bluuebunny/crossref_metadata_2025 huggingface dataset:
Proyecto de mejora del índice de satisfacción del cliente en el proceso de Animación en el hotel Meliá Las Antillas de Varadero
Authors: Jiménez Valero Bisleivys , Lorenzo Puentes Mabielys , Pino Acosta Lisdeybis
Published: January 2021

La investigación se realiza en el área de Animación del hotel “Meliá Las Antillas” ubicado en la península de Varadero en la provincia de Matanzas. Aborda el tema de la satisfacción del cliente, donde a pesar de que se trabaja por obtener altos índices de satisfacción se refleja un alto número de quejas por parte de los clientes, lo que constituye un problema científico a resolver. El objetivo general consiste en proponer un proyecto para la mejora del índice de satisfacción del cliente en el proceso de Animación del hotel. Para ello se sigue un procedimiento que integra las técnicas de gestión de proyectos en sus fases de identificación y planificación, así como entrevistas con el personal, revisión de documentos y observación directa. Como resultado se obtienen dos alternativas de solución a la problemática identificada, no obstante, una de ellas es más viable que la otra, la cual se le propone a la entidad para su ejecución y control.
El talento de los estudiantes para la ciencia. Estrategias para su estimulación en la provincia de Mayabeque
Authors: León Arencibia Ariel , Dorvigny González Beatriz de la Caridad , Rodríguez Brito Bárbaro Evelio
Published: January 2021

El talento se ha estudiado con mucho más interés a partir del siglo XX por diversos investigadores de distintos enfoques, desarrollando modelos de identificación y caracterización. Los modelos propuestos por especialistas cubanos son estáticos en las técnicas a emplear, sobre todo en el caso de la dimensión intelectual donde se hace hincapié en los tests y pruebas para medir la inteligencia, sobre todo el factor general (g), soslayando un enfoque más integral. Para solucionar el problema se planteó el objetivo: Elaborar una estrategia didáctica que contribuya a la estimulación del talento académico en los estudiantes para las ciencias en la provincia Mayabeque. Para caracterizar al estudiante de la muestra se definieron como unidades de análisis: el talento académico en la adolescencia y el talento académico del estudiante de preuniversitario identificado por sus profesores. El análisis de los resultados se hizo teniendo en cuenta las dimensiones: intelectual, desempeño, creatividad y contexto social y sus indicadores. Las áreas en las que se destaca un estudiante con talento investigado, aunque se presentó como una regularidad en el la carencia de homogeneidad en las dimensiones e indicadores evaluados.
Propuesta de una estrategia de comunicación para la empresa hotelera Gaviota
Authors: Pulido de la Paz Dayana , Vázquez Alfonso Yasser
Published: January 2021

El auge de las redes sociales de Internet (RSI) han impactado de forma positiva la estrategia de marketing de las empresas turísticas. El presente trabajo se propone elaborar una estrategia de comunicación para el uso de redes sociales en la empresa hotelera Gaviota. Para arribar a este resultado se realizó un diagnóstico que develó un conjunto de insuficiencias en el uso de las redes sociales en la empresa hotelera Gaviota. En particular desde la teoría de la comunicación y los fundamentos del uso de las redes sociales, se diseñó la estrategia propuesta, como resultado científico que cumplió a su vez con los requisitos actuales de la metodología de la investigación turística. En este sentido se propone el uso de redes sociales desde la estrategia elaborada, que ofrece una respuesta teórico-práctica a los retos de las empresas hoteleras cubanas, especialmente dado en el actual dinamismo propiciado por el proceso de cambios del sector turístico cubano. La estrategia en lo teórico aporta un conjunto de ideas rectoras que orienta a los directivos de la empresa hotelera Gaviota un proceder para la utilización eficaz de las redes sociales en la promoción de los productos y servicios de la empresa. La factibilidad de la misma fue determinada utilizando la consulta a expertos.
Estrategias de resolución de problemas y creencias de estudiantes universitarios (estudio de casos)
Authors: Fonte Águila Armando A. , Varela Nualles Mario
Published: January 2021

El conocimiento de las estrategias y creencias que traen los estudiantes de los niveles de enseñanza precedentes, permitiría a los docentes en Matemáticas readecuar el tratamiento metodológico de los contenidos y dar atención diferenciada. 

Esta investigación propone una metodología científica basada en la concepción metodológica de los Estudios de Caso para, mediante diagnóstico, aislar y describir las estrategias que utilizan los estudiantes de primer año de las carreras Licenciatura en Contabilidad y Finanzas, Licenciatura en Agronomía e Ingeniería Agrícola, de la Universidad Agraria de La Habana; así como de los estudiantes de primer año de la carrera Licenciatura en Pedagogía, especialidades de Física e Informática de la  Escuela Superior Politécnica de Moxico, República de Angola. Se persigue también aislar algunas de las creencias que frenan el desarrollo de procesos exitosos de solución.

