bluuebunny/crossref_metadata_2025 huggingface dataset:
Differentiating the Presence of Brain Stroke Types in MR Images using CNN
Architecture
Authors: Kaliannan Srisabarimani , Rengaraj Arthi
Published: February 2024

Backgroud:

Stroke is reportedly the biggest cause of death and disability in the world, according to the World Health Organisation (WHO). The severity of a
stroke can be lowered by recognising the many stroke warning indicators early on. Using CNN, the primary goal of this study is to predict the
likelihood that a brain stroke would develop at an early stage.

Objective:

The novelty of the proposed work is to acquire models that can accurately differentiate between stroke and no-stroke (normal) cases using MR
Imaging sequences like DWI, SWI, GRE and T2 FLAIR aiding in timely diagnosis and treatment decisions.

Methods:

A dataset comprising real time MRI scans of patients with stroke and no-stroke conditions was collected and preprocessed for model training. The
preprocessing involves standardizing the resolution of the images, normalizing pixel values, and augmenting the dataset to enhance model
generalization. The ResNet, DenseNet, EfficientNet, and VGG16 architectures were implemented and trained on the preprocessed dataset. The
training process involved optimizing model parameters using stochastic gradient descent and minimizing the loss function.

Results:

The results demonstrate promising performance across all models by obtaining an accuracy of 98% for ResNet, DenseNet and EfficientNet, while
97% for VGG16 in differentiating the stroke using real time MRI data.

Conclusion:

The proposed work explored the effectiveness of CNN models, including ResNet, DenseNet, EfficientNet, and VGG16, for the differentiation of
stroke and no-stroke cases. The models were trained and evaluated using a real-time dataset of brain MR Images. The obtained accuracies highlight
the potential of CNN models in accurately differentiating between stroke and non-stroke cases.
Pengembangan asesmen biologi berbasis keterampilan berpikir kritis terintegrasi nilai Islam
Authors: Nawawi Sulton , Wijayanti Tutik Fitri
Published: February 2024

Penelitian ini bertujuan untuk mengetahui karakteristik dan kelayakan asesmen berbasis berpikir kritis terintegrasi nilai islam. Penelitian ini merupakan penelitian dan pengembangan. Produk yang akan dikembangkan berupa asesmen berbasis berpikir kritis terintegrasi nilai islam. Pengembangan yang dilakukan menggunakan model prosedural dengan mengadaptasi model penelitian dan pengembangan Mclntire Miller (2007). Validasi ahli dilakukan oleh 3 validator ahli: 1) ahli materi; 2) ahli evaluasi pendidikan; dan 3) ahli nilai islam. Uji coba pertama dilakukan pada siswa kelas XI SMA Nadhatul Ulama dan SMA Muhammadiyah 4 Palembang sebanyak 70 siswa. Uji validasi tes dilakukan pada siswa Kelas X SMA Daarul Aitam, SMA Nadhatul Ulama, SMA Azhariyah, SMA Muhammadiyah 3 Palembang, SMA Muhammadiyah 4 Palembang, SMA Muhammadiyah 9 Palembang, SMA YP Nurfauzan, dan SMA Ashanadiyah. Hasil penelitian ini berupa asesmen biologi berbasis berpikir kritis terintegrasi nilai islam berbentuk soal pilihan ganda yang didalamnya terdapat materi biologi kelas X semester 1 2 yang dintegrasikan dengan indikator berpikir kritis serta nilai islam. Kelayakan asesmen biologi berbasis berpikir kritis terintegrasi nilai islam berdasarkan validator ahli hasilnya berkualifikasi baik sampai dengan sangat baik serta berdasarkan hasil validitas empirik butir soal dinyatakan valid dan reliabel sehingga dapat digunakan untuk mengukur keterampilan berpikir kritis terintegrasi nilai islam pada siswa.
Improving the skills of prospective elementary teachers in designing earth and space science digital teaching materials: TPACK framework
Authors: Rukmana Diki , Handayani Sri Lestari
Published: February 2024

This study aims to implement an Earth and Space Science lecture program based on the TPACK framework to improve the skills in designing earth and space learning materials prepared for teaching at the elementary school level by integrating pedagogy and technology. The lecture program is structured based on 3 levels of the TPACK framework where at the first level 3 basic competencies are introduced, namely pedagogical knowledge (PK), content knowledge (CK), and technological knowledge (TK). At the next stage, lecture activities are designed by integrating two of the three basic knowledge, namely pedagogical content knowledge (PCK), technology pedagogical knowledge (TPK), and technology content knowledge (TCK). In the last stage, lecture activities were designed to combine the three basic knowledge aspects, namely technology pedagogical content knowledge (TPCK) into a learning video product. The results show an increase in the TPACK competence of prospective teachers in the medium category. In addition, based on an assessment of the resulting digital teaching products, the TPACK framework-based lecture program is able to facilitate the formation of the skills of prospective teachers in making teaching materials in terms of the appearance of the presentation of teaching materials, content management, and the integration of pedagogical strategies and technology in a good category.
Development of electronic handouts for class X high school ecosystem materials for online learning
Authors: Hutagaol Jeklin , Wicaksana Ervan Johan , Siburian Jodion
Published: February 2024

