bluuebunny/crossref_metadata_2025 huggingface dataset:
Social Capital and Corporate Social Responsibility: Pathways to the Sustainability of Community Enterprises in Chumphon Province
Authors: Boonnual Chutimant , Boonnual Tawat
Published: January 2024

Purpose: In this research, the objective is to study the impact of social responsibility and social capital on the sustainability of community enterprises.
 
Theoretical Framework: Community enterprises play a crucial role in promoting sustainable growth at the community level by creating economic opportunities, fostering social equality, and ensuring environmental sustainability. In the context of community enterprises, social capital and corporate social responsibility can lead to the enhancement of community problem-solving capabilities, the achievement of community objectives, and the sustainability of both the community enterprise and the community as a whole.
 
Design/Methodology/Approach: A quantitative approach was employed. The sample group used for the study consists of 200 members of community enterprises in Chumphon province. The instrument used for the study is a questionnaire, adapted from previous academic research, which has undergone content validity and reliability tests with a Cronbach's alpha coefficient of 0.85. Data analysis was conducted using structural equation modeling statistics.
 
Findings: Studies have found that social costs are positively correlated with both corporate social responsibility activities and balanced operational outcomes, while no relationship was found between social responsibility and balanced performance outcomes.
 
Research Practical and Social Implication: The study clearly demonstrates that social capital is a crucial factor for the sustainable operation of community enterprises.
 
Originality/Value: Social responsibility and social capital have great impact on the sustainability of community enterprises, therefore, potential and successful community enterprises must equip with social capital and responsibility.
Determinants of Performance of Village-Owned Enterprises in Improving Village Development Performance
Authors: Somiartha Putu , Utama I Made Suyana , Sudibia I Ketut , Dewi Made Heny Urmila
Published: January 2024

Purpose: The main objective of this paper is to analyze the factors that influence the performance of Village-owned Enterprises and village development performance in Lombok Utara Regency and Analyze the role of social capital polong renten in moderating the influence of manager competence on the performance of Village-owned Enterprisesin Lombok Utara Regency.
 
Theoretical Framework: Explains the context of sustainable development as development that is oriented towards meeting human needs through the wise. Competency is the ability to carry or carry out a job or task that is based on skills and knowledge and is supported by the work attitude required by the job. Village-owned Enterprises is an institution established by the village government to improve the village economy. social capital is a resource inherent in social relationships. Individuals involved in social relationships can use these social resources for personal and group interests.
 
Design/Methodology/Approach: The study is quantitative associative and this research was conducted in 43 villages in Lombok Utara Regency. With the number of samples used as many as 215 people in 43 Village-owned Enterprises. Data analysis used the SEM-PLS method.
 
Findings: The results of the study found the role of the government, management competence, utilization of information and communication technology, and social capital of Polong Renten have a significant positive effect both in installment and indirectly on the performance of Village-owned Enterprisesand the performance of village development.
 
Research, Practical & Social Implications: Polong renten's social capital significantly moderated the influence of the manager competency variable on the performance of Village-owned Enterprisesin Lombok Utara Regency. novelty in research obtained results and illustrated there is a factor of polong renten social capital, which has an influence and moderation of influence between variables that impact the performance of Village-owned Enterprisesand village development performance.
 
Originality/Value: In addition, it further emphasizes the moderation effect of social capital in other forms, whether it can strengthen or weaken the influence relationship between variables estimated to affect the performance of Village-owned Enterprisesand village development performance.
Methodology for Assessing Procurement Systems: the Case of Public Procurement Bid Disputes Management in KenyaP.
Authors: Nyathore Paul Mathenge , Wainaina Gituro , Awino Zachary Bolo , Kariuki James Thuo
Published: January 2024

Purpose: This study sought to assess the efficacy of bid disputes management mechanism in Kenya.
 
Theoretical Framework: Transparency in public procurement proceedings is a concern for most stakeholders. Allowing aggrieved bidders to challenge decisions of procuring entities is considered a critical development in the space of public procurement. The effectiveness and efficiency of bid disputes management mechanism should therefore be a concern for procuring entities, bidders, and development partners especially. This aspect is yet to be explored extensively in Africa.
 
Design/Methodology/Approach: The Methodology for Assessing Procurement Systems (MAPS) as propagated by the Organisation for Economic Co-operation and Development (OECD) helps evaluate the quality of public procurement systems and subsequently strategize on necessary reforms. This study applied MAPS to assess the efficacy of the bid disputes management mechanism in Kenya.
 
Findings: It was established that overall, the public procurement bid dispute management mechanism in Kenya was effective and efficient. However, shortcomings were noted concerning resourcing of Public Procurement Administrative Review Board (PPARB), unaffordable filing fees and accessibility of comprehensive, simple, and clear information on filing procedures.
 
Research, Practical and Social Implications: The findings of this study offer policy recommendations that will help promote effective and efficient management of public procurement bid disputes.
 
