Sökning: "Elektroteknik"
Visar resultat 36 - 40 av 5302 avhandlingar innehållade ordet Elektroteknik.
36. High resolution electrical characterization of III-V materials and devices
Sammanfattning : The continuing shrinkage of semiconductor devices towards nanoscale features and increased functionality has prompted a strong need for high-resolution characterization tools capable of mapping the electrical properties with nanoscale lateral resolution. In this regard, scanning capacitance microscopy (SCM) scanning spreading resistance microscopy (SSRM) and Kelvin probe force microscopy (KPFM) have emerged as powerful techniques. LÄS MER
37. Upconversion in Er doped silica : - characterization and modeling
Sammanfattning : Further increase of erbium concentrations in Er-doped amplifiers and lasers is needed for the design of efficient, reliable, compact and cost-effective components for telecommunications and other photonic applications. However, this is hindered by Er concentration dependent loss mechanism known as upconversion. LÄS MER
38. The network performance assessment model : a new framework of regulating the electricity network companies
Sammanfattning : When the Swedish electricity market was re-regulated in 1996 the trading with electricity was exposed to competition and the net service henceforth should be comprised by a monopoly comprised by a regulation. The regulation was based on a review of the costs of the network companies. No attention were paid to if the network was efficient. LÄS MER
39. Demand responsive resource management for cellular networks : link asymmetry, pricing and multihopping
Sammanfattning : Economic affordability of services and infrastructures has rapidly become one of the key issues in the evaluation and design of wireless access systems. The provisioning of high data rates, at an ``affordable'' price, constitutes a serious challenge to the structure and management of current and future wireless networks. LÄS MER
40. Grey-box Identification of Distributed Parameter Systems
Sammanfattning : This thesis considers the problem of making dynamic models for industrial processes by combining physical modelling with experimental data. The focus is on distributed parameter systems, that is, systems for which the model structure involves partial differential equations (PDE). Distributed parameter systems are important in many applications, e. LÄS MER
