bluuebunny/crossref_metadata_2025 huggingface dataset:
MONOCAPAS AUTO-ENSAMBLADAS DE ALQUENOS EN SUPERFICIES HIDROGENADAS DE SILICIO (100)
Authors: Obregón Rodríguez Yris Del Pilar , Mayor Sánchez César R.
Published: February 2020

La preparación en la formación de monocapas auto-ensambladas en las superficies de silicio nos ha permitido el avance tecnológico de nuevos materiales semiconductores orgánicos, obteniéndose dispositivos que sobresalen por sus propiedades eléctricas a escala nanométrica1. Para esta investigación, se consideró la reacción entre alquenos y la superficie hidrogenada de Si (100) para formar monocapas orgánicas auto-ensambladas2. Las moléculas orgánicas de alquenos que se utilizaron fueron 1-dodeceno, 1-tetradeceno, 1-hexadeceno y 1-octadeceno, los cuales resaltan para el proceso de funcionalización de estas películas orgánicas. Para el tratamiento de la superficie de silicio se tomó en cuenta una previa reacción de hidrogenación3,4, obteniéndose grupos funcionales Si-H en la superficie. Respecto a la reacción de formación de la monocapa orgánica, el sustrato de silicio de superficie hidrogenada reaccionó con cada uno de los alquenos5 mencionados a 220oC por 2 horas. Las técnicas experimentales usadas como la técnica de AFM (Atomic Force Microscopy), la medición del ángulo de contacto entre gotas de agua y el sustrato, y el step potential nos verifican la presencia de la superficie hidrogenada y las monocapas orgánicas auto-ensambladas en la superficie.
ESTUDIO TEÓRICO DE LAS PROPIEDADES ELECTRÓNICAS EN 4-X-1,2-BENZOQUINONAS SUSTITUIDAS
Authors: Ruíz Ronald , Lezama Hélmer , Pumachagua Rodolfo
Published: February 2020

En este trabajo se analiza descriptores globales como la dureza, electronegatividad, nucleofilia y potencial químico, e índices de reactividad local. Utilizamos la Teoría del Funcional de Densidad (DFT) a un nivel de cálculo B3LYP/6-31G. Con los índices de reactividad local se analiza el carácter nucleófilo/electrófilo por efecto de grupos sustituyentes sobre el sistema 1,2-benzoquinona. Con los descriptores globales de reactividad, se obtiene relaciones de correlación aceptables así como el efecto de los grupos sustituyentes sobre el espectro Uvvis.
PREPARACIÓN DE CATALIZADORES BASADOS EN VANADIL FOSFATOS DE Fe SOPORTADOS SOBRE γ-Al2O3 PARA LA DESHIDROGENACIÓN OXIDATIVA DEL ETANO
Authors: Baldeón Iván , Sun-Kou Rosario , Picasso Gino
Published: February 2020

Se han preparado catalizadores basados en vanadil fosfatos para la deshidrogenación oxidativa (ODH) de etano a etileno. Los catalizadores másicos VOP (VOPO4.2H2O), FeVOP(1) (Fe0.14VO0.86PO4) y FeVOP(2) (Fe0.21VO0.79PO4) fueron sintetizados por el método de Ladwig que consiste en la preparación del vanadilfosfato en reflujo con el ácido fosfórico. Los catalizadores soportados sobre γ-Al2O3 (FeVOP-Al) fueron preparados mediante el método de impregnación húmeda incipiente. A partir de los resultados de XRD, los catalizadores másicos presentaron estructuras cristalinas descritas por el ordenamiento de los tetraedros de PO4 y de los octaédricos VO6. El análisis TPR reveló que la introducción del Fe a la estructura del VOP forma especies menos reducibles, y en el caso de los soportados, el incremento de la fase activa aumentó linealmente con el consumo de H2. La influencia del soporte de γ-Al2O3 en los catalizadores preparados basados en hierro vanadil fosfato permitió la formación de centros activos y selectivos a etileno en la reacción ODH del etano, como consecuencia de la formación de sitios ácidos débiles e intermedios y a interacciones catalizador-soporte. La actividad y selectividad a etileno en la mejor muestra soportada creció hasta 46,8 y 27,3 % frente a un valor de 9,8 y 21,4 % en la muestra másica equivalente.
CARACTERIZACIÓN BIOQUÍMICA, BIOLÓGICA Y MOLECULAR DEL FACTOR DIFUSOR PRESENTE EN EL VENENO DE LA SERPIENTE Bothrops atrox “JERGÓN”
Authors: Delgadillo Julio , Vivas Dan , Rodríguez Edith , Lazo Fanny , Yarlequé Armando , Sánchez E. F.
Published: February 2020

