bluuebunny/crossref_metadata_2025 huggingface dataset:
Investigating Oscillations in Higher-Order Half-Linear Dynamic Equations on Time Scales
Authors: Hassan Ahmed M. , Askar Sameh S. , Alshamrani Ahmad M. , Botros Monica
Published: January 2025

This study presents novel and generalizable sufficient conditions for determining the oscillatory behavior of solutions to higher-order half-linear neutral delay dynamic equations on time scales. Utilizing the Riccati transformation technique in combination with Taylor monomials, we derive new and comprehensive oscillation criteria that cover a wide range of cases, including super-linear, half-linear, and sublinear equations. These results extend and improve upon existing oscillation criteria found in the literature by introducing more general conditions and providing a broader applicability to different types of dynamic equations. Furthermore, the study highlights the role of symmetry in the underlying equations, demonstrating how symmetry properties can be leveraged to simplify the analysis and provide additional insights into oscillatory behavior. To demonstrate the practical relevance of our findings, we include illustrative examples that show how these new criteria, along with symmetry-based perspectives, can be effectively applied to various time scales.
Introduction to Thermal Field Theory: From First Principles to Applications
Authors: Salvio Alberto
Published: January 2025

This review article provides the basics and discusses some important applications of thermal field theory, namely, the combination of statistical mechanics and relativistic quantum field theory. In the first part, the fundamentals are covered: the density matrix, the corresponding averages, and the treatment of fields of various spin in a medium. The second part is dedicated to the computation of thermal Green’s function for scalars, vectors, and fermions with path-integral methods. These functions play a crucial role in thermal field theory as explained here. A more applicative part of the review is dedicated to the production of particles in a medium and to phase transitions in field theory, including the process of vacuum decay in a general theory featuring a first-order phase transition. To understand this review, the reader should have good knowledge of non-statistical quantum field theory.
A Study on the Evolution of Emission Altitude with Frequency Among 104 Normal Pulsars
Authors: Luo Chaoxin , Xu Xin , Du Changrong , Zhi Qijun
Published: January 2025

Utilizing the databases from the European Pulsar Network (EPN), the Australia Telescope National Facility (ATNF), and published literature data, a geometric method was used to investigate the multifrequency emission altitude of 104 pulsars. We found that the evolution of emission altitudes with frequency for the majority of pulsars can be fitted using a power-law function with a normalization constant. In this work, it is found that the frequency evolution of pulsar emission altitude can be divided into three groups according to their different frequency dependencies of emission altitude (emission altitude decreases with frequency (Group A, η≤−0.1), keeps relatively constant with frequency (Group B, −0.1<η≤0.1), and increases with frequency (Group C, η≥0.1)), where η is the emission altitude variation rate. We also computed the emission altitudes across multiple frequency bands for these pulsars, thereby estimating the approximate range of the pulsar emission regions. We found that most pulsar emissions occur at altitudes of tens to hundreds of kilometers above the polar cap, with differences in emission altitude between the three groups becoming more clear at lower frequencies.
Exploring the Enigma of Particle Dynamics and Plasma Lensing Using Einstein–Euler–Heisenberg Black Hole Geometry
Authors: Ditta Allah , Mehmood Raja Sikander , Fiaz Muhammad , Bibi Bismillah , Deen Sana , Jaffar Rimsha , Mahmood Asif
Published: January 2025

The unified Einstein–Euler–Heisenberg theory is utilized to investigate the particle motion and weak gravitational lensing characteristics of black holes. This black hole solution is developed using spherically symmetric possessing electric and magnetic charges. Quantum electrodynamics corrections reveal a screening effect for BH electric charges and paramagnetic impacts on magnetic charges. We analyzed the motion of massive as well as massless particles by studying their effective potential, event horizon, photon orbit and inner circular orbit. It was demonstrated that magnetic and electric fields of spherically symmetric black holes have significant impact. Then, we also delve to study the weak gravitational lensing phenomenon. A comprehensive approach was employed to investigate this phenomenon and explore the angle of deflection of light rays near magnetically and electrically charged black holes.
Role of Landslides and Lithology in Within-Year Variability of Stream Runoff in Small Forested Catchments in the Outer (Flysh) Carpathians in Poland
Authors: Siwek Joanna P.
Published: January 2025

The aim of this research was to recognize the role of landslides and lithology in determining the within-year variability of stream runoff in small forested catchments. The research was conducted in 2022 in three areas located in the Outer Carpathians (Poland). In each of three areas, two small catchments were selected: a catchment with landslides and a control catchment. The presence of landslides increases the within-year variability of stream runoff: the degree of increase depends on the lithology of the catchment and the properties of landslides. These two factors determine the water storage capacity of the catchments. The greatest variability in stream runoff occurs in the catchment where impermeable shale dominates in lithology and landslides are numerous but relatively small. Smaller differences occur in the catchment mainly formed of thin-bedded sandstone, where there is one medium-sized landslide covering about 30% of the catchment area. The smallest differences occur in the catchment formed mainly of thick-bedded sandstone, where the entire landslide catchment is found within one large landslide. The size of landslides determines their depth, and consequently, the depth of landslide fissures: the deeper the system of landslide fissures, the longer the water transit time, and the greater the catchment storage capacity.
Fast Expansion of Surface Water Extent in Coastal Chinese Mainland from the 1980s to 2020 Based on Remote Sensing Monitoring
Authors: Chen Yi , Li Haokang , Song Song , Zhou Zhijie , Chen Changjun , Guo Chunling , Zheng Furong
Published: January 2025