Originality/Value: The results of this study contribute to theory, practice and literature in the field of public procurement which is less researched in the Eastern Africa Region. The findings of the study can be replicated in countries that have based their procurement reforms on the United Nations Commission on International Trade Law (UNCITRAL) Model Law on Public Procurement. It is to be appreciated that application of MAPS indicators allows for subjective judgments by the assessor.
The Vale of Belvoir, NW Tasmania – overview of geology, geomorphology, vegetation and human history
Authors: Corbett KD , Corbett Elizabeth
Published: January 2024

The Vale of Belvoir is a large open grassy valley of striking appearance located northwest of Cradle Mountain. At 800 m altitude, it is Tasmania’s only subalpine limestone valley. The unusual geology and human history have combined to give the valley its unique character. The three main geological elements are: the folded Ordovician limestone bedrock, which produced the synclinal valley and numerous sink holes; lava flows of Cenozoic basalt, which have covered parts of the valley floor; and Pleistocene glaciations, which have delivered large amounts of bouldery till to mantle much of the valley floor and redistribute much of the basalt into the glacial deposits to add to the fertility of the soils. The glacial deposits have disrupted the drainage of the valley, so that the Lea River and Lake Lea now drain northwards out of the valley, while the Vale River drains most of the valley and flows southwards to the Pieman system. Dolerite erratics in the glacials indicate that the ice came from the Cradle Mountain area.
The Vale has one of the most extensive and diverse areas of montane grassland in the state and contains several threatened vegetation communities and plant species. The valley provided Tasmanian Aboriginal people with abundant wildlife and shelter, and their burning practices maintained its grassy nature and remnant patches of rainforest. Europeans arrived in the 1820s and grazed cattle from the 1850s onwards; their practice of patch burning the grasslands has been continued by the current owners, the Tasmanian Land Conservancy.
Attrition of bush trees after suburban development in Hobart, Australia
Authors: Sobowale Abiodun Tolulope , Kirkpatrick James
Published: January 2024

The patterns and correlates of native tree loss after suburbs are built in forest and woodland are poorly known yet can be important for nature conservation and scenic amenity. We use Hobart, Tasmania, Australia, to determine the rate of such tree loss and the factors that relate to this. Twenty suburbs in Hobart that had transitioned from native vegetation to suburbs between 1946 and 2021 were randomly sampled. Ten cadastral parcels that were native forest or woodland in 1946 were randomly selected from each suburb. Data on tree and housing density for years 1946, 1971, 1996 and 2021 were obtained from stereoscopic aerial photographs. Correlation and multiple regression were used to analyse the relationships between tree loss rates and house numbers, mean block size, biophysical variables, and sociodemographic variables. The mean annual percentage loss of trees between 1946 and 2021 was 1.03%, while data on tree decline after houses were built indicated a mean annual percentage loss of 0.18%. Loss between 1946 and 2021 at the suburb scale was predicted by a multiple regression model that constituted number of houses in 1996, mean household income and mean number of people per household. This model reflected the surge of tree removal with house building, the tendency of people with high income to have trees in their gardens and the tendency for new suburbs to be occupied by young families to a greater degree than old suburbs. The rate of original tree loss after house construction is low, but points to a need to provide a steady stream of substitute trees.
ANALÍSE GEOQUÍMICA DE SEDIMENTOS DE UMA MICROBACIA URBANA NA REGIÃO AMAZÔNICA
Authors: Costa Igor , Nascimento Thiago Shinaigger Rocha , Batista Louisiane Farias , Correa Edinelson Saldanha , Monte Christiane do Nascimento
Published: January 2024

A microbacia do igarapé do Irurá pertence a bacia hidrográfica do Rio Tapajós, e  está localizada na cidade de Santarém- PA, no Oeste do Pará. A cidade, não possui uma rede de saneamento básico adequado, que faz com que boa parte do esgoto doméstico e industrial seja lançado in natura, em igarapés e no rio Tapajós, afetando diretamente as condições da biota aquática, como o pescado, que é parte da dieta alimentar e renda da região. O objetivo desta pesquisa foi a caracterização geoquímica dos sedimentos superficiais da microbacia do igarapé do Irurá. As coletas de sedimentos foram realizadas em cinco pontos amostrais, desde a nascente do igarapé Irurá até próximo à foz, entre os anos de 2020 e 2021. Foram mensurados parâmetros físico-químicos, como: pH em Água e em cloreto de Potássio (KCl), acidez potencial, capacidade de troca de cátions (CTC), soma de bases (SB), saturação em bases (V), matéria orgânica (M.O), sulfato, fósforo total (PT), metais (Al,Cr, Cu, Fe, , Mn e Zn). Foi aplicado o teste estatístico de Análise de Principal de Componente (APC). Os resultados mostraram que a textura do sedimento foi caracterizada por arenosa, além disso, as concentrações dos contaminantes foram maiores na estação seca. A APC mostrou correlações diferentes entre seca e chuva, o que pode estar relacionado à sazonalidade. As maiores concentrações de contaminantes na estação seca, indica que pode ter uma transferência dos contaminantes para a coluna d’água, devido aos processos naturais de ressuspensão do sedimento, o que aumenta o risco para biota aquática. Diante disso, é necessário que ampliem os estudos sobre a contaminação de recursos aquáticos amazônicos, principalmente, em áreas urbanas, onde a taxa de degradação dos recursos hídricos é mais rápida.
CHECK-LIST OF BIRD SPECIES FROM PIAUÍ STATE, BRAZIL
Authors: Santos Suely silva , Dos Santos Tatiane Freitas , De Araújo Gomes Irene Suelen , Pereira Ocivana Araújo , Nascimento Muryllo dos Santos , Siqueira Airton Janes da Silva , Vieira Santos Francisco das Chagas , Dos Santos Iasmin Martins Elias Lera , Carneiro Pedro Bastos de Macedo , Guzzi Anderson
Published: January 2024

