Topological Design of Multiple Virtual Private Networks UTILIZING SINK-TREE PATHS

With the deployment of MultiProtocol Label Switching (MPLS) over a core backbone networks, it is possible for a service provider to built Virtual Private Networks (VPNs) supporting various classes of services with QoS guarantees. Efficiently mapping the logical layout of multiple VPNs over a service provider network is a challenging traffic engineering problem. The use of sink-tree (multipoint-to-point) routing paths in a MPLS network makes the VPN design problem different from traditional design approaches where a full-mesh of point-to-point paths is often the choice. The clear benefits of using sink-tree paths are the reduction in the number of label switch paths and bandwidth savings due to larger granularities of bandwidth aggregation within the network. In this thesis, the design of multiple VPNs over a MPLS-like infrastructure network, using sink-tree routing, is formulated as a mixed integer programming problem to simultaneously find a set of VPN logical topologies and their dimensions to carry multi-service, multi-hour traffic from various customers. Such a problem formulation yields a NP-hard complexity. A heuristic path selection algorithm is proposed here to scale the VPN design problem by choosing a small-but-good candidate set of feasible sink-tree paths over which the optimal routes and capacity assignments are determined. The proposed heuristic has clearly shown to speed up the optimization process and the solution can be obtained within a reasonable time for a realistic-size network. Nevertheless, when a large number of VPNs are being layout simultaneously, a standard optimization approach has a limited scalability. Here, the heuristics termed the Minimum-Capacity Sink-Tree Assignment (MCSTA) algorithm proposed to approximate the optimal bandwidth and sink-tree route assignment for multiple VPNs within a polynomial computational time. Numerical results demonstrate the MCSTA algorithm yields a good solution within a small error and sometimes yields the exact solution. Lastly, the proposed VPN design models and solution algorithms are extended for multipoint traffic demand including multipoint-to-point and broadcasting connections

The Development of Management and Administration Strategies for The Excellence of Faculties of Education

The objectives of this research were to 1) study and analyze the management of education faculties in Thailand which are rated in the good level by Office of National Education Standards and Quality Assessment (Public Organization); 2) develop administration strategies for the excellence of Faculty of Education, Chulalongkorn University; and, 3) propose measures on how such administration strategies can be implemented for the excellence of Faculty of Education, Chulalongkorn University and the education faculties of other institutions.Data was collected on the administration of education faculties and analyzed using the SWOT analysis, the TOWS matrix technique, focus group and survey questionnaire on how the administration strategies for the excellence of Faculty of Education, Chulalongkorn University can be applied to the education faculties of other institutions. The research has found that the administration strategies for the excellence of education faculties are based on the vision that education faculties are the source of intellect and the leader in the areas of moral correctness and research capability. Their missions are 1) to produce intellectual, high-potential and morally correct graduates; 2) to develop creative educational innovations and provide academic services to the society; 3) to develop networks for production of graduates, research, academic services and preservation of arts and cultures; and, 4) to promote an administration model where authority is distributed down the chains of command and where the community is involved in the efficient administration. Their main objectives are 1) to produce quality education personnel; 2) to develop researches and provide the best possible academic services; 3) to develop a network of academic collaboration with other institutions; 4) to serve as an educational center for research and reference; 5) to have an excellent administration; and, 6) to have an accurate evaluation system. The strategies are 1) proactive strategy for the production of graduates; 2) strategy for network building; 3) strategy for the development of high quality output; 4) strategy for the development of the country’s wisdoms; 5) strategy for involved and transparent administration; and, 6) strategy for organizational evaluation.These administration strategies can be applied to the operation of other education faculties provided that they adapt them to suit the particulars of their circumstances