High-resolution satellite imagery providing long-term, continuous information on surface water extent in highly developed regions is paramount for elucidating the spatiotemporal dynamics of water bodies. The landscape of water bodies is a key indicator of water quality and ecological services. In this study, we analyzed surface water dynamics, including rivers, lakes, and reservoirs, using Landsat images spanning from the 1980s to 2020, with a focus on the highly developed Coastal Chinese Mainland (CCM) region. Our objectives were to investigate the temporal and spatial variations in surface water area extent and landscape characteristics, to explore the driving forces behind these variations, to gain insights into the complex interactions between water bodies and evolving environmental conditions, and ultimately to support sustainable development in coastal regions. Our findings revealed that reservoirs constitute the largest proportion of surface water, while lakes occupy the smallest share. Notably, a trend of expansion in surface water extent in the CCM was observed, mainly from the construction of new reservoirs. These reservoirs primarily gained new areas from agricultural land and river floodplains in the early stages (1980s–2000), while a greater proportion of construction land was encroached upon by reservoirs in later periods (2001–2020). At the landscape level, a tendency toward fragmentation and complexity in surface water, particularly in reservoirs, was evident. Human interference, particularly urbanization, played a pivotal role in driving the expansion of water surfaces. While reservoir construction benefits water resource assurance, flood control, and prevention, it also poses eco-hydrological challenges, including water quality deterioration, reduced hydrological connectivity, and aquatic ecosystem degradation. The findings of this study provide essential data support for sustainable water resource development. These insights underscore the urgency and importance of integrated water resource management strategies, particularly in efforts aimed at conservation and restoration of natural water bodies and the scientific regulation of artificial water bodies. Balancing human development needs with the preservation of ecological integrity is crucial to facilitating a water resource management strategy that integrates climatic and socio-economic dimensions, ensuring sustainable water use and protection for future generations.
Microplastics as Emerging Contaminants: Challenges in Inland Aquatic Food Web
Authors: Swain Prajna Ritambhara , Parida Pranaya Kumar , Majhi Priti Jyoti , Behera Bijay Kumar , Das Basanta Kumar
Published: January 2025

Microplastic (MP) pollution in inland water bodies, such as rivers, lakes, and reservoirs, is a growing environmental concern, yet research on its ecological impacts in freshwater ecosystems remains limited compared to marine environments. Microplastics, defined as particles smaller than 5 mm, have been detected in freshwater systems globally, and their presence is widespread across diverse aquatic habitats. This review examines the sources, distribution, persistence, and ecological consequences of microplastics in freshwater ecosystems, emphasizing their bioaccumulation in organisms from plankton to fish, and the potential risks to human health through microplastic-contaminated fish consumption. Ingestion of microplastics by aquatic organisms can cause physical harm, such as entanglement, and chemical toxicity, including oxidative stress and the accumulation of harmful substances. The trophic transfer of microplastics through the food web raises concerns about higher-level organisms, including humans. Despite these risks, significant knowledge gaps exist regarding the long-term effects of microplastics on freshwater ecosystems. The review calls for improved monitoring, mitigation strategies, and regulatory frameworks to address this issue. Further research is needed to understand the full extent of microplastic pollution in freshwater environments and its impacts on both biodiversity and human health.
Power Converter Fault Detection Using MLCA–SpikingShuffleNet
Authors: Wang Li , Zhu Feiyang , Jiang Fengfan , Yang Yuwei
Published: January 2025

With the widespread adoption of electric vehicles, the power converter, as a key component, plays a crucial role. Traditional fault detection methods often face challenges in real-time performance and computational efficiency, making it difficult to meet the demands of electric vehicle power converters for efficient and accurate fault diagnosis. To address this challenge, this paper proposes a novel fault detection model—SpikingShuffleNet. This paper first designs an efficient SpikingShuffle Unit that integrates grouped convolutions and channel shuffle techniques, effectively reducing the model’s computational complexity by optimizing feature extraction and channel interaction. Next, by appropriately stacking SpikingShuffle Units and refining the network architecture, a complete lightweight diagnostic network is constructed for real-time fault detection in electric vehicle power converters. Finally, the Mixed Local Channel Attention mechanism is introduced to address the potential limitations in feature representation caused by grouped convolutions, further enhancing fault detection accuracy and robustness by balancing local detail preservation and global feature integration. Experimental results show that SpikingShuffleNet exhibits excellent accuracy and robustness in the fault detection task for power converters, fulfilling the real-time fault diagnosis requirements for low-power embedded devices.
SUSTAINABLE CULTURAL TOURISM IN THE ERA OF SUSTAINABLE DEVELOPMENT
Authors: Sihombing Irene Hanna H. , Suastini Ni Made , Puja Ida Bagus Putu
Published: January 2025

