bluuebunny/crossref_metadata_2025 huggingface dataset:
Estrutura de produção da região nordeste e dos estados nos anos de 2010 e 2015: uma contribuição a partir da abordagem insumo-produto
Authors: Santos Joelson Oliviera , Leite Fabrício Pitombo
Published: March 2024

Este estudo objetiva analisar a estrutura das interações entre os setores de atividade econômica presentes na região Nordeste do Brasil, bem como nos estados pertencentes à região, em 2010 e 2015. Por meio de uma combinação de quocientes locacionais simples e regionalização de matrizes através do método de balanceamento de matrizes biproporcionais (RAS), verifica-se que a estrutura produtiva nordestina é concentrada em poucas atividades. Os estados da Bahia, do Ceará e de Pernambuco apresentaram os melhores resultados em termos de encadeamentos produtivos, ao passo que os demais estados apresentam, em geral, setores pouco dinâmicos. Ademais, os resultados significativamente díspares entre os estados mais desenvolvidos da região e os demais implicam que a histórica heterogeneidade do tecido produtivo nordestino se reafirma, de modo que há vários nordestes.
An Intelligent Fuzzy Logic Automobile Fault Diagnostic System
Authors: Akazue Maureen , Ashie John , Edje Abel
Published: March 2024

The advent of intelligent transportation systems and the growing complexity of modern automobiles necessitated innovative approaches to fault detection and diagnostics. This study presents an Intelligent Fuzzy Logic Automobile Fault Diagnostic System. It is designed to enhance the safety and reliability of automotive systems. Fuzzy logic with its ability to handle imprecise and uncertain data is harnessed to develop a robust model capable of identifying and classifying faults in real-time. The system incorporates a hybrid computerized fuzzy system, to aid vehicle owners in identifying issues with their vehicles and providing sound repairs recommendations for any malfunctioning parts. The system was implemented using web technologies; ASP.Net, Bootstrap 3.5, CSS, JavaScript, JQuery and SQL server. The results indicate its potential for widespread adoption, with the ability to reduce accidents and maintenance costs while enhancing the driving experience and provides an accuracy of 73.14% in performance. The Precision 100% and F1 Score 75.72%.
An Overview on Stimuli Sensitive Drug Delivery System
Authors: Patel Kreena , Patel Naiya , Gupta M. A. , Patel C.N.
Published: March 2024

Stimuli-sensitive systems are a state of reactivity to sensory stimulation or excitability. These systems respond to changes in the body’s physiology due to environmental factors such as temperature, enzymes, glucose, magnetic fields, redox reactions, ions, and more. They are particularly useful for the controlled and sustained delivery of drugs in the body. Controlled drug delivery has become a standard criterion in modern pharmaceutical product design, with ongoing intensive research aimed at achieving a superior drug product characterized by effectiveness, reliability, and safety. These stimuli-sensitive systems are employed in various forms for different purposes, including parenteral, ocular, peroral, rectal, vaginal, nasal, dermal, and transdermal drug delivery. This study focuses on the latest advancements in stimuli-sensitive drug delivery systems, aiming to address the limitations of traditional therapeutic methods. The goal is to achieve targeted drug release in specific areas using various endogenous and exogenous stimuli. This allows for personalized and patient-centric treatment strategies. The development of stimuli-sensitive drug delivery systems remains a significant human endeavor for successful drug delivery, given the various shortcomings of existing conventional systems. To overcome these limitations, various stimuli-sensitive drug delivery systems (DDSs) have been developed in recent years
Characterization and Influence of Video Content on the Viewer
Authors: Bonaventure Lokossou
Published: March 2024

Study of the Influence of Characterization of Audiovisual on Spectator In a highly competitive environment, a primary concern for those offering audiovisual services is ensuring an optimal Quality of Experience (QOE) for the viewer. Presently, QOE tends to be confined to evaluating the perceived audiovisual quality (AVQ) delivered by the system. This assessment typically involves testers rating quality levels on scales after viewing and listening to AV sequences processed through various technologies to be assessed. These subjective tests adhere to protocols recommended by the International Telecommunication Union. However, the actual experience, encompassing factors like fatigue or effort, isn't entirely captured by these quality scores. A more comprehensive method that evaluates not just the received AV quality but also considers the broader quality of experience could better depict how sound and image quality impact the viewer. This study focuses on exploring an alternative approach to current multimedia quality assessment methods in the context of viewing/listening to 2D or 3D AV content. The proposed method delves into QOE by analyzing subjective indicators alongside physiological (electrodermal activity, heart rate, peripheral cutaneous temperature, blood volume pulse) and ocular indicators (PERCLOS, blink duration/frequency, saccadic eye movements, pupil diameter). Physiological and ocular measurements offer advantages by bypassing the biases inherent in subjective measures (such as representativeness and scales) and by revealing phenomena like fatigue or mental effort, possibly triggered by audio and/or video degradations, which significantly impact QOE. Two experimental protocols were implemented to examine the viability of this approach. Findings indicated that AV quality variations influence subjective measures, exposing the inadequacy of quality ratings to accurately represent this impact. However, the influence of quality on physiological and ocular measurements was less straightforward. Specific factors related to certain attributes of test content, such as dynamics or brightness, may have obscured or diminished the observed effects of quality on these measurements. Nonetheless, two physiological indicators reacted to the presence of audio and/or video degradations, particularly when compounded with other factors (like 3D video or test duration effects).
Enhanced Anomaly Detection Framework for 6G Software-Defined Networks: Integration of Machine Learning, Deep Neural Networks, and Dynamic Telemetry
Authors: Sandeep Solanki Neeraj , Nadkarni Devaang , Neel Vittal Bharath Vadlamudi , Kumar Mehul , Biradar Prajakta
Published: March 2024

