bluuebunny/crossref_metadata_2025 huggingface dataset:
Peculiarities of laser welding of thin parts of aerospace equipment
Authors: Smelov V. G. , Sotov A. V. , L’vov M. V.
Published: May 2017

In this paper, the laser welding methodology technological process optimization of shallow thickness aerospaceconstructions was considered. The methodology consists in selecting of multivariate iterative processparameters. Using this methodology can significantly reduce the technological preparation time of productionand the proportion of experimental research. Experimental confirmation was work on laser butt welding parts forshallow thicknesses, material welded samples - nickel-based alloys. Work was carried out to determine thechemical composition of the alloy samples, modeling and development of a special device for welding products.Laser welding is carried out on the process plant includes a pulsed solid-state laser YAG:Nd with a wavelengthof 1,06 microns. On the basis of the developed method of optimization parameters were selected welding process.According to the results of work defines the quality of the welded joint specimens using metallographic examination of the weld, and testing of mechanical properties of butt weld specimens were performed, the tensilestrength was determined. The developed method of process optimization of laser welding of parts of smallthickness allows for high quality welds free of defects in the surface layer.
Formation of a method of choosing rational values of ultralow power turbine parameters in a turbine drive system
Authors: Kalabuhov D. S. , Grigoryev V. A. , Rad’ko V. M.
Published: May 2017

The problem of structural and parametric optimization of ultralow power turbine (ULPT) in the system ofturbine drive (ULPTD) on the initial design stage is formulated. It is described a method and algorithm for selectionof rational value sand schemes of ULPT during optimization. Optimization problem involves the use of parametric minimax principle of optimality in the choice of a rational variant of the turbine, which ensures the reliabilityof selected solutions. The estimation of the reliability and method effectiveness developed by its validationwith the method of designing multimode ULPTD аnd results of computational experiments. The examples ofenergy and mass efficiency improving of aerospace turbine drive special purpose using the developed methodare given. Validation was carried out by the example of the initial design of multi-mode centripetal turbine drivefor special purposes. It has been shown that the efficiency by mass turbine drive special purpose can be enhancedwith minimal loss in efficiency, if the two-criteria optimization problem solving. Its decision at a loss in terms ofefficiency and weight of 1.8% and 11% with respect to the results of a one-criterion optimization possible toincrease the efficiency of turbine drive initial version by 6.5% and reduce its weight by 25%. Also it is formed alook of turbine drive switching device. The use of axial turbine instead of centripetal at worst case of originaldata has allowed to reduce the specific consumption of working fluid and the specific drive mass on the 24 and 48%, respectively.
Development of a prototype of a multi-loop closedbrayton cycle gas turbine power system
Authors: Arbekov A. N. , Novitskiy B. B.
Published: May 2017

Aim is to develop the prototype of a multi-loop closed-Brayton Cycle gas turbine power system, whichallows to simulate the cosmic power plant capacity from tens to hundreds of kW intended for food orelectrorocket thermal engines with electric heating, as well as the powerful energy systems of spacecraft for variouspurposes. Creating a prototype model allows to study the joint operation of two gas-turbine power convertersin a single circuit of the total gas heater (which acts as an electric heater), build a control algorithm modulesin transitional processes, investigate the processes of starting and stopping of the modules, as well as select theoptimal control algorithm starting and to identify the fundamental problems in the design and construction of theinstallation in the early stages of development of space multiloop systems. The paper contains estimates of themain parameters of a closed gas turbine plant and the optimization cycle to allow the use of existing sites. Alsopresented an algorithm for calculating. Based on the data as the working fluid was chosen gelieksenonovayamixture with a molar mass of 83.9 kg/kmol, which is an analogue of the thermodynamic krypton. The parametersof a multi-loop closed gas turbine plant and layout version of the two-loop closed-Brayton Cycle gas turbinepower system.
Experimental investigation of a small-sized centrifugal compressor for a closed-brayton cycle gas turbine power system
Authors: Arbekov A. N. , Novitskiy B. B.
Published: May 2017

An experimental characterization of small-size centrifugal compressor for turbine-driven generator-compressor unit of a closed-Brayton Cycle gas turbine power plant is presented. Operating fluid is a mixture ofinert gases. Bench equipment (replacement of pressure sensors and systems for collecting and processing signals)was upgraded for characterization to complete control of research. The paper describes the test facility, theequipment used and the method of research performance. Test runs were carried out in air compressor, with acover of the throttle before the surge. Comparison with the calculated point restated at the speed of the experiments(30 000 rev / min) is presented. The influence of the physical properties of the working fluid on the performanceof a centrifugal compressor at the calculated pressure ratio (1.75) is evaluated. Experimental researchon Xenon and helium mixture (molar mass of argon) and argon at full throttle and varying speeds from 23700 to30300 rpm is presented.
Automated thermovacuum firing test facility for testing and research of workflow in low-thrust rocket engine on hypergolic propellants
Authors: Galperin R. N. , Ivashin Y. S. , Nigodjuk V. E. , Ryzhkov V. V. , Sulinov A. V.
Published: May 2017

