bluuebunny/crossref_metadata_2025 huggingface dataset:
Vegetation Analysis and Silvicultural Suggestions for Mitigating Fire Danger and Protecting Nature the Case of a Natura 2000 Site in Southern Greece
Authors: Tsakaldimi Marianthi , Ganatsas Petros , Oikonomakis Nikolaos , Kouloukouras Elias , Partozis Thanasis
Published: September 2023

Purpose: The development of a methodological approach for the estimation of the wildfire danger in a protected area, located near a big city, based on the dominant factors contributing to a fire-prone environment and affect fire behavior.
 
Theoretical framework: Vegetation management in protected areas characterized by sprawling of adjacent urban and suburban development patterns, is a complicated task, especially under Mediterranean climate due to the high vulnerability to wildfires. They should aim, among others, to mitigate forest-fire occurrence risk, eliminate the wildfire damages as well as to protect humans, and conserve the high biodiversity of the protected areas.
 
Method: We generated a forest fire occurrence danger zone map based on: i) historical fire data ii) types of vegetation and forest ecosystem characteristics, iii) topographical characteristics, iv) distance from the settlements, and v) distance from the roads. A probability model equation for forest fire occurrence was produced. Wildland-Urban Interface mapping was also considered.
 
Results and conclusion: Four categories of forest fire occurrence danger zones, ranging from very high to low, were classified. The zones with high and very high fire occurrence danger cover a low percentage of the study area (6.84% and 5.76%, respectively). In the very high fire danger zones, Pinus halepensis forest and evergreen sclerophyllous vegetation, prevail. A great part of the Wildland-Urban Interface WUI belongs to the zones of high and very high fire occurrence danger.
 
Research implications: Several silvicultural and policy measures for creating fire-resilient ecosystems and mitigating the possibility of a wildfire occurrence and damages, are suggested.
 
Originality/value: The determined site-specific vegetation management and policy measures are of great importance for land management in similar areas.
Application of the principle of rationality in the conditions of accounting according to Federal Accounting Standard (FSBU) 6/2020 - Fixed Assets
Authors: CHAIKOVSKAYA Lyubov' A. , SULEIMANOV Nazhmudin S.
Published: September 2023

Subject. This article discusses the possibility of applying the principle of rationality in accounting in accordance with the provisions of the Russian Federal Accounting Standards - FSBU.
Objectives. The article aims to analyze if it is possible to apply the principle of rationality in accounting, as provided for in Clause 6 of FSBU (PBU) 1/2008 - Accounting Policy of the Organization, in addition to those provisions in which the requirement to regulate through the development of materiality criteria is expressly established by FSBU 6/2020 - Accounting for Fixed Assets.
Methods. For the study, we used the methods of analysis, synthesis, and logical research.
Results. On the basis of an analysis of the possibility of applying the principle of rationality in relation to the requirement for the verification of depreciation elements, the article offers practical recommendations for the development of materiality criteria and the provisions of the Accounting Policy providing for the application of the principle of rationality in relation to the requirement for annual verification of depreciation elements.
Conclusions and Relevance. As shown by the practice of applying FSBU 6/2020 over the past year and a detailed study of the requirements imposed by this standard, it can be argued that there is a significant increase in the complexity of the formation and presentation of the necessary high-quality accounting information on fixed assets. The results of the study can be used to improve the quality and reliability of accounting information on fixed assets, as well as reduce labor intensity in meeting the requirements for annual verification of depreciation elements.
Assessing the impact of households on the economic development of the Sverdlovsk Oblast
Authors: KUKLINOVA Polina S. , DVORYADKINA Elena B.
Published: September 2023

Subject. This article considers households as subjects of economic relations.
Objectives. The article aims to assess the contribution of households to the formation of the gross regional product.
Methods. For the study, we used the methods of logical, comparative, statistical, and correlation and regression analyses.
Results. The article finds that households have a significant impact on the value of the gross regional product, and it reveals a close relationship between indicators reflecting the economic activity of households.
Conclusions. Improving the quality of life of the population is one of the main tasks of public authorities, since the functioning of households as subjects of economic relations has a direct impact on the development of the region.
Microwave-Assitted Synthesis of Anti-Microbial Chromones
Authors: Mai Nguyen Thi Thanh , Ha Nguyen Manh
Published: September 2023

Ten new chromone derivatives were synthesized from the original 2-4-6-trihydroxyacetophenone using microwave irradiation. The products′ structures were confirmed by FT-IR, 1H-NMR and 13C-NMR spectra data. The antimicrobial activities of the obtained compounds were tested by disc diffusion method. The results showed that most of the chromones have significant biological activities against Candida albicans.
APRENDIZAGEM SIGNIFICATIVA NA EDUCAÇÃO EM ENFERMAGEM: UMA REVISÃO INTEGRATIVA
Authors: Silva Valkenia Alves , Veras Rafaella Felix Serafim , Rodrigues Mayara Muniz Peixoto , Teófilo Tiago José Silveira , Oliveira Jacira dos Santos , Vasconcelos Josilene de Melo Buriti , Pereira Maria Auxiliadora , Da Silva Maria de Fátima Oliveira
Published: September 2023