La hialuronidasa del veneno de Bothrops atrox fue purificada y caracterizada. Se estudió el efecto de iones monovalentes y divalentes en su actividad catalítica, mostrando que el ion magnesio (150 mM) incrementa la actividad en 40 %, mientras que la glicina lo inhibe en un 44 %. La enzima carece de actividad tóxica cuando es administrada en ratones albinos en ensayos de toxicidad, pero incrementa la acción hemorrágica del veneno total sobre la piel de estos animales. El antiveneno botrópico polivalente, Perú) fue capaz de reconocer componentes del veneno total de B. atrox, así como la enzima purificada, en ensayos de inmunodifusión. El cDNA que codifica para esta hialuronidasa se obtuvo a partir de mRNA extraído del veneno fresco, y secuenciado. El análisis de la secuencia de cDNA, de 2020 pb, muestra que contiene un ORF de 1350 pb que codifica para una pre-enzima de 449 aminoácidos, cuyo procesamiento, posiblemente, resulta en una enzima madura de 429 aminoácidos, masa molecular 50 kDa y pI de 9,19, indicando su naturaleza básica, y con 4 probables sitios de N-glicosilación (Asn103, Asn111, Asn153 y Asn357).
ALTERNATIVAS DE PRETRATAMIENTO TEXTIL: MÉTODO INTEGRADO DE DESCRUDE-BLANQUEO Y BLANQUEO QUÍMICO-ENZIMÁTICO, EVALUACIÓN Y COMPARACIÓN CON EL MÉTODO CLÁSICO
Authors: Orcón Basilio Beatriz , Giraldo Borja Mariel , Flores Rúa Eduardo , Ynca Berrospi Anthony
Published: February 2020

En la Universidad Nacional de Ingeniería (Laboratorio Textil N° 24) se realizaron ensayos de pretratamiento para descrude y blanqueo, utilizando como materia prima un tejido de ligamento jersey elaborado con algodón Pima de título 30/1 Ne. Se desarrollaron los procesos de descrude y blanqueo para la obtención de un material hidrófilo con un grado de blancura tal que permita el óptimo teñido de blancos y colores claros. Los ensayos de pre tratamiento se desarrollaron haciendo uso de material de vidrio diverso y agitación manual, mientras que el proceso de tintura se realizó en una máquina Conmatex con movimiento vertical. Para evaluar el grado de blanco, se utilizó el espectrofotómetro Datacolor 550, software Color Tools versión: 1.1.1. Se realizaron tres procesos de blanqueo: clásico o referencial, que consiste en descrude y blanqueo separados; integrado, que considera descrude y blanqueo en un solo baño; y enzimático, donde la enzima activa la formación de peróxido, con fase previa de descrude. Al evaluar absorción y capilaridad, se concluye que el método enzimático tiene resultados similares a los del método clásico, pero mejores que el integrado. La pérdida de peso de los métodos clásico y enzimático es mayor que el método integrado debido a la fase previa de descrude. Los mejores valores para grado de blancura los registró el método clásico seguido del método enzimático y la prueba de teñido comprueba que el color obtenido mediante ambos métodos está en un rango aceptable. El impacto en los efluentes medido a través del DBO5 registró valores menores para el método enzimático.
REMOCIÓN DE MATERIA ORGÁNICA EN REACTOR ANAEROBIO DE MANTO DE LODOS DE FLUJO ASCENDENTE EN EL TRATAMIENTO DE AGUAS RESIDUALES DEL CAMAL DE HUANCAVELICA
Authors: Castro Olarte Jerson , Cecilio Cabrera Yon , Gonzales Huamán Teresa Jesús , Sumarriva Bustinza Liliana
Published: February 2020

En la presente investigación se evaluó un nuevo sistema de tratamiento primario para aguas residualesindustriales,se utiliza el “Reactor anaerobio de manto de lodos de flujo ascendente” (UASB), aplicado a la remoción de materia orgánica. El sistema a escala piloto fue diseñado para las aguas residuales del Camal Municipal de Huancavelica, el cual se bombeó después del pre tratamiento (cámara de reja gruesa y desarenador) al tanque de almacenamiento de 350 litros para realizar el tratamiento del agua residual en el reactor UASB a escala laboratorio. Se evaluó la eficiencia de remoción de materia orgánica en un reactor UASB, para un tiempo de retención hidráulico (TRH) de 14 horas con un caudal de circulación de 35mL/min se obtuvo una eficiencia mínima de remoción de Demanda Química de Oxígeno (DQO) de 33,66 % y una máxima eficiencia de 76,90 % todo ello en un rango de temperatura de agua residual de 10°C y 19°C. También para este TRH de 14 horas la cantidad de sólidos suspendidos totales disminuyó de 524,34mg/L a 365,04mg/L, obteniéndose una eficiencia de remoción de sólidos suspendidos totales de 30,28%. El tratamiento primario reactor UASB es una alternativa para remover la materia orgánica y sólidos suspendidos totales, aplicado para aguas residuales del Camal Municipal de Huancavelica y en localidades con condiciones de clima y altitud similares; el diseño se optimizó para un TRH de 14 horas para el reactor UASB el cual elevó la eficiencia de remoción de materia orgánica.
Identification of Possible Stellar Companions via Speckle Interferometry in a Sample of Be Stars
Authors: Souza T. B. , Guerrero C. A. , Borges Fernandes M.
Published: February 2020

