bluuebunny/crossref_metadata_2025 huggingface dataset:
El complejo Billingehus-Skövde – Suecia
Authors: Heineman Hans Erland
Published: August 2014

El Billingehus se realizó con la idea de facilitar el contacto de la gente del pueblo con las actividades culturales y deportivas desarrolladas en plena naturaleza. Con este fin se eligió una zona de gran arbolado, enclavada entre montañas y que cuenta asimismo con la proximidad de un pequeño lago, que daría la posibilidad de practicar el deporte de la pesca.
En este lugar se construyó un complejo, que alberga en su núcleo central una serie de cafeterias, restaurantes, salas de tipo social, un pequeño hotel y hasta una iglesia particular, y situando en sus inmediaciones varias piscinas, pistas polideportivas y la zona de aparcamientos.
Se aprovechó una de las montañas cercanas para la construcción de pistas de esquí, servidas por dos elevadores.
Primer congreso nacional de la calidad (Febrero de 1972). Panorama español actual del control de calidad en la construcción
Authors: García Meseguer A.
Published: August 2014

Se describe el desarrollo de la ponencia presentada por el autor en el I Congreso Nacional de la Calidad, celebrado en Madrid el pasado mes de febrero, desglosando el estudio de la calidad en el encargo, en el proyecto, en los materiales simples, en los elaborados a pie de obra, en los procesos de ejecución y en la obra terminada, incluyendo unos cuadros que recogen las ideas principales expuestas. El autor se muestra optimista con respecto al futuro, ya que los medios constructivos del país y, sobre todo, los Organismos rectores, han tomado conciencia plena del problema y de las directrices a seguir.
En números sucesivos de INFORMES DE LA CONSTRUCCIÓN aparecerán la ponencia del Dr. Arquitecto D. Javier Lahuerta Vargas: «El Arquitecto ante el Control de Calidad»; y la del Dr. Ingeniero Industrial D. Pedro Mendizábal: «El Control de la Calidad en el Hormigón».
Dos iglesias de Pierre Pinsard, arquitecto Francia
Authors: Pinsard Pierre
Published: August 2014

Centro Parroquial de San Pedro de Chanel, en Bourg-en-Bresse
Esta situado en la zona moderna y se ha distribuido en tres plantas:
— Sótano: con garaje público.
— Planta noble: con nave capaz para 639 plazas, capilla, mortuorio, sacristía, presbiterio y oficinas; además de la plaza, el jardin, aparcamiento y campanil.
— Planta alta: con salas de catecismo, tribuna, oficinas y estancias anejas al presbiterio.
Construcción fundamental de hormigón visto con pilares metálicos.
Centro Parroquial de San Juan Bautista de La Salle, en Ruán
Está situado en la orilla izquierda del Sena. Consta de una sola planta, con nave para 600 fieles, capilla, salas de catecismo, dos sacristías, mortuorio, presbiterio, coro y jardines.
Construcción a base de hormigón, fábrica de ladrillo a cara vista y cubierta metálica revestida de madera el interior.
Johnson-Wax Mijdrecht (Holanda)
Authors: Maaskant van Dommelen Kroos Arquitectos
Published: August 2014

Situada en la zona industrial de Mijdrecht, óptima por su emplazamiento, esta fábrica de la casa Johnson es un edificio original por su especial diseño y por su ubicación sobre un estanque, que actúa de elemento reflector.
El conjunto de oficinas está dividido en tres partes, teniendo en cuenta que, además, ha de funcionar como centro de ventas internacional. Asimismo, su especial configuración está perfectamente adaptada a un futuro plan de ampliación de las instalaciones, condicionado a la construcción de una nueva carretera adyacente.
La mansion Studebaker en Seattle – EE.UU.
Authors: Lovett Wendell H.
Published: August 2014

La casa Lauren Studebaker ha sido diseñada para una familia de cinco personas. Se trata de un edificio aislado, situado en un ambiente natural. Consta de dos cuerpos de tres alturas, unidos por un tercero circular en el que se aloja la escalera.
La entrada se efectúa por la planta intermedia, dando paso, a través de un distribuidor, a los locales de esparcimiento, comedor, cocina y garaje.
En la planta inferior se distribuyen los dormitorios y cuartos de juego de niños, y en la superior, los dormitorios de adultos y un pequeño estudio.
Se utilizó madera de cedro para el revestimiento de techos y muros al exterior. Las paredes del interior se decoraron con diferentes colores sobre enlucido blanco.
Los viaductos de acceso al puente de Martigues – Francia
Authors: Perzo R.
Published: August 2014

Se describen los accesos a un gran puente metálico, de 300 m de longitud. Dichos accesos están constituidos por dos viaductos cuyos tableros son vigas continuas, de hormigón pretensado, de 260 y 315 m de longitud; las luces en ambos viaductos son de 45 m.
La sección transversal es una losa con dos nervios de 3 m de canto; no existen riostras ni en los vanos ni sobre los apoyos.
Las dos estructuras se han construido por tramos de 45 m sobre una cimbra autolanzable, que ha permitido muy buenos rendimientos.
Escuela para Hidroeléctrica Española, S. A., en San Agustín de Guadalix, Madrid (España)
Authors: De Oriol e Ybarra M. , Lapuente Casamayor G.
Published: August 2014

