bluuebunny/crossref_metadata_2025 huggingface dataset:
Effects of a recalcitrant understory fern layer in an enclosed tropical restoration experiment
Authors: Beltrán Luis C. , Aguilar-Dorantes Karla María , Howe Henry F.
Published: July 2020

Establishing mixed-species tree plantings and fencing them to protect seedlings from herbivory is a valuable strategy for reconnecting forest fragments separated by agropastoral lands. However, fencing may provide exotic plants with the escape from herbivory required to invade the understory of planted communities. Here we take advantage of such a situation to ask how the identity of planted species and the resulting canopy cover influenced invasion success by the Asian swordtail fern (Nephrolepis brownii Desv. Nephrolepidaceae) in a 13-year-old tropical restoration experiment. Through a seed addition experiment, we also evaluated the effects the ferns had on recruiting seedlings. We found that the invasion was most acute in the unplanted control plots where canopy cover was consistently scarce. Frond density correlated negatively with canopy cover, though most of the variance in the model is explained by the design of our experiment (r2m = .161, r2c = .460). Between planting treatments that differed in the dispersal mode of the planted trees, the wind-dispersed treatment had higher fern density and longer fronds than the animal-dispersed treatment. The animal-dispersed treatment had the highest recruiting species richness, which was negatively correlated with fern density (r2 = .748). The seed addition experiment confirmed that mortality rates increased where frond density was higher (F1,41 = 7.159, p = .011) and germination rates were lowered for the smaller-seeded species (F1,42 = 13.2, p = .002). To prevent recalcitrant understory layers from establishing in plantings in the future, we recommend: (1) establishing larger plantings or expanding existing ones to minimize edge effects (particularly light filtration), (2) supplementing young plantings with additional seedlings to prevent canopy gaps from forming, and (3) planting an assemblage of species that cover the full forest strata and have consistently full tree-canopies.
3. L’évaluation qualitative, informatisée, participative et inter-oganisationnelle (EQUIPO)
Authors: Bujold Mathieu , Fortin Jean-Alexandre
Published: July 2020

Les programmes de développement visent à produire des changements dans des communautés touchées par des problématiques socioculturelles complexes, par exemple l’égalité entre les femmes et les hommes, où s’entrecroise une pluralité de significations. L’évaluation de ces programmes nécessite une approche systématique mobilisant la collaboration entre les parties prenantes de différentes organisations. Les trois volets d’Évaluation Qualitative Informatisée et Participative inter-organisationnelle (ÉQUIPO) visent à répondre à ces réalités complexes. Le volet qualitatif vise à comprendre les processus de changement depuis les points de vue de ceux ou celles qui expérimentent une situation complexe. Le volet participatif en favorisant la participation démocratique des parties prenantes rappelle que l’évaluation de programmes n’est pas une fin en soi, mais un moyen d’améliorer les conditions sociales et collectives. Le volet inter-organisationnel stimule les échanges entre des ONG partageant des missions similaires. Cette méthode d’apprentissage dans l’action a été développée en 2012, lors d’un projet pilote d’évaluation de programmes d’ONG boliviennes promouvant l’égalité entre les femmes et les hommes. L’objectif de ce chapitre n’est pas de présenter les résultats de l’évaluation spécifique des programmes, mais plutôt de décrire la méthode ÉQUIPO, le contexte dans laquelle elle a émergé, et de présenter ses répercussions et les défis de son application depuis les perspectives des co-évaluateurs et évaluatrices qui ont participé à ce projet pilote.
5. L’analyse d’une recherche-action
Authors: Bony Roger Sylvestre Aka , Ridde Valéry , Queuille Ludovic
Published: July 2020

Depuis 2011, une recherche-action est menée dans le cadre d’un projet de subvention de l’accès aux soins des enfants de moins de cinq ans, des femmes enceintes et allaitantes au district sanitaire de Sebba au Burkina Faso. Elle vise à expérimenter une innovation, le remboursement au forfait des prestations de soins de santé délivrés gratuitement aux patients afin de résoudre les difficultés inhérentes au projet de subvention de l’accès aux soins rencontrées par les agents de santé et l’ONG subventionnaire. Parmi les difficultés figurent entres autres la charge de travail pour le personnel de santé, les coûts de production des outils de collecte des données. Les résultats préliminaires de cette recherche-action étant probants, il est apparu nécessaire d’analyser la démarche utilisée pour la mettre en œuvre. Pour y parvenir, une analyse externe combinée à une analyse réflexive des parties prenantes a permis de tirer les leçons idoines qui ont permis de guider d’autres recherches-actions. La réussite d’une telle démarche d’analyse est passée par i) l’élaboration d’une grille d’analyse comportant des éléments factuels pour mener à bien l’analyse externe, ii) une bonne préparation de l’analyse réflexive et iii) une implication des parties prenantes au processus d’analyse dès le début.
7. L’intégration en méthodes mixtes
Authors: Pluye Pierre
Published: July 2020

