Design of an Edge -coupled dual -ring Split-ring resonator

Electric permittivity and magnetic permeability control electromagnetic wave propagation th rough materials. I n naturally occu rring materials, these are positive. Artificial materials exhi b iting negative material properties have been reported : they are referred to as metamaterials. This paper concentrates on a ring-type split-ring resonator (SRR) exhibiting negative magnetic permeability. The design and synthesis of the SRR using the genetic-algorithm approach is explained in detail. A user-friendly g raphical user i nterface (G U I ) for an SRR optim izer and estimator using MATLAB TM is also presented

Octagon Shaped Microstrip Patch Antenna For Dual Band Applications

The paper proposes an octagon shaped Microstrip Patch Antenna suitable for dual band applications. The striking features of this compact, planar antenna are sufficient isolation between the two operating bands and an area reduction of - 29% in comparison to a conventional circular patch antenna operating in the same band

Electromagnetically Coupled Dual Port, Dual Band, Octagonal Patch Antenna

In this paper, a dual port, dual frequency, dual polarized, octagonal shaped Microstrip patch antenna, suitable for GPS applications is discussed experimentally and theoretically. The proposed antenna configuration is characterized by good impedance bandwidth, gain, isolation between two ports and broad radiation patterns

Octagonal Microstrip Patch Antenna For Dual Band Applications

A dual port dual polarized octagonal microstrip patch antenna suitable for dual band applications is discussed theoretically and experimentally. The antenna exhibits good impedance bandwidth, gain and broad radiation patterns. Parameters predicted by the Conformal Finite Difference Time Domain algorithm show good agreement with the simulated results and experimental observations

Dual retrieval in conceptual information systems

Conceptual Information Systems provide a multi-dimensional conceptually structured view on data stored in relational databases. On restricting the expressiveness of the retrieval language, they allow the visualization of sets of realted queries in conceptual hierarchies, hence supporting the search of something one does not have a precise description, but only a vague idea of. Information Retrieval is considered as the process of finding specific objects (documents etc.) out of a large set of objects which fit to some description. In some data analysis and knowledge discovery applications, the dual task is of interest: The analyst needs to determine, for a subset of objects, a description for this subset. In this paper we discuss how Conceptual Information Systems can be extended to support also the second task.

Heat stress response for physiological traits in dairy and dual purpose cattle populations on phenotypic and genetic scales

The main objective of this thesis was to determine the potential impact of heat stress (HS) on physiological traits of lactating cows and semen quality of bulls kept in a temperate climate. The thesis is comprised of three studies. An innovative statistical modeling aspect common to all three studies was the application of random regression methodology (RRM) to study the phenotypic and genetic trajectory of traits in dependency of a continuous temperature humidity index (THI). In the first study, semen quality and quantity traits of 562 Holstein sires kept on an AI station in northwestern Germany were analyzed in the course of THI calculated from data obtained from the nearest weather station. Heat stress was identified based on a decline in semen quality and quantity parameters. The identified general HS threshold (THI = 60) and the thermoneutal zone (THI in the range from 50 to 60) for semen production were lower than detected in studies conducted in tropical and subtropical climates. Even though adult bulls were characterized by higher semen productivity compared to younger bulls, they responded with a stronger semen production loss during harsh environments. Heritabilities (low to moderate range) and additive genetic variances of semen characteristics varied with different levels of THI. Also, based on genetic correlations genotype, by environment interactions were detected. Taken together, these findings suggest the application of specific selection strategies for specific climate conditions. In the second study, the effect of the continuous environmental descriptor THI as measured inside the barns on rectal temperatures (RT), skin temperatures (ST), vaginal temperatures (VT), respiration rates (RR), and pulse rate (PR) of lactating Holstein Friesian (HF) and dual-purpose German black pied cattle (DSN) was analyzed. Increasing HS from THI 65 (threshold) to THI 86 (maximal THI) resulted in an increase of RT by 0.6 °C (DSN) and 1 °C (HF), ST by 3.5 °C (HF) and 8 °C (DSN), VT by 0.3 °C (DSN), and RR by 47 breaths / minute (DSN), and decreased PR by 7 beats / minute (DSN). The undesired effects of rising THI on physiological traits were most pronounced for cows with high levels of milk yield and milk constituents, cows in early days in milk and later parities, and during summer seasons in the year 2014. In the third study of this dissertation, the genetic components of the cow’s physiological responses to HS were investigated. Heat stress was deduced from indoor THI measurements, and physiological traits were recorded on native DSN cows and their genetically upgraded crosses with Holstein Friesian sires in two experimental herds from pasture-based production systems reflecting a harsh environment of the northern part of Germany. Although heritabilities were in a low range (from 0.018 to 0.072), alterations of heritabilities, repeatabilities, and genetic components in the course of THI justify the implementation of genetic evaluations including heat stress components. However, low repeatabilities indicate the necessity of using repeated records for measuring physiological traits in German cattle. Moderate EBV correlations between different trait combinations indicate the potential of selection for one trait to simultaneously improve the other physiological attributes. In conclusion, bulls of AI centers and lactating cows suffer from HS during more extreme weather conditions also in the temperate climate of Northern Germany. Monitoring physiological traits during warm and humid conditions could provide precious information for detection of appropriate times for implementation of cooling systems and changes in feeding and management strategies. Subsequently, the inclusion of these physiological traits with THI specific breeding values into overall breeding goals could contribute to improving cattle adaptability by selecting the optimal animal for extreme hot and humid conditions. Furthermore, the recording of meteorological data in close distance to the cow and visualizing the surface body temperature by infrared thermography techniques might be helpful for recognizing heat tolerance and adaptability in cattle.