Piauí is inserted between two important biomes, the Cerrado and the Caatinga. The transition areas, demonstrate unique characteristics and derived from adjacent biomes, thus presenting a high number of species of different types of habitats. Studies that have specific data on the occurrence of species are essential for the knowledge and conservation of the biodiversity of a region. The article aims to present the species of birds recorded in the state of Piauí, analysing the conservation status of the species. For this survey a systematic review is being used through indexers such as Google Scholar, Scielo and virtual libraries of Higher Education Institutions. A single table with all the species found in the surveys and maps was made to help visualize the municipalities that have scientific publications. The state of Piauí has 224 municipalities, of these only 35 have a survey of the avifauna with 143 publications between 1982 and 2022, which recorded 487 species of birds in the territory of Piauí. Of these records 36 species (7.4%) are classified with some degree of threat according to the IUCN and MMA. The studies are concentrated in the north and south, with few studies in the center of the state. Analyzing the map of the state of Piauí it was possible to observe that the Conservation Units are also concentrated in the northern and southern regions of the state. Thus, most of the studies were carried out in Conservation Units, and the surveys found outside Conservation Units are within Priority Areas for Conservation.
Efeito da sílica atmosférica por atividade mineradora sobre plantas e saúde renal em seres humanos
Authors: Lorenzini Mariana Simonato , Baptista João Pedro Ribeiro , Gaertner Maria Helena Naumann , Lima Helbert do Nascimento , Melo Júnior João Carlos Ferreira
Published: January 2024

Este estudo objetivou demonstrar as injúrias morfológicas e fisiológicas e provocadas pela poluição atmosférica por sílica em plantas e correlacionar com a presença de níveis elevados de sílica na urina de seres humanos em área de mineração de rocha. Trata-se de um estudo transversal, observacional e analítico que analisou a espécie de planta Piper gaudichaudianum e 51 amostras de urina de pessoas de dois pontos amostrais (poluído e controle). Os atributos funcionais foliares foram comparados por teste T e registrados em MEV para análise do material particulado na folha. A sílica na urina foi verificada pela razão da dosagem de sílica em amostra simples de urina por meio de ICP-OES e creatinina urinária por método colorimétrico. Verificou-se uma maior concentração de material particulado sobre a superfície foliar de P. gaudichaudianum na população amostral da zona poluída em relação à zona de controle. A massa fresca, massa seca, os teores de clorofila a, b e clorofila total foram menores nas folhas das zonas poluídas em relação àquelas da zona controle. Já em relação a mediana da excreção urinária de sílica, não se identificou diferença significativa entre as pessoas moradoras da área poluída ou controle. Embora houve uma associação entre moradores da zona poluída apresentarem menor chance de um valor de sílica na urina acima da mediana da amostra (≥3,91mg/g). Tal associação não foi significativa após ajuste para idade. Apesar da sílica afetar negativamente o desenvolvimento foliar da espécie monitora, tais achados não foram associados a uma maior presença de sílica urinária das pessoas residentes na área de maior contaminação ambiental. Fatores de contaminação amostral e dietético podem ter influenciado tais achados na amostra humana estudada, reforçando a importância da análise da flora.
bioética y sus desafíos en la educación de profesionales de salud
Authors: Rodríguez Ramírez Jesús Miguel
Published: January 2024

El presente artículo pretende plantear el papel de la bioética en la reflexión de la moral y la ética actuales, para llegar a cierta reflexión sobre la posibilidad de una educación en la bioética y los problemas que enfrenta. Para tal efecto, se considera importante ofrecer una descripción general de lo que es la ética, distinguiéndola de la moral para, posteriormente, describir lo que es propiamente la bioética, de modo que se establezca una relación entre ambas. Después se plantean los principios básicos de la bioética: autonomía, no maleficencia, beneficencia, utilidad y justicia. Finalmente, se verá la problemática que implica la educación en ética, y lo que conlleva a la problematicidad de una educación en bioética.
inteligencia artificial: ¿aliada o amenaza en la evaluación educativa?
Authors: Rincón Macías Mónica Andrea
Published: January 2024

En el presente artículo, se aborda la temática de la inteligencia artificial (IA) y su influencia en el ámbito de la evaluación educativa, planteando el interrogante sobre cómo lograr que la IA se posicione como un aliado y no como una amenaza en este contexto. Para tal propósito, se inicia presentando una definición precisa de IA y se realiza una exploración de los factores determinantes que han contribuido a su desarrollo. A medida que se ubica la reflexión en el ámbito de la educación superior, se revisa cómo la IA se integra en este entorno, resaltando tanto sus ventajas como los desafíos inherentes, respaldados por casos concretos que ejemplifican sus posibilidades y limitaciones. Posteriormente, se profundiza en el ámbito de la evaluación educativa, identificándose como una herramienta fundamental para el progreso de los estudiantes, presentando experiencias sobre la forma cómo la inteligencia artificial se está aplicando en la evaluación educativa. Dentro de este contexto, se subraya el cambio en el rol del estudiante en las metodologías activas, donde se convierte en el epicentro del proceso de aprendizaje. Este cambio paradigmático plantea la necesidad de un acompañamiento y una retroalimentación más efectiva por parte del cuerpo profesoral.
Factors Affecting Nutritional Status (Height for Age) of Children Under Five in Rote Ndao District, Kupang, Nusa Tenggara Timur, Indonesia
Authors: Picauly Intje , Boeky Daniela , Oematan Grouse
Published: January 2024