Como resultados se exponen ejemplos de las estrategias y creencias manifestadas y se derivan mediante estadísticas descriptivas particularidades por carreras y los diagnósticos individuales por elementos del conocimiento.
Variables de deterioro en la gestión de la sobremesa cubana y la protección al consumidor
Authors: Milán Fonseca Pedro Pablo , González Basanta Olivia , Guerra Rodríguez Patricia
Published: January 2021

La deficiente gestión de los productos de sobremesa cubana en La Habana, que deteriora el sistema de protección al consumidor en entidades de restauración para el turismo, constituyó la principal problemática de la presente investigación. La identificación de las variables que deterioran el sistema de protección al consumidor en dicha gestión, contribuye a una mejora en los servicios de alimentos y bebidas, favorece la comercialización de productos nacionales y la satisfacción del cliente. Con el fin de fortalecer el sistema de protección al consumidor, atendiendo a estándares internacionales, la investigación se estructuró en tres fases, correspondientes a: (1) la consulta a fuentes secundarias de información, a través del análisis documental y la búsqueda referencial en Internet; (2) la consulta a fuentes primarias de información, empleando la medición, estadística descriptiva, entrevistas, encuestas y observación científica; (3) el análisis, síntesis y resolución, partiendo de un diseño estadístico para la elaboración de tablas, gráficos, histogramas, dendogramas, árboles de clasificación y conglomerados jerárquicos, y empleando  los diagramas de Pareto e Ishikawa. La investigación arrojó como resultado principal la identificación de dichas variables y criterios, los cuales sirvieron como fundamento para la elaboración de un procedimiento que atenúe el impacto negativo que ejercen sobre el sistema de protección del consumidor.
Sistema informático para la gestión de ensayos fisicoquímicos en la Central Termoeléctrica Ernesto Guevara
Authors: Sánchez Rojas Naddiel Jesús , Machín Armenteros Amaury , Marrero García Yusney
Published: January 2021

La gestión de la información asociada a los ensayos fisicoquímicos que se llevan a cabo en el Departamento de Química de la Central Termoeléctrica Ernesto Guevara se ve afectada debido a que dicha gestión se realiza a través de documentos de textos, y hojas de cálculo. Esto impide una buena explotación de los datos e implica que se generen grandes volúmenes de información, difíciles de guardar y procesar, lo cual dificulta el control del proceso de generación eléctrica. Por estas razones se decide desarrollar un sistema informático que mejore la gestión de información. Como resultado del presente trabajo se obtuvo un sistema que permite la gestión y control de la información, lo cual garantiza una mayor organización, respuestas rápidas ante las consultas, y datos precisos que podrán ser utilizados como apoyo en el proceso de toma de decisiones en el Departamento de Química.
Estudio comparativo sobre las capacidades físicas del adulto mayor
Authors: Coca Orlando Rodrigo , Flores Mónica Cabezas , Gómez Nicolalde Ronal Vinicio , Zamora Parra Xavier Alejandro
Published: January 2021

El presente trabajo busca exponer un estudio comparativo entre dos centros de atención al adulto mayor, con relación al deterioro de sus capacidades físicas (sarcopenia), provocada por el desgaste natural de su edad, que afectan directamente en sus capacidades funcionales, que otorgan al adulto mayor una calidad de vida que responde directamente al tratamiento que se brinde sobre ella. Se utilizó una muestra de10 personas en un rango de edad entre 57 y 88 años para valoración mediante aplicación de test físicos, y 18 personas en un rango de edad entre 80 y 100 años para valoración mediante cuestionario de actividad física, entre los centros: “Hogar de Ancianos Mi Amigo Divino” y “Hogar del Adulto Mayor San Ignacio de Loyola”, mediante los cuales se determinó su nivel físico a través de pruebas funcionales considerando las capacidades físicas de fuerza, flexibilidad y equilibrio estático tanto del tren superior e inferior, valorando de manera funcional el grado de movilidad del adulto mayor, totalizando datos reales de sujetos con distintas características de índole social, por lo que se describe a una población mayoritariamente sedentaria desde un parámetro cuantitativo. Los datos presentados en esta investigación brindan una referencia de gran importancia sobre la situación actual del adulto mayor en relación a la pérdida progresiva tanto del volumen muscular como de la fuerza de los mismos.
Survey on Technical Efficacy of the Farmers and Their Satisfaction Level for the Production of Onion Seeds in Bagmara Upazila, Rajshahi District
Authors: Md Asaduzzaman - , Habib Mohammad Ahsan , Haque Md Rezaul , Islam Md Shafiqul , Khandakar Jebunnahar
Published: January 2021

Onion seed production is not exactly same as the cultivation of the onion as a crop. Due to lack of recommended standard cultural practices, an onion seed producer in Bangladesh is facing different levels of difficulties. To address this issue, the present study has been undertaken for generating farm level information on the production and input use pattern in the onion seed cultivation. Using semi structured questionnaire, a total of 50 onion farmers is randomly selected from Bagmara upazila, Rajshahi district for the interview. The results indicate that there were so many constraints on onion seeds production such as unavailability of high yielding varieties, shortage of information about recommended fertilizer doses, bulb size, planting space, setting of planting time, etc. At the same time, farmers are also fronting problem regarding paucity of separated land, absence of specialized onion cold storages. Considering the above- mentioned problems, the results showed that 70% of the farmers are not satisfied with the onion seeds yield. The study suggested that distribution system of the quality onion seeds has to be improved coupled with the onion research in Bangladesh has to govern by the dynamics of seed grower’s quality preferences and their socio- eco- climatic infrastructure. Furthermore, it is indispensable to introduce training programs for the farmers for improving their knowledge about management practices as seed production required highly skill person

Res. Agric., Livest. Fish.7(3): 383-391,  December 2020
Electrical Conductivity, pH, Organic Matter and Texture of Selected Soils Around the Qatar University Campus
Authors: Alam Shanon Iffat , Hammoda Hadeel , Khan Faiza , Enazi Reem Al , Goktepe Ipek
Published: January 2021

