It has previously been shown that ensembles of terminated protograph-based low-density parity-check (LDPC) convolutional codes have a typical minimum distance that grows linearly with block length and that they are capable of achieving capacity approaching iterative decoding thresholds on the binary erasure channel (BEC). In this paper, we review a recent result that the dramatic threshold improve

A 26 GHz quadrature voltage controlled oscillator designed in a 0.13-um CMOS process is presented. It consists of two differential oscillators coupled to oscillate in quadrature through transistors and mutual inductance between the source nodes. The oscillator measures a frequency tuning range of 3.1%, a worst case phase noise of -96 dBc/Hz at 1 MHz offset over the tuning range at a 1.35V supply

Popular Abstract in Swedish Med utgångspunkt från svensk-italienska ungdomars erfarenhet av att växa upp med två kulturer, vill författaren, utifrån ett pedagogiskt perspektiv, ge en beskrivning av innebörden i tvärkulturell fostran. Tvärkulturell fostran i den här studien innebär fostran med betydande inslag från minst två klart skilda kulturtraditioner, den svenska och den italienska. Den empiriThe present study dealt with what occurs in a social-cultural rearing-process when the parents derive from two different cultural traditions. It is a qualitative case study, with an ethnographically inspired approach, which considers processes rather than outcome, context rather than any specific variable and discovery rather than confirmation. The empirical data consist of interviews made with 41

Drick kranvattens syfte är att öka ungdomars medvetenhet om kranvattnets värde. Projektet innehåller kranvattenautomater till skolorna och färdiga lektioner på drickkranvatten.se. Utvärderingen visar på en positiv inställning hos lärare och elever till projektet och till frågeställningar om vatten.

Parts of large spiral galaxies, such as the Milky Way and Andromeda, are believed to have formed from the accretion of several smaller galaxies. Remnants of this chaotic merging era, such as dwarf spheroidal (dSph) galaxies, are visible in the outskirts of large galaxies. dSph galaxies are characterized by their low luminosity, low surface brightness and high fraction of dark matter. Determining t

The way in which the cortical cytoskeleton associates to the plasma membrane (PM) must be elucidated to understand the structural dynamics of many processes in the plant cell. In the present study, isolated cauliflower (Brassica oleracea L.) PM vesicles were used to characterize membrane/cytoskeleton interactions. Both actin and tubulin were shown to copurify with PM vesicles and this copurificati

This paper presents a novel method to improve the performance of sub-threshold (sub-V-T) gates in 65-nm CMOS technology. Faster transistors with a lower threshold voltage are introduced in the weaker network of a gate. It is shown that the employed method significantly enhances the reliability and performance of the gate, with an additive advantage of a lower area cost compared to traditional tran

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Sveriges frihandelsavtal med EEC. En genomgång av avtalens mål medel och administration. Hur ska bestämmelserna tolkas mot bakgrund av bl.a. Wienkonventionen om Traktaträtten. Praktiska implikationer granskas med särskild tonvikt på avtalets konkurrensregler liksom hur dessa är kopplade till utvecklingen av konkurrensrätten i den Europeiska Ekonomiska Gemenskapen. Kan avtalet förväntas få en direk

"Chloride penetration into concrete is one of the most decisive processes for durability and service-life of concrete structures. Design for durability of new structures, and maintenance and repair of existing structures, requires a correct understanding and quantification of the processes involved. Throughout the world, much work has been done and is going on, but still we cannot predict the pe

This work consisted of the application of X-ray diffraction methods to the study of ultrafast phenomena in various materials. Since the X-ray pulses generated from the bending magnet at the MAX II ring, where most of the experimental work was conducted, have a duration of the order of 300 ps, they can not be used directly as probe pulses in experiments where higher temporal resolution is required.

The embryo has traditionally been considered to completely rely upon parental strategies to prevent threats to survival posed by predators and pathogens, such as fungi. However, recent evidence suggests that embryos may have hitherto neglected abilities to counter pathogens. Using artificial fertilization, we show that among-family variation in the number of Saprolegnia-infected eggs and embryos i

In this thesis computationally intensive methods are used to estimate models and to make inference for large, spatio-temporal data sets. The thesis is divided into two parts: the first two papers are concerned with video analysis, while the last three papers model and investigate environmental data from the Sahel area in northern Africa. In the first part of the thesis, mixture models are used to

Popular Abstract in Swedish Informationsteknologin utvecklas i allt snabbare takt. Däremot tycks utvecklingen ske långsammare när det gäller de modeller, metaforer och metoder som används för att beskriva och förstå hur information sprids och hanteras i organisationer, i kommuner och i samhället i stort. Använder vi egentligen IT på ett effektivt sätt i det dagliga arbetet? I den här avhandlingen New information technology is developing faster than the models, metaphors and methods in use for conceptualizing the sharing and managing of information in organizations, in communities and in society in general. The way we utilize information technology today does not seem to succeed in supporting the everyday work practices through which organizations accomplish their work. In this Ph.D. disser

Popular Abstract in Swedish Operationer för att dränera vätska från hjärnans hålrum för att sänka ett högt tryck i skallen är den mest förekommande operationstypen vid neurokirurgiska kliniken i Lund. Orsaken till det höga trycket är oftast hydrocefalus (vattenskalle p.g.a. för mycket hjärnvätska), antingen som följd av en medfödd missbildning eller som följd av en förvärvad åkomma. Ytterligare orIntroduction: Shunting systems are implanted for draining cerebrospinal fluid to treat hydrocephalus, intracranial cysts, and idiopathic intracranial hypertension. Most shunt systems include a valve which regulates drainage. A differential pressure valve opens when intracranial pressure exceeds the valve’s opening pressure. The difficulty with these valves is selecting and predicting the most sui