We present speckle interferometric measurements of Be stars made with the 1.60 m Perkin-Elmer telescope at the Pico dos Dias Observatory of the Laboratório Nacional de Astrofísica in Brazil. Using three different filters (V, R, and I), we obtained astrometric measurements for 23 stars, during three observing runs allocated in 2017 March, 2018 April, and 2019 July. We identified pairs with angular separation ranging from 0.″10 to 6.″69, including six systems with separations smaller than 1.″0. We estimated a mean error in separation of 15 mas, 1.°2 in position angle, and 0.29 mag for the magnitude difference. We discovered three new possible double systems that are not identified in the literature: HD 174886, HD 159032, and HD 168135 with an average angular separation of 0.″20, 3.″23, and 5.″41, respectively. In addition, we identified four new pairs in multiple systems previously known in the Washington Double Star Catalog. However, for 16 stars of our sample, we did not find evidence of binarity, based on the diffraction-limited resolution, the field of view, and/or the sensitivity of our observations. From the cross-match with data from Gaia Data Release 2, we verified the possibility of some of these systems be gravitationally bound or not.
Dynamical Classification of Trans-Neptunian Objects Detected by the Dark Energy Survey
Authors: Khain T. , Becker J. C. , Lin 林 Hsing Wen 省文 , Gerdes D. W. , Adams F. C. , Bernardinelli P. , Bernstein G. M. , Franson K. , Markwardt L. , Hamilton S. , Napier K. , Sako M. , Abbott T. M. C. , Avila S. , Bertin E. , Brooks D. , Buckley-Geer E. , Burke D. L. , Carnero Rosell A. , Carrasco Kind M. , Carretero J. , Costa L. N. da , Vicente J. De , Desai S. , Diehl H. T. , Doel P. , Flaugher B. , Frieman J. , García-Bellido J. , Gaztanaga E. , Gruen D. , Gruendl R. A. , Gschwend J. , Gutierrez G. , Hollowood D. L. , Honscheid K. , James D. J. , Kuropatkin N. , Maia M. A. G. , Marshall J. L. , Menanteau F. , Miller C. J. , Miquel R. , Plazas A. A. , Sanchez E. , Scarpine V. , Schubnell M. , Sevilla-Noarbe I. , Smith M. , Sobreira F. , Suchyta E. , Swanson M. E. C. , Tarle G. , Walker A. R. , Wester W. ,   The Dark Energy Survey Collaboration
Published: February 2020

The outer solar system contains a large number of small bodies (known as trans-Neptunian objects or TNOs) that exhibit diverse types of dynamical behavior. The classification of bodies in this distant region into dynamical classes—subpopulations that experience similar orbital evolution—aids in our understanding of the structure and formation of the solar system. In this work, we propose an updated dynamical classification scheme for the outer solar system. This approach includes the construction of a new (automated) method for identifying mean motion resonances. We apply this algorithm to the current data set of TNOs observed by the Dark Energy Survey (DES) and present a working classification for all of the DES TNOs detected to date. Our classification scheme yields 1 inner centaur, 19 outer centaurs, 21 scattering disk objects, 47 detached TNOs, 48 securely resonant objects, 7 resonant candidates, and 97 classical belt objects. Among the scattering and detached objects, we detect 8 TNOs with semimajor axes greater than 150 au.
Exploring Whether Super-puffs can be Explained as Ringed Exoplanets
Authors: Piro Anthony L. , Vissapragada Shreyas
Published: February 2020

An intriguing, growing class of planets are the “super-puffs,” objects with exceptionally large radii for their masses and thus correspondingly low densities (≲0.3 g cm−3). Here we consider whether they could have large inferred radii because they are in fact ringed. This would naturally explain why super-puffs have thus far only shown featureless transit spectra. We find that this hypothesis can work in some cases but not all. The close proximity of the super-puffs to their parent stars necessitates rings with a rocky rather than icy composition. This limits the radius of the rings, and makes it challenging to explain the large size of Kepler 51b, 51c, 51d, and 79d unless the rings are composed of porous material. Furthermore, the short tidal locking timescales for Kepler 18d, 223d, and 223e mean that these planets may be spinning too slowly, resulting in a small oblateness and rings that are warped by their parent star. Kepler 87c and 177c have the best chance of being explained by rings. Using transit simulations, we show that testing this hypothesis requires photometry with a precision of somewhere between ∼10 ppm and ∼50 ppm, which roughly scales with the ratio of the planet and star’s radii. We conclude with a note about the recently discovered super-puff HIP 41378f.
Modeling the Infrared Reverberation Response of the Circumnuclear Dusty Torus in AGNs: An Investigation of Torus Response Functions
Authors: Almeyda Triana , Robinson Andrew , Richmond Michael , Nikutta Robert , McDonough Bryanne
Published: February 2020

The size and structure of the dusty circumnuclear torus in active galactic nuclei (AGNs) can be investigated by analyzing the temporal response of the torus’s infrared (IR) dust emission to variations in the AGN ultraviolet/optical luminosity. This method, reverberation mapping, is applicable over a wide redshift range, but the IR response is sensitive to several poorly constrained variables relating to the dust distribution and its illumination, complicating the interpretation of measured reverberation lags. We have used an enhanced version of our torus reverberation mapping code (TORMAC) to conduct a comprehensive exploration of the torus response functions at selected wavelengths, for the standard interstellar medium grain composition. The shapes of the response functions vary widely over the parameter range covered by our models, with the largest variations occurring at shorter wavelengths (≤4.5 μm). The reverberation lag, quantified as the response-weighted delay (RWD), is most affected by the radial depth of the torus, the steepness of the radial cloud distribution, the degree of anisotropy of the AGN radiation field, and the volume filling factor. Nevertheless, we find that the RWD provides a reasonably robust estimate, to within a factor of ∼3, of the luminosity-weighted torus radius, confirming the basic assumption underlying reverberation mapping. However, overall, the models predict radii at 2.2 μm that are typically a factor of ∼2 larger than those derived from K-band reverberation mapping. This is likely an indication that the innermost region of the torus is populated by clouds dominated by large graphite grains.
Effect of Vegetation on the Temperatures of TRAPPIST-1 Planets
Authors: Vecchio Antonio , Primavera Leonardo , Lepreti Fabio , Alberti Tommaso , Carbone Vincenzo
Published: February 2020