Assessment of soil quality by soil analysis is a valuable tool for a farm as it determines the inputs required for efficient and economical production. A proper soil test helps ensure the application of sufficient fertilizers to meet the requirements of the crop while taking advantage of the nutrients and conditions already present in the soil. Though soil pH, electrical conductivity (EC), organic matter and texture are important features that determine the fertility of the soil, quantitative information on these properties are limited. The objective of the present study was to assess the pH, EC, organic matters and texture of four selected locations around the Qatar University campus including Biology Field (BF), Science Garden (SG), Greenhouse Inside (GHI) and Greenhouse Outside (GHO). We observed significant differences in the pH, EC and organic matter contents among the four locations. The highest pH was observed in SG and lowest in GHI whereas highest EC was observed in GHI and lowest in BF. Highest organic matter was found in GHI and lowest in BF. The soil texture of the BF and SG was sandy clay while that of GHI and GHO was loamy sand. Considering all four parameters analyzed in the present study, the GHI soil was found more suitable for plant growth.

Res. Agric., Livest. Fish.7(3): 403-409,  December 2020
Coefficient of Algebraic Relationship Between Linear Dimensions as Growth Deduction for Rainbow Sardine Dussumieria Acuta in the Bay of Bengal
Authors: Ahmed Zoarder Faruque , Fatema Mst Kaniz , Zohora Umme Habiba Az , Joba Mansura Akter , Ahamed Ferdous
Published: January 2021

The intercept as the coefficient of algebraic relationship between standard length (SL) and total length (TL), the two predominantly used linear dimensions of fin fish species, was referred to growth pattern deduction for rainbow sardine Dussumieriaacuta population in the Bay of Bengal. Monthly rainbow sardine samples were collected from the industrial fishing vessel in the Bay of Bengal over a period of a calendar year. The length-length relationship was formed algebraically as y=a+ bx. Linear relationship between SL and TL for male, female and unsexed populations was constructed separately. Chi-squared test affirmed that sex ratio between male and female did not deviate from the parity (P>0.05). The SL and TL ranges of male were 13.1-16.8and 16.4-20.7 cm respectively, they for female were13.4-17.2 and 16.5-20.9 cm respectively. Slope and intercept showed variation monthly in all length-length relationships regardless of sexes. The generalized SL-TL relationships of male, female and unsexed populations employing pooled data over the study period were TL=1.130SL+1.571 (R=0.908), TL=1.106SL+1.925 (R=0.911), and TL=1.114SL+1.825 (R=0.908) respectively. The correlation coefficients of all monthly and generalized regression analyses of all sex categories were very high (R≥0.786), a fact that explained the associations between two length dimensions were strongly related. Study revealed isometric growth for male in all months, while algometry was apparent for female and unsexed populations in a few months. Present findings of length-length relationship and growth pattern for D. acuta population in the Bay of Bengal would remain useful for future references.

Res. Agric., Livest. Fish.7(3): 545-551,  December 2020
Exploration of Physics Concepts Based on Local Wisdom Kolecer Traditional Games
Authors: Sholahuddin Mohammad Imam , Admoko Setyo
Published: January 2021

Teachers' perceptions in developing learning are needed to help students more easily capture information from the learning activities undertaken. One way that can be applied is by connecting learning materials with the local wisdom of the surrounding environment or commonly known as ethnoscience. Indonesia is a country rich in local culture in every region. Therefore, it is important for the nation's future generations to protect and preserve what already exists, for example by linking local culture to physics learning materials. The purpose of this study was to determine the potential for any physics concepts that exist in traditional kolecer games that can be applied to learning physics and everyday life. This type of research is the Narrative Review. Based on the research results, it was found that there was a potential application of physics concepts to local wisdom (ethnoscience) in the traditional "kolecer" game, these physics concepts were in the matter of equilibrium, pressure, Newton’s first and second law, work and energy, kinetic energy, and circular motion. It can be concluded that the application of local wisdom-based learning can help students easily grasp the material provided by the teacher and make learning more meaningful, especially on local wisdom of traditional kolecer games.
Uso de solução de Plantago major para o controle do biofilme dental: relato de caso
Authors: Araújo Jadson , Dobrovolski Máx , Kozlowski Júnior Vitoldo Antônio , Rezende Márcia
Published: January 2021

A inserção de fitoterápicos na forma de colutórios para uso preventivo e curativo na Odontologia é uma alternativa viável e promissora, pela facilidade de acesso e custos. A Plantago major é uma planta medicinal utilizada para inflamações bucais e orofaringe, como agente antibacteriano e antifúngico. Tem-se implementado a utilização como colutório, sendo coadjuvante dos procedimentos mecânicos de higiene oral. O objetivo foi relatar o efeito da solução aquosa de Plantago major à 7 % como colutório diário, no controle do biofilme dental e gengivite. O paciente relatou dor nos dentes 11 e 21, e sangramento gengival durante a higienização bucal. Ao exame clínico foram observadas lesões cariosas ativas, tecido gengival edemaciado com áreas hiperemicas. Para caracterizar o quadro clínico foi aplicado o índice de manchamento dentário de Lobene, índice gengival de Löe & Silness e o índice de placa bacteriana de Turesky. Foram detectadas áreas com manchas leves, inflamação gengival suave e moderada (sangramento sob pressão), e altos escores no índice de placa bacteriana de Turesky. Após adequação do meio bucal e profilaxia dental foi solicitado que o paciente bochechasse 10 mL da solução de Plantago major à 7 %, 2 vezes/dia, por 1 mês. Foram realizados controles clínicos semanais. Após 1 mês, foi observada ausência de manchas, redução significativa nos índices da inflamação gengival e de placa bacteriana, com ausência de sangramento. Não houveram efeitos colaterais. Concluiu-se que a solução de Plantago major apresentou perfil terapêutico efetivo no controle do biofilme dental, auxiliando no restabelecimento da saúde bucal.
Movements of egg-bearing American lobsters Homarus americanus during late stage brooding and hatching
Authors: Carloni JT , Goldstein JS , Watson III WH
Published: January 2021