The advent of 6G networks ushers in a new era of intelligent network management, necessitating robust security measures to safeguard against emerging threats. This paper presents a comprehensive framework for anomaly detection tailored specifically for 6G Software-Defined Networks (SDNs), leveraging innovative ML), (DL), and dynamic telemetry techniques. The proposed framework, termed Anomaly Detection System for 6G SDNs, integrates ensemble learning (EL) algorithms and deep neural networks (DNNs) to detect anomalies within network traffic. Beginning with the preprocessing and feature selection stages, the proposed system employs an amalgam EL method to enhance the efficacy of anomaly detection. Datasets including CICDDOS2019, NSL KDD, CIC_IDS2017, and NB2015 undergo dimensionality reduction and feature subset determination to optimize performance. Furthermore, dynamic telemetry is seamlessly integrated into the proposed, enabling real- time monitoring and adaptive response mechanisms within SDN environments. By harnessing the flexibility and programmability of SDNs, the framework ensures a proactive defense against evolving threats, bolstering the security posture of 6G networks. Experimental evaluations demonstrate the effectiveness of ADS6SDN across diverse datasets, achieving high accuracies while minimizing false alarm rates. In conclusion, integrating ML, DL, and dynamic telemetry within the proposed approach offers a potent solution for enhancing the security and responsiveness of 6G SDNs. By leveraging the inherent advantages of SDN architectures, the framework not only fortifies network defenses against emerging threats but also ensures adaptability to the budding scenario of next-generation telecommunications.
Fraud Detection in NoSQL Database Systems using Advanced Machine Learning
Authors: Arjunan Tamilselvan
Published: March 2024

NoSQL databases such as MongoDB and Cassandra have been rapidly adopted in recent years because of their high performance, flexibility, and scalability. These databases present new security issues compared to SQL databases. NoSQL databases are vulnerable to fraud, intrusions and data breaches due to their dynamic schemas, lack of control over access and the focus on availability. This paper examines how advanced machine-learning techniques can be used to enhance fraud and intrusion detection in NoSQL databases. We examine different machine-learning algorithms, including neural networks and support vector machines. Random forests, clustering, and random forests can be used to analyze large databases activity logs in order to identify anomalous patterns of access indicative of malicious behavior. We examine how these models are trained online to detect emerging threats, and we validate the techniques using proof-of concept experiments on a prototype NoSQL based database. Our results show high accuracy for detecting injection attacks, unauthorized query, and abnormal database traffic, with low false-positive rates.
Insightsphere: Social Analytics Command Center
Authors: Prakash S. , Sugirtha Rajini S. Nirmala
Published: March 2024

The Social Media Command Center is a complex program designed to monitor and analyze user activity on various social media platforms. The innovative tool includes sentiment analysis to measure user sentiment and sentiment. One of its main features is the ability to disable unwanted features, allowing you to access content and communications. The system uses sentiment analysis to identify and correct harmful or counterproductive user behavior to create a better and more manageable online environment. This allows the system to distinguish between positive, negative, and neutral emotions. The plug-in feature is a special feature of the Command Center that allows administrators to disable or block user actions based on arbitrary diagnostic results. For example, if the analysis finds that there is no offensive or harmful content, the system can automatically take steps to reduce the impact by removing or reducing the scope of that content. Command Center also offers dashboards and reports that provide deep insights into social media trends, user behavior, and sentiment patterns. This helps organizations make decisions, improve community management, and maintain a better online environment.
Fake Profile Detection
Authors: Divya Varalakshmi Melam , Sruthi Siram , Kusumanjali Ungarala
Published: March 2024

Fake profile detection is a critical task in maintaining the authenticity and safety of online communities. With the rising predominance of web-based entertainment stages, the presence of phony profiles has turned into a worry. This abstract explores are various techniques used to detect fake profiles including analysing user behaviour checking for inconsistencies in profile information, and employing machine learning algorithms. The detection process involves analysing patterns and anomalies in user data to identify suspicious activity.

AI calculations assume a huge part in this cycle by gaining from marked datasets of veritable and counterfeit profiles. These calculations can investigate highlights, for example, profile pictures, posting conduct, network associations, and commitment examples to make expectations on the realness of a profile.

However, it's important to acknowledge that no detection method is foolproof. Fake profile creators constantly evolve their strategies to evade detection. Therefore, continuous monitoring, user feedback, and updates to detection algorithms are necessary to stay ahead of these malicious actors.

The ongoing efforts to detect and combat fake profiles contribute to creating a safer and more trustworthy online environment. By leveraging various techniques and advancements in machine learning, platforms strive to maintain the integrity of their user base and protect their users from potential scams and fraudulent activities.One example of a machine learning algorithm used for fake profile detection is the Random Forest algorithm.

