bluuebunny/crossref_metadata_2025 huggingface dataset:
YouTube como herramienta para la construcción de la sociedad del conocimiento
Authors: López Aguilar José Luis
Published: August 2022

Este trabajo se inserta en la línea temática la educación inclusiva y el desarrollo humano, dentro del subtema la virtualización y los escenarios de aprendizaje, y corresponde a un primer avance de una investigación más amplia dentro del desarrollo de una tesis doctoral, en la cual se estudia a YouTube como canal de comunicación educativa. El objetivo es examinar las potencialidades de YouTube como medio para compartir conocimiento. En un estudio descriptivo, haciendo uso del método de análisis documental, en primera instancia se parte del estado de la cuestión e identifican posiciones teóricas sobre esta nueva etapa de la historia de la humanidad: la sociedad de la información (SI), que emerge en gran parte como resultado de la masificación de las tecnologías de la información y la comunicación. Luego se contrasta con el punto de vista de otros autores que manifiestan que la sociedad de la información no es lo mismo que la sociedad del conocimiento, por lo cual se analizan sus diferencias. A continuación, se exploran las características del nuevo sistema mediático con base en internet, haciendo hincapié en los medios colaborativos, como eje significativo de la sociedad del conocimiento. Por último, el estudio se centra en YouTube, donde se analizan sus características, los formatos y prácticas de producción, y el fenómeno de los youtubers como actores importantes en la construcción de una nueva cultura de difusión del conocimiento. Se concluye que YouTube es un espacio cuyas características lo convierten en una potencial herramienta cuyo aprovechamiento puede contribuir a la consolidación de la sociedad del conocimiento.
Postproducción y educomunicación en el audiovisual infantil: un proceso creativo con responsabilidad
Authors: Pacheco Zerda Patricia , Zerda Reyes Mercedes
Published: August 2022

El fenómeno de la influencia de los medios en niños y niñas ha sido en las últimas décadas objeto de estudio de organizaciones preocupadas por analizar la calidad de contenidos que se ofrecen, esta situación abre un espacio de discusión en donde se deja al descubierto la necesidad de crear contenidos audiovisuales infantiles de calidad basándose en la interrelación entre el contenido y las emociones que genere éste en el espectador. Dentro de este contexto se vuelve indispensable comprender el papel de la educomunicación como agente rector del proceso de creación de contenido audiovisual infantil, así como también los procesos técnicos que contribuyen a generar emociones que permitirán experiencias de aprendizaje necesarias para evaluar a este tipo de material audiovisual como una producción de calidad. El siguiente trabajo de investigación tiene como objetivo analizar los elementos técnicos de postproducción y educomunicativos, mediante el estudio de audiovisuales infantiles nacionales y experiencias de expertos para la producción de programas infantiles de calidad. La metodología aplicada es de tipo descriptivo, aplicando el método de análisis documental en la revisión de referentes audiovisuales infantiles en nuestro contexto. Asimismo, se aplica la entrevista a expertos sobre el tema y se contrasta con la técnica del focus group. Como resultado se muestra la carencia de estándares educomunicativos de calidad en la producción de audiovisuales infantiles. Lo que permite llegar a la conclusión que la educomunicación y la postproducción son dos disciplinas que deben integrarse en los procesos de producción audiovisual infantil de calidad.
Liderazgo académico: estilos y perfiles de gestión en las instituciones de educación superior.
Authors: Macías Arias Enrique Javier , Chum Molina Sandy Raúl , Aray Intriago César Augusto , Rodríguez Vera Carlos Javier
Published: August 2022

La importancia del liderazgo de los directivos como uno de los elementos que contribuyen a la calidad de la educación hace que su valoración resulte un asunto de enorme interés. En este estudio de tipo descriptivo, con empleo del método análisis documental, nos planteamos como objetivo caracterizar el liderazgo en instituciones de educación superior, porque es un reto que las instituciones de educación tienen como premisa fundamental en nuestra sociedad contemporánea; este incluye el guiar, inspirar e impulsar a los seguidores a realizar acciones éticas con valores y responsabilidad social, por ello el liderazgo en el ámbito de la educación superior deberá tener estas características mencionadas con el fin de mejorar la sociedad. A la hora de plantear la eficacia de las instituciones de educación superior y la calidad de este ámbito se suele considerar al liderazgo como uno de los factores clave. En términos generales podemos concluir que el liderazgo sigue siendo uno de los temas más controvertidos en el campo de la elaboración teórica, en el de las políticas educativas y prácticas concernientes a la organización de las instituciones educativas en el ámbito superior.
ENTRE GRITOS E SATÉLITES, AS IMAGENS À NOSSA VOLTA
Authors: Ormaneze Fabiano
Published: August 2022

ENTRE GRITOS E SATÉLITES, AS IMAGENS À NOSSA VOLTA
REVOLTA DAS AGULHAS
Authors: Massagardi Fernanda Maria Macahiba
Published: August 2022

REVOLTA DAS AGULHAS
Caracterização de argilas e caule do mussiro (Olax dissitiflora Oliver) para a produção de máscara facial
Authors: Napote Quitéria José , Zeferino Florinda António , Cumbane Paulo José , Sitoe Alcides Everildo José , Manhique Arão João , Madivate Carvalho Mendes de Oliveira
Published: August 2022