The paper presents a description and the technical characteristics of newly created and upgraded systemsof automated thermovacuum fire stand for testing and research of the workflow of liquid rocket thrusters (smallthrust jet engines) working on hypergolic propellant components. The stand allows to determine the energy anddynamic characteristics of small thrust jet engine with thrust from 0.1 to 100 N in the continuous and pulsed operatingmodes; to explore the intrachamber workflows; to study kinetic properties of gasified liquid intermediatesof liquid-phase interaction of hypergolic propellants; to explore the thermal state of the engine under highaltitude conditions; to provide research of the power, heat and polluting impacts of small thrust jet engine jet onelements of structure surface of the spacecraft; to explore of diagnostic methods of the small thrust jet enginefunctioning and others. Automated measuring and information system of the stand provides small thrust jet enginemanagement on a given cyclogram; carrying out the calibration of channels for measurement of parametersof small thrust jet engine: thrust, flow rate of components, pressure, temperature, etc.; collecting informationfrom the measuring channels of the stand during tests and information storage on the hard disk; processing ofmeasurement results on the computer during the test and their representation in the required form (protocols,characteristics, charts and tables); formation of database of engines studied. For measuring the temperature of theouter surface of the chamber of small thrust jet engine is used contactless method using an infrared thermal imagingsystem. Complex work for improvement of element base and systems of automated thermovacuum firestand for testing and research of workflow of small thrust jet engine working on hypergolic fuel components wasexpanded the opportunities of stand in the field of new tasks statement for workflow working off and increasethe accuracy of the main parameters measurement for the engines.
Research of gas turbine engine operation in dust-filled atmosphere
Authors: Abdullin B. R. , Akmaletdinov R. G. , Goumerov K. S. , Nigmatullin R. R.
Published: May 2017

The article describes the experimental data on the effect of erosion the turbomachines elements under theinfluence solids on the engine performance. The analysis was performed for the generator of compressed air forthe aggregate of cleaning pipelines and the gas jet treatment plants temporary technological railways. The aggregateof cleaning pipelines was operated under conditions of high concentrations of dust in the air - in the semidesert.Both plants are based on the converted aircraft twin-shaft turbojet engines. According to the model oferosive wear was set, that the depth of erosion depends on the dimension of the engines. Also shown is the abilityto detect impending failure of the engine working in a dusty atmosphere, based on trend analysis of its parametersusing various statistical smoothing options: simple linear trend, exponential trend, damped trend. Revealedthat the first of the considered parameters controlled workflow approach to engine failure reacts highpressure rotor speed. Timely detection of trends in parameters due to the development of a number of irreversibleprocesses will predict current and stable operation of the critical state of gas turbine engines, the correspondingloss of gasdynamic stability of the engine, so as to use the work on modes near with the marginal stability ofthe compressor is unacceptable.
Phenotypic and molecular determination of anthracnose disease resistance in Lake Van Basin’s bean genotypes (Phaseolus vulgaris L.)
Authors: EKINCIALP Aytekin , SENSOY Suat
Published: May 2017

In this study, the resistance levels to anthracnose disease [Colletotrichum lindemuthianum (Sacc. and Magnus) Lambs. Scrib.] of 92 bean genotypes collected from different parts of the Lake Van Basin were investigated by artificial inoculation and molecular markers. The resistance levels of bean genotypes to the isolate 11# of anthracnose disease were determined by classical inoculation method in a climate chamber condition, and the presence of resistance gene related markers in bean genotypes was determined by using four SCAR primers [SAS13 (950 bp, Co-42), SC08 (910 bp, Co-4), SF10 (1072 bp, Co-10), SZ04 (567 bp, Co-6)] and one RAPD [OA181500 (1500 bp, Co-15)] primer. In the artificial inoculation, the bean genotypes were evaluated according to the 0-9 scale, and the four of them having a value between 0 and 3 were found as resistant to this isolate of anthracnose, but the rest of them having a value between 4 and 9 were determined as sensitive. With molecular markers, it was found that the 82 bean genotypes had the resistant Co-42 allele; the 54 bean genotypes had the resistant Co-4 allele; the 6 bean genotypes had the resistant Co-10 allele; the 36 bean genotypes had the resistant Co-6 allele; and the 15 bean genotypes had the resistant Co-15 allele. The only bean genotype having all resistance markers was the genotype G81, whereas the bean genotypes G27, G28, G40, G76, and G86 had no resistance associated molecular markers.
The Technologisation of Education and the Pathway to Depersonalisation and Dehumanisation
Authors: Laura Ronald Samuel , Hannam Fraser Douglas
Published: May 2017

Contrary to the conventional wisdom, it is a central contention of this piece that there exists a growing crisis of depersonalisation and dehumanisation which has emerged from the computechnological texturing of contemporary society. We shall endeavour to show that the primary mode of electronic communication is characterised by the covert depersonalisation of human relations. Depersonalisation, as we shall define this computechnological dimension of the problem refers to the condition of human relationships wherein we have come progressively to substitute face-to-face human exchange in preference for technologically mediated forms of electronic communication. One significant paradox to be explored here will reveal that we personalise and anthropomorphise our computechnology, while simultaneously depersonalising ourselves and treating others as if they were machines. The criterion of 'employment-efficiency-expectation', as we call it, is now determined by the work capabilities of computechnology, not the work-potential of humans defined in terms of integrated well-being and mental health. When we increasingly treat each other as machines, and our machines as humans, the time has truly come to reflect not only on how we value our relationships with each other, but on the way in which we have come, somewhat mindlessly, to value the very tools of technology which depersonalise and in turn dehumanise those relationships.
Rola mikroRNA w patogenezie i przebiegu chorób wątroby
Authors: Szeląg Sylwia , Kurzawski Mateusz
Published: May 2017