Cultural sustainability has recently emerged as a significant trend in the tourism industry, driven by increased awareness of travel's environmental impacts and the need to preserve natural resources for future generations. Sustainable cultural tourism emphasizes protecting and valuing cultural heritage while ensuring that tourism activities respect the environment and the integrity of local cultures. For it to be genuinely comprehensive, sustainable cultural tourism must be integrated into national development strategies, aligning tourism goals with broader sustainable development objectives. Cultural tourism plays a unique role as both a catalyst and enabler of sustainable development, fostering economic resilience, social cohesion, and environmental conservation. This paper explores the relationship between cultural tourism and sustainability by examining how sustainable cultural tourism supports sustainable development goals. Essential to this approach is preserving and managing cultural heritage, involving local communities in decision-making, promoting effective conservation practices, supporting rural development, and addressing issues like over-tourism, which can lead to the loss of authenticity and over-concentration in popular destinations. Ultimately, sustainable cultural tourism is not only about conserving the past but also about creating a harmonious relationship between culture and tourism that benefits present and future generations. Through its focus on local empowerment, responsible resource use, and respect for cultural diversity, sustainable cultural tourism offers a forward-looking approach, ensuring that tourism continues to drive positive social and environmental change.
Penyediaan Akses bagi Penyandang Disabilitas pada Penyelenggaraan Tau-Tau Fest
Authors: Fiona  , Bagus Githa Adhitya M  , Cucu Kurniati
Published: January 2025

Equality of opportunity in all aspects for persons with disabilities is a fundamental right enshrined in Indonesian legislation and international treaties, namely the United Nations Convention on the Rights of Persons with Disabilities (UNCRPD). One such aspect is participating in arts and cultural activities such as music festivals. Therefore, this research aims to identify the provision of access for persons with disabilities in organizing Tau-Tau Fest, a music festival in Indonesia. The method used is qualitative with data collection techniques in interviews and observation. The results show that although some facilities and services already exist, some aspects require adjustments to meet the needs of people with disabilities, such as viewing areas, queue lines, accessible signage, and staff training on disability awareness. Therefore, recommendations in the form of accessibility plans are given to event organizers and similar music festivals.
Motivasi Pemandu Wisata Terkait Pay as You Wish Walking Tours di Bandung Good Guide
Authors: Nanlohy Arzeta Bilbeana , Martono Ecklesia Femmy Eideltraut , Billah Nidzam Baldan , Retno Syafitri  , Subandi Mohamad Robbith
Published: January 2025

The motivation of tour guides can be influenced by various factors, such as job satisfaction, financial incentives, and social interaction. This study aims to examine the motivation of tour guides at Bandung Good Guide under the Pay As You Wish payment system. The author employs a qualitative approach, conducting in-depth interviews with experienced tour guides who have led tours for Bandung Good Guide. The findings will reveal the motivational factors influencing tour guides at Bandung Good Guide within the Pay As You Wish framework. This research holds significant implications for tour guides in the travel industry, particularly in promoting sustainable tourism through walking tours
Pelatihan Pengelolaan UMKM dalam Penyelenggaraan Event
Authors: Wirata I Nengah , Citrawati Luh Putu , Kusumarini Indah , Paramita Ratri , Ariasri Nyoman Reni , Widaharthana I Putu Esa , Arjaya Ketut , Suprastayasa I Gusti Ngurah Agung , Swandewi Ni Kadek , Sumadi I Gede , Asmarani I Gusti Ayu Ratih
Published: January 2025

Desa Panji memiliki beragam produk usaha menengah dan kecil yang beberapa diantaranya sudah sampai tingkat nasional. Selain sebagai desa wisata, Desa Panji juga berhasil meraih juara 1 badan usaha milik desa tingkat nasional dan Desa Cemerlang terbaik se-Bali Nusra tahun 2022 dari 53 desa finalis. Potensi produk UMKM tersebut masih kurang terkelola dengan baik, terutama dalam berbagai event dan mendukung pengembangan pariwisata. Oleh karena itu, Program Studi Manajemen Event Politeknik Pariwisata Bali memberikan pengabdian kepada masyarakat berupa pelatihan. Topik pelatihan tersebut adalah Pengelolaan UMKM dalam rangka Festival Desa. Peserta pelatihan adalah seluruh pemangku kepentingan Desa Panji, khususnya UMKM dan pelaku pariwisata. Luaran dari kegiatan ini adalah peserta mampu membuat perencanaan bisnis UMKM, desain produk yang lebih menarik, serta pengelolaan pameran UMKM dalam suatu event. Kegiatan pengabdian kepada masyarakat ini diharapkan dapat meningkatkan tata kelola produk UMKM dan bersinergi dengan pengembangan pariwisata Desa Panji.
Santri Digital Literacy Training for Entrepreneurship
Authors: Rumba Rumba
Published: January 2025

The santri digital literacy training for entrepreneurship is designed to enhance the digital skills of entrepreneurs in navigating the challenges of the digital era. Scheduled on June 26, 2024, at Pondok Pesantren At-Tamimy Berangsak in Central Lombok, this training aims to improve participants' understanding and application of digital technologies for managing and growing their businesses. The program will cover digital marketing strategies, data analysis, social media management, and e-commerce platforms. Keynote speakers include a representative from the Executive Board of Better Together Indonesia Foundation Jakarta and a lecturer from the Entrepreneurship Unit of Politeknik Pariwisata Lombok, who will provide insights on digital strategies and practical case studies. This hands-on training is intended to empower entrepreneurs with relevant skills and effective strategies to enhance their competitiveness in the ever-evolving digital market.
Pemetaan Pola Perjalanan Wisata
Authors: DyarBirru Rifky Izazi , Jauhari M. Irfan , Alawi Muhammad Sadni , Nursaida Hariza Alvi , Ayuliyanti Maria , Alfarizi Salman , Handika Wawan , Royanow Achlan Fahlevi , Fahmi Saiful
Published: January 2025