Students' low interest is the most common problem in online learning. As a solution, we need media that is attractive and easy to use. This study aims to (1) develop electronic handouts on the Ecosystem topic for class 10th-grade senior high school for online learning, (2) determine the feasibility of handouts, (3) determine teacher perceptions of handouts, and (4) determine student perceptions after using handouts in learning. This study uses a 4D development model. The subjects of this study were 10th-grade high school students consisting of small groups (6 students) and large groups (26 students). The results of this study indicate that the validity of the material reaches a percentage of 90% in the "very good" category, the validity of the media reaches a percentage of 95% in the " very good " category, the teacher's perception results in the percentage of 90.83% in the "very good" category, the percentage of satisfaction is average. The small group average was 89.72% in the "very satisfied" category, and the average satisfaction percentage for the large group was 90.12% in the "very satisfied" category. So it can be concluded that electronic handouts can be used in online learning. This research handout can be used as an alternative learning resource to increase students' interest in learning.
Science process skills of prospective science teachers' in practicum activity at the laboratory
Authors: Wola Brian Ricard , Rungkat Jovialine Albertine , Harindah Gerry Michael Donad
Published: February 2024

This research aims to determine the prospective science teachers' mastery level of science process skills (SPS), the mastery level of SPS indicators, and the prospective science teachers' mastery level of SPS based on gender. This study used a descriptive method with a quantitative approach. Purposive sampling techniques are used and obtain 23 prospective science teachers during the last two years at the Universitas Negeri Manado. The research instrument used interview guidelines and observation sheets. The results showed (1) the prospective science teachers' mastery level of SPS in practicum activity at the laboratory is 80% categorized as sufficient; (2) the mastery level of SPS indicators by prospective science teachers: classifying 87% categorized as good, observing 86% categorized as good, asking questions 82% categorized as sufficient, experimenting 81% categorized as sufficient, planning an experiment 79% categorized as sufficient, interpreting data 77% categorized as sufficient, and communicating 70% categorized as very poor; (3) based on gender, the mastery level of the SPS by prospective female science teachers (83%) is higher than prospective male science teachers (73%). The findings are useful for science education lecturers to direct their laboratory teaching for prospective science teachers to master science process skills.
The Effectiveness of the PhET-Assisted Creative Problem Solving Model on Students' Creative Thinking Abilities and Cognitive Learning Outcomes
Authors: Yani Liyana Putri , Widiyatmoko Arif
Published: February 2024

This research aims to determine the effectiveness of the PhET-assisted creative problem solving model on creative thinking abilities and student learning outcomes in vibration, wave and sound materials. In this research, the samples taken were determined based on the characteristics of the two classes which were almost the same (homogeneous). The characteristics used are the average UAS scores of two classes which are close to the same and the science teacher who teaches in the same class. The sample chosen was class VIII with class A as the control class and class B as the experimental class with a total of 16 students in each class. This research uses an experimental method with a nonequivalent control group design. Data on students' cognitive learning outcomes were taken using a test method in the form of 15 multiple choice questions, while students' creative thinking abilities used a test method in the form of 5 descriptive questions which had been tested for validity and reliability with a significance level of 5%, resulting in rcount rtable. Research data was obtained from pretest-posttest scores and analyzed using the MANCOVA statistical test. The results of the multivariate analysis show that the sig value is 0.05, namely 0.001 0.005, which means that there is a significant influence. The N-gain results show an increase in creative thinking abilities by 56.57% and an increase in students' cognitive learning outcomes by 57.08% which is included in the medium category. Therefore, it can be concluded that the use of the creative problem solving model assisted by PhET significantly increases students' creative thinking abilities compared to conventional learning. In addition, there is a significant increase in the cognitive learning outcomes of students who use this model. The implementation of PhET as an interactive learning tool opens up opportunities for students to understand science concepts in a more in-depth and contextual way. Implications of these findings include increased student engagement, development of innovative learning models, and emphasis on problem-based learning. This research contributes to educational practitioners and researchers in understanding the potential of the PhET-assisted creative problem solving model as a practical approach to improving students' learning outcomes and creative thinking abilities in the context of science learning.
Older LGBTQ People and Religious Abuse: Implications for the UK Regulation of Care Provision in Later Life
Authors: Westwood Sue , Hafford-Letchfield Trish , James Jemma
Published: February 2024

Research suggests health, social care, and social work professionals who are highly religious, and adhere closely to traditional doctrine, are more likely to take a negative view of LGBTQ people. This includes those who provide services to older people. Negative attitudes towards lesbian, gay, bisexual, trans and/or queer (LGBTQ) people can translate into poor care and even abuse. This commentary discusses recent literature on older LGBTQ people’s experiences of religious abuse. It highlights the concerns among many older LGBTQ people about care from religious based providers where religion becomes a factor leading to abuse, associated with microaggressions, psychological abuse, harassment, discriminatory abuse, neglect, and poor care. Even though only a minority of religious care providers may hold negative attitudes towards LGBTQ people, and even fewer may allow this to inform poor/abusive practice, this is nonetheless an area of concern and merits further investigation. All care providers, including those with strongly held religious beliefs, should deliver equally good, affirmative, non-abusive care to older LGBTQ people, and to LGBTQ people of all ages.Key wordsLGBTQ; religious care providers; abuse; adult protection; equality and human rights; law
Self-Healing Concrete Techniques and Technologies and Applications
Authors: Hanna John
Published: February 2024