As argilas são materiais cuja composição e propriedades as tornam candidatas para o tratamento da pele. A combinação de argilas e plantas com potencial cosmético pode criar sinergias. O mussiro é usado em tratamentos de pele em Moçambique. O trabalho avalia a combinação da argila e o caule do mussiro para produção de máscara facial. As argilas foram caracterizadas por XRD, XRF, TGA, determinação da capacidade de troca catiónica, área superficial específica e actividade antimicrobiana. Os fitoconstituintes dos extractos hidroetanólicos e etanólicos do mussiro foram identificados por testes colorimétricos e de precipitação com reagentes específicos. A argila foi esterilizada com etanol 80% e aquecimento à 120 oC por 24 horas. A eficácia da esterilização foi verificada por sementeira em placas de petri contendo ágar Mueller Hinton e incubação por 24 horas. As argilas mostraram a presença de caulinite, muscovite, esmectites, como principais fases minerais. Fe, Al, K, Mg, Na e Ti foram identificados como os principais elementos na argila. A capacidade de troca catiónica e área superficial específica foi de 9.79 cmol+/kg e 38.61 m2/g respectivamente. A argila mostrou actividade contra a C. albicans, E. coli e S. aureus. Nos extractos hidroetanólicos do caule foram identificados compostos fenólicos, flavonóides, alcalóides, taninos, terpenóides, esteróides e saponinas. O método de esterilização mostrou-se eficaz na eliminação de microrganismos. Esta composição (compostos fenólicos, flavonóides, alcalóides, taninos, terpenóides, esteróides e saponinas) é consistente com propriedades antioxidantes e antimicrobianas dos extractos, podendo ser usada junto da argila para produção da máscara facial.
O espaço e o tempo da construção da práxis docente no estágio supervisionado
Authors: Coelho Maria Marly de Oliveira , Marques Maria do Perpétuo Socorro Duarte , Nicácio Elenir da Conceição Lima , Brito Rosa Mendonça de
Published: August 2022

Este trabalho decorre das reflexões sobre os relatórios de estágio e das avaliações dos estagiários do Curso de Pedagogia da Universidade Federal do Amazonas, efetivados no final do Estágio Supervisionado I – Educação Infantil, da Faculdade de Educação, em 2018. Tem por objetivo apresentar os entendimentos dos alunos a respeito das condições do espaço onde foi desenvolvida a dimensão prática do estágio e sobre o tempo destinado ao mesmo. As análises realizadas a partir das narrativas colhidas através de documentos produzidos no final do estágio estão sustentadas em teóricos que tratam da temática, entre os quais: Franco (2012), Pimenta (2004), Perrenoud (2002), Nóvoa (2009), Roldão (2014), demonstram que o tempo foi suficiente para o desenvolvimento da prática pedagógica, mas alertam sobre a forma de organização do currículo que, segundo entendem, dificulta o desenvolvimento do estágio, especialmente por terem que cursar outras disciplinas concomitante com o estágio, o que leva a um acúmulo de atividades dificultando o desempenho dos mesmos.
Influência da temperatura na secagem da casca do mangostin (Garcinia mangostana) e avaliação de modelos matemáticos
Authors: Bonzi Jenniffer Ines Di Silva , Ferreira Otávio Maticoli , Murakami Carolina Mieko , Martelli Silvia Maria , Werle Leandro Osmar , Galante Raquel Manozzo
Published: August 2022

O mangostin (Garcinia mangostana) é uma fruta tropical original do sudeste da Ásia, sendo que as diferentes xantonas presente em sua casca despertou grande interesse na indústria farmacêutica e alimentícia. Este trabalho teve por objetivo analisar a cinética da secagem do mangostin em diferentes temperaturas, e ajustar modelos matemáticos aos dados experimentais. O coeficiente de determinação (R2), erro percentual médio absoluto (MAPE) e erro quadrático médio (MSE) foram utilizados para analisar o grau de ajuste dos modelos. Verificou-se que o tempo mínimo para a secagem foi de 13h para a temperatura de 50oC, e os valores obtidos para a difusividade efetiva variou de 2,06.10-3 a 2,55.10-3 cm2.min-1 para as temperaturas estudadas. Com relação ao ajuste dos modelos, o de Midilli foi o que melhor representou os dados experimentais da cinética do mangostin, seguido do modelo Logarítimo.
Dificuldades de aprendizagem: estratégias de intervenção na dislalia e Dislexia
Authors: Almeida Bernard Pereira
Published: August 2022

As dificuldades ou distúrbios de aprendizagem muito afetam o desenvolvimento da aprendizagem de uma criança, gerando problemas escolares, como o fracasso escolar, e até mesmo problemas no seu convívio em sociedade, pois, muitas vezes, a criança com dificuldades é tratada por incapaz ou preguiçosa. Nesse contexto, o presente estudo teve como principal objetivo analisar os efeitos da dislalia e dislexia na aprendizagem da criança, buscando estratégias de intervenção que possibilitem sua aprendizagem da mesma forma que as demais crianças. Para tal, partiu de uma metodologia de revisão bibliográfica, coletando dados e informações relacionados ao tema e analisando-os com uma abordagem qualitativa. Dessa forma, pode-se concluir que, primeiramente, a participação do professor e da família da criança, para a identificação e análise da situação de dificuldade enfrentada por esta, é essencial. Ainda, a motivação mostra-se um fator fundamental. E, por fim, a aplicação de métodos de ensino por meio de diferentes materiais de ensino, jogos e brincadeiras, pode, em muito, cooperar para um melhor desempenho acadêmico e aprendizagem do aluno com dislalia e dislexia.
“Café com Canela” contribui para maior representatividade no cinema
Authors: Hermes Gilmar
Published: August 2022

