bluuebunny/crossref_metadata_2025 huggingface dataset:
La administración como elemento fundamental del desarrollo humano
Authors: Ramírez Becerra Nancy Paola
Published: August 2021

Desde tiempos muy remotos el hombre siempre se ha preocupado por estar a la vanguardia Y ser pionero en todas las actividades que realiza. En un momento antiguo podemos darnos cuenta que las ideas eran mas  avanzadas que el hombre, pero ahora es el hombre quien vive mas que las ideas. "El pensamiento Administrativo esta condicionado por esa realidad y generación sobre el acto administrativo se produce en lapsos cada vez menores." No solo esto se ve reflejado en estos tiempos sino, cuando aun las antiguas civilizaciones americanas no habían sido gobernadas por las colonias españolas.Tanto lo Mayas como los Aztecas y los Incas tuvieron que verse envueltos en un proceso de planeación, dirección y control de sus tribus. Ellos eran excelentes administradores puesto que a diario estaban en condiciones de poner en prnct1ca sus conocimientos de agricultura, la pesca, la artesanía y muchas actividades que requeman de mucha organización para poder sobrevivir.
La investigación de filtros en ingeniería electromecánica de la UPTC, Una aproximación
Authors: Rincón González Richard , Armando Soledad Darío , Fernando Pico Diego
Published: August 2021

Hoy en día el acceso a la investigación y al desarrollo de nuevos dispositivos, materiales o técnicas sólo se encuentra concentrados en los países con recursos económicos suficientes para la investigación. Esta investigación se realiza por medio de agencias gubernamentales, instituciones educativas o empresas privadas. En el mundo día a día se va investigando más por los sectores privados que por los gubernamentales, esto ha provocado dar forma a dos tendencias dela investigación, las cuales son: La que realmente se dedica a diseñar estrategias de solución a problemas del entorno y la que se dedica a mantener los diseños de investigación vigentes
Síntesis de Isopulegoles sobre Al2O3/SIO2
Authors: Velasco W J , Rojas H , Martínez H , Reyes J
Published: August 2021

El isopulegol, es un alcohol monoterpenico, ampliamente empleado en la industria de sabores y perfumes, en alimentos es aditivo de distintos productos\ de consumo, cigarrillos, pastas dentales, gomas de mascar, confites, productos de aseo personal, bebidas y productos farmacéuticos.
Bioinformática, más que una herramienta de investigación
Authors: Medina Camilo
Published: August 2021

Grupo de Investigación GebimolSemillero de Investigación GIGALa Bioinformática inició con el análisis de secuencias de ADN, hoy en día maneja un océano de información, es muy probable que en ella esté la clave para entender más ampliamente los procesos evolutivos, las causas de las enfermedades, los procesos celulares, etc. De una forma general podemos ver a la Bioinformática como la tecnología de la información, la matemática y la estadística empleadas para organizar, analizar y distribuir información (Attwod,1999) (incluyendo secuencias de nucleótidos y aminoácidos, dominios de proteínas y estructura de proteínas), esto con el fin de darsolución a incógnitas de origen biológico.
Descripción fenomenológica de la ecolocalización, imágenes a partir de sonidos
Authors: Peña Jully
Published: August 2021

Muchos animales utilizan el sonido como herramienta de ubicación y supervivencia, por esta razón sus sistemas auditivos han evolucionado eficazmente, asegurando su conservación en la naturaleza. Uno de los procesos más interesantes desarrollados por estos sistemas biológicos es la ecolocalización, fenómeno consistente en la ubicación y reconocimiento del medio ambiente a través del análisis de ondas sonoras de alta frecuencia y que ha alcanzado su máxima perfección, en los murciélagos. Aquí, este fenómeno es abordado en su descripción fenomenológica desde el punto de vista físico en cuanto al estudio de las ondas mecánicas y biológico a partir de la recepción y análisis de sonidos en estos animales.Palabras clave: ecolocalización, sonido, sistema auditivo.
Ser semillero es dar un paso adelante
Authors: Semilleros Revista
Published: August 2021

Otra vez los jóvenes agrupados en la investigación en calidad de semilleros continuaron la ruta de la publicación de apartes de los resultados, de los que van siendo partícipes, junto con el profesorado que alienta el espíritu investigativo de ellos y de los jóvenes becados en formación.
XIV Jornada de la Inve stigación, II Campamento de la Ciencia
Authors: Cabra Diana Carolina
Published: August 2021

En el segundo semestre de 2010,específicamente entre el 4 y el 8 de octubre, se llevó a cabo en la UPTC sede Tunja, el II campamento de la ciencia, el cual estaba inmerso en la Jornada de Investigación que lideraba la Universidad en manos de la Dirección de Investigaciones, con el apoyo de los centros de investigación, de los Jóvenes investigadores y de los semilleros de investigación. Este Campamento constituyo un espacio de visualización, proyección y debate en torno a la investigación, y a lo que cada uno según su nivel podría a portar para fortalecer la investigación en la Universidad,consolidándose este como un espacio de divulgación de conocimiento de los grupos de investigación, quienes hablaban de sus objetivos, los proyectos que habían realizado, los proyectos en curso y los que pensaban llevar a cabo, todo esto en aras de seguir fortaleciendo la academia
Remembranzas boyacenses “una propuesta para la masificación de los ritmos autóctonos del departamento de Boyacá ”
Authors: Herrera Hernández Luis Arcenio
Published: August 2021

