bluuebunny/crossref_metadata_2025 huggingface dataset:
The uncertain frontier
Authors: Bánffy Eszter , Whittle Alasdair
Published: October 2024

Long archaeological debate on the process of Neolithisation across Europe has been resolved at a broad level, thanks to aDNA and other scientific investigations, in favour of significant migrations virtually everywhere. This development has coincided with the establishment of more robust and generally more precise chronologies, and in the long run the historical process of change brought by Neolithic migrants was irreversible. However, the emergent big picture can and should still be examined in much further detail. Some significant implications for the understanding of mobility and migration have been explored, but there is plenty of scope for better integration of archaeological and scientific, especially archaeogenetic, investigations. This can reveal important dimensions of the process of colonisation and the initial establishment of Neolithic settlement, which appears often to have been small-scale at the outset; prone to adjustment, experiment, reversal and even failure; and open to contacts with indigenous people. We support these claims with a series of brief case studies principally from the northern Balkans, the Carpathian basin and northern central Europe to build a simple model of frontier conditions which could have implications for the study of initial Neolithisation across Europe as a whole.
Early Iron Age urbanism in the south-eastern Alpine region
Authors: Vojaković Petra , Gruškovnjak Luka , Prijatelj Agni , Mušič Branko , Horn Barbara , Črešnar Matija
Published: October 2024

Largescale excavation at the Iron Age and Roman period Pungrt hillfort (8th century BC to 2nd century AD) has revealed a distinctly urban character of the settlement in its best-preserved Late Hallstatt phase from the 6th to 4th centuries BC. This study provides an important contribution to the understanding of the settlement’s internal organization and its socioeconomic development. By examining the previously unaddressed phenomena of settlement nucleation, population aggregation and urbanism along with the possibility of earlystate formation, the paper broadens the narrative on the fundamental social and political development in the southeastern Alpine region during the Early Iron Age and contributes to the wider field of early urbanism research.
SELECTION PARAMETERS OF AN ALTERNATIVE STEEL MATERIAL FOR PRODUCTS OF HIGH RESISTIVITY FOR INTERNAL PRESSURE
Authors: Manas Kumar Barik  , Surya Sourav Dhal  , Abhijit Dash  , Ritesh Kumar Hui  , Monalin Mohanty
Published: October 2024

A practical example concerning the selection of alternative steel materials to substitute steel of chemical composition OXH3MΦA in a part of product subjected to high internal pressure is carried to cover mainly the effect of heat treatment on the microstructures and mechanical properties of an investigated high strength low alloy (HSLA) steels1.6580 and 1.7225. The mechanical properties and microstructure of steels material were investigated.
The investigation results were compared with used steel OXH3MΦA. The desired properties have been achieved in these steels by properly designed heat treatment. The results are quite well adopted and show that the investigated steels have excellent combination of tensile strength, impact strength and ductility which is very attractive for industrial use and also it is found that, the heattreatment and steel material costs of the investigated steels were more and more less than the old used ones.
Blockchain-Based System For Handling Academic Records
Authors: Dr. T. Sathish Kumar  , Nimmagadda Aditya Srinivas  , Vineela Varshini Kunchala  , Shiva Charan Reddy Kallem  , Vemulapalli Somashekar Rao
Published: October 2024

The Academic Records Blockchain-Based System project is dedicated to establishing an unyielding anti-forgery system for academic documents, including mark sheets, transcripts, diplomas, and certifications. Our unwavering goal is to guarantee the authenticity of academic records, diminish the prevalence of counterfeit certificates, and streamline the document verification process, ultimately saving time and resources for all stakeholders. Through the adept utilization of blockchain, IPFS, and hash functions, we are committed to providing an exceptionally reliable method for verifying the legitimacy of certificates. This groundbreaking initiative centers around three pivotal entities: the Issuer, responsible for creating and issuing electronic certificates (e.g., universities awarding bachelor’s degrees), the Verifier, who rigorously authenticates the certificates (e.g., prospective employers conducting background checks), and the Student, who has
secure access to the received documents
REAL TIME VEHICLE COLLISONDETECTION USINGBOUNDING BOXWITH ALERT SYSTEM
Authors: Dr. S.V Hemanth  , Kammari Deepak  , Salvadi Sai Surya Teja  , VallepuYamalaiah  , Bandari Raju
Published: October 2024

This research presents an innovative application of deep learning techniques for the earlydetection and classification of plant diseases, highlighting the exceptional performance of theResNet9 model. The study begins with a meticulous implementation of ResNet9 on the diverse andextensive PlantVillage dataset, achieving an impressive 99.2% accuracy. This success is attributedto strategic parameter tuning, incorporating techniques such as learning rate scheduling, gradientclipping, and weight decay. The investigation is expanded to address unique challenges in Indianagriculture, with the curation of datasets for major crops such as cotton, rice, and groundnut. Thecommitment to practical application is manifested in the development of a userfriendly webinterface, strategically designed to empower farmers. This interface, based on Convolutional NeuralNetworks (CNNs), facilitates accurate disease identification across different crops, offering acomprehensive solution for precision agriculture. Through this tool, farmers gain valuable insightsinto disease prevention methods, enhancing their decisionmaking in sustainable crop healthmanagement. The findings underscore the efficacy and versatility of the approach, positioning it atthe forefront of leveraging technology for the advancement of global food security and agriculturalsustainability.
Social Media And Misleading Information In A Democracy A Mechanism Design Approach
Authors: Dr. S. V Hemanth  , Abhishek Kant Sinha  , Anwesha Sathua  , Drishti Kumari  , Dommati Shyam Kumar
Published: October 2024