Objetivo: Analisar a produção científica acerca das estratégias educativas, baseadas em evidências, utilizadas no processo de ensino aprendizagem em enfermagem à luz da abordagem da aprendizagem significativa. Método: Revisão integrativa desenvolvida de acordo com as etapas:  identificação do tema e seleção da hipótese de pesquisa; estabelecimento dos critérios de elegibilidade; identificação dos estudos nas bases científicas/categorização dos estudos; avaliação dos estudos selecionados; análise crítica e interpretação dos resultados; apresentação dos dados na estrutura da revisão integrativa. Resultados: Diferentes estratégias educativas baseadas na aprendizagem significativa foram identificadas tais como:  mapa conceitual, estudo de caso, uso de simulador, cursos on-line e jogos.  Como principais resultados das intervenções, observou-se a promoção da aprendizagem significativa e o desenvolvimento do raciocínio reflexivo e crítico em estudantes e profissionais de enfermagem, atuando como sujeitos de sua própria práxis. Conclusão: A aprendizagem significativa é uma linha pedagógica fundamental, devendo ser inserida no processo de educação em diversas áreas do saber. Dessa maneira, foi possível identificar que a mesma ancorou estratégias de ensino que se mostraram eficazes, com destaque para o uso de mapas conceituais e as tecnologias educacionais digitais.
Sticking–Erosion Model for Ice Crystal Icing Using Particle Size Distribution
Authors: Yang Xin , McGilvray Matthew , Gillespie David
Published: September 2023

Ice crystal icing has been identified as a threat to aviation safety, with hundred engine power loss events having been experienced since the 1990s. This has led to new type certification requirements for the industry to demonstrate safe operation in these environmental conditions. The sticking and erosion behaviors of ice crystals are critical factors in ice crystal icing. However, many existing sticking–erosion models are developed based on ice crystals using the mean particle diameter for experimental tests that have a broad distribution of size. This leads to biasing when a different distribution with the same mean particle diameter is considered. This paper develops a new sticking–erosion model that accounts for the particle size distribution seen in experimental data typical of glaciated icing conditions. The results of model are compared to experimental accretion data over a range of melt ratio, Mach number, test article geometry, and particle size distribution. The predicted accretion profiles agree reasonably with experiments. The mean difference of the ice tip thickness between predictions and experiments is approximately 2.8 mm, compared to the mean ice tip thickness of 12.0 mm. The plateau effect of melt ratio on accretion is adequately predicted. More severe accretion of the small- to medium-sized ice crystals is observed. The predicted net accretion efficiency of large particles ([Formula: see text]) is small and is shown to be negative due to the effect of erosion. This concurs with the experimental observation that the presence of large ice particles is critical to reducing the ice accretion rate.
L1CAM expressing, ZFTA:: NCOA1 fusion-positive supratentorial ependymoma: A case report
Authors: Gala Roshani Hansraj , Koli Kanica , Mehta Jay
Published: September 2023

Ependymomas are uncommon central nervous system tumors arising from the ependymal lining of the ventricular system. Clinically, ependymomas are a heterogeneous group of tumors ranging from benign subependymomas to very aggressive and often fatal childhood ependymomas of the posterior fossa. The previous edition (2016) of the World Health Organization (WHO) classification primarily defined ependymoma subtypes based on their clinicopathological characteristics (with the exception of v-rel avian reticuloendotheliosis viral oncogene homolog A (RELA) RELA-fusion-positive ependymoma), while the WHO 2021 classification instead classifies ependymoma on the basis of their molecular profile and anatomic location. These include supratentorial-zinc finger translocation-associated (ZFTA) fusion-positive, supratentorial-yes-associated protein 1 (YAP 1) fusion-positive, posterior fossa group A and B, spinal, spinal-master regulator of cell cycle entry and proliferative metabolism (MYCN)-amplified, myxopapillary, and subependymoma subtypes. This new approach provides an objective molecular basis for the diagnosis as well as classification of ependymomas. At the same time, it is also helpful to better predict the prognosis of the patients. Notably, first studies on tumor relapse samples indicate that this molecular classification might be more stable in the course of the disease than histology alone. Among these, ZFTA-fusion-positive supratentorial ependymomas (STEs) have the worst outcome and non-RELA ZFTA-fusion ependymomas have even worse outcome; hence, recognition of this fusion is important. L1 cell adhesion molecule (L1CAM) immunoexpression is specific for ZFTA:: RELA fusion and supports the diagnosis of ZFTA-fusion-positive STE where molecular testing is unavailable. We describe a case of L1CAM immunoexpressing and ZFTA:: NCOA fusion-positive STE.
Post-Operative Analgesia and Enhanced Recovery after Pecs 1 and Pecs 2 Blocks in Patients Undergoing Modified Radical Mastectomy/Breast-Conserving Surgery with Axillary Lymph Nodal Clearance
Authors: Thiek James , Sharma Devajyoti , Guha Akash , Kalita Lachit
Published: September 2023

Background

Patients undergoing modified radical mastectomy (MRM)/breast-conserving surgery (BCS) with axillary nodal clearance experience significant post-operative pain, resulting in immobilization and increased usage of analgesics. These factors in turn result in delayed discharge.

The pecs 1 and pecs 2 blocks have proven to be of significant benefit in relieving post-operative pain in such patients.

Objectives

A case series was performed at our institute to note the effects of pecs 1 and pecs 2 blocks on post-operative opioid use, early mobilization of the upper limbs, decreased incidence of early post-operative limb swelling and enhanced recovery after surgery.

