bluuebunny/crossref_metadata_2025_split huggingface dataset:
Thermal Performance of Electrochromic Smart Window with Nanocomposite Structure under Different Climates in Iran
Authors: Hoseinzadeh Siamak 
Published: February 2019

Objective:
This study investigated the optimization of thermal energy consumption using
electrochromic components with a new nanocomposite layer (WO3+Ag) in a larger size (window) for
a room with an educational application for five cities with different climatic conditions in Iran (Yazd,
Tehran, Bandar Abbas, Tabriz, and Sari).

Materials & Methods:
For this simulation platform, the software was implemented in Energy Plus.
This feasibility study was modeled by DesignBuilder software which reported reduced thermal energy
consumption across all climates in Iran (hot and dry, warm and semi-humid, warm and wet, moderate
and dry, and mild and humid.). Four strategies were considered for better comparison. The first strategy
used for common double-glazed windows, while the second to fourth strategies involved the use of
the electrochromic window in three different modes; bleached mode (Off), colored mode (On), and
switchable mode (controlled below comfort conditions).

Results:
The third and fourth strategies indicated a reduction in thermal energy consumption in different
climates from 25 to 45% relative to typical windows. The best result of cooling energy consumption
was observed in Tehran.

Conclusion:
For this climate, the average energy consumption dropped to 34% for the warm months
of the year and even 42% for the warmest month of the year (August).
Quantum Chemical Studies on the Spectroscopic, Electronic Structural and Nonlinear Properties of an Organic N-Methyl-N- (2,4,6-Trinitrophenyl) Nitramide Energetic Molecule
Authors: Veerappan Anbu , Arumugam Vijayalakshmi Karattadipalayam 
Published: February 2019

Background:Earlier studies on the energetic molecule MTNPN show a small HOMO-LUMO energy gap. In general, the material which acquires small energy gap exhibits NLO response and identical counterparts in both IR and Raman spectra. Hence, the combined experimental and theoretical studies were performed to explore the fundamental properties of the molecule.Objective:The objective of this study was to explore the fundamental structural properties of an energetic molecule MTNPN in addition to its application as a nonlinear optical material.Methods:FT-IR technique and quantum chemical methods were used to analyze the vibrational normal modes and structural properties of the molecule. Kurtz and Perry technique is used to find second harmonic generation efficiency in comparison to the standard NLO reference material.Results:The potential energy distribution was used to assign the vibrational normal modes of the molecule. The second order perturbation energies between the lone pair and anti-bonding species were predicted to understand the driving forces of molecular stability. The chemical reactivity of the molecule was determined from the molecular electrostatic potential surface and global reactivity descriptor results. The second-order hyperpolarizability of MTNPN and SHG efficiency of MTNPN were studied to find its NLO response and it was found from the results that MTNPN exhibits high NLO response than the standard NLO reference material.Conclusion:The vibrational degrees of freedom of MTNPN molecule were assigned and the experimental FT-IR spectra were compared with the scaled harmonic frequencies. The predicted second-order hyperpolarizability of MTNPN was about 6.46 times greater than the standard NLO reference urea. The interacting species between the lone pair orbitals and antibonding orbitals such as n3O8→ π*(N7-O9), n3O11→ π*(N10-O12) and n3O14→ π*(N13-O15) stabilized the molecule to a greater extent.
Optimization of Solid Lipid Nanoparticles of Ezetimibe in Combination with Simvastatin Using Quality by Design (QbD)
Authors: Borderwala Kruti , Swain Ganesh , Mange Namrata , Gandhi Jaimini , Lalan Manisha , Singhvi Gautam , Shah Pranav 
Published: February 2019

Background:
The objective of this study was to develop solid lipid nanoparticles (SLNs) of
poorly water soluble anti-hyperlipidemic drugs-Ezetimibe in combination with Simvastatin.

Methods:
This study describes a 32 full factorial experimental design to optimize the formulation of drug
loaded lipid nanoparticles (SLN) by the high speed homogenization technique. The independent variables
amount of lipid (GMS) and amount of surfactant (Poloxamer 188) were studied at three levels and arranged
in a 32 factorial design to study the influence on the response variables- particle size, % entrapment
efficiency (%EE) and cumulative drug release (% CDR) at 24 h.

