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Item Pedagogical-Ecological Strategy for Enhancing Executive Performance with Transfer to Intellectual and Personality Development in Vulnerable Children(Universidade Estadual de Ponta Grossa, Editora, 2025-01-24)The intervention of executive processes such as planning, working memory, and inhibition in children from vulnerable contexts, with pedagogical and ecological strategies, could improve intellectual conditions and personality. A quantitative study was carried out with pre-test measurement of 102 students and post-test with 64, between 8 and 10 years old, the Banfe-3, K-bit and CPQ instruments were applied. The results identified significant improvements in executive performance, intellectual ability and personality regulation in children from a vulnerable institution, going from executive functioning with mild alteration to low normality, IQ with a low to medium average and personality with a tendency towards anxiety regulation, reduction of extroversion and normality in psychoticism. It can be concluded that it is possible to improve executive performance, intellectual ability, and emotional and behavioral regulation in children from vulnerable contexts, despite continuing with their adverse conditions.Item Proposal to promote healthy eating among court tennis players in the era of infoxication(Sociedad espanola de dietetica, 2025-03-06) Berdugo Alomias, Brigitt Katty; Rincón Quintero, Erleny; Bedoya Sandoval, Claudia LilianaIntroduction: tennis players are inundated with contradictory advice that makes it difficult to make informed decisions about nutrition to optimize their performance, therefore, the objective of this study was to propose strategic communication to promote healthy eating among tennis players. Method: had two approaches: qualitative and quantitative. Interviews with 18 adult employees explored the perception of communication within the academy and the athlete's diet, while a survey of 32 adolescent athletes aged 15±7 years, of which 53% were men and 15% women. Communication channels and preferred sources of nutritional information were investigated. Results: It is highlighted that the academy does not provide enough information on food, evidencing a need of tennis players. 59% use social media or other means to obtain nutritional information, while 41% consult health professionals. Conclusion: it is crucial to adopt strategic communication that adapts messages to the preferences of athletes to promote healthy eating. This will not only benefit their health and performance, but will also strengthen the comprehensive management of the academy and its relationship with the cultural, social, and political environment.Item Rhabdomyosarcoma in adults with severe thrombocytopenia: Challenges in clinical management and therapeutic complications(W.B. Saunders Ltd, 2025-01) Estela Zape, Jose Luis; Sanclemente Cardoza, Valeria; Arzayus Patiño, Leonardo; Noreña Buitrón, Lizeth Dayana; Espinosa, María AlejandraAlveolar rhabdomyosarcoma (ARMS) in adults is a rare condition with a poor prognosis compared to other subtypes. The management of this pathology is complex due to the lack of standardized guidelines and the limited response to multimodal treatments, including chemotherapy, radiotherapy, and surgery. We report the case of a 40-year-old male with stage IV ARMS and pulmonary metastasis, who underwent resection of right supraclavicular sarcoma and cervical lymph node dissection. He was later referred for palliative chemotherapy following an acute clinical presentation lasting two days, characterized by right facial edema, inflammation, ulceration, and severe pain. Initial treatment included ampicillin/sulbactam, trimethoprim/sulfamethoxazole, and dexamethasone. Chemotherapy with doxorubicin and ifosfamide was delayed due to thrombocytopenia, elevated D-dimer and fibrinogen levels, and an echocardiographic finding that required differentiation between thrombus and metastatic lesion. Anticoagulation with fondaparinux and transfusions were initiated, and the patient received 10 sessions of radiotherapy. During hospitalization, the patient developed orthopnea, pleural effusion, superior vena cava syndrome, and hemodynamic deterioration, necessitating vasopressor support and mechanical ventilation. Despite these interventions, the patient progressed to refractory shock, severe hypoxemia, and died from cardiac arrest. This case highlights the challenges in managing ARMS in adults with severe thrombocytopenia.Item An Intelligent Auditory and Visual Stimulation System for Indoor Spaces: Human Biosignals in Response to Stimuli(Korea Information Processing Society, 2025) Alvarez