Este artigo faz uma análise semiótica da reportagem com autoria de Luiz Carlos Merten sobre o filme Café com Canela, publicada em 2018. São observados os signos que constituem o texto caracterizando a atitude retórica do autor para com o público leitor do jornal, potencial espectador do filme. O tratamento de aspectos criativos do filme, diante da necessidade de maior representatividade feminina, negra e homossexual no cinema, é pensado através das reflexões teóricas apresentadas pelo autor Vilém Flusser (2002, 2007) em suas obras. Estabelecendo uma analogia da arte cinematográfica com a noção de “aparelho” problematizada pelo escritor, observa-se os modelos e programas como constituintes de um cinema a ser modificado, dependendo de agenciamentos dos cineastas, jornalistas culturais e públicos.
Corpo e violência na construção das intersubjetividades juvenis no ensino médio: lutas por reconhecimento
Authors: Link Elmer Erico , Silva Jeferson da , Ratto Cleber Gibbon
Published: August 2022

Busca-se neste ensaio, apresentar de forma sucinta os primeiros passos de um projeto de tese de doutorado, na intenção de entender a construção da intersubjetividade juvenil e luta por reconhecimento no corpo, na integração pessoal no contexto escolar do ensino médio.  A partir do fenômeno intersubjetivo que os jovens apresentam no ambiente escolar, na tensão potente, dos estereótipos de jovens violentos e apáticos, que dão indícios de patologias sociais na contemporaneidade. Essa transição tem causado uma crise nas formas de viver, de educar e nas instituições tradicionais. No intuito de compreender o jovem e seu discurso contemporâneo marcado pelos sintomas da cultura, fundamentar-se-á na Teoria de Luta por reconhecimento de Axel Honneth e na teoria psicanalítica do Amadurecimento pessoal de Donald Winnicott, uma pesquisa investigativa, exploratória e descritiva. A partir dos dados que serão coletados junto aos jovens do Ensino Médio, através de grupo de discussão, numa fusão de horizontes na perspectiva fenomenológica-hermenêutica em Hans-Georg Gadamer que permita compreender o fenômeno social.
Elevated Levels of Anti-SARS-Cov2 IgG Antibody in Health Care Workers in Hospitals From Hamadan Province, Iran: A Prospective Study
Authors: Jalili Ebrahim , Bashirian Saeid , Faryabi Mohammad Reza , Noroozbeygi Mina , Daneshyar Ebrahim , Ghelichkhani Samereh , Khazaei Salman , Solgi Ghasem
Published: August 2022

Aim: Seroprevalence among health care workers (HCWs) has been estimated in different studies in various regions and countries. This study aimed to screen the immunoglobulin M (IgM) and IgG seroprevalences and to assess the durability of IgG seropositivity, as well as the incidence of subsequent severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in a group of Iranian HCWs. Methods: This voluntary serological screening was prospectively performed on 800 HCWs (492 females and 308 males) in Hamadan between November 2020 and February 2021. Anti-SARS-CoV-2 IgG and IgM antibodies were assessed by the enzyme-linked immunosorbent assay method at two-time intervals. Results: Overall, 243 out of 800 (30.38%) and 66 (8.25%) cases were IgG and IgM seropositive at their first antibody assessment, respectively. The male staff had a higher seroprevalence than females (31.49% vs. 29.67% for IgG, P=0.59 and 10.39% vs. 6.91% for IgM, P=0.08). Higher prevalences for both antibodies were found in the age group of 30-39.9 years (P=0.12 and P=0.05, respectively). In the second antibody screening, 81 (56.6%) cases were IgG seropositive. The mean titer of the first IgG antibody assessment in seropositive cases was lower than that of the second titer (2.95±2.07 vs. 5.08±4.01 cut-off index (COI) , P=1.4×10-5 ). Moreover, the comparison of the first and second IgG titers among 81 seropositive cases demonstrated a significantly increased level of anti-SARS-CoV-2 antibody (5.08±4.01 vs. 3.49±2.41 COI, P=0.002). Conclusions: Our findings revealed that the mean level of the anti-SARS-CoV-2 IgG antibody was significantly increased in the seropositive individuals after 2 months of follow-up.
Shared Decision-making in Trauma and Emergency Surgery Settings: A Literature Review
Authors: Dal Mas Francesca , Massaro Maurizio , Woltz Sarah , Ruta Federico , Catena Fausto , Fugazzola Paola , Ansaloni Luca , Cobianchi Lorenzo
Published: August 2022

Emergency teams are made up of professionals of different specialities, including emergency physicians, surgeons, anesthesiologists, and nurses. Such units are characterized by the need to face unexpected situations with little time to make clinical decisions. In trauma and emergency settings, clinicians must act in a coordinated way, ensuring, at the same time, proper knowledge transfer and sharing to reach the best possible result for the patient. While such dynamics must be explicit and clear within the team, involving the patient in the decision-making process may require additional tools and procedures. Indeed, the time to engage with the patient and the family to understand the patient’s wishes and treatment preferences may be limited or absent at all. While the so-called shared decision-making (SDM) stands as one of the pillars of the modern patient-centric healthcare scenario, knowledge translation and transfer dynamics may appear particularly challenging in emergency settings. Starting from an investigation of the recent literature on SDM, the paper presents a literature review of the barriers, facilitators, and knowledge translation dynamics of SDM in trauma and emergency surgery. Results assess the importance, tools, and dynamics of SDM processes.
Knowledge Management Practices in a Religious Organisation in South Africa
Authors: Cyster Chantall , Salubi Oghenere
Published: August 2022