Results:
The particle size, % EE and % CDR at 24 h for the 9 batches (B1 to B9) showed a wide variation
of 104.6-496.6 nm, 47.80-82.05% (Simvastatin); 48.60-84.23% (Ezetimibe) and 54.64-92.27% (Simvastatin);
43.8-97.1% (Ezetimibe), respectively. The responses of the design were analysed using Design Expert
10.0.2. (Stat-Ease, Inc, USA), and the analytical tools of software were used to draw response surface
plots. From the statistical analysis of data, polynomial equations were generated. Optimized formulation
showed particle size of 169.5 nm, % EE of 75.43% (Simvastatin); 79.10% (Ezetimibe) and 74.13%
(Simvastatin); 77.11% (Ezetimibe) %CDR after 24 h. Thermal analysis of prepared solid lipid nanoparticles
gave indication of solubilisation of drugs within lipid matrix.

Conclusion:
Fourier Transformation Infrared Spectroscopy (FTIR) showed the absence of new bands for
loaded solid lipid nanoparticles indicating no interaction between drugs and lipid matrix and being only
dissolved in it. Electron microscope of transmission techniques indicated sphere form of prepared solid
lipid nanoparticles with smooth surface with size approximately around 100 nm.
Fabrication and Characterization of Gelatin Electrospun Fiber Containing Cardamom Essential Oil
Authors: Farahmand Maryam , Alavi Nasireh , Khalesi Mohammadreza 
Published: February 2019

Background:
Gelatin electrospun fibers incorporated with extracted cardamom Essential
Oil (EO) were developed and characterized.

Materials & Methods:
The gelatin solutions were evaluated in terms of conductivity, morphology,
fourier transform infrared spectroscopy, and the effect of cardamom EO on the gelatin fibers. Cardamom
EO showed significant antioxidant activity with IC50 value of 5 μg/mL. The extract contained
several active components including Cyclohexene, 1-methyl-4-(1-methylethylidene) and
Eucalyptol (1.8-cineol) as the most abundant components.

Results:
The images of the scanning electron microscopy revealed formation of nanofibers from
gelatin solution with significant entanglement. Furthermore, discrete beads were appeared by
increasing the concentrations of cardamom EO in the gelatin fibers. Reduction in conductivity
parameter of EO solutions could explain the observed defects. The fourier transform infrared spectra
showed the formation of hydrogen bonds in gelatin fibers. The infrared as well as spectrophotometric
spectra confirmed that EO was effectively involved in electrospun fibers.

Conclusion:
In conclusion, gelatin –a natural biopolymer, incorporated with cardamom EO forms
smooth fabricated electrospun nanofibers.
Intuitionistic Level Set Segmentation for Medical Image Segmentation
Authors: Arora Jyoti , Tushir Meena 
Published: February 2019

Introduction:
Image segmentation is one of the basic practices that involve dividing an
image into mutually exclusive partitions. Learning how to partition an image into different segments
is considered as one of the most critical and crucial step in the area of medical image analysis.

Objective:
The primary objective of the work is to design an integrated approach for automating the
process of level set segmentation for medical image segmentation. This method will help to overcome
the problem of manual initialization of parameters.

Methods:
In the proposed method, input image is simplified by the process of intuitionistic fuzzification
of an image. Further segmentation is done by intuitionistic based clustering technique incorporated
with local spatial information (S-IFCM). The controlling parameters of level set method are
automated by S-IFCM, for defining anatomical boundaries.

Results:
Experimental results were carried out on MRI and CT-scan images of brain and liver. The
results are compared with existing Fuzzy Level set segmentation; Spatial Fuzzy Level set segmentation
using MSE, PSNR and Segmentation Accuracy. Qualitatively results achieved after proposed
segmentation technique shows more clear definition of boundaries. The attain PSNR and MSE value
of propose algorithm proves the robustness of algorithm. Segmentation accuracy is calculated for the
segmentation results of the T-1 weighted axial slice of MRI image with 0.909 value.

Conclusion:
The proposed method shows good accuracy for the segmentation of medical images.
This method is a good substitute for the segmentation of different clinical images with different modalities
and proves to give better result than fuzzy technique.
SDRFHBLoc- A Secure Framework for Localization in Wireless Sensor Networks
Authors: Prashar Deepak , Jyoti Kiran , Kumar Dilip 
Published: February 2019

Background:
Deployment of nodes and their security always remain the main point of
concern in Wireless Sensor Networks (WSNs). Applications that are position-centric, location estimation
is the major requirement and this leads to the emergence of various localization techniques.
There are broadly two types of localization methods: range-based and free- range. Along with the
position estimation, security of the position computation process is the prime concern as the wrong
position estimation through the presence of adversaries in the environment may compromise the
whole process. There are some localization systems that are estimating the position coordinate values
of the nodes, but none of them has addressed the issues to overcome the inclusion of the adversaries
effect on the localization process.