TRAPPIST-1 is an ultracool dwarf hosting a system consisting of seven planets. While orbital properties, radii, and masses of the planets are nowadays well constrained, one of the fascinating open issues is the possibility that an environment hospitable to life could develop on some of these planets. Here, we use a simple formulation of an energy balance model that includes vegetation coverage to investigate the possibility of life affecting the climate of the planets in the TRAPPIST-1 system. Results confirm that planet TRAPPIST-1e has the best chance to be a habitable world and indicate that vegetation coverage significantly affects the resulting temperatures and habitability properties. The influence of vegetation has been evaluated in different scenarios characterized by different vegetation types, land–sea distributions and levels of greenhouse effect. While changes in vegetation type produce small changes, about 0.1%, in the habitable surface fraction, different land–sea distributions, by also affecting the vegetation growth, produce different temperature distributions. Finally, at latitudes where vegetation grows, the lowering of local albedo still represents a relevant contribution in settling the planetary temperature profiles even when levels of greenhouse effect higher than the Earth-like case are considered.
Photodissociation Branching Ratios of 13C16O in the Vacuum Ultraviolet Region from 102,745 to 106,360 cm−1
Authors: Chi Xiaoping , Jiang Pan , Zhu Qihe , Jackson William M. , Cheng Min , Gao Hong
Published: February 2020

Direct branching ratio measurements for 13C16O are reported for the three lowest dissociation channels that produce C(3P)+O(3P), C(1D)+O(3P), and C(3P)+O(1D) in the vacuum ultraviolet (VUV) region from 102,745 cm−1 (97.33 nm) to 106,360 cm−1 (94.02 nm) and covering six 1Σ+ and six 1Π states. A time-slice velocity-map ion imaging apparatus with a tunable VUV laser source that is generated by the two-photon resonance-enhanced four-wave mixing technique is used to make these measurements. The results show that the substitution of 12C by 13C dramatically changes the photodissociation branching ratios into channels that produce C and O atoms in the excited 1D state for most of the absorption bands in the titled energy range. This isotope effect strongly depends on the specific rovibronic quantum states of CO that are being excited. The branching ratio data from the present study for 13C16O may significantly impact existing photochemical models because of the higher reactivity of the 1D states of the C and O atoms. In addition to this isotope effect, the rotational dependence of the branching ratios to high J′ levels for several vibronic states has been determined. This provides useful information for unraveling the complicated predissociation dynamics of 13C16O.
Use of a Mobile Anonymous Question-Raising System to Assist Flipped-Classroom Learning
Authors: Lai Chien-Hung , Jong Bin-Shyan , Hsia Yen-Teh , Lin Tsong-Wuu
Published: February 2020

Flipped classroom emphasizes the following. First, the instructor uses a digital platform to store course contents, including video lectures. Then, students retrieve these contents from the platform and learn by themselves before class. Finally, the instructor helps the students acquire their knowledge by asking questions in class, thereby helping the students to attain their learning goals. In previous studies, it was found that students might be affected by their peers and their own personalities, causing them not to express their opinions and views; this in turn might cause the students not to learn well; in some extreme cases, some students might even give up entirely. To solve the problem that students may hesitate to ask questions in class, this research developed a mobile anonymous question-raising system (MAQ) and used it to help students raise questions. By conducting an educational experiment, it was found that the use of MAQ in class could indeed help students to learn better in a flipped classroom setting.
Orner la maison de Dieu. Les décors de quelques églises templières et hospitalières de Saint-Jean de Jérusalem au xiiie siècle
Authors: Voyer Cécile
Published: February 2020

Cet article propose d’observer la spiritualité et l’exégèse visuelle qui, au xiiie siècle, ont présidé à l’élaboration du décor peint ou sculpté de quelques églises paroissiales templières et hospitalières de Saint-Jean de Jérusalem (l’église templière de Montsaunès, l’église des Templiers de Paulhac et les chapelles hospitalières de La Croix-au-Bost et de Lavaufranche). Outre la pensée singulière qui s’exprime dans chacun des décors, se dessinent en creux la mission dont ces deux ordres militaires se sentent investis, leurs ambitions et la manière dont ils se pensent et se positionnent au sein de l’Église et de la société.
Crociate, ordini militari e santi guerrieri: culto e iconografia in Italia centromeridionale
Authors: Curzi Gaetano
Published: February 2020

L’itinérance et la guerre ont constitué deux thèmes fédérateurs au sein de la propagande de croisade. Dans ce contexte, les saints qui avaient combattu physiquement contre le Mal connurent un grand succès, par l’exemple offert aux moines guerriers et aux chevaliers chrétiens en général. Un rôle de premier plan fut notamment réservé à saint Georges qui, loin de se limiter au rôle de protecteur des croisés, devint lui-même un combattant de la croisade et fut même l’artisan de la prise d’Antioche en 1098.Au sein d’un phénomène qui a concerné l’ensemble de l’Occident chrétien, cet article se concentre sur l’Italie centro-méridionale qui, à partir du xie siècle, connut une diffusion du culte et de l’iconographie des saints guerriers, en partie sous l’influence des ordres militaires. En conclusion est abordé un cas un peu particulier : la tentative de canonisation de Bevignate, orchestrée à Pérouse dans la seconde moitié du xiiie siècle, par les Templiers qui assurèrent la diffusion de ses reliques en Italie et en Espagne.
Experimenting Language Identification for Sentiment Analysis of English Punjabi Code Mixed Social Media Text
Authors: Bansal Neetika , Goyal Vishal , Rani Simpel
Published: February 2020