Studi ini membahas pemetaan pola perjalanan wisata yang bertujuan untuk mengidentifikasi pola perjalanan yang dilakukan oleh wisatawan di Desa Wisata Genggelang, Kabupaten Lombok Utara, Nusa Tenggara Barat, Indonesia. Penelitian ini menggunakan metode deskriptif kualitatif dengan teknik pengumpulan data melalui observasi, wawancara, dan dokumentasi. Secara bersamaan, observasi juga memungkinkan peneliti untuk berinteraksi langsung dengan masyarakat lokal guna memahami budaya dan nilai-nilai yang terkait dengan pariwisata di Desa Wisata Genggelang. Konsep pemetaan pola perjalanan memiliki peran penting dalam pengelolaan destinasi, terutama untuk desa wisata seperti Desa Wisata Genggelang. Dengan memahami pola perjalanan, pengelola dapat merancang program dan paket wisata yang lebih terarah dan berkelanjutan. Melalui penelitian ini, diharapkan dapat diidentifikasi pola perjalanan yang dominan di Desa Genggelang, serta faktor-faktor yang mempengaruhi pilihan wisatawan untuk mengunjungi atraksi tersebut. Hasil penelitian ini akan membantu pengelola pariwisata dalam merancang program dan paket wisata yang lebih efektif, meningkatkan kualitas pelayanan, dan mengembangkan potensi wisata yang ada. Dengan demikian, Desa Wisata Genggelang dapat menjadi desa wisata yang semakin menarik dan berkelanjutan, serta memberikan sumber pendapatan bagi masyarakat setempat.
Análise da microbiota fúngica anemófila em ambientes residenciais
Authors: Menezes Maria Chrystina Lima , Araújo Maria Anilda dos Santos , Souza Larissa Isabela Oliveira de
Published: January 2025

A presença de fungos em ambientes é basicamente inevitável, pois se dispersam pelo ar atmosférico. Fungos apresentam elevada resistência a variações ambientais, incluindo temperatura, umidade, pH e concentrações de oxigênio. A inalação de propágulos fúngicos, como esporos, pode atuar como um fator desencadeante de doenças alérgicas respiratórias, incluindo asma, rinite e sinusite. O presente estudo teve como objetivo analisar a presença de fungos com potencial patogênico que possam causar processos alérgicos em moradores de residências da cidade de Maceió – AL. Foram coletadas amostras do ar para isolamento de fungos. Seis placas de Petri foram expostas em diferentes cômodos em cinco residências na cidade de Maceió, utilizando a técnica de sedimentação de esporos. Após a coleta foram devidamente etiquetadas e transportadas ao laboratório para posterior análise. Após o isolamento e identificação, verificou-se o crescimento de 144 colônias no total. Dentre elas gêneros fúngicos como Aspergillus sp. (70%), Penicillium sp. (2%), Fusarium sp. (4%), Cladosporium sp. (1%) Mycelia sterilla (20%) e leveduras (3%). Houve uma grande variação na quantidade de colônias entre as moradias, com a Residência 4 apresentando o maior número, enquanto a Residência 5 tem o menor. Alguns dos gêneros citados estão associados a doenças respiratórias, incluindo asma, rinite, sinusite alérgica, aspergilose e fusariose. Os resultados evidenciam a importância de medidas preventivas, como a ventilação e limpeza adequada de ambientes residenciais, para reduzir o acumulo de bioaerossóis no ambiente e diminuir os riscos à saúde.
Diarreia congênita secundária a Doença de Inclusão das Microvilosidades ligada ao gene MYO5B: relato de caso
Authors: Pires Aléxia Morgana da Silva Abreu Caires
Published: January 2025

A Doença de Inclusão das Microvilosidades (DIM) é uma doença ligada ao gene MYO5B que se manifesta como uma diarreia secretora intratável, com necessidade de nutrição parenteral, com curso natural da doença frequentemente fatal. Objetiva-se relatar o caso de um lactente com quadro clínico de diarreia secretora congênita, com diagnóstico molecular (Exoma) e histológico e imunohistoquímico compatíveis com a Doença de Inclusão de Microvilosidades. Trata-se de um pré-termo tardio, com 36 semanas de gestação, que ao quinto dia de vida, enquanto em aleitamento materno exclusivo, o paciente evoluiu com aumento da frequência de evacuações de aspecto aquoso, levando à desidratação severa e perda de peso significativa. Após investigação em unidade de referência, recebeu diagnóstico de Doença de Inclusão das Microvilosidades (DIM). Evoluiu à óbito enquanto aguardava transplante intestinal em decorrência de choque séptico. Desse modo, a doença de Inclusão das Microvilosidades (DIM) causa diarreia congênita grave e é diagnosticada por biópsias duodenais e exames imunohistoquímicos, além de testes genéticos que confirmam mutações no gene MYO5B, identificadas desde 2008. O tratamento principal é a Nutrição Parenteral Total (NPT), apesar das complicações, e o transplante intestinal é a única solução definitiva a longo prazo. Pesquisas em medicina regenerativa e organoides intestinais buscam novas alternativas terapêuticas para melhorar o manejo da doença, o que permite concluir que a doença requer diagnóstico precoce para evitar complicações fatais, sendo a identificação de mutações genéticas é essencial para entender a doença e orientar o aconselhamento genético.
Novel three-dimensional semi-rigid ring annuloplasty for concomitant tricuspid valve regurgitation
Authors: Tarabal Bernardo Parreiras Guimarães , Silva Marcus Vinícius de Paula da , Ruiz Gabriela Zamunaro Lopes , Caldas Mônica Maria Costa , Silva Thuanny Granato Fonseca , Coppola Fernanda de Figueiredo , Nunes Maria do Carmo Pereira , Asil Anas Sarraj , Gelape Cláudio Léo
Published: January 2025

