and provide a quick response to overload conditions. The implementation of this system is expected to reduce operational costs and increase the reliability of electricity supply on the distribution network. Based on the tests that have been carried out, it has been proven that the system has worked well in maintaining important variables in the power usage management system and overload protection on the Internet of Things integrated distribution transformer.
A Study on Comparative Analysis Regarding Gen-Z’s Perception Over Domino’s Pizza and Pizza Hut in Ahmedabad City
Authors: Shah Henil , Mehta Pankti , Vidani Jignesh
Published: November 2024

This study investigates Generation Z's perceptions of Domino’s and Pizza Hut in Ahmedabad, focusing on factors such as food quality, pricing, and brand reputation. Utilizing a quantitative approach, the research tests eight hypotheses related to the influence of age on these perceptions. The findings reveal that age does not significantly impact how Generation Z evaluates these brands, leading to the rejection of all null hypotheses. This suggests a shared perspective among this demographic, indicating that factors beyond age—such as overall experience and brand engagement—are crucial in shaping their preferences. The study highlights the need for targeted marketing strategies that resonate with Generation Z's values, particularly in terms of health, sustainability, and digital engagement. Furthermore, enhancing customer experiences and effectively communicating brand value are essential for building loyalty. The findings also emphasize the importance of corporate social responsibility initiatives in improving brand reputation among socially conscious consumers. The study concludes by offering recommendations for future research, including broader demographic analyses and qualitative approaches to gain deeper insights into consumer motivations.
Review Article : The Effect of Quercetin Compounds on Type II Diabetes Mellitus
Authors: Wahyu Udayani Ni Nyoman , Ni Putu Lilis Adnyani
Published: November 2024

The immune system of the body targets the insulin-producing pancreatic cells, which results in diabetes mellitus. Synthesized antidiabetic drugs cause side effects of liver and kidney damage. Quercetin are known to have the same mechanism as synthetic antidiabetic drugs, so it can be an alternative treatment for diabetes. This article is a review with a literature search using PubMed, MDPI and Google Scholar. Quercetin activate AMPK which affects the decrease in blood glucose levels, protect cell damage due to free radicals so as to prevent a decrease in insulin levels and repair tissue damage due to hyperglycemia. Quercetin plays a role in reducing the risk of Type II DM complications. Quercetin compounds affect Type II Diabetes Mellitus with various mechanisms.
The Influence of Transparency, Governance, and Financial Accountability in Managing Financial Reporting in the Public Sector
Authors: Rizki Inmas Pratiwi  , Hali ah  , Andi Kusumawati
Published: November 2024

Transparency, good governance and effective financial accountability are key pillars in the management of financial statements in the public sector. Transparency allows stakeholders to access financial information clearly, which in turn increases accountability and public trust. Good governance refers to the application of the principles of accountability, participation and efficiency in financial management. Meanwhile, financial accountability is the basis for ensuring that every use of public resources is properly accounted for and according to the rules. This study aims to analyze the effect of transparency, governance and financial accountability in the public sector. In this study, researchers used a qualitative descriptive method, namely a literature review, whose literature review used secondary data, namely articles / journals of previous researchers accessed from google scholer. From the results of this study transparency, governance and financial accountability in the management of financial reporting in the public sector show that these three elements significantly improve the quality of financial reporting. transparency can facilitate access to information, governance can strengthen internal control and supervision and accountability can ensure accountability for budget use.
Comparison of ReLu Activation and Logistics Functions in Classification of Casting Product Defects with Perceptron Multilayer Approach
Authors: Apriyandi M  , Muhamad Fatchan  , Suratman
Published: November 2024

In the industrial sector, production quality is very important for company operations and must be managed effectively. ISO 9001 emphasizes quality management to direct processes and improve organizational efficiency. Quality control is important to prevent defects in materials, because foundry production must produce high quality materials so that they can be used in the long term. ISO 14001 environmental management environment, with high output impacts on the environment due to lack of transparency. This research uses ReLu and Logistics Activities to improve casting quality using multilayer perceptron technology, finding that ReLu activities have a higher dominance (99%) compared to other actives.
Relationship Between Determinant Factors of Nurse Competency in Disaster Mitigation in 5 Community Health Centers in Ende
Authors: Budiana Irwan , Patmawati Try Ayu
Published: November 2024