Garcia, Gonzalo Alberto; Zúñiga Cañón, Claudia Liliana; Garcia Sanchez, Antonio Javier; Garcia Haro, Joan; Asorey Cacheda, RafaelIn the age of digitalization, merging artificial intelligence (AI) and Internet of Things (IoT) has ushered in groundbreaking systems capable of impacting human behavior. This paper focuses on a system that integrates AIoT technology and explores its impact on human emotions and behavior to enhance human experiences in indoor spaces. The study developed a system that orchestrates a series of auditory and visual cues and monitors brain and cardiac responses to identify the effectiveness of audio–visual stimuli. AI algorithms enable us to comprehend and recommend actions concerning the stimuli within the civil infrastructure, thereby influencing individual and group behavior. The proposed system produces auditory stimuli, such as music or ambient sounds, along with visual stimuli, such as lighting and information systems. The system collected electroencephalogram (EEG) and electrocardiogram (ECG) signals to validate the capacity of these stimuli. This technological integration empowered the system to adjust to the needs of individuals and groups, thus enhancing the indoor experience. The study focused on identifying EEG responses in the late positive potential (LPP) and their correlation with ECG responses, particularly within LPP as an EEG component, as it relates to decision-making and emotional perception. By determining the LPP, the system can tailor auditory and visual stimulation to enhance user experience. This system has applications for enhancing learning, public space comfort, and mental well-being. Through adjusting auditory and visual stimulation based on biometric signals, the system can foster a more comfortable environment for concentration, productivity, or relaxation. Despite its potential, the system presents challenges such as individual variability and the need for clinical validation. Furthermore, ethical and privacy considerations must be addressed to prevent the use of invasive technologies. In conclusion, the proposed system is a significant advancement in the intersection of AIoT technology and its influence on biological processes. While challenges remain, the system’s capacity to enrich the human experience in indoor settings is promising.Item Motivational factors and learning approaches in the academic performance of university students(Universidad del Zulia, 2025-04-07) Quintero, Daniela Rodríguez; Villa, Mario Díaz; García, Adriana Monsalve; Botero, Víctor Hernán RodríguezEsta investigación analiza la influenciMotivational and learning approaches to the academic performance of university students, determining to what extent they intervene in the low academic performance of students at the University. A study with a mixed approach was carried out, with multivariate analysis to describe the relationships between the variables. The sample consisted of 37 students from the Faculty of Health in a Higher Education Institution in Cali-Colombia, during an academic period. Data collection included a documentary record, two questionnaires and semi-structured interviews. As a result, students obtained an academic average of 3.2 and an academic mortality of 21.6%. A significant correlation was found between motivational factors, especially test anxiety, and academic performance. Although deep and strategic approaches to learning correlated with each other, they did not show a direct relationship with academic performance. Intrinsic motivation and resource management play a key role in academic success. It is concluded that in cases of low academic performance it is necessary to validate the determinations and intrinsic motivations of the student, since adequate learning approaches or strategies are not a guarantee for good performance.Item Technological tools for the control and follow-up of patients with respiratory diseases and oxygen support(2021) Rojas, Anisbed Naranjo; Arango, Ana Cristiana; Mosquera, Freiser Eceomo CruzThe use of technological tools in health allows reaching geographical points where traditional medicine draws a gap between health institutions and patients. These technologies can reduce medical absence rates, increase adherence to treatment, and help ensure the appropriate frequency of medical visits. In the present work it was proposed to carry out a review of the literature on the control and follow-up in patients with oxygen and respiratory diseases through technological tools. A search was carried out in the databases Pubmed, Cochrane, Medline, Lilacs, Biomed, National Library, Science, with descriptors such as Medical Subject Headings (MeSH) and Descriptors in Health