Objective: Several two and three-dimensional tricuspid valve annuloplasty rings have been used to deal with functional tricuspid valve regurgitation. However, residual or recurrent valve regurgitation occurs in 20% to 30% of patients. Here we report on the first experience with a new 3-dimensional semi-rigid annuloplasty ring. Methods: From January 2018 and December 2021, 20 patients underwent tricuspid valve annuloplasty for functional tricuspid valve regurgitation using a new 3-dimensional semi-rigid Star annuloplasty ring (manufactured by LABCOR®). Eighteen patients had associated mitral valve replacement; one had aortic and mitral valves replacement; and one a mitral valve repair. The tow year’s follow-up rate was 100% (cumulative total 20 patient-years). Results: Reduction of left atrium diameter (57.7 ±  8.4mm preoperatively to 51.1 ± 8.7mm post-operatively), reduction of tricuspid annulus (42 ± 16.3mm preoperatively to 26 ± 3.8mm postoperatively), reduction of tricuspid valve regurgitation, and a significant improvement of functional capacity on a clinical evaluation from  an average of class 2.75 ± 0.7 preoperatively to class 1.2 ± 0.6 at the end of follow-up. Conclusions: This novel 3-dimensional semi-rigid Star annuloplasty Ring® is safe, with no patient experiencing atrioventricular disjunction or needed pacemaker implant, and it is effective especially in patients with severely dilated tricuspid annulus and right ventricular dysfunction.
Análise dos desfechos dor e funcionalidade pós abordagem cirúrgica na fratura supracondiliana de úmero em pediatria: follow up em 30, 60 e 90 dias
Authors: Soares Meyrian Luana Teles de Sousa Luz , Melo Ingrid Mirele da Silva , Rolim Tale Lucas Vieira
Published: January 2025

Introdução. A fratura supraocondiliana de úmero corresponde a cerca de 70% dos traumas em membro superior na infância. Objetivo. Analisar os desfechos dor e funcionalidade na fratura supracondiliana de úmero em pediatria em um hospital de referência do Recife e seu seguimento nos próximos 90 dias. Método. Foi realizado um estudo quantitativo, cuja amostra foi composta por crianças e adolescentes internadas na enfermaria de trauma, sendo incluídas por apresentar fratura supracondiliana de úmero diagnosticada através do exame complementar e excluídas aquelas que apresentaram refratura no mesmo segmento, infecções ativas ou déficit cognitivo que não permitisse responder as perguntas solicitadas. Foi realizada a coleta de dados antropométricos, sócio-demográficos e clínicos, com mensuração da mobilidade pela goniometria e da força pela dinamometria, bem como submetidos ao questionário de qualidade de vida SF-12. Resultados. 29 crianças, cuja idade média foi de 6, 55 (±3, 10), peso médio de 24,78 (± 7,82), com 96,55% sem comorbidades, sendo 93,1% das etiologias associada a baixa energia. 77,7% das fraturas eram classificadas como Gartland I e II, com o tempo médio entre o trauma e a cirurgia de 2, 04 (± 1,51). Quando comparado o mesmo parâmetro no pós-operatório imediato o percentual foi de 69,56%. Dor e edema corresponderam a 8,69% e 30,43% respectivamente. Após 30 dias, 51,72% realizaram o seguimento, dos quais 80% referiram não estar realizando fisioterapia e 53,33% com queixas de dor. Conclusão. As orientações recebidas na alta e o acompanhamento ambulatorial são fatores primordiais para evitar dor persistente e restrição de mobilidade.
Modelo basado en la cadena de valor para el establecimiento del costo de una carrera de pregrado
Authors: Fernández Javiera Constanza Sagredo , Pavés Hernán Rocha , Agüero Erika Irene Cid
Published: January 2025