This research aims to determine factors related to nurse competency in disaster mitigation. This research is a descriptive analytical study with a cross sectional approach. The population in this study were all nurses in 5 Community Health Centers in Ende City. Sampling used a purposive sampling technique with an instrument in the form of a questionnaire. Data were processed using SPSS software with a multiple regression test. The research results showed that there was no relationship between age, gender, education level, length of service and participation in disaster training with nurses' competency in carrying out disaster mitigation. Meanwhile, the level of education and knowledge, length of service and attitudes and competence of nurses in disaster mitigation have a significant relationship
Mapping of Flood-Prone and Dengue Fever-Prone Areas in Tahtul Yaman Village, Pelayangan District, Jambi City
Authors: Rini Willia Novita Eka , Ranti Andewi Amy , Putri Najhoa Sonia , Situmorang Muhammad Farhan , Salsabila Mutiara , Marlina Yeni , Permata Cici , Meidita Windi , Abyan M. Gusman Syahlun , Firdaus A. Somad , Al' Fajr
Published: November 2024

Floods are natural events that come suddenly with an uncertain periodicity, except for areas that often experience annual flooding, such as in Tahtul Yemen Village. This flood disaster can cause health problems that threaten society, one of which is the Dangue Hemorrhagic Fever (DHF) outbreak. This activity aims to carry out mapping of flood-prone areas and dengue-prone areas in Tahtul Yemen Village to provide education about the management and prevention of dengue fever in order to improve the health status of the community, especially those in vulnerable areas. This research is exploratory research with an ecological study research design using Geographic Information Systems (GIS). Based on data on flood-prone areas obtained from 12 RTs in Tahtul Yaman Village, 5 RTs had a high percentage of being affected by flooding, 4 RTs had a moderate percentage of being affected by flooding, and 3 RTs had a low percentage of being affected by flooding. Meanwhile, for dengue-prone areas, there are 7 RTs with a low percentage, 3 RTs with a medium percentage, and 2 RTs with a high percentage. In conclusion, it was found that in Tahtul Yaman Subdistrict areas prone to flooding with the highest dominance are in RT 11,12,5,9, and 7 and areas prone to Dengue Hemorrhagic Fever (DHF) are dominant in RT 7 and 9. It is recommended that the areas that have been mapped be included in prone to flooding and Dengue Hemorrhagic Fever (DHF) strengthen drainage systems, green infrastructure, and increase public awareness about disease prevention
The Influence of Disciplinary Education on the Religious Interpersonal Intelligence of Students at Markaz Imam Malik Islamic Boarding School (Sociopedagogical Approach)
Authors: Muhammad Faisal R  , Mahmud Muh. Natsir , Kasim Amrah , Yuspiani
Published: November 2024

This study aims to (1) describe disciplinary education at the Markaz Imam Malik Islamic Boarding School, (2) describe the religious interpersonal intelligence of students, and (3) determine the significant influence of disciplinary education on the religious interpersonal intelligence of students. The type of research is explanatory with a socio-pedagogical approach. Data were collected through questionnaires and documentation and analyzed through editing, coding, and tabulation. The results of the study showed: (1) The average disciplinary education of students was 72.52 (high level, 70%), (2) The average religious interpersonal intelligence of students was 57.46 (high level, 68%), and (3) Religious interpersonal intelligence influenced disciplinary education with a magnitude of 41.7%. The implication of this study is the need for schools to pay more attention to students' religious interpersonal intelligence and discipline
Chemical composition of apple-tree (Malus domestica Borkh.) leaf essential oils
Authors: Judžentienė Asta , Misiūnas Audrius
Published: November 2024

Despite that essential oils play very important and multifunctional roles (mainly protection function against pests) for apple-tree, the number of studies of the fruiter leaf oils is still very limited.This research represents the chemical composition of apple-tree (Malus domestica Borkh.) leaf essential oils. Plant material was collected from fruit trees growing in different parts of Lithuania. The oils, prepared by simultaneous hydro-distillation and extraction with organic solvents in a Clevenger-type apparatus, were analysed using GC(FID) and GC/MS methods. The compositions varied both by individual principal constituents and by an amount of fractions. The sesquiterpenoid fraction (26.9–45.7%) was the biggest one in all investigated oils, which contained sesquiterpenenes from 13.7 to 36.0%, and oxygenated sesquiterpenes from 9.7 until 25.0%. The percentage of monoterpenoids varied from 5.3 to 10.1, the amount of diterpenes differed from 3.6 to 27.3%, and the quantity of aliphatic hydrocarbons was 5.2–24.4%. The first three major compounds were found to be (iso)phytol (≤27.3%), (E, E)-α-farnesene (≤22.0%), n-hexyl benzoate (≤13.5%), tridecane (11.0%), and α-cadinol (10.5%) in all the investigated apple-tree leaf oils.One oil under study could be attributed to the (iso)phytol and another one to the (E, E)-α-farnesene chemotype, while other oils were of mixed types.
La fonte de ce numéro : Alegreya
Authors: Bideault Patrick , Chupin Maxime
Published: November 2024

