bluuebunny/crossref_metadata_2025 huggingface dataset:
Biosynthesis , Characterization and Removal Efficiency for Petroleum Leakage of the Cofe2o4 Nanoparticles
Authors: Muhy Haydar Matz , Duman Fatih
Published: March 2019

Magnetic nanoparticles are widely used in areas such as biosensors, data storage devices, waste water treatment and biomedicine due to their biocompatibility and low toxicity. In this study, biosynthesis of the CoFe2O4 nanoparticle (NP) was carried out using the bark extract of Aesculus hippocastanum plant as a reducing and capping agent. Synthesized NPs were char-acterized by ultraviolet-visible spectrophotometer (Uv-Vis.), Dynamic Light Scattering (DLS), zeta load, X-Ray Dust Diffraction (XRD), Fourier Transformed Infrared Spectroscopy (FT-IR), Scanning Electron Microscopy, Raman, BET, and Thermogravimetric Thermal Analysis (TGA). The Lethal dose value (LD50) and the crude oil removal efficiency were examined. The characteristic light absorption of the CoFe2O4NP has been measured at 330 nm, surface charge of +14.4 mV, mean size of 75 nm and effective diameter of 432 nm. The XRD analy-sis revealed that the particle structure was in the cubic spinel structure with functional groups bound by FT-IR analysis and Raman data. It has been noted that the CoFe2O4NP, which was synthesized by biological method, can remove a 78.5% of the crude oil from the contaminat-ed water. It has been determined that the NP’s have a low toxic effect on D. magna (LD50= 728.267 ppm). In this study, it has been suggested that the CoFe2O4 NP with A. hippocasta-num bark extract could be synthesized by a cheap, relatively easy and environmentally friendly method which used for purification of contaminated water bodies.
Reusing Iraqi Construction and Aggregates Waste to Manu-facturing Eco-Friendly Polymer Concrete
Authors: Hameed Awham M. , Hamza Mohammad T.
Published: March 2019

The recycling and reusing of waste materials to produce suitable materials is very important subjects to scientific research in world now, because the decrease natural resources and create a hole or risk in future of the world. The aim of our research to produce polymer concrete (PC) has high mechanical and physical characteristic. This PC was prepared by using the waste of aggregates and demolitions to make PC have good mechanical and physical characteristic with low cost as compared as cement concrete. In this research different types of construction and demolition waste were used as aggregates replacement (i.e. waste of cement/concrete debris, waste of ceramics and the waste of blocks) while the type of polymer resins (i.e. Epoxy) as cement replacements. The weight percentages of resin were changed within (20, 25 and 30) % to manufacture this polymer concrete. The tests we done like physical such as den-sity and mechanical such as compressive strength, flexural strength. Splitting tensile strength and Schmidt hammer rebound hardness.
Improvement Optical Properties of PVA/ TiO2 and PVA/ ZnO Nanocomposites
Authors: Mohammed Nadheer J. , Rasheed Zahraa S. , Hassan Ashraf S.
Published: March 2019

The optical properties of polyvinyl alcohol (PVA) doped TiO2 and ZnO nanoparticles respectively, were studied. PVA/TiO2 and PVA/ZnO nanoparticles were prepared by the pulsed laser ablation technique (PLA).The optical properties of PVA/ TiO2 and PVA/ ZnO nanocomposite solution have been investigated by transmittance data and absorption spectra. The optical band gap (Eg) was determined and the optical absorption spectra showed that a direct transition. The energy gap of PVA/ ZnO nanoparticles have been observed the decreases its value and increasing in the optical conductivity as compared to PVA/ TiO2.The refractive index (n), extinction coefficient (k) and dielectric constant have been also investigated; it was found that all the above parameters affects by doping.
Seed/Catalyst-Free Growth of 2D And 3D Zno Nanostructures on Glass Substrate by Thermal Evaporation Method: Effects of Carrier Gas Flow Rate
Authors: Alsultany Forat H. , Ghazia Rusul A.
Published: March 2019

Here, we report the seed/catalyst-free growth of 2D and 3D ZnO nanostructures on a glass substrate by thermal evaporation of Zn powder in the presence of O2 gas. These nanostructures were grown on (75 ± 5 nm) ZnO seed layers, which were deposited on glass substrates by radio frequency magnetron sputtering. Prior to synthesized ZnO nanostructures, the sputtered ZnO seeds were annealed using the continuous wave CO2 laser at 450 ℃ in air for 15 min.The effects of carrier gas flow rate on the morphological, structural, and optical properties were systematically studied using field emission scanning electron microscopy, X-ray diffraction and UV-Vis spectroscopy.
Quantum Mechanical Investigations into Thermochemistry Properties and Electronic, Structural of Nanocrystals
Authors: Jawad Huda M.
Published: March 2019

This paper presents quantum mechanical investigations that is into electronic and thermochemistry properties of Gallium phosphide. It also investigates diamondoids and nanocrystals using the density functional theory. This is done at the generalized gradient approximation of Perdew et al basis set. This has been used to create Gaussian 09 program auxiliary by Gaussian view. In order to full investigate the ionization potential, affinity, valance bond, conduction bond, zero point energy and thermochemistry properties. The result GaP diamondoids. Electron affinity and conduction band, decreases as a function of the total number of Ga and P atoms in most of the investigated range. Ionization energies zero point and valance bands increased with the number of Ga and P atoms but there are fluctuations in tetramantane and hexamantane In fact, since the present diamondoids are built from nearly cubic cages. Thermochemistry entails calculation of frequency which also includes thermochemical analysis of actual system comprising of thermal energy correction, heat capacity and entropy.
Image Processing of SEM Image Nano Silver Using K-means MATLAB Technique
Authors: Mohammad Elham Jasim
Published: March 2019