El costo involucrado en una Carrera de Pregrado es un problema que se ha enfrentado desde diferentes ángulos, sin embargo, sigue siendo un fenómeno que alcanza en el caso de Chile, incluso a las Universidades del Estado. Nosotros enfrentamos la situación bajo la construcción de un modelo en donde utilizamos como base las actividades que desarrolla una organización y que se definen en función de la producción en su acepción genérica derivada de Porter (2002) en la Cadena de Valor. Está, definió un conjunto de actividades que interactúan y contribuyen a una posición de costo. El Valor es lo que un comprador está dispuesto a desembolsar por lo que la organización le proporciona (Olmedo, Olmedo y Plazaola, s.f.), por lo tanto, el valor que exceda el costo establece un superávit organizacional. En el caso del funcionamiento de una Carrera Universitaria, las actividades primarias son consideradas en este estudio, como los cursos anuales desarrollados y como actividades de apoyo, aquellas generadas centralizadamente que cooperan con las actividades primarias. Los resultados son coherentes con el problema y reflejan entre otros, la carga que significan las horas adicionales asignadas a una asignatura de un período particular y el costo asociado a períodos en particular.
Morphometric analysis of Androctonus australis (Linnaeus, 1758) from the northern Algerian Sahara (Scorpiones, Buthidae)
Authors: Djelloud-Souilem Zineb , Bissati Samia , Chedad Abdelwahab , Souilem Zineb , Rouari Linda , Sadine Salah Eddine
Published: January 2025

Androctonus australis (Linnaeus, 1758) is one of the most abundant scorpions in North Africa. The high phenotypic variability, such as color variations relating to these scorpions, led different authors to classify several different subspecies. Furthermore, Lourenço (2005) reported that A. australis is a unique species that presents a certain degree of polymorphism. The present study was carried out in the Northern Algerian Sahara and aims to investigate the effect of the region on the morphometric variability of A. australis based on body measurements (total length, cephalothorax length, abdomen length and tail length) of 10 individuals of both sexes from the three localities: El-Oued, Ouargla and Ghardaïa. Our results show that despite the large difference in size of the specimens studied and coloration and the significant correlation exists between the different parts of the scorpion body, the stations do not have a significant effect on the morphological variation of A. australis.
K-Mean Clustering of Holstein Friesian Dairy Cattle using Genomic Breeding Values
Authors: Hoşgönül Buğra , Önder Hasan
Published: January 2025

Clustering refers to algorithms to uncover such clusters in unlabeled data. Data points belonging to the same cluster exhibit similar features, whereas data points from different clusters are dissimilar to each other. The identification of such clusters leads to segmentation of data points into a number of distinct groups. In this study it was aimed to classify the 492 Holstein Friesian dairy cattle with determining the optimum number of clusters using the genomic breeding values (GBVs) calculated with 13250 SNPs using GBLUP for milk yield (kg), milk fat (%), milk protein (%), milk lactose (%), and milk dry matter (%). Results showed that the optimum number cluster was determined as two for the genomic breeding values. Determining the most appropriate number of clusters, it provides great convenience in the selection of breeding animals after determining the animals that can provide optimum efficiency in the herd or the animals that need to be eliminated from the existing herd. As a result, it can be said that the k-means method can be used successfully in clustering animals for genomic breeding values, but for this, at first, the optimum number of clusters must be determined.
The development of residential areas in the Boseong area from around B.C. to the 6th century B.C
Authors:   THE RESEARCH INSTITUTE FOR THE MAHAN-BAEKJE CULTURE, Choi Seong Hoon
Published: January 2025

In this article, we looked at the development of residential areas from around B.C. to the 6th century B.C. in the Boseong area, which has not been dealt with so far. Based on the distribution of excavated and investigated remains, it was divided into the Boseong River basin and the southern coastal area, and tried to classify the types of relics that could be identified. As a result, it was largely divided into four periods due to changes in residential sites and excavated relics.
Phase I is the period when clay belt earthenware remains and hard plain earthenware is the main. In the second period, hard unwritten earthenware was excavated a lot, and printed earthenware began to appear. During this period, residential areas will be expanded to the surrounding area. In Phase III, residential areas are most actively constructed. It increases significantly in number, and accordingly, the density becomes very high. Four residential areas will be identified. As for the relics, a small amount of hard unwritten earthenware is identified by the excavation of printed earthenware. During the IV period, hard earthenware was identified in residential areas, and foreign relics were excavated. The interior facilities of the residential area change to a relatively developed structure. The relics are identified as Gayagean or Baekje earthenware along with new models that were not found in the previous period.
The residential areas of the Boseong area from around B.C. to the 6th century B.C. have more square systems than the original ones, and four of them are rarely identified. This may have been closed due to the large number of mountainous areas in the Boseong River basin, so it seems that the inflow of culture from outside was delayed and developed on its own. Since the southern coast area is a relatively open place, it can be said that the flow of culture is fast and various changes have occurred.
Статистическая оценка уровней излучения антенн в исследованиях электромагнитной совместимости
Authors: Ястребцова О.И.
Published: January 2025

В статье рассмотрен вопрос статистической оценки диаграмм направленности антенн для исследований электромагнитной совместимости. Представлен анализ статистического распределения величины отклонения излучения антенны от «пиковой» огибающей, что позволило сформулировать модель прогнозирования уровней излучения для любого процента времени. На данный момент в исследованиях электромагнитной совместимости используются «пиковые» и «средние» огибающие, соответствующие 0% и приблизительно 50–60% времени, в течении которых уровень излучения может быть превышен. Разработанная модель позволяет расширить понятие огибающих боковых лепестков на случай произвольного процента времени. Она применима к направленным антеннам с прямоугольными и круглыми раскрывами с различными амплитудными распределениями, т.е. например, к зеркальным антеннам и антенным решеткам. Модель может быть использована в исследованиях электромагнитной совместимости, проводимых методом Монте-Карло, или в расчетах единичных помех с использованием защитных критериев, которые могут превышаться в некотором заданном проценте времени.