Les méthodes mixtes (MM) sont de plus en plus populaires. En utilisant les MM, les chercheuses et chercheurs intègrent des méthodes qualitatives (QUAL) et quantitatives (QUAN), par exemple au niveau des questions et devis de recherche, et des collectes et analyses des données. Plusieurs stratégies d’intégration ont été proposées, mais leur conceptualisation est généralement limitée, fragmentée, ou non testée scientifiquement. Cela constitue un défi pour planifier et effectuer des études utilisant les MM, et pour enseigner les MM. Fondé sur la littérature méthodologique, ce chapitre présente un cadre conceptuel incluant tous les types d’intégration connus, des stratégies pratiques et des combinaisons possibles de stratégies pour intégrer les phases, les résultats et les données QUAL et QUAN. Dans le chapitre suivant, ce cadre est testé avec une revue des études utilisant les MM. Cette revue illustre plusieurs types de combinaisons avec des études en santé mondiale. Ensemble, ces deux chapitres contribuent à faire avancer les connaissances méthodologiques par (a) un appel à une meilleure description des MM dans les publications scientifiques, et (b) une conceptualisation testée proposant trois types d’intégration et neuf stratégies spécifiques, et toutes les combinaisons possibles des stratégies pour intégrer les phases, résultats et données QUAL et QUAN.
12. L’analyse coût-efficacité
Authors: Jouquet Guillaume
Published: July 2020

L’évaluation économique décrite ici a été achevée en 2013 et fait partie d’une évaluation plus globale menée par quatre évaluateurs et évaluatrices indépendants à la demande de Médecins sans Frontière (MSF) dans un double but de documentation des expériences acquises et de plaidoyer. Le programme évalué a débuté en 2007 dans la région de Shiselweni au Swaziland en partenariat avec MSF et le ministère de la Santé publique. Ce programme de traitement du SIDA avait la particularité d’être décentralisé et intégré au niveau des centres de santé primaire. Il s’agissait d’une démarche innovante au Swaziland où le traitement du SIDA était alors centralisé au niveau des centres de santé secondaire. Les approches décentralisées du traitement du SIDA dans les pays en développement ont fait l’objet de plusieurs études montrant leur efficacité. Le but de la présente évaluation était d’y ajouter un volet économique. Nous avons donc mené une étude rétrospective de coût-efficacité du point de vue du prestataire de service avec calcul du ratio de coût efficacité incrémental (ICER). Les principales difficultés pour une évaluation telle que celle-ci résident 1) dans l’accès aux données financières des prestataires de service 2) dans la mesure du gain d’efficacité liée à l’approche alternative en isolant les éventuels facteurs de confusion.
13. L’analyse spatiale
Authors: Bonnet Emmanuel , Ouédraogo Samiratou , Saré Diane
Published: July 2020

Ce chapitre présente une analyse spatiale d’une intervention qui vise à évaluer si des valeurs similaires d’un résultat sont plus susceptibles de former des grappes dans une zone d’étude. Cette méthode appelée « indicateurs locaux d’association spatiale » (local indicators of spatial association – LISA) permet d’identifier les zones où les valeurs sont spatialement dépendantes les unes des autres. LISA a été utilisé pour évaluer l’effet d’une intervention communautaire visant à contrôler le moustique responsable de la propagation de la dengue Aedes aegypti dans deux quartiers de Ouagadougou, capitale du Burkina Faso. L’évaluation finale de l’intervention à l’aide de cette méthode a montré que les groupes de larves ont disparu dans le quartier qui a reçu l’intervention alors qu’ils persistaient dans le quartier témoin.
15. L’évaluation de la fidélité d’implantation
Authors: Gautier Lara , M. Pirkle Catherine , Furgal Christopher , Lucas Michel
Published: July 2020

En 2011, la Régie régionale de la santé et des services sociaux du Nunavik a commencé à appuyer financièrement le Projet de Distribution d’Omble chevalier (Arctic Char Distribution Project ou AC/DP dans son acronyme en anglais) pour les femmes enceintes. Cette initiative favorisait la consommation d’une nourriture traditionnelle invite – le poisson « Omble chevalier » – pour les femmes enceintes vivant dans les villages du Nunavik, une région du nord du Québec peuplée majoritairement de personnes d’origine inuite. Cette intervention visait à réduire l’exposition aux contaminants environnementaux et à améliorer l’état nutritionnel et la sécurité alimentaire. La mise en œuvre du projet a été évaluée sur la base des données collectées à partir de documents du projet, de notes de terrain et d’entretiens qualitatifs avec les bénéficiaires et les exécutants du projet. Les thèmes émergeant des données ont été discutés à la lumière du cadre de fidélité à la mise en œuvre développé par Carroll et coll. (2007). Les femmes enceintes ont pleinement adopté l’initiative pour sa pertinence culturelle. Toutefois, la mise en œuvre du projet était incomplète : elle ne couvrait pas toutes les zones géographiques prévues, et il y avait une incohérence récurrente dans l’approvisionnement et la distribution du poisson. En outre, l’initiative n’était pas financée de façon stable. Ce travail montre que la complexité du projet est susceptible d’entraver la réussite de la mise en œuvre, en particulier en termes de communication et de coordination.
16. L’évaluation de la fidélité et de l’adaptation
Authors: Pérez Dennis , Castro Marta , Lefèvre Pierre
Published: July 2020