The advent of social media platforms in modern democratic societies has fundamentally
transformed how information is disseminated and consumed. These platforms have created
unprecedented opportunities for communication and self-expression. However, they have also
become fertile grounds for the rapid spread of inaccurate and deceptive information.
Addressing this issue involves utilizing a mechanism design approach to scrutinize the impact of
social media on democratic processes and propose solutions to curb the spread of misinformation. By
analyzing the incentives and strategic behaviors of platform users, content creators, and information
consumers, this research aims to understand how social media algorithms, user interactions, and
network structures contribute to the proliferation of misleading information.
The insights gained from this analysis will significantly contribute to the ongoing discourse about the
role of social media in democratic societies. Furthermore, the findings will provide actionable
recommendations for policymakers, platform designers, and users. The ultimate goal is to cultivate a
healthier and more reliable information ecosystem, thus enhancing the quality of democratic
engagement and decision-making
MEASUREMENT OF THE INTENSITY OF SURFACE CARBONATE CORROSION PROCESS USING ROCK TABLET METHOD IN NORTHERN VELEBIT NATIONAL PARK AND NORTH DALMATIAN PLAIN (CROATIA)
Authors:   University of Zadar, Department of Geography, Zadar, Croatia, Perica Dražen , Krklec Kristina ,   University of Zagreb, Faculty of Agriculture, Department of Soil Science, Zagreb, Croatia
Published: October 2024

To measure the intensity of surface carbonate corrosion and better understand the formation of karst landscape, rock tablet method has been used since the 1950s. This simple and versatile method can be applied in all karst areas with equal reliability of measurement results. Thus, it was widely accepted among geomorphologists, and consequently, the Commission for Karst Denudation normalized its application during the 7th International Speleological Congress (held in 1977 in Sheffield, UK). The intensity of surface carbonate corrosion was investigated in three areas (20 locations in total) that differ in their climatic, pedogeographical, and biogeographical characteristics: Northern Velebit National Park, Modrič cave area, and on the North-Dalmatian Plain. Locations of study sites range from sea level (20 m a.s.l.) to the peak zone of Northern Velebit area (1,600 m a.s.l.) and are dominantly made of carbonate rocks: limestone, breccia (Jelar beds), and conglomerate (Promina beds) with a very high proportion of older carbonate rocks, and dolomite. The measurements were done using “standard” rock tablets and those of local lithologies. “Standard” rock tablets are made of Upper Cretaceous (Senonian) limestone from a quarry near Lipica (Slovenia) having 97.9–98.7% CaCO 3. Those rock tablets are 42 mm in diameter, 3–4 mm thick, and have been used worldwide, providing relative weathering rate, and allowing comparison of results with other locations or climates. In order to obtain absolute weathering rates, we used rock tablets made of local lithologies.
ENVIRONMENTAL ISSUES AND GEOGRAPHICAL UNDERSTANDING
Authors:   Geographical Institute “Jovan Cvijić” SASA, Belgrade, Serbia, Miljanović Dragana
Published: October 2024

Environmental issues are in focus of many scientific disciplines. An increasing number of academic papers emphasize the significance of geography in the study of environmental problems, which many authors believe has been overlooked. As an analytical framework for the study of the relations between nature (environment) and society (human being), new scientific concepts such as coupled human and natural systems, social-ecological systems, a sociobiophysical systems, human-natural systems, and human-environmental systems, that have attracted scientific attention, are developed in recent decades. These concepts are structured by the appreciation of the interdependence of nature and society. Study of interactions between natural and social systems, which is one of the epistemological principles of geography, is recognized as essential in explaining of two coupled systems dynamics, i.e., understanding of the complex processes between them (feedback mechanisms). Furthermore, existing environmental studies are based on interdisciplinary approach. Precisely, the integrative and interdisciplinary nature of geography distinguishes it as a scientific discipline from others disciplines. All of the above leads to the clarification of the objective of this paper, based on a literature review: to re-emphasize the importance of geography, i.e., to reaffirm geographical (holistic) thinking in the study of the environment.
Resection of a Ruptured Epidermoid Cyst with Limberg Flap: Case Report
Authors:   Surgical Resident. Clínica Hospital Mérida, ISSSTE. Facultad de Medicina de la Universidad Autónoma de Yucatán., -Reyna Victor Hugo Solis , -Rosales Alicia Valeria Espinosa ,   Surgical Resident. Clínica Hospital Mérida, ISSSTE. Facultad de Medicina de la Universidad Autónoma de Yucatán., Gamboa Dioney Josimar Ucan- ,   Surgical Resident. Clínica Hospital Mérida, ISSSTE. Facultad de Medicina de la Universidad Autónoma de Yucatán., -Lopez Raul Alfonso Vidales ,   General Surgeon. Clínica Hospital Mérida, ISSSTE. Universidad Autónoma de Yucatán.
Published: October 2024

