bluuebunny/crossref_metadata_2025_split huggingface dataset:
Aprendizaje de la Matemática una condición necesaria para el aprendizaje de la física inicial a nivel superior
Authors: Jardey Suárez Oscar 
Published: March 2016

<p>Este documento es consecuencia del avance de investigación que pretende estudiar, una afirmación aparentemente clara, el <em>“… aprendizaje de la matemática como una condición necesaria, pero no suficiente, para el aprendizaje de la física</em>…”. La metodología de la fase inicial de la investigación es cualitativa, basada en una revisión documental y se enfoca en establecer los avances y dificultades en el estudio de la comprensión de la noción de variable en la educación matemática y su uso e implicaciones en el contexto de la física. Los resultados señalan la importancia de lograr una alta comprensión de la noción de variable manifiesta en un razonamiento algebraico necesario para el aprendizaje de la física. Ésta comprensión se evidencia en la identificación de sus usos así como su diferenciación en los diversos contextos; en la educación matemática se identifican las variables como incógnita, número generalizado o en una relación funcional; en el razonamiento físico, además de lo expuesto, las letras (que indican las variables) significan conceptos con un dominio específico que pueden diferir de las entidades abstractas de la matemática, al punto que en algún momento una operación sobre un objeto matemático no tiene sentido en el contexto de la realidad física estudiada, así la tenga en la matemática. Entre las reflexiones esta la “<em>homografía física</em>”, letras idénticas que tienen un significado diferente, como un elemento que complejiza la comprensión de la noción de variable en su paso del contexto matemático al físico, así como la necesidad de lograr una comprensión aceptable de la noción de variable, en particular de los objetos matemáticos función y afín y parabólica, para el inicio del estudio de la física en la educación superior. </p>
Reconstructing the Normative Foundations of Socialism
Authors: Noonan Jeff 
Published: March 2016

<p>In this paper I argue that underlying the different historical permutations of socialism is the normative idea of the life-ground of value. I attempt to reconstruct the normative basis of socialism on the basis of this life-ground. The aim is to make explicit the generalizable value of socialism as in everyone's human life-interests. In the context of a growing crisis of life-conditions across the globe, the hope is to revive political interest in a broad based socialist alternative to an increasingly life-blind global market system. </p>
Making Change From Below
Authors: Smith Dorothy 
Published: March 2016

<p>In this paper I've tried to spell out what I think we're confronting in attempting to make change in the context of global capitalism. I've used the notion of making change from below because the kind of government organization that made taking it over appear practicable has largely disappeared in a fragmentation of the state at many levels both within Canada and at international levels. Moreover the terrain of struggle has shifted from the directly physical to the contemporary text-mediated relations that pervade our societies. Right now we are also going through a rapid reorganization of governance replacing bureaucratic and professional organization with new managerial forms that subordinate both government and public institutions to the service of global capital. We can, however, find models of making change from below that have been effective. I look first to the Women's Movement, proposing that in addition to the specifics of its achievements, women in Canada are recognized and recognize ourselves as political subjects and agents. I then introduce more current examples of change initiated by non-governmental organizations, including unions. While specific objectives may be achieved, in the longer run these forms of organizing to make change are also important in building people's experience of acting and organizing, in extending connections among activists, and in grounding people's capacities to experience themselves as political subjects. </p>
Evaluación de la demanda energética de edificios no residenciales en Escocia = Energy demand benchmarking of non-domestic buildings in Scotland
Authors: Chetboula Julien , Garnier Céline , Bros-Williamson Julio 
Published: March 2016