Irregular Backwoods is a well known troupe learning technique that joins various choice trees to make expectations. With regards to counterfeit profile recognition, the Irregular Backwoods calculation can be prepared on a dataset that incorporates both certified and counterfeit profiles. The calculation gains from different elements like profile data, posting conduct, network associations, and commitment designs. I trust this theoretical furnishes you with a succinct outline of phony profile location!
A Relativistic Double Neutron Star Binary PSR J1846-0513
Authors: Zhao D. , Wang N. , Yuan J. P. , Li D. , Wang P. , Xue M. Y. , Zhu W. W. , Miao C. C. , Yan W. M. , Wang J. B. , Yao J. M. , Wu Q. D. , Wang S. Q. , Sun S. N. , Kou F. F. , Chen Y. T. , Dang S. J. , Feng Y. , Liu Z. J. , Miao X. L. , Meng L. Q. , Yuan M. , Niu C. H. , Niu J. R. , Qian L. , Wang S. , Xie X. Y. , Xiao Y. F. , Yue Y. L. , You S. P. , Yu X. H. , Zhao R. S. , Yuen R. , Zhou X. , Zhang L. , Wang Y. B. , Wu J. F. , Gan Z. Y. , Sun Z. Y. , Wang C. J.
Published: March 2024

We report the timing analysis of PSR J1846−0513, a pulsar discovered by the Five-hundred-meter Aperture Spherical radio Telescope (FAST) in Commensal Radio Astronomy FAST Survey. The pulsar possesses a spin period of 23.36 ms and a spin-down rate (

P

̇

) of 1.0106(3) × 10−18 s s−1, and it is located in an eccentric orbit (e ∼0.208) with an orbital period of 0.61 days. The characteristic age and surface magnetic field of the pulsar are found to be 366.62 Myr and 4.9178 × 109 G, respectively, indicating that it is a recycled pulsar. Using over two years of timing data, we measure the periastron advance

ω

̇

= 0.8956(8) deg yr−1. By assuming that this effect is purely relativistic, we have estimated the total mass M = 2.6287(35)M
⊙ and obtained an upper limit for the pulsar mass and a lower limit for the companion’s mass. Our results indicate that this is a double neutron star system.
New records of Oecanthus species (Orthoptera, Oecanthidae) in the Madeira archipelago
Authors: Silva Hugo Miguel , Avivar-Lozano Laura , Gomes Gonçalo , Rhee Howon , Dellinger Thomas , Aguín-Pombo Dora
Published: March 2024

The Madeira and Porto Santo Islands have both witnessed substantial habitat loss since their initial colonization. Despite their small size and the degradation of their natural habitats, they harbor a rich diversity of terrestrial invertebrates, including a significant number of endemic species. While research on Orthoptera fauna has predominantly focused on the largest island of Madeira, the smaller island of Porto Santo has remained relatively understudied. Fieldwork on both islands has led to the discovery of Oecanthus dulcisonans Gorochov, 1993 in the Madeira archipelago (Porto Santo and Madeira) for the first time. This species was described based on specimens collected in Tenerife and the Arabian Peninsula. However, its distribution, which includes parts of Africa, Western Asia, and some localities in Southern Europe, remains poorly understood. Oecanthus dulcisonans is morphologically very similar to Oecanthus pellucens (Scopoli, 1763), the only species of this genus previously recorded for the island of Madeira. Due to this resemblance, doubts have arisen regarding which of these two species is present in Madeira. By examining new material of O. pellucens, we have confirmed the presence of this species on Madeira as well. These new findings highlight the fact that, for these species, the Madeira archipelago represents the western limit of their distributional ranges in the Palearctic region.
L’analyse automatisée de données textuelles en marketing : Comparaison de trois logiciels
Authors: Helme-Guizon Agnès , Gavard-Perret Marie-Laure
Published: March 2024

Cet article compare les trois logiciels les plus utilisés en France pour l’analyse de données textuelles en marketing ( Alceste, Sphinx Lexica et Spad-T ) . Après avoir brièvement présenté leurs principales caractéristiques, nous confrontons, sur un corpus particulier, les résultats obtenus à l’aide de ces trois logiciels. Puis, nous indiquons leurs forces et faiblesses et précisons les possibilités d’utilisations complémentaires.
La peur est-elle efficace dans un contexte français de lutte contre les comportements tabagiques ?
Authors: Gallopel-Morvan Karine
Published: March 2024

Est-il pertinent de faire peur dans un contexte français de lutte contre le tabac ? Afin de traiter cette question, l’article commence par résumer les modèles théoriques de l’influence de la peur sur les réactions des consommateurs, avant de présenter une expérimentation menée sur 489 étudiants. Les conclusions de cette étude révèlent que la peur est efficace pour inciter des non-fumeurs à ne pas fumer et des fumeurs à diminuer leur consommation tabagique. En revanche, lorsqu’il s’agit de l’arrêt du tabac, un message phobique doit être accompagné d’un message de soutien qui rassure le fumeur quant à sa capacité à arrêter de fumer.
Marketing, stratégie et rhétorique
Authors: Trinquecoste Jean-François
Published: March 2024

Si les préceptes de stratégie-marketing soulignent l’importance de la cohérence entre discours et pratiques, le marketing n’hésite pas à les dissocier lorsqu’il dispose d’une faible marge de manœuvre pratique, quitte à se mettre en scène et à se brocarder lui-même.
E-parrainage sportif
Authors: Moinier Xavier
Published: March 2024