Knowledge Management has developed over the years into a mainstream organisational necessity to achieve success and organisational effectiveness. Religious organisations are one of the most producers of knowledge. In many parts of Africa, several Pentecostal churches are established regularly, especially in crowded informal settlements. The knowledge conversion model was utilised to assess the knowledge management practices at a Pentecostal church in an informal settlement in Cape Town, South Africa. The objectives of the study were to examine the awareness and uptake of KM in the religious organisations, determine the level of openness of the members and leaders to knowledge sharing and conversion as well as assess how religious organisations leverage knowledge conversion and KM practices in achieving their goals in spreading the gospel and to enhance their community services. The church leadership and adult members of the church constituted the study population. The findings of this study revealed that the level of awareness and uptake of KM was very low because there was no documented training as well as responsible individuals responsible for the management of knowledge. Tacit knowledge is being shared informally through dialogue communication and religious meetings. However, this knowledge is not formally extracted, documented, or converted into explicit knowledge for organisational productivity, further sharing and future reuse. Although some of the leaders were not keen on knowing explicitly managed and shared in the organisation, religious members thought it is very important for knowledge to be documented and shared. Furthermore, as knowledge sharing is not prioritised within the organisation, the goal of spreading the gospel and to enhance their community services was found to be sluggish. The study developed a conceptual model for implementing knowledge management in Pentecostal religious organisations.
Lessons Learned process case study: An unintended enabler of upstream and downstream knowledge management capabilities at the European Space Agency
Authors: Herd Andrew , Piretti Francesca
Published: August 2022

The paper presents a case study of the European Space Agency which has been coordinating internal knowledge management activities at the corporate level of the Agency for just over 6 years. In this time, previous, current, and future knowledge management activities have been respectively collected, supported, and planned with the immediate intent of addressing potential knowledge loss due to an on-going retirement wave – which will last until 2030. One of the ranges of knowledge management techniques applied is the lessons learned process, with associated means and tools being realised for the capture and exchange of experience.

Through the focus on using the validated and evaluated lessons to achieve systematic learning, the lessons learned process has achieved learning at the point of use, rather than mostly keeping the learning within the established Lessons Learned tool, which has also had (unintentionally) caused an enabling effect for other organisational capabilities relating to not only knowledge but also information and data management.

The Agency has then made a relatively rapid transition to adopting a systematic approach to Lessons Learned – by both creating the need for (pre-requisite) upstream and “downstream” capabilities. The downstream benefits (learning flowing out of the experience capture) has been achieved by identifying the process, product and people involved in the desired learning outcome, and assuring the learning is placed at this point. In taking the approach of broadening the reach of a traditional lessons learned process (mostly with the aim of more effectively addressing user needs), the establishment of lessons learned capabilities has also enabled the needed upstream development activities for the deployment of lessons learned itself. Aspects such as a solid IT infrastructure (common platform), a robust set of classification terms (taxonomy), and the existence of users with a clear identity (communities of practice).

The paper will present the current (but rapidly progressing) status of lessons learned at ESA, and the upstream and downstream effects from the perspective of lessons learned as part of an overall organisational strategy to create a culture and climate of openness and sharing (knowledge management) and digitalisation (information and data management).
Knowledge Dynamics and Phronesis in Performing Family Business
Authors: Bratianu Constantin , Motoc Adrian
Published: August 2022

The purpose of this paper is to analyze the role of knowledge dynamics and phronesis in performing family business and show that both constructs constitute core competencies for these specific organizations within the Romanian economic environment. Knowledge dynamics have different interpretations depending on the metaphorical thinking used in conceptualizing knowledge. We based our research on the energy metaphor and the theory of knowledge fields, adopting a thermodynamics perspective. Rational, emotional, and spiritual knowledge interact continuously, and each form of knowledge can be transformed into another form, like in thermodynamics. Aristotle introduced Phronesis when he explained that knowledge manifests in one of the following fundamental forms: episteme, techne, and phronesis. Phronesis represents prudence or practical wisdom in making decisions. Aristotle remarks that phronesis is concerned with action about good or bad things for the human being, underlying the spiritual characteristic of this form of knowledge. Today, there is a significant trend in the knowledge management research reflecting the need to better understand the role of knowledge dynamics and phronesis in developing wise organizations (see for instance, the recent book published by Ikujiro Nonaka and Hirotaka Takeuchi, and the works published by Raysa Rocha and Paulo Pinheiro). The present research focuses on the role of knowledge dynamics and phronesis in the family business, considering that relations between the family members differ from employees' relations in a company, from emotional and spiritual points of view. We performed qualitative research based on a series of interviews with members of such a family business. We processed the qualitative data based on the grounded theory. Findings demonstrate that knowledge dynamics and phronesis play a significant role in the process of decision making and achieving a competitive advantage in the business environment.
The Dynamics of Power and Micropolitics on Project Management
Authors: Olaisen Johan , Jevnaker Birgit Helene
Published: August 2022

The empirically investigated problem of our paper is what impact do micropolitics and power have upon the conduct of project management in an organization? The informal power and micropolitics played a massive role in the projects, and personal and relational knowledge appeared in all projects to achieve the expected results. The project manager uses personal networks, personal relations, and mentor's network together with cognitive, affective, and emotional influence as power and politics if needed to achieve expected results. Power and micropolitics were necessary skills and tools for a successful project manager. The findings relate to the manager's intentions. The informal power and micro-politics process are reused in every project because informal power and micropolitics are a part of project work. Power accumulation and wise handling are essential leadership tools for every manager. Employees work for managers who have power over those who do not. The former can get them what they want: visibility, upwards mobility, and resources. Micropolitics and power represent a unique competence (i.e., knowledge, experiences, and attitudes) and tool for handling any project. A democratic and consensus-oriented decision process opens for power games and micropolitics rather than hedging them in more hierarchical organizations. A complex matrix organization involving employees in many projects is also open to micropolitics and power. Micropolitics and power might prolong and complicate decisions processes in ordinary projects and improve processes in fast-track projects. Micropolitics and power might thus both increase and reduce the effectiveness and efficiency of an organization.
Facilitating Cyber Security Threat Modelling: A Social Capital Perspective
Authors: Orjatsalo Johanna
Published: August 2022