Ce chapitre porte sur l’évaluation de la fidélité dans la mise en œuvre et l’adaptation des interventions de santé mondiales. La fidélité, ou le degré avec lequel une intervention est mise en œuvre comme prévu par ses concepteurs. Elle est particulièrement destinée à assurer que l’intervention maintienne ses effets prévus. L’adaptation, au contraire, est la modification du modèle d’origine d’une intervention par les acteurs et actrices de sa mise en œuvre. Cinq dimensions ont été mises en avant pour mesurer la fidélité : l’adhérence, la dose, la qualité de la prestation, la réactivité des participant-e-s et la différentiation du programme. Cependant, peu de recherches ou de conseils pratiques portent sur la façon d’adapter une intervention, tout en maintenant les mécanismes essentiels à son efficacité. Les interventions peuvent être un mélange de fidélité et d’adaptation et l’évaluation doit examiner les deux aspects. Nous avons confronté notre recherche empirique avec la littérature existante sur la fidélité et en avons déduit que le cadre conceptuel proposé par Carroll permettait d’évaluer l’adaptation dans le contexte de la fidélité. Nous proposons des modifications à ce cadre pour accommoder les interventions en santé mondiales adaptables ainsi que des implications pratiques.
Using Extreme Learning Machines and the Backprojection Algorithm as an Alternative to Reconstruct Electrical Impedance Tomography Images
Authors: Gomes Juliana Carneiro , Araújo de Santana Maíra , Lins de Lima Clarisse , Emmanuel de Souza Ricardo , Pinheiro dos Santos Wellington
Published: July 2020

Electrical Impedance Tomography (EIT) is an imaging technique based on the excitation of electrode pairs applied to the surface of the imaged region. The electrical potentials generated from alternating current excitation are measured and then applied to boundary-based reconstruction methods. When compared to other imaging techniques, EIT is considered a low-cost technique without ionizing radiation emission, safer for patients. However, the resolution is still low, depending on efficient reconstruction methods and low computational cost. EIT has the potential to be used as an alternative test for early detection of breast lesions in general. The most accurate reconstruction methods tend to be very costly as they use optimization methods as a support. Backprojection tends to be rapid but more inaccurate. In this work, the authors propose a hybrid method, based on extreme learning machines and backprojection for EIT reconstruction. The results were applied to numerical phantoms and were considered adequate, with potential to be improved using post processing techniques.
The Evolution of New Trends in Breast Thermography
Authors: Araújo Marcus Costa de , Bezerra Luciete Alves , Queiroz Kamila Fernanda Ferreira da Cunha , Espíndola Nadja A. , Santos Ladjane Coelho dos , Santos Francisco George S. , Lima Rita de Cássia Fernandes de
Published: July 2020

In this chapter, the theoretical foundations of infrared radiation theory and the principles of the infrared imaging technique are presented. The use of infrared (IR) images has increased recently, especially due to the refinement and portability of thermographic cameras. As a result, this type of camera can be used for various medical applications. In this context, the use of IR images is proposed as an auxiliary tool for detecting disease and monitoring, especially for the early detection of breast cancer.
Towards Connected Governance
Authors: Ogunsola Kemi , Olojo Temilade Precious
Published: July 2020

This contribution examines the factors (performance expectancy, effort expectancy, social influence, and trust) that influence continuance usage intention of Web 2.0 by citizens. A questionnaire was administered to 311 users of Federal Inland Revenue Service and Federal Road Safety Commission's Facebook and Twitter pages in Lagos and Ibadan in Nigeria. Descriptive analyses were used to answer three research questions, while linear regression was used to test seven research hypotheses stated in the study. Findings reveal that there is a significant joint influence of performance expectancy, effort expectancy, and social influence on citizens' continuance usage intention of Web 2.0. There is also a significant joint influence relating to trust in the internet and the government on citizens' continuance usage intention of Web 2.0. Among others, the study recommends that government agencies should engage citizens more in public decisions making processes through the use of Web 2.0-related applications.
Data Security for Connected Governments and Organisations
Authors: Susanto Heru , Yie Leu Fang , Rosiyadi Didi , Basuki Akbari Indra , Setiana Desi
Published: July 2020

Digital ecosystems have grown rapidly over the years, and governments are investing in digital provision for their processes and services. Despite the advantages of distributed technologies, there are many security issues as well that result in breaches of data privacy with serious impact including legal and reputational implications. To deal with such threats, government agencies need to thoughtfully improve their security defences to protect data and systems by using automation and artificial intelligence (AI), as well as easing the data security measures including early warning of threats and detection. This study provides a comprehensive view of AI and automaton to highlight challenges and issues concerning data security and suggests steps to combat the issues. The authors demonstrate the role of AI-driven security tools and automation to mitigate the impact of data breaches to also propose recommendations for government agencies to enhance their data security protection.
A Study of Multiferroic BiFeO3/Epoxy Resin Composite as Potential Coating Materials for Microwave Absorption
Authors: Rusly Siti Nor Ain , Ismail Ismayadi , Matori Khamirul Amin , Abbas Zulkifly , Shaari Abdul Halim , Ibrahim Idza Riati
Published: July 2020

A single layer of BiFeO3 (BFO)/epoxy resin composite with thickness of 3 mm was fabricated by polymerized 70 wt% of sintered BFO as fillers and 30 wt% of epoxy resin polymer as matrix. The electromagnetic and the microwave absorption properties of BFO/epoxy resin composite were reported. The reflection loss (RL) of the same composite sample was measured by two different techniques of measurement, S11a parameter (without metal backed reflector) and S11b parameter (with metal backed reflector) in the range of 8-18 GHz using a network analyzer. Minimum RL (RLmin) from S11b parameter for BFO/epoxy resin composite with metal backed is lower than the RLmin from S11a composite without metal backed reflector. In details, the results showed BFO/epoxy resin composite with metal backed can achieve a strong absorption with RLmin of -40.5 dB over a 1.31 GHz bandwidth.
Determination of HOMO and LUMO Level of Polythiophene, Poly(3-Thiophene Acetic Acid), Polypyrrole and Chlorophyll via Cyclic Voltammetry Method
Authors: Salleh Hasiah , Ali Nora'aini , Yap Chi Chin , Sinin Azhar Mohd , Ishak Nurhayati , Kamarulzaman Nurul Huda , Ghazali Salmah Mohd , Nik Ali Nik Aziz
Published: July 2020