Nanotechnology is one of the non-exhaustive applications in which image processing is used. For optimal nanoparticle visualization and characterization, the high resolution Scanning Electron Microscope (SEM) and the Atomic Force Microscope (AFM) are used. Image segmentation is one of the critical steps in nanoscale processing. There are also different ways to reach retail, including statistical approximations.In this study; we used the K-means method to determine the optimal threshold using statistical approximation. This technique is thoroughly studied for the SEM nanostructure Silver image. Note that, the image obtained by SEM is good enough to analyze more recently images. The analysis is being used in the field of nanotechnology. The K-means algorithm classifies the data set given to k groups based on certain measurements of certain distances. K-means technology is the most widely used among all clustering algorithms. It is one of the common techniques used in statistical data analysis, image analysis, neural networks, classification analysis and biometric information. K-means is one of the fastest collection algorithms and can be easily used in image segmentation.
The results showed that K-means is highly sensitive to small data sets and performance can degrade at any time. When exposed to a huge data set such as 100.000, the performance increases significantly. The algorithm also works well when the number of clusters is small. This technology has helped to provide a good performance algorithm for the state of the image being tested.
Effect of Anodization Duration in the TiO2 Nanotubes Formation on Ti Foil and Photoelectrochemical Properties of TiO2 Nanotubes
Authors: Ayal Asmaa Kadim
Published: March 2019

In this work, the effect of anodizing duration on the morphology and photoelectrochemical properties of TiO2 nanotubes arrays (NTAs) has been investigated The samples were characterized by X-ray diffraction (XRD) and energy dispersive X-ray (EDX) to characterize their crystalline structure and compositional. Surface morphological and their dimensional variation was examined by field emission scanning electron microscopy (FESEM). The anodizing duration played a significant role in the formation of TiO2 nanotubes arrays. Moreover, the photoelectrochemical properties (PEC) were studied through photocurrent measurements. Optimum anodizing duration of 60 min at 40 V exhibited maximum photocurrent of 0.03 mA cm-2 under illumination of halogen light.
Effect of Inclined Magnetic Field on Peristaltic Flow of Carreau Fluid through Porous Medium in an Inclined Tapered Asymmetric Channel
Authors: Ahmed Tamara Sh.
Published: March 2019

During this article, we have a tendency to show the peristaltic activity of magnetohydrodynamics flow of carreau fluid with heat transfer influence in an inclined tapered asymmetric channel through porous medium by exploitation the influence of non-slip boundary conditions. The tapered asymmetric channel is often created because of the intrauterine fluid flow induced by myometrial contraction and it had been simulated by asymmetric peristaltic fluid flow in an exceedingly two dimensional infinite non uniform channel, this fluid is known as hereby carreau fluid, conjointly we are able to say that one amongst carreau's applications is that the blood flow within the body of human. Industrial field, silicon oil is an example of carreau fluid. By exploitation, the perturbation technique for little values of weissenberg number, the nonlinear governing equations in the two-dimensional Cartesian coordinate system is resolved under the assumptions of long wavelength and low Reynolds number. The expressions of stream function, temperature distribution, the coefficient of heat transfer, frictional forces at the walls of the channel, pressure gradient are calculated. The effectiveness of interesting parameters on the inflow has been colluded and studied.
Future Effects and Impacts of Biometrics Integrations on Everyday Living
Authors: Ahmed Amjed A.
Published: March 2019

Identification and access have been a concept that has evolved over time as the need to constantly identify people and grant them access to sensitive and classified data and information became very important. The effect is felt in most organizations, especially multinational companies that deal in highly classified research that has to do with pharmaceuticals, technology, power as well as the human biology coupled with security. The most common form of implementation of biometrics is facial recognition, fingerprints, iris recognition, a retina scanner, and voice recognition into so many applications and scenarios. The integration of this biometrics has had a rising effect and impact of everyday life and has practically changed some daily routines. This paper will examine future integrations of biometrics and it will in time affect everyday life and routine.
Bokrecension: Creative Writing for Critical Thinking. Creating a Discoursal Identity
Authors: Hellspong Lennart
Published: March 2019

Helene Edberg Creative Writing for Critical Thinking. Creating a Discoursal Identity Palgrave, Macmillan 2018 .
Dificuldades no ensino do urbanismo no século XXI
Authors: Medeiros Wesley da Silva
Published: March 2019

Este texto propõe uma reflexão quanto ao ensino da disciplina de urbanismo em cursos de Arquitetura e Urbanismo. Sem ter a pretensão de ser uma abordagem histórica e conceitual, mas de mostrar a perspectiva do autor tal como foi apreendida no cotidiano acadêmico em instituições de Ensino assimiladas, ela abarca ainda resultados do diálogo com colegas professores atuando dentro e fora da disciplina, discentes com e sem formação avançada, tanto em instituições de ensino quanto sob a ótica de funcionários públicos urbanistas. Além foram considerados relatos dos discentes estagiando ao lado de urbanismo em prefeituras, os quais relataram o cenário de habilidades e competência ao exercício da função. O trabalho se constitui, ainda, a partir da proximidade do autor com o poder público em trabalhos de extensão e pesquisa, onde questões abordadas neste texto ficam mais claras.
Literasi Keuangan Dosen-Dosen Perguruan Tinggi di Palembang: Faktor Gender dan Usia
Authors: Soejono Fransiska , Mendari Anastasia Sri
Published: March 2019