To identify and manage their cyber security risks, organisations need to form a thorough understanding of various factors that may expose them to these risks. While cyber security professionals and scholars have developed a plethora of practical methodologies and frameworks to support cyber security risk identification and mitigation, the theoretical foundations on what promotes effective knowledge creation when using these methodologies and frameworks are nascent. Yet, theories developed in the field of knowledge management and intellectual capital may provide valuable insight on how to enhance cyber security risk related knowledge creation in organisations. For example, social capital is considered as an important prerequisite for knowledge exchange and combination when creating new intellectual capital (Nahapiet & Ghoshal, 1998). However, more focused research is required to understand how social capital affects knowledge creation in the context of organisational cyber security risk related activities.

 

Using qualitative data gathered from three cyber security threat modelling workshops, this paper examines how social capital enables conditions for exchanging and combining knowledge on cyber security threats. By comparing the empirical observations with Nahapiet and Ghoshal’s (1998) model, this study identifies practical approaches that are used by threat modelling workshop facilitators to create conditions for effective knowledge exchange and combination. This study provides both cyber security scholars and professionals with an example on how to use knowledge creation related academic theories to analyse and further enhance cyber security risk management approaches by creating a connection between Nahapiet and Ghoshal’s (1998) social capital model and cyber security threat modelling.
Knowledge Management, Including the Cybernetic Theory of Human Character
Authors: Ziebacz Izabela
Published: August 2022

Man and his functioning in an organization are of interest to specialists in various fields, including psychology, management, but also technicians who, despite the progress in their own disciplines, are not able to effectively solve the problem of human reliability in the process of knowledge management in an organization. The problem is insufficient knowledge about people. On the other hand, the demands placed on employees today are constantly increasing. They are expected to be more and more active, entrepreneurial, creative, and have a higher and higher level of many skills, such as: handling information, interpersonal communication, and making effective decisions. However, can all employees meet these requirements and what factors and mechanisms decide about compliance? These are questions that cannot be answered unequivocally based solely on past professional experience. Correct answers constitute forecasts that allow to predict how individual units will behave in various types of professional situations in the future. These deliberations are complemented and developed by the globally pioneering character’s cybernetics theory as described by Prof. Mazur. The aim of the work is an attempt to test, in organizational conditions, the correlation between employees' knowledge and their cyber character, in order to check the compliance between the places occupied in the organization and their individual predispositions (character). The use of the cybernetic character theory, in connection with the elements of knowledge about organization and management, can be a tool for making optimal management decisions. The originality of the work is based on the combination of the cybernetic theory of characters with the mathematical apparatus using C.A. Shannon's information entropy.
GeoSPARQL-Jena: Implementation and Benchmarking of a GeoSPARQL Graphstore
Authors: Osman Taha
Published: August 2022

This work presents an RDF graphstore implementation for all six modules of the GeoSPARQL standard using the Apache Jena Semantic Web library. Previous implementations have provided only partial coverage of the GeoSPARQL standard. There is discussion of the design and development of on-demand indexes to improve query performance without incurring lengthy data preparation delays. A supporting benchmarking framework is also discussed for the evaluation of any SPARQL compliant queries with interfaces provided for integrating additional test systems. This benchmarking framework is utilised to examine the performance of the implementation against two existing GeoSPARQL systems using the Geographica benchmark. It is found that the implementation achieves comparable or faster query responses than the alternative systems while also providing much faster dataset loading and initialisation durations.
Factors influencing transfer of Learning in the ICT sector. A conceptual framework.
Authors: Mangion Margaret
Published: August 2022

Learning takes place constantly, including in workplace settings. Exploring which factors may facilitate or hinder the transfer of learning in the workplace may have implications on organisational performance. Following a review of the extant literature exploring factors that impact situated learning, and bi the Situated Learning Transfer Model emerged as a potential tool that may make learning processes more explicit.

A qualitative approach using semi-structured interviews with 40 respondents from two ICT companies was used to collect data that would operationalise the Situated Learning Transfer Model.  Deductive analysis using four overarching themes categories: (i) respondents’ perception of workplace learning, (ii) factors affecting transfer of situated learning at an organisational level will be noted, (iii) individual level in relation to how factors affecting the transfer of situated learning, and (iv) transfer climate was conducted. The findings support the Situated Learning Transfer model and indicate that the workplace is a rich, contextual environment where learning can take place.  Factors that affect situated learning may be observed at the organisational and individual level with the support of an adequate transfer climate.  The workplace provides a social context where individuals interact and learn from each other.  This study focuses on this type of learning that takes place in situ.

