A speech data packet loss concealment algorithm based on pitch period repetition is presented and a novel low complexity method to refine a pitch period estimate is introduced. Objective performance measurements show that this pitch refinement improves the quality of packet loss concealment. Hardware-software codesign techniques have been investigated to implement the algorithm. Using a coprocesso

Popular Abstract in Swedish I denna avhandling undersöktes förekomsten och regleringen av neuropeptiden PACAP (pituitary adenylate cyclase-activating polypeptide) i det sensoriska nervsystemet hos råtta och mus och hur de normala nivåerna av PACAP ändrades vid olika betingelser som t.ex. nervavskärning och lokal inflammation. Dessutom undersöktes PACAPs roll vid smärta genom att studera om smärtsvThe data presented in this thesis deal with the neuropeptide pituitary adenylate cyclase-activating polypeptide (PACAP) in adult sensory neurons. We have used different injury and pain models to determine the involvement of PACAP during such conditions. The role of neurotrophins for PACAP expression was also investigated. PACAP is one of the excitatory neuropeptides expressed in small sized DRG ne

Adaptive antenna systems (AAS’s) are traditionally of interest only in radar and sonar applications. However, since the onset of the explosive growth in demand for wireless communications during the 1990’s, researchers are giving increasing attention to the use of AAS technology to overcome practical challenges in providing the service. The main benefit of the technology lies in its ability to exp

Popular Abstract in Swedish Infektioner i blodbanan orsakade av Staphylococcus aureus (S. aureus bakteriemi) kompliceras ofta av nedslag i leder, skelett, hjärtklaffar eller inre organ. Dessa sekundära infektioner är inte alltid lätta att upptäcka, men de fordrar förlängd antibiotikabehandling och ibland även operativa ingrepp för att läka ut. S. aureus bakteriemi diagnosticeras oftast genom att mThe diagnosis of S. aureus infections is most often based on culture of the organism from various body sites. However, cultures could be false negative due to e.g. previous antibiotic therapy, and in some situations cultures are difficult to obtain. Antibody assays against various S. aureus antigens have been proposed as a way to diagnose S. aureus bacteremia, as well as to distinguish between unc

The first ever direct Sanskrit-to-Swedish translation of the twelve earliest Upaniṣads, accompanied by a scholarly introduction and extensive notes referencing classical commentaries.

Inventory control systems used in practice are quite often modeling the lead-time demand by a normal distribution. This may result in considerable errors when the real demand is low and discrete. For such demand, it is usually better to use a discrete demand distribution. However, this will increase the computational effort. A natural question is under what circumstances a normal approximation is

There are several reasons to reconsider present urban water and wastewater policy including limitations of a conventional sanitary system, better understanding of nature and its principles gained during last decades, and the goal of society to achieve sustainable development. In this paper principles of new designs of alternative sanitation systems are illustrated, examples of technical and non-te

In this paper we explore internationalization and export growth over time in a sample of 135 small manufacturing firms. By using concepts and arguments from literature on international business and small firms, the paper identifies six situational, or contingency, factors that are expected to influence the international activities of small firms. Our results show that a dynamic and fast-changing e

This book provides the Swedish-reading audience with the first commentary on the apocryphal Gospel of Thomas. Bo Frid has translated the Coptic text into Swedish; Jesper Svartvik has written an introduction (pp. 11-42) and an extensive commentary on each and one of the 114 logia (pp. 121-301).

Popular Abstract in Swedish Blodåderförkalkning och dess komplikationer såsom hjärn- och hjärtinfarkt är bland de vanligaste orsakerna till sjukdom och död i vårt samhälle. Flera faktorer är av betydelse för uppkomsten av åderförkalkning. I denna avhandling presenteras studier av substanser frisatta från kärlendothelet (blodkärlväggarnas insida) respektive från vita blodkroppar, och dessa substansThis study was undertaken to evaluate relationships between endothelial function (assessed as mediators of endothelium-derived vasoactive factors such as nitric oxide [NO], prostacyclin [PGI2] and endothelin [ET-1] ), and risk factors for atherosclerosis, as well as to study possible relationships between endothelial function and leukocyte activation (indicated by measurements of leukocyte-derived

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