Material and Methods

We included six patients who underwent BCS with axillary lymph node dissection/MRM wherein intraoperative pecs 1 and pecs 2 blocks were used.

Patients were given pecs 1 and 2 blocks with 10+20 mL 0.25% injection of bupivacaine under ultrasound guidance after induction.

Results

In our study, opioids were completely avoided and it was seen that post-operative pain was adequately controlled with single doses of non-steroidal anti-inflammatory drugs if patients received intra-operative pecs 1 and 2 blocks. The pain control was rather sustained and adequate for the institution of early post-operative physiotherapy and thus early discharge and enhancing recovery after surgery.

Conclusion

Post-operative analgesia provided by pecs 1 and 2 blocks resulted in adequate and sustained pain control for early institution of upper limb physiotherapy and mobilization of patients after MRM/BCS with axillary lymph node dissection, which subsequently results in decreased incidence of early post-operative oedema of limb on operated side and early recovery after surgery.
Comparative Study of Combination of Intralesional Triamcinolone Acetate with 5-Fluorouracil Versus Triamcinolone Alone in Treatment of Keloid
Authors: Kumar Sudeep , Kumar Pankaj , Asif Shadab , Pandey Sandhya
Published: September 2023

Objectives

To assess various parameters of outcomes in the management of keloid by comparing the combination of 5-Fluorouracil (5-FU) with triamcinolone acetate and triamcinolone alone.

Materials and Methods

The present study was carried out as a prospective comparative study over a period of 24 months. A total of 70 diagnosed Keloids patients were included in the study, who were randomly divided into two equal groups: 35 patients were administered triamcinolone acetate and 5-FU (0.1 mL TA + 0.9 mL 5-FU) were classified as Group A (Triamcinolone acetonide [TAC] + 5-FU) while the remaining 35 (50.0%) patients were administered a 1 mL intralesional injection of triamcinolone acetate alone and were classified as Group B (TAC alone). Patients of both groups were administered the injections selected for them at a 3 week interval for 3–6 months. Patients and independent observers assessed the scar at each visit until the last follow-up. Assessment by patients was done for pain, itching, scar colour, stiffness, thickness and irregularity of the keloid on a 10-point scale, with higher values showing worse results. Assessment of scars by an independent observer was done on a similar scale, including vascularization, pigmentation, thickness and pliability.

Results

Initially vascularity, scar colour, vascularity and thickness of patients’ scars in both the groups assessed by the patient as well as the observer were comparable, which remained comparable up to the administration of the second dose. Thereafter, both patient and observer observed that the parameters of TAC + 5-FU administered patients were significantly lower than of those administered TAC alone. Assessment of irregularity in shape and pliability of scar was done only by the patient. Initially both irregularity and pliability of the patients in both groups were comparable, which remained comparable up to the administration of the third dose. Thereafter, the parameters of TAC + 5-FU administered patients were significantly lower than those administered TAC alone.

Conclusion

The findings in this study indicate that adjuvant 5-FU to TAC was more effective as compared to TAC alone.
Análisis del desempeño de técnicas de aprendizaje automático para identificar vegetación acuática con bandas de Sentinel-2
Authors: Venturini Virginia , Marchetti Zuleica Y. , Fagioli Gianfranco , Walker Elisabet
Published: September 2023

En la Argentina se observa una frecuencia creciente de desastres naturales como desbordes de ríos, sequías extremas e incendios forestales naturales. Ante estas catástrofes, es fundamental gestionar de manera eficiente la toma de decisiones rápidas para minimizar los daños; esta es una preocupación latente tanto de los gobiernos locales y regionales como de la comunidad científica. La cuenca del río Paraná, en la Argentina, representa un recurso estratégico, ya que engloba la mayor riqueza fluvial y ecológica, además de grandes centros urbanos. Sin embargo, los eventos extremos que caracterizan la dinámica de los humedales afectan a los centros urbanos ubicados en sus cercanías. La presencia de vegetación acuática (libre o arraigada) enmascara las áreas anegadas y ocultan los primeros indicios de anegamiento, lo cual dificulta el monitoreo y la rápida detección de esas áreas. En este trabajo se utilizaron imágenes satelitales ópticas y modelos de aprendizaje automático para clasificar las diferentes coberturas del suelo en humedales del sistema fluvial del Paraná. Se hizo foco en ambientes donde coexisten el agua libre y la vegetación acuático-palustre, típicos de la región metropolitana de la ciudad de Santa Fe, considerando las limitaciones técnicas de los organismos tomadores de decisiones. Se usaron imágenes de la misión Sentinel-2 (S2) para entrenar y evaluar el rendimiento de distintos algoritmos de aprendizaje automático. Se utilizaron todas las bandas de las imágenes S2, unificando la resolución espacial en 10 m. Los resultados indicaron que las bandas de aerosoles costeros (B1) y dos bandas de infrarrojo medio (B11 y B12) son las que aportan más información para identificar las clases muestreadas. Por otra parte, el método random forest fue el de mejor desempeño para la clase vegetación acuática, de interés especial en este trabajo.
Pemodelan Indeks Harga Saham Gabungan dengan Model Regresi Semiparametrik Kernel
Authors: Era Era , Rizki Setyo Wira , Yundari Yundari
Published: September 2023