Sciences (DeCS). The analysis of the literature was carried out using the elements Strobe, Amstar. From the studies included in the final analysis, it can be evidenced that mobile health technology has become a very important tool in the monitoring and control of patients with respiratory diseases, which provides data in real time that They can be used to minimize complications and expand the opportunity for quality care in patients with respiratory problems, however, it is necessary to carry out clinical trials to determine the clinical benefits, when using technological tools in this area.Item Why is it important to implement meta-research in universities and institutes with medical research activities?(Frontiers Media SA, 2025-03-18) Lozada Martinez, Ivan David; Neira Rodado, Dionicio; Martinez Guevara, Darly; Cruz Soto, Hary Salome; Sanchez Echeverry, Maria Paula; Liscano, YamilIn recent years, there has been a growing concern over questionable practices and a lack of rigor in scientific activities, particularly in health and medical sciences. Universities and research institutes are key players in the development of science, technology, and innovation. Academic institutions, whose primary mission is to generate and disseminate knowledge, bear the responsibility in many parts of the world to act as consultants and guardians of scientific integrity in health research. Then, universities and research institutes must act as guardians of the research and technological development process, utilizing methodological and operational evaluation tools to validate the rigor and quality of medical research. Meta-research is defined as the research of research itself. Some of the most important specific objectives of meta-research include the assessment of research relevance, the evaluation of evidence validity, and the exploration of scientific integrity. A significant portion of evidence in the medical and health sciences literature has been found to be redundant, misleading, or inconsistent. Although this issue is of great importance in global health, discussions about practical and tangible solutions remain fragmented and limited. The aim of this manuscript is to highlight the significance of employing meta-research within universities and research institutes as a tool to monitor scientific rigor and promote responsible practices in medical research.Item Teacher training in Latin America(2021) Cano Quintero, María Constanza; Ordoñez, Edward JavierCurrently, teacher training is of great interest to academics, researchers and world organizations that ensure the education of peoples; since it is recognized in the qualification of this union, one of the aspects that determine the educational quality and the consequent advancement of society. This study aims to identify and describe trends in research and academic writings on Teacher Training in Latin America. A qualitative, descriptive study of a documentary type is presented. The results show that teacher education has been the subject of most educational reforms in the countries of this continent, which were motivated, not only by economic and political adjustments, but also occurred as a product of the struggles of the teaching groups. It is concluded that there are cultural peculiarities in the way teachers are trained in Latin America, but there are common aspects such as the influence of global economic models on current trends in teacher training or the need for educational approaches that promote the development of research skills in teachers and strengthen pedagogical knowledge beyond merely didactic or methodological models.Item Importance of Long-Term Follow-Up in the Prognosis of Mucopolysaccharidosis IV-A: A Case Report from Southwestern of Colombia(Latin American Society Inborn Errors and Neonatal Screening, 2025) Marín, Mariana Ardila; Toro, Carlos Arturo Caicedo; Banguero, Jeyson Steven Rojas; Soto, José María Satizabal; Terranova, Daniela ArturoMucopolysaccharidosis IV-A (MPS IV-A) is an autosomal recessive genetic disorder caused by a deficiency in the enzyme N-acetylgalactosamine-6-sulfatase, leading to the accumulation of chondroitin-6-sulfate (C6S) and keratan sulfate (KS). This is a rare disease, and, in Colombia, it is classified as an orphan disease under Resolution 023 of 2023. Notably, its incidence in Colombia is higher than that reported in other countries worldwide. Genomic analysis of the GALNS gene has identified more than 400 variants in affected individuals, enabling genotype-phenotype correlations. We report the case of a patient who was initially presented at the age of 5 with short stature, lower limb dysmetria, and genu valgum. Physical examination revealed