Urban structure in 17&18th century Scandinavia: The emergence of grids in Stockholm, Oslo and Copenhagen

Exploration of the emergence of grids in Scandinavia, by gathering, compiling and comparing relevant information and supply a new broader understanding in the topic.

Modeling and Stability Analysis of Radial and Zonal Architectures of a Bipolar DC Ferry Ship

Electrification of ships is one of the hot topics in the marine industry. This is due to the stringent guidelines by the International Maritime Organisation (IMO) for curbing the green house gas emissions from the marine sector. In this paper, the state-space modeling approach is used to model bipolar dc grids on ships. A ferry is used as a...

Reconfigurable DC Links for Restructuring Existing Medium Voltage AC Distribution Grids

While the scientific community recognizes the benefits of DC power transfer, the distribution network operators point out the practical and economic constraints in refurbishing the existing AC network at a medium-voltage level. Some apprehensions like reliability, cost of ownership, and safety in adopting a universal DC distribution may merit...

Wind-induced sound on buildings and structures

Wind flow around buildings and structures has led to annoying noise levels at several occasions, especially in cases where tonal sound was produced. The human hearing is equipped to distinguish tonal or pulsating sound from random noise patterns, causing tonal or pulsating sound to be perceived as more annoying. Tonality is often caused by the...

Adding Cycle Scavenging Support to the Koala Grid Resource Manager

Cycle scavenging (CS) is the process of using otherwise idle computational resources to provide large, aggregate, amounts of computational power. It is the core principle of so-called desktop grids and volunteer computing, which use the idle cycles of desktop computers to do computations. However, resources in a multicluster grid likewise may...

The design and implementation of the KOALA grid resource management system

Grid computing is an emerging form of distributed computing, distinguished from traditional forms by its focus on large-scale, multi-organizational resource sharing and innovative applications. To harness shared resources across multiple organizations, and at the same time to deal with the challenges of grid resource management and of deploying...