Although the large-scale movements of ovigerous (egg-bearing) American lobsters have been well-studied, their finer scale movements before, and during, the time when their eggs hatch are poorly understood. In this study, acoustic telemetry was used to track 12 ovigerous lobsters, carrying late-stage eggs, near the Isles of Shoals in the southern Gulf of Maine. In the spring of 2016 and 2017, lobsters were captured, fitted with acoustic tags that transmitted both depth and activity data, and released within an array of receivers. Eleven of the 12 lobsters moved from relatively shallow water (12 m) to deeper water (>29 m) approximately 2 wk prior to the time when their eggs were predicted to hatch. Four of these lobsters were within the array when their eggs most likely hatched, while 8 left the array towards even deeper water (>35 m). These data, taken together with previous data from research traps, suggest that egg-bearing lobsters tend to move to deep water prior to the time when their eggs are due to hatch, which may be beneficial for the dispersal and survival of their larvae.
IMPLEMENTASI MODEL PEMBELAJARAN PREPARING DOING CONCLUDING (PDC) UNTUK MENINGKATKAN KETERAMPILAN BERPIKIR KRITIS SISWA
Authors: Nelly Deviar
Published: January 2021

This research is motivated by learning activities that are still notes, memorization, and simple explanations from the teacher without requiring students to analyze a problem and try to solve the problems faced in learning. For this reason, the implementation of the Preparing, Doing, and Concluding (PDC) learning model is expected to be a solution to improve students' critical thinking skills. This research was conducted on grade IV / A students of SDN 003 Sungai Salak. This type of research is classroom action research. The instrument used was a critical thinking skills test. The results showed that the average critical thinking skills of students in the first cycle was 66.72 in the sufficient category, in the second cycle it was 75.52 which was included in the good category. Based on the research results, it can be concluded that the implementation of the Preparing, Doing, and Concluding (PDC) learning model can improve the critical thinking skills of grade IV / A students of SDN 003 Sungai Salak.
MENINGKATKAN KECERDASAN INTERPERSONAL ANAK USIA DINI
Authors: Putra Windisyah
Published: January 2021

Penelitian ini bertujuan mendeskripsikan dan mengetahui hasil pelaksanaan pengembangan kecerdasan interpersonal serta memberikan kontribusi positif sekaligus menjadi bahan pertimbangan untuk RA Bintang Zuhra Takengon Aceh Tengah, Aceh. Penelitian kualitatif ini, menggunakan pendekatan psikologis dan sosiologis. Teknik pengumpulan data melalui pengamatan partisipatif, wawancara, dan dokumentasi. Selanjutnya dianalisis melalui reduksi data, penyajian data, pengambilan kesimpulan, dan verifikasi data. Subjek penelitian kelas B sebanyak 19 orang terdiri dari 12 perempuan dan 7 laki-laki disemester genap. Kegiatan beragam dilakukan anak untuk pengembangan sikap, kebiasaan, dan pemahaman dengan bermain sambil belajar. Hasil penelitian menunjukkan; (1) Pengembangan kecerdasan interpersonal anak dilakukan dengan menanamkan sikap keteladanan, tanggung jawab, pembiasaan, keberanian, dan displin; (2) Hasil penilaian menunjukkan bahwa persentase penilaian anak berjumlah 81,82%. Itu artinya kecerdasan interpersonal anak berada pada level baik; dan (3) Dari hasil yang dicapai menunjukkan adanya relevansi peningkatan kecerdasan interpersonal anak dengan kegiatan yang ada di RKH.
IMPROVING SCIENCE PROCESS SKILLS FOR ELEMENTARY SCHOOL STUDENTS USING PROBLEM BASED LEARNING APPROACH
Authors: SARI S LIFDA , Fitria Yanti
Published: January 2021

This research was motivated by the low process skills of elementary school students. The purpose of this research was to improve the process skills of elementary school students by using PBL. This research is a class action research using Mac Taggart design consisting of planning, implementation, observation and refleskis. This study consisted of 2 cycles with the number of students as many as 30 students. Data collection techniques use observation sheets. The results stated that there was an improvement in the process skills of elementary school students using the PBL model from the results of cycle process skills 1 getting a score of 66.67 increased in cycle 2 getting a score of 83.33. The implications of this research can serve as the basis for teachers in developing the process skills of elementary school students.
UPAYA MENINGKATKAN KEMAMPUAN PASSING BAWAH SISWA MELALUI MODEL PEMBELAJARAN TEAM GAME TOURNAMENT
Authors: Irmayenti Irmayenti
Published: January 2021