People do not always use Unicode, rather, they mix multiple languages. The processing of codemixed data becomes challenging due to the linguistic complexities. The noisy text increases the complexities of language identification. The dataset used in this article contains Facebook and Twitter messages collected through Facebook graph API and twitter API. The annotated English Punjabi code mixed dataset has been trained using a pipeline Dictionary Vectorizer, N-gram approach with some features. Furthermore, classifiers used are Logistic Regression, Decision Tree Classifier and Gaussian Naïve Bayes are used to perform language identification at word level. The results show that Logistic Regression performs best with an accuracy of 86.63 with an F-1 measure of 0.88. The success of machine learning approaches depends on the quality of labeled corpora.
Communication-Oriented and Process-Sensitive Planning Support
Authors: Staffans Aija , Kahila-Tani Maarit , Geertman Stan , Sillanpää Pihla , Horelli Liisa
Published: February 2020

The complexity of the planning context has raised criticism against public participation for being a rigid top-down endeavour which does not recognize the different communicative needs and necessary working modes in the engagement of broad publics and collaborative small groups. Consequently, the problem is how to improve public participation so that it becomes more sensitive to the variety of communicative activities and knowledge needs involved in the design of urban planning processes. The aim of the article is to present and discuss, on the basis of two small case studies in the Finnish context, a revised model for a process-sensitive planning support system (PSS), with examples of several digital tools. The authors argue that besides broad public participation, more collaboration is needed to converge the diverse knowledge of planning in two-way communication and co-working settings which enable the analysis and design of living environments.
Cold Start Problem Alleviation in a Research Paper Recommendation System Using the Random Walk Approach on a Heterogeneous User-Paper Graph
Authors: Manju G.  , Abhinaya P.  , Hemalatha M.R.  , Manju Ganesh G.  , Manju G.G.
Published: February 2020

Recommendation approaches generally fail to recommend newly-published papers as relevant, owing to the lack of prior information about the said papers and, more particularly, problems associated with cold starts. It would appear, to all intents and purposes, that researchers currently interact more on social networks than they normally would in academic circles, and relationships of a purely academic nature have witnessed a paradigm shift, in keeping with this new trend. In existing paper recommendation methods, the social interaction factor has yet to play a pivotal role. The authors propose a social network-based research paper recommendation method, that alleviates cold start problems by incorporating users' social interaction, as well as topical relevancy, among assorted papers in the Mendeley academic social network using a novel approach, random walk Ergodic Markov Chain. The system yields improved results after cold start alleviation, compared with the existing system.
The Design of Power Security Defense System Based on Resource Pool Cloud Computing Technology
Authors: Nan Dang
Published: February 2020

In order to realize the power system defense security, this article puts forward the idea and method of constructing power dispatching automation systems with a cloud computing architecture and realizes the unified management of distributed resources with server virtualization technology. Real-time online migration of each module of the scheduling system is realized by using the in-memory data transfer technology. The multi-node network heartbeat detection technology is used to realize the complete monitoring of the server cluster. In the form of an independent disk array, the fault node is removed, and the service is restored automatically. The whole disaster reserve of the system is realized by means of remote resource mapping. System analysis results show that compared with traditional architecture, the service interruption probability of the new scheduling automation system is effectively reduced. Fault redundancy capacity in the station is increased from a key module 2 node to multi-node protection of all modules.
Volumetric Estimation of the Damaged Area in the Human Brain from 2D MR Image
Authors: Srinivasu P Naga , Rao T Srinivasa , Balas Valentina Emilia
Published: February 2020

In this article, we present a volumetric estimate of the mutilated part in the human brain from a typical 2D MR image that is directly rendered from the scanner, which is first of its kind in the field of medical imaging. The proposed concept necessitates segmentation of the MR image for the identification of dimensions in the damaged region. Once the dimensions are identified from the resultant segmented image, the volume of the damaged region is evaluated through the Gauss Derivation theorem. The pixel to the distance scaling, which is fed as an input for the Gauss Derivation is from an earlier medical diagnosis from another researcher. The proposed algorithm was experimented with real-time images and the obtained results were examined against the real-time scenarios and were observed to exhibit better accuracy.
Developing a Taxonomy for Identifying Stakeholders in National ICT Policy Implementation
Authors: Makoza Frank
Published: February 2020

Information and communication technology (ICT) policies attract different stakeholders in the policy cycle phases. Whilst most studies on stakeholder analysis focuses on identifying stakeholders at the beginning of the policy process (ex-ante), we argue that stakeholders may change during the course of the policy process and hence the need to review previous policy stakeholders and identify new stakeholders in the subsequent phases of the policy process. The article proposes a taxonomy of ex-post stakeholder identification for ICT policy implementation phase. The taxonomy comprises the following steps for identifying stakeholders: categorise policy goals, list stakeholders, decide on stakeholders, categorise stakeholders, assign roles to stakeholders, highlight participation of stakeholders, manage stakeholders, and evaluate stakeholders. The taxonomy may be used by those responsible for recruiting stakeholders in the ICT policy implementation.
A Tool to Extract Name Entity Recognition From Big Data in Banking Sectors
Authors: Janarish Saju C. , Ravimaran S.
Published: February 2020

