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Low-complexity ultrawideband transceiver with compatibility to multiband-OFDM

We present a low-complexity transceiver for ultrawideband communications with moderate (1-15 Mbit/s) data rate. This transceiver is based on time-frequency-interleaved frequency-shift-keying (TF-FSK), and shows a high degree of compatibility with multiband-OFDM, the currently envisioned standard for high-data-rate (>100 Mbit/s) UWB communications. We show that for dual-mode devices, the major part

Entrepreneurship in the Age of Big Data: A Researcher's Guide to Data Mining, Inference and Prediction

The bottleneck of Big Data today is the analysis of large amounts of information, including data mining, inference and prediction. Entrepreneurship researchers who want to take advantage of Big Data, need tools and workflows to find important trends and patterns within massive data sets, and understand "what the data tell us." Here, we apply gradient boosting to big, register-based data, and estab

Multi-level coding/modulation using LDPC convolutional codes

In this paper, we propose a novel multilevel coding scheme that employs low-density parity-check convolutional (LDPCC) codes. A combined decoding/ demodulation scheme is also considered. Unlike previous work on multilevel coding, the proposed scheme employs a single code with some structure that allows it to benet from the use of multilevel mapping. The proposed scheme can be seen as a form of bit

Den komplexa vården - om komplexitet och komplexa processer inom hälso- och sjukvården

Hälso- och sjukvården står inför en mängd förändringar och en allt mer komplex och utmanande situation, världen över. Förändringarna sker tvärsektoriellt och på alla plan: Ökad kundfokusering, nya rön om styrning och ledning, forskningsframsteg, ny teknik, ny vårdpraxis, öppna kvalitetsjämförelser, kompetensspecialisering och maktförskjutningar. Förändringarna sker inte bara lokalt utan även regio

Sträck ut en hand till eleverna i stället

Det är viktigt att förstå att de insatser som görs för att förbättra skolan alltid baseras på både kunskapssyn och människosyn. Att kräva att alla elever får stöd i tid och har engagerade och kunniga lärare visar på en samtida kunskaps- och människosyn, grundad i forskning om lärande och barns utveckling.

Plasma homocysteine, apolipoprotein E status and vascular disease in elderly patients with mental illness.

Abstract Background: Total plasma homocysteine (tHcy) concentration is increased in elderly patients with mental illness. Also, patients with vascular disease have significantly higher plasma tHcy concentration compared with patients without vascular disease. Apolipoprotein E (apoE) status is associated with cardiovascular disease and a major genetic risk factor is inheritance of the e4 allele. In