MikroRNA to krótkie niekodujące cząsteczki RNA regulujące ekspresję genów na poziomie potranskrypcyjnym. Odgrywają one istotną rolę w wielu procesach biologicznych, takich jak różnicowanie komórek, odpowiedź immunologiczna, apoptoza czy regulacja metabolizmu. Są też bezpośrednio lub pośrednio zaangażowane w rozwój i przebieg wielu schorzeń. W przypadku chorób wątroby, oprócz zmian ekspresji miR-122, swoistego dla tego narządu, obserwuje się także zmiany profilu innych miRNA których ekspresja zależy od etiologii schorzenia. Analiza profilu mikroRNA może mieć zatem wartość diagnostyczną i prognostyczną, a także może być w przyszłości przydatna w planowaniu terapii chorób wątroby.
Treatment of post-traumatic ankle ligament adhesions – case report
Authors: Parchimowicz Miłosz , Michoński Adam , Parchimowicz Oktawia , Lubkowska Anna
Published: May 2017

Ankle sprains are the most common sports injuries, but they also happen to people that do not do any sports at all. Most of them are inversion-type traumas which could harm soft tissues like lateral collateral ligaments, capsule and peroneal tendons. The vast majority of these injuries are grade ͕ sprains where there is no clinical instability. Very often treatment is based on conservative protocols, i.e. RICE (rest, ice, compression, elevation), immobilization and avoiding weight bearing. Besides the above procedures, in the following period of time some modalities are planned, and there is not enough attention paid to regaining function after the acute stage. Such a conservative approach over a longer period of time should be reserved for fractures and grade ͗ sprains because immobilization leads to loss of proprioception and the formation of inelastic scar tissue caused by ligamentous adhesions. It takes about 6 weeks to form adhesions, and clinically those patients complain about pain, sometimes also with swelling, after some exertion. One treatment option is deep friction and manipulation of adherent lateral ligaments to break the adhesions. The aim of this paper is to show an alternative treatment option which is safer than manipulation. The authors propose the use of a shockwave therapy in combination with a home exercise stretching programme in positions reproducing the trauma mechanism to remodel the scar tissue. Additionally, there should be proprioception exercises for prophylaxis and regaining normal function.
Las ciencias ambientales. Una caracterización desde la epistemología sistémica
Authors: Jasso Gerardo Morales
Published: May 2017

En este texto tiene como objetivo repensar las ciencias ambientales para generarles un criterio de demarcación y establecer su estatuto epistemológico. Se parte de una categorización preexistente de definiciones de “ambiente” que vincula las definiciones a dos epistemologías rivales, para acotar las concepciones de “problemática ambiental” y “ciencias ambientales” y vincular las distintas propuestas sobre la identidad de las ciencias ambientales a los modelos disciplinario, multidisciplinario, interdisciplinario y transdisciplinario. A partir de un examen de las posturas escépticas y dogmáticas sobre la existencia de las ciencias ambientales, se propone una definición que, desde el sistemismo, vincula “ambiente”, “problemática ambiental” y “ciencias ambientales” sin las contradicciones que conlleva el dualismo; de manera que nos permite establecer algunos fundamentos que compartirían las ciencias ambientales y así identificar las disciplinas que pertenecen a estas ciencias. Con lo cual se pretende plantear a las ciencias ambientales como disciplinas que conllevan el gérmen de una revolución científica. Lo que las aleja de ciencias naturales y de ciencias sociales, así como de humanidades y tecnologías. Revolución científica que, de completarse, no sólo implicaría una ruptura epistemológica, también un cambio de ontología y, en suma, un cambio de matriz disciplinaria.
Age-dependent annual effective dose estimations of 226Ra, 232Th, 40K and 222Rn from drinking water in Baling, Malaysia
Authors: Ahmad Nisar , Rehman Jalil ur , Rafique Muhammad , Nasir Tabassum
Published: May 2017

Natural radioactivity and radon concentration were studied in drinking water samples from Baling area, Kedah, Malaysia, using HPGe and RAD-7 detectors, respectively. Average concentrations obtained for 226Ra, 232Th, 40K and 222Rn were 44.2 ± 3.9, 38.1 ± 5.0, 140.9 ± 10.6 mBq l−1 and 5.7 ± 0.68 Bq l−1, respectively. Cumulative annual effective doses due to ingestion of 226Ra, 232Th, 40K and 222Rn for infants, children and adults were estimated to be 13.77, 2.857 and 2.581 μSv y−1, respectively. Average annual effective doses due to inhalation of radon released in the air during consumption and ingestion of drinking water were separately estimated to be 15.2 and 1.2 μSv y−1, respectively. A positive correlation (R2 = 0.87) was observed between 222Rn and 226Ra determined by RAD-7 and HPGe detectors, respectively. In this study, the estimated annual effective doses due to ingestion of 226Ra, 232Th, 40K and 222Rn for infants, children and adults were found to be below the World Health Organization (WHO) recommended limits of 0.1 mSv y−1.
A Psycho-Behavioral Perspective on Modelling Obsessive-Compulsive Disorder (OCD) in Animals: The Role of Context
Authors: Wolmarans De Wet , Stein Dan J. , Harvey Brian H.
Published: May 2017