Generally, the Internet is the global system of interconnected computer networks, connecting millions of computers as well as people, and thus generates a massive quantity of information on a daily basis. This leads to extracting the necessary information using information filtering (IF) in several domains. In our implementation, the named entity recognition (NER) technique is employed to automatically extract valuable data from the unstructured natural language texts. As several works has been outlined in detecting named entities, plenty of very different NER tools exist for several domains. However, NER remains a giant challenge so to solve this problem we proposed a novel framework by combining three efficient classifiers. This article proposes a three-layered neural network approach with conditional random field (CRF), the Pachinko allocation model (PAM), and the Adaptive Neuro-Fuzzy Inference System (ANFIS) for detecting named entities in three steps. First, a classifier based on CRF is employed to train the input file. Second, PAM is employed to boost the previous output created by CRF to enhance the label annotation. Third, the ANFIS captures the deep features of the information by itself from the pre-trained information to attain accurate predictions. Experimental results show that the learned model yields a banking domain with a recall rate of 92%, a precision rate of 95% and F-measure of 92% by implementing it in the R Platform.
Table of Contents Vol 11, No 1 (2019)
Authors: Office Editorial
Published: February 2020

No abstract available.
Total knee replacement
Authors: Van Vuren J. P.
Published: February 2020

No abstract available.
The "vibrator”: Therapeutic tool or academic toy?
Authors: Brinkworth K. E.
Published: February 2020

No abstract available.
Hospital Advisory Service
Authors: Dyer Lois
Published: February 2020

No abstract available.
Spinal injuries: The challenge of current rehabilitation
Authors: Bromley Ida
Published: February 2020

No abstract available.
Play for work: In three acts
Authors: McLaren S. H.
Published: February 2020

No abstract available.
Aerosol concentrations variability over China: two distinct leading modes
Authors: Feng Juan , Zhu Jianlei , Li Jianping , Liao Hong
Published: February 2020

Abstract. Understanding the variability in aerosol concentrations (AC) over China is a scientific challenge and is of practical importance. The present study explored the month-to-month variability in AC over China based on simulations of an atmospheric chemical transport model with a fixed emissions level. The month-to-month variability in AC over China is dominated by two principal modes: the first leading mono-pole mode and the second meridional dipole mode. The mono-pole mode mainly indicates enhanced AC over eastern China, and the dipole mode displays a south–north out-of-phase pattern. The two leading modes are associated with different climatic systems. The mono-pole mode relates to the 3-month leading El Niño–South Oscillation (ENSO), while the dipole mode connects with the simultaneous variation in the North Atlantic Oscillation (NAO) or the Northern Hemisphere Annular Mode (NAM). The associated anomalous dynamic and thermal impacts of the two climatic variabilities are examined to explain their contributions to the formation of the two modes. For the mono-pole mode, the preceding ENSO is associated with anomalous convergence, decreased planetary boundary layer height (PBLH), and negative temperature anomalies, which are unfavorable for emissions. For the dipole mode, the positive NAO is accompanied by opposite anomalies in the convergence, PBLH, and temperature over southern and northern China, paralleling the spatial formation of the mode. This result suggests that the variations originating from the tropical Pacific and extratropical atmospheric systems contribute to the dominant variabilities of AC over China.
Acetate turnover and methanogenic pathways in Amazonian lake sediments
Authors: Conrad Ralf , Klose Melanie , Enrich-Prast Alex
Published: February 2020

Abstract. Lake sediments in Amazonia are a significant source of CH4, a potential
greenhouse gas. Previous studies of sediments using 13C analysis found
that the contribution of hydrogenotrophic versus acetoclastic methanogenesis
to CH4 production was relatively high. Here, we determined the
methanogenic pathway in the same sediments (n=6) by applying
14Cbicarbonate or 2-14Cacetate and confirmed the high
relative contribution (50 %–80 %) of hydrogenotrophic methanogenesis. The
respiratory index (RI) of 2-14Cacetate, which is 14CO2
relative to 14CH4+14CO2, divided the sediments into
two categories, i.e., those with an RI < 0.2 consistent with
the operation of acetoclastic methanogenesis and those with an RI > 0.4 showing that a large percentage of the acetate-methyl was
oxidized to CO2 rather than reduced to CH4. Hence, part of the
acetate was probably converted to CO2 plus H2 via syntrophic
oxidation, thus enhancing hydrogenotrophic methanogenesis. This happened
despite the presence of potentially acetoclastic Methanosaetaceae in all the sediments.
Alternatively, acetate may have been oxidized with a constituent of the
sediment organic matter (humic acid) serving as oxidant. Indeed, apparent
acetate turnover rates were larger than CH4 production rates except in
those sediments with a R<0.2. Our study demonstrates that CH4
production in Amazonian lake sediments was not simply caused by a
combination of hydrogenotrophic and acetoclastic methanogenesis but
probably involved additional acetate turnover.
On evapotranspiration and eddy covariance measurements corrections
Authors: Zawilski Bartosz M.
Published: February 2020

Abstract. Eddy Covariance (EC) technique is one of the most used technique monitoring Green House Gases (GHG) fluxes such as H2O, CO2, CH4. Water vapor movement and corresponding air density fluctuations were corrected by Webb et al. (1980) but not water vapor formation. Classic EC technique supposes mean air vertical speed nullity when it cannot be the case because of water evaporation. Water is falling as a liquid, evaporating directly from soil surface, from shallow soil subsurface or either through vegetation transpiration and becomes a gas which corresponds to a notable volume expansion. Water vapor is mounting through atmosphere, compensating in a cloud and falling as a rain (liquid) again. Evaporation and corresponding volume expansion make mean vertical air speed positive (upgoing) and influence more or less a flux balance following concerned gas or energy. A simple accessing and corresponding correction for the half hourly summation is given and applied to a 11-month real set of data. These corrections allow to explain, in part, most observed eddy covariance discrepancies.
Climate-induced speleothem radiocarbon variability on Socotra Island from the Last Glacial Maximum to the Younger Dryas
Authors: Therre Steffen , Fohlmeister Jens , Fleitmann Dominik , Matter Albert , Burns Stephen J. , Arps Jennifer , Schröder-Ritzrau Andrea , Friedrich Ronny , Frank Norbert
Published: February 2020