This study aims to measure the level of financial literacy of lecturers in Palembang. The method of analysis in this research is descriptive analysis. The number of respondents in this study were 153 respondents. Data collection techniques used survey techniques with questionnaires. Financial literacy index is determined through four stages: (1) Grouping of financial literacy variables in 2 groups, namely basic financial literacy and advanced financial literacy, (2) giving score 1 for correct answer and 0 for other answer that is unknow, wrong answer and refused to answer, (3) Calculate the weight of each variable by using simple weight, (4) Calculate index of financial literacy. The results showed that on average the basic financial literacy of lecturers in Palembang was included in the moderate category, while the average advanced financial literacy was in the low category. The level of financial literacy or Financial Literacy Index as a whole including the low category. Distribution of basic financial literacy based on gender and age average dominant in high category reverse dominant advanced financial literacy distribution in low category.
Analisis Pengaruh Intellectual Capital Terhadap Financial Performance dengan Competitive Advantage Sebagai Variabel Intervening
Authors: Isa Muzakar , Deviana Della Ariska
Published: March 2019

Abstract : The purpose of this research are to analyze: (1) influence of intellectual capital to the competitive advantage; (2) influence of intellectual capital to the financial performance; (3) the mediating effect of competitive advantage in the relationship between intellectual capital and financial performance. The technique of the sample collection was purposive sampling and based on the determined criteria, so 21 companies which have met the criteria have been selected as samples. This research was casual comparative. The analysis used in this study includes classical assumption test, liniar regression analysis and path analysis. The result of this research show that: (1) Intellectual Capital has a significant and positive effect on Competitve Advantage; (2) Intellectual Capital significantly and positively influence on Financial Performance; (3) Competitive Advantage variabel is mediated Intellectual Capital to the Financial Performance. Keyword: Intellectual Capital, Financial Performance, Competitive AdvantageAbstraksi : Penelitian ini bertujuan untuk menganalisis: (1) pengaruh intellectual capital terhadap competitive advantage; (2) pengaruh intellectual capital terhadap financial performance; (3) pengaruh mediasi hubungan antara intellectual capital dan financial performance. Teknik pengambilan sampel adalah purposive sampling dan berdasarkan kriteria yang ditentukan, sehingga diperoleh 21 perusahaan yang memenuhi kriteria. Penelitian ini termasuk kausal komparatif. Analisis yang digunakan dalam penelitian ini meliputi uji asumsi klasik, analisis regresi linier dan analisis jalur. Hasil penelitian ini menunjukkan bahwa: (1) Intellectual Capital mempunyai pengaruh positif dan signifikan terhadap Competitive Advantage; (2) Intellectual Capital mempunyai pengaruh positif dan signifikan terhadap financial performance; (3) Competitive Advantage memediasi Intellectual Capital terhadap Financial Performance. Abstract
PARTISIPASI MASYARAKAT DALAM PEMBERDAYAAN LINGKUNGAN
Authors: Yasril Yazid , Nur Alhidayatillah
Published: March 2019

Partisipasi masyarakat harus ada dalam semua hal, termasuk dalam memelihara kebersihan lingkungan. Lingkungan yang bersih akan mencerminkan kondisi orang-orang yang tinggal di dalamnya. Pemberdayaan lingkungan merupakan cita-cita bersama sehingga juga harus diciptakan secara bersama-sama pula. Berdayanya lingkungan ditandai dengan kondisi lingkungan yang mendukung aktivitas masyarakatnya, artianya aktivitas masyarakat tidak akan terganggu dikarenakan alasan lingkungannya. Misalnya, dikarenakan lingkungan yang kotor menyebabkan gangguan kesehatan sehingga menghalangi aktivitas masyarakat. Pencemaran lingkungan dan segala permasalahannya dapat diatasi jika semua komponen yang ada mau peduli dan bertanggung jawab. Melalui partisipasi aktif, masyarakat diharapkan mau terlibat secara langsung sehingga akan memberikan kontribusi yang nyata sehingga memberikan pengaruh yang besar. Partisipasi masyarakat dalam menciptakan lingkungan yang berdaya tidak akan terjadi jika partisipasi aktif tidak terbentuk. Partisipasi masyarakat bisa dimulai dari kepedulian masyarakat terhadap informasi-informasi lingkungan, baik manfaat maupun dampak. Kemudian informasi yang ada semakin diperkuat sehingga menjadi sebuah pengetahuan tentang lingkungan. Selanjutnya, lingkungan bisa direkayasa sesuai dengan keinginan masyarakat sehingga bisa menjadi pendukung dalam setiap aktivitasnya.
STRATEGI KOMUNIKASI LSM LINGKUNGAN DI INDONESIA DALAM MENDORONG LAHIRNYA UNDANG-UNDANG PERUBAHAN IKLIM
Authors: Maghfiroh Nailil , Salampessy Yudi LA
Published: March 2019