La fonte de ce numéro : Alegreya
Prochaines rencontres
Authors: Bideault Patrick
Published: November 2024

Prochaines rencontres
Optimization of High-Frequency Trading Strategies Using Deep Reinforcement Learning
Authors: Cao Guanghe , Zhang Yitian , Lou Qi , Wang Gaike
Published: November 2024

This study presents a new method for optimising high-risk trading (HFT) strategies using deep learning (DRL). We propose a multi-time DRL framework integrating advanced neural network architectures with sophisticated business data processing techniques. The framework employs a combination of convolutional neural networks for manual order analysis, short-term memory networks for time series processing, and a multi-head listening mechanism for body fusion. We formulate the HFT problem based on Markov Decision Processes and use the Proximal Policy Optimization algorithm for training. The model is evaluated using tick-by-tick data from the NASDAQ exchange, including ten liquid stocks in 6 months. The experimental results show the superiority of our method, achieving a Sharpe ratio of 3.42, outperforming the learning model and machine learning based on benchmarks up to 33%. The proposed strategy has demonstrated strong performance across a wide range of regulatory markets and has shown potential for strategic objectives. Sensitivity analysis confirms the model's stability across a range of hyperparameters. Our findings suggest that the DRL-based approach can improve HFT performance and provide better market adaptation and risk management. This research leads to the continuous evolution of algorithmic trading strategies and shows the potential of AI-driven approaches in financial markets.
Concepciones sobre el futuro y su enseñanza en maestros en formación inicial. Un estudio comparativo entre España e Italia
Authors: Pérez-Rodríguez Noelia , De Alba Fernández Nicolás , Navarro-Medina Elisa , Zecca Luisa
Published: November 2024

Research is presented which focuses on the conceptions of pre-service teachers about the future and its teaching. A review is made of some of the most interesting contributions in this field at international level. The study sample is composed of 114 students from two universities, one in Italy and one in Spain. Their answers to open-ended questions in a questionnaire are analysed qualitatively based on a system of categories. The results show broad agreement with the literature on this issue, although they introduce several nuances and show slight differences between the two countries. In conclusion, based on the results, some training strategies are proposed that could have an impact on the improvement of initial teacher training in this area.

Se presenta una investigación centrada en las concepciones de los maestros en formación inicial sobre el futuro y su enseñanza. Se realiza un repaso por algunas de las aportaciones más interesantes en este ámbito a nivel internacional. La muestra de estudio está compuesta por 114 estudiantes de dos universidades, una de Italia y otra de España. Sus respuestas a preguntas abiertas de un cuestionario son analizadas de manera cualitativa a partir de un sistema de categorías. Los resultados muestran una amplia concordancia con la literatura en torno a esta cuestión, aunque introducen diversos matices y arrojan diferencias leves entre ambos países. Para concluir, en base a los resultados, se proponen algunas estrategias formativas que podrían incidir en la mejora de la formación inicial de docentes en este ámbito.
Necesidades de formación continua para la enseñanza de competencias de pensamiento histórico en secundaria
Authors: Guerrero Romera Catalina
Published: November 2024

The aim of this paper is to identify the training needs of in-service secondary school teachers in relation to the use of methodologies, resources and other key competences for teaching, as well as to assess some general questions about the training received. A descriptive correlational cross-sectional study with a quantitative approach was carried out. The instrument is an ad hoc questionnaire with a Likert-type response scale (1-5) which was administered to 68 active teachers. The results show that there is a need for training in active methodologies such as project-based learning or gamification and in didactic and digital resources. It is concluded that teachers need to improve their knowledge and skills through ongoing training that promotes the application in the classroom of a more constructivist and competency-based model of history teaching