Abstract. In this study, the dead carbon fraction (DCF) variations
in stalagmite M1-5 from Socotra Island in the western Arabian Sea were
investigated through a new set of high-precision U-series and radiocarbon
(14C) dates. The data reveal an extreme case of very high and also
climate-dependent DCF. For M1-5, an average DCF of 56.2±3.4 % is
observed between 27 and 18 kyr BP. Such high DCF values indicate a high
influence of aged soil organic matter (SOM) and nearly completely closed-system carbonate dissolution conditions. Towards the end of the last glacial
period, decreasing Mg∕Ca ratios suggest an increase in precipitation which
caused a marked change in the soil carbon cycling as indicated by sharply
decreasing DCF. This is in contrast to the relation of soil infiltration and
DCF as seen in stalagmites from temperate zones. For Socotra Island, which
is influenced by the East African–Indian monsoon, we propose that more
humid conditions and enhanced net infiltration after the Last Glacial
Maximum (LGM) led to dense vegetation and thus lowered the DCF by increasing
14CO2 input into the soil zone. At the onset of the Younger Dryas
(YD) a sudden change in DCF towards much higher, and extremely variable,
values is observed. Our study highlights the dramatic variability of soil
carbon cycling processes and vegetation feedback on Socotra Island
manifested in stalagmite DCF on both long-term trends and sub-centennial
timescales, thus providing evidence for climate influence on stalagmite
radiocarbon. This is of particular relevance for speleothem studies that aim
to reconstruct past atmospheric 14C (e.g., for the purposes of 14C
calibration), as these would rely on largely climate-independent soil carbon
cycling above the cave.
River patterns reveal two stages of landscape evolution at an oblique convergent margin, Marlborough Fault System, New Zealand
Authors: Duvall Alison R. , Harbert Sarah A. , Upton Phaedra , Tucker Gregory E. , Flowers Rebecca M. , Collett Camille
Published: February 2020

Abstract. Here we examine the landscape of New Zealand's
Marlborough Fault System (MFS), where the Australian and Pacific plates obliquely
collide, in order to study landscape evolution and the controls on fluvial
patterns at a long-lived plate boundary. We present maps of drainage
anomalies and channel steepness, as well as an analysis of the plan-view
orientations of rivers and faults, and we find abundant evidence of
structurally controlled drainage that we relate to a history of drainage
capture and rearrangement in response to mountain-building and strike-slip
faulting. Despite clear evidence of recent rearrangement of the western MFS
drainage network, rivers in this region still flow parallel to older faults,
rather than along orthogonal traces of younger, active strike-slip faults.
Such drainage patterns emphasize the importance of river entrenchment,
showing that once rivers establish themselves along a structural grain,
their capture or avulsion becomes difficult, even when exposed to new
weakening and tectonic strain. Continued flow along older faults may also
indicate that the younger faults have not yet generated a fault damage zone
with the material weakening needed to focus erosion and reorient rivers.
Channel steepness is highest in the eastern MFS, in a zone centered on the
Kaikōura ranges, including within the low-elevation valleys of main stem
rivers and at tributaries near the coast. This pattern is consistent with an
increase in rock uplift rate toward a subduction front that is locked on its
southern end. Based on these results and a wealth of previous geologic
studies, we propose two broad stages of landscape evolution over the last 25 million years of orogenesis. In the eastern MFS, Miocene folding above blind
thrust faults generated prominent mountain peaks and formed major transverse
rivers early in the plate collision history. A transition to Pliocene
dextral strike-slip faulting and widespread uplift led to cycles of river
channel offset, deflection and capture of tributaries draining across active
faults, and headward erosion and captures by major transverse rivers within
the western MFS. We predict a similar landscape will evolve south of the
Hope Fault, as the locus of plate boundary deformation migrates southward
into this region with time.
Ser madre en la ficción televisiva: una comparativa entre series españolas y estadounidenses
Authors: Hidalgo-Marí Tatiana , Palomares Sánchez Patricia
Published: February 2020

Resumen. El presente trabajo analiza la representación de la maternidad en las series de ficción televisiva, con el fin de aportar una reflexión acerca de cómo se configuran las narrativas que dan significado a la mujer y sus roles dentro de las series. Para ello, se ha trabajado sobre una metodología mixta, que conjuga datos cuantitativos con cualitativos, analizando un total de seis series de ficción­ —tres españolas y tres estadounidenses— que se integran en dos géneros fronterizos: el drama y el dramedy. Los resultados apuntan que, a pesar de que la ficción televisiva incorpora nuevas narrativas que introducen temas relevantes para las mujeres en la actualidad, la representación de la maternidad continúa reflejándose desde una perspectiva tradicional y patriarcal, aunque se observa cierta innovación, alejada de los roles tradicionales, a la hora de representar la maternidad en las series estadounidenses.
Nutritional and biological value of pork obtained from animals fed with lysine and methionine
Authors: Gorlov Ivan , Slozhenkina Marina , Mosolov Alexander , Baranikov Vladimir , Nikolaev Dmitry , Chernyak Alexander , Sherstyuk Bogdan , Krotova Olga
Published: February 2020