Methods:
Here, we develop and analyze a new framework SDRFHBLoc (Secure Distributed Range
Free Hop Based Localization) that provides the functionality for the deployment of nodes based on
different aspects like the node amount, malicious node amount, range and deployment area. Security
features are also integrated in the system based on authentication of the nodes who are participating
in the localization process using the signature generation and verification.

Results:
The proposed security framework removes the faulty nodes from the network before they
participate in the localization process through the improved DV-Hop approach which is implemented
in the system. Also, the optimization of the entire process provides the best and precise position
estimation using the Particle Swarm Optimization (PSO) module.
Method for experimentally determining N-A-S-(H) solubility
Authors: Williamson Trevor , Han Joonkyoung , Katz Lynn , Sant Gaurav , Juenger Maria 
Published: February 2019

Inorganic polymer binders, also sometimes called geopolymers or alkali-activated cements, can serve as an alternative to ordinary portland cement (OPC) in concrete. The development of thermodynamic models to predict phase development and, ultimately, engineering properties, of inorganic polymer binders is an important step toward enabling their widespread use. However, such models require self-consistent solubility data of the primary phase in inorganic polymer binders, sodium aluminosilicate hydrate(s). To date, there is very little solubility information available for this phase. Here, a rigorous method for synthesizing sodium aluminosilicate hydrate(s) of controlled composition, and for measuring its solubility is presented. This approach allows complete stoichiometric control over the (initial) solution composition to elucidate directly the development of N-A-S-H composition as it relates to a given solution composition. A review of previous literature related to the solubility of other cementitious materials is presented, and the need for thermodynamic data is discussed. Finally, a sample calculation is presented for determining the solubility product (Ksp) of a laboratory synthesized sodium aluminosilicate hydrate.
Cidade educadora: viver a urbe no ensino de geografia
Authors: Nedel Oliveira Victor Hugo 
Published: February 2019

RESUMO Este artigo trabalha a Educação Geográfica a partir das saídas de estudos e suas potencialidades para o ensino de Geografia. A cidade, que surge como cenário para as saídas de campo, não se configura apenas como agente passivo neste contexto, mas como espaço que educa através de seus objetos e ações. Demonstra-se, a partir destes entendimentos, uma proposta de saída de estudos por dois espaços da cidade de Porto Alegre – RS: o Centro Histórico e o Cemitério da Santa Casa de Misericórdia. Os conceitos vivenciados neste trabalho de campo vão além das questões de Geografia urbana, uma vez que existem diversas possibilidades conceituais e analíticas a serem exploradas nos espaços visitados, como é demonstrado no decorrer do texto. Pensar o ensino de Geografia a partir de vivências urbanas coloca o estudante como sujeito social, inserido em um contexto real de uma cidade que pulsa, vibra e se movimenta. Palavras-chave: Geografia. Cidade. Saída de campo. Educação. ABSTRACT This following paper deals with Geographical Education through field trips and their potentialities in teaching Geography. The city, which emerges as a stage for field trips, is not only a passive agent in this context, but a space that educates through its objects and actions. It shows, from such understandings, a proposal of field trips to two places in the city of Porto Alegre - RS: the Historic District and the Cemetery of Santa Casa de Misericordia. The concepts experienced in this field trip go beyond the issues of urban geography, since there are various conceptual and analytical possibilities to be explored in the places visited, as demonstrated throughout the text. Considering teaching Geography from urban experiences place the student as a social subject, inserted in a real context of a city that pulsates, vibrates and moves. Keywords: Geography. City. Field Trip. Education. RESUMEN Este artículo trabaja la Educación Geográfica a partir de las salidas de estudios y sus potencialidades para la enseñanza de Geografía. La ciudad, que surge como escenario para las salidas de campo, no se configura sólo como agente pasivo en este contexto, sino como espacio que educa a través de sus objetos y acciones. Se demuestra, a partir de estos entendimientos, una propuesta de salida de estudios por dos espacios de la ciudad de Porto Alegre - RS: el Centro Histórico y el Cementerio de la Santa Casa de Misericordia. Los conceptos vivenciados en este trabajo de campo van más allá de las cuestiones de Geografía urbana, ya que existen diversas posibilidades conceptuales y analíticas a ser exploradas en los espacios visitados, como se demuestra en el transcurso del texto. Pensar la enseñanza de Geografía a partir de vivencias urbanas coloca al estudiante como sujeto social, inserto en un contexto real de una ciudad que pulsa, vibra y se mueve. Palabras-clave: Geografía. Ciudad. Salida De Campo. Educación. DOI: http://dx.doi.org/10.22169/revint.v13i29.1407
Arquiteturas Pedagógicas na formação de professores a distância
Authors: Aragón Rosane , Michels Ana Beatriz , Araújo Alexandre 
Published: February 2019