This paper is a first attempt to operationalise the Situated Learning Transfer Model which gives prominence to learning taking place at the organizational level and at the individual level within the work environment. There is considerable scope for situated learning to be placed at a strategic level to gain leverage and enhance organizational performance.
Sel Bahan Bakar Oksida Padat Sebagai Sumber Energi Yang Ramah Lingkungan di Masa Pandemik COVID-19
Authors: Putri Rihan Amila , Noviyanti Atiek Rostika
Published: August 2022

COVID-19 (caused by SARS-CoV-2) has spread throughout the world. The need of power supply for hospitals are one of the concerns during pandemic. Power requirement can be fulfilled by SOFC through an electrochemical process to generate electricity. SOFC efficiency up to 85% which can be an alternative that providing an environmentally friendly (low emission) and efficient to generate electricity. SOFC components which fulfilled various aspects, are expected to produce good electrochemical performance in order to form high efficiency when combined with CHP, APU, or UPS to help overcoming the electricity supply in hospitals and health centre during the COVID-19 pandemic.
The Relationship between Stability and Ion Conduction of Trivalent Cation Doped Ceria
Authors: La Kilo Akram , Kusrini Kusrini , Botutihe Deasy Natalia
Published: August 2022

This research aims to study the stability of CeO2 structure which doped with trivalent oxide which become Ce1-xMxO2- ( M= Lu3+, Yb3+, Er3+, Y3+, Gd3+, Eu3+, Sm3+, dan La3+) compound through atomistic simulation, the value of x present the concentration number of the substitution dopant of Ce4+ partially and the concentration of the dopant is limited to 10%. This research is explorative theoretical using methods of computational chemistry by atomistic simulating using GULP. The objects in this study was 8 trivalent oxide with the short-range potential as the input data. Potential short-range used in this study is the Buckingham potential. The results of geometry optimization at a constant pressure showed the differences between cell parameters of doped CeO2 before and after the atomistic simulation corresponds with the experimental results is only 0.02%. The results showed that the stability of doped CeO2 structure is decreased with increasing concentrations of dopants. A decrease int he stability of CeO2 doped with Lu, Ce, Er, Gd, Eu, Nd and La is greater than the decrease in the stability of CeO2 doped with Sm, Y and Yb.
Efek Pra Klinik Teripang Pasir (Holothuria scabra) Untuk Pemulihan Luka Insisi Pada Mencit Jantan (Mus musculus)
Authors: Abdulkadir Widy Susanti , Suleman Ahmad Rifly , Hasan Hamsidar
Published: August 2022

Teripang pasir (Holothuria scabra) merupakan salah satu biota laut yang dapat menyembuhkan luka karena mengandung senyawa alkaloid, saponin dan terpenoid. Senyawa ini berperan dalam membantu penyembuhan luka. Luka insisi adalah hilang atau rusaknya sebagian jaringan tubuh yang disebabkan oleh trauma benda tajam. Penelitian ini bertujuan untuk mengetahui efektivitas ekstrak Metanol teripang pasir dalam penyembuhan luka insisi pada mencit jantan. Teripang pasir diekstraksi dengan metode maserasi menggunakan pelarut Metanol. Uji efektivitas penyembuhan luka insisi dilakukan dengan membagi hewan uji ke dalam 6 kelompok uji yang terdiri dari 3 ekor mencit jantan. Semua mencit diberi perlakuan sesuai kelompok uji: kelompok 1 (kontrol negatif), kelompok 2 (kontrol positif PI 10%), kelompok 3 (ekstrak teripang pasir 10%), kelompok 4 (ekstrak teripang pasir 20%), kelompok 5 (ekstrak teripang pasir 25%) dan kelompok 6 (ekstrak teripang pasir 30%) hingga luka tersebut sembuh atau terlihat jaringan parut berwarna putih. Hasil penelitian menunjukkan bahwa terdapat perbedaan yang signifikan antara kontrol positif terhadap kelompok lain. Ekstrak Metanol teripang pasir yang dapat menyembuhkan luka insisi pada mencit jantan terdapat pada konsentrasi 30%.
Sintesis Senyawa Phenyllactic Acid (2-Hydroxy-3-Phenylpropionic acid) dan Aktivitasnya sebagai Antibakteri
Authors: Wulandari Sri , Aryati Fika , Ramadhan Adam M. , Rahmadani Agung
Published: August 2022

Phenyllactic acid merupakan asam organik yang banyak terdapat di madu dan dapat dihasikan dari fermentasi bakteri asam laktat pada makanan yang diproduksi oleh beberapa mikroorganisme. Phenyllactic acid memiliki aktivitas antimikroba spektrum luas terhadap bakteri dan jamur. Phenyllactic acid dapat disintesis berdasarkan reaksi diazotasi. Dalam penelitian ini, phenyllactic acid disintesis dari bahan dasar fenilalanin dan natrium nitrit dengan katalis asam sulfat pada suhu -5oC selama 2 jam. Hasil karakterisasi menggunakan MS, 1H-NMR dan 13C-NMR menunjukan telah terbentuknya senyawa phenyllactic acid dengan rendemen 40,6%. Dilakukan pengujian aktivitas antibakteri senyawa phenyllactic acid yang ditunjukkan dengan adanya zona hambat pada bakteri Escherichia coli dan Staphylococcus aureus pada konsentrasi 0,5% masing-masing sebesar 11.05 mm dan 12.02 mm.
POTENSI EKSTRAK ETANOL KULIT BUAH MATOA (Pometia pinnata J.R Forst & G.Forst) TERHADAP BAKTERI PENYEBAB KARIES GIGI
Authors: Pakaya Mahdalena Sy , Astuti Kai Jihan , Zuriati Uno Wiwit
Published: August 2022

