bluuebunny/crossref_metadata_2025 huggingface dataset:
HIPERTENSÃO NA DOENÇA RENAL CRÔNICA EM TRATAMENTO CONSERVADOR
Authors:   Faculdade de Ciências Médicas - Universidade do Estado do Rio de Janeiro, RJ, Brasil., Parada Leite Larissa , Pessanha Cordeiro Giovanna ,   Faculdade de Ciências Médicas - Universidade do Estado do Rio de Janeiro, RJ, Brasil., Costa Monteiro Beatriz ,   Faculdade de Ciências Médicas - Universidade do Estado do Rio de Janeiro, RJ, Brasil., Aguiar de Oliveira Paulo Gustavo ,   Faculdade de Ciências Médicas - Universidade do Estado do Rio de Janeiro, RJ, Brasil., Pimenta de Mello Spineti Pedro ,   Faculdade de Ciências Médicas - Universidade do Estado do Rio de Janeiro, RJ, Brasil., Campos Magalhães Maria Eliane ,   Faculdade de Ciências Médicas - Universidade do Estado do Rio de Janeiro, RJ, Brasil., Gonçalves Campana Erika Maria ,   Faculdade de Ciências Médicas - Universidade do Estado do Rio de Janeiro, RJ, Brasil., Araujo Brandão Andréa ,   Faculdade de Ciências Médicas - Universidade do Estado do Rio de Janeiro, RJ, Brasil.
Published: January 2021

A hipertensão arterial sistêmica (HAS) afeta aproximadamente 30% da população geral no mundo industrializado e é uma das principais causas de doença renal crônica (DRC), caracterizada por função renal anormal ou danos estruturais renais com mais de 3 meses de duração. A sua presença classifica o paciente hipertenso como de alto risco cardiovascular (CV). O controle pressórico é fundamental para diminuir a sua progressão e reduzir o risco de morbidade e mortalidade CV. A meta pressórica recomendada deve ser menor que 130x80mmHg para a maioria dos pacientes com DRC. O tratamento não medicamentoso tem como base as mesmas recomendações dos demais pacientes hipertensos. A terapia medicamentosa combinada deve ser iniciada o mais breve possível. Além dos inibidores do sistema renina angiotensina aldosterona, conhecidos por sua eficácia na DRC, os diuréticos e os bloqueadores de canal de cálcio compõem o trio de ouro utilizado no tratamento da HAS, capazes de reduzir o risco cardiovascular e desacelerar a progressão da doença renal. Em conclusão, a DRC é um preditor de risco CV e a presença concomitante de HAS aumenta expressivamente esse risco. A utilização da estratégia terapêutica adequada para manter os níveis pressóricos dentro das metas é fundamental na atenuação da progressão da doença renal e do risco CV.
SIGNIFICADO CLÍNICO DA HIPERTENSÃO DURANTE O SONO
Authors:   Unidade de Hipertensão do Hospital das Clínicas da Faculdade de Medicina da USP de Ribeirão Preto, SP, Brasil., Nobre Fernando , Mion Júnior Décio ,   Hospital das Clínicas da Faculdade de Medicina da USP (HCFMUSP), São Paulo, SP, Brasil.
Published: January 2021

A anormalidade da pressão arterial durante o período de sono identificada como médias ≥ 120 x 70 mm Hg, por meio de registros da Monitorização Ambulatorial da Pressão Arterial de 24 horas (MAPA), está relacionada a pior prognóstico e maior risco de eventos. Essa alteração pode ser decorrência de vários fatores, mas, geralmente, independentemente da causa está fortemente relacionada a maior probabilidade de eventos e mortalidade cardiovasculares. Ainda restam dúvidas, embora evidências começam a ser oferecidas, se o tratamento medicamentoso desse estado de comportamento peculiar da pressão arterial nas 24 horas deva ser instituído. Nessa revisão esses aspectos são amplamente discutidos com base nas melhores evidências disponíveis.
DENSITY FUNCTIONAL THEORY STUDIES OF ELECTRONIC AND THERMAL PROPERTIES OF ZNSIP SEMICONDUCTOR
Authors: TRIPATHY S. K. , KUMAR V.
Published: January 2021

First principles calculation within density functional theory (DFT) has been used to calculate the electronic, optical and thermal properties of ZnSiP2 chalcopyrite semiconductor. The result of band structure, total density of state (DOS) and partial density of state (PDOS) have been discussed. The dielectric constant, refractive index, reflectivity, absorption coefficients, extinction coefficient and loss function have been presented in energy range of 0-25 eV. The values of melting point, Debye temperature, heat of formation and bulk modulus have been calculated. The calculated values of these parameters are in good agreement with the experimental values and the value reported by previous researchers.
MULTI-CHANNEL IMAGE SOURCE SEPARATION BY DICTIONARY UPDATE METHOD
Authors: SUGUMAR D. , THOMAS ANJU , VANATHI P. T
Published: January 2021

In real world, a large set of mixed signals are available from which each source signal need to be recovered and this problem can be addressed with adaptive dictionary method. In the case of multichannel observations sparsity found to be very useful for source separation. The problem exist is that in most cases the sources are not sparsified in their domain and it will become necessary to sparsify the source by using some known dictionaries. In order to recover the sources successfully a prior knowledge of the sparse domain is required, if not available this problem can be solved by using dictionary learning technique into source separation. The proposed method, a local dictionary is adaptively learned for each source separately along with separation. This approach improves the quality of source separation both in noiseless and different noisy situations. The advantage of this method is that it denoise the sources during separation.
RATE COMPATIBLE PUNCTURED TURBO-CODED HYBRID ARQ FOR OFDM SYSTEM
Authors: DHAMOLE DIPALI P. , DESHMUKH ACHALA M.
Published: January 2021