The article presents material on the effect of the amino acids lysine and methionine in pig diets. Studies have been carried out to increase the live weight of animals, depending on the content of these amino acids in the diet when fattening up to 100 and 120 kg. Presented research results obtained during testing in certified and accredited laboratories. When growing gilts to live weight from 30 to 50 kg, a deficiency in the level of lysine was found, which reaches up to 29.6%, and methionine with cystine up to 23.1%. When growing animals from 81 to 120 kg of live weight, the lysine deficiency is 14.9%, and methionine with cystine is 8,8%. This necessitated balancing the diet of animals to the required level of amino acid content. The most effective on the growth and development of animals, as well as on indicators of pork quality, was the introduction of feed lysine in combination with methionine in pig diets.
The Polish-Lithuanian Commonwealth and Polish Nation as a Contradictory Subject in Lithuanian History Textbooks After Regaining Independence in 1990
Authors: Naudžiūnienė Akvilė
Published: February 2020

After Lithuania regained its independence in 1990, its history textbooks have been rewritten several times in order to conform to the new major Lithuanian historical narrative. This article analyses the causes and outcomes of common Polish-Lithuanian Commonwealth history and the Polish nation as an ethnic minority in independent Lithuania as presented in Lithuanian educational system during the end of twentieth century—beginning of the twenty-first century. It is based on the research of curricula for Lithuanian history education and Lithuanian history textbooks.
The “First Poland” (Tenth–Eighteenth Century) in Current Flemish History Textbooks for Secondary Education: Inclusion or Exclusion in a Eurocentric Curriculum?
Authors: Van Nieuwenhuyse Karel
Published: February 2020

Flemish history education is very Western-oriented and takes a Eurocentric view on the past. The question then raises how “Europe” is defined. Polish history (from the tenth century to 1795) is used as a case study to examine whether “Europe” is meant as the whole continent, or especially Western Europe. Four currently used textbook series for general secondary school history education in Flanders have been studied, via a narrative content analysis and a discourse analysis. Results clearly show that Eurocentrism in Flemish history textbooks can be understood as a quasi-sole Western European orientation, and as Western Europe serving as the standard to judge other societies upon. Furthermore, it is argued that the case of Polish history can serve as a pars pro toto for almost all non-Western European regions. The implications of this representation are far-reaching, as it affects students’ understanding of the past, their historical thinking skills, and their identity-building. The inclusion of multi-perspectivity in history education to go beyond Eurocentrism is substantiated, and discussed afterwards, both in general and via specific strategies.
Health Communication in Local Perspective (Critical Study of the Cultural Effects on the Healthy Lifestyle of Communities on the Flores Island)
Authors: Dori Gobang Yonas Klemens Gregorius , Salesman Frans
Published: February 2020

Traditional societies have cultural wisdom to maintain their health, and care for themselves when sick. Purpose.reveal the facts, circumstances, phenomena of Cultural Influence on the Healthy Lifestyle of Communities on the Island of Flores, East Nusa Tenggara. Method.Qualitative descriptive, by uncovering the facts as they are, interpreted and concluded.Results. The traditional community's belief in Flores that health and sickness is determined by an invisible supernatural power. Worship is done through traditional rites to keep the community healthy, or to do spell prayers by the traditional healer in the process of healing the patient. Communication during health care uses traditional methods based on local culture. Their hope is that medical staff will also use local wisdom-based health communication patterns in modern medical care. Conclusion. Medical staff need to study local culture-based health communication in the modern health service process. In the future, it is necessary to include strategies and development of local culture-based health communication in medical care for patients in Indonesia.
Critical Review: Current Research Issues on Crypto-currency and its Application in Financial Sectors
Authors: Hong Hin Lim
Published: February 2020

This research article is based on the current research issues on crypto-currency and its application in financial sectors. The researcher stated that crypto- currency attracted a significant attention and has been adopted in numerous applications, such as smart grid and Internet of Things (IoT) have a high scalability barrier for block-chain which limits its ability to support services with frequent transactions. In this research paper the researcher emphasized that some of the significant research issues on decentralized, peer to peer financial networks face risks such as fraud and suspicious trading, volatile price fluctuations, regularity uncertainty, and instability in financial sectors. This research study shows the huge growth of online users, virtual word concept which are created a new business phenomenon to facilitate financial activities such as buying, selling and trading. This research article analyzed the user’s expectation of future of crypto-currency in financial sectors at different significant level. In addition to this the researcher also discussed a statistical report which is adopted from the Statistic to provide a future direction of money regulatory in financial sector.
Research on the Issuance Mechanism and Implementation Path of Multi-Body Asset Securitization Products of China Rural Banks
Authors: Xu Lingjuan , Liu Xinyue , Huailei Zhu , Jing Sun
Published: February 2020

Asset securitization can well solve the bottleneck problem of China rural banks in supporting the development of agriculture, rural areas and farmers. However, a single entity will face many constraints on issuing credit asset-backed securitization products due to the small scale, short term and high credit risk of loans of rural banks. Therefore, this paper innovatively designs a credit asset-backed securitization product program jointly issued by a number of rural banks from the three aspects of asset pool construction, transaction structure design and credit enhancement, and demonstrates the feasibility of the program with an example, and the results show that the design scheme of asset securitization products is feasible and effective.