One of the infectious diseases that occur in the oral cavity is dental caries (cavities). The bacteria that play a role in the occurrence of infection are Streptococcus mutans bacteria, and the matoa plant is one of the plants that can act as antibacterial (Pometia pinnata J.R Forst) which has high efficacious compounds. This study aimed to determine the activity and potency of the ethanolic extract of matoa fruit peel (Pometia pinnata J.R Forst & G. Forst) against Streptococcus mutans bacteria. This research is a laboratory experimental research. Matoa fruit peel simplicia was extracted by maceration method with 96% ethanol solvent, then tested for phytochemical screening to determine the class of compounds contained in the matoa fruit peel. Furthermore, the activity was tested against Streptococcus mutans bacteria using a positive control of chloramphenicol antibiotics and a negative control of Dimethyl Sulfoxide. After that, the values of the Minimum Inhibitory Level and Minimum Killer were measured. From these results, it was continued to test the antibacterial potential using the Kirby Bauer method. The results showed that the ethanol extract of matoa fruit peel (Pometia pinnata J.R Forst & G. Forst) had activity against Streptococcus mutans bacteria. The potential value of the matoa fruit peel extract against Streptococcus mutans bacteria at concentrations of 25%, 50% and 75%, respectively, was 11.75 mm, 15.82 mm and 18.75 mm which was included in the category of strong inhibition.
SKRINING FITOKIMIA DAN UJI AKTIVITAS ANTIOKSIDAN EKSTRAK ETANOL BUNGA ROSELLA UNGU (Hibiscus sabdariffa L.)
Authors: Lestari Gusti Ayu Dewi
Published: August 2022

Ekstrak etanol bunga rosella ungu (Hibiscus sabdariffa L.) mengandung senyawa fitokimia potensial sebagai antioksidan. Tujuan penelitian ini adalah untuk mengetahui kandungan senyawa pada bunga rosella ungu (Hibiscus sabdariffa L.) serta potensinya sebagai antioksidan. Bunga rosella ungu (Hibiscus sabdariffa L.) diekstraksi menggunakan metode maserasi dan diperoleh persentase rendemen hasil sebesar 35,25%. Skrining fitokimia dilakukan dengan metode KLT dimana ekstrak etanol bunga rosella ungu (Hibiscus sabdariffa L.) positif mengandung alkaloid, flavonoid, tanin dan saponin. Hasil uji aktivitas antioksidan dengan menggunakan DPPH (2,2-difenil-1-pikrilhidrazil) diperoleh nilai IC50 sebesar 38,2939 ppm dimana ekstrak etanol bunga rosella ungu (Hibiscus sabdariffa L.) memiliki aktivitas antioksidan sangat kuat. Nilai AAI (antioxidant activity index) diperoleh 1,04. Nilai presisi dan linearitas pada metode ini adalah 7,67% dan r2 = 0,9929 sehingga metode ini dapat dikatakan memiliki presisi dan linearitas yang baik. Dari hasil penelitian yang telah dilakukan, maka dapat disimpulkan bahwa bunga rosella ungu (Hibiscus sabdariffa L.) memiliki aktivitas antioksidan yang sangat kuat karena mengandung senyawa flavonoid, alkaloid, tanin dan saponin yang dapat menangkal radikal bebas.
Isolasi Dan Identifikasi Senyawa Metabolit Sekunder Ekstrak Etil Asetat Daun Sambiloto
Authors: Bialangi Nurhayati , Idris Reski Rahmatia , La Kilo Akram , Kilo Ahmad Kadir
Published: August 2022

Penelitian ini bertujuan untuk mengisolasi dan mengidentifikasi senyawa metabolit sekunder ekstrak etil asetat dari daun sambiloto. Isolasi tersebut dilakukan melalui tahap maserasi, fraksinasi, dan kromatografi. Identifikasi ekstrak tersebut dan isolatnya dilakukan dengan cara uji fitokimia, spektrofotometer-UV Vis, dan IR. Daun sambiloto kering sebanyak 633 gram dimaserasi dengan metanol selama 3×24 jam, dan diperoleh ekstrak kental metanol setelah melalui proses evaporasi. Ekstrak tersebut difraksinasi berturut-turut dengan n-heksana dan etil asetat untuk menghasilkan ekstrak kental etil asetat sebanyak 21,99 gram. Kemudian, ekstrak kental etil asetat dipisahkan dengan kromatografi kolom dan diuji kemurniannya dengan KLT dan diperoleh isolat murni yang berupa kristal putih dengan berat 126,3 mg. Hasil uji fitokimia ekstrak etil asetat menunjukkan bahwa daun sambiloto mengandung flavanoid dan triterpenoid. Sementara, isolat murni yang dihasilkan adalah senyawa triterpenoid. Hasil pengukuran spektrofotometer UV-Vis menunjukkan adanya 2 pita serapan pada panjang gelombang 278 dan 202, dan hasil pengukuran spektrofotometer IR adanya gugus fungsi O-H alkohol pada bilangan gelombang 3426.5 cm-1, C-H alifatik pada bilangan gelombang 2918.1 cm-1 dan 1463.3 cm-1, C=O pada bilangan gelombang 1640.6 cm-1, C=C alkena pada bilangan gelombang 1559.2 cm-1, C-H pada bilangan gelombang 802.5 cm-1 dan 886.4 cm-1, dan C-O alkohol pada bilangan gelombang 1099.6 cm-1 yang menandakan bahwa isolat merupakan suatu senyawa golongan triterpenoid
Analisis Penentuan Jenis Pondasi Pada Tanah Lunak dengan Menggunakan Metoda Meyerhof Dan Brom (Ref.Tomlinson, Page 229-232) (Studi Kasus: Perencanaan Pembangunan Sisi Udara Taxi Way, Exit Taxi Way, Dan Apron, Bandar Udara Aji Pangeran Tumenggung Pranoto Samarinda, Kalimantan Timur)
Authors: Schipper Lucky Amperawan
Published: August 2022