The main weakest point of concrete is its exposure to cracks, and concrete structure repair is expensive, especially for infrastructure maintenance, which is difficult to access. The ability of self-healing concrete (SHC) to successfully heal fractures without the assistance of humans has received much attention since it increases operational life and lowers maintenance expenses. This paper reviews various techniques and technologies of autogenous and autonomous self-healing concrete. Much more attention is given to the autonomous SHC, including the encapsulation materials, capsule geometries, and healing agents. This is due to its accuracy for healing locations and better healing capabilities compared to the uniform hydration of autogenous SHC. Polymeric materials have shown great potential in both capsules and healing agents. Because they can meet the unusual demands of capsules, which include being flexible when mixing concrete and becoming brittle when cracks develop, the healing agent's viscosity must be low enough to allow it to flow out of the capsules and fill tiny cracks. In contrast, if the viscosity is too low, the healing agent will either seep out of the fracture or be absorbed by the pores of the concrete matrix. Additionally, some projects have been cited to demonstrate the feasibility of self-healing concrete in the construction industry.
Tendencias de investigación básica y desarrollo tecnológico para la cadena productiva de cacao 2012
Authors: Flórez Martinez Diego Hernando , Morales Castañeda Alexis
Published: February 2024

Como parte de la estructuración del Sistema Nacional de Ciencia y Tecnología Agropecuaria (SNCTA), como iniciativa clave para el fortalecimiento y consolidación de una visión compartida entorno al direccionamiento estratégico que debe tener la investigación del sector, el desarrollo de apuestas productivas y la estructuración de una línea de base. Es necesario conocer el estado actual a nivel mundial de las tendencias en investigación y desarrollo, para las diferentes cadenas productivas del país.
Digital Health Literacy of the Population in Germany and Its Association With Physical Health, Mental Health, Life Satisfaction, and Health Behaviors: Nationally Representative Survey Study (Preprint)
Authors: König Lars , Kuhlmey Adelheid , Suhr Ralf
Published: February 2024

BACKGROUND

Digital health literacy, also known as eHealth literacy, describes the ability to seek, find, understand, and apply health information from the internet to address health problems. The World Health Organization calls for actions to improve digital health literacy. To develop target group–specific digital health literacy interventions, it is necessary to know the digital health literacy of the general population and relevant subgroups.

OBJECTIVE

This study aims to representatively assess the digital health literacy of the population in Germany and relevant subgroups. The results are meant to facilitate the development of target group–specific digital health literacy interventions. Additionally, this study further explores the associations between digital health literacy and physical health, mental health, life satisfaction, and diverse health behaviors.

METHODS

Study participants were drawn from a representative panel of the German-speaking population with internet access. To further increase the representativeness of the sample, survey weights were calculated using an iterative proportional fitting procedure. Participants answered a series of questionnaires regarding their digital health literacy, physical health, mental health, life satisfaction, and diverse health behaviors. Two-sided independent sample t tests were conducted to determine the significant differences between societal subgroups. Pearson correlation coefficients were calculated to explore the correlates of digital health literacy.

RESULTS

Digital health literacy is unevenly distributed within German society. The results of this study suggest that people with a low level of formal education and people with a low social status would benefit from digital health literacy interventions that address their competencies in the domains of information seeking and information appraisal. Furthermore, the results suggest that older people would likely benefit from digital health literacy interventions that address their competencies in the domains of information seeking and also information appraisal. Regarding sex, this study suggests that men might benefit from digital health literacy interventions that specifically address their competencies in the domain of information seeking. Furthermore, digital health literacy is weakly positively correlated with physical health, mental health, life satisfaction, exercise routines, fruit consumption, and vegetable consumption.

CONCLUSIONS

Overall, the results of this study demonstrate that digital health literacy is associated with diverse health outcomes and behaviors. Furthermore, the results provide a starting point for the development of target group–specific digital health literacy interventions.
Enhancing CPR Quality through Smartwatch: A Neural Network Approach (Preprint)
Authors: Rao Gaurav , Savage David W. , Erickson Gabrielle , Kyryluk Nathan , Lingras Pawan , Mago Vijay
Published: February 2024

BACKGROUND

In the event of cardiac arrest, providing immediate, high-quality cardiopulmonary resuscitation (CPR) and applying a defibrillator are crucial for patient care. High-quality CPR is defined by chest compressions at a rate of 100–120 per minute and a compression depth of 50–60 mm. However, during an emergency, monitoring the count and depth of compressions poses a significant challenge for individuals administering CPR.

OBJECTIVE

This study introduces a neural network model designed to predict and assess the quality of CPR utilizing accelerometer data from a participant’s smartwatch.

METHODS

This research involved collecting real-world chest compression data from 83 participants performing CPR on a mannequin, with accelerometer data captured via smartwatches worn by the participants. This data was employed to train the model against a gold-standard dataset from the mannequin. The accelerometer-derived compression data were aligned with those from the mannequin dataset. Subsequently, the data were segmented into five-second intervals to facilitate training the neural network models.

RESULTS

Throughout the study, 1,226 neural network models were developed, incorporating variations in hyperparameters and the dataset. The optimal model demonstrated the capability to accurately predict the number of compressions and the average compression depth within a five-second interval, achieving an accuracy of ±3.8 mm and an average deviation in compression count of 0.8.