Indeks Harga Saham Gabungan (IHSG) adalah indeks rata-rata gabungan seluruh saham yang diperjualbelikan di Bursa Efek Indonesia (BEI). Informasi historis IHSG sangat dibutuhkan ketika investor memutuskan berinvestasi. Pengaruh faktor-faktor di luar pasar modal yang menyebabkan terjadinya fluktuasi dapat dianalisis dengan model regresi. Terdapat tiga model regresi yaitu parametrik, nonparametrik dan semiparametrik. Model regresi parametrik mengasumsikan bahwa pola pada variabel data diketahui sedangkan model regresi nonparametrik mengasumsikan bahwa variabel data polanya tidak diketahui. Kombinasi antara model regresi parametrik dan regresi nonparametrik untuk mendapatkan model terbaik digunakan model regresi semiparametrik. Parameter model regresi semiparametrik dapat diduga menggunakan pendekatan kernel. Kernel memiliki kemampuan yang baik dalam memodelkan data yang tidak mempunyai pola tertentu. Tujuan penelitian ini adalah menganalisis regresi semiparametrik kernel dengan fungsi Gaussian dan estimator Nadaraya-Watson dalam memodelkan IHSG. Data yang digunakan merupakan data sekunder yaitu data IHSG, jumlah uang beredar dan inflasi pada periode November 2015 hingga Desember 2019. Hasil pemodelan menunjukkan bahwa model regresi semiparametrik kernel dengan nilai bandwidth optimal 0,75 dan GCV sebesar 76467,09 diperoleh estimasi parameter sebesar 4,024098. Nilai MAPE kurang dari 10% yaitu sebesar 3,6%, sehingga dapat disimpulkan bahwa model regresi semiparametrik kernel terbaik mempunyai kemampuan peramalan yang sangat baik.
IMPLEMENTASI ANALISIS VARIANSI PADA DESAIN BUJUR SANGKAR YOUDEN UNTUK EKSPERIMEN
Authors: Munawwaroh Ikhsa , Saliaputri Leivina , Herdiyani Salma Maulida , Puspasari Tantri Tafuna , Winarni Sri
Published: September 2023

Penelitian ini menggunakan Desain Bujur Sangkar Youden (DBSY), sebuah desain bujur sangkar latin yang tidak lengkap dengan jumlah kolom yang berbeda dari jumlah baris dan perlakuan yang diteliti. DBSY memiliki sifat keseimbangan yang memastikan setiap baris yang berhubungan dengan kelompok dan perlakuan terjadi tepat satu kali dalam tiap kolom atau baris. Untuk memastikan validitas analisis variansi, dilakukan uji normalitas pada asumsi yang mendasari pengujian. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian 5 dosis gastrin pada tikus terhadap rata-rata acid secretion. Sampel yang diambil terdiri dari 4 tikus dengan 3 kali percobaan. Berdasarkan analisis variansi, hipotesis yang diajukan diterima, menunjukkan bahwa dosis HS, LT, HT, dan LS tidak memberikan pengaruh signifikan terhadap rata-rata acid secretion pada tikus yang diamati.
Differentiation of Human Pluripotent Cell-derived Neural Rosettes to Dopaminergic Neurons by Small Molecules
Authors: Kochegarov Andrei , Huang Yaodong , Biswas Goutam , Sato Noboru , Pirrung Michael
Published: September 2023

A major challenge for regenerative medicine is differentiation of pluripotent cells to one of the hundreds of specialized cell types in the human body, without the introduction of animal traits or pathogens that would make them useless for transplantation. One approach to this problem is differentiation promoted by small molecules. In this work, a chemical library was prepared based on compounds that are neurotrophic for rat dopaminergic neurons and mimic some effects of glial-cell derived neurotrophic factor (GDNF). Members of a library of a N-(heteroarylsulfamoyl)-phenyl cinnamides were studied in a low-throughput phenotypic screen for their ability to promote differentiation of human pluripotent stem cell-derived neural rosettes to dopaminergic neurons, with morphological scoring. A hit series was identified and the cells resulting from compound treatments were shown by phenotypic assays to exhibit traits of the A9 dopaminergic neuron subtype. The method is effective with both hES cell- and hiPS cell-derived rosettes.
A Simple Electron-Density Based Force Field Model for High-Energy Interactions between Atoms and Molecules
Authors: Rodrigues Romero José Antonio , Limão-Vieira Paulo , Hermansson Kersti , Probst Michael
Published: September 2023

In high-energy molecular dynamics or Monte-Carlo simulations, standard force fields that are optimised for simulations at ambient temperature are inadequate. This is largely because their repulsive part has been regarded as not very significant even well below zero interaction energy. It is therefore not obvious which force fields to resort to for simulating hot gases or plasmas. A Force Field model which uses the electronic densities of non-interacting atoms or molecules within the pair approximation is introduced. We start by deriving a naïve model that neglects any exchange and correlation effects between the electronic clouds and then correct this model by adding a term calibrated from ab initio calculations using CCSD(T)/cc-pVTZ level of theory. The resulting expression can be regarded as a simple exchange-correlation functional. We compare the results for the repulsive part of the potential energy hyper-surfaces with force fields commonly used on some dimers of small molecules.
Scaling the Process Chemistry of a COVID-19 Antiviral Pharmaceutical Down for a Multi-Step Synthesis Experiment in the Undergraduate Teaching Laboratory
Authors: Wommack Andrew J. , Holloway Aaliyah B. , Stallings Kaitlyn A. , Lundin Pamela M.
Published: September 2023