Resumo Este artigo tem como finalidade analisar o processo de apropriação e utilização de arquiteturas pedagógicas num curso de Pedagogia, na modalidade a distância. Os dados empíricos desse estudo, composto por vinte e quatro artigos publicados em periódicos, eventos e capítulos de livros, foram analisados na perspectiva da análise de conteúdo. Os resultados mostram que os objetivos propostos no projeto pedagógico do curso foram colocados em prática na formação, bem como sugerem que as arquiteturas pedagógicas tiveram um papel importante no crescimento gradual do engajamento, da autonomia e da cooperação, sinalizando o alcance do objetivo de construção de redes de aprendizagem e de suporte a reconstrução de arquiteturas pedagógicas para utilização em suas salas de aula. Palavras-chave: Formação de Professores. Inovação Pedagógica. Tecnologias Digitais. ABSTRACT The following paper analyzes the process of appropriation and usage of Pedagogical Architectures in a Pedagogy distance education program. The empirical data, consisting of twenty-four articles, published in periodicals, symposia and book chapters, were analyzed regarding their content. The results show that the objectives proposed in the program pedagogical project were put into practice in the training. In addition, they suggest that pedagogical architectures played an important role in the gradual growth of engagement, autonomy and cooperation, substantiating the achievement of the goal of building learning networks and supporting the reconstruction of pedagogical architectures to be used in their classrooms. Keywords: Teacher Training. Pedagogical Innovation. Digital Technologies. RESUMEN Este artículo tiene como finalidad analizar el proceso de apropiación y utilización de arquitecturas pedagógicas en un curso de Pedagogía, en la modalidad a distancia. Los datos empíricos de este estudio, compuesto por veinticuatro artículos publicados en periódicos, eventos y capítulos de libros, fueron analizados en la perspectiva del análisis de contenido. Los resultados muestran que los objetivos propuestos en el proyecto pedagógico del curso se pusieron en práctica en la formación, así como sugieren que las arquitecturas pedagógicas desempeñaron un papel importante en el crecimiento gradual del compromiso, de la autonomía y de la cooperación, señalando el alcance del objetivo de construcción de redes de aprendizaje y de soporte a la reconstrucción de arquitecturas pedagógicas para su uso en sus aulas. Palabras clave: Formación de Profesores. Innovación Pedagógica. Tecnologías Digitales. DOI: http://dx.doi.org/10.22169/revint.v13i29.1435
REPRESENTAÇÕES SOCIAIS DE PROFESSORES RECÉM-LICENCIADOS EM LETRAS E(M) MOSTRAS DE (RE)CONSTRUÇÃO IDENTITÁRIA DOCENTE
Authors: Santos Patricia Silva , Modl Fernanda De Castro 
Published: February 2019

RESUMO: Neste trabalho, apresentamos posições de professores de línguas recém-formados por uma mesma instituição de ensino, a Universidade Estadual do Sudoeste da Bahia, campus Vitória da Conquista. O que fazemos para refletir sobre movimentos enunciativos que informam sobre (re)construção identitária do profissional professor, bem como para delimitar representações sociais desse grupo. Para tanto, analisamos discursivamente, em posições de 3 (três) sujeitos, o que eles dizem a respeito do seu trabalho, desde o ingresso na graduação até o exercício da profissão. No trabalho com esses dizeres: i) acessamos representações sociais sobre a profissão; ii) demonstramos a validade do instrumento de pesquisa questionário discursivo para gerar e lidar com dizeres que indiciem movimentos de (re)construção identitária relativos à figura professor (Modl; Ribeiro, 2015) e iii) apostamos na importância de pesquisas que versem sobre identidades profissionais docentes em consonância com o estudo das representações sociais para as agendas de pesquisa no campo da Linguística Aplicada.
PALAVRAS-CHAVE: Identidades profissionais; Profissão professor de línguas; Representações sociais.
Ekonomiczna efektywność gospodarowania w zależności od formy własności użytkowanej ziemi
Authors: Kagan Adam , Ziętara Wojciech 
Published: February 2019