ResumenCon los años el rendimiento energético del edificio se ha convertido en una preocupación predominante para los propietarios y administradores de bienes raíces. La atención se centra generalmente en edificios de viviendas, pero en los últimos veinte años un interés en edificios no residenciales ha surgido en el Reino Unido. Los puntos de referencia general se pueden encontrar a escala del Reino Unido, aunque a menudo está restringido a Inglaterra y Gales. Este documento tiene como objetivo proporcionar puntos de referencia para el parque inmobiliario no doméstico escocés como parte del Ayuntamiento de Edimburgo. En esta investigación, la muestra seleccionada incluye datos de energía y las emisiones de carbono calculadas de 199 edificios.Los parámetros decisivos fueron la intensidad de uso de la energía (kWh/m2) y el uso y la edad de los edificios. Esto permitió la creación de seis tipos de edificios, aunque siguiendo patrones de ocupación se dividió en cuatro categorías desde el s. XVI hasta el s. XXI. Los principales resultados revelan el predominio de un clúster de edificios educativos en términos de superficie (72%), el número de edificios (70%), las emisiones de carbono (68% de los cerca de 42.000 toneladas de CO2) y el consumo de energía (61% de la 38,4 MWh de electricidad consumida, y el 73% del 117,4 MWh de gas natural que se consume). Entre estos niveles de consumo destacan el potencial de ahorro de energía para las escuelas: 186 kWh / m2 / año en promedio, en comparación con la media europea de 100 kWh / m2 / año de energía térmica de uso final. AbstractOver the years building energy performance has become a predominant concern for owners and real estate managers. The focus is usually on residential buildings but in the last twenty years an interest in non-domestic buildings has emerged in the UK. Benchmarks can generally be found at UK scale, although often restricted to England and Wales. This paper aims to provide benchmarks for the Scottish non-domestic building stock as part of the City of Edinburgh Council estate. In this research, the selected sample includes energy data and calculated carbon emissions of 199 buildings. The deciding parameters were the energy use intensity (kWh/m2) and the use and age of buildings. The last two allowed the creation of six clusters in which to group buildings of similar occupancy patterns in four age categories from the 16th to the 21st century. The main findings reveal the predominance of an educational buildings cluster in terms of floor area (72%), number of buildings (70%), carbon emissions (68% of about 42,000 tons of CO2), and energy consumption (61% of the 38.4 MWh of electricity consumed, and 73% of the 117.4 MWh of natural gas consumed). These levels of consumption highlight the energy saving potential for schools: 186 kWh/m2/year on average, in comparison with the European average of 100 kWh/m2/year for thermal end-use energy.
Influencia de la acumulacion de las flechas de servicio en forjados de hormigon con cerramientos rigidos = Influence of accumulation of service concrete truss deformation effect of rigid enclosure.
Authors: Gila Francisco , Mas Guindal Antonio José 
Published: March 2016

ResumenEl objetivo de este trabajo es verificar la relación directa que existe entre las flechas activas que se generan en las plantas superiores de un edificio de viviendas, con los elementos que están en contacto con los forjados de la estructura, es decir, con los tabiques y cerramientos. El procedimiento aplicado se ha basado en el estudio de la aplicación correcta de las cargas de elementos de separación (muros y tabiques), llevadas a cabo en, por modelos de estructuras de pórticos de hormigón armado en edificios de viviendas, teniendo todas ellas en común la geometría de planta y siendo variable el número de plantas que la constituyen en altura. Las conclusiones obtenidas, después de haber analizado un edificio tipo de 6 plantas, de trama regular, indican que en el forjado de planta baja podría llegar a incrementarse el valor de la flecha activa hasta un 234,93%. En un edificio de 9 plantas el forjado de planta baja podría llegar a incrementar su flecha activa hasta un 241,09%, para las mismas condiciones de luz y carga. En el caso de un edificio de 12 plantas se llega a la conclusión que en el forjado de planta baja puede llegar a incrementar el valor de la flecha activa hasta un 290.07%. AbstractThe objective of this work is to test the direct relationship between active arrows that are generated in the upper floors of a residential building, with the elements that are in contact with the floors of the structure, is say, with the partitions. The methodology is based on the study of a series of test tube, made these for models of buildings, are all having in common the floor geometry being variable and the number of floors that are at height. The conclusions that have been reached after analyzing a 6 plants concludes that the floor slab can get to increase the value of the active deflection up to 234.93 %. In a 9-storey building the floor slab could increase their active arrow up to 241.09% for the same lighting conditions and load. In the case of a 12-storey building is concluded in the floor slab can actually increase the value of the active deflection up to 290.07%.
Rekomendasi Perancangan Arsitektur Enterprise Pascamerger (Studi kasus: Universitas Telkom)
Authors: Sardi Indra Lukmana , Surendro Kridanto 
Published: March 2016