Epidermoid cysts, also known as epidermal cysts, keratin cysts, epithelial cysts, or sebaceous cysts (although this term is no longer widely used), are benign lesions frequently seen in clinical practice. These cysts arise from epidermal cells trapped beneath the skin's surface. The most common complication is cyst rupture, which can lead to significant inflammation and even a granulomatous response. This article presents the clinical case of a male patient with a ruptured epidermoid cyst that triggered a granulomatous reaction, treated with surgical excision and reconstruction using a Limberg flap. Proper surgical management is crucial in such cases to prevent long-term complications and ensure optimal healing.
The Impact of Multilingualism on Second Language Acquisition: A Study of Cognitive and Linguistic Proficiency Among Ethnic Minority Groups
Authors:   Dai Nam University, Hanoi, Vietnam, Ngọc Nguyen Vy
Published: October 2024

This study investigates the cognitive and linguistic differences in second language acquisition (SLA) among multilingual H'mong and Tay students compared to monolingual Kinh students in Vietnam. Using a mixed-methods approach, the study examined cognitive proficiency, including working memory and cognitive flexibility, as well as linguistic proficiency in English, focusing on vocabulary size, syntactic knowledge, and phonological accuracy. Quantitative data from cognitive and linguistic tests were analyzed using MANOVA, while qualitative data from focus group discussions provided insights into the sociocultural influences on language learning. The findings reveal that H'mong and Tay students exhibited higher cognitive proficiency, particularly in working memory and cognitive flexibility, than their monolingual Kinh peers. However, despite their cognitive advantages, multilingual students faced greater challenges in English vocabulary acquisition, syntax, and phonological accuracy, likely due to structural differences between their native languages and English. The qualitative findings highlight the role of sociocultural factors, including limited access to resources and the desire to maintain cultural identity, in shaping language learning experiences among ethnic minority students. The study concludes that while multilingualism enhances cognitive abilities, ethnic minority students require targeted instructional support to overcome linguistic barriers in SLA. The findings have implications for language education policies, particularly in designing culturally sensitive curricula and improving access to quality English education in rural and ethnic minority communities.
Abdominal wall muscle ultrasound assessment and level of experience in Pilates - an exploratory study
Authors: Pereira Mário , André Alexandra , Dias Gonçalo , Castro Maria António , Mendes Rui , Martins Fernando , Gomes Ricardo , Vaz Vasco
Published: October 2024

The core refers to a group of muscles that allow optimal force transfer along the body’s kinetic chain and is critical for movement. The goal of this quasi-experimental study was to investigate the relationship between the experience level of Pilates participants and abdominal wall thickness. For this, we compared the thickness of four abdominal muscles—transversus abdominis (TrA), internal oblique (IO), external oblique (EO), and rectus abdominis (RA)—as measured before and after 8 weeks of Pilates training in three conditions, namely, relaxation, abdominal hollowing, and plank exercise. Eighteen participants were distributed into three groups with different levels of Pilates practice—experienced (EG; n=6), inexperienced (IG; n=7), and control (CG; n=5) groups. The RA showed a tendency to increase post-intervention in the EG (all conditions: p=0,002, p=0,006, and p=0,002, respectively for relaxation condition, abdominal hollowing and standing plank). Additionally, significant differences were found in relaxation (p=0.003, d=−0.744) and plank (p=0.009, d=−0.630) conditions in the IG. Significant differences were also registered in the EO muscle in the IG (all conditions: p=0.046, p=0.013, and p=0.008, respectively; d=0.464, d=−0.596, and d=−0.637, respectively). IO muscle thickness tended to increase in the CG in all conditions (p=0.044, p=0.006, and p<0.001, respectively) and the EG in relaxation and plank conditions (p=0.009 and p=0.007, respectively). Within groups, the effects of Pilates practice were more significant post-intervention, with the exceptions being under the contraction condition in the deepest muscles (IO: p=0.109, d=0.083; TrA: p=0.194, d=0.062). Our hypothesis was partially confirmed because 8 weeks of Pilates practice have improved significantly the thickness of the RA and EO muscles in the IG.
Physical fitness of schoolchildren in the Metropolitan Region of Santiago: comparative analysis between types of educational establishments
Authors: Salazar Rodriguez Gabriela , Vázquez Fabiérn , Vasquez Osorio Sofia , Torres Mejias Jorge
Published: October 2024