El edificio está emplazado en San Agustín de Guadalix, junte a la carretera general N-I.
Se compone de cuatro partes bien diferenciadas: clases teóricas, residencia y restaurante, clases prácticas y zona deportiva, ligadas por una calle cubierta, para uso de peatones.
La construcción se ha adaptado cuidadosamente a la topografía del solar, respetando, tanto en el aspecto formal como en el uso de los materiales, la fisonomía y carácter de la zona, e imprimiéndole, asimismo, la sobriedad propia de una obra eminentemente social.
Estadio polideportivo en Filadelfia – (EE.UU.)
Authors: Hugh Stubbins y Asociados Arquitectos
Published: August 2014

Este original estadio, incluso en su forma, exigía la condición de poder adaptar 15.000 asientos adicionales para rugby, que tenían que estar ocultos durante los partidos de béisbol, circunstancia que se aprovechaba para otros fines.
Al proyectar su cubierta se estudiaron, muy a fondo, tres alternativas:
— Cubierta fija;
— Cubierta con una sección interior transportable;
— Cubierta con una sección interior corredera.
Goza de buenas comunicaciones, accesos y todo tipo de instalaciones tanto para jugadores y espectadores como para el personal especializado: prensa, TV, etc.
Su estructura es mixta, siendo de hormigón armado desde los cimientos hasta la tercera planta y de ésta a la cubierta, de acero. Esta fue la solución más económica entre las estudiadas.
Dos obras de Friedrich F. Haindl, Alemania Federal
Authors: Editorial Equipo
Published: August 2014

El asilo de Wasserburg.
Se trata de una construcción de ladrillo, con revestimiento de piezas prefabricadas de hormigón; tiene planta rectangular y está compuesto por: sótano, planta baja y seis superiores.
En el sótano se han dispuesto: la cocina con sus dependencias, una lavandería y los locales de almacenamiento, servicios e instalaciones.
La entrada se realiza por la planta baja, atravesando una cancela que comunica con el espacioso salón interior. Esta planta aloja: el comedor, la capilla, la biblioteca y los locales administrativos.
La planta primera se dedicó a las dependencias del personal y a las habitaciones de las hermanas, incluyendo un refectorio y la vivienda del portero. Las cuatro plantas superiores contienen el tota! de las habitaciones de los residentes, con un salón común en cada planta. En la última se ha montado el centro asistencial, con habitaciones de distintas capacidades. El conjunto se completa con un garaje y un jardin.
La residencia de ancianos de Berching.
Está situada en un antiguo convento de dos plantas, añadiéndole un nuevo edificio, que consta de: sótano, planta baja y dos o tres plantas superiores. Se une al anterior mediante un pasillo acristalado.
En el primer edificio se dispusieron: las habitaciones del personal, hermanas y enfermeras vivienda para el sacerdote, cocina, comedor, refectorio, sala de estar, administración, aseos y servicios, almacenes, provisiones y talleres
En la nueva construcción se distribuyen: las habitaciones de los ancianos, cuarto de calderas, tanques de aceite para calefacción, almacenes, talleres, comedor y vestíbulo junto al pasillo de enlace, cocina general, cocinas pequeñas en cada planta, comedor del personal lavandería, aseos, cuartos de estar y terraza de uso común, y el centro asistencial de 22 camas
Cada dormitorio va dotado de lavabo y un armario empotrado, disponiendo, además, las habitaciones de los ancianos de una terraza individual.
La nueva construcción se ha realizado en su totalidad con hormigón, armonizando con las grandes superficies acristaladas de pasillos, locales comunes y dormitorios.
El embalse Backwater - Escocia - Gran Bretaña
Authors: Babtie - Shaw & Morton Ingenieros , Baxter - Clark & Paul Arquitectos Consultores
Published: August 2014

El valle de Backwater es la confluencia de una zona montañosa, conocida con el nombre de Grampian Highlands. El artículo describe los ensayos de suelo, problemas que hubo que resolver, y construcción de una presa de tierra de 550 m de longitud y 43 m de altura, túnel de derivación, torre de válvulas, conducciones tubulares, cuartos de control y de instrumentos y obras auxiliares.
Instituto de productos lácteos y derivados grasos del P.J.C. Arganda – España
Authors: Ruiz Duerto A. , Fernández Sánchez R. , Alamán Simón Aurelio , Ferreres T.
Published: August 2014

Se describen en este artículo:
a) El CLUB-COMEDOR, compuesto de: local para distintos usos, cocina, instalación de acondicionami¿nto de aire, semisótano, almacén, porche cubierto y campo de tenis en la cubierta, con acceso exterior. Estructura metálica, forjados cerámicos y cerramientos de ladrillo silicocalcáreo.
b) El EDIFICIO DE LABORATORIOS para el Instituto de Productos Lácteos y Derivados Grasos, consta de semisótano: para instalaciones, taller, vestuarios, almacén y otros servicios; planta primera: de dirección, administración, aula, juntas, biblioteca y laboratorio; dos plantas de laboratorios. La estructura es metálica en vigas y pilares, constituyendo una red principal tridimensional —en vei-tical y en horizontal— que permite el paso de cualquier conducto. Los alzados que sufren la acción solar están protegidos por córtaseles verticales y horizontales que prestan una fisonomía singular al edificio.
Investigación de la construcción
Authors: Tobío José María
Published: August 2014