Now a day’s orthogonal frequency division multiplexing (OFDM) is under intense research for broadband wireless transmission because of its robustness against multipath fading. A major concern in data communication such as OFDM is to control transmission errors caused by the channel noise so that error free data can be delivered to the user. Rate compatible punctured turbo (RCPT) coded hybrid ARQ (RCPT HARQ) has been found to give improved throughput performance in a OFDM system. However the extent to which the RCPT HARQ improves the throughput performance of the OFDM system has not been fully understood. HARQ has been suggested as a means of providing high data rate and high throughput communication in next generation systems through diversity combining transmit attempts at the receiver. The combination of RCPT HARQ with OFDM provides significant bandwidth at close to capacity rates of channel. In this paper, we evaluate by computer simulations the throughput performance of RCPT code HARQ for OFDM system as compared to that of conventional OFDM.
GEOMORPHOLOGY AND ECOLOGICAL SERVICES AS THE FOUNDATIONS OF THE INTEGRATED COASTAL PLAIN MANAGEMENT IN ICAPUÍ, STATE OF CEARA, BRAZILIAN NORTHEAST
Authors: ANTONIO JEOVAH DE ANDRADE MEIRELES  , WALLASON FARIAS DE SOUZA  , ANDRÉ LUIZ BRAGA SILVA  , ANA PAULA DA SILVA LIMA  , JOSÉ DE ARIMATEA DA SILVA
Published: January 2021

Foi possível constatar um ritmo crescentes e contínuos da erosão costeira entre os anos de 1985 e 2018. De a erosão demostrar uma certa convergência com as previsões do IPCC (2019), e como a primeira e segunda décadas amostradas o litoral apresentou pontuais intervenções humanas, o ecossistema manguezal foi bastante alterado. E, dessa forma, não foi possível afirmar com maior segurança a relação da erosão costeira e a salinização do lençol freático com a subida do nível do mar. Entretanto, devido recuos da linha de costa em até 150 metros (destruição de moradias na última década), é extremamente prudente utilizar os dados da pesquisa devido demostrar a erosão contínua em praias arenosas e rochosas e na base das falésias vivas. A salinização do aquífero, pelo menos, foi intensificada nos últimos 25 anos. Os componentes do relevo da planície costeira foram analisados de modo a vincular os processos morfológicos aos ecossistemas. O resultado de 13 oficinas realizadas com 34 comunidades de pescadores e camponesas, evidenciou os vínculos dos processos geomorfológicos e ecológico com o modo de vida comunitários, etapa que definiu os serviços ecológicos da planície costeira, importantes para a gestão costeira integrada de Icapuí, Ceará, Nordeste do Brasil.
Physical Properties, Chemical Composition and Nutritional Quality Potentials of Lonchocarpus sericeus (Cube root) Seeds and Seed Oil
Authors: OYEDEJI Abdulrasaq Olalekan , ODEYEMI Bibilomo , ADEWUYI Sulaimon , AZEEZ Luqmon
Published: January 2021

Physical properties, chemical composition, and nutritional quality potentials of the seeds of Lonchocarpus sericeus (cube root) were investigated. The water absorption properties of the seeds were measured both gravimetrically as hydration capacity (0.02±0.005 g/seed), and hydration index (0.06±0.01) and volumetrically as swelling capacity (0.01±0.00 mL/seed) and the swelling index   (1.2x10-4±0.00). A 100 g of seeds contained 17.53±2.08, 38.83±4.16, 3.18±0.19, 24.93±3.21, 29.96±3.82, and 3.10±0.89 g moisture, crude fiber, ash, crude fat, crude protein, and nitrogen-free extract (NFE), respectively; Further, the sample had per 100 g 149.20±0.24 kJ gross energy, 848±16.1, 722±10.0, 720±9.1, 230±8.2, and 224±8.1 mg Fe, Mn, Zn, Cu, and Na, respectively. The seed also contained 3.14±0.12, 2.18±0.32 and 4.30±0.06 mg/g tannin, oxalate, and saponin, respectively. The essential-to-total amino acid ratio (E/T, %) was 44.10 %; the average predicted protein efficiency ratio (PER) was 2.70, while the predicted biological value (BV) was 34.85. Elaidic acid was the most significant fatty acid (46.32 %) found in the seeds with a total saturated and unsaturated fatty acids of 46.14 and 50.50 %, respectively. The oil of L. sericeus was equally rich in bioactive compounds, including tocopherols, sterols, phospholipids, tocotrienols, and terpenoids with a concentration of 50.09, 479.13, 333.14, 1.34, and 3.33 x 10-4 mg/100g, respectively. L. sericeus seed can be a potential source of dietary energy, industrial oil, bioactive compounds, and vegetable protein.
Evaluation of the performance and concordance of Fibroscan and the APRI score in patients with chronic hepatitis C
Authors:   Faculté de Médecine, Université de Batna 2 – Algérie, Kalla Nabila , Aouidane Souhila , Megaache Faiza , Tebbal Soraya
Published: January 2021