Aprendamos Física y Química mediante otras metodologías diferentes a la habitual

Treball Final de Màster Universitari en Professor/a d'Educació Secundària Obligatòria i Batxillerat, Formació Professional i Ensenyaments d'Idiomes. Codi: SAP119. Curs acadèmic: 2014-2015Se presenta a continuación el Trabajo Final del Máster (TFM) en Profesorado de Educación Secundaria Obligatoria y Bachillerato, Formación Profesional y Enseñanza de Idiomas en la modalidad 1 (Mejora Educativa) de la Universitat Jaume I. Este trabajo se ha llevado a cabo durante el período de prácticas en el I.E.S. Alfonso XIII (Vall d'Alba) con los alumnos de 4º ESO en la asignatura de Física y Química. Durante el período de prácticas se ha detectado una situación problemática en el aula que consiste en la baja participación, la desmotivación y el aburrimiento que tienen los alumnos respecto a las clases de Física y Química. La principal causa es la monotonía del uso de la metodología tradicional. Esta problemática se ha podido detectar mediante varios procedimientos como son la observación directa en las clases, la realización de una encuesta a los alumnos y el cuaderno de notas de la profesora. El objetivo principal sería aumentar el interés, la participación y la motivación de los alumnos y hacerles ver que las clases de Física y Química no siempre son aburridas. Intentando de este modo captar la atención del alumnado. Se plantea la mejora mediante la utilización de la metodología de investigación-acción (IA). Se ha propuesto un plan de acción que está basado en incorporar nuevas metodologías como son las técnicas de comunicación persuasiva (foto-palabra y videoforum), la tormenta de ideas (Brainstorming) y la técnica de aprendizaje cooperativo (Puzzle de Aronson). Además de incorporar estas metodologías, se hace el uso de las Tecnologías de la Información y la Comunicación (TIC) mediante la utilización de un programa de simulaciones y el uso de la técnica de participación activa (prácticas en el laboratorio químico). Hay que tener en cuenta que en el uso de las TIC y en la realización de las prácticas también sirven para diversificar los espacios porque además de la utilización del aula ordinaria se hace uso del aula de informática y del laboratorio químico. Tras la implementación del proyecto de mejora y haberla observado de forma triangulada (en cuanto a personas, momentos y técnicas) se puede concluir que esta nueva forma de trabajar ha sido efectiva ya que se ha conseguido aumentar el interés, la participación y la motivación de los alumnos

Synthesis Gas Production with Gasification Technology from Municipal Solid Waste

This study aims to develop, test performance, and evaluate the environmental pollution of garbage fuel with gasification technology. Heat conduction from municipal solid waste (MSW) burning from the gasification process was studied to dispose of solid waste and produce energy for communities. There were four types of solid waste in the total amount of 5 kg (including 0.5 kg of charcoal and firewood, 1.5 kg of paper, 2.0 kg of leaf litter, 0.5 kg of plastic, and 0.5 kg of others) with 2 tested ranges of average humidity: 10–20% and 50–55%. It was found that all waste could be converted for gas production with different gas amounts. From the experiment, dried MSW with 10–15% moisture content produced synthesis gas compositions (mole percent) that were H2, CO2, N2, O2, and CH4 at 1.9–2.4, 1.8–3.2, 56.5–60.2, 3.4–4.6, and 1.2–1.6, respectively. When fuel gas composition at the equivalent ratio between 0.2–0.34 was obtained from the MSW burning test with 10–15% average humidity, MSW burning in various equivalent ratios resulted in different amounts of synthesis gas. In addition, the optimal amounts of CH4 and the heating value of the gas were in the equivalent ratio of 0.28, and the highest production efficiency of synthetic gas (ηg) was 33.46%

On Providing Survivable QoS Services in the Next Generation Internet”, supported in part by NSF grant NCR 9506652 and DARPA under agreement No

Ahfrucf- In this paper we present a comparative study of two schemes to provide sunhability for guaranteed QoS connections in a possible Next Generation Internet network architecture. In the first scheme a QoS connection is provided standby backup resources on a disjoint path by reserving resources on both the working and backup path. In order to reduce the amount of backup resources required a method for sharing backup resources when the working connections have disjoint routes has been included. In the second scheme a dynamic search for restoration resources is conducted over a preplanned set of alternate paths upon notification of a failure. A simulation based performance study shows that the first scheme results in much higher connection blocking under normal operations, slightly faster restoration times, and longer transient congestion times after fault recovery due to non-optimal backup routing. I. INTRODUCTIO.

Floresorchestia kongsemae sp. n. a new species (Crustacea: Amphipoda: Talitridae) from Kasetsart University, Bangkok, Thailand

The genus Floresorchestia (Bousfield, 1984) is widely distributed in terrestrial and marine coastal habitats. It has been found from coastal South Africa through to the Indo-Pacific region and the Caribbean Sea in Central America. Two species of Floresorchestia have been reported in Thailand, Floresorchestia boonyanusithii Wongkamhaeng et al. (2016) and Floresorchestia buraphana Wongkamhaeng et al. (2016). This work reports on a new species of Floresorchestia found at Kasetsart University in a human-made pond and neighbouring areas.Classification of the new species was achieved by considering the left mandible 5-dentate; gnathopod 2 posterior margin merus carpus and propodus covered in palmate setae, palm reaching about 33% along posterior margin; uropod 3 peduncle with three robust setae; telson dorsal midline half the length of its breadth and four robust setae per lobe. The breeding season, distribution, and tentative migration are also discussed