Background: Nusa Tenggara Timur (NTT) Province has many problems related to nutritional intake and public health. Pregnant women and children under five are groups of people who are very vulnerable to this problem. Many government programs have been implemented but to date there are still high maternal and infant mortality rates as well as high problems of malnutrition and stunting. This study aimed to determine what factors influence the nutritional status of toddlers in Rote Ndao Regency.
Subjects and Method: This was a cross-sectional study conducted in Rote Ndao Regency, Kupang, NTT, Indonesia, from August to November 2023. A total of 43 mothers who had children aged 12-59 months were selected for this study. The dependent variable was nutritional status (height for age/ HAZ). The independent variables were maternal knowledge on nutrition and stunting, history of infectious diseases, and local-food-based supplementary feeding. Supplementary feeding was measured using food frequency questionnaire (FFQ). Nutritional status was measured by height for age. The data were analyzed using a multiple linear regression.
Results: Maternal nutritional knowledge (b= 0.37; 95% CI = 0.23 to 0.50; p = 0.001), no history of infection (b= 0.98; 95% CI= 0.72 to 1.24; p= 0.001), and local-food-based supplementary feeding (b= 1.33; 95% CI= 0.71 to 1.96; p= 0.001) positively and significantly increased nutritional status (height for age) in children under five.
Conclusion: Maternal nutritional knowledge, no history of infection, and local-food-based suplementary feeding positively and significantly increase nutritional status (height for age) in children under five.
Keywords: supplementary feeding, nutritional status, maternal knowledge, stunting
Correspondence: Intje Picauly. Study Program of Public Health, Faculty of Public Health, Universitas Nusa Cendana, Kupang 85111, Nusa Tenggara Timur, Indonesia. Email: intjepicauly@staf.undana.ac.id. Mobile: +6282237145517.
Improved Monitoring of Early-Warning Signs of an AMOC Collapse
Authors: Reschenhofer Erhard
Published: January 2024

This paper reviews a recent study predicting that the Atlantic Meridional Overturning Current circulation may collapse in the middle of this century and concludes that there are too many uncertainties to allow a reliable prediction. Even if the model used in that study is fairly adequate, its predictions depend heavily on the quality of the involved approximations, the choice of the circulation proxy, the method of trend estimation, the size of the rolling window used for the estimation of the second moments, the determination of the start time of ramping, etc. Forced to set lower targets, the focus is consequently shifted to the improved detection of early-warning signs like an increase in variance and autocorrelation. Two new estimation procedures are introduced. The first concerns the estimation of the trend and includes a new criterion for comparing the quality of different estimates. The second is a procedure for detecting changes in the first-order autocorrelation without any delay caused by an estimation window. The results obtained with these methods suggest that the autocorrelation increases erratically rather than steadily which would make forecasting based on extrapolation impossible.
Estimation of Optimal Lock-Down and Vaccination Rate of a Stochastic SIR Model: A Mathematical Approach
Authors: Pramanik Paramahansa
Published: January 2024

This paper utilizes a stochastic Susceptible-Infected-recovered (SIR) model with a nonlinear incidence rate to estimate the optimal lock-down intensity and vaccination rate under the COVID-19 pandemic environment. We use a Feynman-type path integral control approach to determine a Fokker-Plank type equation of this system. Since we assume the availability of information on the COVID-19 pandemic is complete and perfect, we show the existence of a unique fixed point. A non-linear incidence rate is used because, it can be raised from saturation effects that if the proportion of infected agents is very high so that exposure to the pandemic is inevitable, then the transmission rate responds slower than linearity to the increase in the number of infections. The simulation study shows that with higher diffusion coefficients susceptible and recovery curves keep the downward trends while the infection curve becomes ergodic. Finally, we perform a data analysis using UK data at the beginning of 2021 and compare it with our theoretical results.
DIVIDING THE ARCTIC. ON THE ISSUE OF THE RUSSIAN ARCTIC BOUNDARIES
Authors:   Saint Petersburg State University, Gomelauri Angelina S.
Published: January 2024

The reconfiguration of the international arena that is taking place at the moment cannot be characterized other than as a time of crises and sudden changes. It seems quite obvious that in the conditions of international tension, any division of states into “friendly” and “unfriendly”, accompanied by the mutual imposition of sanctions, by the growing desire of countries to realize their national interests, including the military methods, the most vulnerable points of intersection of geopolitical interests are under threat. For Russia, one of them is the Arctic, a region of high resource, industrial and infrastructural potential. Meanwhile, despite the importance of the Arctic for the state and the long history of exploration of the territory, the borders of the Russian Arctic space have not been clearly defined yet, which makes it possible to increase political pressure from unfriendly states and international organizations. Having ratified the UN Convention on the Law of the Sea in 1997, the Russian Federation undertook obligations to act in accordance with the established procedure in case of territorial claims to water and underwater spaces. Consequently, asserting its rights to the Lomonosov Ridge and other objects that are the extensions of the continental shelf, in 2001 the Russian Federation filed an application to the UN Commission on the Limits of the Continental Shelf. Currently, the procedure is still incomplete, although Russia in February 2023 received the recommendations of the Commission, which has recognized a significant part of the state’s territorial claims. However, the contemporary conditions are such that any further efforts to delimit the spaces with the Arctic states, which have overlapping interests with Russia, are fraught with the aggravation of the situation in the international arena and unconstructive co-operation in general.
Interés y aptitud vocacional como predictores del rendimiento académico universitario
Authors: Paz Pérez Daniel Eduardo , Rodríguez-Alberto Marcelo
Published: January 2024