coarse facial features, a short neck, pectus carinatum, multiple joint deformities, and ligamentous hyperlaxity. Enzymatic activity of GALNS was reported at 0.06 mmol/mL/hour, and complete sequencing of the GALNS gene was performed using next-generation sequencing (NGS) technology, identifying the homozygous variant c.239C>T (p.Ser80Leu), which is associated with MPS IV-A. A bioinformatic analysis classified this variant as pathogenic. This case underscores the importance of clinical presentation, the use of diagnostic methodologies, and confirmation through molecular and bioinformatic studies for an accurate and timely diagnosis, as well as the critical value of appropriate clinical follow-up.Item Surveillance of fresh artisanal cheeses revealed high levels of listeria monocytogenes contamination in the department of quindío, colombia(2021) Jaramillo-Bedoya, Elizabeth; Trujillo-Alzate, Yenny Alexandra; Ocampo-Ibáñez, Iván DaríoListeriosis is a foodborne disease caused by Listeria monocytogenes. Because outbreaks of listeriosis are associated with the ingestion of contaminated dairy products, surveillance of artisanal cheeses to detect the presence of this microorganism is necessary. We collected three types of artisanal non-acid fresh cheese (Campesino, Costeño, and Cuajada) from 12 municipalities of the Department of Quindío, Colombia. L. monocytogenes was identified using VIDAS® and confirmed with API® Listeria Rapid Kit. L. monocytogenes was detected in 104 (53.6%) of the 194 artisanal fresh-cheese samples analyzed. The highest percentages of contamination were detected in Salento (90.9%), Calracá (65.5%), Armenia (64.9%), and Filandia (50%). A significant association between municipality and contamination with L. monocytogenes was identified. However, no association could be established between the type of cheese and the occurrence of the bacterium. This is the first study on the presence of L. monocytogenes in artisanal fresh cheeses sold in the municipalities of the Department of Quindío, and the findings revealed very high percentages of contaminated samples. The presence of L. monocytogenes in artisanal cheeses remains a public health threat in developing countries, especially Colombia, where existing legislation does not require the surveillance of L. monocytogenes in food.Item Lightweight Blockchain for Data Integrity and Traceability in IoT Networks(Institute of Electrical and Electronics Engineers Inc., 2026-05-07) García, Laura; Cancimance, Carlos; Asorey Cacheda, Rafael; Zúñiga Cañón, Claudia Liliana; Garcia Sanchez, Antonio Javier; Garcia Haro, JoanData integrity and traceability are important challenges to provide security in the Internet of Things (IoT) networks, which are often vulnerable to data manipulation attacks due to their use of low-resource devices and wireless communication technologies. In this regard, blockchain is a promising solution to enhance IoT security, but the implementation of a conventional blockchain requires high computational and network connectivity resources that are not compatible with IoT networks. In this paper, we propose a lightweight blockchain for data integrity and traceability in IoT networks that adapts the Distributed Ledger Technology (DLT) feature of blockchain to the LoRaWAN wireless communication protocol. Our proposal offers data integrity without the need for complex consensus algorithms or cryptographic operations. We also have designed and implemented a logical LoRaWAN P2P topology that enables communication between the IoT nodes which comprise LoRaWAN’s characteristic star topology. Finally, we evaluate our proposal and demonstrate its feasibility and performance in terms of data traceability, and network overhead.Item Improving gait and daily function in stroke survivors: a systematic review on the effects of Transcutaneous Electrical Nerve Stimulation(Termedia Publishing House Ltd., 2025-04-02) Orozco, Maria Fernanda Serna; Rojas López, Jose Ricardo; Arias Coronel, Florencio; Payán Salcedo, Harold Andrésmortality worldwide. One of its most common sequelae is hemiplegia, a paralysis of one side of the body that affects motor and sensory functions, limiting individual performance in activities of daily living and decreasing quality of life. Transcutaneous electrical nerve stimulation (TENS) has emerged as a therapeutic alternative for the treatment of motor dysfunction in patients with hemiplegia, showing positive effects on spasticity, peripheral circulation, and the treatment of painful musculoskeletal disorders. This study was conducted to determine the effects of TENS on activities of daily living and gait in patients with stroke sequelae. Material and methods: A systematic