Introduction. Plusieurs méthodes non invasives d’évaluation de la fibrose ont été développées qui ont prouvé leur intérêt en cas d’hépatite virale chronique C. L’objectif de cette étude est d’évaluer la performance diagnostique de la fibrose par le Fibroscan et le score APRI en les comparant à la biopsie hépatique chez les patients atteints d’hépatite virale chronique C dans la wilaya de Batna. Matériels et Méthodes. Une étude descriptive d’observation de 72 patients atteints d’hépatite C chronique, confirmés par une PCR, ont bénéficié d’une évaluation de la fibrose hépatique par le Fibroscan, le score APRI et la biopsie hépatique. Les valeurs de coefficient Kappa ont été utilisées pour évaluer le degré d’accord entre ces examens. La performance diagnostique de Fibroscan a été évaluée par la mesure des aires sous la courbe ROC (AUROC) et la valeur seuil optimale. Résultats. L’âge moyen de ces patients est de 56,35 ± 8,63 ans. Un sex-ratio (H/F) de 0,47. La moyenne de l’élasticité de ces patients est de 16,08 ± 9,99 Kpa, allant de 4,30 Kpa à 46,40 Kpa. Les résultats de l’analyse de la concordance ont montré un accord modéré significatif entre le Fibroscan et la PBH avec un Kappa à 0,597, P < 0,001. Les AUROC pour le Fibroscan/ le score APRI pour le diagnostic de fibrose significative (F ≥ 2), sévère (F ≥ 3) et de cirrhose (F = 4) sont 0,924 (0,863 - 0,986) / 0,710 (0,578- 0,842) ; 0,923 (0,848-0,999) / 0,804 (0,702- 0,906) ; 0,924 (0,855 - 0,992) / 0,878 (0,800 - 0,956) respectivement. Les seuils optimaux de l’élasticité pour la fibrose significative (F ≥ 2), sévère (F ≥ 3) et de cirrhose (F = 4) sont 9,9 Kpa, 11,6 Kpa, 15,3 Kpa respectivement. Conclusion. Dans notre série, le Fibroscan reste l’examen le plus performant dans le diagnostic de la fibrose hépatique quel que soit son degré.
GENES BRCA1/2: two polymorphic variants associated with a high risk of ovarian cancer
Authors:   Laboratoire de Biochimie. Faculté de médecine Benyoucef Benkheda Alger 1 – Algérie., Habak Nawal , Ait Abdallah Malika , Chikouche Ammar , Ait Abdelkader Belaid , Griene Lakhdar
Published: January 2021

Introduction. Les mutations délétères (classe 5) des gènes BRCA1 et BRCA2 sont des mutations inactivatrices, qui entraînent une perte de la fonction de la protéine. Ces mutations constitutionnelles entrainent une augmentation du risque tumoral de cancer du sein et /ou de cancer de l’ovaire. Dans certaines situations la présence simultanée de deux variants de classe 1 (POLYMORPHISME) des gènes BRCA1 et ou BRCA2, sont responsables d’une augmentation du risque tumoral ovarien. Matériels et Méthodes. Nous avons réalisé le test génétique BRCA1 et BRCA2 par séquençage direct Sanger ; chez 88 cas index de cancer familiaux sein et ou ovaire provenant de tout le territoire national. Résultats. Trois situations d’association de variants polymorphes de classe 1 ont été identifiées. Il s’agit de l’association des deux polymorphismes : (c.2612C>T ; p.Pro871Leu) et (c.1067A>G ; p.Gln356Arg). Conclusion. Cette association dangereuse de variants polymorphes doit être prise en considération par le clinicien afin d’assurer une surveillance étroite, adaptée, dans le but d’un diagnosticprécoceducancerdel’ovaire ou de proposer une chirurgie ovarienne prophylactique aux femmesquiportentcesvariations.
Prevalence of hepatitis C virus infection in the general population of the city of Barika
Authors:   Faculté de Médecine, Université de Batna 2 – Algérie, Kalla Nabila , Aouidane Souhila , Megaache Faiza , Tebbal Soraya
Published: January 2021

Introduction. L’hépatite virale C pose un réel problème de santé publique à l’échelle mondiale. En Algérie, sa prévalence est modérée, mais il existe une variabilité géographique dans sa distribution, la willaya de Batna est endémique pour la pathologie. Le dépistage précoce de cette pathologie permet de réduire la morbidité et la mortalité liées à la cirrhose et au carcinome hépatocellulaire. Notre objectif est de déterminer la prévalence de l’hépatite C dans la ville de Barika par la réalisation d’un dépistage dans la population générale. Matériels et Méthodes. Une étude descriptive transversale de prévalence de l’hépatite virale C dans la ville de Barika à la wilaya de Batna par la réalisation d’une campagne de dépistage de l’hépatite C dans la population générale. Ce dépistage a été organisé pendant 10 jours en mois de mars 2015. Les personnes qui ont été concernées par ce dépistage sont les patients et leurs accompagnateurs qui transitent par les consultations de la polyclinique centrale de Barika pour d’autres pathologies que l’hépatite virale C. Le dépistage a été réalisé par un test rapide immuno-chromatographique sur bandelette (les tests rapides d’orientation diagnostique (TROD)). Un test ELISA de confirmation a été réalisé sur les prélèvements positifs. Résultats. 413 personnes ont été dépistées (114 hommes et 299 femmes), Le test rapide d’orientation diagnostique était positif chez 27 patients, soit une prévalence de 6,5 %. La plupart des patients séropositifs sont des femmes (77,8%). Cette prévalence est plus élevée chez les femmes (7,02%) que chez les hommes (5,26%). La tranche d’âge 60-69 ans est la plus touchée 40,70 %, la séroprévalence dans cette classe d’âge est de 12,79%. Toutes les personnes dépistées séropositives au VHC ont eu un prélèvement sanguin à la recherche de l’ARN VHC par PCR, La PCR VHC est revenue indétectable chez deux patients. Conclusion. Notre campagne de dépistage anonyme et gratuit de l’hépatite virale C a objectivé une estimation de prévalence de l’infection par le VHC dans la ville de Barika à 6,5%, ce qui a situé notre région dans une zone de forte endémicité de l’infection par le VHC
Epidemiology of Celiac Disease worldwide
Authors:   Service de pédiatrie. Centre de consultations spécialisées de l’armée. Hussein Dey Alger, Ait Idir Karim
Published: January 2021