La elección de una carrera profesional es una decisión trascendente; no obstante, el éxito en la universidad depende de factores como la educación previa, la carrera elegida, la familia, el contexto socioeconómico, así como las habilidades, intereses y aptitudes. En un trabajo transversal y descriptivo se buscó encontrar la relación entre el interés y la aptitud mostrados por los alumnos de nuevo ingreso universitario -mediante un test vocacional auto aplicado- y su rendimiento académico y logro educativo, en un estudio exclusivo para la carrera de Ingeniería en Gestión Empresarial. Se propuso un perfil (omega) que explicase el rendimiento, a partir de los resultados del test CHASIDE (basado en el SDS de Holland) pata las ciencias contables y administrativas y un perfil alterno (omegaa) para las ciencias ingeniería; los resultados validan el perfil (omega), apreciando débilmente el interés y la aptitud con el rendimiento (r=.260, sig=0.045) más no con el logro académico; el perfil alterno (omegaa) no mostró asociación alguna con las variables estudiadas. Se propone continuar su aplicación y estudio con otras carreras tecnológicas.
Crecimiento postraumático, resiliencia, optimismo y gratitud entre deudos y no deudos por COVID-19
Authors: Quezada Berumen Lucía
Published: January 2024

El objetivo del presente estudio consistió en comparar el crecimiento postraumático (PTG), resiliencia, el optimismo y la gratitud entre: deudos por COVID-19, deudos por otras causas y personas que no experimentaron la pérdida de un ser querido (no deudos) durante la pandemia. Se trató de un estudio cuantitativo, transversal y comparativo donde se contó con una muestra no probabilística de 373 mujeres y hombres de población general de México. Los resultados indicaron que las personas que no experimentaron la pérdida de un ser querido obtuvieron puntajes superiores de resiliencia, optimismo y gratitud, sin embargo, los deudos por COVID-19 fueron quienes obtuvieron los mayores puntajes de PTG; los deudos por otras causas fueron el grupo con menores puntajes en todas las variables de estudio. Las personas que perdieron a un ser querido por causas no relacionada directamente a COVID-19, fueron quienes se encuentran en mayor vulnerabilidad, por lo que la atención a estos deudos, debe ser clave para fomentar su bienestar.
Causa, autonomía de la voluntad y principio de individuación
Authors: Rodríguez Puentes Marcos
Published: January 2024

El concepto de causa contractual ha sido inadecuadamente abordado desde Domat, generándose un estado de ininteligibilidad y de posiciones doctrinales que defienden que la causa es irrelevante, excluyéndola del pensamiento jurídico, o que es lo único relevante, con la que se justifican niveles excesivos de intervención en el mercado. Este trabajo busca incorporar en la discusión jurídica elementos psicológicos que orienten la comprensión de dicho concepto, su relación con la autonomía de la voluntad como categoría jurídica y, en consecuencia, el tipo de intervención estatal adecuado. A partir de las ideas de Joaquín Dualde, sostengo que el consentimiento es la causa de los contratos, y que el interés del derecho debe orientarse a las causas del consentimiento, esto es, a los elementos y eventos que configuran esa voluntad cuya manifestación perfecciona el contrato. Se analizan los elementos irracionales en esta configuración, y finalmente se estudia, a partir del Enfoque Humanista de la psicología y del principio de individuación propuesto por Carl Jung, la posibilidad de fortalecer la libertad efectiva de los sujetos jurídicos.
A Review on Vehicle To Vehicle Communication Using BlockChain
Authors: OKUL Şükrü , KELEŞ Fatih , AYDIN Muhammed Ali
Published: January 2024

In this study, there are theoretical information about security in communication between block chain and vehicles. When talking about block chain, its types, features and content are mentioned. In the light of all this theoretical information, the studies made using block chain in inter-vehicle communication are examined. In addition, information about the methods used and their contents related to these studies are given. The theoretical background of this information is explained under general headings. In addition, the methods used by the studies examined are also categorized and explained together with the studies. In the study, first of all, detailed information is given about the block chain as stated. Afterwards, VANET (Vehicles Ad-hoc Network) security is mentioned. Afterwards, the studies in the literature are explained, and finally, future studies are mentioned in the conclusion section.
Lityum Hava Pillerinde Kullanılan Grafen Elektrotlar
Authors: KILINÇ Özge , TOPLAN Nil
Published: January 2024