El presente artículo surge de la experiencia pedagógica de Rumbambuquiando, agrupación musical conformada por estudiantes de la Licenciatura en Música de la UPTC, quienes desde el primer semestre de su carrera en el 2005 se mostraron inquietos por la nueva expresión de la música andina colombiana, explorando diferentes ritmos tradicionales e incorporando al formato tradicional (tiple, guitarra y bandola) instrumentos como la flauta traversa, la tambora y el contrabajo. Las personas que en ese momento integraban el grupo tenían una marcada tendencia al bambuco, más que a la rumba criolla, de ahí nace el nombre de la agrupación. Sin embargo, desde el comienzo estaba presente el interés por el folclor boyacense, teniendo en cuenta que la idea de crear un grupo de música carranguera surgió en el 2004 en un momento exploratorio en el que se encontraron el requinto, la guitarra y la voz. Para analizar esta experiencia pedagógica, se hará un recorrido conceptual por diferentes

aspectos relevantes en la consolidación de la propuesta de Rumbambuquiando, el formato, la definición y contextualización de la “carranga”,algunas particularidades

referidas a la identidad cultural, como un conflicto que atañe a la educación y la juventud, además de un análisis de la influencia del humor y la música comercial y cómo estos

han sido incluidos en la propuesta musical del grupo como herramienta para acercarse al público. Por último, se presentarán algunos estereotipos impuestos a la música

tradicional, abriendo así nuevos espacios que posibiliten el diálogo y la discusión, es decir, que la juventud piense su música y su cultura.
Registro de actividad frugivora de aves en miconiasp. (melastomataceae) en el borde de bosque secundario en el Parque Nacional Natural Serranía de los Yariguíes (santader-colombia)
Authors: Peña Cañón Ehidy Rocío , Rojas Sánchez Adriana , Triana Balaguera Erika Alexandra , Daza Criado Ledy Angélica
Published: August 2021

En desarrollo de esta investigación se observaron las especies de aves que visitan y dispersan los frutos de Miconia sp., reportando un total de doce especies de aves: Tangara arthus, Tangara nigroviridis, Tangara gyrola, Tangara parzudakii, Tangara cyanicollis, Tangara vitriolina, Tangara labradorides, Tangara vassorii, Tangara ruficervix, Anysognathus flavinucha, Tersina viridis y Euphonia xanthogaster, distribuidas en dos familias: Thraupidae y Fringilidae. Cabe resaltar que Tersina viridis es un nuevo reporte para el Parque Nacional Natural Serranía de los Yariguíes. Se registró un mayor número de visitas entre la una y las cinco de la tarde. De acuerdo con los datos obtenidos, se infiere que la duración de la visita está determinada por varios factores, entre los que se destacan el tipo de dieta de la especie, su coloración y sus factores de depredación. Igualmente, el éxito de la dispersión, reflejado en el tiempo de visita, se ve afectado principalmente por factores de depredación de las semillas.
Plan de gestión integral de residuos: un modelo de implementación universitaria
Authors: Olarte Avellaneda Sergio
Published: August 2021

El proyecto se encuentra en fase de desarrollo y estructuración de un Plan de Gestión Integral de Residuos para la Universidad Colegio Mayor de Cundinamarca (Bogotá), afin de optimizar los procesos en los programas de formación en que se utilizan sustancias químicas, específicamente, en los laboratorios de docencia. La transformación de talessustancias genera necesariamente la producción de residuos con propiedades químicas y físicas diferentes a las de los compuestos iniciales, a los cuales se les debe dar unaadecuada disposición final para no ocasionar problemas que afecten el desempeño laboral, la salud y el ambiente. Por otra parte, es importante considerar la posible recuperación de estos, puesto que en la actualidad la biotecnología y la educación ambiental son alternativas que se proyectan como fuente de soluciones.Palabras clavePlan de gestión Integral, sustancia química, residuo químico, biotecnología, educación ambiental. AbstractThe project is in stage of development of a Plan of Waste Integral Management for the University Colegio Mayor de Cundinamarca (Bogotá), in order to optimize processes intraining programs in which chemicals are used, specifically in teaching laboratories. The transformation of such substances necessarily generates waste production with physical and chemical properties different from those of the starting compounds, to which must be given a proper final disposition for not causing problems that affect job performance, health and the environment. On the other hand, it is important to consider the recovery of these, having into account that in the current, biotechnology and environmental education are alternatives projected as a source of solutions. KeywordsPlan of integral management, chemical, chemical residue, biotechnology, environmental education.
Conductividad eléctrica de carbón térmico a diferente humedad y tamaño de grano
Authors: Bautista N , González E , Bautista-Ruiz J , Peña-Rodríguez G
Published: August 2021

En este trabajo se reporta el desarrollo experimental para dos muestras de carbón térmico extraídas del área metropolitana de San José de Cúcuta, a las cuales se les se hizo el muestreo, cuarteo, secado y trituración con un molino mecánico. Posteriormente se determinó la composición fisicoquímica mediante el análisis próximo o inmediato, y,

por último, se midió la conductividad eléctrica a diferentes tamaños de grano y con diferentes porcentajes de humedad, observando la relación entre el potencial (voltaje) de entrada sobre la muestra, y la respuesta o potencial de salida de la misma (método de las cuatro puntas).
L’idée de religion universelle des origines au XIXe siècle : entre philologie et herméneutique
Authors: Szymański Tomasz
Published: August 2021