Ahora que está tan de moda hacer previsiones a largo plazo —25 años por lo menos— no hemos podido f m resistir a la tentación de llevar a cabo algunas reflexiones sobre tan importante enunciado que, como es obvio, condiciona la propia razón de ser del Instituto Eduardo Torroja y nuestra propia actividad.
No descubrimos nada si decimos que la opinión más frecuentemente sustentada por científicos y técnicos en nuestro campo es que «en la construcción poco queda por inventar». Esto se refiere principalmente a los materiales llamados TRADICIONALES. Incluso, en reuniones internacionales de alto nivel se ha llegado a manifestar, por ejemplo, que en el tema del cemento «ya estaba todo investigado».
Como nuestra opinión — y suponemos que la de muchos colegas— no es ésta, nos hemos permitido esta pequeña divagación que, huelga decirlo, no tiene otro valor que expresar la opinión PERSONAL del autor.
La brillantez literaria es un don que rara vez se da en los científicos. Acorde con ello, nuestra exposición ha de tener enormes defectos de forma y de fondo. Vaya, pues, por delante, nuestra humildad en aceptar las críticas, expresadas o no, que se nos hagan.
Using the Power of Social Media Marketing to Build Consumer-Based Brand Equity
Authors: O'Reilly Kelley , Lancendorfer Karen M.
Published: August 2014

This chapter highlights how companies might use social media marketing to build brand credibility and, ultimately, consumer-based brand equity. By building brand credibility and equity through SMM, companies can connect with distinctly different consumer groups. Because consumers are adept integrators of marketing communication channels within and across media, companies with strong virtual communities may reap even greater results from the theoretical perspective of customer-based brand equity discussed within the chapter. Marketing scholars and practitioners alike may find this chapter of interest due to the growing desire by companies to develop strong bonds with consumers and their interest in effectively using social media as a marketing tool.
Greek Politicians and the Use of Online Technologies for Citizen Engagement
Authors: Papagiannidis Savvas , Stamati Teta , Behr Hartmut
Published: August 2014

This chapter examines how politicians utilise Internet technologies to create an online presence, the motivating and hindering factors for doing so, and the perceived significance such a presence can have. The authors present empirical data collected via in-depth interviews with Greek politicians taking part in the general elections of 2012. The findings suggest that although politicians are increasingly interested in engaging with citizens using online technologies, their efforts are not always focused on achieving measurable and tangible results. Consequently, they do not make full use of the potential online technologies offer. Instead, the authors conclude, online strategies need to be organised around predefined objectives and based on clear communication and engagement plans.
Web 2.0 and Social Media in Today's Business World
Authors: Chen Edward T.
Published: August 2014

Social media technology is an innovative way for businesses to collaborate, network, and provide a mechanism for individuals to interact. When social media technology is used effectively, it can be a powerful tool for businesses to market themselves and obtain important data on their customers and competitors. Given the importance and public nature of today's consumer opinions, it is vital for companies to present themselves effectively on social media. Some companies and their employees are not familiar with this form of technology and do not realize the massive amount of data social media sites can generate. Therefore, companies need to develop a social media policy and educate their employees on how to analyze and respond to the data produced from social media. This chapter studies Web 2.0 tools and social media in today's business world and provides guidelines of adopting social media for organizations.
Customer Responses to Arts Festivals
Authors: Chang Angela
Published: August 2014

Arts festivals can be defined as staging various arts to the public to present art forms and provide creative possibilities. Such festivals serve as forms of communication and entertainment, and their ability to reach large audiences has drawn the attention of organisers, sponsors, and researchers. This chapter explores how customers accessed and responded to arts and cultural activities as well as how they were affected by social relationships. Data were collected from a sample of 1,387 respondents during an arts festival. The results show that most respondents of a traditional arts and culture activity comprised numerous families. The high level of satisfaction with the event enhanced the outcomes for future attendance. Thus, in the cultural entertainment industry, marketing efforts in establishing relationships should be proactively pursued because they facilitate enduring relationships and generate satisfaction with organisers. Recommendations and managerial implications are provided.
The Representation of Public Relations Profession and Public Relations Practitioners in the Context of Entertainment Culture in Turkish TV Series
Authors: Cakir Hilal Ozdemir
Published: August 2014

The purpose of this chapter is to explore how the public relations profession and public relations practicioners are depicted in Turkish television series between the years 2000-2010, which are the most preffered entertainment sources of the public on TV. A study is conducted using qualitative content analysis of the two Turkish TV series that had the highest ratings. It analyses the public relations practitioners' characters and occupational roles to look for positive or negative portrayals in order to understand whether these portrayals are shedding a positive or negative light upon the profession of public relations. The results of the study shows that in both of the TV series public the relations profession and public relations characters are portrayed positively in general and from a professional perspective in both of the TV series.
Acceptance of Branded Video Games (Advergames)
Authors: Martí-Parreño José , Ruiz-Mafé Carla , Scribner Lisa L.
Published: August 2014

