RRNS-convolutional encoded concatenated code for OFDM based wireless communication

The modern telecommunication industry demands higher capacity networks with high data rate. Orthogonal frequency division multiplexing (OFDM) is a promising technique for high data rate wireless communications at reasonable complexity in wireless channels. OFDM has been adopted for many types of wireless systems like wireless local area networks such as IEEE 802.11a, and digital audio/video broadcasting (DAB/DVB). The proposed research focuses on a concatenated coding scheme that improve the performance of OFDM based wireless communications. It uses a Redundant Residue Number System (RRNS) code as the outer code and a convolutional code as the inner code. The bit error rate (BER) performances of the proposed system under different channel conditions are investigated. These include the effect of additive white Gaussian noise (AWGN), multipath delay spread, peak power clipping and frame start synchronization error. The simulation results show that the proposed RRNS-Convolutional concatenated coding (RCCC) scheme provides significant improvement in the system performance by exploiting the inherent properties of RRNS.

Managing Scholarly Communication in the Web 2.0 Environment: The Role of University Libraries

Scholarly communication over the past 10 to 15 years has gained a tremendous momentum with the advent of Internet and the World Wide Web. The web has transformed the ways by which people search, find, use and communicate information. Innovations in web technology since 2005 have brought out an array of new services and facilities and an enhanced version of the web named Web 2.0. Web 2.0 facilitates a collaborative environment in which the information users can interact with the information. Web 2.0 enables its users to create, annotate, review, share re-use and represent the information in new ways thereby optimizing the information dissemination

Short Communication: Polystyrene-an inert carrier for L·glutaminase production by marine Vibrio costico/a under selld-state fermentation

Polystyrene beads, impregnated with mineral salts/glutamine medium as inert support, were used to produce L-glutaminase from Vibrio costicola by solid-state fermentation. Maximum enzyme yield, 88 U/g substrate, was after 36 h. Glucose at 10 g/kg enhanced the enzyme yield by 66%. The support system allowed glutaminase to be recovered with higher specific activity and lower viscosity than when a wheat-bran system was used

Rectangular Dielectric Resonator Antenna Configurations For Mobile Communication Applications

Experimental investigations on Microstrip line excited Dielectric Resonator Antenna configurations suitable for Mobile Communication applications are reported. High permittivity (εrd = 48) resonator samples with different aspect ratios are employed for the study. Theoretical analysis performed using FDTD method is also presented.

Knowledge Building in Landscape Architecture

The objective of this study was to develop an internet-based seminar framework applicable for landscape architecture education. This process was accompanied by various aims. The basic expectation was to keep the main characteristics of landscape architecture education also in the online format. On top of that, four further objectives were anticipated: (1) training of competences for virtual team work, (2) fostering intercultural competence, (3) creation of equal opportunities for education through internet-based open access and (4) synergy effects and learning processes across institutional boundaries. This work started with the hypothesis that these four expected advantages would compensate for additional organisational efforts caused by the online delivery of the seminars and thus lead to a sustainable integration of this new learning mode into landscape architecture curricula. This rationale was followed by a presentation of four areas of knowledge to which the seminar development was directly related (1) landscape architecture as a subject and its pedagogy, (2) general learning theories, (3) developments in the ICT sector and (4) wider societal driving forces such as global citizenship and the increase of open educational resources. The research design took the shape of a pedagogical action research cycle. This approach was constructive: The author herself is teaching international landscape architecture students so that the model could directly be applied in practice. Seven online seminars were implemented in the period from 2008 to 2013 and this experience represents the core of this study. The seminars were conducted with varying themes while its pedagogy, organisation and the technological tools remained widely identical. The research design is further based on three levels of observation: (1) the seminar design on the basis of theory and methods from the learning sciences, in particular educational constructivism, (2) the seminar evaluation and (3) the evaluation of the seminars’ long term impact. The seminar model itself basically consists of four elements: (1) the taxonomy of learning objectives, (2) ICT tools and their application and pedagogy, (3) process models and (4) the case study framework. The seminar framework was followed by the presentation of the evaluation findings. The major findings of this study can be summed up as follows: Implementing online seminars across educational and national boundaries was possible both in term of organisation and technology. In particular, a high level of cultural diversity among the seminar participants has definitively been achieved. However, there were also obvious obstacles. These were primarily competing study commitments and incompatible schedules among the students attending from different academic programmes, partly even in different time zones. Both factors had negative impact on the individual and working group performances. With respect to the technical framework it can be concluded that the majority of the participants were able to use the tools either directly without any problem or after overcoming some smaller problems. Also the seminar wiki was intensively used for completing the seminar assignments. However, too less truly collaborative text production was observed which could be improved by changing the requirements for the collaborative task. Two different process models have been applied for guiding the collaboration of the small groups and both were in general successful. However, it needs to be said that even if the students were able to follow the collaborative task and to co-construct and compare case studies, most of them were not able to synthesize the knowledge they had compiled. This means that the area of consideration often remained on the level of the case and further reflections, generalisations and critique were largely missing. This shows that the seminar model needs to find better ways for triggering knowledge building and critical reflection. It was also suggested to have a more differentiated group building strategy in future seminars. A comparison of pre- and post seminar concept maps showed that an increase of factual and conceptual knowledge on the individual level was widely recognizable. Also the evaluation of the case studies (the major seminar output) revealed that the students have undergone developments of both the factual and the conceptual knowledge domain. Also their self-assessment with respect to individual learning development showed that the highest consensus was achieved in the field of subject-specific knowledge. The participants were much more doubtful with regard to the progress of generic competences such as analysis, communication and organisation. However, 50% of the participants confirmed that they perceived individual development on all competence areas the survey had asked for. Have the additional four targets been met? Concerning the competences for working in a virtual team it can be concluded that the vast majority was able to use the internet-based tools and to work with them in a target-oriented way. However, there were obvious differences regarding the intensity and activity of participation, both because of external and personal factors. A very positive aspect is the achievement of a high cultural diversity supporting the participants’ intercultural competence. Learning from group members was obviously a success factor for the working groups. Regarding the possibilities for better accessibility of educational opportunities it became clear that a significant number of participants were not able to go abroad during their studies because of financial or personal reasons. They confirmed that the online seminar was to some extent a compensation for not having been abroad for studying. Inter-institutional learning and synergy was achieved in so far that many teachers from different countries contributed with individual lectures. However, those teachers hardly ever followed more than one session. Therefore, the learning effect remained largely within the seminar learning group. Looking back at the research design it can be said that the pedagogical action research cycle was an appropriate and valuable approach allowing for strong interaction between theory and practice. However, some more external evaluation from peers in particular regarding the participants’ products would have been valuable.