This study aims to improve students' ability to do under-passing. The effort made by researchers is to apply TGT learning so that students feel happy and foster motivation to do their best. This research was conducted in grade 7 of SMPN 9 Mandau which was held in September 2019. The subjects in this study were 29 students, with 14 boys and 15 girls. The research instrument used was the student activity observation sheet. The results showed that in the first cycle as many as 15 students or 51.72% had reached the good criteria, this achievement was considered not to have reached the specified success indicators so that it needed to be improved in the next cycle. In the second cycle it increased to 93.09%, which means that 27 students were able to pass well. Based on the results of the study it can be concluded that the application of TGT can improve the under-passing ability of grade 7 students of SMPN 9 Mandau.
Astaxanthin accumulation in Haematococcus pluvialis cells induced by nitrogen deficiency and high light intensity
Authors: Samovich Tatyana V. , Goncharik Ruslan G. , Pechenkina Elizaveta I. , Viazau Yauhen V. , Kozel Nikolay V.
Published: January 2021

It was established that nitrogen deficiency initiated at the resting phase of Haematococcus pluvialis (H. pluvialis) is not an effective stress factor in combination with high light intensity to induce the accumulation of astaxanthin in algae cells. The amounts of astaxanthin in H. pluvialis cells in the absence of nitrogen were lower compared to those when complete Rudic medium was used, regardless of the light intensity. This fact indicates the need for a certain amount of nitrogen in the medium for the functioning of the astaxanthin synthesis system. In addition, the low yield of astaxanthin in the experimental variants cultivated on incomplete Rudic medium is associated with the insufficient amount of nitrogen for its biosynthesis and also with a decrease in the expression level of the PSY gene encoding a key enzyme of the carotenoid biosynthesis chain – phytoene synthase.
Influence of polyelectrolytes on increasing sensitivity of an immunofluorescent analysis based on plasmon silver nanoparticles
Authors: Koktysh Irina V. , Mel’nikova Yanina I. , Kulakovich Olga S. , Ramanenka Andrei A. , Maskevich Sergey A.
Published: January 2021

It was studied the dependence of the interaction of the components of the immunofluorescence test system for the quantitative determination of prostate specific antigen based on plasmon silver nanoparticles on the physicochemical nature of various polyelectrolytes used to coat films of silver nanoparticles. It has been shown that the use of a weakly charged polycationic polyelectrolyte poly-L-lysine can increase the antigenic binding of the test system by 2.34 times, and the use of a highly charged polycationic polyelectrolyte polydiallyldimethylammonium chloride increases the binding affinity of prostatic specific antigen by 5 times. When developing various immunochemical test systems using films of silver nanoparticles, an important parameter is the choice of a polyelectrolyte for coating a silver nanolayer, since the physicochemical and electrostatic properties of the polyelectrolyte can significantly affect both the sorption capacity of the solid phase and the conformational state functional activity of immobilized protein molecules. Both specificity and sensitivity of the immunochemical test system, as well as the minimum possible detectable concentration of bioanalyte, largely depend on these parameters.
First record of Phyllonorycter maestingella (Müller, 1764) in Belarus
Authors: Sautkin Fedor V. , Sinchuk Aleh V. , Baryshnikova Svetlana V.
Published: January 2021

Inspection of green stands in order to identify representatives of the genus Phyllonorycter Hübner, 1822 (Lepidoptera: Gracillariidae, Lithocolletinae), which damage woody plants in Belarus, revealed a new species for the fauna – beech midget (Phyllonorycter maestingella (Müller, 1764)). In 2014 we discovered this new invasive insect pest of the beeches (Fagus spp.) in Belarus for the first time. During 2014–2018 leaf mines of Ph. maestingella were recorded in 2 localities, Minsk and Brest, on 3 hostplant species, Fagus sylvatica Linnaeus, 1753, Fagus grandifolia Ehrhart, 1788, and Fagus orientalis Lipsky (1898). It is important to note that American beech (F. grandifolia) is recorded as a new host plant for Ph. maestingella. A list of points of registrations is given. This species of Lithocolletinae is alien to the fauna, since all representatives of the genus Fagus L. are introduced into Belarus.
Sociodemographic Conditions of Angolan Patients with New Pathologies After Hemodialise Treatment
Authors:   Higher Institute of Health Sciences, Agostinho Neto University, Luanda-Angola, Sacomboio Euclides Nenga Manuel , Gamba Maite Zeferino ,   Pluribus Africa Hemodialysis Center at Hospital Américo Boa vida
Published: January 2021

Kidney disease is a global public health problem, affecting more than 750 million people worldwide, the magnitude and impact of kidney disease are better defined in developed countries, clinical evidence suggests that in developing countries like Angola, the impact may be greater. Objective: To verify the sociodemographic conditions of Angolan patients with new pathologies after hemodialysis treatment. Method: It was conducted as a descriptive, cross-sectional and quantitative approach, in a population consisted of 100 patients undergoing hemodialysis at the Hemodialysis Pluribus Africa Center, index of confidence was 90% and a sample margin of error of 6.8%. Results: The results of the study showed that of the 100 patients followed, 55% (55/100) acquired new pathologies, including HIV 28% (15/55), lupus erythematosus 25% (14/55), Diabetes 18% (10/55), Tuberculosis 11% (6/55), Hepatitis C 9% (5/55), Hepatitis B 5% (3/55) and Osteoporosis 4% (2/55). The incidence of new pathologies in illiterate was 94% (16/17), with pre-school level 41% (11/27), with elementary school 11/26 (42%), with medium level 44% (8/18) and university level 75% (9/12). New pathologies in autonomous was 57% (27/47), in unemployed was 47% (17/36), in employees was 65% (11/17). The incidence of new pathologies was 42% (18/43) in patients with arterial hypertension, in malaria 59% (16/27), in diabetes mellitus it was 76% (19/25), in other diseases it was 40% (2/5). New pathologies in patients on hemodialysis for less than 6 years was 48% (39/81), in treatment between 6 and 10 years was 75% (9/12), in treatment between 11 and 15 years was 100% (7/7). Conclusions: These factors can contribute to the reduction of life expectancy of hemodialysis patients and therefore it is necessary to carry out more studies on the factors that are associated with this, to allow the creation of more effective health policies to reduce the suffering of these patients.
Organization's Values Perspective to Financial Reporting
Authors: Rapina Rapina Rapina , Carolina Yenni , Setiawan Santy , Gania Amanda
Published: January 2021