Advergames are free, branded video games used by advertisers to target audiences with marketing communications in a playful, interactive, and engaging way. Despite their advantages for consumers (i.e., free entertainment content), advergames can also cause concern in consumers (i.e., advertising clutter), making it necessary to explore consumers' attitudes that lead to acceptance of advergames. This chapter analyses the factors that lead consumers to accept advergames as an advertising format analyzing three variables related to consumer-media relationships: 1) consumer attitude toward advertising, 2) consumer attitude toward the presence of brands in video games, and 3) previous experience with video games. The moderating role of culture is also analyzed. To do so, an empirical research study involving American and Spanish students was developed. Findings suggest that attitude towards advertising is the primary factor affecting advergame acceptance for the Spanish sample, while attitude towards product placement in advergames is the primary factor affecting advergame acceptance for the American sample. These results suggest cultural differences related to advergame acceptance.
Knowledges, Discontinuities, Spirals, and Universities
Authors: Ling Lorraine
Published: August 2014

This chapter is deliberately designed to disturb socially constructed and traditional human linear thinking, and as such, the chapter reflects a spiral approach to the content and the ideas addressed. It involves visiting and revisiting concepts at different levels of complexity and depth. It also involves a dialogue of arguments and counter arguments, which could be construed as one of the themes that spiral across and through this chapter. In this chapter, the statement of Foucault (1980), “Knowledge is not made for understanding; it is made for cutting,” is central and is revisited as it is exemplified in discussions of social complexity and supercomplexity, multiple knowledges, knowledge management, and knowledge brokers. In this chapter, the discussion of multiple knowledges is linked with the concept of a university as a social artefact and is explored from the time of Plato to the Idea of a university as expressed in the work of Cardinal Newman, through to the notion of the modern university and the 21st century university. What is eschewed throughout this chapter is the notion that past, present, and future are elements in linear relationship to each other. Rather, they are seen as interactive zones of meaning that make and remake each other in a dialectical relationship as the spiral would implies.
Power Explorer
Authors: Skamnioti Paschalina
Published: August 2014

Persuasive games are often designed for social, political, or environmental purposes to promote particular values and behaviours. In this chapter, the author analyzes the manner in which values are conveyed to the player through the persuasive game Power Explorer, a mobile game for reducing household energy consumption. For the analysis the author takes into account the diverse approaches of Values Education and the criticism they have received. In particular, a) the author illustrates the similarities of the values education designed in Power Explorer with the traditional approach of Character education, and b) the author raises ethical issues regarding the design, the objectives, and the effects of games for change using persuasive technologies1, in terms of both the individual and the society.
Customers' Satisfaction and Loyalty in the Economic Recession
Authors: Samanta Irene
Published: August 2014

This chapter examines the main criteria that influence customer satisfaction and its effects on a case bank. The study identifies the actions that banks take into account and analyses the elements that can be improved in order to keep their customers satisfied and loyal during the economic recession. The research clarifies the satisfaction criteria, including ease of access, service provided, products and personnel, that are perceived as important in the evaluation of customer satisfaction. Quantitative research was conducted with 419 customers of a Greek bank. The results unexpectedly showed that respondents were satisfied with the bank. Competitive advantages were based mainly on quality service and personnel. Customers continue to use the bank for their transactions and to recommend new customers. The results also confirm the hypotheses that “total customer satisfaction” is related to “loyalty,” “recommendation,” and “complaints handling.” However, in general their interrelationships did not fit the linear regressions cases.
Brand Positioning through Print Advertising
Authors: Xu JuanJuan , Bao Yeqing , Landry Timothy D.
Published: August 2014

Due to rapid economic development and a burgeoning middle class, China has attracted consumer market competition from around the world. The market environment in China, however, is culturally complex. Juxtaposed between traditional Eastern values and Western materialism, China presents unique challenges regarding brand positioning. Within this scope of inquiry, the authors explore an important aspect of positioning: consumer product branding through print advertising. Specifically, they explore the demographic makeup of models/spokespeople, look at differences between domestic and foreign brands, and postulate how such advertising choices influence brand perceptions. The results show that Chinese domestic brands prefer Asian models. Interestingly, multinational firms appear to be choosing young, mostly male, Asian models. This is an important shift in branding and garners support for “localization” strategies for Chinese markets.
Building China's Global Brands
Authors: Sexton Donald E.
Published: August 2014

The Chinese economy has been growing rapidly for several years. Important competitive strengths have included efficient operations. Going forward, skills beyond operations capabilities are required for success in global markets. In particular, in the global economy, long run success is often associated with strong brands. Many Chinese organizations have been successful in strengthening their brands. Yet, Chinese organizations must continue to strengthen their brands as well as manage and maintain their existing brands. Building strong global brands requires a much broader perspective than building local brands. Positioning and coordinating global brands requires the ability to evaluate many markets at the same time, including markets that at present are only potential markets. The purpose of this chapter is to examine how Chinese organizations can build and strengthen global brands and the implications for the global strategies they can employ and the skills they need.
Educating Adults to Talk about Death and Dying to Assist Grieving Children
Authors: Larrotta Clarena , Moreno José Luis
Published: August 2014