The aim of the article is to show the relationship between the classical conception of philology, the origins of hermeneutics and the evolution of the idea of universal religion from Antiquity to the 19th century. Just like in the context of the beginnings of Christianity philology contributed to create the Catholic understanding of this idea, in modern times, the development of philological methods contributed to the fragmentation of the idea in various fields: philosophical, esoteric, naturalistic or humanitarian. Hence, philology appears to be inseparable from hermeneutics and the history of religious ideas, and the latter, as inseparable from philology. In this context, the myth of the Babel Tower and its “confusion of tongues” may gain a new meaning.
Ȇtre chercheur en linguistique française en Pologne. Quelques remarques sur l’identité scientifique
Authors: Biardzka Elżbieta
Published: August 2021

This contribution deals with the problem of scientific identity understood as the adherence to a particular scientific community which shares, fundamentally and permanently, research concepts and working methods of its own. In this article, we try to show the specificity of the work of the researcher in French linguistics in Poland. It results from the differences between the linguistic spaces which circumscribe the theoretical and methodological research framework of French and Polish linguists.
Peculiarities of the socio-economic and political situation of non-rebel territories of Tambov Governorate in 1917–1921
Authors: Oblitsov Maxim A.
Published: August 2021

The relevance of the topic of food apportionment and the Antonov’s uprising is explained by the centenary of these events and the preservation of different approaches and opinions among historians on these issues. It is important to study the northern and western districts of the Tambov Governorate, which did not take a significant part in the Antonov’s uprising, since unde-servedly little attention is devoted to this topic. The main objectives of the study are to analyze the economic and economic situation in the “non-insurgent” counties in the context of their comparison with the southern counties (Tambovsky, Kirsanovsky and Borisoglebsky Counties) on the eve of the Tambov uprising of 1920–1921. To solve the set tasks, statistical information was used on the natural growth of the population, the size of cultivated areas, crop yields, etc. The significance of the work lies in the fact that the study adds more factual material about the reasons for the low level of social aggression among the peasantry of the northern and western counties on the eve of the insurrectionary movement in the Tambov Governorate.
Soviet foreign policy in 1937–1941: youth perception of the Tambov Region
Authors: Yakimov Kuzma A.
Published: August 2021

This work is devoted to the study of the characteristics of the young generation’s perception of the foreign policy of the Soviet leadership in 1937–1941. The specificity of the development of the image of a foreign enemy in the minds of young people is shown. The main mechanisms of the development of patriotic sentiments of young people are investigated. As the survey of public attitudes has shown, the majority of young men and women, despite the changes in foreign policy, were preparing for war. As a result of the active work of propaganda structures, the prestige of the army service increased, and the day of conscription became one of the most long-awaited moments of adolescence. A sense of duty and personal responsibility for the future of their homeland contributed to the strengthening of the conscious patriotism of the younger generation, which testified to the high efficiency of the entire system of military and patriotic education on the eve of the Great Patriotic War.
On application of the i-smooth analysis methodology to elaboration of numerical methods for solving functional differential equations
Authors: Kim Arkadii V.
Published: August 2021

The article discusses a number of aspects of the application of i -smooth analysis in the development of numerical methods for solving functional differential equations (FDE). The principle of separating finite- and infinite-dimensional components in the structure of numerical schemes for FDE is demonstrated with concrete examples, as well as the usage of different types of prehistory interpolation, those by Lagrange and Hermite. A general approach to constructing Runge–Kutta-like numerical methods for nonlinear neutral differential equations is presented. Convergence conditions are obtained and the order of convergence of such methods is established.
On stability of solutions of integral equations in the class of measurable functions
Authors: Merchela Wassim
Published: August 2021

Consider the equation G(x)=(y,) ̃ where the mapping G acts from a metric space X into a space Y, on which a distance is defined, y ̃ ∈ Y. The metric in X and the distance in Y can take on the value ∞, the distance satisfies only one property of a metric: the distance between y,z ∈Y is zero if and only if y= z. For mappings X → Y the notions of sets of covering, Lipschitz property, and closedness are defined. In these terms, the assertion is obtained about the stability in the metric space X of solutions of the considered equation to changes of the mapping G and the element y ̃. This assertion is applied to the study of the integral equation
f(t,∫_0^1▒K (t,s)x(s)ds,x(t))= y ̃(t),t ∈[0,1],
with respect to an unknown Lebesgue measurable function x: [0,1] ∈R. Sufficient conditions are obtained for the stability of solutions (in the space of measurable functions with the topology of uniform convergence) to changes of the functions f,K,(y.) ̃
Solution of a problem for a system of third order partial differential equations
Authors: Uskov Vladimir I.
Published: August 2021

An initial-boundary value problem for a system of third-order partial differential equations is considered. Equations and systems of equations with the highest mixed third derivative describe heat exchange in the soil complicated by the movement of soil moisture, quasi-stationary processes in a two-component semiconductor plasma, etc. The system is reduced to a differential equation with a degenerate operator at the highest derivative with respect to the distinguished variable in a Banach space. This operator has the property of having 0 as a normal eigenvalue, which makes it possible to split the original equations into an equation in subspaces. The conditions are obtained under which a unique solution to the problem exists; the analytical formula is found.
Lagrange principle and its regularization as a theoretical basis of stable solving optimal control and inverse problems
Authors: Sumin Mikhail I.
Published: August 2021