review was carried out using a search strategy applied to MEDLINE, ScienceDirect, LILACS, WEB OF SCIENCE, and Cochrane Central Register of Controlled Trials databases. Experimental, quasi-experimental, cohort, case-control, and cross-sectional studies were included. Studies involving children and adolescents or populations with diagnoses other than stroke, studies using other types of electrical stimulation current, narrative reviews, and case studies were excluded. Results: TENS produced significant improvements in gait speed and gait endurance, and decreased spasticity. However, these improvements were more pronounced in the groups that received TENS combined with exercise. Conclusions: The use of TENS as a therapeutic strategy is associated with improved performance in activities of daily living and gait-related parameters. However, further studies are needed to consider individual cases and specific application contexts.Item Non-invasive prediction of cholesterol levels from photoplethysmogram (PPG)-based features using machine learning techniques: a proof-of-concept study(Cogent OA, 2025-02-18) Argüello Prada, Erick Javier; Villota Ojeda, Angie Vanessa; Villota Ojeda, María YoselinRegular monitoring of cholesterol levels is crucial to reducing the risk of vascular blockage and preventing atherosclerotic cardiovascular diseases. However, standardized cholesterol measurement tests involve 8–12 hours of strict fasting and blood extraction via finger pricking, which may cause pain and discomfort. This study explores the usefulness of fiducial-based features extracted from the photoplethysmogram (PPG) in estimating blood cholesterol by combining feature selection methods and machine learning techniques. We extracted 150 features from forty-six 2-minute PPG recordings and included participants’ age as a feature. Several variations of linear regressions (LR), regression trees (RT), support vector regressions (SVR), and Gaussian process regressions (GPR) were trained with the most relevant features. The rational quadratic GPR model achieved the lowest errors (MAE = 11.70, MSE = 281.57, and RMSE = 16.78 mg/dL) and the highest coefficient of determination (r2 = 0.832) when combined with ReliefF. The proposed method holds promise for developing lightweight and non-invasive approaches for blood cholesterol estimation, although it may require further validation due to the limited sample size.Item Affirmative actions for access to land Afro-descendant population in Colombia(Universidad del Zulia, 2025-02-07) Granja Escobar, Luis Carlos; Cano Quintero, María ConstanzaThe Colombian State, since the 1991 Constitution, has declared itself to be a Social State of Law, where the values of Human Rights become a fundamental pillar in the construction of an inclusive society that respects ethnic differences. In this sense, the objective of this article is to know the development of affirmative actions for access to land for the Afro-descendant population in Colombia. To fulfill the objective, a qualitative research was carried out focused on documentary analysis, taking as references the laws and decrees published from the Political Constitution of 1991. The results show that in Colombia there have been legal developments in favor of access to land for the Afro-descendant population, many of which have been constructions that have crystallized within the framework of the realities of the internal conflict. However, these advances written on paper have not been effectively reflected for the material enjoyment and enjoyment of the land of the Afro-descendant communities. In conclusion, although the Colombian legal framework offers important guarantees for the territorial rights of these communities, the gap between norm and reality is still significant.Item Approaches to the #CurateCali project, #ArteALaGaleria. (Product of the stimulus grant for Pacific territories from the Ministry of Culture) laboratory De-Formadores(25299824, 2025-04-14) Avendaño Rodríguez, Luis Alfredo; Robayo Coral, Lina JulianaObjective: This paper reflects on the project #CurateCali, #ArteALaGaleria, a research-creation proposal that addressed the personal experiences derived from confinement and the pandemic in various communities affected by the social and humanitarian crisis. Methodology: Interdisciplinary artistic creation laboratories were applied, which integrated four arts, geography and ICT, in the territory of Cali. The participants had the opportunity to resignify the space of the Santa Elena Gallery. Results: The creation experience allowed a reinterpretation of the territory, facilitating reflection on the experiences of the communities during the pandemic and