Après avoir montré en quoi l’interactivité d’Internet permet de renforcer l’efficacité du parrainage sportif, notamment en terme de mémorisation, les modalités pratiques de cette nouvelle forme de communication sont exposées. Il s’agit de comparer ces résultats à ceux des actions de parrainage traditionnel, puis de proposer des recommandations managériales pour les e-parrains.
Marketing et responsabilité sociétale de l’entreprise
Authors: Thiery Patricia
Published: March 2024

Les entreprises intègrent progressivement les notions d’éthique et de responsabilité dans leurs stratégies et pratiques marketing. Des pressions croissantes mettent les entreprises devant leurs responsabilités sociétales et les poussent à adopter des stratégies-marketing en la matière. Ces approches défensives, perçues comme autant de démarches de légitimation de leur place dans la société, gagneraient-elles à devenir des stratégies offensives et assumées ? Quels en seraient alors les enjeux ?
La diversité des états affectifs dans un point de vente
Authors: Lichtlé Marie-Christine , Plichon Véronique
Published: March 2024

Les stimuli sensoriels liés à l’atmosphère du point de vente peuvent affecter le comportement du consommateur. Certains distributeurs cherchent ainsi à valoriser l’expérience vécue par le chaland, en lui faisant éprouver différentes sensations. Toutefois, la diversité des réactions affectives pouvant être créées dans un environnement commercial n’a pas encore été mise en évidence. C’est l’objet de cette étude : elle montre que les états affectifs peuvent être représentés par six dimensions et sont d’intensité variable ; en outre, il est possible de caractériser certaines enseignes de la distribution par le type et l’intensité des réactions affectives ressenties.
ROMI : Une révolution dans la pensée et les pratiques en marketing
Authors: Merunka Dwight , Kazmierczak Jean-Bernard
Published: March 2024

La direction générale des entreprises et les directeurs marketing sont convaincus du bien fondé de la mise en place de nouvelles mesures d’efficacité des actions marketing. Les modèles et les métriques qui permettent d’évaluer l’impact financier des dépenses engagées sur les différents éléments du mix marketing sont regroupés sous le vocable de ROMI (« Return on Marketing Investment » ou retour sur les investissements marketing). Nous décrivons les difficultés et les dangers liés à la mise en place de cette démarche et de ces mesures et montrons la nécessité de leur mise en œuvre.
De l’efficacité publicitaire au retour sur investissement…
Authors: Merzereau Pascale , Zeitoun Helen , Drucker Corinne
Published: March 2024

Pascale Merzereau, Directrice du média marketing chez Carat Aegis Media France expose les implications de la problématique du ROI en agence média. Helen Zeitoun, Directrice de GfK Custom Research France et vice-présidente entreprise de l’AFM explique comment les professionnels sont passés de l’efficacité publicitaire au retour sur investissement et analyse les incidences de cette nouvelle problématique sur les métriques d’efficacité publicitaire.
Rôle des MDD de terroir dans la construction de la légitimité des distributeurs
Authors: Pierre Beylier René , Messeghem Karim , Fort Fatiha
Published: March 2024

Cet article mobilise l’approche néo-institutionnelle pour étudier l’effet des MDD de terroir sur la légitimité territoriale des distributeurs. Les résultats d’une étude quantitative auprès de consommateurs de la marque Reflets de France du groupe Carrefour, montrent que la MDD de terroir influence positivement la légitimité territoriale des distributeurs à travers l’image terroir perçue et l’attitude. Nous montrons par ailleurs que l’effet de l’image terroir perçue est plus important que l’effet de l’attitude envers la marque. Les conséquences managériales pour les enseignes se situent au niveau des stratégies d’ancrage territorial et de proximité largement déployées aujourd’hui par la plupart des distributeurs. Pour les PME et les acteurs locaux, les résultats mettent en lumière les avantages d’une coopération concertée avec les enseignes pour valoriser le territoire.
Corée : une identité en question
Authors: Guex Samuel
Published: March 2024

Beaucoup de Coréens, au Nord comme au Sud, ont aujourd’hui encore le sentiment de ne constituer qu’une seule nation ethniquement homogène et d’être radicalement différents de leurs voisins chinois et japonais. Cette identité, perçue comme immuable, s’appuie sur des éléments culturels et idéologiques où les notions de nation, d’ethnie et de race s’entremêlent. Pendant longtemps, la division n’a que peu affecté cette conviction. Pourtant, depuis quelques années, l’écart grandissant entre les deux sociétés semble remettre en question la domination exclusive du nationalisme ethnique et du mythe de la nation unique .
Neighbor event-triggered adaptive distributed control for multiagent systems with dead-zone inputs
Authors: Su Xiaohang , Liu Peng , Jiang Haoran , Yu Xinyu
Published: March 2024

The paper focused on the distributed tracking problem for a specific class of multi-agent systems, characterized by bandwidth constraint and dead zone actuators, where the bandwidth limitations exist in neighbor agents and the dead zone nonlinearity refers to a generalized mathematical model. Initially, a series of event-triggered mechanisms with relative thresholds were established for neighbor agents, ensuring that control signals were transmitted only when necessary. Next, the generalized dead zone models were decomposed into two parts: indefinite terms with control coefficients and disturbance-like terms, resulting in unpredictability and damaging effects. Subsequently, based on the backstepping procedure, final consensus controllers with multiple polynomial compensators were constructed. These controllers offset the coupling coefficients caused by event-triggered mechanisms and dead zone non-smooth. Stability analysis was given to substantiate the theoretical correctness of this method and support the claim of Zeno behavior avoidance. Finally, simulation studies were performed for the feasibility of our proposed methodology.
Revisiting “Structuring and Supporting UX Work in Academic Libraries”
Authors: Gullikson Shelley
Published: March 2024