Introduction: State and private subsidized schools usually have limited resources that may restrict the frequency and quality of physical activities offered in educational establishments. Objective: to compare the physical condition of schoolchildren between 6-14 years of age attending state, private subsidized and private schools in the boroughs of the Metropolitan Region of Santiago. Methods: we worked with a random sample by sex and age of 1656 schoolchildren aged 6-14 years. Anthropometry was measured (weight, height, arm circumference, waist circumference and skin folds). In addition, horizontal jump without impulse, grip strength and the distance covered in the six-minute walk test were measured. Results: there was a significantly higher proportion of obesity and waist circumference above the 90th percentile observed in students from state schools, compared to their peers from private and subsidized private schools. At the same time, girls in state schools had significantly lower physical performance, particularly in tests of grip strength and horizontal jump (p < 0.01). Conclusion: State and subsidized schools tend to face resource limitations that may restrict the frequency and quality of physical activities offered. This may lead to lower results in physical fitness tests and, therefore, to a higher prevalence of risk indicators for cardiovascular and metabolic diseases in these students. Therefore, it is urgent to increase the quantity and quality of daily exercise time and to stimulate participation in sports to prevent and promote cardiovascular health.
Efectividad del tiro después de un rebote ofensivo y su impacto en el éxito del equipo en baloncesto 3x3
Authors: Gómez-Jarel Joseba , Montero-Seoane Antonio , Rodríguez-Fernández Alejandro , González-Devesa Daniel
Published: October 2024

El propósito de nuestra investigación fue analizar la efectividad del tiro en baloncesto 3x3 después de un rebote ofensivo. Se analizaron un total de 16,136 posesiones correspondientes a 350 partidos en 18 competiciones diferentes. Las variables recopiladas fueron las siguientes: (1) tiro a canasta después de un rebote ofensivo; (2) efectividad en el tiro después de un rebote ofensivo; (3) zona de tiro; (4) zona de anotación. Los análisis estadísticos incluyeron series de regresiones logísticas binarias. Los resultados de este estudio muestran que el área central del campo es utilizada regularmente tanto por los equipos ganadores como por los perdedores en términos de intentos exitosos y tiros totales realizados. La efectividad en el tiro aumenta cuando se tira después de un rebote ofensivo (OR= 1.51; p<0.001) y los equipos ganadores exhibieron un mayor número de intentos de tiro totales (OR= 1.26; p<0.001). Además, los equipos ganadores fueron más efectivos después de un rebote ofensivo en comparación con los perdedores (OR= 1.27; p= 0.015). Para los equipos de 3x3, el rebote ofensivo constituye un componente crucial para aumentar las oportunidades de anotación. Además, la ubicación del tiro ejerce un impacto notable en la efectividad de la anotación.
Disease Prediction and Drug Recommendation Using ML
Authors: Swetha S  , Sowmya S R  , Pratishta S
Published: October 2024

In today's dynamic healthcare landscape, the integration of technology has become indispensable. The project sets out to create a cutting-edge healthcare solution that will transform the very foundations of healthcare decision-making by utilizing the powerful powers of machine learning. The main objective of this project is to develop a dual-dashboard system that will serve both patients and medical staff. The main objective is to reduce the gap between patients and healthcare professionals, which has existed for a long time. It makes it possible for people to receive highly personalized health assessments, enables efficient appointment scheduling, and provides doctors with recommendations for data-driven treatments. Ultimately, this project aims to profoundly impact the accessibility and quality of healthcare services. It seeks to enhance the patient experience, augment the precision of medical decision-making, and foster seamless collaboration between individuals and their healthcare providers.
Rośliny lecznicze we florze Obniżenia Górnej Warty (Wyżyna Woźnicko-Wieluńska)
Authors:   Department of Pharmaceutical Botany and Herbal Medicine, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, Katowice, Poland, Kowalik Katarzyna
Published: October 2024

The main aim of this floristic study is to evaluate the natural resources of vascular plant species (with special attention to medicinal ones) in the Upper Warta Depression (Woźnicko-Wieluńska Upland). In administrative terms, the investigated area belongs to the Silesian province and ranges from Zawiercie to Czestochowa. The studied area is covered mainly by mixed or coniferous (pine) forests but there are also riparian woodlands on the banks of ponds, streams and smaller rivers. Moreover, the Upper Warta Depression is characterized by numerous meadows, and especially in its middle part near Myszków, by wetlands and peat bogs. The degree of human impact is moderate. The oldest literature records concerning the Upper Warta Depression come from the end of the 19th century. Although floristic and phytosociological studies had been continued there up to the beginning of the 21st century, a considerable part of the area is still insufficiently explored. Available records are very vague and imprecise.
Ultrastructural changes in the adrenal gland in terms of age and gender-related
Authors: Ünlükal Nejat , Şentürk Abdullah
Published: October 2024