The paper is devoted to the regularization of the classical optimality conditions (COC) — the Lagrange principle and the Pontryagin maximum principle in a convex optimal control problem for a parabolic equation with an operator (pointwise state) equality-constraint at the final time. The problem contains distributed, initial and boundary controls, and the set of its admissible controls is not assumed to be bounded. In the case of a specific form of the quadratic quality functional, it is natural to interpret the problem as the inverse problem of the final observation to find the perturbing effect that caused this observation. The main purpose of regularized COCs is stable generation of minimizing approximate solutions (MAS) in the sense of J. Warga. Regularized COCs are: 1) formulated as existence theorems of the MASs in the original problem with a simultaneous constructive representation of specific MASs; 2) expressed in terms of regular classical Lagrange and Hamilton–Pontryagin functions; 3) are sequential generalizations of the COCs and retain the general structure of the latter; 4) “overcome” the ill-posedness of the COCs, are regularizing algorithms for solving optimization problems, and form the theoretical basis for the stable solving modern meaningful ill-posed optimization and inverse problems.
Maximal linked systems on products of widely understood measurable spaces
Authors: Chentsov Aleksandr G.
Published: August 2021

Maximal linked systems (MLS) of sets on widely understood measurable spaces (MS) are considered; in addition, every such MS is realized by equipment of a nonempty set with a π-system of its subsets with «zero» and «unit» (π-system is a nonempty family of sets closed with respect to finite intersections). Constructions of the MS product connected with two variants of measurable (in wide sense) rectangles are investigated. Families of MLS are equipped with topologies of the Stone type. The connection of product of above-mentioned topologies considered for box and Tychonoff variants and the corresponding (to every variant) topology of the Stone type on the MLS set for the MS product is studied. The properties of condensation and homeomorphism for resulting variants of topological equipment are obtained.
Toward a More Comprehensive View of α-Amylase across Decapods Crustaceans: New Insights from Carnivorous
Authors: Rodriguez-Viera Leandro , Alpízar-Pedraza Daniel , Mancera Juan Miguel , Perera Erick
Published: August 2021

Decapod crustaceans are a very diverse group and have evolved to suit a wide variety of diets. Alpha-amylases enzymes, responsible for starch and glycogen digestion, have been more thoroughly studies in herbivore and omnivore than in carnivorous species. We used information on the α-amylase of a carnivorous lobster as a connecting thread to provide a more comprehensive view of α-amylases across decapods crustaceans. Omnivorous crustaceans such as shrimps, crabs and crayfish present relatively high amylase activity respect to carnivorous. Yet, contradictory results have been obtained and relatively high activity in some carnivores has been suggested to be a remnant trait from ancestor species. Here we provided information sustaining that high enzyme sequence and overall architecture conservation do not allow high changes in activity, and that differences among species may be more related to number of genes and isoforms, as well as transcriptional and secretion regulation. However, recent evolutionary analyses revealed that positive selection might have also occurred among distant lineages with feeding habits as a selection force. Some biochemical features of decapod α-amylases can be related with habitat or gut conditions, while less clear patterns are observed for other enzyme properties. Likewise, while molt cycle variations in α-amylase activity are rather similar among species, clear relationships between activity and diet shifts through development cannot be always observed. Regarding the adaptation of α-amylase to diet, juveniles seem to exhibit more flexibility than larvae, and it has been described variation in α-amylase activity or number of isoforms due to the source of carbohydrate and its level in diets, especially in omnivore species. In the carnivorous lobster, however, no influence of the type of carbohydrate could be observed. Also, lobsters were not able to fine-regulate α-amylase gene expression in spite of large changes in carbohydrate content of diet, while retaining some capacity to adapt α-amylase activity to very low carbohydrate content in the diets. In this review, we raised arguments for the need of more studies on the α-amylases of less studied decapods groups, including carnivorous species which rely more on dietary protein and lipids, to broad our view of α-amylase in decapods crustaceans.
Impacts of COVID-19 on Diverse Farm Systems in Tanzania and South Africa
Authors: Tripathi Hemant G , Smith Harriet E , Sait Steven M. , Sallu Susannah M. , Whitfield Stephen , Jankielsohn Astrid , Kunin William E , Mazibuko Ndumiso , Nyhodo Bonani
Published: August 2021