The article considers the issue of statistical assessment of antenna radiation patterns for electromagnetic compatibility studies. An analysis of the statistical distribution of the deviation of antenna radiation from the “peak” envelope is presented, which made it possible to formulate a model for predicting radiation levels for any percentage of time. Current electromagnetic compatibility studies use “peak” and “average” envelopes corresponding to 0% and approximately 50-60% of the time during which the radiation level can be exceeded. The developed model allows to extend the concept of side lobe envelopes to the case of any percentage of time. It is applicable to directional antennas with rectangular and circular apertures with different amplitude distributions, i.e., for example, to reflector antennas and antenna arrays. The model can be used in electromagnetic compatibility studies conducted using the Monte Carlo method or to calculate single interference using protection criteria that can be exceeded in a certain percentage of time.
Модель оценки защищенности элементов телекоммуникационного оборудования
Authors: Саенко И.Б. , Васин А.В. , Марлей В.Е. , Лебедев С.Л. , Ермаков А.В.
Published: January 2025

Предложена математическая модель, позволяющая оперативно рассчитать текущий уровень защищенности оборудования пакетной коммутации сетей связи, в том числе при изменении любого его показателя (настройки). Кроме того, параметры модели позволяют сделать прогноз состояния защищенности оборудования на ближайшую перспективу.

A mathematical model is proposed that allows us to quickly calculate the current level of security of packet switching equipment for communication networks, including when changing any of its indicators (settings). In addition, the model parameters allow you to make a forecast on the state of equipment security in the near future.
Perancangan Sistem Customer Relationship Management (CRM) Berbasis Web pada Senyaman Resto & Coffee
Authors: Rahim Muhamad Aulia , M Mardison , Jamhur Annisak , Rani Larissa Navia
Published: January 2025

Marketing or promotional activities that are still less effective are a business obstacle, especially at Senyaman Resto & Coffee. This can be seen from the large amount of sales transaction data, sales transaction data is still recorded in books and records. Based on this, this research aims to design a Customer Relationship Management (CRM) system to increase promotional activities and improve services to Senyaman Resto & Coffee consumers. This CRM system design was built using PHP and MySql programming. CRM system design also adopts design tools using Unified Modeling Language (UML). Based on performance testing of the CRM system that has been designed, it appears that the system can provide features for creating sales and customer reports. These results had quite an impact on sales data processing which was built better than before. The contribution of this research also provides efficiency in the promotion and sales management processes that occur at Senyaman Resto & Coffee
Changes in the Marriage Form of Baekje Royal Family and the Status of Queen and Prince
Authors:   Soc Stud Early Kor His, Choi Yoo-lim
Published: January 2025

This article attempted to divide the marriage type of the Baekje royal family focusing on Hanseong Period. And in this regard, the change in the status of queens and princes was reviewed. The Baekje royal family had long-term marriages with some aristocrats. The Baekje royal family had the purpose of uniting Baekje society and the aristocrats were given the right to produce a queens by joining in. The Baekje royal family also married other countries. Marriage with other countries prioritized diplomatic purposes because compared to marriage to Baekje aristocrats, the obligation to hold ancestral rites was not greater. King Gaero had a same surname marrige once. This should be understood as part of the strengthening of King Gaero's royal authority. Baekje's royal family generally preferred the opposite surname marriage. As a result, there was a difference in status between the queens. 后 and 夫人 began to be distinguished in the mid-to-late Hanseong Period. The status between the queens also influenced the status of their children, and the distinction between 嫡 and 庶 was formed.
Immigrant from Baekje in Ancient Japanthrough Todai-ji : Focused on the Gold Tributeof the Kudaranokonikishi Kyofuku
Authors:   Soc Stud Early Kor His, Choi Eun-young
Published: January 2025

The founding of Todai-ji and Daibutsu were important national projects promoted by the Shomu tenno to solve the unstable political situation and social situation through Buddhism. Therefore, it was natural for monks, government officials, and engineers who were the most talented to be employed in such large-scale projects at that time. And there were people from Baekje descendents who had knowledge, skills, and high levels of culture in that projects. The Japanese government appreciated their talent and gave them reasonable rewards.
As a result, Baekje knowledge and skills naturally melted in the process of accepting Buddhism in ancient Japan and founding of the state. It can be evaluated that the Baekje immigrant played an important role in the formation of ancient Japanese culture and the composition of the national system.
Patterns and Characteristics of Chinese Pottery Excavated in Baekje Area
Authors:   Soc Stud Early Kor His, Kwon So-hyun
Published: January 2025