Obsessive-compulsive disorder is a heterogeneous and debilitating condition,
characterized by intrusive thoughts and compulsive repetition. Animal models of OCD are
important tools that have the potential to contribute significantly to our understanding of the
condition. Although there is consensus that pre-clinical models are valuable in elucidating
the underlying neurobiology in psychiatric disorders, the current paper attempts to prompt
ideas on how interpretation of animal behavior can be expanded upon to more effectively
converge with the human disorder. Successful outcomes in psychopharmacology involve
rational design and synthesis of novel compounds and their testing in well-designed animal
models. As part of a special journal issue on OCD, this paper will 1) review the psychobehavioral
aspects of OCD that are of importance on how the above ideas can be articulated,
2) briefly elaborate on general issues that are important for the development of animal models
of OCD, with a particular focus on the role and importance of context, 3) propose why
translational progress may often be less than ideal, 4) highlight some of the significant contributions
afforded by animal models to advance understanding, and 5) conclude by identifying
novel behavioral constructs for future investigations that may contribute to the face, predictive
and construct validity of OCD animal models. We base these targets on an integrative
approach to face and construct validity, and note that the issue of treatment-resistance in
the clinical context should receive attention in current animal models of OCD.
Teoría de la metáfora y cognición corporeizada ¿Cómo se introduce la teoría de la metáfora conceptual en los estudios musicales?
Authors: Jacquier María de la Paz , Callejas Leiva Daniel
Published: May 2017

La Teoría de la Metáfora de Lakoff y Johnson señala que parte de nuestra forma de comprender el mundo es metafórica, en el sentido de vincular patrones experienciales de un dominio cognitivo conocido con otro menos conocido. En este proceso participan ciertas estructuras imagen-esquemáticas, interrelacionadas y dinámicas, que surgen de nuestra propia experiencia corporal con el entorno. Considerando esto, podemos situar esta teoría dentro de las teorías cognitivas corporeizadas. Algunos investigadores han tomado la Teoría de la Metáfora Conceptual para explicar la experiencia y la cognición en el ámbito musical, donde se observan diferentes interpretaciones e implicancias. Proponemos, entonces, analizar diferentes componentes de la teoría, integrando los estudios en música ya existentes, a partir de cuatro niveles explicativos: (i) el origen corporeizado de los esquemas-imagen como un estrato profundo de base sensorio-motora; (ii) la proyección metafórica como un proceso que depende de esa experiencia corporal; (iii) la metáfora lingüística como descripciones verbales de una experiencia y comprensión metafórica; y (iv) las representaciones gráficas de los esquemas-imagen en la explicación teórica y la grafía como descripción de la experiencia musical.
Percepción interna y externa de la distribución de las voces en un coro gospel
Authors: Pelé Alina , Payri Blas
Published: May 2017

Un debate activo en dirección coral es la posición idónea que deben adoptar las cuerdas del coro: soprano, alto, tenor y bajo (SATB). Grabamos un coro gospel con su director y sala de ensayo habituales, combinando 2 tipos de canto (vertical o contrapuntístico), 2 acompañamientos (a cappella o con instrumentos), y las 4 distribuciones más frecuentes en los coros gospel. Los propios coristas (N=33) han evaluado el sonido global coral mientras cantaban (percepción interna). Los coristas (N=24) y un grupo de músicos profesionales (N=14) evaluaron la grabación del coro del punto de escucha del director (percepción externa).Los resultados muestran una preferencia significativa por la distribución coral clásica en todos los casos. Hay una alta concordancia en las respuestas. La presencia de instrumentos reduce la valoración. La preferencia está correlacionada con la homogeneidad (escucha externa) y con la homogeneidad y con la facilidad de oírse (escucha interna). La escucha interna provoca más diferencias de preferencia entre distribuciones. Los hombres son más sensibles a la distribución para la facilidad de cantar y de oír su voz, prefiriendo distribuciones donde las voces graves están detrás. Las mujeres no distinguen entre distribuciones para la facilidad de cantar y oírse.
Examenes de admisión para músicos. Una mirada a la ideología, las concepciones y expectativas sobre la formación profesional
Authors: Holguín Tovar Pilar Jovanna
Published: May 2017

El presente trabajo tiene como propósito conocer e interpretar el pensamiento de los ingresantes en un programa de música. Los aspirantes, generalmente, son una población heterogénea, entendida desde la perspectiva del conocimiento previo musical y del desempeño académico que presentan durante el primer semestre en la universidad. Por lo anterior, surgen cuestiones como: ¿Cuál es el perfil del ingresante? ¿Cuáles son las concepciones acerca de la profesión? ¿Cuáles son sus expectativas en el aprendizaje de la educación auditiva? ¿Cuáles son las dificultades que presentan en el primer semestre en esta asignatura?Para el acercamiento a estas respuestas se procedió a la aplicación de dos encuestas en dos momentos: el primero correspondiente a los exámenes de admisión de 2011, y el segundo correspondiente al primer semestre de 2012. Se eligieron 33 de ellas que contienen información de 2011 y 2012, se realizó la tipificación de datos correspondientes para establecer el conocimiento musical anterior al ingreso y el tiempo de práctica, y se establecieron categorías preliminares para conocer los imaginarios relacionados con su concepto de música y las habilidades que ellos consideran básicas para el aprendizaje.
La Teología de la Liberación: pastoral y violencia revolucionaria
Authors: Bedolla Villaseñor Pastor
Published: May 2017