El artículo tiene como finalidad identificar cuáles son las necesidades formativas del profesorado en activo de secundaria en relación al uso de metodologías, recursos y otras competencias clave para la enseñanza, así como valorar algunas cuestiones generales sobre la formación recibida. Se realizó un estudio descriptivo correlacional de corte transversal con enfoque cuantitativo. El instrumento es un cuestionario elaborado ad hoc con una escala de respuesta tipo Likert (1-5) administrada a 68 profesores y profesoras en activo. Los resultados muestran que hay una necesidad formativa en metodologías activas como el aprendizaje por proyectos o la gamificación y de recursos didácticos y digitales. Se concluye que el profesorado necesita mejorar sus conocimientos y competencias a través de una formación permanente que fomente la aplicación en el aula de un modelo más constructivista y competencial de la enseñanza de la historia.
Digital Resources for Teaching and Learning History. A Research Review
Authors: Rodrigues Junior Osvaldo , Marín Suelves Diana , López Gómez Silvia , Rodríguez Rodríguez Jesus
Published: November 2024

The teaching and learning processes of History are mediated by the educational resources that teachers decide to use in their subject. It is interesting to analyze the use and impact of digital educational resources in these processes. This work consists, on the one hand, of a bibliometric study that quantifies the scientific production of the last decade through the analysis of 116 documents retrieved from the Scopus database and, on the other hand, of a content analysis that delves into the scientific evidence. The results confirm that we are facing an emerging field of research in recent years and that the subject is widespread, being studied by different countries and institutions. On the other hand, given the number of documents analyzed, we conclude that more efforts are needed in this field, especially in the evaluation of digital resources used in the teaching/learning of history.

Los procesos de enseñanza y aprendizaje de la Historia están mediatizados por los recursos educativos que los profesores deciden utilizar en su asignatura. En la sociedad actual, donde la digitalización tiene un impacto significativo en todos los ámbitos de la vida cotidiana, resulta interesante analizar el uso e impacto de los recursos educativos digitales para conocer el enfoque desde el que se plantean los procesos de enseñanza y las posibilidades que ofrecen las nuevas tecnologías. Este trabajo consiste, por un lado, en un estudio bibliométrico que cuantifica la producción científica de la última década mediante el análisis de 116 documentos recuperados de la base de datos Scopus y, por otro, en un análisis de contenido que profundiza en la evidencia científica. Los resultados confirman que nos encontramos ante un campo de investigación emergente en los últimos años y que la temática está muy extendida, siendo estudiada por diferentes países e instituciones. Por otro lado, dado el número de documentos analizados, concluimos que son necesarios más esfuerzos en este campo, especialmente en la evaluación de los recursos digitales utilizados en la enseñanza/aprendizaje de la Historia.
Uranium Exploration Planning, Management and Practice
Authors:   International Atomic Energy Agency
Published: November 2024

The objective of this Technical Document is to provide clear guidance including best practices and recommendations for the planning, management and implementation of uranium exploration projects. It provides a systematic approach to the development and implementation of uranium exploration programmes. The intended audience includes, but is not limited to, government decision makers at all levels, governmental officers in mineral resources, government geological surveys, mining operators and individuals, private companies and universities with interests in mineral exploration.
Turnover Intention Analysis In PMA Bogor
Authors: Kasmir Kasmir  , Jakfar Jakfar  , Parwoto Parwoto
Published: November 2024

The superiority of a company really depends on the human resources (HR) it has. Excellence in the field of human resources means that the company can retain, nurture and develop its quality employees from time to time in accordance with the standards they have set. Superior employees are those who have advantages compared to employees in other companies, for example abilities and behavior, so that they are able to achieve targets and even exceed what was previously set as their workload.The management of a company that has superior employees must be good at looking after, nurturing and retaining employees so that they continue to perform well and continue to survive in the company. Maintenance can be done by making employees feel happy and at home working in the company. Then by continuing to develop the competencies and talents they have, so that they have the ability, behavior and high loyalty to the company. If this is not done, it will certainly be a problem for employees to maintain and retain their employees.
Analysis of the Role of Garbage Bank in Improving the Community Economy in Medan Belawan District
Authors: Anggia Ramadhan  , Annisa Nabila Zachra
Published: November 2024