confinement. Conclusions: The project contributed to the resignification of public space and the exploration of new ways of addressing social and human problems through interdisciplinary art.Item In Vitro Activity of the Triazinyl Diazepine Compound FTSD2 Against Drug-Resistant Mycobacterium tuberculosis Strains(Multidisciplinary Digital Publishing Institute (MDPI), 2025-03-02) Aranaga, Carlos; Varela, Ruben; Falco, Aura; Villa, Janny; Moreno, Leydi M.; Causse, Manuel; Martínez Martínez, LuisBackground/Objectives: Compounds derived from pyrimido-diazepine have shown selective inhibition of the susceptible Mycobacterium tuberculosis strain H37Rv. However, there is a need for studies that evaluate the activity of these compounds against multidrug-resistant strains and clinical isolates. This study aims to evaluate the antitubercular potential of FTSD2 against drug-resistant strains of M. tuberculosis. Methods: The compound 4-(2,4-diamino-8-(4-methoxyphenyl)-8,9-dihydro-7H-pyrimido[4,5-b][1,4]diazepin-6-yl)-N-(2-(4-(dimethylamino)-6-(4-fluorophenyl)amino-1,3,5-triazin-2-yl)amino)ethyl)benzenesulfonamide (FTSD2) was tested against drug-resistant M. tuberculosis strains at minimal inhibitory and bactericidal concentrations (MIC and MBC). Kill curve assays were performed to assess bactericidal activity, and cytotoxicity was evaluated in human monocyte-derived macrophages and the RAW 264.7 murine macrophage cell line. Intracellular death assays, specifically macrophage infection assays, were also conducted to evaluate the effect of FTSD2 on intracellular M. tuberculosis growth. Results: FTSD2 inhibited the growth of drug-resistant M. tuberculosis at MIC and MBC values between 0.5 and 1 mg/L. Kill curve assays demonstrated concentration-dependent bactericidal activity. No cytotoxicity was observed in macrophages at concentrations below 64 mg/L. Additionally, FTSD2 significantly suppressed intracellular M. tuberculosis growth after 192 h. FTSD2 did not inhibit the growth of nontuberculous mycobacteria, including M. avium, M. abscessus, M. fortuitum, M. chelonae, and M. smegmatis at 50 mg/L. Conclusions: FTSD2 exhibits strong potential as a leading compound for the development of new antitubercular drugs, with selective activity against M. tuberculosis and minimal cytotoxic effects on macrophages. Further studies are needed to explore its mechanisms of action and therapeutic potential.Item Tropical lakes as a novel source of oleaginous yeasts with lipid profiles for biodiesel, oleochemical, and nutraceutical applications(Springer Science and Business Media B.V., 2025-03-13) Ramirez Castrillon, Mauricio; Benavides León, Tatiana Andrea; Arcos Velasco, Lizeth Vanessa; Pantoja Pulido, Kriss Dayana; Lopez Parra, Lizbeth Lorena; Bolaños Rojas, Ana Cristina; Osorio Cadavid, EstebanOleaginous yeasts have emerged as promising microbial cell factories for lipid production, offering sustainable alternatives to traditional sources of biodiesel and nutraceuticals. In this study, the lipid accumulation potential of yeast strains isolated from two freshwater aquatic ecosystems in Cali, Colombia, was evaluated to identify novel candidates for biotechnological applications. A total of 56 strains were tested for their oleaginous nature using a gravimetric lipid assay with glucose as a carbon source. Of the assessed strains, 46.15% exceeded 20% lipid yields relative to the dry biomass. Seven strains were selected using glycerol as a carbon source, but only five yeasts were further characterized for their lipid profiles. Molecular identification revealed diverse species, including Aureobasidium sp., Papiliotrema rajashtanensis, Rhodotorula spp., and Clavispora lusitaniae. The selected strains demonstrated unique lipid profiles, with high proportions of monounsaturated and polyunsaturated fatty acids, such as oleic acid (C18:1) and linoleic acid (C18:2). In particular, Aureobasidium sp. accumulated uncommon fatty acids such as petroselinic acid under conditions induced by glycerol. This fatty acid, which has a double bond in position 6,7 and a melting point of 33 °C, highlights its potential as an alternative to margarine production, as well as a precursor to sophorolipids, estolide esters, soaps, and plastics. Rhodotorula sp. exhibited very long-chain fatty acids such as docosadienoic and docosatrienoic acids in its lipid profile. These findings underscore the biotechnological value of yeasts from lentic aquatic systems as sustainable lipid producers, paving the way for innovations in biofuels, nutraceuticals, and oleochemicals.Item Diversity analysis, distribution and abundance of mosquito (Diptera: Culicidae) assemblages at urban sector from southwestern Colombia(Springer