El artículo hace un balance general de la relación entre la Teología de la Liberación y la realidad histórica signada por la violencia, a la que se enfrentaron los más destacados representantes de la pastoral de esta corriente latinoamericana durante el siglo xx. El posicionamiento de estos últimos frente a la violencia de carácter revolucionario funge como hilo conductor de este trabajo. Tras el acercamiento introductorio a la historia del surgimiento de la T.L., es presentada parte de la complejidad del parecer de estos teólogos que reflexionaron sobre la legitimidad histórica de la violencia revolucionaria como instrumento histórico de emancipación.
ANALISIS TEMA SKRIPSI MAHASISWA MENGGUNAKAN DOCUMENT CLUSTERING DENGAN ALGORITMA LINGO
Authors: Mustikasari Dyah
Published: May 2017

Dalam dunia teknologi informasi, banyak sekali topik yang dapat diangkat menjadi tema skripsi. Sayangnya, tidak jarang mahasiswa mengambil tema skripsi yang sama dengan tema skripsi mahasiswa angkatan sebelumnya. Karena memiliki kesamaan tema, akhirnya muncullah judul-judul skripsi yang hampir mirip. Hal ini tentu membuat penelitian di kalangan mahasiswa tidak dapat berkembang dengan cepat. Seharusnya tema yang sudah sering diangkat diganti dengan tema-tema baru yang sesuai dengan perkembangan jaman. Penelitian ini bertujuan untuk menganalisa tema-tema skripsi yang sering digunakan mahasiswa pada rentang waktu tertentu. Tema skripsi dapat dianalisa dari judul dan abstraknya. Karena data yang digunakan pada penelitian ini adalah data tekstual, maka analisa dilakukan dengan  metode pada text mining, yakni document clustering menggunakan algoritma clustering LINGO. Document clustering dengan algoritma LINGO diaplikasikan menggunakan perangkat lunak Carrot2 Workbench.Hasil penelitian ini berupa klaster-klaster yang beranggotakan dokumen masukan. Setiap kelompok memiliki label. Label mencerminkan kesamaan anggota pada kelompok tersebut. Dari label klaster ini dapat dianalisa tema skripsi.
Modelagem física experimental de mecanismos de deformação gravitacional simulando múltiplos intervalos superpressurizados: Aplicação à bacia da foz do Amazonas*
Authors: Silva Rodrigo Jorge Perovano da , Vendeville Bruno Claude , Reis Antonio Tadeu dos , Silva Cleverson Guizan , Gorini Christian , Araújo Érika Ferreira da Silva
Published: May 2017

A superposição estratigráfica de intervalos contendo superpressurização de fluido intersticial pode atuar como múltiplos níveis de descolamento sobre os quais a deformação gravitacional da cobertura sedimentar se desenvolve, como sugerido para a Bacia da Foz do Amazonas. Neste trabalho foram desenvolvidos modelos físicos experimentais objetivando simular as duas fases principais de deformação gravitacional propostas para a bacia: uma fase inicial de deslizamento gravitacional (fase pré-leque), seguida de uma fase de espalhamento gravitacional em função da implantação do Leque do Amazonas desde o Mioceno Superior (10,5 Ma). Os experimentos foram simulados com a injeção de fluidos em duas camadas incompetentes (constituídas por microesferas de sílica) que atuaram como níveis de descolamento basais acomodando a deformação gravitacional da seção rúptil sobrejacente. O comportamento mecânico dessas camadas variou no tempo e no espaço em função da magnitude da pressão do fluido intersticial e da sobrecarga aplicada. A configuração do arcabouço estrutural e a interação entre os níveis plástico-friccionais simulados nos modelos se assemelham em muitos aspectos às feições da tectônica gravitacional mapeadas pela análaise sísmica 2-D e 3-D, sustentando a validade das principais questões dos modelos conceituais de deformação em duas fases, previamente propostos para a Bacia da Foz do Amazonas.
REVISITING SOME OLD UNEXPLAINED EFFECTS IN INDUCTION LOGS WITHIN LAMINATED FORMATIONS WITH THE TRIAXIAL INDUCTION TOOL
Authors: Carvalho Paulo Roberto De , Régis Cícero Roberto Teixeira
Published: May 2017

ABSTRACT. Modern induction triaxial or multicomponent well logging tools provide resistivity anisotropy logs, and estimates of the electrical resistivity of sand laminae in thinly laminated formations. In this paper, coaxial and coplanar vertical logs were modeled in one-dimensional (1D) laminated packages and in their equivalent anisotropic beds, neglecting the presence of the borehole and the invasion...Keywords: well logging, multicomponent induction tool, laminated reservoirs, electrical anisotropy. RESUMO. As atuais ferramentas de perfilagem em poço por indução eletromagnética, denominadas triaxias ou multicomponentes, fornecem perfis de anisotropia elétrica e permitem estimar a resistividade de lâminas de areia em ambientes finamente laminados. Neste artigo, os perfis dos arranjos coaxial e coplanar de bobinas foram simulados em modelos...Palavras-chave: perfilagem de poço, ferramentas multicomponetes, reservatórios laminados, anisotropia elétrica.
Pergeseran Paradigma dalam Disabilitas
Authors: Santoso Meilanny Budiarti , Apsari Nurliana Cipta
Published: May 2017