Cyclic voltammetry can be used to investigate the chemical reactivity of species ion via oxidation and reduction process. The purpose of this study is to determine the level energy of high occupied molecule orbital (HOMO) and low unoccupied molecule orbital (LUMO) in polythiophene (PT), Poly (3-thiophene acetic acid) (P3TAA), polypyrrole (PPY) and chlorophyll (Chlo) through oxidation and reduction of molecular ions by cyclic voltammetry method. PT, P3TAA, PPY and Chlo solutions were prepared in a solvent of acetonitrile at the concentration range of 10-2 to 10-4 M. The current-voltage measurements for these solutions are performed using cyclic voltammetry method on input voltage from -2.0 V to 2.0 V. The working electrode used is indium tin oxide (ITO). The result of voltammogram is showed that the activity of PT species were produced three oxidation and one reduction processes. The formal reduction potential, Eo¢ is 0.83 (positive) meaning that oxidation process was dominant. So that the reaction of PT species was exhibited irreversible electrochemical behavior. The reaction of P3TAA species was exhibited reversible electrochemical behavior, where the range value of oxidation, DEpa and reduction, DEpc were in range of 0.825 V to 1.120 V and -0.230 V to 0.131 V respectively. PYY species reaction was exhibited irreversible electrochemical behavior where two oxidation states occur within -0.145 V to -0.202 V and 0.870 V to 1.63 V respectively. The species activity of Chlo was exhibited irreversible electrochemical behavior where only the oxidation process was obviously appeared at range of 0.80 V to 0.95 V. The LUMO energy levels of PT, P3TAA PPY and Chlo were 5.84 eV, 5.34 eV, 1.10 eV and 3.85 eV respectively, while HOMO energy levels of PT, P3TAA PPY and Chlo were 4.61 eV, 4.25eV, 3.70 eV and 5.93 eV. The average value of energy gap of PT, P3TAA, PPY and Chlo were 1.23 eV, 1.08 eV, 2.23 eV and 1.10 eV respectively.
Gas Permeation Properties of Multiwalled Carbon Nanotubes on Polyether Block Amide (Pebax-1657)/Polyethersulfone(PES) Blend Mixed Matrix Membrane for CO2/CH4 Separation
Authors: Fazil Nabilah , Mukhtar Hilmi , Mohshim Dzeti Farhah , Nasir Rizwan
Published: July 2020

Mixed matrix membrane (MMM), a developing research area, is a membrane formed by incorporating fillers in the polymeric membrane to enhance gas separation performance. In this study, MMMs comprised of blend rubbery block copolymers of polyether block amide (Pebax-1657) with a glassy polyethersulfone (PES) polymer and multi-walled carbon nanotubes (MWCNTs) were synthesized by dry phase inversion method and explored further by gas permeability test. Pebax-1657/PES/MWCNTs membrane resulted in an increased permeability as well as CO2/CH4 selectivity. The Pebax-1657/PES polymer blend MMM with 10wt% of MWCNTs has shown the most superior performance of CO2 permeability, CH4 permeability and CO2/CH4 selectivity in comparison with the pure Pebax-1657 resulted in 66.3% and 11.6% difference respectively.
Band Gap Narrowing of MgO and Mg0.95Zn0.05O Nanostructures
Authors: Chayed Nor Fadilah , Badar Nurhanna , Elong Kelimah , Kamarulzaman Norlida
Published: July 2020

Preparation of MgO and Mg0.95Zn0.05O nanomaterials using self-propagating combustion method are done to investigate the effect of doping on the band gap energy. The synthesis condition has been optimized to obtain pure MgO and Mg0.95Zn0.05O materials which confirmed by XRD. FESEM results shows agglomeration of crystallite with average crystallite size of samples between 30 nm to 125 nm. The band gap obtained from the measurement of UV-Vis NIR spectrophotometer for MgO nanostructure is 6.36 eV which is lower than bulk MgO of 7.8 eV. The presence of Zn in Mg0.95Zn0.05O sample causes the narrowing of band gap to 5.33 eV.
Elastic Properties of Vanadium Doped Silica-Borotellurite Glasses
Authors: Nor Nurhayati Mohd , Kamari Halimah Mohamed , Latif Amirah Abdul , Shah Nurisya Mohd
Published: July 2020

Silica borotellurite glasses doped with different molar fraction of V2O5 have been prepared by melt quenching technique. The elastic properties of {[(TeO2)0.7 (B2O3)0.3]0.8(SiO2)0.2}(1-x)(V2O5)x glasses are investigated using ultrasonic pulse echo measurements and their elastic properties have been characterized at room temperature. The density of the glasses was measured by Archimedes method using distilled water as buoyant liquid. The ultrasonic wave velocities (longitudinal, vl and shear, vS) were recorded at 5 MHz. Elastic moduli, Poisson’s ratio (σ) and microhardness (H) were then calculated to obtain quantitative analysis regarding the structure of these glasses. The results obtained showed that the doping of V2O5 with silica borotellurite enhances the strengthening of glass network. Glass with 0.03 molar fraction of V205 shows low ultrasonic velocities and low elastic moduli. The variation of elastic properties is related to the change of structure in the vanadium doped silica-borotellurite glass system.
The Study of a Structural and Electronic Properties of Two-Dimensional Flat Layer Arsenene Using Planewaves Density Functional Calculation
Authors: Rosli Ahmad Nazrul , Anas Muhammad Mus'ab , Saadiah Halimatus
Published: July 2020