Merger merupakan kombinasi dari dua atau lebih perusahaan menjadi sebuah perusahaan tunggal yang mencakup akuisi serta bentuk lain dari penggabungan. Proses merger memiliki banyak tantangan pada tahap integrasi pascamerger (Trautwein, 1990). Proses integrasi dapat memicu berbagai masalah dan perubahan. Integrasi yang tidak baik dapat menyebabkan kegagalan pada proses merger secara keseluruhan (Shrivastava, 1986). Penelitian ini mencoba melakukan analisis dan merumuskan rekomendasi perancangan Arsitektur enterprise, yang dapat menanggulangi masalah-masalah yang akan muncul pada tahap integrasi pascaproses merger. Dengan adanya perancangan arsitektur enterprise yang baik, diharapkan terwujudnya keselarasan antara teknologi informasi dan kebutuhan bisnis. Dengan menggunakan pendekatan tata kelola TI dan TOGAF ADM, maka dirancang tahapan-tahapan Arsiterktur enterprise yang terdiri dari Fase A Arsitektur Visi, Fase B Arsitektur Bisnis, Fase C Arsitektur Sistem Informasi, Fase D Arsitektur Teknologi, dan Fase E Peluang dan solusi. Akhirnya, penelitian ini dapat menghasilkan langkah dan hal penting yang perlu diperhatikan pascaproses merger pada sebuah perguruan tinggi.
STUDI HISTOKIMIA LEKTIN PADA SEL-SEL SPERMATOGENIK TESTIS MUNCAK (Muntiacus muntjak muntjak) (Lectin Histochemical Study of Testicular Spermatogenic Cells in Muntjak (Muntiacus muntjak muntjak))
Authors: Wahyuni Sri , Agungpriyono Srihadi , Adnyane I. Ketut Mudite , Hamny Hamny , Jalaluddin Muhammad , Gholib Gholib , Akmal Muslim , Adam Mulyadi , Aliza Dwinna , Siregar Tongku Nizwan 
Published: March 2016

The objective of this study was to identify the type of specific glycoconjugates and its distribution in testicular spermatogenic cells in muntjak (Muntiacus muntjak muntjak) based on lectins histochemistry. An adult male muntjak aged 4-5 years old in hard antler period was used in this study. Testicular tissue was fixed in Bouin solution and processed histologically. Histochemistry method was performed using six types biotinylated lectins such as peanut agglutinin (PNA), soybean agglutinin (SBA), wheat germ agglutinin (WGA), ricinus communis agglutinin (RCA), concanavalin A (Con A), and ulex europaeus agglutinin I (UEA I) with 20 µg/ml of concentration for PNA lectins and 15µg/ml for other type of lectins. The results showed that glycoconjugates were detected by all type of lectins except UEA I in testicular spermatogenic cells with variation in distribution pattern and also the intensity of lectins binding. Glycoconjugates β-galactose, β-glucose, mannose, Nacetylgalactosamine, N-acetylglucosamine and sialic acid were stained intensely by lectins in golgy-cap phase and acrosomal phase of spermatids. Glycoconjugate N-acetylgalactosamine was the sugar residues which distributed abundantly that marked by positive reaction with PNA, SBA, and RCA lectins. In conclusion, glycoconjugates are detected in testicular spermatids cells of muntjak indicated that glycoconjugates have an important role in spermatogenesis particularly in spermiogenesis. Key words: glycoconjugates, lectins, spermatid, spermatozoa, muntjak
Data Integration Enables Quicker Decisions
Authors: Betz Jack 
Published: March 2016