Objectives: The adrenal glands are endocrine organs that synthesise hormones with crucial functions in the body. This irreplaceable structure performs multiple functions, from metabolism of carbohydrates, fats and proteins to sex development. Any disorder concerning the adrenal glands can give rise to life-threatening conditions. The aging process inevitably affects the adrenal glands. The effects of ageing are marked by a rise in cortisol secretion in the zona fasciculata and a decrease in androgen secretion in the zona reticularis. Elevated cortisol levels in the blood disturb most bodily systems in favour of catabolism, amplifying the cellular decline and destruction that accompanies ageing. The deterioration of the adrenal glands relates not just to spongiocytes and chromaffin cells, but also to the endothelium, which enables circulation. It is clear that a decline in vascular function will have a negative impact on endocrine activities. Our study aims to explore the influence of ageing on the adrenal glands in rats, analysing sex-specific ultrastructural scales. Materials and Methods: A total of 28 Sprague-Dawley rats, 14 males and 14 females, were planned to be used in the study. Of these 28 rats, 4 females and 4 males will constitute the control group. The rats in the control group will be approximately 10 weeks old, and the rats in the experimental group, which will represent the aged group, will be 19 weeks old. All animals in the study will be anaesthetised and then sacrificed by removal of the heart. The right and left common carotid arteries were removed from the sacrificed animals. Collected vessels prepared for TEM examination. For each animal, at least four TEM images were taken from four different sections from the same block. Results: Our findings demonstrate that the ageing process not only affects spongiocytes within the adrenal gland, but also contributes to the deterioration of endothelial cells. As anticipated, our results indicate the presence of senescence and apoptosis in endothelial cells. The observed vascular separations and ruptures are due to the endothelial deterioration. Spongiocytes experienced hypertrophy to compensate for the functional deficiencies following a decrease in their number due to ageing. Elevated levels of lipofuscin, lipid droplets, and lysosomes were discovered in spongiocytes. Impaired endothelium potentially contributes to certain changes in spongiocytes. Conclusions: While ageing-related changes appear similar in both genders, males tend to be more impacted.
The Prevalent Parenting Styles of Gifted Students at Ajloun Governorate
Authors: Wahsheh Nayef , Al-Rabie Kawthar , Al Fandi Awad , Tayyoun Manal , Taani Eman
Published: October 2024

Parenting styles of gifted students have a crucial role in shaping their educational and psychological experiences. Gifted children often possess skills and abilities that surpass their peers, which require special educational needs. Parenting styles vary from continuous support to fostering independence, impacting how these children develop their skills and potential. In this context, it is important to understand how parents and educators can work together to provide a learning environment that enhances the abilities of these students and helps them face the challenges they may encounter. This study examined the prevalent parenting styles of gifted students at Ajloun Governorate. The population and sample included all students learning at King Abdullah II School of Excellence at Ajloun Governorate, totaling (359) students. For data collection, the researchers employed the descriptive analytical design, by using a (32) items parenting styles scale distributing on four domains (Acceptance and attention, democracy, encouragement and reward, overprotection). The results found a high level of the prevalent parenting styles of gifted students; encouragement and reward ranked first (M = 4.25) with a very high level; then acceptance and attention with a high level (M = 4.18); democracy (M = 4.01) with a high level; and finally, overprotection (M = 2.52) with a low level. The study also found no statistically significant differences in the prevalent parenting styles of gifted students due to gender in all domains. The study recommended providing more counseling and training services for gifted students parents in order to develop their positive perception concerning the importance of the prevalent parenting styles and their effect on their gifted children.
The Role of Mechanical Mixing and Biologically Active Additives in Enhancing Cutlet Quality
Authors: Prylipko Tetiana , Koval Tetiana , Kostash Volodymyr , Tkachuk Volodymyr , Kostash Vita
Published: October 2024

The research relevance is determined by the need to understand the effect of mechanical mixing and the use of biologically active additives on the quality of cutlet mass, which will optimize food technologies and create products with improved texture and nutritional value. This need stems from the fact that the quality and characteristics of culinary products are important criteria for consumers. The research aims to investigate the relationship between mechanical mixing parameters and the use of biologically active additives with structural and mechanical quality parameters of cutlet mass, to improve production processes and develop higher quality food products. Analytical methods, classification methods, functional methods, statistical methods, and synthesis methods were used to determine the quality of the cutlet mass. In the course of the study, a comprehensive analysis of the effect of various parameters of mechanical mixing and the use of various biologically active additives on the structural and mechanical characteristics of the cutlet mass was carried out. It was found that optimal mixing conditions and types of additional components can significantly improve the textural properties of the product. It was found that the use of certain biologically active additives helps to increase the resistance of the mass to mechanical stress and preserve its juiciness. These conclusions allow us to develop more effective strategies for the production of cutlet mass with improved quality and nutritional value. The practical significance of this study is to provide scientifically based recommendations for optimizing food production processes aimed at improving the quality and nutritional value of cutlet mass by studying the effect of mechanical mixing and biologically active additives on its structural and mechanical properties.
Exploring the Multimodal Approach in Pre-Service Chemistry Teacher Education: Perspective from Students and Lecturers
Authors: Marfuatun Marfuatun , Nahadi Nahadi , Yuliani Galuh , Hernani Hernani
Published: October 2024