Emerging information on the interactions between the COVID-19 pandemic and global food systems has highlighted how the pandemic is accentuating food crises across Africa. Less clear, however, are how the impacts differ between farming systems. Drawing on 50 key informant interviews with farmers, village leaders and extension officers, in South Africa and Tanzania, we identify the effects of COVID-19 and associated measures to curb the spread of the disease on farming production systems, the coping mechanisms adopted by farmers, and explore their longer-term plans for adaptation. We focus on a diverse range of production systems, from small-scale mixed farming systems in Tanzania, to large-scale corporate farms in South Africa. Our findings highlight how COVID-19 restrictions have interrupted the supply chains of agricultural inputs and commodities, increasing the storage time for produce, decreasing income and purchasing power, and reducing labour availability. Farmers’ responses were heterogeneous, with highly diverse small-scale farming systems and those less engaged with international markets least affected by the associated COVID-19 measures. Large-scale farmers were most able to access capital to buffer short-term impacts, whereas smaller-scale farms shared labour, diversified to subsistence produce and sold assets. However, compounded shocks, such as recent extreme climate events, limited the available coping options, particularly for smaller-scale and emerging farmers. The study highlights the need to understand the characteristics of farm systems to better equip and support farmers, particularly in contexts of uncertainty. We propose that policy actions should focus on (i) providing temporary relief and social support and protection to financially vulnerable stakeholders, (ii) job assurance for farmworkers, and engaging an alternative workforce in farming, (iii) investing in farming infrastructure, such as storage facilities, digital communication tools, and extension services, and iv) supporting diversified agroecological farming systems.
Towards Transforming Agriculture for Challenges of 21st Century by Optimizing Resources Using IOT, Fuzzy Logic and Network Coding
Authors: Syed Abidhusain , Zakir Ali Syed
Published: August 2021

Climate risk is one of the confronting factors in Indian agriculture. To overcome this distrust, a large number of sensors can be installed in the fields,The extensive IoT platform can process the data sent by these sensors.The Data stream can be processed in real-timeusing Fuzzylogic, to offer smart solution. Network coding can enhance throughput and security. Thus reducing human interaction and improve efficiency.
Protein Structure Readouts of Cancer Drivers for Precision Medicine
Authors: Dhanjal Jaspreet Kaur , Kalra Rajkumar Singh
Published: August 2021

Cancer is fundamentally a disease of perturbed genes. Although many mutations can be marked in the genome of a cancer or transformed cell, the initiation and progression were shown to be driven by only a few mutational events viz. driver mutations that progressively govern and execute the functional impacts. The driver mutations are thus believed to dictate and dysregulate the subsequent cellular proliferative function/decisions thereby producing a cancerous state. Therefore, identifying the driver events from the genomic alterations in a patient’s cancer cell gained large attention recently for designing better targeting therapies towards paving way for the precision cancer medicine. With rolling advancements in high-throughput omics technologies, analysis of genetic variations and gene expression profiles for cancer patients has become a routine clinical practice. However, it is anticipated that protein structural alterations resulting from such driver mutations can provide more direct and clinically relevant evidence of disease states than genetic signatures alone. This review comprehensively discusses various aspects and approaches that have been developed for the prediction of cancer drivers using genetic signatures and protein structures, and their potential application in developing precision cancer therapies.Keywords:
Antimicrobial Face Shield: Next Generation of Facial Protective Equipment against SARS-CoV-2 and Multidrug-Resistant Bacteria
Authors: Tuñón-Molina Alberto , Martí Miguel , Muramoto Yukiko , Noda Takeshi , Takayama Kazuo , Serrano-Aroca Ángel
Published: August 2021

Transparent materials used for facial protection equipment provide protection against microbial infections caused by viruses and bacteria, including multidrug-resistant strains. However, transparent materials used for this type of application are made of materials that do not possess antimicrobial activity. They just avoid direct contact between the person and the biological agent. Therefore, healthy people can get infected through contact of the contaminated material surfaces and this equipment constitute an increasing source of infectious biological waste. Furthermore, infected people can transmit microbial infections easily because the protective equipment do not inactivate the microbial load generated while breathing, sneezing, or coughing. In this regard, the goal of this work consisted of fabricating a transparent face shield with intrinsic antimicrobial activity that could provide extra-protection against infectious agents and reduce the generation of infectious waste. Thus, a single-use transparent antimicrobial face shield composed of polyethylene terephthalate and an antimicrobial coating of benzalkonium chloride has been developed for the next generation of facial protective equipment. The antimicrobial coating was analyzed by atomic force microscopy and field emission scanning electron microscopy with elemental analysis. This is the first facial transparent protective material capable of inactivating enveloped viruses such as SARS-CoV-2 in less than one minute of contact, and the methicillin-resistant Staphylococcus aureus and Staphylococcus epidermidis. Bacterial infections contribute to severe pneumonia associated with the SARS-CoV-2 infection, and their resistance to antibiotics is increasing. Our extra protective broad-spectrum antimicrobial composite material could also be applied for the fabrication of other facial protective tools such as such as goggles, helmets, plastic masks and space separation screens used for counters or vehicles. This low-cost technology would be very useful to combat the current COVID-19 pandemic and protect health care workers from multidrug-resistant infections in developed and underdeveloped countries.
Chemical Treatment of Black Tiger nut Tubers (Cyperus esculentus) Variety to Obtain a Bio-based Product
Authors: Djomdi No name , Ejoh Richard , Pierre Guillaume , Delattre Cédric , Michaud Philippe , Ndjouenkeu Robert
Published: August 2021

