A collection of problems with some solutions are added to help the undergraduate students of the Mechanical Engineering streams. The focus has been placed on helping the emerging engineer to face the exams and real world problems. Most texts contain theorems and standard exercises which are supposed to be memorized and repeated in the exams, which is the case in most large Universities especially in the Third World. It is hoped that the present work would act as a Bridge to further development.
Na Tecnologia Moderna onde o crescimento das redes est aumentando rapidamente. A crescente necessidade de distribuir aplica es atrav s de m ltiplas redes com alta capacidade e n s intermedi rios de comuta o e redes de alto desempenho. O termo routing usado para transferir um pacote de um dispositivo e envi -lo atrav s de uma rede para outro dispositivo em uma rede diferente. De outra forma, como o roteador se comunica entre si, espalhando informa es. Os protocolos de roteamento desempenham um papel importante na infra-estrutura de redes de computadores, pois s o usados para transmitir pacotes atrav s de uma rede, foi dado um cuidado especial aos protocolos de roteamento com restri es de seguran a incorporadas. Existem v rios tipos de protocolos de roteamento sendo amplamente utilizados. Protocolo de roteamento aprimorado de gateway interior (EIGRP), Protocolo de informa o de roteamento (RIP) e OSPF (Open Shortest Path First). Neste projeto, n s analisamos e simulamos uma proposta de Rede Local com fio usando diferentes protocolos de roteamento. Portanto a configura o desses diferentes protocolos de roteamento feita usando o simulador de rastreamento de pacotes CISCO.
In semiconductors, two basic properties namely energy gap and refractive index mostly determine their optical and electronic operation. Refractive index of a material usually decreases with an increase in energy gap fostering an underlying relationship between these two fundamental quantities. There have been many attempts to correlate these two quantities with a suitable empirical or semi-empirical relation. The refractive index and energy gap of semiconductors represent two fundamental physical aspects thatcharacterize their optical and electronic properties. In the present work, I have investigated some of the optical and electronic properties of II-VI group semiconductors.The II-VI compounds are being extensively used in infrared detectors, ultra high speed bipolar transistors, optical fiber communications and advanced microwave devices. Thesematerials possess the appropriate direct band gap to produce light emitting diodes and lasers from blue to red wavelength.