This study aims to investigate the implementation of a multimodal approach in the learning process and the summative tests of pre-service chemistry teacher education. Data were collected through Google Forms using semi-structured questions. Data were compared with analysis handbooks and summative test documents. The results show that most pre-service chemistry teachers have a multimodal learning style. However, the application of the multimodal approach in chemistry courses has not been extensively implemented due to several challenges. For instance, the time required for preparation can be a significant barrier, as creating and organizing multiple modes of communication can be time-consuming. The complexity of creating media is another challenge, as it requires technical skills and resources. Additionally, the characteristics of students who do not support independent learning can hinder the implementation of a multimodal approach. The most commonly used media in applying the multimodal approach are videos and PowerPoint presentations, supplemented by direct explanations from lecturers. Most of the test techniques used by lecturers were in written form, owing to the difficulties in developing multimodal tests. This study implies an urgent need for the development of multimodal test instruments to accommodate differences in students' learning styles.
Resección pancreática por cáncer de células renales metastásico: experiencia de un hospital mexicano de alto volumen
Authors: García-Castillo Edson Christian , Rodríguez-Covarrubias Francisco Tomás , Santes-Jasso Óscar , Tena-González Méndez Gerardo
Published: October 2024

Objective: The aim of our study was to report the oncological and surgical outcomes of the pancreatic resections due to solitary pancreatic metastasis of RCC in a tertiary care reference center for pancreatic masses in Mexico.
Materials y methods: All pancreatic resections at our Institution from 2002 to 2022 were retrospectively analyzed. We only included patients treated with pancreatic resections due to metastatic RCC to the pancreas. We evaluated symptoms, time from nephrectomy to pancreatic resection, type of surgery, complications and oncological outcomes.
Results: Eight pancreatic resections due to solitary metastases of RCC were performed. The median age of presentation was 69 years. The most prevalent symptom was abdominal pain (50 %). 6 pancreatoduodenectomies (Whipple procedure), 1 distal pancreatectomy and 1 total pancreatomy were done. The median time between radical nephrectomy and pancreatic resection was 122 months (8-247 months). Seven had negative surgical margins. The median follow-up time after pancreatic surgery was 42 months (1-109 months).
The only case that died had pulmonary metastases and the resection was R1. Originality and value: Original study demonstrating the survival outcomes of pancreatic resection for metastatic renal cell carcinoma in a high-volume hospital in Mexico.
Limitations: Retrospective study and the limited number of cases.
Conclusions: Pancreatic resections due to solitary metastases from CCR could offer some advantages on survival, as long as they are done in high volume centers.
IPA Analysis for Enhancing the Domestic Employment of International Students from a Brain Gain Perspective: Focused on Master’s and Doctoral Programs in Science and Engineering at Government-funded Research Institutes
Authors:   The Korean Career·Entrepreneurship & Business Association, Han Woncheol , Jeon Haeyoung , Nam Jungmin
Published: October 2024

With Korea's total fertility rate recorded at 0.72 in 2023, there is even a pessimistic prospect that it will become the 'first country to extinguish the population'. In the face of serious demographic challenges such as a population decline, regions disappear, and a lack of high-quality human resources in the industry due to a rapid decline in the fertility rate, the Korean government and each local government are pouring out various policies to alleviate these problems by utilizing the capabilities of international students. This study analyzed the importance of domestic employment promotion activities and differences in the degree of implementation of the employment support system for international students studying as master's and doctoral students at government-funded research institutes using the importance-performance analysis(IPA) methodology. As a result of the analysis, 'recommendation of supervisors' and 'industrial cooperation projects' were evaluated as the most important employment promotion activities, and in the employment support system, 'flexible visa system' and 'simplification of immigration procedures' for researchers were recognized as important. In addition, it was found that there is a difference in perception between the importance and performance of international students depending on the region of residence and country of origin, so a strategy for promoting employment tailored to the region of residence and country of origin is necessary. This study is limited to international students in science and engineering who are enrolled in U graduate university, so there is a limit to the generalization of research results. In future research, extended research is needed including international students from science and technology specialized universities and base national universities. In addition, it is proposed to expand the study on how the expectations and demands of the employment support system of international students differ according to the cultural context by comprehensively considering the country and cultural background and economic conditions that affect the employment activation of international students.
The effect of job performance ability of banking workers on job crafting : Focusing on the mediating effect of self-development desire
Authors:   The Korean Career·Entrepreneurship & Business Association, Shim Eunju , Park Namtae
Published: October 2024

This study aims to provide a direction for human resource management as part of the crisis response plan for the Korean banking industry in response to the rapidly changing industrial structure. The study aimed to verify the causal relationship between interpersonal skills and problem-solving skills among job performance abilities and job crafting among banking industry workers, and to examine the mediating effect of self-development desire between job performance abilities and job crafting. For this study, a questionnaire was administered to 260 employees of domestic commercial banks, and the collected survey data was analyzed using SPSS (Ver. 24.0). As a result of this analysis, first, the interpersonal skills of banking workers were found to have a positive (+) effect on job crafting, second, the problem-solving skills of banking workers were found to have a positive (+) effect on job crafting, third, the desire for self-development was found to have a significant complete mediating effect between interpersonal skills and job crafting, and fourth, the desire for self-development was found to have a significant partial mediating effect between problem-solving skills and job crafting. The implications of this study are as follows: First, it is necessary to enhance interpersonal skills and problem-solving skills, which are sub-components of the job performance ability of banking workers, and to promote job crafting to improve innovation and efficiency in the banking industry; second, it is necessary to strengthen the human resource capacity of the organization by providing self-development programs that improve interpersonal skills and problem-solving skills; and third, it is necessary to create an organizational culture that encourages employees to activate job crafting by enhancing the desire for voluntary self-development among banking workers, as job crafting can contribute not only to individual growth but also to innovation and performance improvement of the organization. This study has academic distinction in that it conducted research on job crafting by limiting the research subjects to banking workers, clarified the causal relationship between the research subjects’ job performance ability and job crafting, and verified the mediating effect of the desire for self-development between job performance ability and job crafting, thereby providing implications.
The Effect of the University Entrepreneurial-environment on Entrepreneurship: Mediating Effects of Discovering-entrepreneurial-opportunities
Authors:   The Korean Career·Entrepreneurship & Business Association, Ku Woongmo , Jeon Byunghun
Published: October 2024