Black variety of tiger nut tubers (Cyperus esculentus) were differently processed in ascorbic acid and alkaline (Ca(OH)2 and Kanwa) solutions at different concentrations and temperatures. The effect of these treatments on the water content (swelling), soluble loss, dehulling efficiency and microbial load was investigated. Water content or swelling of the tiger nut soaked in acid and alkaline solutions can be predicted by Peleg model like with brown variety. This swelling lead to enhance dehulling efficiency of tuber but caused soluble solute loss overall at the highest temperature of soaking in vitamin C solution. Like soaking in water, the constant of Peleg (k1) decrease with the increase of the temperature of soaking, whereas the constant of capacity of Peleg (k2) is approximately 0.018% for all the conditions. Dehulling efficiency also increased with increasing temperatures (65% at 20°C to 70% at 60°C) for tiger nut tubers soaked in water (0 g/L), dehulling efficiency appeared most strongly affected by concentrations and temperatures of soaking solutions. Like dehulling efficiency, ascorbic solutions has given the best results in term of reduction of microbial load compared to the other soaking solutions. This reduction is considerable at the higher temperatures, reaching a maximum of 4.8 log reduction. Soaking and dehulling treatments gave to tiger nut tuber effective decontamination in term of microbial load and obtained good microbiological quality for final process.
Gastrointestinal Involvement in Systemic Sclerosis
Authors: Nassar Mahmoud , Ghernautan Victoria , Nso Nso , Nyabera Akwe , Medina Luis , Tu Wan , Ciobanu Camelia , Castillo Francisco , Rizzo Vincent , Eskaros Saphwat
Published: August 2021

Introduction: The gastrointestinal tract (GI) is the second most affected organ system in systemic sclerosis or systemic/localized scleroderma (SSc) and is an important topic for research. Approximately 90% of patients with scleroderma exhibit pathology of the GI tract. The systemic scleroderma has the potential to impact any part of the gastrointestinal tract, between the oral cavity and anorectum. The pathological complications of scleroderma adversely impact the health-related quality of life of the affected patients and increase the treatment burden of patients and medical professionals. Study Aim: We summarized the epidemiology, commonly reported clinical manifestations, complications, and available therapies for treating the GI pathology in systemic scleroderma patients. Methodology: We performed a literature review using the keywords "systemic sclerosis," "scleroderma," "GI manifestations in scleroderma," and "GI complications of scleroderma" across databases, including Google Scholar, Medline, Embase, and PubMed. We also analyzed a range of case reports concerning scleroderma manifestations and treatment modalities. Results: Our research revealed the annual incidence of SSc attributing to19.3 cases per million adults in the United States. We found the highest incidence of systemic scleroderma in patients within the age range of 44-55 years. Our results affirmed 5:1 incidence of systemic scleroderma that confirmed the higher impact of this disease condition in females than male populations. We found that the gastrointestinal manifestations of systemic scleroderma predominantly elevate the morbidity and mortality incidence among the affected patients. Esophageal and intestinal manifestations impact 90% and 40-70% of patients with systemic scleroderma. The small bowel hypomotility and small intestinal bacterial overgrowth (SIBO) in systemic scleroderma cases trigger the episodes of malabsorption and malnutrition that eventually add to 50% of the mortality rate. Systemic sclerosis is associated with the high incidence of fecal incontinence that triggers depression and its deleterious mental health manifestations in many clinical scenarios. Conclusion: The gastrointestinal complications in systemic sclerosis potentially deteriorate the daily living activities of the affected patients. The systematic management of the gastrointestinal complications of systemic scleroderma warrants multidisciplinary approaches. Prospective studies should focus on developing targeted therapies for improving the recovery patterns and prognostic outcomes in systemic scleroderma cases.
Localisation of Room Occupants in Home Environments using Unobtrusive Sensing Solutions
Authors: Ekerete Idongesit , Nugent Chris , McLaughlin James
Published: August 2021

This paper proposes the localisation of room occupants in home environments using Unobtrusive Sensing Solutions (USSs). The ability to localise room occupants in home environments can help in the objective monitoring of sedentary behaviour. While wearable sensors can provide tangible information on health and wellness, they have battery life issues and the inability to perform prolonged monitoring. This work uses heterogeneous USSs in the form of an Infrared Thermopile Array (ITA-64) thermal sensor and a Multi-Chirp Frequency Modulated Continuous Wave Mono-pulse (MC-FMCW-M) Radar sensor to monitor room occupants. Digital filters and background subtraction algorithms were used to process the thermal images gleaned from the ITA-64 thermal sensors. The MC-FMCW-M Radar sensor used multi-chirp and Doppler shift principles to estimate the exact location of the targeted room occupants. The estimated distances from the Radar Sensor were compared with ground truth values. Experimental results demonstrated the ability to identify thermal blobs of occupants present in the room at any particular time. Data analyses indicated no significant difference (p = 0.975) and a very strong positive correlation (r = 0.998) between the ground truth distance values and those obtained from the Radar Sensor.
A Survey of Wireless Battery Management System: Topology, Emerging Trends, and Challenges
Authors: Samanta Akash , Williamson Sheldon S.
Published: August 2021

An effective battery management system (BMS) is indispensable for any lithium-ion battery (LIB) powered systems such as electric vehicles (EVs) and stationary grid-tied energy storage systems. Massive wire harness, scalability issue, physical failure of wiring, and high implementation cost and weight are some of the major issues in conventional wired-BMS. One of the promising solutions researchers have come up with is the wireless BMS (WBMS) architecture. Despite research and development on WBMS got momentum more than a decade ago, it is still in a preliminary stage. Significant further upgradation is still required towards developing an industry-ready WBMS, especially for high-power LIB packs. Therefore, an in-depth survey exclusively on WBMS architectures is presented in this article. The aim is to provide a summary of the existing developments as well as to present an informative guide to the research community for future development by highlighting the issues, emerging trends, and challenges. In-depth analysis of the existing WBMS topologies will not only help the researchers to understand the existing challenges and future research scopes clearly while at the same time enthuse them to focus their research inclination in the domain of WBMS.
Direct Use of Clinical Tolerance Limits for Assessing Agreement: A Robust Nonparametric Approach
Authors: Indrayan Abhaya
Published: August 2021