Isu perubahan iklim di Indonesia harus segera direspon bukan lagi dengan penyediaan teknologi, tetapi direspon secara politik dengan komitmen untuk melaksanakannya. Akan tetapi pemerintahan dan DPR belum menjadikan legislasi Undang-Undang Perubahan Iklim sebagai prioritas. Untuk itu beberapa LSM Lingkungan menjalin komunikasi politik untuk mendorong lahirnya UU tersebut. Artikel menganalisis strategi komunikasi yang diterapkan oleh LSM Lingkungan dalam penyebaran informasi dan mendorong pengesahan UU terkait perubahan iklim. Kajian disusun sebagai studi literatur dengan analisis deskriptif. Disimpulkan bahwa LSM Lingkungan mengkombinasikan strategi komunikasi pembangunan berdasarkan media yang dipakai dan strategi partisipatori. Pemanfaatan saluran komunikasi interpersonal dan massa bertujuan untuk mengoptimalkan persuasi atas pentingnya perilaku adaptif, serta membuka ruang publik untuk partisipasi anggota masyarakat. Belum disahkannya UU Perubahan Iklim mengindikasikan belum tercapainya efek yang diharapkan dari komunikasi politik yang dijalin.
SISTEM KOMUNIKASI DALAM PEMBANGUNAN SOSIAL PASCA BENCANA
Authors: Badri Muhammad
Published: March 2019

Indonesia merupakan daerah rawan bencana alam dan non alam seperti gempa bumi, tsunami, banjir, longsor, kebakaran hutan dan sebagainya. Menghadapi potensi bencana tersebut perlu ada upaya penanggulangan dengan melibatkan banyak pihak, mulai pemerintah, swasta, organisasi non pemerintah, dan masyarakat. Sistem komunikasi diperlukan agar kegiatan penanganan bencana lebih terkoordinasi dengan baik sehingga berjalan efektif dan efisien. Keterlibatan banyak pihak dalam penanganan bencana menunjukkan adanya sistem komunikasi yang berjalan baik secara alamiah maupun melalui intervensi kebijakan. Paradigma sistem komunikasi dalam penanganan bencana harus mengedepankan pemberdayaan masyarakat dibandingkan memberikan bantuan sesaat (charity). Sebagai sebuah sistem, antarelemen  (subsistem) harus saling terkait dan berkoordinasi dalam penanganan pasca bencana mulai tanggap darurat, rehabilitasi dan rekonstruksi. Kegiatan yang dilakukan juga idealnya secara holistik di berbagai sektor secara berkelanjutan. Untuk itu model partisipatif merupakan strategi yang ideal dalam pembangunan sosial dengan tujuan jangka panjang untuk memulihkan kondisi sosial ekonomi masyarakat seperti semula.
STRATEGI KOMUNIKASI POLITIK DIGITAL PASCA-KEBENARAN
Authors: Mustaqim Andika Hendra
Published: March 2019

Post-truth in politics when it is warming up with various phenomena. The research objective revealed and explored in this study is how post-truth digital political communication strategies. The research method uses descriptive qualitative with a qualitative approach with critical paradigm and analysis. The post-truth political communication strategy that will be delivered is applicable and can be applied in the practice of political communication. The strategies are fake news: between facts and lies; near-lie: use the right words to form wrong impressions; deception with self delusion; spin: favorable interpretation of facts; euphemasia; repetition; personalization; and ignoring rationality, prioritizing emotions. The digital political communication strategy is more focused on how to use digital media for the benefit of political communication. The strategies are blogging; influencing public opinion; social media: building enggage and closeness; and mainstream media; focusing entertaining and attractive. These three strategies are based on digital media that are fully utilized in terms of digital political communication post-truth.
MODEL PENGEMBANGAN KOMUNITAS CANGKIR KAMISAN SEBAGAI WADAH HARMONI INTELEKTUAL KOLEKTIF (STUDI EMPIRIS PADA ORGANISASI EKSTRA MAHASISWA IAIN METRO LAMPUNG)
Authors: Wahyuni Desi , Baharuddin A. Zamakhsyari , Fasa Muhammad Iqbal
Published: March 2019

Mahasiswa merupakan agen of change sebagai pembawa perubahan bagi suatu negeri. Mahasiswa memiliki fungsi dan peran sebagai Iron Stock dalam estafet perubahan suatu bangsa. Organisasi sangat penting bagi kalangan mahasiswa dewasa ini. Terlebih, Organisasi mahasiswa ekstra kampus memiliki empat gerakan yang dijadikan sebagai landasan geraknya yaitu: Gerakan politik (berafiliasi dengan golongan-golongan), Gerakan sosial (menjadi motor penggerak terhadap ketimpangan- ketimpangan sosial), Mencetak intelektual (mengadakan seminar-seminar dan kajian ilmiah), Menjaga ideologi masing-masing organisasi. Tulisan dalam paper ini mencoba untuk menawarkan Model Pengembangan Komunitas Cangkir Kamisan Sebagai Wadah Harmoni Intelektual Kolektif. Peran Komunitas Cangkir Kamisan dalam membangun intelektual kolektif di organisasi ekstra kampus IAIN Metro adalah dengan cara berdiskusi untuk hal-hal yang positif untuk kegiatan sosial dengan prinsip social interprenuership. Dengan adanya perbedaan dapat menjadi sebuah kesatuan komunitas yang sangat kokoh dan kuat. Selanjutnya kontribusi Komunitas Cangkir Kamisan mampu menyelesaikan konflik organisasi mahasiswa ekstra kampus IAIN Metro dengan memupuk rasa paersaudaraan dan kekeluargaan.
Başarılı Okuyucular ile Öğrenme Güçlüğü Olan Öğrencilerin Metni Anlamak için Kullandıkları Bilişsel ve Üstbilişsel Stratejiler
Authors: FIRAT Tahsin , KOÇAK Duygu
Published: March 2019