We explore the structural and electronic properties of a single layer arsenene using the state of art, first principle approach from density functional theory (DFT). All the calculation was conducted using an open source DFT code, adopted the planewaves (PWs) method by Quantum Espresso (QE). The calculation utilized an exchange correlation potential of electron parametrized by Perdew-Burke-Ernzerhof (PBE) under generalized gradient approximation (GGA) functional scheme. Meanwhile, the pseudopotential assigned for the core electron is the projector typed augmented-wave with the core potential correction, generated using "atomic" code. All those parameters resulted an optimized structure of the honeycomb arsenene with lattice constant of 4.4971 Ǻ. The arsenene layer occupy a bond length value of 2.5964 Ǻ as measured between its neighbouring bonded atoms. From an optimized structure, we explore its electronic bandstructure plotted from 3 highly symmetries point for 2-dimensional (2D) material known as ‘’, ‘’ and ‘’ with 3 electron pathways. The total number of bands considered in bandstruture plotting is 10, where 5 bands will consider as valance bands while another 5 is conduction bands. The bandstructure shows that a single layer flat arsenene exhibits the characteristics of a conductor due to the overlapping of band near to Fermi level. Dirac cone were also noticed near to the Fermi energy level of the bandstructure. Lastly, we study the total electron density for the whole structure to reveal its bonding characteristics. The contour plot of electron densities between two bounded atoms displayed a pure covalent bond characteristic. The findings of this work is expected to contribute to the key of the electronic devices development, optoelectronics, and sensor devices based on 2D material technology.Keywords: flat layer arsenene, density of state, electron density, electronic band structure
Structural Sizing of a Rotorcraft Fuselage Using an Integrated Design Approach
Authors: Schwinn Dominik B. , Weiand P. , Buchwald M.
Published: July 2020

For many years, the primary design objective of new helicopters was the design of the main rotor(s). Within the last couple of years, this approach has changed into an assessment of all helicopter components as an overall system, thus turning rotorcraft design into a highly interdisciplinary
process. For instance, aerodynamics, flight mechanics, and the structural evaluation strongly affect each other, and these mutual influences are taken into account from the early phase of the conceptual design. Weight prediction in early design stages represents an essential part of the design
process as it determines the basic properties of the rotorcraft. Owing to its function to carry crew and payload but also to serve as the central mounting for all components, the fuselage represents a major part of the rotorcraft. Therefore, the structural design of the fuselage airframe constitutes
a significant factor of the rotorcraft design at the preliminary level.
 In this paper, an approach to include a higher fidelity method using finite elements for the structural analysis of rotorcraft fuselages within an integrated design environment is presented. Model generation
and static analysis are conducted automatically. The helicopter is described using a common parametric data model during the complete design process, therefore providing a fast analysis of model changes. The generic finite element model presented in this paper was generated and structurally
sized in about 2.5 min using a standard office computer, thus offering the integration of higher fidelity methods into early design sizing loops.
The New Chinese Corpus of Literary Texts Litchi
Authors: Petrovčič Mateja , Garabík Radovan , Gajdoš Ľuboš
Published: July 2020

The aim of the article is to introduce the corpus of Chinese literary texts and to describe the process and design principles behind the corpus construction. The authors provide information regarding the reasoning behind the chosen structure and annotation of the corpus, and further discuss possibilities the corpus opens for linguistic research and language learning. The article provides several examples of how the corpus can be used at various levels of language research.
Mitigación del ruido ocupacional en el área de preparación de una industria empacadora y procesadora de atún
Authors: Campoverde Pillajo Carlos
Published: July 2020

El presente artículo muestra un estudio acústico para comprender y proponer medidas de mitigación para el ruido generado en el área de preparación de una empresa procesadora y empacadora de atún. Con la finalidad de medir y evaluar el ruido al que está expuesto el personal en sus puestos de trabajo, se realizó un análisis de la sonometría y dosimetría del área objeto de estudio, que permitió determinar si los resultados obtenidos se encontraban dentro de los límites establecidos por la normativa ecuatoriana (Decreto Ejecutivo 2393). La investigación incluye una recolección de datos con equipos adecuados y debidamente calibrados, utilizados en condiciones reales y regulares de trabajo. Los resultados obtenidos permitieron realizar recomendaciones de acuerdo a las condiciones de trabajo presentes en el área de preparación.
Derivados Financieros
Authors: Barriga Haz Kenya Denisse
Published: July 2020

En el Ecuador existen muchos derivados financieros como las opciones las cuales son consideradas como valores negociables de acuerdo a las leyes, normas y códigos vigentes en el país. Para los contratos de opciones se debe de tener bien en cuenta sus  normativas, ya que cada país las determina para que al momento de su celebración contractual no se no excluyan ningún aspecto importante y sobre todo que las dos partes que intervengan en el contrato estén de acuerdo con cada con lo determinado en el mismo, pero en este tipo de contrato solo uno tiene la obligación y también existe un tipo de garantía denominada prima por lo que si no se llega a completar el contrato en la fecha determinada se debe pagar dicha prima. Los contratos opciones se clasifican en puts y call los dos son compras y ventas de activos subyacentes en los cuales son negociados por la Bolsa de Valores que puede ser en Quito o en Guayaquil pero siempre teniendo presenten las normativas ecuatorianas como la Ley de mercado de valores, Código Civil, Código de Comercio, Ley Orgánica de Instituciones Del Sistema Financiero, la Ley de Mercado de Valores, la Codificación de Resoluciones Monetarias, Financieras, De Valores Y Seguros. Todas absolutamente todas estas normativas son muy importantes ya que son las que están vigentes en el Ecuador y son las que se deben utilizar para poder realizar los contratos de opciones sin ninguna dificultad.
Análisis de las decisiones de inversión a través de las opciones reales
Authors: Lamilla Kevin Yair
Published: July 2020