Bila suatu konstruksi yang berada di atas tanah lunak akan menemui masalah terutama berkaitan dengan besarnya penurunan yang akan terjadi setelah sebuah konstruksi didirikan diatasnya. Hal ini disebabkan karena tingginya kadar air dalam tanah yang dapat menyebabkan hilangnya lekatan antar butiran tanah. Tujuan dari analisis ini adalah untuk mengetahui analisisi rencana pondasi pada tanah lunak. Adapun Hasil Analisa karena tanahnya “bermasalah” yaitu termasuk tanah lunak. Penanganan berdasarkan data uji tanah dengan untuk menentukan penggunaan jenis pondasi yang akan digunakan. Untuk rekomendasi pondasi dalam, berdasarkan data hasil analisa tanah baik data lapangan maupun data uji lab kondisi di lokasi studi kasus sisi bandara (Taxi way, Exit Taxi way, dan Apron), Bandar Udara adalah tanah lunak dengan daya dukung dan hambatan lekat / friction yang sangat kecil, maka untuk desain pondasi dalam direncanakan dengan “pondasi tiang pancang” tipe “End Bearing”.
ESTIMASI EMISI C02 DARI AKTIVITAS RUMAH TANGGA DI DESA CIKALONG, KAB. BANDUNG BARAT
Authors: Artiningrum Tati , Havianto Citra Artifiani
Published: August 2022

Peningkatan jumlah penduduk dan aktivitas sehari-harinya yang menggunakan energi, berpengaruh pada peningkatan salah satu Gas Rumah Kaca (GRK) yaitu Karbon dioksida(CO2). Dalam kehidupan sehari-hari, energi memegang peranan yang sangat penting karena hampir semua sektor kehidupan seperti industri, transportasi, jasa, rumah tangga dan lain sebagainya menggunakan energi. Pada sektor rumah tangga penggunaan energi meliputi penerangan dan memasak  yang konsumsi energi tersebut menyebabkan emisi gas CO2. Total Emisi CO2  dari aktivitas rumah tangga dapat dibagi menjadi emisi langsung dan emisi tidak langsung. Pada penelitian yang dilaksanakan di Desa Cikalong, Kabupaten Bandung Barat ini,digunakan metode IPPC 2006 untuk meneliti besarnya emisi gas CO2 yang dihasilkan dari aktivitas rumah tangga meliputi penggunaan bahan bakar yg digunakan rumah tangga untuk memasak baik bahan bakar fosil maupun terbarukan dan konsumsi listrik. Hasil penelitian menunjukkan besarnya total emisi CO2 yang dihasilkan adalah 2308,19 ton CO2e/tahun yang terdiri dari  emisi langsung 651,321 ton CO2e/tahun dan emisi tidak langsung1656,870 ton CO2e/tahun.
Assessment of Phytochemical Diversity in Phyllanthus amarus Using HPTLC Fingerprints
Authors: Khan Salim , K Singla Rajeev , Zainul Abdin Malik
Published: August 2022

Phyllanthus amarus is an important medicinal plant and immensely used in the Indian System of Medicine to cure human diseases. Different types of secondary metabolites present in various organs of it, helped in evaluation of phytochemical diversity in different geographical conditions. We studied on 19 populations of this species collected from different geographical regions of India. All collected populations were differed to each other based on morphological as well as phytochemical markers. The population P18 showed more phytochemical diversity as compared to P3 and P6 which was evaluated by NTSYS-pc program. The phytochemical diversity was found more in leaves followed by seeds, stem and roots from one geographical region to another region. © 2008011 IGJPS. All rights reserved
Antioxidant Potential of Some Under-Utilized Fruits
Authors: Prakash Dhan , Upadhyay Garima , P Pushpangadan
Published: August 2022

To identify their potential sources extracts of some fruits and their different parts were studied for total phenolic contents (TPC), antioxidant (AOA) and free radical scavenging activities (FRSA). Phenols have profound importance due to their biological and free radical scavenging activities. The amount of TPC varied from 10.5 to 343.2 mg/g and AOA from 20.3 to 96.7%. Fruits of Caesalpinia mexicana, Acacia auriculiformis, fruit pericarp fibres of Cocus nucifera, and fruits of Emblica officinalis were found to have high TPC (73.1-343.2 mg/g) and high AOA (68.5-96.7%). Promising fruits were studied for their FRSA and reducing power (RP) measured by DPPH assay where the fruits of Caesalpinia mexicana, fruit pericarp fibres of Cocus nucifera, fruits of Emblica officinalis showed very low IC50 ranging from 0.009 to 0.016 mg/ml, EC50 from 0.39 to 0.70 mg/mg DPPH and reasonably high values (142.1- 256.3) of anti radical power (ARP), indicating their strong FRSA and reducing power (RP) as evident by their low ASE/ml values (0.42- 1.08). They also showed better inhibition of lipid peroxidation measured by using ferric thiocyanate assay and by using egg yolk compared to reference standard, quercetin. The ferrous and ferric ion chelating capacity of the promising fruits and their underutilized parts in terms of IC50 varied from 0.12 (Emblica officinalis, fruits) to 2.44 mg/ml (Mangifera indica, Seed kernel) and 0.22 (Caesalpinia mexicana, fruits) to 2.59 mg/ml (Litchi chinensis, fruit peel) respectively. Fruit of Acacia auriculiformis, Caesalpinia mexicana, Emblica officinalis, fruit pericarp fibres of Cocus nucifera, were also assayed for their specific phenolic composition through HPLC where the amount of caffeic acid varied from 48.5 to 2231 µg/g, chlorogenic acid 63.8 to 912.1 µg/g, ellagic acid 46.4 to 1429.1 µg/g, ferulic acid 36.7 to 762.9 µg/g, gallic acid 181.6 to 2831.6 µg/g, protocatechuic acid 41.7 to 322.8 µg/g, and quercetin 44.6 to 367.6 µg/g. © 2011 IGJPS. All rights reserved