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Bone integration of an injectable calcium phosphate based bone substitute

The bone formation and bone integration in calcium phosphate (CaP) and CaP with 20% calcium sulfate (CaS) were investigated. In the study, six adult, loop-eared rabbits were used and bone harvest chambers were implanted bilaterally in the proximal tibiae. It was found that the front of bone formation follows closely the front of material resorption without interposition of fibrous tissue. The resu

Optimal intra-symbol spectral compensation for multicarrier modulation

Spectral compensation aims at maximising the throughput of a multicarrier transmission system under a given power spectral density (PSD) constraint. A set of carefully chosen tones, the so called compensation tones, is modulated with a linear combination of the data transmitted over the complementary set of tones. The compensation tones support shaping of the transmit PSD so that the overall trans

Extending the Occupancy Grid Concept for Low-Cost Sensor Based SLAM

The simultaneous localization and mapping problem is approached by using an ultrasound sensor and wheel encoders. To be able to account for the low precision inherent in ultrasound sensors, the occupancy grid notion is extended. The extension takes into consideration with which angle the sensor is pointing, to compensate for the issue that an object is not necessarily detectable from all position

Stat, kris och demokrati : Lapporörelsens inflytande i Finland 1929-1932

This dissertation discusses how actors within the state act during a crisis of democracy. This issue is examined from two angles: 1 . How can actors within the state act during democratic crises? 2. How have actors within the state acted during democratic crises? The structure of this book is guided by both of these issues. In the first part of the book, an analytical model is developed. With the

Evaluation of soft magnetic mouldable composite core motors

The objective of this paper is to evaluate a single-phase claw pole machine where the magnetic core is made of a soft magnetic mouldable composite material ((SMC)-C-2). (SMC)-C-2 has low permeability but also very low remagnetization losses, which makes this kind of material very suitable for high frequency applications. Therefore, the high speed characteristics of the single-phase claw-pole machi

Defining Decisions Points to Avoid Escalation in Construction Projects

Conflicts between project stakeholders can stop or damage a construction project as well as technical problems. It is not uncommon that projects are stopped or changed late in the process with the effect that large amounts of already made investments becomes obsolete. One explanation of this phenomena is the escalation of project decisions, where project managers persist with a course of actions l