CONCLUSIONS

The study validates the efficacy of a neural network model in accurately predicting CPR metrics, outperforming other models discussed in the literature and involving a considerably large participant base.

CLINICALTRIAL

The ethics application for this research received approval from TBRHSC (REB 2022519), allowing the collection and use of participant data for research purposes. Furthermore, all participants gave written consent for their data to be collected and used in this study.
Amino Acid Profile and Physicochemical Properties of African Locust Bean (Parkia biglobosa) Seeds as affected by Combined Irradiation and Cooking
Authors: O Asunni Alex , Fagbemi Stephen A. , Oyinloye Ajibola M. , Gowon Catherine B. , Enujiugha Victor N.
Published: February 2024

This study examined the impact of cooking, Co-60 gamma irradiation (5 kGy and 10 kGy) and combined irradiation (10 kGy) and cooking treatments on the amino acid profile and physicochemical properties of African locust bean (Parkia biglobosa) seeds, as well as the quality of the seed oil. The treated and untreated (control) seeds were mechanically dehulled and milled into flour using an attrition mill, and subsequently analysed for chemical composition, amino acid profile, functional properties and quality of the seed oil. The results showed a significant increase in the fat content (p ≤ 0.05) after cooking and post-irradiation cooking treatments. The cooked seed samples recorded a 3.84% increase in total mineral content although there was a loss in the total percentage minerals after combined irradiation and cooking which could be linked to leaching of soluble minerals into cooking water. The 10 kGy irradiation dose improved the total essential amino acids present in the seed possibly due to the lyses of adherrent microflora. Percentage cysteine was highest in the 5 kGy irradiated seed sample with about 4.8% increase compared to control. There was a 92.6% loss in foaming capacity of the seed flour as a result of processing; however, 5 kGy irradiated sample recorded only about 26% loss in the foaming capacity. The anti-nutrients were significantly reduced by cooking, irradiation, post-irradiation cooking up to about 60%, 40%, 26.7% and 60% for cooked, 5 kGy irradiated, 10 kGy irradiated and post-irradiated cooked samples, respectively. Tannin content was not significantly affected (p<0.05) by the irradiation treatments; it was however reduced significantly by post-irradiation cooking. The 5 kGy and 10 kGy doses did not significantly affect iodine value of the oil sample. There was however an increase in iodine value as a result of cooking and post-irradiation cooking with values as high as 163.53 g I2 and 182.77 g I2 per 100g, respectively. Overall, it could be concluded that medium dose gamma irradiation did not negatively affect the quality of the African locust bean seed, which is desirable for elongation of storage life of the seed.
épave en dos novelas de Juan Benet
Authors: Del Castillo Reyes Hugo Enrique
Published: February 2024

Este artículo parte de un breve contexto del ámbito literario en el que aparece la obra de Juan Benet y de algunas concepciones críticas clave para caracterizar su literatura y comprender de forma global su proyecto narrativo. A partir de ello se analiza la forma en que el autor, en su discurso ensayístico, utiliza la figura metafórica del barco fantasma para explicar la estampa como un tipo de narración que privilegia el planteamiento de un misterio sin resolución. Después se revisa cómo Benet da un paso más allá dentro de su narrativa, pues propone en sus novelas una figura que además lleva el navío al naufragio: la épave. Este análisis se centra en describir los posibles significados de la épave al contrastarla con la aporía y en su desarrollo como un concepto simbólico que subyace en Volverás a Región y Saúl ante Samuel, novelas que significan el principio y el fin del ciclo de Región.
¿Es Venezuela un Estado parte de la Convención Americana de Derechos Humanos? Reflexiones al hilo del asunto Alfredo José Chirinos Salamanca y otros vs. Venezuela ante la Corte Interamericana de Derechos Humanos
Authors: Bertot Triana Harold
Published: February 2024

El artículo analiza la situación de Venezuela con respecto a la Convención Americana de Derechos Humanos en el marco del caso Alfredo José Chirinos Salamanca y otros vs. Venezuela ante la Corte Interamericana de Derechos Humanos (Corte IDH). A partir de la existencia de dos autoridades con reclamo de la representación internacional de Venezuela, y con distintas posiciones sobre el sistema interamericano de protección de derechos humanos, examina la competencia de la Corte para resolver si un Estado es parte de la Convención Americana y si puede resolver una disputa relativa a su jurisdicción que tiene como base la validez o no del depósito de ratificación de la Convención ante la Secretaría General de la Organización de los Estados Americanos.
La regulación del derecho de asilo en el IV Concilio de México (1771), y sus consecuencias en la práctica judicial
Authors: Terráneo Sebastián
Published: February 2024

En Indias, el asilo en sagrado dio origen a problemas de diversa índole, pero, sobre todo, fue fuente de frecuentes conflictos entre ambas potestades que se acentuarán en el siglo XVIII. En el marco de la celebración del Concilio Provincial de México de 1771, el presente artículo estudia la Disertación V del asistente real, Antonio J. de Rivadeneira, Sobre la materia del asilo o inmunidad local de iglesias o lugares sagrados, a partir de un expediente judicial sustanciado ante la audiencia episcopal del arzobispado de México. En la referida causa, la autoridad eclesiástica manifiesta que la tramitación del expediente implicó la fractura con la praxis anterior entre la Iglesia y la autoridad secular en la sustanciación de los procesos de extracción de delincuentes no beneficiados con el derecho de asilo. El objeto de esta investigación es de determinar si la disertación V de Antonio de Rivadeneira está presente o influyó de algún modo en este cambio, y en la fundamentación de las posiciones de los actores del proceso.
Conquista y poblamiento en la Nueva España del siglo XVI. “Un negocio familiar”
Authors: Hillerkuss Thomas
Published: February 2024