Science and Business Media Deutschland GmbH, 2025-01-16) Bedoya Rodríguez, Francisco Javier; Guevara Fletcher, Carlos Eduardo; Pelegrin Ramírez, Jonathan StevenThe Culicidae family (mosquitoes) has great relevance worldwide, due to its involvement in generating several diseases. The Department of Cauca in Colombia is characterized as a region with the influence of several vector-borne diseases. This study aims to analyze the ecological diversity and distribution of mosquitoes with potential transmitters of diseases in a particular urban area of the municipality of Santander de Quilichao. This is one of the first studies of its kind in this municipality. Mosquito collections were carried out during the rainy and dry seasons of 2022, between 17:00 to 19:00. Morphological keys were used for species identification. For the analysis of diversity comparison vs. sampling points, Simpson's index was used, a dendrogram, rarefaction curve, and non-metric multidimensional scaling (nMDS). In the statistical analysis of species-abundances, ANOVA was applied to determine if there were significant differences regarding abundance. A total of 1116 culicid specimens were collected. The 59.4% were mosquitoes of the species Aedes aegypti, 18.5% Culex quinquefasciatus, 18.2% Aedes albopictus, and 3.9% Psorophora ferox, being the rainy season important for their survival. ANOVA analysis showed that the mean abundance of Ae. aegypti was significantly different from the other species. This study is broadly consistent with other studies in the tropical American context where the abundance of Culicidae is more representative in the rainy season. The results suggest a wide presence of Aedes mosquitoes in natural and artificial habitats, showing the importance of establishing controls and permanent epidemiological surveillance in this region.Item Application of Bayesian filters to temperature estimation in deep brain stimulation(Springer Verlag, 2025-02-28) Pereira, Caroline R.; Jardim, Lucas C. S.; Abreu, Luiz A. S.; Knupp, Diego C.; Varon, Leonardo A. B.; Silva Neto, Antônio J.This work presents an approach for estimating the temperature field and, therefore, improving the accuracy of the internal temperature assessment in a brain containing a deep brain stimulation (DBS) lead. Thus, this research provides a methodology to avoid possible undesirable burns that may occur due to the heating of the tissues around the DBS lead. The classical two-dimensional bioheat equation is considered in the modeling of the heat transfer problem, and the Laplace equation was used to model the electric potential problem. The direct problem is solved with the finite element method (FEM), finite difference method (FDM), and the hybrid numerical–analytical approach generalized integral transform technique (GITT). For the inverse problem, estimates are obtained sequentially by solving a state estimation problem with particle filter methods. Two particle filters are used: the sampling importance resampling (SIR) algorithm and the Liu & West’s algorithm. Some results are presented and critically discussed for synthetic temperature measurements with different noise levels, leading to accurate estimations. The methodology presented in this work may bring a promising sequential approach to reduce the risk of injuries related to the deep brain stimulation technique.Item Effects of consecutive dredging on the fish community of a tropical estuary(Elsevier Ltd, 2025-03) Duque, Guillermo; Gamboa García, Diego Esteban; Molina, Andrés; Cogua, PilarDredging is a human activity that significantly alters aquatic habitats, potentially impacting ecosystem services such as artisanal fishing. This study aimed to evaluate changes in fish density in Buenaventura Bay in response to three dredging events that occurred between 2015 and 2021. Fish monitoring was conducted using artisanal trawl nets before, during, and after each dredging event, with annual sampling in two areas of the bay over the study period. The findings revealed species-specific responses: while species such as the catfish Cathorops multiradiatus and the sole Achirus kluzingeri benefited from dredging, the pygmy pufferfish Sphoeroides trichocephalus was negatively affected. Contrary to common assumptions in the literature, resident estuarine species were not necessarily the most negatively impacted but instead exhibited variable responses to dredging disturbances. The fish assemblage showed a shift towards species more tolerant to these impacts, highlighting a potential loss of ecosystem resilience. These changes could have long-term implications for the productivity of artisanal fisheries and the food security of local fishing communities.