L’optique épidémiologique de la maladie cœliaque a changé. Jadis considérée comme maladie pédiatrique rare, elle devient de plus en plus fréquente de nos jours. Sa prévalence peut atteindre 3 % dans certains pays, et son incidence s’est multiplié par 6 ces dernières années. La consommation de gluten sur un terrain prédisposé, un terrain d’auto-immunité et les aberrations chromosomiques constituent des facteurs de risque de développement de la maladie cœliaque. L’approche épidémiologique se base soit sur les sérologies cœliaques et/ou sur l’étude histologique des biopsies duodénales. La difficulté des études statistiques est surtout liée aux formes atypiques et silencieuses, même si actuellement elles sont mieux décryptées
Medicines derived from biotechnology / Biosimilars in Morocco: economic and regulatory aspect
Authors:   Laboratoire de chimie thérapeutique. Faculté de médecine et de pharmacie Rabat - Maroc, Ifezouane Jihane , Berdi Fadoua , El Marrakchi Soufiane ,   La Direction du Médicament et de la Pharmacie Rabat - Maroc, Lamsaouri Jamal
Published: January 2021

Les biomédicaments permettent un meilleur accès au traitement spécialement pour les affections de longue durée (cancer, diabète, maladie de sang,…) leur marché représente un enjeu important pour l’industrie pharmaceutique, Les brevets de certains biomedicaments arrivent déjà à échéance, ouvrant la voie à d’autres fabricants pour mettre sur le marché des produits dits biosimilaires qui sont moins chers que les biomedicaments de référence et ils peuvent ainsi représenter une source d’économie importante pour les système de santé. Les processus de développement et de fabrication de ces biosimilaires sont plus complexes et plus coûteux que ceux des génériques de médicaments chimiques et expliquent en dernier lieu les grandes différences de prix entre ces deux types de médicaments. Les biosimilaires ne peuvent pas être exactement identiques aux biomédicaments de référence mais ils ont un profil de qualité, d’efficacité et de sécurité similaire à celui–ci, et la démonstration de la similarité nécessite de nouveaux essais précliniques et cliniques. Au Maroc, un nouveau décret vient poser un cadre réglementaire garantissant l'autorisation de produits comparables à la référence, sûrs et efficaces Toutefois, la question de l’interchangeabilité reste posée dans la mesure où ces produits présentent des variabilités de l’un à l’autre.
Managment of type 2 diabetes. Update
Authors:   Faculté de médecine et de pharmacie-Rabat-Maroc, Berdi Fadoua , Ifezouane Jihane , Tadlaoui Yasmina , Zakariya Imane , Lamsaouri Jamal
Published: January 2021

Introduction. Le diabète est un problème de Santé publique qui intéresse le monde entier, de par sa fréquence, son caractère ubiquitaire, ses conséquences à long terme, ainsi que le coût du traitement. Deux types de diabète sont connus, le diabète de type 1 et le diabète de type 2. L’objectif de notre travail est une mise au point des stratégies thérapeutiques du diabète de type 2. Méthodes. Une recherche bibliographique a été réalisée sur les nouvelles stratégies thérapeutiques adoptées. L’ensemble des résultats de recherche a été étudié afin de faire une synthèse sur l’actualité pour la prise en charge du diabète type 2. Résultats. L'activité physique, l'alimentation et l'éducation restent les pierres angulaires du traitement du diabète de type 2 tout au long de l'évolution. Quand l'objectif fixé n'est pas atteint avec ces moyens simples, un traitement médicamenteux doit être introduit. L’approche thérapeutique consiste à Stimuler la sécrétion d’insuline, Favoriser l’utilisation périphérique du glucose et diminuer sa production hépatique, Réduire la résorption intestinale des hydrates de carbones. Plusieurs molécules sont proposées, le choix du traitement thérapeutique repose sur plusieurs critères, notamment, le terrain du patient, son âge, les comorbidités et le traitement associés. Conclusion. Une des nouveautés qui apparaissent dans la prise en charge du diabète est la multiplicité des choix thérapeutiques, ce qui impose une réévaluation systématique de la réponse individuelle au traitement. Le pharmacien a un rôle à jouer dans l’amélioration de la qualité de vie du diabétique par son implication dans le suivi du traitement et les règles d’hygiène de vie
Construir culturas de colaboración eficaz en redes de escuelas chilenas: una teoría de acción
Authors: Rincón-Gallardo Santiago , Villagra Carolina , Mellado María Elena , Aravena Omar
Published: January 2021

En este artículo se explora el rol que pueden jugar facilitadores externos en la construcción de culturas de colaboración profesional eficaz en redes de escuelas. En particular, se enfatiza su rol como “amigos críticos” para favorecer el cambio cultural que supone la colaboración profesional eficaz. Se presenta un estudio de caso que describe la experiencia de acompañamiento a diez redes de directivos escolares en La Araucanía chilena por parte de un centro de desarrollo de liderazgo de la región. Se reconstruye la historia y evolución de la estrategia de acompañamiento a estas redes a través del análisis documental de reportes de las sesiones formales del trabajo de las redes, encuestas y entrevistas con líderes escolares, comunales y regionales que participan de las jornadas de red, así como de conversaciones con el equipo de académicos que diseñó y dio acompañamiento a las redes de directivos escolares entre mayo de 2016 y diciembre de 2018. Se delinea, además, una teoría de acción organizada en siete principios de acción que se proponen para construir culturas de colaboración eficaz en redes de escuelas.
La educación socialista en Yucatán: una aproximación general al estado de la cuestión
Authors: Espadas Sosa Freddy Javier
Published: January 2021