En este artículo se analizarán las trayectorias de dos individuos de un mismo linaje o familia: Miguel de Ibarra (que arribó a Nueva España en 1526) y su so-brino, Diego de Ibarra. Se compararán las trayectorias seguidas por cada uno, y a través de ello, se determinará la importancia y trascendencia de las relaciones y redes de alian-zas y patronazgos establecidas con otros personajes militares y políticos novohispanos, y de cómo estas condiciones determinaron la vida y trayectoria de ambos personajes de la familia Ibarra.
Historiar la enseñanza del derecho privado, civil y mercantil en la Universidad de Guanajuato
Authors: Lara Valdés José Luis
Published: February 2024

El derecho ha sido campo del saber disciplinario que distingue a instituciones educativas, se le ha definido por el orden legal, anhelo social, y prestigio de aquellas entidades federativas que a partir de la era independiente han tenido, como el Colegio del Estado de Guanajuato, el estudio, la enseñanza y aplicaciones de la legalidad, la Universidad de Guanajuato contextualiza procesos del devenir histórico, el campo del saber disciplinario, estudios históricos sobre el derecho y su enseñanza, en el tiempo. Historiar el derecho y su enseñanza es materia que no cesa, reconocemos hitos historiográficos en diferentes interpretaciones. Esta es otra historia más para acrecentar el saber sobre la disciplina, como ha sido construida, desde el paradigma de ambos derechos, el canónico y el civil, en la etapa cuando se definía lo esencial de uno para lo sustantivo de otro. En el siglo XIX se establece la carrera de Foro, Leyes, o Derecho, en contexto de luchas ideológicas por la construcción del Estado mexicano, desde las Leyes de Reforma a partir de 1856 y la Constitución liberal, hasta la siguiente Constitución de 1917, con las secuelas de la educación en tanto eje legal de la sociedad.
Notas sobre el concepto de “litigante” en la tradición jurídica mexicana
Authors: Cruz Barney Oscar
Published: February 2024

Este análisis se adentra en las distintas interpretaciones de la figura del litigante en el ámbito jurídico mexicano, refutando la noción errónea de que un abogado es automáticamente un litigante. Se destaca la importancia de la distinción entre el titular del derecho y su apoderado, remontándose a la literatura jurídica mexicana del siglo XIX. Se cita el Reglamento de 1826, las Lecciones de Práctica Forense Mejicana de Manuel de la Peña y Peña, y otras obras de la época para respaldar la idea de que el litigante es siempre el titular del derecho en cuestión, pudiendo o no ser el cliente del abogado que actúa como su patrono en el procedimiento.
Bridging the gap between science deniers and voice of reason
Authors: Poliaková Karolína
Published: February 2024

In the 2021 book “How to Talk to a Science Denier: Conversations with Flat Earthers, Climate Deniers, and Others Who Defy Reason”, Lee McIntyre introduces different anti-science movements and their reasoning. Based on personal interactions with committed science deniers and literature from various disciplines including cognitive psychology, he argues that all these communities use the same playbook in terms of reasoning about evidence, argumentation, demands on scientific certainty and recruitment of new members. Such observations allow McIntyre to propose a universal strategy to combat these beliefs by using respectful in-person engagement and effective science communication tools. His argument is rooted in the idea that anti-science beliefs are built on identities, not on the content of specific beliefs.
Taming the Rotating Wave Approximation
Authors: Burgarth Daniel , Facchi Paolo , Hillier Robin , Ligabò Marilena
Published: February 2024

The interaction between light and matter is one of the oldest research areas of quantum mechanics, and a field that just keeps on delivering new insights and applications. With the arrival of cavity and circuit quantum electrodynamics we can now achieve strong light-matter couplings which form the basis of most implementations of quantum technology. But quantum information processing also has high demands requiring total error rates of fractions of percentage in order to be scalable (fault-tolerant) to useful applications. Since errors can also arise from modelling, this has brought into center stage one of the key approximations of quantum theory, the Rotating Wave Approximation (RWA) of the quantum Rabi model, leading to the Jaynes-Cummings Hamiltonian. While the RWA is often very good and incredibly useful to understand light-matter interactions, there is also growing experimental evidence of regimes where it is a bad approximation. Here, we ask and answer a harder question: for which experimental parameters is the RWA, although perhaps qualitatively adequate, already not good enough to match the demands of scalable quantum technology? For example, when is the error at least, and when at most, 1%? To answer this, we develop rigorous non-perturbative bounds taming the RWA.
We find that these bounds not only depend, as expected, on the ratio of the coupling strength and the oscillator frequency, but also on the average number of photons in the initial state. This confirms recent experiments on photon-dressed Bloch-Siegert shifts. We argue that with experiments reporting controllable cavity states with hundreds of photons and with quantum error correcting codes exploring more and more of Fock space, this state-dependency of the RWA is increasingly relevant for the field of quantum computation, and our results pave the way towards a better understanding of those experiments.
O impacto da pandemia – Coronavírus no uso de tecnologia educacional: uma pesquisa exploratória no Estado do Rio de Janeiro.
Authors: T Lannes Vieira Anna Myrian , Greenhalgh Lins Arnaldo , Fernandes Roppa Cruz Valéria , Coelho Maria Priscilla , Martins Rodrigues M Carolina , Rodriguez Martius Vicente Rodriguez y
Published: February 2024