Molnupiravir is an orally bioavailable direct acting antiviral agent that received emergency use authorization in late 2021 from the FDA for the treatment of patients with mild, moderate, or severe COVID-19. This prodrug is metabolized into a ribonucleoside that that is incorporated into the viral RNA during replication. Its tautomerization between cytidine- and uridine-like forms ultimately causes multiple irreversible errors in the genetic code of the virus, which prevents successful viral replication. There are multiple process chemistry routes for molnupiravir synthesis published in the literature that attempt to maximize synthetic yield while minimizing cost and waste. In this way, the goals of a successful process scale route are similar to those of an implementable educational laboratory experiment for the teaching laboratory. We have developed a multi-week laboratory module for undergraduate students in which students conduct a multi-step synthesis of molnupiravir. Specifically, our Organic Chemistry II Laboratory course section comprised chemistry and biochemistry majors performed the final two steps of molnupiravir synthesis using procedures derived directly from the published process chemistry literature. We utilized this opportunity to introduce students to reading and interpreting these primary experimental sources. Students obtained authentic characterization data via high pressure liquid chromatography (HPLC) and nuclear magnetic resonance (NMR) spectroscopy to assess the conversion and purity of their products at each synthetic step. The relevance of this laboratory experience to the pandemic, which has had a direct effect on their daily lives, motivates the students to a high level of engagement with this experimental module. We report our in-lab activities and student generated data as well as suggestions for how this laboratory experiment could be tailored to meet similar learning objectives in other courses, such as medicinal chemistry or capstone laboratory courses, and as a function of available instrumentation.
Data-Driven Insights into the Fluorescence of Asphaltene Aggregates Using Extended Frenkel Exciton Model
Authors: Ren Fangning , Liu Fang
Published: September 2023

The origin of the fluorescence redshift during asphaltene aggregation remains debated due to the great diversity of asphaltene molecules, while the extended Frenkel exciton model provided a theoretical framework for studying multi-chromophore systems such as asphaltene aggregates. We investigated the fluorescence energy of hundreds of asphaltene dimers based on 132 experimentally determined asphaltene monomer structures. Our result shows that the dimer’s fluorescence energy is always lower than both of its monomers regardless of its intermolecular conformation, with its redshift dominated by superexchange. The dimer oscillator strength predominantly depends on the monomer with the lower fluorescence energy, and the involvement of charge-transfer states and the cancellation between monomer transition dipole moments suppressed the fluorescence especially when two monomers have similar fluorescence energy. The above findings hold for all asphaltene dimers despite their diversity, which offers a theoretical interpretation for comprehending the relationship between asphaltene aggregation and its fluorescence variation. Furthermore, this work provides theoretical insights into other research areas related to organic planar conjugated systems with multiple chromophores.
A practical framework for oil and gas operators to estimate methane emission duration using operational data
Authors: Higgins Shaun , Hecobian Arsineh , Baasandorj Munkhbayar , Pacsi Adam
Published: September 2023

Methane management is a key greenhouse gas reduction focus within the oil and gas industry. While there are a variety of techniques for methane detection and measurement, aircraft-mounted sensors have become popular for both academic studies and operators in onshore regions in North America due to their ability to screen many sites in a relatively short amount of time. Many traditional leak detection and repair techniques, like optical gas imaging, and emerging approaches like aircraft-based or satellite-based screenings are periodic, which means that they can provide information about the presence of emissions and approximate rates during the observation period. Scaling periodic observations to annual emission estimates needed for regulatory and corporate reporting requires information on emission duration, which is not generally provided by the same screening techniques. In the literature to-date, there have been several statistical approaches proposed for annualization of basin-level methane observations, but these techniques may struggle to downscale to individual operators, across which methane emission intensities are expected to vary. This paper proposes a novel, conceptual framework for using other sources of data, such as records from operator inspections and parametric monitoring, to help define the duration of detected methane emissions. Such information may prove to be a useful input to measurement-informed methane emission protocols that are under development by multi-stakeholder groups, like GTI Energy Veritas, and Federal agencies in the United States.
Medición de los resultados de aprendizaje a partir de la práctica empresarial en programas de ingeniería bajo modalidad dual
Authors: Medina Contento Alejandro
Published: September 2023