Bu araştırmada, başarılı okuyucular ile öğrenme güçlüğü olan öğrencilerin okuma sürecinde kullanmış oldukları bilişsel ve üstbilişsel stratejiler karşılaştırmalı olarak incelenmiştir. Araştırma, 6.,7., ve 8. Sınıfa devam eden sekiz başarılı okuyucu ve sekiz öğrenme güçlüğü tanısı almış öğrenci ile gerçekleştirilmiştir. Öğrencilerin okuma öncesi, sırası ve sonrası kullandığı stratejileri ve davranışları belirlemek amacıyla odak grup görüşmesi yapılmıştır. Elde edilen veriler, içerik analizi yapılarak yorumlanmıştır. Araştırma sonucunda başarılı okuyucuların metni anlamak için okuma öncesi, sırası ve sonrası birçok strateji kullandıkları belirlenirken, öğrenme güçlüğü olan öğrencilerin çok az strateji kullandığı tespit edilmiştir.
Factors Affecting Molecular Self-Assembly and Its Mechanism
Authors: Tan Hueyling
Published: March 2019

Molecular self-assembly is ubiquitous in nature and has emerged as a new approach to produce new materials in chemistry, engineering, nanotechnology, polymer science and materials. Molecular self-assembly has been attracting increasing interest from the scientific community in recent years due to its importance in understanding biology and a variety of diseases at the molecular level. In the last few years, considerable advances have been made in the use ofpeptides as building blocks to produce biological materials for wide range of applications, including fabricating novel supra-molecular structures and scaffolding for tissue repair. The study ofbiological self-assembly systems represents a significant advancement in molecular engineering and is a rapidly growing scientific and engineering field that crosses the boundaries ofexisting disciplines. Many self-assembling systems are rangefrom bi- andtri-block copolymers to DNA structures as well as simple and complex proteins andpeptides. The ultimate goal is to harness molecular self-assembly such that design andcontrol ofbottom-up processes is achieved thereby enabling exploitation of structures developed at the meso- and macro-scopic scale for the purposes oflife and non-life science applications. Such aspirations can be achievedthrough understanding thefundamental principles behind the selforganisation and self-synthesis processes exhibited by biological systems.
Diálogo entre dos tunantes: ¿un juguete de Talía jesuita?
Authors: González Pascual Guillermo
Published: March 2019

Este trabajo da noticia de un texto que se encuentra en el Ms. 4060 de la BNE. Se trata de la obra teatral breve Diálogo entre dos tunantes, para la que existen numerosos testimonios en impresos anónimos –en pliegos de cordel– del siglo XIX. Creemos que este manuscrito permite responder a muchas de las incógnitas acerca de la obra que no se han resuelto hasta ahora. Por ello, intentaremos mostrar las relaciones del manuscrito con las versiones impresas que se conservan.
Zorrilla a través de los documentos: un archivo virtual
Authors: García Joaquín Pérez
Published: March 2019

Zorrilla a través de los documentos: un archivo virtual. Es un proyecto liderado por el Archivo Municipal de Valladolid, que se enmarca dentro de las actividades que se han desarrollado en la celebración del bicentenario del nacimiento del poeta vallisoletano José Zorrilla. 

Este proyecto ha posibilitado la creación de un archivo virtual que integra documentos custodiados en múltiples instituciones archivísticas y bibliotecarias, las cuales tienen como nexo común dar a conocer a José Zorrilla, su vida, su obra o a la trascendencia de su figura.
«Vida de este capitán», de Alonso de Contreras (introducción de Ismael López Martín)
Authors: Escalante Varona Alberto
Published: March 2019

Reseña del libro Vida de este capitán, de Alonso Contreras (introducción de Ismael López Martín, Colección Penguin Clásicos, Barcelona, Penguin Random House, 2018).

La Vida de este capitán vuelve a editarse bajo el sello de Penguin Random House. Para ello, se reimprime la edición que ya apareció publicada en 2008, en la editorial Reino de Redonda; texto que Penguin recuperó y aprovechó posteriormente, en 2012, para otra impresión prologada por Arturo Pérez-Reverte. Por tanto, nos encontraríamos con la tercera ocasión en que el sello publica las memorias del capitán Contreras en diez años. El principal motivo es, sin duda, comercial, para así ampliar el catálogo de la colección Penguin Clásicos con uno de los textos fundamentales de la literatura autobiográfica española. Pero la editorial no pierde la ocasión de darle un lavado de cara a la edición para incluir en ella una novedad que refuerce su inclusión en la colección. Siguiendo el objetivo principal de Penguin Clásicos, Vida de este capitán se presenta en una edición de bolsillo, asequible en formato y precio, pensada más en la lectura por placer que en la consulta erudita; pero no por ello falta de un breve estudio introductorio y un aparato de notas en el que se destaquen los principales rasgos temáticos y compositivos del texto. La responsabilidad de esta introducción, que no prólogo (al contrario que en las reimpresiones anteriores en Penguin Random House), recae en Ismael López Martín: doctor internacional en Estudios Lingüísticos Filológicos y Lingüísticos por la Universidad de Extremadura y con experiencia docente en la Universidad de Zaragoza. López vuelve a colaborar con Penguin Clásicos, para quienes ya preparó una nueva edición de Don Juan Tenorio, publicada en 2017.
Relación universidad-institución cultural: eje para la formación de una cultura laboral en estudiantes
Authors: Velázquez Quintana Carmen , Batista de los Ríos Dagneris
Published: March 2019

