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Extreme Hardness Achievements in Binderless Cubic Boron Nitride Tools

Binderless cubic boron nitride tools are available in two forms: single phase cBN and dual phase wBN/cBN (w is wurtzite phase). In this work, a novel heat treatment process involving surface heating using a continuous wave CO2 laser followed by tandem waterjet quenching of the laser beam path was applied to increase the hardness of both forms of boron nitride. Stress-induced phase transitions and

Optimal intra-symbol transmit windowing for multicarrier modulation

Windowing of the transmitted blocks in a multicarrier system yields an improved spectral containment of the resulting basis functions, which allows larger transmit power compared to no windowing while fulfilling the power spectral density (PSD) requirements. Most transmit window designs proposed so far aim at maximising the mainlobe energy and thus the spectral containment of the transmit basis fu

On sensory feedback in hand prostheses

Popular Abstract in Swedish Denna avhandling behandlar ämnet känselåterkoppling i handproteser. Att mista sin hand är en traumatisk upplevelse och den som har mist sin hand förlorar både känsel och motorik. En rudimentär greppfunktion kan återskapas genom att använda en handprotes. Nya och avancerade proteser som kontrolleras med hjälp av muskelsignaler finns numera på marknaden och dessa myoelektAmputation of the hand implies the loss of the ability to grasp and the ability to "feel". The grasping function can be primitively restored using an active prosthesis. Multi­articulating electrically powered hands have recently made their way to the market and these hands provide enhanced grasping and gripping capabilities. However, these hands provide no direct and conscious sensory feedback to

Att styra ett hållbart byggande - En definition av och en styrmodell för ett hållbart byggande

A large part of the Earth’s turnover of resources is associated with buildings and building construction. There is therefore a complex relationship to be taken into consideration when realizing construction projects, since economic and social aspects also affect individual people. In order to gain an overall perspective on this relationship during the construction process, one solution is to adapt