Clinical agreement between two quantitative measurements on a group of subjects is generally assessed with the help of the Bland-Altman (B-A) limits. The interpretation regarding agreement is based on whether B-A limits are within the pre-specified clinical tolerance. Thus, clinical tolerance limits are necessary for this method. We argue in this communication that such limits of clinical tolerance can be directly used for assessing agreement and plead that this nonparametric approach is simple and robust to the distribution pattern and outliers. Such direct use of clinical tolerance limits has more flexibility, and it is more effective in assessing the extent of agreement.
Educational Data Mining, Student Academic Performance Prediction, Prediction Methods, Algorithms and Tools: An Overview of Reviews
Authors: Chaka Chaka
Published: August 2021

This overview study set out to compare and synthesise the findings of review studies conducted on predicting student academic performance (SAP) in higher education using educational data mining (EDM) methods, EDM algorithms and EDM tools from 2013 to June 2020. It conducted multiple searches for suitable and relevant peer-reviewed articles on two online search engines, on nine online databases, and on two online academic social networks. It, then, selected 26 eligible articles from 2,050 articles. Some of the findings of this overview study are worth mentioning. First, only 2 studies explicitly stated their precise sample sizes with maths and science as the two most mentioned subject areas. Second, 16 review studies had purposes related to either EDM techniques, EDM methods, EDM models, or EDM algorithms employed to predict SAP and student success in the higher education sector. Third, there are six commonly used typologies of input variables reported by 26 review studies, of which student demographics was the most commonly utilised variable for predicting SAP. Fourth and last, seven common EDM algorithms employed for predicting SAP were identified, of which Decision Tree emerged both as the most used algorithm and as the algorithm with the highest prediction accuracy rate for predicting SAP.
Micropropagation of Rare Scutellaria Havanensis Jacq. And Preliminary Studies on Antioxidant Capacity and Anti-cancer Potential
Authors: Irvin Lani , Zavala Ortiz Yarelia , Rivera Kamila Rivera , Nanda Vaidya Brajesh , Sherman Samantha H , Negron Berrios Juan A , Joshee Nirmal , Arun Alok
Published: August 2021

We report the development of in vitro propagation protocols through adventitious shoot induction pathway for a rare and medicinal Scutellaria havanensis. In vitro propagation studies using nodal explants showed MS medium supplemented with 10µM 6-Benzylaminopurine induced highest number of adventitious shoots in a time dependent manner. A ten - day incubation was optimum for shoot bud induction as longer exposures resulted in hyperhydricity of the explants and shoots induced. We also report preliminary evidence of Agrobacterium tumefaciens EHA105 - mediated gene transfer transiently expressing of green fluorescent protein in this species. Transformation studies exhibited amenability of various explant tissues, internode being the most receptive. As the plant has medicinal value, research was carried out to evaluate its potential antioxidant capacity and the efficacy of methanolic leaf extracts in curbing the viability of human colorectal cancer cell line HCT116. Comparative total polyphenol, and flavonoid content measurement of fresh and air dried leaf extract revealed that the fresh leaf extracts contain higher total polyphenol and flavonoid content. The HCT 116 cell viability assessed by colorimetric assay using a 3-(4, 5-dimethyl-thiazol-2-yl)-2, 5-diphenyltetrazolium bromide, showed a steady growth inhibition after 24 hours of incubation. Scanning Electron Microscopy of leaf surface revealed high density of glandular and non-glandular trichomes. This research provides basis for the conservation of this rare plant and future phytochemical screening and clinical research.
Pengaruh Gaya Kognitif Terhadap Hasil Belajar Kimia pada Materi Redoks dengan Menggunakan Model Contextual Teaching and Learning
Authors: Olgarinda Sekarrini  , Hadinugrahaningsih Tritiyatma , Muhab Sukro
Published: August 2021

Penelitian ini bertujuan untuk mengetahui perbandingan hasil belajar kimia pada materi redoks antara siswa yang memiliki gaya kognitif Field Dependent dengan Field Independent pada model Contextual Teaching and Learning. Penelitian ini dilakukan di kelas X MIA, SMA Negeri 36 Jakarta. Metode penelitian yang digunakan adalah kuantitatif dengan teknik komparasi. Pengambilan sampel dalam penelitian ini menggunakan teknik purposive sampling. Pembelajaran yang digunakan pada dua kelas adalah model Contextual Teaching and Learning. Instumen yang digunakan berupa Group Embedded Figure Test (GEFT) dan post-test. Data yang diperoleh dianalisis menggunakan uji-t. Rata-rata hasil belajar yang diperoleh siswa dengan gaya kognitif Field Independent adalah 80,77 dan pada siswa dengan gaya kognitif Field Dependent adalah 54,58. Hasil penelitian menunjukkan adanya perbedaan hasil belajar siswa antara siswa dengan gaya kognitif Field Independen dengan siswa dengan gaya kognitif Field Dependent (thitung = 10,62; ttabel = 1,68, thitung > ttabel). Sehingga dapat disimpulkan bahwa gaya kognitif  dapat berpengaruh positif pada hasil belajar siswa pada materi redoks dengan model Contextual Teaching and Learning.