Based on the Global Entrepreneurship Monitor(GEM) model, this study studied the effect of the Entrepreneurial-environment (Entrepreneurial-education, Entrepreneurial-support-policy) on the Entrepreneurship of students in the metropolitan area, targeting students who are cultivating Entrepreneurship by creating a Entrepreneurial-environment. Unlike previous domestic studies that focused on the effect of Entrepreneurship on Entrepreneurial-intentions and Business-performance, this study aimed to explain the relationship of antecedent variables affecting Entrepreneurship. The Entrepreneurial-environment within the university was diversified into Entrepreneurial-education and Entrepreneurial-support-policies, which were set as independent variables. Entrepreneurial-opportunity discovery was set as a mediating variable, and Entrepreneurship was set as a dependent variable. This study derived its results through hierarchical regression analysis based on 164 questionnaires collected from three universities in the metropolitan area. Looking at the analysis results, first, it was found that Entrepreneurial-education has an effect on Entrepreneurship. Second, it was found that the Entrepreneurial-support-policy has an effect on Entrepreneurship. Third, it was found that Entrepreneurial-education has an effect on Entrepreneurship through the discovery of Entrepreneurial-opportunities. It was found that the Entrepreneurial-support-policy did not affect Entrepreneurship through the discovery of Entrepreneurial-opportunities. This study is meaningful in approaching the Entrepreneurial-environment as a multidimensional concept, presenting it as a Entrepreneurial-education and Entrepreneurial-support-policy, and empirically confirming the effective factors that affect the Entrepreneurship of college students. In addition, rather than creating a Entrepreneurial-environment that is biased toward Entrepreneurial-education or biased only toward Entrepreneurial-support-policies, it suggests that various Entrepreneurial-environment such as the opportunity-capturing Entrepreneurship-model suggested by GEM should be properly created.
Corrosion of Steel Pipelines in Supercritical CO2 Environments: Effects of Injection Pressure and Temperature
Authors: Nguele Ronald , Riggs Harrison , Graff Craig , Sheets Brent
Published: October 2024

Combining carbon capture and sequestration with enhanced oil recovery (EOR) could potentially reduce the carbon footprint through permanent storage of carbon dioxide (CO2) at the end of the EOR operations. However, severe corrosion risks to surface facilities and pipelines come along with the benefits of CO2 injection. The present study, therefore, investigates the corrosion resulting from contact between supercritical carbon dioxide (sCO2)-saturated water and carbon steels typical of Alaska pipelines. Carbon steel was allowed to contact the corrosive environment for 72 h, while the corrosion rate was monitored using linear polarization resistance. It was found that injecting sCO2 into the test brine (synthetic Ugnu field salinity) increased the general corrosion by twofold compared to liquid CO2 owing to the solubility and the kinetics of the corrosion byproducts. The increase in sCO2 injection pressure at a fixed temperature (40°C) was proportional to an increase in corrosion rate (up to 8.83 mm/y). At a fixed pressure (12.7 MPa), increasing the temperature decreased the corrosion rate. As part of the effort to mitigate corrosion of CO2 in an sCO2 environment and to validate inhibitor performance outside of common operating conditions, the inhibiting potential of an imidazolium-based ionic liquid was also evaluated. The findings revealed inhibition efficiency up to 65% at low concentrations (up to 51 ppm) of the inhibitor. The addition of ionic liquid (IL) causes the corrosion to shift from a general type to pitting owing to a partial surface coverage. Results revealed further that ILs work better on carbon steel with low manganese concentration in the coupon steel.
Effect of Aggressive Anions on the Stress Corrosion Cracking of Stainless Steel in Hot-Pressurized Alkaline Water
Authors: Asare E.K. , Zeng Y. , Persaud S.Y. , Kish J.R.
Published: October 2024

U-bend stress-corrosion cracking (SCC) testing of low Cr ferritic (Type 409) and austenitic (Type 304L) stainless steel was conducted in a hot-pressured alkaline water to study the effect of aggressive anions (Cl− and HS−) on the relative susceptibility. SCC was only observed in Type 304L when immersed in the solution that contained both aggressive anions. Critical factors were identified based on a cross-section examination of the U bends after exposure using complementary electron microscopy techniques. These factors include (i) preferential oxidation of deformation bands (arising from cold working), (ii) Ni-S compound formation at the oxide/metal interface and (iii) S and Cl incorporation into the inward-growing Cr-rich oxide. These critical factors were considered within an overall slip dissolution-type mechanism to account for the SCC observed.
Impactos del ABP interdisciplinario sobre las percepciones del estudiantado acerca de la crisis hídrica
Authors: Cuba Acuña Daniel
Published: October 2024