Formación de formadores : módulo, bases didácticas de la formación.

La Asociación AMUSAL elabora y edita una colección de libros de gestión y dirección de empresas de la que forma parte este módulo formativo, subvencionado por el Instituto de Fomento de la Región de Murcia (INFO) y el Fondo Social Europeo (FSE)

Formación de formadores : módulo, bases psicopedagógicas de la formación.

La Asociación AMUSAL elabora y edita una colección de libros de gestión y dirección de empresas de la que forma parte este módulo formativo, subvencionado por el Instituto de Fomento de la Región de Murcia (INFO) y el Fondo Social Europeo (FSE)

Aplicaciones informáticas de gestión : módulo Microsoft Office.

La Asociación de Empresas de Economía Social de la Región de Murcia (AMUSAL) dedicada a la formación de trabajadores activos y desempleados elabora materiales didácticos propios para sus actuaciones formativas que son permanentemente puestas al día previa valoración de las necesidades de las empresas asociadas en al ámbito de la gestión y dirección empresarial. En este caso se trata de un módulo formativo (MS-Office) del área de aplicaciones informáticas.

Aplicaciones informáticas de oficina : módulo introducción a la informática y sistemas operativos.

La Asociación de Empresas de Economía Social de la Región de Murcia (AMUSAL) dedicada a la formación de trabajadores activos y desempleados elabora materiales didácticos propios para sus actuaciones formativas que son permanentemente puestos al día previa valoración de las necesidades de las empresas asociadas, en el ámbito de la gestión y dirección empresarial. En este caso se trata del módulo formativo : introducción a la informática y sistemas operativos del área de aplicaciones informáticas.

Técnico de formación : módulo de evaluación de la formación.

Módulo formativo para la especialidad de Técnico de Formación, elaborado y editado por la Asociación de Empresas de Economía Social de la Región de Murcia (AMUSAL) para mejorar los procesos formativos de llevados a cabo por la Asociación para sus socios. Los temas tratados son: Evaluación del aprendizaje, validez y fiabilidad, evaluación de conocimientos, evaluación de prácticas, evaluación de acciones formativas, el seguimiento formativo e instrumentos de evalución.

Formador ocupacional : programación del proceso de enseñanza-aprendizaje. Módulo.

Módulo formativo para la especialidad de Formador Ocupacional elaborado y editado por la Asociación de Empresas de Economía Social de la Región de Murcia para mejorar los procesos formativos llevados a cabo por la Asociación para sus socios. Los temas tratados son: Formación en la empresa, el proceso de enseñanza-aprendizaje en la formación de adultos, el análisis de puestos de trabajo y la programación educativa.

Módulo 0 : primer curso de Educación Infantil (Grupo B) : año académico 2008-09.

Publicación realizada al amparo de los Proyectos de Innovación Educativa tipo A-2, en el contexto de la Convergencia Europea (R-232/2008, de 22 de abril de la Universidad de Murcia), financiados por la Universidad de Murcia y por la Comunidad Autónoma de la Región de Murcia.

2õ curso de maestro de educación infantil de adaptación al EEES, módulo inicial : guía del alumno, curso 2008-2009.

Publicación realizada al amparo de los Proyectos de Innovación Educativa tipo A-2, en el contexto de la Convergencia Europea (R-232/2008, de 22 de abril 2008 de la Universidad de Murcia), financiados por la Universidad de Murcia y por la Comunidad Autónoma de la Región de Murcia.