La relación entre la universidad y las instituciones culturales constituye el eje articulador para la realización de la práctica laboral o preprofesional de los estudiantes universitarios. La labor educativa que realiza la Biblioteca Provincial en la gestión de estas prácticas prepara a los estudiantes para que sean capaces de dar respuesta a los problemas que se presentan en su quehacer profesional, lo que se materializa en la formación de una cultura laboral que favorece la modelación de actitudes, de comportamientos y la transformación de los contextos donde interactúan, lo que tributa al desarrollo social.
Solutions and conservation laws of a generalized second extended (3+1)-dimensional Jimbo-Miwa equation
Authors: Daddy Moleleki Letlhogonolo , Motsepa Tanki , Masood Khalique Chaudry
Published: March 2019

In this paper we study a nonlinear multi-dimensional partial differential equation, namely, a generalized second extended (3+1)-dimensional Jimbo-Miwa equation. We perform symmetry reductions of this equation until it reduces to a nonlinear fourth-order ordinary differential equation. The general solution of this ordinary differential equation is obtained in terms of the Weierstrass zeta function. Also travelling wave solutions are derived using the simplest equation method. Finally, the conservation laws of the underlying equation are computed by employing the conservation theorem due to Ibragimov, which include conservation of energy and conservation of momentum laws.
Review of numerical methods for NumILPT with computational accuracy assessment for fractional calculus
Authors: Brzeziński Dariusz W.
Published: March 2019

In the paper we present results of accuracy evaluation of numerous numerical algorithms for the numerical approximation of the Inverse Laplace Transform. The selected algorithms represent diverse lines of approach to this problem and include methods by Stehfest, Abate and Whitt, Vlach and Singhai, De Hoog, Talbot, Zakian and a one in which the FFT is applied for the Fourier series convergence acceleration. We use C++ and Python languages with arbitrary precision mathematical libraries to address some crucial issues of numerical implementation. The test set includes Laplace transforms considered as difficult to compute as well as some others commonly applied in fractional calculus. Evaluation results enable to conclude that the Talbot method which involves deformed Bromwich contour integration, the De Hoog and the Abate and Whitt methods using Fourier series expansion with accelerated convergence can be assumed as general purpose high-accuracy algorithms. They can be applied to a wide variety of inversion problems.
Benefits of a dance group intervention on institutionalized elder people: a Bayesian network approach
Authors: Navarro-Pardo E. , González-Pozo L. , Villacampa-Fernández P. , Conejero J.A.
Published: March 2019

The present study aims to explore the effects of an adapted classical dance intervention on the psychological and functional status of institutionalized elder people using a Bayesian network. All participants were assessed at baseline and after the 9 weeks period of the intervention. Measures included balance and gait, psychological well-being, depression, and emotional distress.

According to the Bayesian network obtained, the dance intervention increased the likelihood of presenting better psychological well-being, balance, and gait. Besides, it also decreased the probabilities of presenting emotional distress and depression. These findings demonstrate that dancing has functional and psychological benefits for institutionalized elder people. Moreover it highlights the importance of promoting serious leisure variety in the daily living of institutionalized elder adults.
The high accuracy conserved splitting domain decomposition scheme for solving the
parabolic equations
Authors: Zhou Zhongguo , Li Lin
Published: March 2019

In this paper, the high accuracy mass-conserved splitting domain decomposition method for solving the parabolic equations is proposed. In our scheme, the time extrapolation and local multi-point weighted average schemes are used to approximate the interface fluxes on interfaces of sub-domains, while the interior solutions are computed by one dimension high-order implicit schemes in sub-domains. The important feature is that the developed scheme keeps mass conservation and are of second-order convergent in time and fourth-order convergent in space. Numerical experiments confirm the convergence.
Predecessors and Gardens of Eden in sequential dynamical systems over directed graphs
Authors: Aledo Juan A. , Diaz Luis G. , Martinez Silvia , Valverde Jose C.
Published: March 2019

In this work, we deal with the predecessors existence problems in sequential dynamical systems over directed graphs. The results given in this paper extend those existing for such systems over undirected graphs. In particular, we solve the problems on the existence, uniqueness and coexistence of predecessors of any given state vector, characterizing the Garden-of-Eden states at the same time. We are also able to provide a bound for the number of predecessors and Garden-of-Eden state vectors of any of these systems.
A theoretical model for the transmission dynamics of HIV/HSV-2 co-infection in the presence of poor HSV-2 treatment adherence
Authors: Mhlanga A.
Published: March 2019