En Chile resuena con mayor intensidad el racionamiento del agua producto de la crisis que se arrastra por más de una década. Debido a esto, es importante trabajar esta temática sociocientífica (TSC) desde diversos espacios educativos, siendo una pieza clave, la exploración de enfoques interdisciplinarios que otorguen un valor adicional para cultivar la alfabetización científica.
En este sentido, el aprendizaje basado en proyectos (ABP) se presenta como idóneo para trabajar TSC en el marco de la educación STEM. Sin embargo, a pesar de que el ABP está en el centro del debate pedagógico, sigue siendo una deuda pendiente el contar con mayor evidencia respecto al impacto que ha tenido en las escuelas con la implementación de las nuevas bases curriculares de 3° y 4° medio. El objetivo de este estudio es analizar los impactos de un caso de implementación de ABP interdisciplinario sobre las percepciones del estudiantado de cuarto año medio de un colegio particular de la Región Metropolitana, respecto de la TSC de la crisis hídrica. La investigación es descriptiva exploratoria e, incluye métodos cuantitativos y cualitativos. Los resultados obtenidos muestran un cambio en las percepciones de los estudiantes, principalmente en las decisiones y proyecciones sobre la crisis hídrica a nivel país, concluyendo que, el ABP interdisciplinario entre las asignaturas de Ciencias para la Ciudadanía y Educación Ciudadana promovió a que algunas percepciones sobre la crisis hídrica experimentaran cambios después de la implementación, aportando así, nueva evidencia respecto al impacto como estrategia didáctica en el abordaje de problemáticas sociocientíficas en el aula.
STEAM en la enseñanza interdisciplinar de las ciencias: una propuesta pedagógica para los desafíos ambientales de hoy
Authors: Paiva-Sánchez Carlos , Marín Navarrete Aurora , Alegría Correa Rocío , Brito Brito Adolfo , Romero Aliaga Pía
Published: October 2024

El siglo XXI ha sido catalogado como el siglo de la sustentabilidad, pues se busca, por medio del estudio y la aplicación de diversas soluciones, combatir la actual y evidente crisis climática. Una de las soluciones se enfoca en mejorar y desarrollar políticas educativas enfocadas en la educación ambiental para la sustentabilidad, a fin de que el estudiantado construya conocimientos y desarrolle habilidades y actitudes que le permitan comprender cómo el conocimiento científico, sus aplicaciones y las acciones humanas impactan la vida en la Tierra, incluyendo a los ecosistemas y a los distintos procesos físicos, químicos y biológicos que los mantienen. Para ello se realizó una revisión bibliográfica de los distintos documentos curriculares que el Ministerio de Educación de Chile tiene a disposición con el objetivo de realizar una propuesta didáctica basada en el modelo de enseñanza STEAM, que dé respuesta al desarrollo de la educación ambiental en el país. Esta propuesta, cumple con los requerimientos para ser considerada como una actividad didáctica con enfoque STEAM, permitiendo realizar cruces curriculares entre distintas asignaturas, de distintos niveles educativos, formando un proceso de enseñanza-aprendizaje transversal y colaborativo entre los docentes, fortaleciendo el conocimiento y el uso de las tecnologías de la información y las comunicaciones (TICs).
Evaluation of Color and Translucency Changes of PEEK Material Veneered with Single-Shade Composite Resins
Authors: KARAOKUTAN Işıl , AYVAZ İlayda
Published: October 2024

Aim: The aim of this study was to evaluate the color and translucency changes of single-shade composites used in veneering polyetheretherketone (PEEK) material after aging.
Materials and Methods: 3 single-shade composites with different chemical structures and 1 conventional composite resin were applied on the PEEK material with a thickness of 2 mm (N=40, n=10). L, a, and b color coordinates of each specimen were measured three times with a spectrophotometer on a black, gray, and white background from the center of the specimen, and the average of these measurements was recorded. The specimens were subjected to 5000 cycles of thermal aging at 5-55°C. After aging, color measurements were repeated. Color changes (ΔE00) and translucency parameters (ΔTP00) of composite resin specimens were determined before and after aging using CIEDE 2000 color formulas. The data obtained were analyzed by one-way analysis of variance and Tukey HSD test (p<0.05).
Results: As a result of the study, the color change of all composite resin materials was found to be below the clinically acceptable limit (ΔE = 1.8). The lowest color change was observed in the traditional composite group, and a statistically significant difference was found between the other groups (p<0.05). The translucency change of single-shade composite materials was found to be statistically lower than that of conventional composite resin (p<0.05).
Conclusion: This study's results show that single-shade composite resins can be used as an optical alternative to traditional composites in direct veneering of the PEEK material.