La medición de resultados de aprendizaje - RDA se constituye en un reto para todos los programas de educación superior del país, teniendo en cuenta que las universidades deben ver la evaluación más allá de un resultado cuantitativo individual del estudiante, para buscar mecanismos que permitan monitorear que los egresados de un programa académico adquieran el aprendizaje esperado. En este sentido, los programas bajo modalidad dual cuentan con la empresa como laboratorio natural para el desarrollo de las competencias del futuro profesional, convirtiéndose en el escenario ideal para la medición del logro o no de los RDA en los estudiantes, de allí la oportunidad de establecer un proceso sistemático en el cual se logre realizar seguimiento y mejora de los RDA. En los programas de Ingeniería bajo modalidad dual de la von Humboldt se actualiza de manera permanente una guía ocupacional, donde se identifican las funciones que puede desarrollar un estudiante en cada una de sus prácticas empresariales; tomando como base esta guía ocupacional, desde el inicio de la práctica empresarial se establecen las actividades que desarrollará el estudiante y la forma como éstas se alinean a cada uno de los RDA del programa; una vez iniciada la práctica y durante su desarrollo, el docente hace un acompañamiento individual al estudiante, al tutor empresarial (persona que acompaña de manera permanente y directa el proceso) y a la empresa, que tiene como objetivo realizar un seguimiento al nivel de desarrollo de cada uno de los RDA planteados para el proceso de práctica empresarial. Al cierre de la práctica empresarial se realiza un proceso de evaluación junto con el tutor empresarial, espacio que permite identificar el logro de los RDA, recolectando las evidencias y estableciendo posibilidades de mejora en el estudiante y el currículo, convirtiéndose ésta en la herramienta para establecer los planes de mejora que requiere el programa. En este trabajo se desarrolla una experiencia significativa que permite evidenciar cómo las prácticas empresariales tienen un papel protagónico en la medición y mejora de los RDA para un programa de Ingeniería bajo modalidad dual, puesto que es en escenarios reales donde se logra comprobar y tener la certeza que el futuro profesional haya adquirido los conocimientos esperados.
Resultados de Aprendizaje (RA), una experiencia en programas de ingeniería con una mirada sistémica
Authors: Rúa Ascar Juan Manuel , Manotas Bolaño Inmaculada
Published: September 2023

Los procesos educativos en los programas de ingeniería exigen cada vez más métodos y estrategias de enseñanza y evaluación alineados y en constante actualización con respecto a las necesidades del entorno productivo, social y los avances tecnológicos. Es así como las instituciones educativas buscan ofrecer programas de formación que respondan a las exigencias sociales, además, en aras de evidenciar y certificar sus procesos educativos, se someten de manera voluntaria a entidades gubernamentales de acreditación nacional como el Consejo Nacional de Acreditación CNA y las agencias internacionales como el Sistema Regional de Acreditación para la Educación Superior en el Mercosur y Estados Asociados, ARCU-SUR, Acreditation Board of Engineerring and Technology ABET, European Acreditation of Engineerring Programmes EUR-ACE, sistema de aseguramiento de la calidad a nivel europeo de la educación en ingeniería. Cuyo objetivo es fomentar la calidad universitaria, el mejoramiento de la formación y empleabilidad de los egresados, promoviendo el reconocimiento de títulos y la movilidad para aumentar la visibilidad y el atractivo de las instituciones universitarias. De esta manera las instituciones integran sus procesos académicos de diseño curricular, la enseñanza, la evaluación a los sistemas internacionales en busca de garantizar oportunidades laborales y de movilidad a sus estudiantes y egresados no solo a nivel nacional, sino también internacional. Debido a lo anterior, el presente trabajo tiene como propósito describir la experiencia en la aplicación de una metodología sistémica para el seguimiento y evaluación de los resultados de aprendizaje en un programa de ingeniería.
En el camino de la adaptación al modelo de competencias: caso de asignatura de las carreras de ingeniería eléctrica y en electrónica en una facultad del NEA
Authors: Silvana Pucheta Flavia , Matoso Elizabet Alejandra , Godoy María Viviana , Castro Chans Beatriz
Published: September 2023

Periódicamente las carreras de Ingeniería, en Argentina, atraviesan un proceso de evaluación y acreditación de la calidad, con miras a garantizar la excelencia del programa educativo y, así, cumplir con los estándares establecidos por el Ministerio de Educación de la Nación de la República Argentina. El proceso conlleva revisar y adaptar, si fuese necesario, los planes de estudio. Los últimos estándares establecidos están normados por Resol-2021-1565 y 1550 APN-ME para las carreras de Ingeniería Eléctrica e Ingeniería en Electrónica respectivamente. La novedad es que los mismos incorporan el Modelo de Competencias centrado en el estudiante. Este enfoque de formación se desarrolla en forma gradual, progresiva y planificada a lo largo de toda la carrera en tanto supone la adecuación no solo en el plano normativo, sino también en el plano didáctico-pedagógico. Los pilares-clave de la formación por competencias para los estudiantes de ingeniería comprenden los resultados de aprendizaje, la mediación pedagógica y el sistema de evaluación. En este trabajo se profundizará sobre el proceso de adaptación y la mediación pedagógica en la asignatura Métodos Numéricos de las carreras Ingeniería Eléctrica y en Electrónica de una Facultad de Ciencias Exactas, en la República Argentina. La mediación pedagógica facilita la construcción de los saberes a partir de una situación de integración que posee un carácter significativo, motivando al estudiante, invitándolo a poner en juego los conocimientos para dar sentido a lo que aprende. La asignatura Métodos Numéricos integra el bloque de las Ciencias Básicas del plan de estudios de las carreras de Ingeniería y familiariza a los estudiantes con conceptos básicos y técnicas numéricas de aproximación, mediante el uso de las computadoras, para formular y resolver problemas numéricos que se presenten, tanto en ámbitos académicos como profesionales, contribuyendo a perfeccionar sus habilidades en programación y en la solución de problemas. Se desarrollarán y analizarán los aspectos fundamentales de una situación de integración para ser aplicada en la concreción de un resultado de aprendizaje determinado por la asignatura.
Diseño de resultados de aprendizaje a partir de bases de datos de ocupaciones, Syllabus ABET y Learning outcomes de ABET. Aplicación a un pregrado en ingeniería mecánica por ciclos propedéuticos
Authors: Velasco Peña Marco Antonio
Published: September 2023