After acquiring Berry Petroleum in 2013, Linn Energy became the operator of heavy oil fields in California’s San Joaquin Valley.
David Deaton, chief advisor for Halliburton Landmark’s North American production services, discussed challenges the company faced in optimizing the field during a technical presentation (SPE 173404) at the recent SPE Digital Energy Conference and Exhibition in The Woodlands, Texas.
“Once Linn took over [Berry], production management and surveillance issues escalated. There were a lot more wells, more complex wells, and a diverse range of asset types,” said Deaton.
Because the field required the use of steam injection, Linn had to conduct more monitoring in order to maintain maximum production efficiency.
Berry had begun a production management project, called the Reservoir Surveillance Initiative, in 2012. When Linn acquired the company, it continued the initiative.
Logistical problems that Linn sought to address were coping with the high volume of data, servicing multiple wells, and enabling engineers to make better use of their time, instead of having it consumed by data manipulation.
Using Halliburton Landmark’s DecisionSpace Platform (DSP), Linn pushed forward with the initiative and integrated disparate well and artificial lift data into one source. This helped engineers make quicker decisions and improved operations.
Data Integration
A major aspect of improving operations was visualization. Before the initiative, the data were stored in various locations without a way to access them easily for purposes such as production optimization and monitoring. Daily report data were only accessible as discrete files on a shared hard drive.
Using the platform, collaboration rooms were created with large screens, where groups of field engineers were able to see a detailed map-based display. Data once stored in spreadsheets and PDF files, which required significant manipulation, were represented by dashboards, graphs, and color coding.
The platform also enables streamlined communication with personnel working in the field. When an event occurs, it can send text and email messages alerting engineers to problems immediately after they are detected.
“The idea was to get the right data to the right people at the right time to help them make decisions,” said Deaton.
An area in which visualization gave Linn an edge was detecting and correcting for subsidence, a potentially destructive downward geological shifting.
An Operator’s Perspective on Benefits and Challenges of In-Well Monitoring
Authors: Wilson Adam 
Published: March 2016

This article, written by Special Publications Editor Adam Wilson, contains highlights of paper OTC 25085, “In-Well Monitoring for Deepwater Wells—Operator’s View,” by Sandeep Patni, SPE, Shell, and Dennis Dria, SPE, Myden Energy Consulting, prepared for the 2014 Offshore Technology Conference, Houston, 5–8 May. The paper has not been peer reviewed.
In-well monitoring can improve the quality of surveillance in subsea wells, enabling low-cost, nonintrusive well and reservoir surveillance, provided that the industry overcomes the technical challenges and gaps and improves the reliability of the system. However, significant challenges remain in the selection, qualification, and deployment of these technologies in deepwater subsea wells. This paper provides an operator’s viewpoint of in-well monitoring, covering some of the key challenges.
Defining Monitoring-System Value
The interest in downhole monitoring has been well-documented, and much effort and money have been spent to obtain such information as needed to evaluate reservoir potential, optimize operations and production, and manage cost and risk. The primary measurement historically has been single-point downhole pressure and temperature. The value of additional measurements, such as production logging, downhole sampling, and compaction logging, is high, but they require well intervention. Permanently installed monitoring systems, distributed multipoint sensors in particular, provide unique real-time, on-demand information. General methods using coupled temperature-/pressure-transient interpretations offer unique information not previously attainable if the sensing systems are available, be they electrical or optical. Useful measurements cover a broad range of applications and include the following:
Gas lift monitoring/optimization
Electrical-submersible-pump optimization
Production/inflow monitoring
Injection profiling
Water management
Well- and completion-integrity monitoring
Compaction monitoring
Fracture-height monitoring
Real-time stimulation monitoring
Sand detection
Chemical-Reaction Mechanisms That Govern Oxidation Rates During In-Situ Combustion and High-Pressure Air Injection
Authors: Freitag N. P. 
Published: March 2016

SummaryThe lack of an accurate reaction model for petroleum-oxidation rates is a serious hindrance to the simulation of oil-recovery processes that involve air injection. However, the chemical literature on hydrocarbon oxidation contains many examples of possible reaction mechanisms that could serve as guides. These mechanisms were screened to identify generally accepted reaction paths that could help reveal how oxidation occurs in petroleum reservoirs.It was found that there are at least eight groups of fundamental reactions that can seriously affect oxidation rates of crude oils or their pyrolysis products. These eight reactions are as follows: two that lead to hydroperoxide formation; “branching” by hydroperoxides; two reactions governing the negative temperature coefficient (NTC) region; oxidation inhibition; at least one rate-controlling reaction at very high temperatures; and the combustion of coke that is produced by pyrolysis. Each of these groups exerts an influence within a separate, identifiable range of conditions. These reactions, and the conditions under which they become important, are outlined in this paper.Various oxidation behaviors that were reported for both light and heavy crude oils were then compared and aligned with the eight identified reactions. The result was a framework for selecting pseudoreactions that can facilitate the prediction of the oxidation kinetics under a wide range of oilfield conditions. Some of these pseudoreactions involve the direct representation of free radicals or other chemical intermediates, which is a departure from conventional practice for in-situ-combustion simulation.The new reaction framework is expected to serve as a reliable guide to the construction of predictive reaction models and, consequently, improved simulation of both in-situ-combustion and high-pressure-air-injection (HPAI) processes.
Hipersensibilidade aos β-lactâmicos e outros antibióticos. Bases biológicas
Authors: Gandolfo Maria Isabela Lopes , Monteiro Naara Gabriela , Januzzi Marcella Santos , Bacelar Ana Carolina Zucon , Rodrigues Marielise Mundin Abrão , Okamoto Ana Cláudia , Schweitzer Christiane Marie , Gaetti-Jardim Júnior Elerson 
Published: March 2016