This qualitative research study took place in Central Texas and is rooted in the principles of collaborative action research. This research approach was useful to gather facts, define the problem, engage study participants, and come up with a product that fit the community need defined by Compassionate Heart Hospice, the focal study setting. The research questions are: How can we use the pillars of community development to identify needs and assets within the hospice setting? What can bereavement facilitators working at hospice do to educate adults to talk about death and dying to assist grieving children? Data collection sources include: interviews, written reflections, field notes, documents (e.g., hospice fliers, brochures, and written information), and site observations and visits. Study findings are presented through the following three themes: (1) hospice and the pillars of community development, (2) educating adults to assist grieving children, and (3) creating a curricular guide for bereavement facilitators. The chapter includes an introduction, a description of the four pillars of community development (physical capital, intellectual and human capital, social capital, and financial capital) as explained by Ferguson and Dickens (1999), a section addressing why educating adults on death and dying is relevant, and a section on grief as a process. After that, the authors provide all relevant details describing the qualitative methodology for the implementation of the study (e.g., study settings, study participants, data collection sources, data analysis) and conclusion.
The Power of Collaborative Inquiry and Metaphor in Meeting the Health Literacy Needs of Rural Immigrant Women
Authors: Lauzon Al , Farabakhsh Rachel
Published: August 2014

Rural communities often face the need to reach out to immigrant groups to help sustain their populations. However, rural communities often lack the necessary support and resources required to meet the needs of immigrant communities. This chapter reports on the role of a participatory education project in meeting the needs of immigrant Old Colony Mennonite women. Building on an existing ESL program in a rural community in Southwestern Ontario, a participatory health literacy pilot project was developed employing an action research format. With the participants, the authors explored the participant identified topic of dealing with the stress of parenting, using metaphors (presentational knowing) and collaborative inquiry. Post-project, in-depth, semi-structured interviews were completed with participants and program staff. Interview data was analyzed using a constant comparison method and five themes are identified and discussed: (1) reconsidering the nature of their children; (2) the power of language to transform; (3) modeling with language; (4) changing parental behaviours; and (5) normalizing what happens at home. The authors then discuss the efficacy of utilizing presentational knowing and collaborative inquiry as a pedagogical strategy for meeting the learning needs of rural immigrants.
Health Literacy
Authors: Knight Glenda Denson
Published: August 2014

The design of the U.S. healthcare system along with increasing expectations of individuals create barriers to health care. One barrier is limited Health Literacy (HL). This essential healthcare ingredient is often disregarded (Murphy-Knoll, 2007). There is debate concerning the definition of HL (Sorensen, Van den Broucke, Fullam, Doyle, Pelikan, Slonska, & Brand, 2012). Still, there is consensus that HL is necessary for quality healthcare (Parker & Gazmararian, 2003) and that HL deficiencies must be addressed. Limited HL independently contributes to poorer health status, greater risk of hospitalizations, and increased likelihood of mortality (Hanchate, Ash, Gazmararian, Wolf, & Paasche-Orlow, 2008; Jeppesen, Coyle, & Miser, 2009). Much is known about HL. Still, few advancements have been made due to gaps between what we know about HL, and the application of that knowledge (Ishikiawa & Kiuchi, 2010). The purpose of this chapter is to provide a HL overview and recommend improvement strategies.
The Self-Cultivation Model of Lifelong Learning
Authors: Cohen Avraham , Bai Heesoon , Fiorini Karen
Published: August 2014

This chapter takes the prevailing anti-aging sentiment and cultural practice as the starting point of a critical analysis and shows that the modernist worldview of materialistic individualism is at their foundation. Exposing and critiquing the limiting deficit understanding of human aging and human development in this worldview, the authors propose a developmental model that moves beyond materialistic individualism and egoic development and sees human beings becoming progressively integrated into larger and larger circles of being that include not only human others but also non-human others such as Nature and Cosmos. This wider and holistic vision of human development is influenced by classical Asian philosophies that posit post-egoic notions of human being. Using biographical materials to identify the themes relevant to post-egoic development, the authors sketch a model of lifelong learning and growth with what they see as essential elements of such growth: secure bonding and connection, nurturance and nourishing, spirituality, self-cultivation and inner work, community development, virtue cultivation, healing, meditation, and contemplative practices.
Investigation of Quasi Z-Source Cascaded Multilevel Inverter for PV System with Maximum Power Point Tracking
Authors: Umarani Devaraj , Seyezhai R.
Published: August 2014

This paper investigates the quasi Z-source cascaded multilevel inverter for a photovoltaic system with maximum power point tracking. The main advantage of quasi z-source configuration is that it has boost characteristics and inversion capability in a single stage avoiding complexity of having a number of converter stages thereby increasing the efficiency. Also it has continuous input characteristic which makes it best suitable for PV applications. Perturb and Observe (P&O) algorithm has been chosen for tracking the maximum power point of the PV source. Five level cascaded inverter with quasi - impedance network powered by PV sources has been considered in this paper. Maximum constant boost control technique has been implemented for controlling the shoot-through period of the inverter. Simulation of the proposed topology has been carried out in Matlab/Simulink and performance parameters have been calculated and the results are verified.
Performance Estimation of Multicarrier Based Multilevel Inverter
Authors: Gayathri Monicka Jayabal , Jamuna Venkatesan , Hemalatha Kannakumar
Published: August 2014