En Colombia, los requisitos para el registro calificado (sistema de gestión de calidad para educación superior o terciaria) establecidos en el Decreto 1330 de 2019 han hecho de la determinación de resultados de aprendizaje una actividad importante en el diseño curricular. Sin embargo, uno de los desafíos de establecer resultados de aprendizaje para programas de ingeniería es alinearlos no solo con el marco legal, sino también con las expectativas y requisitos de diferentes partes interesadas, como empleadores, organismos de acreditación y la comunidad educativa. Una forma de lograr este alineamiento es hacer los resultados del aprendizaje a partir de diversas fuentes de información que describen las competencias, habilidades y conocimientos que necesitan los ingenieros no solo en el contexto colombiano, sino también a nivel internacional debido a la movilidad internacional de los profesionales de la ingeniería. En este texto presentaremos cinco fuentes que pueden ser utilizadas para la elaboración de resultados de aprendizaje: la clasificación europea de habilidades, competencias, cualificaciones y ocupaciones ESCO, la red de información ocupacional O*NET de Estados Unidos, la clasificación única de ocupaciones para Colombia (CUOC), los resultados de los estudiantes de ABET y el plan de estudios de CDIO. En conjunto, estas fuentes brindan información importante sobre los roles, las herramientas, las habilidades, el conocimiento, las actividades laborales, los estilos de trabajo, las ocupaciones relacionadas e incluso las tendencias del mercado laboral para cada ocupación. Esta información se utilizó para diseñar los resultados de aprendizaje de una carrera de ingeniería mecánica articulada por ciclos propedéuticos. Además de lo anterior, se utilizaron varios elementos para establecer una taxonomía de resultados de aprendizaje: El primero es utilizar el número 4 del Programa CDIO para diferenciar la formación por ciclos propedéuticos de tecnología e ingeniería. La segunda es utilizar la Taxonomía de Bloom modificada para indicar el orden de jerarquía de los verbos entre los resultados del aprendizaje y las competencias. Con base en esta información, se puede proponer una estructura similar a un estándar de competencias específicos, como la propuesta para el futuro Marco Nacional de Cualificaciones de Colombia. Esto permite no solo plantear resultados de aprendizaje sino también los contenidos que se aplican a los mismos, lo que redunda en un plan de estudios más pertinente e integrado. Las fuentes de información y la metodología presentada permiten el diseño de resultados de aprendizaje que ayudarán a que los programas de capacitación en ingeniería sean relevantes, rigurosos y respondan a las necesidades y expectativas de las diversas partes interesadas.
Evaluación integral de la pertinencia social y académica de los programas de pregrado en la Universidad Surcolombiana: un enfoque integral
Authors: Ramírez Gutiérrez Julián Adolfo , Quintero Bonilla Alexander , Monje Álvarez Carlos Arturo , López Daza Germán Alfonso , Polanía Perdomo Jaime , Barrero Galindo Martha Isabel , Núñez Gómez Nicolás Arturo
Published: September 2023

El análisis de la pertinencia social y académica de los programas de pregrado de la Universidad Surcolombiana adopta una concepción integral, considerando aspectos económicos, sociales, culturales y humanos. La pertinencia se define como el vínculo entre la universidad y la sociedad, abordando problemáticas, necesidades y retos en materia de desarrollo humano integral, incluyente, equitativo, sostenible y en armonía con el ambiente. Se introduce el concepto de "pertinencia integral" como alternativa para equilibrar calidad y pertinencia en la educación superior. La pertinencia integral considera la oferta comprometida de la universidad, su contribución al desarrollo cultural, científico y social del país o región, y la identificación de necesidades de talento humano. La viabilidad técnica y científica, logística y la calidad de los procesos de enseñanza son elementos clave en la evaluación de la pertinencia. El estudio emplea una metodología que incluye la comparación de la información sociodemográfica de inscripciones y matriculados, la percepción de los graduados sobre competencias generales, utilidad y actualización de la formación, y un análisis cualitativo de entrevistas a grupos de interés que representan a los principales actores del ecosistema universitario. El objetivo del estudio es maximizar la pertinencia de la oferta actual y futura de la universidad. A partir de los resultados obtenidos, se proponen acciones para mejorar la pertinencia en términos de formación de graduados y respuesta a las necesidades sociales y ambientales. En conclusión, el análisis de la pertinencia social y académica se enfoca en aspectos integrales que incluyen tanto la formación de los graduados como la respuesta a las necesidades de la sociedad y el entorno. Basado en los resultados obtenidos, se proponen acciones para optimizar la pertinencia de la oferta actual y futura de la universidad.
Aproximación conceptual al diseño de un modelo de competencia por el uso del espectro radioeléctrico y su impacto en los mercados de telecomunicaciones
Authors: Fletscher Luis , Gaviria Natalia , Botero Juan Felipe , Galvis Quintero Alexander , Quintero Alexis David , Camelo Botero Miguel , Goez Germán David
Published: September 2023