Grafen; karbon atomunun altıgen şeklinde bulunduğu, dünyadaki tek iki boyutlu malzemedir. Sahip olduğu üstün özellikleri sebebiyle farklı alanlarda kullanılabildiği için birçok çalışmaya konu olmuştur. Günümüzde teknolojik öneme sahip araştırma konularından biri de enerji üretimi ve enerjinin depolanmasıdır. Bu çalışmalarda ana hedef; verimli, ucuz enerji üretimini ve enerjinin depolanmasını sağlamaktır. Teknolojinin hızlı ilerlemesiyle, uzun ömürlü, yüksek güç yoğunluğuna ve küçük boyuta sahip pil geliştirme çalışmaları önemli bir konu olmuştur. Lityum hava pili, diğer pillere kıyasla daha fazla enerji depolayabilen sistemlerdir. Bu pillerde daha fazla enerji depolanabilmesinin nedeni, diğer pil sistemlerine göre daha hafif katot malzemesi kullanılmasıdır. Lityum hava pilinde oksijen geçişini sağlamak için katot olarak gözenekli karbon kullanılmaktadır. Karbon esaslı malzemelerden olan grafen, üstün özellikleri sayesinde lityum-hava pillerinde elektrot olarak tercih edilmektedir. Bu makale grafen yapısının özellikleri, grafenin üretim yöntemleri, bu yöntemlerin kıyaslaması ve potansiyel uygulama alanları konusundaki araştırmaları kapsamaktadır. Ayrıca pillerin tarihsel gelişimi, mevcut lityum-hava pil teknolojileri ve Li-hava pillerinde yeni nesil grafen esaslı elektrotların kullanımı konuları incelenmiştir.
A New Hybrid Record for The Vascular Flora of Türkiye: Fagus x taurica Popl.
Authors: GÜNEŞ ÖZKAN Neval , BİRTÜRK Turgay , AKSOY Necmi , AYTEĞİN Ahmet
Published: January 2024

The presence of Fagus x taurica Popl., a hybrid of two Fagus L. taxa known to be naturally distributed in Türkiye, has been detected in the natural deciduous-mixed forests of Bolu. Specimens were collected from Kökez Old Growth Fir Forest Nature Reserve Area, Bolu Kale Fındığı Nature Reserve Area, and Yedigöller National Park in Bolu province, northwest Türkiye. After the identification, specimens were compared with materials in the international herbaria. As a result of the examinations, the morphological features seen to be different from its parents are as follows: Young shoots are grayish-green in color, leaves have 7-13 pairs of lateral veins, are ovate or obovate, and their margins are dentate, and the cupula scales are subulate. It resembles F. orientalis Lipsky in terms of leaf characteristics and F. sylvatica L. in terms of cupula characteristics. In this article, a botanical description of the taxon, differences from the main species, distribution maps, and photos are given. Fagus x taurica is a new hybrid record for the vascular flora of Türkiye. With this new record, the number of Fagus sp. taxa in the flora of Türkiye has risen to 3.
The evolutionary development of sharing economy
Authors: Popov Evgeny , Veretennikova Anna , Mokrushnikova Anna
Published: January 2024

Sharing economy as well as consumption and resource use models associated with it are forms of interaction between economic agents that involve the application of digital technologies. At the same time, sharing economy goes through several development stages, which determine the specifics of its implementation and penetration. The purpose of the paper is to identify and describe the stages in the sharing economy development. Methodologically, the research relies on institutionalism, digital economics, and sharing economics. Methods of systematisation and comparative analysis are used. The study reveals five stages in the sharing economy development: basic, technological, platform, social and advanced – that differ in terms of spread and level of digital technologies and initiate and support emerging institutional changes. The paper proves that external factors such as the appearance of IT giants and the COVID-19 pandemic affected the change of stages in the development of sharing economy. Digitalisation promoted the evolution of new sharing economy tools and altered the nature of goods and services consumption. The findings are of practical value since they can be used in forecasting the outcomes of sharing economy projects.
Digital banking ecosystems: Comparative analysis and competition regulation in Russia
Authors: Galazova Svetlana
Published: January 2024

Digital ecosystems allow banks to expand their offerings of financial and non-financial services, and thereby raise the quality and speed of customer service. Yet the broader range of banks’ non-financial services increases the size of their non-core assets and affects their financial stability. This creates certain complexities to ecosystems’ management both at the level of a bank and at the level of financial market regulation. The study covers theoretical and practical aspects of setting up and developing ecosystems in the Russian banking industry. The theory of industrial organisation and the ecosystem concept constitute the methodological basis of the research. The study adopts comparative and structural analysis methods. The evidence comes from public and internal reporting of PAO Sberbank, AO Tinkoff Bank, VTB Bank (PAO). The research found that banking ecosystems differ in the key area of activities (for instance, the Tinkoff Bank’s ecosystem focuses on investment and education, whereas VTB Bank’s one concentrates on a housing programme), nature of interaction between their participants, and the method of creation (universal, niche, outsourcing, insourcing). The development specifics of digital banking ecosystems depend on their specialisation, structure of immobilised assets, customer base, and level of business processes’ digitalisation. The value of the research comes from the revealed structural and functional peculiarities of digital ecosystems in the banking industry, as well as in the proved necessity to further refine the methods for accounting and assessing immobilised assets of banks.
MammaPrint™ 70-gene signature with ultralowrisk profile – characteristics and results in the AGEMA-BRA cohort
Authors: Mansani Fabio Postiglione , Freitas-Júnior Ruffo de
Published: January 2024