O ano de 2020 foi marcado com o surgimento da pandemia pelo novo coronavírus, as escolas e grandes centros de conhecimento foram obrigados a se reinventarem. Diversos aplicativos e ferramentas como o Google Classroom, Google Meet e Zoom começaram a ser empregados no ensino remoto assistido por tecnologia. Este estudo possui carácter exploratório e descritivo e apresenta uma pesquisa realizada junto a professores de escolas e centros de ensino no Rio de Janeiro durante o período de pandemia. Objetivou-se a apresentação de novos recursos e ferramentas, além de inovações no ensino, bem como a criatividade para manter o espírito da sala de aula vivo durante o ensino à distância (EAD).  Observou-se que as instituições privadas se adaptaram rapidamente ao EAD, conseguindo minimizar o atraso com a interrupção das atividades presenciais. Já instituições públicas tiveram como objetivo a promoção da inclusão digital dos alunos mais desfavorecidos socioeconomicamente. As ferramentas de ensino mais utilizadas foram o Google Classroom e Google Meet. Apesar do impacto da crise econômica gerada pelo coronavírus foi observada uma revolução no método de ensino e a aceleração importante da digitalização da educação.

Palavras- chave: coronavírus; educação; inovação.
THE INFLUENCE OF BUREAUCRACY ON THE PERFORMANCE OF PUBLIC ORGANIZATIONS
Authors: Schneider Leandro Rodrigo
Published: February 2024

The use of bureaucratic structures by public organizations since the 20th century, besides being essential, has brought significant advances. However, bureaucracy came to be seen as inefficient, the opposite of what was proposed. Developed and implemented in organizations in a rational-legal form through pre-established structures of organization of the processes and actions of employees, this text presents its characteristics, advantages and disadvantages ("dysfunctions"). Analyzingthe studies that relate the bureaucratic structures with the influence on the performance of public organizations, it is concluded that the problem is not bureaucracy itself, but the excesses of its use and that its proper implementation contributes to reduce performance.
Satisfação de clientes em uma empresa prestadora de serviço: modelo SERVQUAL
Authors: Barbieri da Rosa Luciana Aparecida , Umpierre Pablo Rodriguez , Martins Rodrigues Maria Carolina , Godoy Taís Pentiado , Camargo Caroline Rosseto , Godoy Leoni Pentiado
Published: February 2024

As distintas mudanças sociais, culturais e políticas que acontecem no ambiente empresarial, impactam significativamente nas organizações. Para isso é preciso mensurar a satisfação do cliente, ou seja, analisar a expectativa e o desempenho. Utilizando como base o modelo SERVQUAL, um modelo baseado nas dimensões da qualidade, assim medindo o serviço. O objetivo do estudo é avaliar a qualidade da prestação do serviço, tendo em vista mapear as expectativas e potencializar a percepção do serviço. aplicou-se um questionário desenvolvido e adaptado do estudo de Bastos, Inacio e Bergiante (2015). Os sujeitos desse estudo foram os clientes da empresa Beta, resultando uma população total de cinquenta e um clientes. Por meio dessa investigação possibilitou-se identificar a existência de fatores que podem ser melhorados, com relação aos serviços prestados pela empresa, no  sentido de oferecer serviços de maior qualidade.Os resultados deixam claro que, em algumas questões, a importância é excedida, existindo necessidades de mudanças, principalmente, no que tange à dimensão tangível, e presteza, cada dimensão com duas questões com Gaps negativos e a dimensão empatia com uma questão de Gap negativo.
Transatlantic relations between the US and the EU in the second and third decades of the 21st century - main challenges
Authors: Niewiadomski Michał , Niemczyk Agata , Pereira Fernanda , Surówka Marcin
Published: February 2024

Historically, the development of new technologies has led to higher increase in productivity in Europe and the US compared to the rest of the world. This resulted in economic asymmetry in the global economy, which ultimately led to the geopolitical domination of Europe and the USA over Africa and Asia (Findlay, O'Rourke, 2007, p. 364). With the adoption of the Lisbon Treaty, the European Union has taken a step towards playing a significant role in trade, environment and social issues (Van Langenhove & Marchesi, 2009; Rudloff & Laurer, 2017). The aim of this work is to present the main challenges and changes taking place in transatlantic relations between the EU and the USA in the second and third decades of the 21st century. To achieve this goal, the descriptive method was applied.

The reforms carried out by the EU allowed it to act in the spectrum of international affairs. The conflict between Russia and Ukraine (in 2014 and 2022) showed that the EU is increasingly resorting to sanctions and conditionality instruments to promote its interests. In addition, the EU aims to create a common army. Despite the fact that these changes contribute to the increase of the EU's competitiveness in the world, US relations between the EU are extremely durable, and the transatlantic community is repairing mutual relations relatively quickly. Meanwhile, the EU's relations with China, the largest trading partner in 2021 (Eurostat, 2022), are confrontational.