AbstractThe purpose of this study is to obtain the truth regarding organizations financial statements by examining the influence of organizational culture. This is a verification research, with an explanation technique used to determine the factors estimated to affect the variables. The non-probability sampling technique was used to obtain primary data from 65 respondents working in several Indonesia organizations through questionnaires and by observing their accounting and finance divisions. Hypothesis testing in this study uses Structural Equation Modeling (SEM) with the estimation of model parameters using the PLS method (Partial Least Square). The consideration of choosing SEM analysis technique is because the variables involved are unobserved variables and there is a causal relationship between the variables. According to initial concepts, organizational culture contributes to financial reporting development due to its ability to reflect an organization's specificity and characters. The result showed that organizational culture is the property and guidelines for all individuals in an organization to carry out their duties, and it influences the presentation of financial statements.Keywords: Accounting; Financial reporting; Organizational culture.Abstrak Penelitian ini bertujuan untuk mendapatkan kebenaran melalui pengujian pengaruh budaya organisasi terhadap penyajian laporan keuangan. Jenis penelitian ini bersifat verifikatif dan bersifat penjelas atau kausalitas untuk mengetahui apa dan seberapa jauh faktor-faktor yang diperkirakan mempengaruhi suatu variabel dengan variabel lainnya. Jenis data yang digunakan adalah data primer dengan instrumen kuesioner yang dibagikan pada 65 responden dari beberapa organisasi di Indonesia. Unit observasi pada penelitian ini adalah bagian akuntansi dan keuangan pada tiap organisasi. Teknik pengambilan sampel dalam penelitian ini adalah dengan menggunakan teknik non-probability. Pengujian hipotesis dalam penelitian ini menggunakan Structural Equation Modeling (SEM) dengan penaksiran parameter-parameter model memakai metode PLS (Partial Least Square). Pertimbangan memilih teknik analisis SEM karena variable yang terlibat adalah unobserved variables serta adanya hubungan kausal antar variabelnya. Menurut konsep dikatakan bahwa budaya organisasi akan memberikan kontribusi yang berarti dalam meningkatkan pelaporan keuangan. Budaya organisasi akan mencerminkan spesifikasi dan karakter suatu organisasi. Budaya organisasi tersebut menjadi milik dan pedoman bagi seluruh lapisan individu yang ada pada suatu organisasi dalam menjalankan tugasnya. Hasil penelitian menunjukkan bahwa budaya organisasi berpengaruh terhadap penyajian laporan keuangan.Kata kunci: Akuntansi; Budaya organisasi; Pelaporan keuangan.
Abundancia y diversidad trófica de moluscos del mesolitoral rocoso en un gradiente de eutrofización de la costa suroriental de Cuba
Authors: Jover Capote Abdiel
Published: January 2021

En ecosistemas tropicales, los patrones espaciales y temporales de la abundancia y diversidad trófica de moluscos asociados a macroalgas han sido poco abordado. En el presente trabajo se determinó la abundancia y diversidad tróficas de moluscos, y la relación con la cobertura de macroalgas en el mesolitoral rocoso de Santiago de Cuba. Los muestreos se realizaron bimestralmente entre marzo de 2013 y febrero de 2014. La unidad de muestreo fue un cuadrado de 25 cm de lado. La misma se empleó 10 veces en las cuatro localidades (dos de ellas sometidas a la eutrofización). La mayor riqueza de especies de moluscos correspondió al grupo trófico de los herbívoros ramoneadores de superficie, con 19 especies. Los moluscos ramoneadores de superficie presentaron los mayores valores de abundancia en todas las localidades (Mar Verde, La Socapa, Aguadores y Siboney) y meses de muestreo (marzo, mayo, julio, septiembre, noviembre y febrero). En Aguadores, al este de Santiago de Cuba, se reporta la mayor diversidad trófica, abundancia de suspensívoros y carnívoros. La cobertura de macroalgas modula de manera positiva la relación con la diversidad trófica y la abundancia de suspensívoros y herbívoros ramoneadores de talo.
Biología y morfología externa de los estadios inmaduros de Spodoptera dolichos (Lepidoptera: Noctuidae)
Authors: Acosta Estévez Arley
Published: January 2021

Se describen la morfología externa y la biología de los estadios inmaduros de Spodoptera dolichos (Fabricius, 1974), (Lepidoptera: Noctuidae). Las larvas fueron colectadas en Ipomoea triloba L. (Convolvulaceae), lo cual constituye un nuevo registro de planta hospedera. Se ofrecen fotografías de los huevos, los siete estadios larvales y la pupa. Se describe e ilustra la morfología cefálica y la quetotaxia del primer estadio. Los resultados se comparan con los aspectos conocidos de otros estadios inmaduros de Spodoptera.
Computational Linguistic Assessment of Textbooks and Online Texts by Means of Threshold Concepts in Economics
Authors: Lücking Andy , Brückner Sebastian , Abrami Giuseppe , Uslu Tolga , Mehler Alexander
Published: January 2021