Objective: The objective of this study was to analyze the clinical characteristics and outcomes of the ultralow-risk population of the AGEMA-BRA study and compare them with data from the MINDACT study. Methodology: This is a retrospective study of patients submitted to genomic risk assessment by the 70-gene MammaPrint™ signature, in the Brazilian population, in a database provided by GenCell, from 2016 to 2020 (AGEMA-BRA study). Patients with an MP score>0.355 were considered an ultralow risk (ULR). To verify the association between qualitative variables, the chisquare test was used. This study was approved by the research ethics committee of the State University of Ponta Grossa (CAAE: 12194219.4.0000.0105). Results: The population under analysis corresponds to 951 patients, of which 542 (57.1%) were at genomic low risk, with 144 (15.2%) at ULR. Clinical characteristics and outcomes were available for 251 patients with follow-up (FU) of 42 months, and all low-risk patients (nULR and ULR) were alive, with one living with the disease in each group (nULR and ULR). Univariate analysis of epidemiological, anatomopathological, and immunohistochemical characteristics was performed. In this analysis, only the tumor grade reached statistical significance (p=0.004) demonstrating in the nULR patients 13.7% G1, 67.7% G2, and 18.5% G3 and in the ULR cases 34% G1, 59.6% G2, and 6.4% G3. The other parameters analyzed did not reach statistical significance. Conclusion: Comparative analysis between the epidemiological, anatomopathological, and immunohistochemical characteristics of patients with nULR and ULR proved to be very similar with statistically significant differences only in tumor grade. In the MINDACT study, size, tumor grade, and progesterone receptor positivity reached significance. The evaluation of the outcomes, with a mean FU of 42 months, did not show relevance between nULR and ULR, probably due to the low aggressiveness of the disease (which is linked to the late risk of relapse) and to the sample size. Analysis with larger FU and in a larger universe of patients is necessary to confirm these results.
Drug resistance in luminal breast tumors: Results of a novel in vitro breast cancer chemoresistance platform
Authors: Lichtenfels Martina , Severo Caio Caloca , Conrado Marco Aurélio Veiga , Barbosa Isis Mendes , Silva Camila Alves da , Marcolin Júlia Caroline , Farias Caroline Brunetto de , Pedrini José Luiz
Published: January 2024

Objective: The aim of our preliminary study was to validate a novel in vitro chemoresistance platform to predict the response of luminal tumors to cytotoxic drugs commonly used in neoadjuvant settings. Methodology: Patients with estrogen receptor (ER)-positive breast cancer tumors who underwent upfront surgery were included. Fresh tumor samples were collected during surgery and dissociated to obtain the tumor cells. The tumor cells were cultured in the chemoresistance platform with anthracyclines and taxanes, and after 72 h, cell viability was evaluated. The test result is defined based on cell viability as low (60%) resistance. One BC cell line (MCF-7 (luminal)) was used to confirm the response to the drugs. Results: Samples from 13 patients diagnosed with ER+/HER positive and/ or negative undergoing upfront surgery were tested in the chemoresistance platform. Nine (69.2%) patients presented luminal A tumors, 2 (15.4%) luminal B, and 2 (15.4%) luminal B/HER2. The chemoresistance platform demonstrated that samples presented higher resistance to taxanes compared with anthracyclines. In taxanes, 75% presented high resistance to docetaxel and 61.6% to paclitaxel, and in anthracyclines, only 15%, and 8.3% presented high resistance to doxorubicin and epirubicin, respectively. To confirm these differences in drug response, we evaluated the cell survival rate of an ER-positive cell lineage (MCF-7) after the treatment with the same drugs using the IC50 (50% inhibitory concentration). In accordance with our previous results, we observed lower rates of high resistance to doxorubicin (34%) and epirubicin (37%) and higher rates using paclitaxel (58%) and docetaxel (67%). Conclusion: This preliminary finding highlighted the technique success of the in vitro chemoresistance platform and suggested a possible role of intrinsic resistance in the worse response to neochemotherapy of patients with luminal tumors.
Accuracy of stereotactic vaccum-assisted breast biopsy for investigating suspicious calcifications in 2,021 patients at a public hospital in Brazil
Authors: Amorim Andressa , Mattar Andre , Teixeira Marina Diógenes , Ramos Marcellus do Nascimento Moreira , Antonini Marcelo , Damous Luciana Lamarão , Lopes Reginaldo Guedes Coelho , Gebrim Luiz Henrique
Published: January 2024

Objective: The objective of this study was to evaluate the accuracy of vacuum-assisted stereotactic biopsy (VASB) in the investigation of nonpalpable suspicious calcifications. Methodology: It was a retrospective study from July 2012 to December 2020, in which 2,021 women with suspicious calcifications detected on mammography (BI-RADS 4 and 5) had VASB performed at Hospital Estadual Pérola Byington, São Paulo, Brazil. Fragments were obtained and sent to an anatomopathological study; a metal clip was placed on the biopsy site. Four groups were analyzed, based on the biopsy results: benign, precursor lesions, ductal carcinoma in situ (DCIS), and invasive ductal carcinoma (ICD). Results: The median age of patients was 55 years (49–63 years). Pathology results on VASB were classified, respectively, as benign n=1,340 (66.3%), precursor lesions n=84 (4.1%), DCIS n=441 (21.8%), and ICD n=156 (7.7%). In the 60 patients whose VASB results were benign because of anatomopathological disagreement, surgery was performed. The following results were obtained: benign n=30 (50%), ICD and DCIS n=21 (35%), and precursor lesions n=9 (15%). The sensitivity of the method was 91.7%, specificity was 97.1%, false negative rate was 3%, positive predictive value was 92.4%, and negative predictive value was 96.9%. Conclusion: The VASB method has good accuracy in distinguishing lower and higher-risk lesion groups compared with the gold standard. It has high predictive value in both benign and malignant lesions, guiding therapeutic planning.
Screening and diagnosis of breast cancer in older women in Brazil: Why should recommendations be reconsidered?
Authors: Rocha Aline Ferreira Bandeira de Melo , Freitas-Júnior Ruffo , Soares Leonardo Ribeiro , Ferreira Glalber Luiz da Rocha , Rahal Rosemar Macedo Sousa
Published: January 2024