In 2020, Weave published my research article, “Structuring and Supporting UX Work in Academic Libraries” (https://doi.org/10.3998/weave.12535642.0003.202). In it, I examined various ways that academic libraries structure and support user experience (UX) work, and I identified some structures and supports that seemed to have a positive impact on both users and UX workers. Two years after applying those findings to restructure my own position, I did not feel I was having a positive impact. I wondered if I had misunderstood or misrepresented my research participants. I decided to check in with some of them to see where I might have gone wrong.
“Saben la lengua de España, mas saben el lenguaje de palacio”. La casa de la emperatriz María de Austria como centro de transferencia castellana
Authors: González-Cuerva Rubén
Published: March 2024

Entre 1551 y 1581, María de Austria residió en el Sacro Imperio como consorte (y luego viuda) del emperador Maximiliano II. Hija de Carlos V y hermana de Felipe II, María defendió orgullosamente su herencia castellana y se integró con mucha dificultad en una corte predominantemente germanoparlante y con fuerte presencia protestante. Ella se rodeó de un amplio séquito en el que el idioma, espiritualidad y modas de España fueron dominantes. Así, las damas que servían a la Emperatriz tenían como requisito implícito hablar la lengua española y dominar los códigos cortesanos habituales en las casas reales de la tradición castellana y borgoñona. En este ambiente se educaron los quince hijos de la pareja imperial, que en mayor o menor medida tuvieron en el castellano su verdadera “lengua materna”. Dadas estas condiciones, se analizará la transferencia de la lengua castellana a partir de la casa de María de Austria en la corte imperial de Viena y Praga desde varios ángulos : la estructura material de secretarías en español; las condiciones de uso escrito y hablado del castellano, el alemán y el latín en las comunicaciones de la familia imperial y la difusión de textos de origen español, así como la producción impresa en esa lengua, en la Corte imperial. En definitiva, esta transferencia cultural que María facilitó entre Centroeuropa, la Península Ibérica e Italia se evalúa como la consolidación de una cultura cortesana cosmopolita de la Casa de Austria más que en términos nacionales de expansión de lo español.
La bifurcation précoce des jeunes diplômé·es : processus et enchaînements d’évènements impliqués
Authors: Coënt Ludivine , Diridollou Melvin , Olry-Louis Isabelle
Published: March 2024

Alors que les bifurcations professionnelles constituent un phénomène relativement bien documenté en sciences humaines et sociales, le cas de jeunes diplômé·es ayant bifurqué juste après l’obtention de leur diplôme, sans jamais avoir exercé le métier pour lequel ils ou elles ont été formé·es initialement, apparaît plus inédit. L’article examine cette question à la lumière non seulement des approches transitionnelles classiques, mais aussi de celles qui analysent les bifurcations professionnelles au sein des parcours de vie. Douze entretiens de jeunes diplômés en bifurcation précoce ont fait l’objet de trois analyses distinctes au regard : 1) de leur contenu thématique, 2) du modèle d’analyse structurale biographique, 3) et du modèle théorique Push, Pull, anti-Push, anti-Pull (2PAP). Tout en montrant de fortes similitudes entre les processus et les enchaînements d’événements impliqués dans les bifurcations précoces et les bifurcations professionnelles classiques, notamment quant à la place prise par l’idéal professionnel, par autrui, par les enchaînements d’évènements ordinaires ou hasardeux, les résultats mettent en évidence quelques spécificités propres à la socialisation professionnelle des jeunes diplômé·es et suggèrent un impact fort joué par le Covid-19 dans leurs trajectoires.
REPENSANDO A PRÁTICA DOCENTE A PARTIR DA EXPERIMENTAÇÃO INVESTIGATIVA
Authors: Scherer Hulia Juana , De Araujo Rafaele Rodrigues
Published: March 2024

O presente trabalho tem por objetivo descrever por meio de narrativas pessoais e acadêmicas de uma professora de Ciências dos anos finais, as experiências vivenciadas no ser e no fazer docente, incluindo atividades de investigação realizadas no período de pandemia e que contribuíram para a construção de novos aprendizados, tanto discentes como docente. Consideramos que o professor é também aluno, pois segue aprendendo ao longo da carreira e nunca será o detentor do conhecimento, no entanto refletimos sobre quem pode mediar sua construção. As atividades investigativas são norteadoras, em uma perspectiva interdisciplinar, pois envolvem todas as áreas em um grande projeto, possibilitando aos estudantes a resolução de inúmeros problemas, neste sentido acerca de outras temáticas relacionadas a escola ou comunidade escolar.
Delineating the Impact of social media Networks on Travel Decision-Making Process: An Experience of University Undergraduates
Authors: Jayawardena H. N. , Harshani G. H. V. , De Silva S. W. D. R. , Wijesundara W. G. S. R. , Munasingha M. M. P. K. , Umashani A. L. A. P.
Published: March 2024