El trabajo pretende ser un balance general sobre el estado que guarda la historiografía educativa en Yucatán durante el periodo cardenista (1934-1940). A partir del análisis de una parte significativa de la producción existente sobre dicha etapa, el texto tiene por objetivos ofrecer una visión panorámica sobre los conocimientos relevantes que se han alcanzado sobre la historia de la educación en el lapso señalado, así como plantear algunos desafíos e interrogantes a los que se enfrentan los historiadores de la educación, toda vez que dicha revisión permitió identificar los grandes faltantes que necesitan ser atendidos por los investigadores interesados en el periodo de referencia.
Abandono estudiantil en el Sistema Universidad Abierta y Educación a Distancia. Un estudio diagnóstico
Authors: Pérez Ornelas María Isabel
Published: January 2021

El Sistema de Universidad Abierta y Educación a Distancia (SUAyED) de la UNAM ofrece estudios superiores a población que, por diversas circunstancias, se le dificulta asistir a clases diariamente, o estar en un aula por tiempos prolongados. Este sistema plantea un modelo educativo innovador y flexible; no obstante, como en el sistema escolarizado, se enfrenta al abandono de la licenciatura en los primeros semestres. En el caso concreto del SUAyED de la Facultad de Economía se ha realizado un estudio diagnóstico de la Generación 2011-1 para identificar factores de abandono de esta carrera. Para esto se diseñó una encuesta de 29 preguntas distribuidas en 12 ejes con diversos asuntos que recogieran información institucional, pero también personal y de percepción del alumnado. En este estudio, el abandono se conceptualiza desde la percepción de la integración, porque el propósito es ubicar los factores que llevan al alumnado a dejar sus estudios universitarios, para avanzar en el entendimiento del fenómeno.
Análisis de la concepción de docentes y estudiantes sobre el juego como recurso didáctico para el aprendizaje: experiencia en la educación primaria
Authors: Melo Herrera Mónica Patricia
Published: January 2021

El juego ha sido concebido socialmente como una actividad con la cual se gasta energía y se pasa el tiempo, sin tener en cuenta su carácter potenciador del aprendizaje. El presente artículo tiene como objetivo identificar y reflexionar sobre la concepción que docentes y estudiantes tienen respecto al juego como recurso didáctico en los procesos de enseñanza y aprendizaje. Se tienen como base los resultados de una encuesta utilizada en el marco de un trabajo de investigación de corte cualitativo sobre el desarrollo de habilidades comunicativas en un colegio de la ciudad de Bogotá. Para su estudio se diseñaron categorías de análisis emergentes basadas en los objetivos de la investigación. Estos resultados mostraron que docentes y estudiantes valoran el uso del juego como actividad para promover el aprendizaje, pero no se emplea debido a la percepción que se tiene del mismo. Insumos de este trabajo se han empleado para la investigación del nivel doctoral sobre interculturalidad en la escuela.
Metodologías interculturales y decoloniales: inclusión de las tradiciones discursivas originarias y rurales en la didáctica de la lengua
Authors: López Ibarra Fabiola
Published: January 2021

La Dirección de Educación Migrante Jalisco es una institución que depende de la Secretaría de Educación Pública en México. El objetivo del programa es dar atención educativa de calidad a los niños, niñas y adolescentes hijos de familias agrícolas migrantes internas en diversos estados de dicho país. En Jalisco, la atención educativa ha presentado una serie de problemáticas relacionadas con las competencias comunicativas, para ello se ha diseñado una propuesta de intervención pedagógica para lengua oral y escrita en cuatro fases de trabajo. Bajo un enfoque intercultural se fomenta la lengua oral y escrita en contextosdonde las culturas orales predominan. El objetivo es construir situaciones de aprendizaje donde, a partir de la oralidad, se realice la identificación de discursos diferentes a los de las tradiciones discursivas escolares para adherirlos al currículo. Esta metodología, si bien no es bilingüe por los fenómenos de desplazamiento lingüístico de los alumnos, es intercultural ya que retoma cuestiones iconográficas-simbólicas y discursivas de los pueblos de origen de los niños migrantes, así como el rescate de la memoria colectiva y ancestral a partir de diversos tópicos detonantes.
Tejiendo nuevas narrativas: los retos de hacer presente la voz de las tejedoras en los centros textiles en México y Perú
Authors: Ojinaga Zapata Brenda Cecilia
Published: January 2021

Los tejidos tradicionales han sido una herramienta primordial para la construcción de la memoria grupal. El carácter colectivo de los tejidos evoca lo vivido y aprendido por generaciones de tejedoras herederas de un arte en resistencia. La investigación se concentró en los centros textiles surgidos a finales del siglo pasado en Perú, y posteriormente en México, como espacios culturales y museísticos donde algunas tejedoras se han integrado como parte de equipos interculturales. Su objetivo es reflexionar en cómo al hacerse presentes las voces de las tejedoras en lugares en los que históricamente han sido expulsadas, se cuestionan los modos en que se ha estudiado el arte popular, así como el creado por mujeres, a quienes no se acostumbra a ver como impartidoras de conocimiento fuera de su comunidad. Con un enfoque basado en la teoría latinoamericana del arte y un trabajo etnográfico que incluye testimonios y entrevistas a las mujeres que forman parte de los centros textiles en México y en Perú, este trabajo busca ser un aporte al reconocimiento y valoración de distintas formas de creación y aprendizaje que son parte de las sociedades diversas y plurales que integran América Latina.
New methods for long storage of raw sugar products
Authors: Iztayev A. I. , Маyемеrоv M. M. , Yakiyayeva M. A. , Zhakatayeva A. N. , Моldakarimov A. A. , Muldabekova B. Zh.
Published: January 2021