Objective: Breast cancer is considered one of the current challenges of population aging. Nevertheless, there is disagreement about screening in older women over 70 years of age due to the lack of prospective, controlled, and randomized studies that include women in this group. The aim of this study was to evaluate Brazilian data on mammography screening and staging of breast cancer in women over 70 years. Methodology: This was an ecological time series study. Information on screening and staging of breast cancer in the Unified Health System (SUS) in women over 70 years of age was analyzed and compared with the group aged 50–69 years in Brazil and its five regions from 2013 to 2019. The secondary database was compiled with information from the Outpatient Information System of the Informatics Department of the SUS, the Oncology Brazil Panel, the Brazilian Institute of Geography and Statistics, the Supplementary Health the Supplemental Health Agency, and the Online Mortality Atlas. Trends in rates of mammography screening and clinical staging of breast cancer were analyzed. Results: In the regression analysis, a more significant decline in follow-up was observed in the 70+-year-old group, with an APC of –3.5 (p<0.001), compared with the 50- to 69-year-old group APC – 2.2 (p=0.010). There was a trend toward an increase in the advanced stage, but it was more pronounced in the 70+-year-old group. Clinical staging analysis revealed a higher incidence of stages III and IV in the elderly population (44.3%) compared with the 50–69-year-old group (40.8%; p<0.001). Conclusion: Considering the aging of the Brazilian population and the heterogeneity of the functional and cognitive status of older women, mammography screening in the group over 70 years of age in SUS needs to be better discussed in the context of public policy implementation.
Comfort program: Accessible strategy to give voice to a little heard patient
Authors: Tumeh Isabella Barros Rabelo Gontijo , Molina Lorena Nascimento Manrique , Bergerot Cristiane Decat , Jacinto Mizza Nery Rocha , Santos Isabella Ferreira , Moreira Arethuzza Alves , Freitas-Júnior Ruffo de
Published: January 2024

Objective: We analyzed the accessibility of a virtual program developed for women with advanced cancer undergoing chemotherapy treatment by the Unified Health System. We ranked the benefits of participating in the program according to the patient’s experience. Methodology: A longitudinal study of quantitative and qualitative was carried out with 78 women diagnosed with locally advanced and/or metastatic breast and gynecological cancer. All participants used the Comfort Program for at least one chemotherapy cycle over the 6 months of the study. We carried out a semi-structured interview to absorb the experience throughout the participation in the program. Data were analyzed with descriptive and inferential statistics, using Student’s t-test and Pearson’s correlation test. Qualitative analysis was performed by two independent evaluators using Bardin’s content analysis method. Results: There was no correlation between the frequency of participation in the program and social factors (age, education level, and income). Most of the participants reported more about their symptoms to the oncologists (70.4%; N 57), the oncologists encouraged their participation in the program and helped with the reported symptoms (60%; N 52), and 91% (N 75) of the patients denied difficulties with understanding of the guidelines offered throughout the participation. The program was classified according to three categories: practicality with the use of the Internet, welcoming space, and ease of reaching help/referrals. The difficulties were related to physical discomfort, forgetfulness, and the unavailability of the internet. Conclusion: In another study, we found benefits of using the Comfort Program in the management of symptoms during chemotherapy. In this study, in addition to numbers, patients brought their own perception of the program and we identified that it is an accessible strategy, facilitating communication between patients and care providers. Regardless of the frequency of participation, women showed greater attention to discomfort, which may suggest greater tolerance to chemotherapy treatment.
Predictors of biopsychosocial distress in women with locally advanced and/or metastatic breast cancer
Authors: Moreira Arethuzza Alves , Tumeh Isabella Barros Rabelo Gontijo , Brito Leiliane Alcântara , Souza Izabel Carvalho , Magnago Alyne Silva Brito , Teles Antonio Gomes , Bezerra Willyara Rodrigues , Lemos Nayara Alves de Freitas
Published: January 2024

Objective: The objective of this study was to identify predictors of biopsychosocial distress in women with locally advanced and/or metastatic breast cancer. Methodology: This is a quantitative cross-sectional study carried out with 125 women with locally advanced and/or metastatic breast cancer. The Palliative Performace Scale, the Edmonton Symptom Assessment Scale, and a sociodemographic questionnaire were used. Data were analyzed using descriptive and inferential statistics. We used the Shapiro-Wilk test and the Spearman correlation matrix. Results: The performance of patients had a mean of 39 and median of 40 (0–100), and survival after referral to palliative care was 75.96 days, median 13 (SD 144.73; 1–618). The most intense symptoms were lack of appetite (mean 6.59; SD 3.58; 0–10), anxiety (mean 6.05; SD 3.76; 0–10), and fatigue (mean 5.86; SD 3.63; 0–10). Pain and nausea were correlated with worse performance (p<0.05) and distress with worse fatigue, sadness, anxiety, lack of appetite, dyspnea, and malaise (p<0.05). Conclusion: Our results suggest that younger patients are more prone to psychosocial distress, especially showing greater lack of appetite, anxiety, and fatigue. For equitable and comprehensive care, it is necessary to implement symptom screening strategies, as well as interprofessional management, according to the correlation between experienced symptoms.