In Sri Lanka, the use of social media for the travel and tourism industry is in its growth stage. Businesses use social media to be discovered and become part of travelers’ engagement in decision-making. This study aims at identifying the impact of social media on the travel decision-making process of travelers. Semi-structured interviews were conducted with 25 hospitality and tourism undergraduates in Sri Lankan universities using cluster and purposive sampling techniques. The collected data were then analyzed by using content analysis to achieve the objectives of the study. The findings revealed a strong effect of social media on university undergraduates’ travel decision-making and their willingness to engage with social media as the mode of information source. Further, the most appropriate social media platforms to promote Sri Lankan tourism destinations were also identified through this study. It is recommended that travelers use diversified information sources active engagement, seek authenticity, and exercise caution when verifying information. Put succinctly, the support of the public and private sectors is verily needed for the stability and utilization of social media for promoting Sri Lankan tourism destinations.
The Moderating Effect of Transformational Leadership on the Relationship between Employee Happiness and Organizational Citizenship Behavior
Authors: Jimoh A. L. , Yahay I. J. , Salman A.
Published: March 2024

Sometimes, employees in every organization are treated with little empathy, which lowers their motivation to execute their tasks. Organizational citizenship behavior is often related to increased organizational effectiveness. Understanding the moderating role of transformational leadership can help organizations tailor their leadership approaches to maximize the positive outcomes associated with employee happiness, ultimately contributing to the overall success of the organization. As a result, the purpose of this study is to investigate organizational citizenship behavior, transformational leadership, and employee happiness. The study's goals are to: (i) determine the effect of employee happiness on organizational citizenship behavior; and (ii) examine the moderating effect of transformational leadership on the relationship between employee happiness and organizational citizenship behavior. The population of the study consisted of 345 workers from the Lagos State Ministry of Employment. The sample size of 183 was chosen using an online sample size calculator, and the study employed stratified sampling. The study used Social Package for Social Sciences for descriptive statistics and Smart PLS 4 for inferential statistics. According to the findings, transformational leadership moderates the relationship between employee happiness and organizational citizenship behavior. The current study has made an effort to address all of the research questions and aims, despite some of its limitations.
Relationship between Social Media Marketing Activities and Consumer Response: A Comparative Study between Generations Y and Z with Reference to Retail Fashion Wear
Authors: Peiris D. P. M. S. M. , Herath H. H. N. M.
Published: March 2024

The study was conducted to identify the relationship between social media marketing activities (SMMA) and consumer response between Generation Y and Z. Although research has been done to determine the relationship between SMMA and customer response, there is a gap in the Sri Lankan context when comparing Generation Y and Generation Z in terms of retail fashion wear. Therefore, the objective of this study is to determine the relationship between SMMA and consumer response among generations Y and Z, concerning retail fashion wear in Sri Lanka. A deductive approach was adopted and the study was conducted as a survey by collecting data from 320 residents of the Colombo district who ranged in age from 10 to 25(Generation Z) and from 26 to 41 (Generation Y) years old using a convenience sampling technique. The results of the independent sample t-test showed that Generations Y and Z had considerably different responses for entertainment and customization. The findings of the correlation analysis showed a positive relationship between consumer response and SMMA aspects: entertainment, interaction, trendiness, customization, and electronic word of mouth (e-WOM) among the two generations. It was found that there is a stronger correlation between SMMA and consumer response for Generation Y than for Generation Z. Therefore, it is suggested to build a strong relationship with Generation Y to draw more customers from them via social media. These findings are crucial for fashion retailers to select the best generation to target when marketing their products on social media.
Multimodal blood loss prevention bundle for endoscopic resection of juvenile nasopharyngeal angiofibroma: A case series
Authors: Jain Ruchi A. , Parikh Devangi A. , Miranda Roshni C.
Published: March 2024

Surgery for excision of juvenile nasopharyngeal angiofibroma (JNA) carries the possibility of massive life-threatening haemorrhage. Anaesthetic management aims to maintain haemodynamic stability and reduce blood loss. This case series describes the application of the bundled approach as a multimodal blood loss prevention bundle (MBLPB). Twenty patients underwent 23 surgeries with MBLPB. The blood loss and the number of units of blood transfused were recorded. The surgeon satisfaction score was assessed. The median [interquartile range (IQR)] estimated blood loss was 1300 (650–2350) ml. Patients with tumours in stages I and II had a median (IQR) blood loss of 550 (270–750) ml compared to patients with higher grades of tumours (stages III, IV) with a median (IQR) blood loss of 2100 (1300–2500) ml. Median (IQR) units of packed red cells transfused was 1 (0–3). The surgeon’s satisfaction score was high when MBLPB was applied for JNA. However, it does not appear to reduce blood loss markedly.
Comparison between perfusion index, pleth variability index, and pulse pressure variability for prediction of hypotension during major abdominal surgery under general anaesthesia: A prospective observational study
Authors: Gunashekar Satheesh , Kaushal Ashutosh , Kumar Ajit , Gupta Priyanka , Gupta Namrata , C.S. Pooja
Published: March 2024

Background and Aims:

Short-term hypotension after general anaesthesia can negatively impact surgical outcomes. This study compared the predictive potential of the pleth variability index (PVI), pulse pressure variability (PPV), and perfusion index (PI) for anaesthesia-induced hypotension. This study’s primary objective was to evaluate the predictive potential of PI, PVI, and PPV for hypotension.