Pergeseran paradigma dalam memaknai disabilitas perlu terus digulirkan seiring dengan semangat reformasi dan demokratisasi yang bertumpu pada penguatan sendi-sendi dasar hak asasi manusia. Penulisan artikel ini menggunakan studi literatur dan dokumen. Paradigma dalam menangani ataupun memberikan pelayanan bagi penyandang disabilitas mengalami pergeseran, dimulai dengan Traditional Model, yang bersifat kesukarelaan atau charity, kemudian berubah menjadi Individual Model â€“ Medical Model, dengan titik berat bantuan yang diberikan berupa rehabilitasi kepada orang-orang dengan disabilitas. Model kedua ini dirasa tidak cukup menghilangkan hambatan yang dialami oleh orang dengan disabilitas, sehingga para profesional mengembangkan paradigma ketiga, yaitu Social Model, dengan fokus pelayanan lebih ditujukan pada terjadinya perubahan sosial â€“ perubahan  masyarakat. Hingga saat ini, yang digunakan dalam memberikan pelayanan kepada orang dengan disabilitas adalah model Inclusion Model, yaitu inclusive development â€“ inclusive society. Pendekatan inklusif digunakan dengan maksud untuk menghadirkan orang-orang dengan disabilitas dalam kehidupan bermasyarakat, sehingga dirasakan lebih mengakomodir hak asasi manusia orang dengan disabilitas.
Rebeliones coloniales y gobierno de las Indias en la segunda mitad del siglo XVI
Authors: Salinero Gregorio
Published: May 2017

El alcance de los movimientos de desobediencia que emergieron en las Indias durante la segunda mitad del siglo xvi ha sido minimizado. La traición de Martín Cortés, marqués del valle de Oaxaca e hijo legítimo de Hernán Cortés, es un ejemplo emblemático de este mecanismo. Pero es solo un caso entre una larga serie que corre con especial vivacidad desde los años 1540 hasta el final del siglo, y más allá. La pacificación de las Indias existe en las memorias de los visitadores y de los virreyes más que en las calles de las ciudades americanas y en las tierras de Indias. La tierra es precisamente la nueva reivindicación de los españoles de Indias, los nuevos naturales en quien la infinita documentación judicial revela la emergencia de una conciencia política criolla precoz. Las múltiples formas de las desobediencias a la autoridad de la corona de Castilla que constituyen este mecanismo son el objeto de estudio de este texto inspirado del nuevo libro del autor, La trahison de Cortés. Désobéissances, procès politiques et gouvernement.
Sobre América Molina del Villar, Lourdes Márquez Morfín y Claudia Patricia Pardo Hernández (eds.), El miedo a morir. Endemias, epidemias y pandemias en México: análisis de larga duración
Authors: Agostoni Claudia
Published: May 2017

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Sobre Gabriel Rosenzweig (comp.), Alfonso Reyes y sus corresponsales italianos (1918-1959): Guido Mazzoni, Achille Pellizzari, Mario Puccini, Dario Puccini, Elena Croce y Alda Croce
Authors: Ciaramitaro Fernando
Published: May 2017

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Sobre Leticia Reina y Ricardo Pérez Montfort (coords.), Fin de siglos, ¿fin de ciclos?: 1810, 1910, 2010
Authors: Pulido Esteva Diego
Published: May 2017

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Expedición a la Mesa de Metlaltoyuca. El relato del pintor José María Velasco (1865)
Authors: Gudiño Cejudo María Rosa
Published: May 2017

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Sobre Manuel Miño Grijalva, El cacao Guayaquil en Nueva España, 1771-1812 (Política imperial, mercado y consumo)
Authors: Carmagnani Marcello
Published: May 2017

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Sobre Carlos Marichal Salinas, Historia mínima de la deuda externa de Latinoamérica
Authors: Pettinà Vanni
Published: May 2017

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Ser libres bajo el poder del rey. El republicanismo y constitucionalismo de Bartolomé de Las Casas
Authors: Quijano Francisco
Published: May 2017

En el presente artículo se exponen los fundamentos del pensamiento político de Bartolomé de Las Casas a partir del análisis del lenguaje y los argumentos que utilizó al intervenir en las polémicas de su tiempo. Contrariamente a la historiografía que tiende a cuestionar la presencia de tradiciones republicanas o constitucionalistas en el mundo hispánico de la Modernidad Temprana, en el texto se muestra cómo Las Casas, al buscar las condiciones para la coexistencia del poder monárquico y la libertad, recuperó de las fuentes más convencionales de su época presupuestos como el origen popular del poder, la limitación de la autoridad mediante la voluntad del pueblo, la defensa del bien común sobre los intereses particulares y la libertad entendida como no dependencia.
Sobre Arrigo Amadori, Negociando la obediencia. Gestión y reforma de los virreinatos americanos en tiempos del Conde-Duque de Olivares (1621-1643)
Authors: Mazín Óscar
Published: May 2017

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Sobre Ernest Sánchez Santiró, Corte de caja. La Real Hacienda de Nueva España y el primer reformismo fiscal de los Borbones (1720-1755). Alcances y contradicciones
Authors: Celaya Nández Yovana
Published: May 2017