Las comisiones locales de Educación Intercultural : una respuesta comunitaria a la interculturalidad.

Monográfico con el título: 'La educación en una sociedad multicultural'. Resumen basado en el de la publicación

Conflicto y diálogo intercultural.

Se presenta memoria final de proyecto educativo que propone la aplicación de una metodología basada en el diálogo constructivo, la reflexión y la comunicación para la integración de la comunidad gitana y la superación de conflictos. Se realiza en el IES Francisco de los Cobos en Úbeda, Jaén. Los objetivos son: afrontar desde una posición teórica, práctica y dialógica, el problema del conflicto entre culturas, de la inmigración y de la creciente multiculturalidad de nuestras aulas; incentivar la comunicación intercultural; organización de jornadas de educación intercultural; creación del taller 'jugar y pensar'.

Educación intercultural : nuevos retos y propuestas en los centros de adultos.

Se presenta memoria final de proyecto educativo que pretende facilitar el aprendizaje del español como medio integrador del desarrollo personal, social y cultural de los inmigrantes de la zona. Por otro lado, se pretende sensibilizar a la población autóctona frente al racismo y la xenofobia con el propósito de evitar situaciones de riesgo social y desarraigo cultural en el colectivo de inmigrantes. Se realiza en el CEPER Albuñol en Albuñol, Granada. Los objetivos son: crear un clima de participación y aceptación entre todo nuestro alumnado; mejorar su sentimiento de autoestima; afirmar la identidad cultural y personal de cada uno de nuestros alumnos; facilitar la comunicación intercultural; facilitar la adquisición de una formación instrumental básica; crear aptitudes positivas de comprensión y de solidaridad entre diferentes grupos. Los resultados son: se ha mejorado la autoestima de nuestro alumnado a la hora de realizar tareas propias; se ha creado un clima de aceptación y participación; se ha facilitado la comunicación intercultural mediante la realización de actividades conjuntas; se ha facilitado la colaboración con otros organismos e instituciones; se ha potenciado el uso de las nuevas tecnologías en nuestro centro; se han mejorado las condiciones de participación en nuestras aulas y a su vez de forma paralela en nuestro municipio.

Primer Encuentro del Consejo Regional de la Regi??n de Murcia con Consejos Escolares de Centro : la escuela intercultural en la Regi??n de Murcia

El libro recoge las actas del primer encuentro regional de consejos escolares, reunidos para debatir sobre un tema de gran impacto en la Regi??n de Murcia: la situaci??n de la interculturalidad en los centros escolares. De las conferencias, ponencias, mesa redonda y comunicaciones se puede obtener un perfil bastante ajustado de la poblaci??n inmigrante, su procedencia, las tasas de escolarizaci??n, su distrubuci??n por municipios y centros, su situaci??n acad??mica inicial, los programas espec??ficos de atenci??n promovidos desde la administraci??n, la formaci??n del profesorado, las actuaciones espec??ficas de atenci??n a la diversidad y las propuestas de otras instituciones y organismos: ayuntamientos, ONGs, asociaciones, etc.

I Seminario Regional de Educaci??n Compensatoria e Intercultural en Primaria

La Consejer??a de Educaci??n y Cultura, El Centro de Animaci??n y Documentaci??n Intercultural (CADI) y el CPR Murcia II organizan estas Jornadas con el objetivo de dar a conocer la alta cualificaci??n del profesorado de educaci??n compensatoria e interculturalidad y las ??ltimas tendencias de la educaci??n intercultural, entre ??stas, una propuesta de organizaci??n escolar de compensatoria en EI y EP, el espa??ol como lengua extranjera en primaria, la intervenci??n compensatoria de acuerdo al modelo de programas, etc..