Proporcionadas las condiciones que presentan los métodos tradicionales de valoración de inversiones que son de representación contable, y la dificultad que se presenta para adaptarse a entornos cambiantes en lo que respecta las inversiones, se investiga el método de opciones reales una funciona apropiada para poder establecer una correcta toma de decisiones en el cual considera los intangibles y la flexibilidad operativa como los elementos que pueden alterar la decisión de realizar un proyecto de inversión  . El presente artículo representa una mirada general en las opciones reales, sus definiciones, modelos, tipología, y métodos de indagación apropiada tanto que presenta al final una atención al sector de la edificación del proyecto en la toma de decisiones de la entidad. En conclusión los  métodos establecidos en opciones reales son adecuados y determinantes para la evaluación de proyectos, dado su respaldo e inclusión de elementos en transparente se resalta cómo un éxito de la valoración que depende de los supuesta  información disponible para realizar métodos de valoración en la entidad.
Modelo de Simulación de Inventario basado en Algoritmo Optimización por Enjambre de Partículas (PSO) para minimizar costos por venta de productos perecederos
Authors: Borbor-Murillo David , Fajardo Jácome Geomayra , Sánchez-Holguín Lucrecia , Cevallos-Torres Lorenzo
Published: July 2020

El presente estudio tiene como objetivo minimizar el costo de ventas del negocio “Fruta Bar”, debido a los altos índices de pérdidas económicas por el desecho de materia prima dada su caducidad. Esta problemática surge a partir del manejo empírico que se le da al inventario, solicitando reabastecimiento cada determinado periodo de tiempo, pero sin prever la variación que podría surgir en el proceso de ventas, logrando así un excedente de materia prima que, al no ser utilizada durante su tiempo de vida, deberá ser desechada. Para cumplir la finalidad del estudio se desarrolla un modelo cuya implementación incluye el uso del Algoritmo PSO (Optimización por Enjambre de Partículas), dicho modelo simula la demanda de productos del 2020 tomando como referencia el volumen de ventas de los años 2017 al 2019. Los resultados reflejan la minimización de aproximadamente el 20% de los costos de ventas, además demuestran que los métodos metaheurísticos como el Algoritmo PSO, imitan comportamientos observados en la vida real y que, por estar relacionados a la Inteligencia Artificial, ofrecen una visión de lo que podría suceder a futuro.
Un modelo probabilístico de inventarios por demanda independiente mediante el uso de GRASP
Authors: Carrasco-Machado Jaime , Macías Ramos Antony , Morales-Muñoz Ronald
Published: July 2020

El objetivo de este estudio es minimizar el gasto de pedido innecesario que realiza la pañalera “La mejor pañalera”, debido a la poca demanda que tienen ciertos productos. Esta problemática surge debido a que los dueños tienen una incorrecta percepción sobre la demanda de los productos, realizando pedidos de forma empírica provocando que exista excedentes de estos en el establecimiento y por consiguiente se producen perdidas monetarias. Para llevar a cabo el objetivo de este estudio, se implementará una metodología que implica la aplicación del algoritmo Greedy Randomized Adaptive Search Procedure (GRASP) y Simulación de Montecarlo, la cual permitirá estimar cómo se comportará la demanda de los productos en el año 2020 tomando los datos históricos del negocio del año 2017, 2018, 2019, generando el segundo semestre del año 2019 con la simulación de Montecarlo. Obteniendo como resultado que la simulación y los métodos metaheurísticos dan valores cercanos a la realidad, resultado se obtuvo un 19.33% de reducción en gastos para 1 producto.
El testamento de Don Francisco de Solís Folch de Cardona, Cardenal Arzobispo de Sevilla (1755-1775)
Authors: Chillón Raposo David
Published: July 2020

El cardenal don Francisco de Solís Folch de Cardona murió en Roma el 12 de abril de 1775. Con una dilatada carrera cortesana y eclesiástica vivió una vida holgada, sus excesos económicos, su tren de vida y sus atenciones a los necesitados fueron las características más relevantes de su personalidad como prelado. Al igual que en Roma, Sevilla celebró solemnes exequias en su memoria, y un año más tarde se depositó su corazón en el convento de capuchinas de Santa Rosalía, como era su deseo. Antes de su último viaje a Italia, en 1766 dejó rubricado un documento con sus últimas voluntades, en él dejaba como heredero universal al deán y cabildo de la catedral de Sevilla, y nombrados a todos sus albaceas, provocando entre ellos una serie de conflictos de difícil solución. El artículo concluye con la aportación de un anexo con la transcripción de una copia del testamento del cardenal don Francisco de Solís Folch y Cardona que solicitó su hermano y albacea, don Alonso de Solís Folch de Cardona, IV duque de Montellano.
“Como vuestro Padre es misericordioso”. La misericordia en el evangelio de Lucas
Authors: Cabello Morales Pedro
Published: July 2020