The article examined the use of electrophysical methods, including ozone treatment in the cavitation zone for storing sugar beets. Experimental studies of samples of sugar beet from the Koksu sugar factory of the second degree of infection showed that ozone-cavitation treatments have a pleasant effect on long-term storage. As a result, it was proved that treatment with an ozone concentration of 8 g/m3 for 20 minutes at an overpressure of up to 5 ati is the most optimal mode.
Ensuring long storage of raw sugar products using electrophysical installation
Authors: Yakiyayeva M. A. , Zhakatayeva A. N. , Iztayev A. I. , Маyемеrоv M. M. , Muldabekova B Zh.
Published: January 2021

The article examined the efficiency of using an electrophysical installation to ensure the long-term storage of raw sugar products. Experimental studies of sugar beets of the second degree of infection of the Koksu sugar factory. As a result, it was found that in order to increase the shelf life of sugar products, the most optimal regimen is treatment with ozone with a concentration of 8 g/m3 for 20 minutes and an overpressure of 3 or 5 ati.
Extraction of fruit and berry raw materials for the production of beer for special purpose
Authors: Kekibayeva A. K. , Kantay A. A. , Baygaziyeva G. I.
Published: January 2021

Currently, the expаnsion of the rаnge of the brewing industry is possible due to the introduction of аn unconventionаl type of plаnt rаw mаteriаls in the technology, which will аllow producing speciаl -purpose drinks with certаin quаlity indicаtors. The main objective of the study is to determine the concentration of the extractant that allows extracting the maximum number of target components, optimal extraction parameters, and to evaluate the effect of pretreatment with enzyme preparations on the properties of fruit and berry raw materials. Studies have shown that solutions with an alcohol concentration of 60% vol. allow to increase the yield of alcohol and water-soluble substances. However, in order to obtain dyes from fruit and berry raw materials, it is recommended to use an extractant with a strength of 75 %, which extracts anthocyanin compounds to a greater extent.
Research of extruded products with protein filling
Authors: Сhomanov U. Ch. , Zhumalieva G. E. , Tultabayev M. Ch. , Aktokalova G. S. , Kassimbek R. K.
Published: January 2021

In this paper, we examine extruded products with protein filling, obtained with different particle size of crushed grains. It was found that the physical-chemical and organoleptic parameters of finished products differ slightly from each other. It is noted that the optimal sample is a product with a particle size of 1.0 mm.
Training of robotic-assisted radical prostatectomy, experiences of 100 cases
Authors: Vu Le Chuyen ,   Nguyen Phuc Cam Hoang, Nguyen Van An, Tran Vinh Hung, Nguyen Ngoc Chau, Do Lenh Hung
Published: January 2021

Abstract

Introduction: The application of robotics in endoscopic techniques becomes commonly in Vietnam. The transition from conventional surgery and laparoscopy to robotic-assisted endoscopy has its own difficulties and advantages. We summarize the experiences of training this procedure through 100 prostate cancers treated by robotic-assisted laparoscopic surgery in the Urology Department, Binh Dan Hospital, from December 2016 to June 2018.

Material and Methods: This was a clinical comparative and vertical study. 100 patients diagnosed prostate cancer, staged T1 to T3 were performed robotic-assisted radical prostatectomy (RARP), with or without nerve sparing and local pelvic lymph nodes dissection. The comparison of 5 groups of surgeons, two phases with 50 cases each was conducted.

Research variables: Stages of cancer, pre and postoperative PSA levels, Gleason score, lymph node metastases, estimated blood loss, surgery duration, urinary incontinence, hospitalization stay and complications are enrolled .

Results: Five surgeons A, B, C, D, E had 38,22,18,14 and 6 cases respectively. The mean age, PSA and cancer stage were statistically similar (p> 0,3). The surgery duration were 176.81, 274.77, 231.88, 286.92 and 272.50 minutes, respectively, which was statistically different (p <0.01). Mean blood loss were 404.62, 476.64, 370, 244.62, 462.50 ml, which was statistically different (p <0.01). 15 cases needed blood transfusion. Hospitalization was 5.42, 11.14, 4.94, 6.31, 7 days, which was not statistically similar among groups (p <0.05), but had a statistically significant relationship with drainage duration and complication rate of each group (p <0.01). The second phase of the study significantly improved in surgery duration from 270 to 214.65 minutes compared to the first phase. Mean blood loss increased from 361.60 to 427.44 ml although the average PSA decreased from 42.84 to 35.72 ng/ml. Lymphadectomy in the first half was 22/50 and in the second half was 29/50. The learning curve of the operation duration reached after 20 cases, however there was little improvement afterwards. More members of surgical team had, more standard deviation of surgical duration was.

Conclusion: By studying the training of robotic-assisted radical prostatectomy at Binh Dan Hospital we found that surgery could be safely with acceptable complications. Optimal learning curve for surgical duration was achieved at the first 20 cases. Training needed to have a procedure in place to replicate the number of surgeons without compromising the overall outcome.
Transanal total mesorectal excision for patients with middle-low rectal cancer in locally advanced stage
Authors: Ho Huu Thien ,   Phan Hai Thanh, Nguyen Thanh Xuan, Van Tien Nhan,Tran Nghiem Trung, Pham Trung Vy, Pham Xuan Dong, Mai Trung Hieu, Vu Hoai Anh, Pham Nhu Hiep
Published: January 2021

Abstract

Introduction: Patients with middle-low rectal cancer in advanced stage had many difficulties in performing laparoscopic total mesorectal excision (TME), especially in those with narrow pelvis or obese with or without neoadjuvant therapy. We conducted the study of transanal TME (TaTME) for these patients to evaluate the safety and efficacity of this technique.
Material and Methods: Prospective study. Patients with middle-low rectal cancer in advanced stage underwent rectal resection with TaTME technique were enrolled.