W artykule przedstawiono ekonomiczną efektywność gospodarowania dzierżawców w porównaniu do gospodarstw użytkujących własną ziemię. Badania przeprowadzono na wybranych grupach spółek z o.o. użytkujących grunty dzierżawione (grupa 1.), własne, ale ze znaczącym udziałem kapitału obcego (grupa 2.) i własne z przewagą kapitału własnego (grupa 3.), biorących udział w „Rankingu 300” prowadzonym przez IERiGŻ-PIB w latach 2009-2014. W badaniu przyjęto, że dzierżawa ziemi umożliwia prowadzenie działalności gospodarczej przynoszącej wyższe bieżące efekty ekonomiczne z użytkowanych gruntów niż w sytuacji posiadania ich na własność. Przeprowadzone badania potwierdziły przyjętą hipotezę. Gospodarstwa prowadzone przez dzierżawców uzyskały wyższe wartości wskaźników zyskowności ziemi, pracy, aktywów i kapitału własnego niż gospodarstwa użytkujące własną ziemię. W odniesieniu do produktywności ziemi, pracy i kapitału lepsze efekty uzyskały gospodarstwa grupy 3.
Estresores Emocionales de Estudiantes de Enfermería en Prácticas Clínicas Intrahospitalarias
Authors: Morales Herrera Edith , Amigo Rojas Claudia , Álvarez Hormázabal Alejandra , Bustamante Ubilla Miguel 
Published: February 2019

Este trabajo estudia la presencia de estresores en estudiantes de enfermería de tercer año durante la realización de sus prácticas clínicas intrahospitalarias. Se aplicó una metodología cuantitativa por medio del cuestionario bilingüe Kezkak, del cual se analizaron las dimensiones, falta de competencia, sobrecarga, relación con tutores y compañeros e implicación emocional. Se realizó un piloteo del instrumento con docentes y estudiantes de la escuela de enfermería para verificar entendimiento y comprensión del mismo. Los estudiantes fueron contactados vía on-line lográndose una cobertura de 89,6%. Concluyéndose finalmente que los estudiantes de enfermería presentaron estrés durante las prácticas clínicas intrahospitalarias preferentemente al inicio de estas.
«La práctica de la teoría: elementos para una crítica de la cultura contemporánea», de Alfredo Saldaña
Authors: Alonso Lavandero Miguel 
Published: February 2019

Reseña del libro La práctica de la teoría: elementos para una crítica de la cultura contemporánea (Santiago de Chile, RIL editores, 2018), de Alfredo Saldaña.
El nuevo ensayo de Alfredo Saldaña es, antes que nada, una reivindicación de la utilidad (más aún: la necesidad) de la teoría, que el autor concibe como una herramienta que no solo sirve para interpretar el mundo, sino también (acaso sobre todo) para transformarlo. El autor nos propone un recorrido por la cultura contemporánea a hombros de un nutrido plantel de pensadores (de Adorno a Žižek pasando por Bourdieu, Habermas, Jameson o Said), deteniéndose cada tanto para señalarnos diferentes alternativas al "sistema monológico" mediante el que los poderosos aspiran a someternos. De esta forma, al hilo de un discurso que no avanza en línea recta, sino que abunda en meandros, digresiones, desvíos y retornos, el libro nos invita a reflexionar sobre una notable variedad de asuntos, desde el empobrecimiento de la literatura hasta el nuevo escenario geopolítico.
La Medicina de Familia: mitos y realidad.
Authors: Callejo Giménez Elvira 
Published: February 2019

La Especialidad de Medicina de Familia y Comunitaria, existe como especialidad vía MIR en este país desde 1978. Sin embargo, y a pesar de que van a dedicarse a ella más del 30 % de los graduados (aunque según recomendaciones de organismos internacionales deberían ser el 50 %), sigue siendo una gran desconocida en las Facultades de Medicina. Afortunadamente en la Facultad de Medicina de la UVA, ya es asignatura obligatoria desde 2014. Este artículo ofrece una reflexión personal acerca de la especialidad, desmontando muchos de los mitos que rodean a la MFyC.