The ongoing digitalization of educational resources and the use of the internet lead to a steady increase of potentially available learning media. However, many of the media which are used for educational purposes have not been designed specifically for teaching and learning. Usually, linguistic criteria of readability and comprehensibility as well as content-related criteria are used independently to assess and compare the quality of educational media. This also holds true for educational media used in economics. This article aims to improve the analysis of textual learning media used in economic education by drawing on threshold concepts. Threshold concepts are key terms in knowledge acquisition within a domain. From a linguistic perspective, however, threshold concepts are instances of specialized vocabularies, exhibiting particular linguistic features. In three kinds of (German) resources, namely in textbooks, in newspapers, and on Wikipedia, we investigate the distributive profiles of 63 threshold concepts identified in economics education (which have been collected from threshold concept research). We looked at the threshold concepts' frequency distribution, their compound distribution, and their network structure within the three kinds of resources. The two main findings of our analysis show that firstly, the three kinds of resources can indeed be distinguished in terms of their threshold concepts' profiles. Secondly, Wikipedia definitely shows stronger associative connections between economic threshold concepts than the other sources. We discuss the findings in relation to adequate media use for teaching and learning—not only in economic education.
Successional Herbaceous Species Affect Soil Processes in a High-Elevation Alpine Proglacial Chronosequence
Authors: Mainetti Andrea , D’Amico Michele , Probo Massimiliano , Quaglia Elena , Ravetto Enri Simone , Celi Luisella , Lonati Michele
Published: January 2021

The study investigated plant-soil interactions along a proglacial chronosequence in the Italian Alps, with a specific focus on pioneer and grassland species structure and biogeochemical processes, with the aim to evaluate the biotic patterns in ecosystem development. We recorded vascular plant frequencies and the mean diameter of one pioneer and one grassland target species in 18 permanent plots distributed along six different stages encompassing a 170-years chronosequence in the Lauson Glacier forefield (NW Italy). We evaluated the main soil properties and measured the C:N:P stoichiometry in the biomass of pioneer and grassland target species and in the underlying soil. For comparative purposes, we analyzed also bare soils sampled near the sampled plant individuals. Pioneer species number and cover significantly increased 10 and 40 years after deglaciation respectively, while alpine grassland species cover and number peaked only after 65 and 140 years, respectively. Along the chronosequence, soils beneath vascular plants were enriched in nutrients, especially under individuals of alpine grassland species, with total organic C contents ranging between 1.3 and 8.9 g·kg−1 compared to 0.2 and 3.3 g·kg−1 in bare soils. Nitrogen content in bare soils was nearly undetectable, while it increased in the plant-affected soils, leading to a more balanced C:N:P stoichiometry in the oldest stages. The colonization of alpine grassland species started immediately, although species number and cover increased only when the soil acquired sufficient nutrient supply and functionality. Although the ecosystem remained C and N limited, the soil could provide adequate conditions for more competitive species establishment, as confirmed by the increasing number and cover of alpine grassland species. Thus, soil nutrient dynamics were strongly influenced by plants, with a major influence triggered by late-successional grassland species.
Haplotype Motif-Based Models for KIR-Genotype Informed Selection of Hematopoietic Cell Donors Fail to Predict Outcome of Patients With Myelodysplastic Syndromes or Secondary Acute Myeloid Leukemia
Authors: Schetelig Johannes , Baldauf Henning , Koster Linda , Kuxhausen Michelle , Heidenreich Falk , de Wreede Liesbeth C. , Spellman Stephen , van Gelder Michel , Bruno Benedetto , Onida Francesco , Lange Vinzenz , Massalski Carolin , Potter Victoria , Ljungman Per , Schaap Nicolaas , Hayden Patrick , Lee Stephanie J. , Kröger Nicolaus , Hsu Kathy , Schmidt Alexander H. , Yakoub-Agha Ibrahim , Robin Marie
Published: January 2021

Results from registry studies suggest that harnessing Natural Killer (NK) cell reactivity mediated through Killer cell Immunoglobulin-like Receptors (KIR) could reduce the risk of relapse after allogeneic Hematopoietic Cell Transplantation (HCT). Several competing models have been developed to classify donors as KIR-advantageous or disadvantageous. Basically, these models differ by grouping donors based on distinct KIR–KIR–ligand combinations or by haplotype motif assignment. This study aimed to validate different models for unrelated donor selection for patients with Myelodysplatic Syndromes (MDS) or secondary Acute Myeloid Leukemia (sAML). In a joint retrospective study of the European Society for Blood and Marrow Transplantation (EBMT) and the Center for International Blood and Marrow Transplant Research (CIBMTR) registry data from 1704 patients with secondary AML or MDS were analysed. The cohort consisted mainly of older patients (median age 61 years) with high risk disease who had received chemotherapy-based reduced intensity conditioning and anti-thymocyte globulin prior to allogeneic HCT from well-matched unrelated stem cell donors. The impact of the predictors on Overall Survival (OS) and relapse incidence was tested in Cox regression models adjusted for patient age, a modified disease risk index, performance status, donor age, HLA-match, sex-match, CMV-match, conditioning intensity, type of T-cell depletion and graft type. KIR genes were typed using high-resolution amplicon-based next generation sequencing. In univariable and multivariable analyses none of the models predicted OS and the risk of relapse consistently. Our results do not support the hypothesis that optimizing NK-mediated alloreactivity is possible by KIR-genotype informed selection of HLA-matched unrelated donors. However, in the context of allogeneic transplantation, NK-cell biology is complex and only partly understood. KIR-genes are highly diverse and current assignment of haplotype motifs based on the presence or absence of selected KIR genes is over-simplistic. As a consequence, further research is highly warranted and should integrate cutting edge knowledge on KIR genetics, and NK-cell biology into future studies focused on homogeneous groups of patients and treatment modalities.
A Monovalent and Trivalent MVA-Based Vaccine Completely Protects Mice Against Lethal Venezuelan, Western, and Eastern Equine Encephalitis Virus Aerosol Challenge
Authors: Henning Lisa , Endt Kathrin , Steigerwald Robin , Anderson Michael , Volkmann Ariane
Published: January 2021