Results: 38 patients including 25 middle and 13 low rectal tumors underwent elective rectal resection by TaTME from March 2015 to September 2018. Male/female ratio: 25/13. Mean age: 58.2 ± 16.4 and BMI: 24.2 ±2.5 kg/m2.

Mean operation duration:210 ± 42 minutes. Specimen were removed through abdominal incision in 23 patients and 15 via anus. Anastomoses were performed by hands in 100% patients. The protective ileostomie was performed 100%.

One left ureteral burning and postoperative difficulty in voiding, one presacral abscess due to anastomotic fistula and one totally leakage of the anastomose. Good Quirke assessment in 87% patients. The distal resection margins (DRM) was 20 ± 5 mm. Distal resection margins (DRM) were negative in 100% patients and circumferential resection margins (CRM) were positive in one (2.6%) patients. The hospital stay was 6 days.

Median follow-up time was 12 months. One patient had local recurrence at 18th months and 1 had liver metastasis at 6th months.

Conclusion: TaTME for patients with middle-low rectal cancer in advanced stage is safe and efficacious. However, there is a need for large, multicentric studies to accurately evaluate this technique.
Asian Economic Crisis, Foreign Direct Investment and Stabilized Economic Growth: Crisis Revisited and Implications for APEC Member Ecomomies
Authors: Moon Hwy-Chang , Bark Taeho
Published: January 2021

The Asian economic crisis of 1997 gives us a valuable lesson that foreign direct investment (FDI) can play a more important role in promoting economic stability than other capital flows such as bank lending and portfolio equity investment. This paper explains the relationships between FDI and the crisis. Specifically, it studies the role of FDI in stable economic growth. Recent developments of inward FDI policies by the Asian member economies of APEC are then analyzed, after which they are categorized into four groups within a framework that is developed in this paper. Some important, generalized implications for FDI policies are also provided.
The Geography of Foreign Direct Investment: A Tripartite Framework
Authors: van den Berghe Douglas , van Tulder Rob
Published: January 2021

Patterns in Foreign Direct Investment (FDI) over the 1990s reveal three internationalization strategies: classic internationalization, emerging internationalization and competitive internationalization. The evolving tripartite framework enables to position internationalization strategies, FDI theories and, a number of emerging issues related to FDI and globalization in their geographical context. The three internationalization strategies simultaneously shape, although not necessarily to the same extent, nor in a similar fashion, current globalization. Driven by ‘regionalism’ among homogeneous blocks (in particular among the European Union member states and between the EU and the United States) ‘competitive internationalization’ is arguably the most salient feature of globalization at the end of the 20th century.
Property Rights in Common, from Communes to Town and Village Enterprises in Rural China
Authors: Cone Malcolm , Tian Zhilong , Everett André
Published: January 2021

The paper is an investigation of the emergence of town and village enterprises (TVE) in rural China. Part one investigates the antecedents of the TVE phenomenon, adopting the dual perspectives of macro economic policy (especially the household responsibility system) and the role of culture as explanatory paradigms. Part two is a case study of a successful TVE that shows the effects of economic policies and culture on a single organization in rural Hubei Province.
The Interaction Effect of Diversification Strategy, Entry Mode, and Implementation Mechanism on Corporate Performance: The Korea Case
Authors: Park Ki-Sung
Published: January 2021

This paper analyzes the effect that the implementation mechanism of a diversification strategy and mode has on business performance. More specifically, it examines the interaction effects of diversification strategy, mode and implementation on business performance, with a view to figuring out the optimal combination of the three factors of diversification. The result of this study indicates that different diversification strategies and modes require different implementation mechanisms and that only the most relevant combination of the three factors can create the highest performance.
International Business Activity and Firm Value: The Impact of Ownership and Capital Structure
Authors: Thomsen Steen
Published: January 2021

Theoretically, the effect of international business activity on firm value depends on ownership and capital structure. Companies may over-invest in international business activity because of agency problems or under-invest, if they are capital-rationed. This paper examines how these competing hypotheses fit a sample of 237 very large European and US companies over the period 1991-1997. The results indicate that internationalization may sometimes destroy value from a shareholder viewpoint and that financial leverage may have a negative effect on value creation by internationalization whereas the effects of ownership concentration on value gains from internationalization were found to depend on system effects. However, the magnitude of the effects is small, and the results were found to be sensitive to estimation methods.
A Formal Modeling of the Imbalance Theory to Explain Two Directions of Foreign Direct Investment
Authors: Moon Hwy-Chang
Published: January 2021

Foreign direct investment (FDI) has two directions - downward and upward. Traditional FDI theories explain downward FDI, but not upward FDI. This paper introduces a new model, the imbalance theory, which explains both downward and upward FDI. The new theory deals with the balance of both ownership advantages and disadvantages, while the traditional theories mainly focus on ownership advantages in the decision of FDI. For a formal modeling of the imbalance theory, this paper explains the relationship between the optimal input and optimal output. The imbalance theory then explains and predicts FDI when there is a difference between a firm’s expected level of optimal output for the best factor-proportion and its actual level of output.
Economic Integration and Manufacturing Location in EU Accession Countries
Authors: Longhi Simonetta , Nijkamp Peter , Traistaru Iulia
Published: January 2021