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Effect of Heat and Chemical Treatments on Physico-Chemical and Sensory Properties of Coconut Milk-Orange Beverage
Authors: Okafor D. C. , Ijioma B. C. , Ofoedu C. E. , Nwosu J. C. , Onyeka E. U. , Ihediohanma N. C. , Okafor T. I.
Published: May 2017

The effect of heat and chemical treatments on physico - chemical and sensory properties of coconut milk-orange beverage was studied. Coconut milk (CM) and single strength orange juice (OJ) were prepared from coconut and orange fruits respectively. Orange Juice was used to replace coconut milk at 20, 40 and 60% levels and stabilized with carboxy methylcellulose to produce coconut milk-orange beverage. The beverage samples were in triplicate. A portion was treated with sodium benzoate, the second portion was pasteurized and the last portion was untreated (control). The three sets of samples were then packaged separately in glass bottles and stored under ambient temperature (30Â±20C). Physico-chemical and sensory evaluation were determined before they were stored for two weeks. The untreated fresh beverage samples contained higher amounts of fat, ash and protein but lower amount of crude fiber and carbohydrate. Ambient condition of storage effected increase in moisture but decrease in fat, protein and carbohydrate contents of all samples while ash and crude fiber remained unchanged. Chemically treated samples had the highest (p< 0.5) Total Titratable Acidity value of 1.24% while control had 0.41%. Based on the result findings of this research, 60: 40% combination of Orange Juice and Coconut Milk is recommended. Again, the production of Coconut Milk â€“Orange Juice beverage has proved to be a viable option for addressing food security in Nigeria.
The Juazeiro (Ziziphus Joazeiro Mart.) and the Formation of Concepts and Parameters in Chemical Technology Education
Authors: Santos JosÃ© Carlos Oliveira , Da Costa Ana Paula , AraÃºjo Aline de Lima , Martins Jakeline Santos , De Oliveira Lioran Fagner Bento , Lima Vagne Cunha , De Oliveira RomÃ¡rio Jonas , Dantas Danilo Lima , AraÃºjo Melo Frank Madson
Published: May 2017

Ranging from the northeast of Brazil to the north of Minas Gerais, in the region of the savanna, the popularly known JuÃ¡ or Juazeiro (Ziziphus Joazeiro Mart.) is a plant that has great potential medicinal, scientific and economic that can be used in order to contextualize the chemistry teaching that increasingly is becoming fragmented and full of gaps. The aim of this study is to suggest possible concepts and chemistry discipline of content that can be worked by analyzing the properties and benefits of Ziziphus Joazeiro. For it was made a bibliographic review of the plant's properties and their uses can be different and applications in chemistry classroom. There are many chemical concepts that can be worked through juazeiro. In this paper we present some of them such as polarity of the molecules, hydrophilic and hydrophobic substances, antioxidants, solubility, and others that can be studied. It is of great importance the study of plants of a region so threatened as the savanna. This study was the starting so that teachers start to change their way of teaching and find ways to enable student learning takes place in a positive and satisfactory.
Assessment of Chennaiâ€™s Ambient Air Quality Data using Multivariate Analysis from 2005 to 2015
Authors: Karunanithi Srinivasan , Kabbilawsh Thirumalini Perumal,
Published: May 2017

This paper deals with spatial classification and their respective sources of pollutants within the selected TNPCB and CPCB monitoring station based on a Eleven year Database (2005 â€“2015). HACA grouped the eight monitoring stations into three different clusters, bases on concentration of air pollutants. HACA results also speculate that a methodological difference lies in the stations operated by CPCB and TNPCB. PCA was performed individually on each cluster to determine the source of pollutant. PCA analysis showed production of wax, fuel, petrochemical feedstock and lube by petrochemical and manufacturing industries, soil dust emission due to construction activities and vehicular movement form the foundation of the pollution base for the first cluster, whereas abundant increase in vehicular fumes which had resulted from drastic increase in personal vehicle trips and decline of public ridership in buses and trains leading to detour was the source for pollutant concentration in second cluster. Illegal commercialization of residential plots, construction of restaurants and complexes, heavy traffic movement explains the result of the third cluster.
Making a Low Risk Kampong to Urban Fire
Authors: Pamungkas Adjie , Rahmawati Dian , Larasati Kesumaning Dyah , Rahadyan Gusti Aditya , Dito Abdiel Hardwin
Published: May 2017

Urban fire in Surabaya has made 36 fatalities with IDR 97.9 Billion losses in the last five years since 2015. Nyamplungan, one of the neighborhood units in Ampel Precinct, has been dominated with medium level of social and physical vulnerabilities with a low level of capacity. Those risk characteristics in Nyamplungan and its status as cultural-heritage site of Surabaya make that the risk management based on communities in the area is an urgent step to enhance community resilient. These serial participatory action researches have increased community knowledge on risk management, identified historical fire incidents, formed a community group in responding to potential fire hazards, valued the risk level with medium level domination, identified emergency infrastructures, agreed on three main scenarios of future disaster scale, designed action plans from 8 key stakeholders in emergency responses and made six alternatives on evacuation routes.Â
Performances of Symmetric and Asymmetric T-slot Microstrip Antennas for Bluetooth Communication
Authors: Chandra Saurabh , Kumar Pranaw , Roy Jibendu Sekhar
Published: May 2017