              Despite improvement in transatlantic relations, the earlier lack of communication led to a lack of confidence in the US on the part of Europeans. Relations between the US and the EU in the third decade of the 21st century remain tense – it is worth mentioning the AUKUS defense pact (agreement between Australia, Great Britain and the United States) on the exchange of defense technologies in this respect (Borges de Castro and Ricardo, 2021; Morcos 2021 ). It resulted in deterioration of relations between Paris and the US to such an extent that they were close to breaking. At the same time, at the beginning of the third decade of the 21st century, transatlantic relations sought stabilization. President Biden's administration has reaffirmed its commitment to alliances with European countries. In addition, the US returned to the Paris Agreement (United States Department of State, 2021) and rejoined the World Health Organization (WHO) (Keaten, 2021).
Nanotechnology in agriculture: A review of innovative utilization
Authors: Zamri Nur Balqis
Published: February 2024

The escalating challenges posed by swift population growth, global climate change, and occurrences of disease outbreaks to ensure food security necessitate innovate agricultural improvement techniques. In this intricate milieu, nanotechnology, with its remarkable advancements, emerges as a potent avenue for enhancing sustainable agricultural practices. This review underscores the current landscape of nanotechnology in agriculture, highlighting the classification and synthesis of nanomaterials. Furthermore, insightful applications of nano-based products in agriculture are meticulously elucidated in term of advantages and risks possessed. Notably, the regulatory frameworks from different countries have been addressed to ensure the safety of consumers and the environment. However, despite its myriad benefits, nanotechnology is not exempt from limitations and potential negative consequences, which are explored in the final section of this review. Keywords: nanomaterials, agriculture, nano-based products, regulatory frameworks
APPLICATIONS OF NATURAL ESTERS ALTERNATIVE TO MINERAL OILS IN POWER TRANSFORMERS
Authors: Düzkaya Hıdır
Published: February 2024

The electrical and environmental disadvantages of mineral oils, traditionally used as insulating fluids in power systems, lead to the search for alternatives. Natural esters produced from vegetable seeds are one of the most important alternatives. Natural esters with high dielectric strength can meet ultra-high voltage transformer design requirements. In addition, they can respond to environmental concerns caused by transformer oils with their biodegradability. This study first compares natural esters with other trans-former oils and explains why natural esters stand out. The basic properties of natural esters are defined in terms of advantages and disadvantages, and power system applications are exemplified. Esterification and synthesis of nanoparticle-added nanofluids, widely used in the literature to improve natural esters' electrical and thermal properties, are presented with experimental applications. Natural esters can have a better oxidation stability with the esterification process. The AC, DC, and lightning impulse (LI) break-down voltages of nanofluids based on natural esters also enhanced by 10% on average. This substation and experimental applications in which natural esters are used show that these environmentally friendly oils can provide insulation requirements in many power system equipment, especially transformers.
Triple-band stub loaded patch antenna with high gain for 5G Sub-6 GHz, WLAN and WiMAX applications using DGS
Authors: Kumar Lalit , Nath Vandana , Reddy Bvr
Published: February 2024

Microstrip antennas have become ubiquitous in today's wireless communication
world due to their low profile, low cost, and simplicity in fabricating on
circuit boards. However, poor performance characteristics, such as limited
bandwidth, low power handling capabilities, and low gain, limit their
applicability in various instances. Path loss will be substantial in 5th
generation (5G) wireless communication due to the utilization of
high-frequency bands. A high-gain antenna with a small size is necessary to
address this issue. A compact tri-band, slotted monopole antenna with high
and consistent gain employing a defected ground plane structure (DGS) has
been investigated and implemented in this study. This proposed antenna uses
three inverted L-shaped stubs connected to the radiating element to cover
the desired bands while keeping the antenna size small. The designed antenna
has two key characteristics: (i) wide bandwidth and (ii) reasonable gain.
The antenna covers 2.45 and 5.6 GHz WLAN, 2.4 GHz Wi-Fi, 2.5 and 5.2 GHz
WiMAX and 3.7 GHz Sub-6 GHz of 5G for mobile communication. The overall
substrate size of the antenna is 30 ? 17 ? 1.6 mm3and the electrical
dimensions are 0.49 ?L ? 0.28 ?L ? 0.026 ?L, where ?L is the free space
wavelength at 2.45 GHz. The measured reflection coefficient (S11 < -10dB)
covers 2.4 - 2.52 GHz (bandwidth 112 MHz) and 3.4 - 4.1 GHz (bandwidth 700
MHz) and 5.2 - 6.6 GHz (bandwidth 1359 MHz) with a fractional bandwidth of
5.1 % at lower frequency band, 18.6 % at mid frequency band and 23.7 % at
high frequency band. A prototype antenna has also been developed using an
inexpensive, low-profile 1.6 mm thick FR-4 (?r = 4.4) substrate. The
measured peak gains achieved are 1.35 dB at 2.45 GHz, 2.55 dB at 2.65 GHz
and 3.8 dB at 5.5 GHz. The simulated results have been validated against
actual experimental measurements, and the outcomes are consistent and match
with certainty. The proposed antenna design is very compact and easy to
fabricate due to the absence of vias.
Speech and language therapy for children with phonotrauma
Authors: Petrovic-Lazic Mirjana , Jovanovic-Simic Nadica , Veljkovic Zorica
Published: February 2024