El artículo nos presenta, en el marco del Jubileo extraordinario convocado por el Papa Francisco, un recorrido por la perspectiva lucana de la misericordia tal y como aparece en el tercer evangelio. Lucas, conocido como el evangelista de la misericordia, hace un subrayado especial en este aspecto fundamental de la revelación de Jesús. A la luz de algunos textos significativos, podemos entender mejor el sentido profundo de la misericordia y las implicaciones para nosotros hoy.
PENINGKATAN KADAR BIOETANOL DARI KULIT NANAS DENGAN BEKAS CRACKING PERTAMINA RU III TERAKTIVASI SECARA KIMIA
Authors: Roni Ki agus Ahmad , Rifdah Rifdah , Susanto Tri
Published: July 2020

Bioetanol adalah etanol yang dihasilkan dari fermentasi glukosa (gula), diikuti oleh proses distilasi. Metode lain selain penyulingan diperlukan untuk meningkatkan bioetanol yang dihasilkan. Penelitian ini bertujuan untuk meningkatkan kadar bioetanol dari kulit nanas menggunakan katalis perengkahan dengan membandingkan efektivitas penggunaan adsorben yang diaktifkan secara kimia menggunakan basa (NaOH) dan asam (HCl). Adsorben yang digunakan dalam penelitian ini adalah katalis perengkahan RU III, katalis FCC. Adsorben adalah sebagai pengganti adsorben zeolit alami, yang relatif mahal dibandingkan dengan katalis FCC. Hasil penelitian menunjukkan bahwa rasio yang paling efektif untuk kadar bioetanol adalah 10 mL: 6 gr adsorben yang diaktifkan oleh HCl, adalah 63,73%.
PEMANFAATAN AMPAS TEBU MENJADI PULP DENGAN PROSES PEROKSIDA ALKALI
Authors: Roni Kiagus Ahmad , Rifdah Rifdah , Susanto Tri
Published: July 2020

Limbah dari tebu, ampas tebu atau bagasse mengandung selulosa yang merupakan bahan baku utama pembuatan pulp. Kurangnya pemanfaatan limbah ampas tebu menjadikan ampas tebu menjadi tumpukan sampah yang mencemari lingkungan. Penelitian ini bertujuan untuk membuat pulp dari ampas tebu dengan menggunakan NaOH sebagai larutan pemasak dan H2O2. Metode penelitian dilakukan dengan memvariasikan larutan pemasak pada konsentrasi NaOH 2%, 4%, 5%, 6%, 8%, dan 10% dengan suhu 100oC, 110oC, 120oC, 130oC, dan 140oC, kemudian dilanjutkan dengan menghitung persentasi rendemen dan bilangan permanganate. Persentase rendemen yang paling tinggi adalah pada suhu 140oC dengan konsentrasi NaOH 2%, sedangkan bilangan permanganat yang paling rendah adalah pada suhu 140oC dengan konsentrasi NaOH 10%.
Auditor's Competence And Independence As Determinant Audit Quality With Gender As Moderating Variable
Authors: I Made Purba Astakoni  , Ida Bagus Swaputra  , Ni Made Satya Utami  , Yenny Verawati
Published: July 2020

This study has several objectives: 1) to find out and analyze the effect of auditor competence on audit quality, 2) to know and analyze the effect of auditor independence on audit quality, 3) to know and analyze the role of gender as a moderating effect on the influence of auditor competence on audit quality, 4) to find out and analyze the role of gender as a moderating effect on auditor independence on audit quality. This research was conducted at the Public Accounting Firm (KAP) in Denpasar City. The populations in this study were all auditors in the city of Denpasar, amounting to 112 people. Determination of the sample was done by purposive method, so that the number of samples selected was 53 people. Data collection techniques used was interviews supported by questionnaire with a closed multiple choices. Data analysis used was Partial Least Square (PLS) approach. The results showed that the overall strength of the model was stated to be very good. Hypothesis 1, which states that auditor competence has a significant positive effect on audit quality, can be accepted, Hypothesis 2, which states that auditor independence has a significant positive effect on audit quality, can also be accepted. Through a multi-group analysis it is stated that gender is able to be a moderating variable on the effect of auditor competence over the quality of an audit.Whereas gender testing as a moderating variable on the effect of auditor independence over the quality of an audit has not been tested.
Job Satisfaction Analysis Through Supervision, Motivation And Organizational Culture
Authors: Martin
Published: July 2020

Main objective of this research is is to find out the effect of motivation and organizational culture to the job satisfaction are affecting both partially and simultaneously on Budisatrya Institution. Its research using cause and effect approach which measured the effect of independent variable to dependent variable. The population of its research are 97 the teachers of Budisatrya Institution as respondent. The data of the research are from questionnaire with Likert scale that were distributed and answered by the respondent.  Double linear regression analysis is using of its research. The results show that all independent variable are positively and significantly affected to the job satisfaction. Supervision,motivation, and organizational culture are affecting job satisfaction,and dominant variable is supervision that Budisatrya do to their teachers.  