Methods:

This observational study included 140 adult patients undergoing major abdominal surgery under general anaesthesia. Mean arterial pressure, heart rate, PVI, PPV, and PI were collected at 1-min intervals up to 20 min post anaesthesia induction. Hypotension was assessed at 5-min and 15-min intervals. Receiver operating characteristic (ROC) curves were plotted to determine the diagnostic performance and best cut-off for continuous variables in predicting a dichotomous outcome. Statistical significance was kept at P < 0.05.

Results:

Hypotension prevalence within 5 and 15 min of anaesthesia induction was 36.4% and 45%, respectively. A PI cut-off of <3.5 had an area under the ROC curve (AUROC) of 0.647 (P = 0.004) for a 5-min hypotension prediction. The PVI’s AUROC was 0.717 (P = 0.001) at cut-off >11.5, while PPV’s AUROC was 0.742 (P = 0.001) at cut-off >12.5. At 15 min, PVI’s AUROC was 0.615 (95% confidence interval 0.521–0.708, P = 0.020), with 54.9% positive predictive value and 65.2% negative predictive value.

Conclusion:

PVI, PPV, and PI predicted hypotension within 5 min after general anaesthesia induction. PVI had comparatively higher accuracy, sensitivity, specificity, and positive predictive value than PI and PPV when predicting hypotension at 15 min.
Single-centre case series report of regional anaesthesia for pain management in vaso-occlusive crisis
Authors: Sousa Bárbara , Nunes Joana , Ribeiro Andreia Fiúza
Published: March 2024

Sickle cell disease is characterised by episodes of vaso-occlusive crisis, a painful complication. Regional anaesthesia has shown promising results in reducing opioid consumption and pain scores. Patients with vaso-occlusive crises who underwent regional anaesthesia in the paediatric intensive care unit were studied. Data regarding pain location, regional analgesia technique, the local anaesthetic used and dose, daily opioid consumption, daily pain scores, use of adjuvants and complications were recorded. The primary outcome was to evaluate the effect of regional anaesthesia on opioid consumption. In this study, we describe 10 cases, referring to six paediatric patients with the vaso-occlusive crisis who underwent regional anaesthesia for severe pain and were unresponsive to increasing doses of opioids. Six cases received epidural analgesia, three continuous peripheral nerve blocks and one received both techniques. Opioid consumption was reduced (58%), and pain scores decreased (72%), both statistically significant reductions.
Comparison of the effect of intravenous phenylephrine and norepinephrine boluses for post-spinal hypotension on neonatal outcome in elective caesarean section: A randomised controlled trial
Authors: Saha Prerona , Konwar Chandita , Pandey Aditya , Bharali Prabal
Published: March 2024

Background and Aims:

There is limited data on the effects of norepinephrine on neonatal outcomes and maternal complications relative to other vasopressors. The study aimed to compare neonatal outcomes and maternal complications after bolus intravenous doses of phenylephrine and norepinephrine for post-spinal hypotension in elective caesarean section women.

Methods:

This randomised study was done on 100 elective caesarean section women under spinal anaesthesia. Block randomisation divided women into two groups to receive intravenous phenylephrine 50 μg bolus (Group A) or norepinephrine 5 μg bolus (Group B) following post-spinal hypotension. Groups were evaluated and compared for umbilical arterial blood gas analysis, birth weight, APGAR (appearance, pulse, grimace, activity, and respiration) score, maternal haemodynamics, and complications. Kolmogorov-Smirnov and Shapiro-Wilk tests were used to verify data normality. Independent samples t-test or Mann-Whitney U test was employed to compare continuous variables based on data normality, and the Chi-square test was used to determine categorical variable associations.

Results:

Demographic characteristics of women were found to be comparable between groups. Umbilical arterial potential of hydrogen, partial pressure of oxygen, partial pressure of carbon dioxide, base excess, bicarbonate, birth weight, and APGAR scores were comparable across groups, showing no significant differences (P > 0.05). Groups had similar maternal haemodynamic characteristics and episodes of nausea, vomiting, and chest pain across groups without statistical significance (P > 0.05).

Conclusion:

No notable distinction was found between neonatal outcomes and maternal complications between phenylephrine and norepinephrine bolus regimens. Norepinephrine can be used as an alternative to phenylephrine post-spinal hypotension in women undergoing elective caesarean section.
Three cases of pseudoepitheliomatous hyperplasia mimicking squamous cell carcinoma of the foot: A case series
Authors: Arulselvan M. , Muthurathinam Trishna Vaishali
Published: March 2024

Pseudoepitheliomatous hyperplasia (PEH) is a benign condition characterized by hyperplasia and proliferation of the epidermis and adnexal epithelium which can mimic squamous cell carcinoma (SCC). In our first case, a 55-year-old female with a prior history of split skin graft presented with dark verrucous growth over the graft site with a nonhealing ulcer of 3 cm × 2 cm seen over the ventral aspect of the left foot. Our second case, a 59-year-old male with a prior history of split skin grafting presented with dark verrucous growth and pain over the right forefoot for 3 months. The third case, a 58-year-old man with diabetic foot ulcer with verrucous growth over the toes. In all the cases, the biopsy was done and diagnosed to be PEH. We report this case series of PEH for the proper distinction from the SCC of the skin.
An institutional study on accuracy of freehand cervical C1 C2 screws placement by knock and drill technique in craniovertebral anomalous bony anatomy: An evaluation of more than 600 screws based on SGPGI screw accuracy criteria
Authors: Sasapardhi Sudhir Bisan , Verma Pawan Kumar , Srivastava Arun Kumar , Das Kuntal Kanti , Kumar Ashutosh , Dikshit Priyadarshi , Maurya Ved Prakash , Bhaisora Kamlesh Singh , Mehrotra Anant , Jaiswal Awadhesh Kumar , Mishra Prabhaker , Behari Sanjay , Kumar Raj , Mishra Harshit , Shahare Kalyani
Published: March 2024

Purpose:

To assess the accuracy of freehand cervical C1 C2 screws placement by knock and drill (K and D) technique in craniovertebral anomalous bony anatomy.