El sector de las telecomunicaciones se desenvuelve en un entorno caracterizado por condiciones de fuerte competencia, incursión de nuevos operadores e incorporación de tecnologías emergentes que, sumado a los continuos cambios en los aspectos económicos y sociales, enfrenta un panorama de incertidumbre a la hora de plantear modelos de negocio y posiciones regulatorias. De acuerdo con lo anterior, este trabajo presenta los avances desde el punto de vista del diseño metodológico de un modelo que permita mejorar la comprensión sobre el impacto que tienen en el mercado las diferentes posturas de competencia por un recurso escaso como es el espectro radioeléctrico. Para su desarrollo se hará uso de las potencialidades de la inteligencia artificial y el histórico de datos disponibles sobre el mercado del servicio de telefonía móvil celular en Colombia, así como de aspectos regulatorios como el esquema de subastas utilizado para asignar las bandas de frecuencia. En su construcción, el modelo incorporará las potencialidades del sensado inteligente del espectro radioeléctrico basado en el concepto de Software Defined Radio, para que, usando algoritmos livianos de inteligencia artificial, se logre obtener un conjunto de datos reales que reflejen la ocupación del espectro y a partir de ellos se pueda modelar el comportamiento que tendría el mercado bajo diferentes esquemas de competencia. Así las cosas, este modelo permitirá comprender de nuevas formas, los estados y las dinámicas del mercado y ayudará a crear simulaciones de escenarios que aporten criterios y restricciones para las políticas de toma de decisiones por parte de los organismos reguladores. Finalmente, se debe mencionar que los avances presentados en este trabajo están enmarcados en el desarrollo del proyecto “Aplicación de técnicas de inteligencia artificial en el análisis de modelos de competencia por el uso del espectro radioeléctrico y su impacto en los mercados de telecomunicaciones” financiado por Minciencias y la CRC a través de la convocatoria 88910 y ejecutado por el Grupo de Investigación en Telecomunicaciones Aplicadas de la Universidad de Antioquia.
Impact of External and Internal Stimuli on Online Impulsive Buying Behavior: Mediating Role of Hedonic and Utilitarian Shopping Value
Authors: Gao Yanhua , Ahmad Albattat , Azman Norhidayah
Published: September 2023

Purpose: This study delves into the examination of the multifaceted determinants that impact impulsive purchasing inclinations within the realm of online retail, while simultaneously considering the idiosyncratic disparities in consumer shopping patterns.
 
Theoretical framework: The concept of perceived usefulness (PU) pertains to the degree to which a customer holds the belief that engaging in online purchasing will enhance their ability to carry out transactions effectively. The streamlined layout of a website facilitates user navigation and enhances their ability to access a wide range of information.
 
Method: The research utilises a quantitative survey to collect valuable perspectives from a heterogeneous cohort of internet consumers. The empirical evidence indicates that the presence of external stimuli, namely perceive ease of use and perceive usefulness exerts a substantial influence on impulsive purchasing tendencies.
 
Findings: The present study serves to enhance comprehension regarding the underlying mechanisms that drive impulsive purchasing behaviours in the contemporary digital era.
 
Research, Practical & Social implications: It offers valuable insights for both marketers and consumers who aspire to adeptly navigate the intricate online shopping landscape.
 
Originality: The research problem addressed in this study is the phenomenon of Impact of External and Internal Stimuli on Online Impulsive Buying Behavior: Mediating role of Hedonic and Utilitarian shopping value. this study proposes ideas for guiding government control in public events.
Comparison of the Clinical Efficacy of Arthroscopic Surgery and Extracorporeal Shock Wave Therapy in the Treatment of Knee Osteoarthritis
Authors: Tong Chao
Published: September 2023

This paper aims to explore the clinical efficacy of arthroscopic surgery and extracorporeal shock wave therapy in patients with knee osteoarthritis. The research period was from February 2022 to January 2023. A total of 79 patients with knee osteoarthritis were included and divided into the study group (n = 40) and the control group (n = 39) by lottery method using computer software. The patients in the control group were treated with arthroscopic surgery, and the patients in the study group were treated with extracorporeal shock wave therapy. The Lysholm score, visual analogue scale (VAS) score, Western Ontario and McMaster University Osteoarthritis (WOMAC) score, superoxide dismutase (SOD) level, and malondialdehyde (MDA) level were compared between the two groups. After treatment, the Lysholm score of the study group was higher than that of the control group, and the VAS score and WOMAC score were lower than those of the control group (P < 0.05). While the MDA level of the study group was lower than that of the control group, and the SOD level was higher than that of the control group (P < 0.05). Extracorporeal shock wave therapy for patients with knee osteoarthritis can restore joint function, relieve pain, and effectively regulate the level of oxygen free radicals.
Analysis of the Clinical Efficacy of Anterior Cervical Decompression and Posterior Cervical Decompression with Internal Fixation in the Treatment of Cervical Spinal Cord Injury
Authors: Zhao Yilei
Published: September 2023

This paper aims to explore the appropriate treatment plan for cervical spinal cord injury. Retrospective analysis of the treatment of 30 patients with cervical spinal cord injury in our hospital was carried out, with 15 patients treated with anterior cervical decompression and internal fixation as the study group, and 15 patients treated with posterior cervical decompression and internal fixation as the control group. There was no significant difference in postoperative and follow-up Japanese Orthopaedic Association (JOA) scores, and the incidence of postoperative complications between the two groups. The blood loss and the improvement of cervical lordosis in the study group were better than those in the control group. For patients with cervical spinal cord injury, both anterior and posterior decompression and internal fixation can achieve good clinical results, but anterior decompression and internal fixation can better maintain cervical lordosis and reduce blood loss.