Keywords : Supervision, Motivation, Organizational Cultre, Jobs Sastisfaction.
Influence Competence And Placement of Employee On Employee Performance At PT. Xylo Indah Pratama in Musi Rawas Regency of Muara Beliti
Authors: Ronal Aprianto  , Fitria  , Suyadi  , Suwarno  , Yulpa Rabeta
Published: July 2020

This research was conducted to determine the effect of employee competency and placement on employee performance at PT. Xylo Indah Pratama Muara Beliti Musi Rawas Regency. The results of this study indicate that there is a significant effect between Competency and Employee Placement on Employee Performance

 

Keywords : Competence, Employee placement, Employee performance
Implementation of the Islamic Economics in the Traditional Market of Brebes Regency
Authors: Akbar Nuur Purnama Darma Wahana  , Syaifulloh Muhammad
Published: July 2020

The concept of Islamic Economics emphasizes that market Trading and pricing need to be regulated to uphold market balance and economic justice in view of interests of those involved in the market. This study aims to analyze the Islamic Economy’s observance in accordance with Islamic sharia in the traditional markets, the number of merchant populations used as samples was 138 people, the research method uses qualitative descriptive, data collection techniques by observation and structured interviews. The results showed that traders in the traditional market of Manis Kosambi Cikakak Village had practiced trade with Islamic Business Ethics. The Practice of Islamic Economy in the Traditional Market of Brebes Regency had been carried out by most traders almost 84.8%. The system of commerce with the islamic economy is rooted in and habutual practices with islamic business ethics, doing bussiness by selling clean products, honesty, openness, fair, and by backing out of riba, or loan shark has been accustomed by traditional merchants of Brebes Regency in Manis Kosambi market Cikakak Village of Brebes Regency

Keywords: Islamic Economic Traditional Market
The Organizational Communication Perspective Theory
Authors: Kristina
Published: July 2020

Public sector organizations are undergoing a transformation in management style. Not only is the behavior of government agencies increasingly being carried out like business, where managers play a central role, but aspects of client service are also becoming more important. Communication is input or message from one person to another. Organizations need communication to streamline their work and carry out tasks in a perfect way. Communication is the art of sending messages and receiving the same in the form of feedback. The success of an organization is highly dependent on effective organizational communication patterns. This study aims to understand communication in achieving the objectives of government organizations. Furthermore, this study discusses effective communication in government organizations.

Keywords: Organization Communication, Internal and External.
Clinicopathological Outcome in Infection Related Glomerulonephritis
Authors: Sanjay M  , Gopalakrishna P
Published: July 2020

Background: The term infection-related glomerulonephritis (IRGN) was proposed as the streptococcal, staphylococcal and gram-negative organisms were being isolated among elderly and immunocompromised patients treated for glomerulonephritis. Previously these were called as Post-infectious glomerulonephritis (PIGN). Most of the reported patients were Caucasians and Asians with male predominance. Among the adult IRGN patients a kidney biopsy is recommended to confirm the diagnosis and to rule out other glomerulonephritis. Aims & Objectives: To study the clinical characteristics and pathological patterns of infection-related glomerulonephritis (IRGN) in adults and to assess the clinical and pathological differences of C3 dominant and codominant IRGN patients. Subjects and Methods: A hospital-based, analytical retrospective clinical study was conducted among seventy-three patients. Cases were included irrespective of gender with biopsy proven IRGN and aged equal to or greater than 18 years of age. The study was conducted for a period of 6 months from 1st June 2019 to 30th Nov 2019 at Sapthagiri Institute of Medical Sciences and Research Center, Bangalore. A prior permission from the institutional ethics committee and written consent from the patients and their family members were obtained. Data obtained was entered in Microsoft Excel-2013 and analyzed in SPSS version-22 trial. Appropriate statistical tests were applied and p-value less than 0.05 was considered as significant. Results: In the present study 73 patients were included based on the selection criteria. The mean age of the study population was 41.8 ± 14.5 years. Majority 51 p.c (37) of study population were males and 49 p.c (36) were females. Hypertension was the most common risk factor which was reported among 56 p.c (32) of the patients. Diabetes was reported among 17 p.c (10) of the patients. About 15 p.c (9) of the patients were alcoholics and 10 p.c (6) of the patients were smokers. Conclusion: Renal biopsy plays an important role in the assessment of prognosis and underlying glomerular nephritis (GN).
Left Atrial Appendage (LAA) Function by Transesophageal Echocardiography before and after Percutaneous Balloon Mitral Valvuloplasty (PBMV)- A Comparative Study
Authors: Satyendra Kumar A  , Magesh B
Published: July 2020

Background: In the past, the left atrial appendage (LAA) has been considered to be a relatively insignificant portion of cardiac anatomy. It     is now recognized that it is a structure with important pathological associations. First, thrombus has a predilection to form within the LAA in patients with non-valvar atrial fibrillation and to a lesser extent in those with mitral valve disease (both in atrial fibrillation and in sinus rhythm). Second, the use of transoesophageal echocardiography has made clear imaging of the LAA possible, so that its size, shape, flow pattern, and content can be assessed in health and disease. Subjects and Methods: This study population consisted of 40 patients with symptomatic mitral stenosis who underwent percutaneous mitral balloon valvotomy in the cardiology department of GSL medical college, Rajahmundry over a time period of 1 April 2017 to 30 March2018. Patients in all age groups, with evidence of severe MS (MVA<1.0cm2) admitted in our institution, in whom PBMV was feasible were included. Those who were fulfilling the PBMV intervention criteria and those who had good results only were included. Results: Left atrial appendage late emptying velocity, LAALF: Left atrial appendage late filling velocity Spontaneous echocontrast (SEC) was present in 10 of the 40 patients before a procedure but completely disappeared (6 patients) or decreased (4 patients) after the procedure. LAALE & LAALF velocities measured by Doppler were increased significantly after PBMV and at 6 months follow up compared with baseline (P <0.001). Conclusion: Successful Percutaneous balloon mitral valvotomy decreases the intensity of spontaneous LA contrast, reduces the size of the LA, and improves LA and LAA function. Relief of MS may confer not only hemodynamic benefits for improvement of symptoms but also have a favorable influence on future thromboembolism.