Waste is a serious problem in Indonesia, including in Medan Belawan Regency. The Waste Bank Program is presented as a solution for waste management and community economic empowerment. This study aims to determine the role of the Waste Bank in community income. The research method used is descriptive statistics presented in the form of frequency distribution tables, histograms, steam and leaf (stem and leaf diagrams) or box plots (box line diagrams). Data collection was carried out through interviews, questionnaires and observations. The data analysis technique used is statistical analysis. The Waste Bank Program in Medan Belawan Regency has provided economic, social and environmental benefits. Economic benefits include increasing community income, creating jobs, and saving waste transportation costs. Social benefits include increasing public awareness of the importance of good waste management, and increasing public concern for the environment. Environmental benefits include reducing rubber production, reducing environmental pollution, and preserving natural resources. The Waste Bank Program in Medan Belawan Regency is one example of the application of an effective and sustainable green economy concept. This program can be a model for other waste management programs in Indonesia.
Assessing The Effectiveness Of Maritime Sustainability Initiatives: A Qualitative Study
Authors: Bambang Sumali  , Tri Cahyadi  , Andriyan Hendry Ole  , Larsen Barasa  , Erwin Ferry Manurung  , Abdul Rachman
Published: November 2024

This research examines the effectiveness of sustainability initiatives within the maritime sector, focusing on their environmental and economic impacts. Through qualitative analysis of perspectives from maritime professionals, educators, and graduates, the study identifies key successes and challenges in implementing sustainability programs. Larger maritime companies have shown significant progress in reducing greenhouse gas emissions and improving operational efficiency, while smaller enterprises face financial and logistical barriers to adopting green technologies. The study also highlights the gap between sustainability education and its practical application in the industry, calling for stronger collaboration between academic institutions and industry leaders. The findings underscore the need for continued innovation, policy support, and investment to ensure that sustainability initiatives contribute to both environmental preservation and long-term economic growth in the maritime sector.
Strengthening Transparency and Accountability in Bureaucracy to Enhance Public Trust
Authors: Fadli Mappisabbi
Published: November 2024

Transparency and accountability are essential principles in good governance. However, there are still many challenges in achieving transparency and accountability within bureaucratic environments. This study aims to: 1) investigate the level of information openness and decision-making processes in government agencies; 2) identify best practices for enhancing transparency and accountability in bureaucracy; and 3) analyze the impact of transparency and accountability on public trust in the government. This research employs a qualitative approach using case study methods. Data was collected through in-depth interviews, document analysis, and observations in several central and regional government agencies. The results indicate that most government agencies have not yet optimized the implementation of public information openness principles. Decision-making processes tend to remain closed. However, some agencies have demonstrated good practices in enhancing transparency and accountability, such as using information technology, community involvement, and implementing effective complaint systems. The study also found that higher levels of transparency and accountability in bureaucracy correspond to higher levels of public trust in the government. This research concludes that transparency and accountability are crucial prerequisites for government bureaucracy to build public trust. Systematic and sustained efforts are needed to strengthen transparency and accountability practices within bureaucratic environments.
Pengaruh Brand Equity dan Online Customer Reviews (OCRs) terhadap Keputusan Pembelian Produk The Originote pada Aplikasi Tiktok Shop
Authors: Gabriella Niken A.S  , Abdul Waris
Published: November 2024

Tiktok is the only social media that is widely used by shoppers to see product reviews before deciding to buy. One of the most searched content is beauty products. Research was conducted to determine the effect of brand equity and online customer reviews (OCRs) on purchasing decisions for The Originote products on the Tiktok Shop Application. This study focuses on The Originote skincare using quantitative methods. The sample used was Generation Z in Malang City with a multistage random sampling technique. Data analysis includes instrument testing, descriptive, classical assumption testing and hypothesis testing. The results of the study show that both brand equity and OCRs variables significantly contribute to purchasing decisions. Partially and simultaneously, both variables have a significant influence on purchasing decisions. To improve and strengthen brand equity, The Originote needs to upgrade the outer packaging so that the product is protected from impact. On the other hand, to improve online customer reviews, The Originote needs to create an SOP for admins to reply to customer reviews.
Pengaruh Artificial Intelligence dalam Pembuatan Laporan Keuangan
Authors: Resalia Resalia  , Heni Nurmayana Soleha  , Alya Bahira  , Rudi Sanjaya
Published: November 2024

The presence of Artificial Intelligence (AI) has a significant impact on the preparation of financial reports, especially in terms of efficiency and accuracy. This article aims to examine the influence of AI on the process of preparing financial reports that were previously carried out conventionally and the challenges faced by companies in adopting it. This study uses a literature study method to identify trends and findings related to the use of AI in accounting. The results show that AI is able to improve operational efficiency, data analysis, and security, although there are challenges in its implementation, such as human resource adaptation and data security.