Este estudo teve como objetivo avaliar a ocorrência de alergias aos antibióticos e antimicrobianos comumente utilizados em medicina e odontologia, discutindo os mecanismos envolvidos nas reações de hipersensibilidade. Pela literatura verificou-se que a maioria das alergias foi associada com o uso frequente de tais compostos e depende de medicamentos haptenização. A hipersensibilidade pode ser classificada em reacções immediadas e aceleradas, associadas com respostas humorais, ou mediadas por linfócitos T que reconhecem o antigénio apresentado por células apresentadoras de antigenos e liberam citocinas, resultando no recrutamento de diferentes tipos celulare, desencadeando a inflamação do tecido. Além disso, as declarações de 386 pacientes odontológicos foram analisadas e ocorrência de alergias aos antibióticos foram relatadas por 6,2% dos pacientes. As reacções às penicilinas foram predominantes (4,7%), seguidas da sulfanilamida (1,0%) e das cefalosporinas (0,5%). A sintomatologia predominante foi essencialmente cutânea. Também foram analisadas as consequências, diagnóstico e prevenção das alergias aos antimicrobianos. Este estudo concluiu que os β-lactâmicos foram as drogas mais alergênicas e a grande maioria das reações imunes foram desencadeadas contra eles. O tratamento de dessensibilização deve ser considerado a última abordagem clínica devido aos seus riscos para os pacientes.<p><strong>Descritores:</strong><strong> </strong>Hipersensibilidade a Drogas; Antibacterianos; Alergia e Imunologia.</p>
Bacillus Spp. Amylase: Production, Isolation, Characterisation and Its Application
Authors: Sachdev Shivani , Ojha Sanjay Kumar , Mishra Snehasish 
Published: March 2016

Amylase is one of the leading enzymes used in industry from decades. The preliminary function of this enzyme is the hydrolysis of the starch molecule into glucose units and oligosaccharides. Amylases have spectacular application in broad spectrum of industries such as food, detergent, pharmaceutical and fermentation industries. Among different type of amylases α- amylase is in utmost demand because of its striking features. This particular enzyme is a good substitute over the chemicals catalyst used in industries. α- amylases can be acquired from different sources such as microorganism, animals and plants. Microorganisms are the major source of production of amylase because of the ease of availability, manipulation and operation. The starch converting enzymes is basically generated using submerged fermentation. Some of the prominent characteristics of amylase are its mode of action, substrate specificity and operating condition (temperature and pH). Amylases from different bacterial sources contribute differently to the particular trait of the enzyme. Bacillus amylases have been studied and applied so far because of their robustness in nature and easy accessible pure form of it. Thus this makes it more specific and fit for distinct application in the industry. The purpose of this manuscript was the comparative analysis of the physical and chemical features of α amylases from Bacillus species. It also focuses on the unique characteristics of this enzyme and their industrial applications.Int J Appl Sci Biotechnol, Vol 4(1): 3-14
Three-dimensional surface measurement for the quantification of mechanical properties of laser-sintered parts
Authors: Grimm Tobias , Witt Gerd , Wiora Georg 
Published: March 2016

AbstractA good correlation (ρ = −0.912) is found between three dimensional surface features and mechanical properties of laser-sintered parts. This study identifies correlating surface parameters and features out of the wide range of existing evaluation methods resulting from the new possibilities of a three dimensional surface measurement in contrast to a conventional tactile profilometry. Therefore, surface analyses were performed using a confocal microscope and tensile tests according to ISO 527-1 were conducted. Especially the motifs dale and volume of islands analyses show a good correlation concerning the tensile strength, the Young´s modulus and the elongation at break. The differences with regard to each feature and their influence on the mechanical properties are discussed.