Herpes simplex virus (HSV-2) triples the risk of acquiring human immunodeficiency virus (HIV) and contributes to more than 50% of HIV infections in other parts of the world. A deterministic mathematical model for the co-interaction of HIV and HSV-2 in a community, with all the relevant biological detail and poor HSV-2 treatment adherence is proposed. The threshold parameters of the model are determined and stabilities are analysed. Further, we applied optimal control theory. We proved the existence of the optimal control and characterized the controls using Pontryagin’s maximum principle. The controls represent monitoring and counselling of individuals infected with HSV-2 only and the other represent monitoring and counselling of individuals dually infected with HIV and HSV-2. Numerical results suggests that more effort should be devoted to monitoring and counselling of individuals dually infected with HIV and HSV-2 as compared to those infected with HSV-2 only. Overall, the study demonstrate that, though time dependent controls will be effective on controlling HIV cases, they may not be sustainable for certain time intervals.
Solution of two point boundary value problems, a numerical approach: parametric difference method
Authors: Pandey P.K.
Published: March 2019

In this article, we have presented a parametric finite difference method, a numerical technique for the solution of two point boundary value problems in ordinary differential equations with mixed boundary conditions. We have tested proposed method for the numerical solution of a model problem. The numerical results obtained for the model problem with constructed exact solution depends on the choice of parameters. The computed result of a model problem suggests that proposed method is efficient.
Migration in Sub-State Territories with Historical-Linguistic Minorities: Main Challenges and New Perspectives
Authors: Medda-Windischer Roberta
Published: March 2019

Migration is an important reality for many sub-national autonomous territories where traditional-historical groups (so-called ‘old minorities’) live such as Flanders, Catalonia, South Tyrol, Scotland, Basque Country, and Quebec. Some of these territories have attracted migrants for decades, while others have only recently experienced significant migration inflow. The presence of old minorities brings complexities to the management of migration issues. Indeed, it is acknowledged that the relationship between ‘old’ communities and the ‘new’ minority groups originating from migration (so-called ‘new minorities’) can be rather complicated. On the one hand, interests and needs of historical groups can be in contrast with those of the migrant population. On the other hand, the presence of new minorities can interfere with the relationship between the old minorities and the majority groups at the state level and also with the relationship between old minorities and the central state as well as with the policies enacted to protect the diversity of traditional groups and the way old minorities understand and define themselves. The present lecture analyses whether it is possible to reconcile the claims of historical minorities and of new groups originating from migration and whether policies that accommodate traditional minorities and migrants are allies in the pursuit of a pluralist and tolerant society.
A simple solution to the specification error
Authors: Alghalith Moawia
Published: March 2019

We develop a simple method that completely eliminates the specification error and spurious relationships in regression. Furthermore, we introduce a stronger test of causality. We apply our method to oil prices.
The Use of DigSilent Power Factory Simulator for “Introduction into Power Systems” Lectures
Authors: Astapov Victor , Palu Ivo , Vaimann Toomas
Published: March 2019

The first-year students at the technical universities often face the problem of using the previously acquired knowledge at a higher level required by engineering education. To solve this problem, the authors developed a series of lectures dedicated to establishing theoretical background, based on simulations in DigSILENT Power Factory software. In the lectures, the physical values and quantities as well as the purpose and characteristics of the power equipment are explained on the example of the simple models.

This article includes the detailed description of a lesson “Introduction into Power Systems” and presents some models and ways of explaining the material. The sections below concentrate on the lecture format focusing on methods for explanation of physical quantities and introducing power system components. Sequential parts create the mosaics of grid, with the following description of basic laws and principles in power systems.
A Survey of Broken Rotor Bar Fault Diagnostic Methods of Induction Motor
Authors: Asad Bilal , Vaimann Toomas , Rassõlkin Anton , Kallaste Ants , Belahcen Anouar
Published: March 2019

Electrical machines, induction motors in particular, play a key role in domestic and industrial applications. They act as a work horse in almost every industry and are responsible for a big proportion of total generated electricity consumption worldwide. The faults in induction motors are degenerative in nature and can lead to a catastrophic situation if not diagnosed earlier. The failures can cause considerable financial loss in the form of unexpected downtime. Broken rotor bar is a very common and frequently occurring fault in most of industrial induction motors. To select a better, more accurate and reliable fault diagnostic technique, this paper presents a comprehensive literature survey on the existing motor current signature analysis (MCSA) based fault diagnostic techniques. Different well-known MCSA based fault diagnostic techniques are summarized in the form of basic theories, considering complexity of their implementation, merits and demerits.
Phase Characteristics of Models of GaAs Gyroelectric Waveguides with Temperature Sensitive Anisotropic Dielectric Layers in Case of One Layer
Authors: Plonis Darius , Katkevičius Andrius , Belova-Plonienė Diana
Published: March 2019

Models of open cylindrical multilayer gyroelectric-anisotropic-gyroelectric waveguides are presented in this paper. The influence of density of free carriers, temperature and the presence of the external dielectric layer on the wave phase characteristics of the models of n-GaAs waveguides has been evaluated. Differential Maxwell’s equations, coupled mode and partial area methods have been used to obtain complex dispersion equation of the models of gyroelectric-anisotropic-gyroelectric waveguides with or without the temperature sensitive external anisotropic dielectric layer. The analysis has shown that the phase characteristics are practically unchanged when the density of electrons is equal to N = (1017–5·1018) m−3, d/r
s = 0, the changes of wave phase coefficients are obtained in the models of waveguides with the external anisotropic dielectric layer. The largest differences of wave phase coefficient are obtained when the density of electrons is N = 1021 m−3. The external dielectric layer improves the control of gyroelectric n-GaAs waveguides with temperature.
Design and Control of a STATCOM for Non-Linear Load Compensation: A Simple Approach
Authors: Tripathi Saurabh Mani , Barnawal Prakash Ji
Published: March 2019