Venezuelan, eastern and western equine encephalitis viruses (EEV) can cause severe disease of the central nervous system in humans, potentially leading to permanent damage or death. Yet, no licensed vaccine for human use is available to protect against these mosquito-borne pathogens, which can be aerosolized and therefore pose a bioterror threat in addition to the risk of natural outbreaks. Using the mouse aerosol challenge model, we evaluated the immunogenicity and efficacy of EEV vaccines that are based on the modified vaccinia Ankara-Bavarian Nordic (MVA-BN®) vaccine platform: three monovalent vaccines expressing the envelope polyproteins E3-E2-6K-E1 of the respective EEV virus, a mixture of these three monovalent EEV vaccines (Triple-Mix) as a first approach to generate a multivalent vaccine, and a true multivalent alphavirus vaccine (MVA-WEV, Trivalent) encoding the polyproteins of all three EEVs in a single non-replicating MVA viral vector. BALB/c mice were vaccinated twice in a four-week interval and samples were assessed for humoral and cellular immunogenicity. Two weeks after the second immunization, animals were exposed to aerosolized EEV. The majority of vaccinated animals exhibited VEEV, WEEV, and EEEV neutralizing antibodies two weeks post-second administration, whereby the average VEEV neutralizing antibodies induced by the monovalent and Trivalent vaccine were significantly higher compared to the Triple-Mix vaccine. The same statistical difference was observed for VEEV E1 specific T cell responses. However, all vaccinated mice developed comparable interferon gamma T cell responses to the VEEV E2 peptide pools. Complete protective efficacy as evaluated by the prevention of mortality and morbidity, lack of clinical signs and viremia, was demonstrated for the respective monovalent MVA-EEV vaccines, the Triple-Mix and the Trivalent single vector vaccine not only in the homologous VEEV Trinidad Donkey challenge model, but also against heterologous VEEV INH-9813, WEEV Fleming, and EEEV V105-00210 inhalational exposures. These EEV vaccines, based on the safe MVA vector platform, therefore represent promising human vaccine candidates. The trivalent MVA-WEV construct, which encodes antigens of all three EEVs in a single vector and can potentially protect against all three encephalitic viruses, is currently being evaluated in a human Phase 1 trial.
Pre-Treatment Tumor Growth Rate Predicts Clinical Outcomes of Patients With Advanced Non-Small Cell Lung Cancer Undergoing Anti-PD-1/PD-L1 Therapy
Authors: He Li-na , Zhang Xuanye , Li Haifeng , Chen Tao , Chen Chen , Zhou Yixin , Lin Zuan , Du Wei , Fang Wenfeng , Yang Yunpeng , Huang Yan , Zhao Hongyun , Hong Shaodong , Zhang Li
Published: January 2021

Tumor growth rate (TGR; percent size change per month [%/m]) is postulated as an early radio-graphic predictor of response to anti-cancer treatment to overcome limitations of RECIST. We aimed to evaluate the predictive value of pre-treatment TGR (TGR0) for outcomes of advanced non-small cell lung cancer (aNSCLC) patients treated with anti-PD-1/PD-L1 monotherapy. We retrospectively screened all aNSCLC patients who received PD-1 axis inhibitors in Sun Yat-Sen University Cancer Center between August 2016 and June 2018. TGR0 was calculated as the percentage change in tumor size per month (%/m) derived from two computed tomography (CT) scans during a “wash-out” period before the initiation of PD-1 axis inhibition. Final follow-up date was August 28, 2019. The X-tile program was used to identify the cut-off value of TGR0 based on maximum progression-free survival (PFS) stratification. Patients were divided into two groups per the selected TGR0 cut-off. The primary outcome was the difference of PFS between the two groups. The Kaplan-Meier methods and Cox regression models were performed for survival analysis. A total of 80 eligible patients were included (54 [67.5%] male; median [range] age, 55 [30-74] years). Median (range) TGR0 was 21.1 (-33.7-246.0)%/m. The optimal cut-off value of TGR0 was 25.3%/m. Patients with high TGR0 had shorter median PFS (1.8 months; 95% CI, 1.6 - 2.1 months) than those with low TGR0 (2.7 months; 95% CI, 0.5 - 4.9 months) (P = 0.005). Multivariate Cox regression analysis revealed that higher TGR0 independently predicted inferior PFS (hazard ratio [HR] 1.97; 95% CI, 1.08-3.60; P = 0.026). Higher TGR0 was also significantly associated with less durable clinical benefit rate (34.8% vs. 8.8%, P = 0.007). High pre-treatment TGR was a reliable predictor of inferior PFS and clinical benefit in aNSCLC patients undergoing anti-PD-1/PD-L1 monotherapy. The findings highlight the role of TGR0 as an early biomarker to predict benefit from immunotherapy and could allow tailoring patient’s follow-up.