Kata kunci: Gaya Kognitif, Hasil Belajar, Redoks
Pengaruh Model Pembelajaran Problem Based Learning Berkonteks Socio Scientific Issues Terhadap Kemampuan Literasi Sains Siswa pada Materi Asam Basa
Authors: Dinda Nur Azizah  , Irwandi Dedi , Saridewi Nanda
Published: August 2021

Penelitian ini dilatar belakangi rendahnya kemampuan literasi sains siswa Indonesia berdasarkan hasil PISA. Penelitian ini bertujuan untuk mengetahui pengaruh model Pembelajaran Problem Based Learning (PBL) berkonteks Socio Scientific Issues (SSI) terhadap kemampuan literasi sains siswa pada materi asam basa. Penelitian ini dilaksanakan di SMAN 28 Kabupaten Tangerang. Metode penelitian yang digunakan adalah quasi eksperiment dengan desain penelitian nonequivalent control group desain. Sampel diambil menggunakan teknik purposive sampling. Data diperoleh dari tes esai yang berisi 13 item yang terkait dengan kemampuan literasi sains. Data yang diperoleh dianalisis dengan uji independent sample t-test. Hasil uji independent sampel t-test menunjukkan nilai sig  < 0,05 pada taraf signifikansi 5% maka H1 diterima. Hasil ini menunjukkan bahwa terdapat pengaruh yang signifikan model PBL berkonteks SSI terhadap kemampuan literasi sains siswa pada materi asam basa.

Kata kunci: Problem Based Learning (PBL), Socio Scientific Issues (SSI), Kemampuan Literasi Sains, Asam Basa
Peningkatkan Prestasi Belajar Peserta Didik dengan Penerapan Model Pembelajaran Kooperatif Formulate, Share, Listen and Create (FSLC)s pada Pokok Bahasan Kesetimbangan Ion dan pH Larutan Garam di Kelas XI MIA SMA Negeri 4 Pekanbaru
Authors: Ariani Desy , Azmi Johni , Linda Roza
Published: August 2021

Peningkatkan prestasi belajarHpeserta didikadenganitudipenerapandimodel pembelajaran kooperatif Formulate,OShare,CListen andinsCreate (FSLC)s padadmpokoksdsbahasan kesetimbangansdion dan pH larutan”garam di kelas XI MIA SMAnNegeri 4 PekanbaruUdengan metode penelitian eksperimen designLrandomized control group pretest-posttest terhadap dua kelas yang homogen. Sampel dari”penelitian adalah peserta didik kelas XI MIA 7 dan XI MIA 8. Uji hipotesis menggunakantuji-t menunjukkan bahwa terdapat perbedaan peningkatan prestasi belajar kelas kontrol dangkelas eksperimen diperoleh nilai thitung >ttabel yaitu 5,66>1,67 pada dk = 36 + 35 – 2 = 69. Hasil penelitian menunjukkan bahwa penerapan modelupembelajaran kooperatifBFSLC dapat meningkatkan prestasi belajar peserta didik pada pokok bahasan kesetimbangan ion dan pH larutan garam dengan kategori peningkatan prestasi belajar berdasarkan skor N-gainssebesar 0,75 berada pada kategori”tinggi.

Kata kunci: Pembelajaran Kooperatif FSLC, Prestasi Belajar, Kesetimbangan Ion dan pH Larutan Garam
Ekonomik Güven Endeksi ve Finansal Yatırım Araçları Reel Getirileri Arasındaki Zamanla Değişen Nedensellik İlişkisi: Türkiye Örneği
Authors: DEMİR Fatih
Published: August 2021

Bu çalışma yatırımcı duyarlılığı ve finansal yatırım araçları arasındaki nedensellik ilişkisini incelemeyi amaçlamaktadır. Yatırımcı duyarlılığını temsilen ekonomik güven endeksi (EGE), finansal yatırım araçları olarak mevduat, hisse senedi, döviz (Dolar/TL ve Avro/TL), altın ve devlet iç borçlanma senedi (DİBS) reel getirileri kullanılmıştır. Veriler 2007-2020 dönemini kapsamakta ve aylık frekanslıdır. Hacker ve Hatemi-J (2012) bootstrap nedensellik testi bulgularına göre EGE sadece DİBS getirisinin nedenidir. Buradan hareketle EGE’nin bir öncü gösterge niteliği taşımadığı söylenebilir. Ayrıca hisse senedi, döviz ve DİBS getirilerinden EGE’ye doğru nedensellik ilişkisine rastlanmıştır. Ek olarak, veri dönemi boyunca değişkenler arası nedensellik ilişkilerinde değişiklikler olabileceği düşüncesinden hareketle kayan pencereler yaklaşımına dayalı zamanla değişen bootstrap nedensellik testi uygulanmıştır. Yapılan değerlendirmeler sonucunda ekonomiye olan güvenin olumsuz seyir izlediği dönemlerde EGE ve finansal yatırım araçları getirileri arasında nedensellik ilişkileri ortaya çıkmaktadır.