This paper presents a systematic procedure to design a simple control for a three-phase VSC-based static synchronous compensator (STATCOM) in order to overcome the problems caused by the presence of the non-linear load at the point of common coupling (PCC). The proposed control method regulates the STATCOM in such a way that the source quadrature current component is forced to be zero so that only the active current component is drawn from the source and the harmonic and reactive current demands of the non-linear load are met by the STATCOM. The tuning of the inner and outer loop PI controllers is carried out with the help of the modulus optimum and symmetric optimum criteria, respectively. At last, a few case studies are presented using MATLAB simulation to exemplify the success of the proposed control method.
Country Branding: What Branding? Relevant Terminologies and their Possible Interpretations in the Case of Countries
Authors: Papp-Váry Árpád Ferenc
Published: March 2019

Subject and purpose of work: The study systematizes concepts and terms related to country branding such as nation branding, state branding, place branding, destination branding, location branding, territory branding, and region branding as well as exploring the similarities and differences among these expressions.

Materials and methods: First of all, the study reviews relevant literature. In this context it also analyzes the most relevant country case study articles with titles that may include country branding or related terms in many forms.

Results: At the end of the study, a summary table systematizing the terminology of the topic is included, which is a novel approach to the subject. The practical significance of the study becomes clear if organizations involved in the development of country brands consider the abovementioned theoretical framework while developing their own strategies.

Conclusions: As a result of the systematization, country branding will be more consciously used in the subchapters of strategic materials discussing how to increase country competitiveness.
Opportunities and Barriers for Smart Rural Development in Poland in Light of Field Studies
Authors: Dudek Michał
Published: March 2019

Subject and purpose of work: The paper focuses on identifying and assessing selected conditions and limitations of smart rural development in Poland. The concepts of smart development pointed out in the literature were used to analyse the results of field studies carried out in 2011 and 2016 in ten purposefully selected villages located in various regions of the country.

Materials and methods: The conclusions were drawn on the basis of empirical material which took a form of quantitative data and qualitative information gathered from the interviews with village mayors (sołtys) and observations of the interviewers. For the purpose of the paper the statistical methods were used and the analysis of the content of responses was performed.

Results and conclusions: The results of the surveys indicated a presence of both the potential of smart development in the surveyed villages and the barriers to it. The important determinants to activate local economic progress based on knowledge, education and new technologies were connected mainly with a convenient location and the environmental and cultural resources available. As for an insufficient level of valorisation of the aforementioned elements, it proved to be an obstacle to this process, which was largely due to the limited accumulation of human and social capital.
Protoeconomics - Elements of Economics in Antiquity
Authors: Wójcicki Włodzimierz
Published: March 2019

Subject and purpose of work: The work presents the emergence and shaping of basic economic issues since the dawn of human economic activity. Contemporary views on important economic issues have their roots in antiquity. The shaping of concepts such as money, interest, contract, credit as a part of the law, began a long time ago and exerted an influence on the way they are understood today.

Materials and methods: The basis for the considerations is the study of literature on the history of the development of economics and the science of management in economic, philosophical and ethical aspects. The work has shown the non-linear nature of the development of new phenomena emerging in volatile political, technical, religious and moral conditions, which are largely spontaneous, and a reciprocal overlap of various fields of knowledge in a general and individual sense. Particular discoverers were found to present a wide spectrum of interests.

Results: Historically, the development of economic knowledge began with the issues from the border of economics and management, from microeconomics (household) to macroeconomics (money); little information concerns large undertakings such as irrigation systems, pyramids or waging wars.

Conclusions: Generally speaking - monarchs’ edicts came before the deliberations of thinkers, concrete reasoning came before abstract considerations.
Design With SADSF Method and Analyses of Elastic Properties of Torsion-Loaded Double-Tee Section With Torsional Box
Authors: Markiewicz I.
Published: March 2019

The work presents the results of preliminary strength design of a thin-walled structure based on double-tee section loaded with a torsion moment. One of the solutions to this problem is considered, in which the torsional box is introduced in the central part. Then, one constructs a series of solution variants that differ in the torsional box length. In the design one uses the method of statically admissible discontinuous stress fields (SADSF) assuming the condition of equalized equivalent stress in the limit state. The work is complemented with elastic FEM analyses of one of the solution variants. Using this example, one shows good load-carrying properties of structures designed with the SADSF method, and proves that they could be several times better than the properties of structures designed with traditional or intuitive ways.
Model Order Reduction Technique Applied on Harmonic Analysis of a Submerged Vibrating Blade
Authors: Tengs E. , Charrassier F. , Holst M. , Storli Pål-Tore
Published: March 2019

As part of an ongoing study into hydropower runner failure, a submerged, vibrating blade is investigated both experimentally and numerically. The numerical simulations performed are fully coupled acoustic-structural simulations in ANSYS Mechanical. In order to speed up the simulations, a model order reduction technique based on Krylov subspaces is implemented. This paper presents a comparison between the full ANSYS harmonic response and the reduced order model, and shows excellent agreement. The speedup factor obtained by using the reduced order model is shown to be between one and two orders of magnitude. The number of dimensions in the reduced subspace needed for accurate results is investigated, and confirms what is found in other studies on similar model order reduction applications. In addition, experimental results are available for validation, and show good match when not too far from the resonance peak.