This paper aims to examine the period-specific aspects of Chinese ceramics imported into Baekje and to understand the characteristics of imported Chinese ceramics by comparing them with the aspects excavated in China where they were produced. By examining what types of Chinese ceramics were imported, we understand the characteristics and roles of Chinese ceramics imported into Baekje and further examine the influence of Chinese ceramics on Baekje. In particular, we examine the similarities and differences between the aspects and characteristics of Chinese ceramics excavated in the Baekje region and those excavated from historical sites in China to understand their characteristics.
When comparing the Chinese ceramics excavated in the Baekje region with the appearance of the Six Dynasties and Sui and Tang Dynasties ceramics excavated from relics in China, it can be seen that only a very limited number of types were imported. In addition, there is no celadon with a strong decorative form, and there is no hieroglyphic inscription that depicts people or various shapes. This proves that the types of Chinese ceramics that appear in large numbers in the Baekje region were not imported for burial purposes, but were imported and used as everyday containers and buried together with other burial items. In addition, among the imported ceramics, the celadon inkstone and celadon bowl were converted into earthenware during the Baekje period and made into earthenware bowls and inkstones, which suggests that inkstones and bowls were the objects of special interest to the Baekje people when they encountered Chinese celadon. Understanding and analyzing the current status of excavations in relics in China is very important because it allows us to examine not only the actual state of the burial, but also the appearance and changes in the celadon produced by period, and the process of change in the nature of the burial items through organic relationships with burial items made of other materials. In the future, this part is expected to be further supplemented and play a preliminary role as comparative data with China in relation to Chinese ceramics in the Baekje region.
Choi Chi-won and Yangyang Lee Sang-gong at the time of the Tang Dynasty
Authors:   Soc Stud Early Kor His, Cho Bum-hwan
Published: January 2025

Choi Chi-won, a prominent scholar during the Tang Dynasty, wrote extensively during his time in China. His works from the Gobyeong period were compiled into the “Gyewon Pilgyeong Collection”. However, his letter to Lee Sang-sang in Yangyang was published in the “Gobunjip” instead, as it was not written during his time in Gobyeong.
Previously, Lee Sang-sang was mistakenly identified as Yangjaesa Yiul. Recent research has clarified that Lee Sang-sang was actually a distant relative of Choi Chi-won, not Yiul. This discovery disproves earlier studies suggesting that Choi Chi-won met Yiul before passing his civil service examination.
Choi Chi-won's visit to Yangyang occurred after he passed the imperial examination and while en route to his new appointment as a government official (Yulsuhyeonwi). He was traveling to Luoyang for this position when he passed through Yangyang. A local official named Baezol recommended he visit his relative, Lee Sang-sang, who was serving as Yang Ju-sa (a local administrative position) at the time.
Choi Chi-won stayed in Yangyang for about 50 days, hosted by the local government due to his relative's consideration. The letter he wrote to Lee Sang-sang serves to: Confirm Lee Sang-sang's identity as Yang Ju-sa, not Yiul. Document Choi Chi-won's brief stay in Yangyang while traveling to his new post. Express gratitude for the hospitality he received.
This clarification provides a more accurate understanding of Choi Chi-won's travels and relationships during this period, correcting previous misinterpretations in historical research. It emphasizes that Choi Chi-won's interaction with Lee Sang-sang was a brief stopover during his journey to a new official position, rather than a meeting before his examination as previously thought.
Study on the Production Period of Auspicious Animals and Grapes Bronze Mirrors in Tang Dynasty and its Transmission to Korea and Japan
Authors:   Soc Stud Early Kor His, Choi Ju-yeon
Published: January 2025

Auspicious Animals (mirror with images of auspicious animals and grapes) is characterized by the patterns of ancient Chinese auspicious animal character and newly introduced grapes, and it is the most colorful and popular bronze mirror among the Tang’s bronze mirror. The study on the production period and the transmission of Korea-Japan through cases excavated from articles with Chronograms from the Tang tombs among the pattern of Auspicious Animals Grapes produced at the time.
The Auspicious Animals and Grapes Bronze Mirror of the time follows a typical bronze mirror form, but the pattern expressing the inner and outer parts shows a different pattern than before, and is characterized by filling the back of a high relief structure with ornate patterns. These Auspicious Animals and Grapes Bronze Mirror views were classified into types I and II based on elements such as the position of the auspicious animals and grape patterns, the shape of New, and other pattern arrangements. Type I features auspicious animals expressed in the inner and outer parts, and there is a circular New. Type II has a common point where the pattern composition becomes complicated, and the New changes to the auspicious animals. The Auspicious Animals and Grapes Bronze Mirror, which was analyzed based on the two types, reviewed the production period of the excavated articles with Chronograms from the Tang tombs. The period divided into the third period was divided into the period of development, the period of prime time, and the period of decline, and most of the The Auspicious Animals and Grapes Bronze Mirror excavated from the Tang Dynasty was produced during the period II.
The Auspicious Animals and Grapes Bronze Mirror, which was popular at the time, was also introduced to neighboring countries such as Korea and Japan. The two countries accepted the Auspicious Animals and Grapes Bronze Mirror from a country called Tang, but the aspect was different. Except for the The Auspicious Animals and Grapes Bronze Mirror excavated from Maro mountain fortress(馬老山城), Korea is presumed to have introduced the eastward trend that was cast from China as there remain examples of poor casting. On the other hand, in Japan, four Auspicious Animals and Grapes Bronze Mirror are held in Shosoin(正倉院), and they are in good casting condition and have elaborate and detailed pattern expressions. This particular example is believed to have been handed down to by Japanese missions to Tang China dispatched to Tang from Japan at the time, and the period was considered to be the first half of the 8th century, when it was focused on accepting cultural elements. Therefore, it can be seen that The Auspicious Animals and Grapes Bronze Mirror of the Tang Dynasty was one of the representative admiration that spread to surrounding countries in the 8th century, when production was popular.