This paper presents performance features of Symmetric and Asymmetric Cascaded Multilevel inverter. Both the Phase shifted and level shifted multicarrier pulse width modulation (MCPWM) technique are used in MLI. The best harmonic performance is improved by Level-shifted multicarrier modulations technique . The objective of this work to propose MCPWM Technique for multilevel inverter with equal and unequal DC sources. The Performances indices like Total Harmonic Distortion (THD), reduction of switches and number of DC Sources is considered. An appropriate method to achieve the MC modulation technique is also presented in this paper.
Space Vector Modulation Controlled Single Phase Five Level Inverter for Fuel Cell Applications
Authors: Raghavendra Rajan Vijayaraghavan , Tejesvi N. , Sharmila S. Shantha , Neenu Therese Antony , Sasikumar M.
Published: August 2014

In low power system a single phase converter is usually adopted. This paper deals with five-level Converter topology with SPWM technique. A review of the state of the art of five-level topologies and theoretical power loss comparison with proposed solution is realized. The main characteristics of these modulations are reduced, switching losses, balanced power loss dissipation among the devices with in a cell and among the series connected cells. A Neutral point Clamped type of Multilevel Inverter is more efficient .The proposed converter architecture is based on Single-Phase five-level system for Fuel cell with Polymer Exchange type. In this system, Space Vector Modulation (SVM) technique is used. Simulation and Experimental results show the effectiveness of the proposed solution.
Comparison of Performance Measures of Speed Control for a DC Motor Using Hybrid Intelligent Controller and Optimal LQR
Authors: Narmadha T. Velayudham , Baskaran Chackaravarthy , Sivakumar K.
Published: August 2014

-In this paper , performance of fuzzy PD , fuzzy PI , fuzzy PD+I , fuzzy PID controllers are evaluated and compared. This paper also describes the speed control based on Linear Quadratic Regulator (LQR) technique. The comparison is based on their ability of controlling the speed of DC motor, which merely focuses on performance index of the controllers, and also time domain specifications such as rise time, settling time and peak overshoot. The controller is modelled using MATLAB software, the simulation results shows that the fuzzy PID controllers are the best performing candidates in all aspects but it as higher overshoot and IAE in comparison with optimal LQR. The Fuzzy PI controller exhibited null offset but suffers from poor stability and peak overshoot, whereas the fuzzy PD controller has fast rise time, with no overshoots but the IAE is much greater. Thus, the comparative analysis recommends fuzzy PID controller but it is usually associated with complicated rule base and tedious tuning. To circumvent these problems, the proposed LQR controller gives better performance than the other controllers.
Energy Efficient VLSI Based DCT Architecture with Accurate Error Compensation
Authors: Jessintha D. , Kannan M. , Srinivasan P.L.
Published: August 2014

Discrete Cosine Transform (DCT) is commonly used in image compression. In the history of DCT, a milestone was the Distributed Arithmetic (DA) technique. Due to the technology dependency a multiplier-less computation was built with DA based technique. It occupied less area but the throughput is less. Later, due to the technology scaling, multiplier based architectures can be easily adapted for low-power and high-performance architecture. Fixed width multipliers [1]-[7] reduces hardware and time complexity. In this work, Radix 4 fixed width multiplier is adapted with DCT architecture due to low power consumption and saves 30% power. In order to reduce truncation errors caused during fixed width multiplication, an estimation circuit is designed based on conditional probability theory.
Behavior of DFIG with Direct Torque Controller at Unbalanced and Distorted Grid Voltage Conditions
Authors: Ramkumar A. , Durairaj S. , Dhivya K.
Published: August 2014

This project focuses on the enhanced and development of the direct torque controller of doubly fed induction generator (DFIG) with unbalanced and distorted grid voltage conditions. Real, reactive power and electromagnetic torque are improved by using the design and development of Analytical model, Finite Element analysis (FEM), Direct Torque Controller with active Crowbar circuit and network side converter. Finally fundamental, fifth and seventh order harmonics are removed by using Fast Fourier transform (FFT) and also determine Total harmonic distortion (THD) and Individual harmonic distortion (IHD). The simulation result is exposed using power system computer aided design (PSCAD).
Video Steganography Algorithm for Embedding Data into Raw Video Streams Using Discrete Cosine Transform
Authors: Rajesh G.R. , Nargunam A. Shajin
Published: August 2014

This paper presents an algorithm for hiding information’s in raw video steams using art of steganography using discrete wavelet transform. While mostly applied to still images in the past, it has become very popular for video streams recently. When steganographic methods are applied to digital video streams, the selection of target pixels, which are used to store the secret data, is especially crucial for an effective and successful-embedding process; if pixels are not selected carefully, undesired spatial and temporal perception problems occur in the stegno-video. Typically, an irrecoverable steganography algorithm is the algorithm that makes it hard for malicious third parties to discover how it works and how to recover the secret data out of the carrier file. In this paper, a new embedding algorithm is proposed to hide the secret data in moving videos. The 2D-DCT of the video is taken and the secret message is embedded. The performance measures are evaluated for the quality of the video after the data hiding and show good results.
Study the Effect of CaCO3 Nanoparticles on the Mechanical Properties of Virgin and Waste Polypropylene
Authors: Najim A. Saad , Hadi Nizar Jawad , Mohamed Dhay Jawad
Published: August 2014