Bluetooth is a short distance unlicensed wireless communication technology operating at 2.4 GHz band and primarily used for data transfer between portable devices. In this paper, small size microstrip patch antennas, loaded by symmetric and asymmetric T-shaped slots are designed and a comparative study of their performance at Bluetooth frequency band is presented. High frequency structure simulator (HFSS) software is used for antenna simulation. Improved bandwidth, uniform radiation pattern and good gain of the antenna are achieved using asymmetric T-slot microstrip antenna compared to symmetric T-slot microstrip antenna. The dimension of asymmetric T-slot microstrip antenna is 75% less than the symmetric T-slot microstrip antenna. Performance of the antennas, through parametric studies, related to the dimensions of the symmetric and asymmetric T-slots, is also presented.Â Â
Faculty Input for Future Allocation of Scarce Educational Technology Resources
Authors: Johnson Linda
Published: May 2017

Faculty are major stakeholders in the California community college (CCC) systemâ€™s ability to meet three primary mission objectives: increase student access, prepare students for transfer, and remain competitive. Educational technology (ET) can play a vital role in keeping the CCCs competitive, and modern learner-centric models rely heavily on faculty using ET, but ET is expensive. With 113 CCCs operating in an era of constrained budgets, the efficient allocation of scarce ET resources remains a challenge for the CCC system. Faculty input regarding their use of educational technology (ET) is invaluable, but no published empirical research explores the present and future use of ET by the CCC faculty. Therefore, the purpose of this study was to survey CCC faculty to determine their present ET hardware and software use, and their anticipated ET use five years in the future. Survey data from 655 active CCC faculty were analyzed using t-tests at the p < .05 threshold for statistical significance. Cohenâ€™s D was used to describe the magnitude of anticipated change from current to future ET use. Results demonstrate that CCC faculty anticipate significant increases in their use of ET hardware and software over the next five years. Results also show that 42% of faculty had never been asked about their use of ET by an influencer, indicating that faculty are underutilized stakeholders in ET planning. Combined, these findings can be utilized by CCC administrative decision makers towards meeting their mission objectives by the efficient allocation of scarce ET resources.
After IT Outsourcing: An Exploratory Research of an Agency of Taiwan from the Perspectives of IT Personnelâ€™s Ability and IT Budget Allocation _
Authors: Chou Huey-Wen , Yen Chi-Lung
Published: May 2017

Building an Information System is essential for achieving the goal of implementing Electronic Government (E-Government). Â Outsourcing has become the strategy for Taiwan government in terms of building the Information Systems. Â Sixty percent of the Information Technology (IT) budget for Taiwan government was spent on maintaining and operating the information systems built by the contracting companies in 2014. Â  The ability of IT personnel and IT budget allocation for a government agency may have an impact on the operation of the information system. Â However, there is limited literature about it. Â This exploratory research used in-person observation and In-depth interviews to study an information system inside X agency of Taiwan government. Â This study found that since the IT personnel in this agency did not involve in the development of the system, even though the IT personnel in this agency had sufficient technical skills, the lack of knowledge of technical details of the system weakened their ability to operate and maintain the system. Â This study also found the limited budget made operation cost a priority over system upgrades. Â The insufficiency of technical knowledge of system not only impair the normal operation of system, it also made adequate budgeting for IT department difficult. Â This study provides practical solution and recommendation for future researches.
The Social Coping Experiences of a Female Child with Arthrogryposis Multitplex Congenita Shared by her Parents
Authors: Abed Mohaned
Published: May 2017

Arthrogryposis Multiplex Congenita, commonly referred to as AMC, is a disorder recognised by multiple contractures of the joints. The symptoms associated with the disorder span across various levels of severity. Regardless of the physical problems, however, intelligence remains undisturbed.The aim of this paper is centred on investigating the social coping experiences of a child living with this condition, adopting a qualitative approach to the research. A case study design was adopted for the research, with the theoretical framework applied known as Phenomenology. One sample was used for the data collection, notably a child diagnosed with Arthrogryposis, with her coping experiences shared by her parents. When examining the data, thematic analysis was applied. This study has significance in the fact it seeks to develop an understanding of children living with this condition, as well as for the disabled child population as a whole. The key issues seen to arise from this study include the role of social relationships, the role of the parent in socialisation, and the perceptions of others concerning AMC.
A Hybrid Modified Approach for Solving Fuzzy Differential Equations
Authors: Ahmad Alauldeen N. , Nema Basma A.
Published: May 2017

In this paper, a hybrid method is presented by combining Laplace transformation and variational iteration method for solving fuzzy differential equations with fuzzy initial and boundaries values. A defuzzification technique had been implemented to convert the fuzzy parameters into crisp values by building an extended ranking method. Then the method is implemented on the new problem in which two approaches has been built according to the formula ofÂ  Lagrange multiplier obtaining the lower, upper and center solutions.
A Statistical Evaluation and Modeling on the Social Transitivity Behavior
Authors: Yang Chiao Yi , Phoa Frederick Kin Hing , Chiang Yen-Sheng
Published: May 2017

Transitivity is one of the most important mechanisms to form a social network in a human society, but it remains unclear how such behavior is quantified and affected by some key factors, including the social environment and the participants' characters. This study investigates the sharing behavior based on the notion of transitivity and an experiment is conducted on a variety of populations from kindergarteners to teenagers. The key effects that have high impacts to the sharing behavior are identified from the statistical analysis of the experimental results. A mathematical model is built for the experimental results and its performance compared with other models is also illustrated.