Materials and Methods:

From January 2017 to December 2022, 682 consecutive C1 C2 screws in 215 patients with craniovertebral junction (CVJ) anomalies were enrolled. All patients underwent posterior fixation with K and D technique without any fluoroscopic guidance. The patient’s demographic details, clinical details, radiological details, major intraoperative events, and postoperative complications were noted. The screws malposition grades and direction on CT images in the axial and sagittal plane were defined as new per proposed “SGPGI accuracy criteria.” All patients had a clinical evaluation at 3-month follow-up.

Results:

Total 682 C1, C2 screws were placed in 215 patients for CVJ anomalies using K and D technique. The accuracy of screws placement by freehand technique was 84.46% (576/682). So with technique explained the rate of malplacement in simple (16.35%) and complex (15.19%) groups were almost comparable and comparison difference was not significant (P = 0.7005).

Conclusion:

The freehand technique, as described, is effective in cases of anomalous bony anatomy, and it is mandatory in complex CVJ anomalies. The accuracy of screw placement and VA injury is comparable with major studies. This technique is supposedly cost-effective and less hazardous to both health-care workers and patients.
Correction of cervical kyphoscoliosis, bisected spinal cord, and vertebral artery to epidural vein fistula in neurofibromatosis type 1
Authors: LeFever Devon , Hanks Thomas , Kumar Rakesh , Louie Philip , Leveque Jean-Christophe
Published: March 2024

Neurofibromatosis-1 (NF1) presents complex challenges due to its multisystemic effects, including kyphoscoliosis, dural ectasia, and arteriovenous fistulas (AVF). We present a case of a 31-year-old male with NF1 exhibiting severe cervical kyphoscoliosis, dural ectasia, a bisected cervical cord, and an arteriovenous fistula, highlighting the intricacies of managing such intricate cases. Rapid weakening in the patient’s right arm and leg prompted imaging revealing severe cervical kyphotic deformity and a dural fold dividing the spinal cord. Surgical intervention addressed a high-flow arteriovenous fistula involving the right vertebral artery and an epidural vein, necessitating sacrifice of the artery. Posterior fusion and laminectomy were performed, resulting in stable neurological status postoperatively and significant improvement in sensory loss and weakness at three months. This case underscores the importance of a tailored posterior-only approach, involving dural fold release, to allow the spinal cord to relocate to a less tense position, thus demonstrating effective decompression in complex NF1 cases with concurrent kyphotic deformity and vertebral artery AVF.
The demographic, clinical, and management differences between traumatic dens fracture patients with and without simultaneous atlas fractures
Authors: Cloney Michael Brendan , Texakalidis Pavlos , Roumeliotis Anastasios G. , Thirunavu Vineeth , Shlobin Nathan A. , Swong Kevin , El Tecle Najib , Dahdaleh Nader S.
Published: March 2024

Introduction:

Atlas fractures often accompany traumatic dens fractures, but existing literature on the management of simultaneous atlantoaxial fractures is limited.

Methods:

We examined all patients with traumatic dens fractures at our institution between 2008 and 2018. We used multivariable logistic regression and ordinal logistic regression to identify factors independently associated with presentation with a simultaneous atlas fracture, as well myelopathy severity, fracture nonunion, and selection for surgery.

Results:

Two hundred and eighty-two patients with traumatic dens fractures without subaxial fractures were identified, including 65 (22.8%) with simultaneous atlas fractures. The distribution of injury mechanisms differed between groups (χ2
P = 0.0360). On multivariable logistic regression, dens nonunion was positively associated with type II fractures (odds ratio [OR] = 2.00, P = 0.038) and negatively associated with having surgery (OR = 0.52, P = 0.049), but not with having a C1 fracture (P = 0.3673). Worse myelopathy severity on presentation was associated with having a severe injury severity score (OR = 102.3, P < 0.001) and older age (OR = 1.28, P = 0.002), but not with having an atlas fracture (P = 0.2446). Having a simultaneous atlas fracture was associated with older age (OR = 1.29, P = 0.024) and dens fracture angulation (OR = 2.62, P = 0.004). Among patients who underwent surgery, C1/C2 posterior fusion was the most common procedure, and having a simultaneous atlas fracture was associated with selection for occipitocervical fusion (OCF) (OR = 14.35, P = 0.010).

Conclusions:

Among patients with traumatic dens, patients who have simultaneous atlas fractures are a distinct subpopulation with respect to age, mechanism of injury, fracture morphology, and management. Traumatic dens fractures with simultaneous atlas fractures are independently associated with selection for OCF rather than posterior cervical fusion alone.