This paper study the effect of the calcium carbonate (CaCO3) nanoparticleson mechanical and physical properties of virgin and waste polypropylene (pp.). 3, 5, 7 and 10 (wt. %) of CaCO3nanoparticles are mixed with each of virgin and waste pp.These mixture are blended in co-rotating twin screw extruder at 190 °Cand different screw speed (25 and 50 rpm). Different mechanical and physical technique are used to evaluate the characteristics of polymer nanocomposites ex: Tensile strength , elastic modulus , impact strength , hardness and density. The results of virgin pp./(CaCO3) showed that The tensile strength decreasing with nano(CaCO3) concentration for virgin pp. , while for waste increasing at 5% and then decreasing gradually. The impact strength increasing with nanoCaCO3concentration increasing. The hardness and density increasing with the increasing of the nanoCaCO3concentration for two type of pp.Nearly all the mechanical properties were found to increase with the processing speed of 25 rpm. In this studies, it was seen that the highest processing speed of 50 rpm does not give the material performance enhancements due to higher shear intensity which causes defect points in the structure. Also the time is smaller at high screw speeds, so there is not enough time for good dispersion to occur.
Importance of Enclosed Gas for Modal Analysis of Space Inflatable Structure
Authors: Liu Fei , He Wei Liang
Published: August 2014

The stress distribution and modal characteristics of a space inflatable torus is investigated using the nonlinear finite element method. This paper focused on the effect of enclosed air on the modal analysis of the torus, including the effect of follower pressure load and the effect of the interaction between the enclosed air and the torus structure. Research shows that follower pressure stiffness significantly reduces the natural frequencies and changes mode shapes order. The fluid-structure interaction obviously reduces the natural frequencies, and the in-plane translation mode is observed. Follower pressure stiffness has no effect on the in-plane translation mode. Fluid-structure interaction decreases the natural frequencies of the modal considering the follower load effect, but it does not change mode shapes order. The effect of enclosed gas seriously reduces the natural frequencies, changes mode shapes order, and produces the in-plane translation mode.
Evaluation of Oven and Microwave Drying of Ceramic Material with Adition of Quartzito to Form a Composite
Authors: Charbel Andrea Teixeira , Freitas Caio , Torres Daniel , Moreira Fellipe , Carvalho Luiz Cláudio , Candido Lucas , Birchal Viviane Santos
Published: August 2014

This study aims to assess the stage of drying ceramic composite through kinetic curves of drying , to evaluate the drying time and shrinkage of the material during the process carried out in an oven at 50 oC and microwave at 10 % of maximum power 700 W. For this study, compositions with addition of “São Tomé” stone and clay in a 1:4 mass ratio were prepared and this composite was compared with the samples fabricated only with clay. To evaluate the structure resulting from the drying computed microtomography analysis was performed. The results indicated that the addition of stone “São Tomé” contributed to reducing the processing time by decreasing the conformation water. The use of microwave drying process as favored gain strength of the product due to the lower fraction of pores, and also ensure a shorter processing time due to the increased rate of drying.
Investigation of Solid Solubility, Hardness, and Thermal Properties of Au-Ge-Sb System
Authors: Thipayarat Kamolchanok , Nisaratanaporn Ekasit , Lohwongwatana Boonrat
Published: August 2014

In recent years, the Au-Ge-Sb system has been studied as a possible alternative alloy for soldering applications [1-4]. The alloy has various fbenefits such as (i) low melting temperature which allows the alloy system to be used as a drop-in solution for high performance lead-free solders, (ii) three distinct phases of different hardness values (100, 150 and 500 HV) which offer the ability to fine tune the composition and microstructure to a wide range of properties, and (iii) limited solute solubility which offers ease of control and fine-tuning of microstructure, mechanical properties and colors. Gold compositions centered around 75wt% gold were modeled and selected using the CALPHAD (CALculation of PHAse Diagram) method. Predictions were later confirmed by experimental results. The alloy solidifies in the range of 242.5-261.7 °C. The overall hardness values were measured and confirmed to be within the volume average value of all the phases combined.
Flight Loads Analysis of a Maneuvering Transport Aircraft
Authors: Zhang Hui , Li Jie , Liu Qiong
Published: August 2014

The paper provides a method applicable for the determination of flight loads for maneuvering aircraft, in which aerodynamic loads are calculated based on doublet lattice method, which contains three primary steps. Firstly, non-dimensional stability and control derivative coefficients are obtained through solving unsteady aerodynamics in subsonic flow based on a doublet lattice technical. These stability and control derivative coefficients are used in second step. Secondly, the simulation of aircraft dynamic maneuvers is completed utilizing fourth order Runge-Kutta method to solve motion equations in different maneuvers to gain response parameters of aircraft due to the motion of control surfaces. Finally, the response results calculated in the second step are introduced to the calculation of aerodynamic loads. Thus, total loads and loads distribution on different components of aircraft are obtained. According to the above method, abrupt pitching maneuvers, rolling maneuvers and yawing maneuvers are investigated respectively.
Modeling and Simulation of Supersonic Flow in 2D Nozzle Using MacCormack’s and Upwind Methods
Authors: Chegeni Mohsen , Ehterami Marzieh , Doolabi Mustafa Hadi , Soltaninezhad Mohamad Saleh
Published: August 2014