This paper investigates patterns of manufacturing location in the context of increased economic integration in European Union accession countries. Using regional data for the period 1990-1999, we identify and compare patterns and determinants of manufacturing location in five countries: Bulgaria, Estonia, Hungary, Romania and Slovenia. Our research results indicate that factor endowments and geographic proximity to large markets determine the location of manufacturing in these countries.
The Dynamic Relationship between FDI and Wages: Evidence from the People's Republic of China
Authors: Ramasamy Bala , Yeung Matthew
Published: January 2021

The objective of this paper is to evaluate the relationship between FDI and wage rates using the wellestablished Granger causality method but with a panel data setting. The paper considers the dynamic relationship between these two variables for 27 provinces over the 1985 – 2000 period. We also distinguish between the coastal and inland provinces. Results indicate that Granger causality runs from FDI to wages for the coastal provinces but no significant relationships are found for the inland provinces. These results imply that FDI is a contributing factor for increasing wage rates in China. In particular, our findings show that the “cheap labour” hypothesis does not apply for China. It further indicates that increasing inflow of FDI into the coastal provinces relative to the inland provinces exacerbate the unequal distribution of wealth between the regions.
A Comparison of the Financial Characteristics of U.S., U.K., German, and French Manufacturing Firms
Authors: Meric Ilhan , Prober Larry , Kim Joe , Meric Gulser
Published: January 2021

This article compares the financial characteristics of U.S. firms with the financial characteristics of U.K., German, and French firms in four major manufacturing industries by using the MANOVA (Multivariate Analysis of Variance) method with data for the January 1997-December 2001 period. The findings indicate that the financial characteristics of U.S. and European manufacturing firms are significantly different. The most significant differences are between U.S. firms and German firms. U.S. firms are generally more profitable and they have lower return-on-equity volatility risk in comparison with European firms.
Cultural Change in the United States, Canada and Mexico
Authors: Jenner Steve , MacNab Brent , Brislin Richard , Worthley Reg
Published: January 2021

A great number of studies have been reported based on Hofstede’s seminal work on national culture (1980). Our findings for a very recent sample of people attending executive and MBA programs found no significant differences in Power Distance between the United States (U.S.), Mexico and Canada. Our results suggest that caution should be taken in automatically assuming cultural parity between the U.S. and Canada and that more traditional culture positions between the NAFTA member nations may be more subject to change than stable through phenomena like crossvergence. Our findings suggest that Hofstede’s (1980) study provides one useful framework; however, the relative positions of national culture are not necessarily applicable to present day.
Inequality in Globalization: An Extension of the Gini Index from the Perspective of National Competitiveness
Authors: Kim Min-young
Published: January 2021

This article studies the unequal distribution of the benefits a country enjoys from participating in globalization from the perspective of international business. As globalization is a set of mutually beneficial interactions between countries and MNCs to enhance competitiveness of each participant, benefits countries enjoy from globalization should be understood in terms of national competitiveness. In this light, this article applies the generalized double diamond (GDD) model to the analysis of national competitiveness and introduces the globalization inequality index (GII) as an extension of the Gini index to measure inequality in globalization. Statistical analyses of GIIs show that benefits from globalization are unequally distributed over countries and suggest a need for the strategic interpretation of the role of a location in the era of globalization.
The Evolution and the Prospects of Contemporary Financial Instruments in Greece: The Case of SWAPS
Authors: Agorasti Olympia , Blanas George , Golemis Pavlos
Published: January 2021

This paper presents the results of a survey of derivatives and especially of swaps usage in the Greek market. Dividing the sample to Greek companies and Greek institutional investors, we find that institutional investors use derivatives much more than companies. In particular we find that 100% of institutional investors use derivatives when the corresponding percentage of companies is 34.75% and discover the most important reasons that companies do not use derivatives. Moreover, institutional investors use all the swap products that are referred to the questionnaire when companies use only interest rate and currency swaps.
A Fuzzy Growth Options Approach under Competition Threat
Authors: Angelou Georgios , Economides Anastasio
Published: January 2021

Information Communication Technology (ICT) projects may contain “wait and see” components, which give ICT managers the option to defer decisions until some uncertainty is resolved. In this paper, we treat these ICT opportunities as Real Options (RO) and assume that there is competition threat that can influence negatively or even worst eliminate their values. We consider exogenous competition modeling assuming that competitors are entering randomly into the market and cause a degradation of the available to the firm of interest overall market value. We introduce fuzzy logic and combine it with ROs under competition threat. The theory developed implicitly contains not only the deferral flexibility of projects but also the possibility of considering vague information, which needs to be taken into account when (long-time range) financial decisions are made. Our proposed model is applied to a real life broadband technology business activity associated with “Egnatia Odos S.A.” strategic decision to deploy optical fiber backbone network along the national motorway “Egnatia Odos.” The results of our model prove that FROs analysis may increase the overall value of the ICT business activity despite competition threat.
Global Business Research and Strategic Planning Tools
Authors: Janavaras Basil , Gomes Emanuel
Published: January 2021

The web-based tools discussed in this paper support students and business practitioners alike in their roles as managers and decision makers in a global setting. More specifically, the software will enable users to perform a situation analysis of a company, determine best markets for a company’s products/services and develop an international business plan online. Project-Based Learning (PBL) is a teaching and learning method widely used at universities and businesses around the world. The three software - the Global Market Potential System Online (www.globalmarketpotential.com), the Global Marketing Management System Online (GMMSO, www.gmmso2.com) and the Export Import Management System Online (EIMSO), www.eimso.com) - are web-based PBL tools designed to be used for international business projects. The purpose of this paper is to briefly explain PBL, show how the software work, the benefits provided to both students and instructors using the software and discuss both pedagogical issues and student reactions based on a survey questionnaire.