Introduction. Proper voice production requires coordinated, synchronous and
efficient functioning of the larynx, respiratory, resonance and
articulation mechanisms. Phonotrauma is trauma to the laryngeal mechanism
and includes any behavior that results in injury to the vocal folds. The aim
of this research was to identify and describe the characteristics of voice
disorders in children that occur as a result of phonotrauma, approach?es
and techniques in speech and language therapy of these speech disorders, and
the effects of their application. The characteristics of phonotrauma in
children reflect the characteristics of hyperfunctional voice disorders, as
they usually arise as a result of voice abuse. Speech and language therapy
of children with phonotrauma includes identification and reduction, i.e.
elimination of the vocal behavior that had caused the voice disorder. In
addition, treatment focuses on a vocal hygiene program and the use of
various direct treatment techniques to achieve appropriate voice production.
Effects of applying direct and indirect treatment techniques is
demonstrated by the reduction of the size of the lesion, the degree of
dysphonia and voice disorders, hoarseness, breathiness in the voice, the
absence of recurrence, and the achievement of optimal values of the acoustic
parameters of the voice. Conclusion. In most cases, children can master the
correct way of producing speech after a short period of speech and language
therapy. However, in order to achieve this goal, it is necessary to actively
involve children, their parents, and other people from the immediate and
wider social environment.
Correlation of the Dutch Lipid Clinic Network score as a diagnostic tool and lipid parameters in patients with familial hypercholesterolemia
Authors: Krstic Milica , Singh-Lukac Sandra , Petakov Ana , Mitrovic Marija , Misevic Vojko , Lalic Katarina
Published: February 2024

Introduction. Familial hypercholesterolemia is a congenital disorder of lipid
metabolism. The Dutch Lipid Clinic Network score is used for early diagnosis
of familial hypercholesterolemia. The aim of the study was to examine
correlation between the above score and the first measured lipid values in
patients who had not used lipid-lowering therapy. Material and Methods. 390
patients identified as familial hypercholesterolemia+ (n=247) and familial
hypercholesterolemia-(n=143) according to the Dutch Lipid Clinic Network
score. Family and personal history, physical examination, demographic and
anthropometric characteristics and lipid status were analyzed. Results. The
familial hypercholesterolemia+group had all Dutch Lipid Clinic Network
score components significantly higher than the familial
hyper?cholesterolemia-group. The highest average number of points in
familial hypercholesterolemia+ group carries low-density lipoprotein level
and family history data. Significantly higher levels of total cholesterol,
low-density lipoprotein and apolipoprotein B were found in the familial
hypercholesterolemia+ group, while high-density lipo?protein was lower in
the familial hypercholesterolemia-group. The Dutch Lipid Clinic Network
score correlates best with level of low-density lipoprotein and
apolipoprotein B (p<0.001). The cut-off point for low-density lipoprotein is
4.9 mmol/L (sensitivity 56%; specificity 8%), while the cut-off point for
apolipoprotein B is 1.52 g/L (sensitivity 42%; specificity 12.5%) for
diagnosis of familial hypercholesterolemia. Conclusion. Low-density
lipoprotein and apolipoprotein B values significantly correlate with Dutch
Lipid Clinic Network score values. Elevated values of low-density
lipoprotein (>4.9 mmol/L) significantly affect the total value of the Dutch
Lipid Clinic Network score and are considered components that carry large
number of points for the diagnosis of familial hypercholesterolemia.
Cancer-associated stroke in a patient with testicular cancer - case report
Authors: Jovicevic Masa , Jovicevic Predrag , Zivanovic Zeljko , Boskovic Ksenija , Popovic Maja , Popovic Lazar
Published: February 2024

Introduction. Cerebral venous thrombosis is a rare cerebrovascular disease
that affects about 5 in 1 million people each year and accounts for 0.5% of
all strokes. There is significant overlap of many risk factors for cerebral
venous thrombosis and venous thromboembolism: cancer, obesity, genetic
thrombophilia, trauma, infection, and prior neurosurgery. Testicular cancer
is a malignant tumor found in testicular cells and it is generally called
testicular germ cell tumor. This case report puts emphasis on the importance
of recognizing cerebral venous thrombosis as one of the cancer-associated
symptoms that can help set the appropriate diagnosis, which, however, is
not very common for this type of disease. Case report. A 58-year-old patient
has been examined many times due to recurrent strokes. Lumbar puncture,
computed tomography scan, magnetic resonance imaging, magnetic resonance
angiography, magnetic resonance venography, immunoserology and
electroencephalography have been performed. Apart from the vascular changes
in the brain blood vessels, the cause of the stroke was not clear.
Further?more, the patient was examined by a hematologist and an urologist.
Laboratory testing showed increased levels of alpha fetoprotein and
beta-human chorionic gonadotropin, however, no tumor was found in the
suspected testis. Eventually, the patient underwent retroperitoneal lymph
mass percutaneous core biopsy procedure and was diagnosed with non-seminoma
germ cell tumor - Yolk sac tumor. Conclusion. Patients with cerebral venous
thrombosis require multidisciplinary approach for the appropriate
diagnosis.