In this work, two-dimensional inviscid supersonic flow in nozzle has been investigated using CFD schemes and characteristics method. The employed scheme is MacCormack’s finite volume method. Our own code CHARMAC, was written using MATLAB environment. Standard boundary conditions and the grid parameters were considered to solve the problem. Before analyzing the flow by CFD method, we obtained the ideal nozzle geometry using the method of characteristics for a 2D divergent Nozzle. Using 2D nozzle flow relations, an optimal throat area is found. At the end we compare the results with the advection upstream splitting Method (Ausm) and Fluent.
Study on Flame Spread over Aviation Kerosene and Diesel
Authors: Li Man Hou , Lu Shou Xiang , Guo Jin , Tsui Kwok Leung
Published: August 2014

Flame spreading over liquid fuels is a common phenomenon involving in accidental fuel leakage in aircraft crash or oil tanker which may result in many casualties and economic losses. Comparative experiments are conducted concerning flame spread over aviation kerosene (RP5) and 0# diesel at a variety of initial fuel temperatures. The threshold value of initial fuel temperature for liquid-phase and gas-phase controlled flame spread is approximately 17 °C larger than liquid’s flashpoint for both oils. For a given initial fuel temperature, due to low volatility and ignitability of 0# diesel, its flame spread rate is smaller than that of RP5, while the length of the horizontal subsurface convection flow is larger. Given the difference in flame speed, fire accidents for RP5 are potentially more hazardous than those of 0# diesel. Moreover, the variation trend of subsurface convection flow length falls nearly linearly with the initial fuel temperature for both fuels.
Guidance Solutions for Multiple Vehicle Assembly
Authors: Okasha Mohamed
Published: August 2014

This paper exploits the guidance algorithms to assembly multiple vehicle in close proximity. The objective is to move each vehicle in the assembly to its final location. The guidance laws are determined such that, each vehicle should attract to the others on long distances and avoid collision with them in short distances. These laws are based on Lyapunov’s second method that utilize the potential function theory to insure the stability of the assembly process. Numerical investigations were performed for different configurations of the assembly. The proposed algorithms may prove useful for future mission applications such as satellite formation flying, structures assembly in space and mobile robots control.
Mechanical Performance Analysis of Composite Scarf Joints with Debond Flaw
Authors: Guo Xia , Li Zeng Shan , Zhang Wen Chao , Tan Ri Ming , Guan Zhi Dong
Published: August 2014

The adhesive structural mechanical performance is influenced by debond flaw. This paper presents a research on the effect of flaws on the mechanical performance of composite scarf joints. The experimental results show that the load-carrying capacity of composite scarf joints changed along with the location of the debond flaw. The location of the flaw in the bondline influences the failure mode. Additionally, the finite element method was employed to obtain the failure mode of the composite scarf joint. The adhesively bonded joints were modeled using ABAQUS software. The computational results show that flaws located at the edge of the bond region result in more pronounced load reduction than which located at the middle of bond region.
Non-Asbestos Gasket Materials for Formula Design
Authors: Yuan Xi Chen , Liu Mei Hong
Published: August 2014

Introduce the component of non-asbestos gasket material, and the raw materials which selected after a comparative study. Reasonable arrange the experiment through the design of orthogonal experiment method, reduce test times, shorten the cycle, avoid the blindness of when the experiment under the premise of the ideal results are obtained, and eventually won the basic formula composition of non-asbestos gasket materials.
Study on Threaded Connection’s Strength in Gas Storage Well Using Finite Element Analysis
Authors: Cai Bai Song
Published: August 2014

Sealing property of threaded connection in gas storage wells is of great importance to the safety operation condition of CNG filling station. Indoor leakage tests of threaded-connect pipes are conducted and mathematical models to calculate the axial and thread contact stresses are established. Moreover, finite element analysis is used to figure out the maximum equivalent Von Mises stress in threaded connection. The results show that strain and stress of tested pipes have the linear distribution regularity. Also, it can be seen from the stress nephogram that the first to fourth pairs of threads bear 40% of the whole load and if the first pair has slip phenomena, other pairs of threads would be affected easily which leads to the possibility of gas storage well leakage.
Evaluation of Flexural Strength about Shape of the Steel Plate-Concrete Composite Beam with Bolt
Authors: Kim Do Bum , Choi Byong Jeong
Published: August 2014

The composite beam is efficient and easy to construction. But deformation capacity is degraded with thickness of bottom tension plate. The composition ratio by shear connector have a decisive effect on deformation capacity. This research evaluated the flexural strength and deflection with variable of thickness and protrusion length. The effect of composite ratio and shear connector was analyzed through fracture behaviors and distribution of strain through two point loading test.