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Objectives To determine the causes and predictors of mortality in systemic sclerosis (SSc). Methods Patients with SSc (n=5860) fulfilling the American College of Rheumatology criteria and prospectively followed in the EULAR Scleroderma Trials and Research (EUSTAR) cohort were analysed. EUSTAR centres completed a structured questionnaire on cause of death and comorbidities. Kaplan-Meier and Cox pro
A low-power high linearity CMOS G(m)-C channel select filter for WLAN/WiMax receivers in 90-nm CMOS technology is presented. To reduce power consumption a biquad cell with simple architecture and few devices is used. A simple but efficient technique is also used to improve the linearity of the filter without increasing its power consumption. The cutoff frequency of the sixth order Butterworth low-
Beamforming is an important feature of 60 GHz communications. We present an analysis of the influence of beamforming in indoor ultrawideband radio channels measured in the mm-wave 60 GHz band. The performance of narrowband and wideband direction-based beamformers is investigated in terms of improving channel metrics such as the delay spread, excess delay, and the signal-to-noise ratio (SNR). The p
This work studies the design of linear precoder codebooks for N-r x N-t MIMO channels with MMSE detection at the receiver. A natural split of precoder-design is unitary precoding and non-unitary precoding. Unitary precoding is only performing rotation of the data in a way beneficial for the channel. Non-unitary precoding additionally also uses power-loading to further improve the performance. Some
Malignant fibrous histiocytoma (MFH) and fibrosarcoma (FS) of bone are rare malignant tumours and contentious entities. Sixty seven cases labelled as bone MFH (57) and bone FS (10) were retrieved from five bone tumour referral centres and reviewed to determine whether recent advances allowed for reclassification and identification of histological subgroups with distinct clinical behaviour. A panel
Det har skrivits mycket om Karen Blixen genom åren, både av danska, svenska och engelsktalande författare. Hennes liv och författarskap har fascinerat många, så även mig. I min uppsats kommer jag att ta fasta på några frågeställningar med anknytning till Den afrikanske farm. Ett syfte är att belysa genreproblematiken, och svårigheten att sätta in Den afrikanske farm i något av de vedertagna genre
Populärvetenskaplig sammanfattning: Mer än två miljarder människor, mestadels i utvecklingsländer, saknar tillgång till moderna energikällor eller elektricitet. Behovet av rena, effektiva, pålitliga och ekonomiskt överkomliga energitjänster är en viktig fråga i utvecklingsländer, särskilt för landsbygden, där merparten av befolkningen bor. Förnyelsebara energikällor i form av småskaliga vattenkrafOver 2 billion people, mostly in developing countries, have no access to modern fuels or electricity. The necessity of clean, efficient, reliable and affordable energy services is a crucial issue in developing countries, especially in the context of rural areas where the majority of the people lives. Renewable energy sources in shape of small-scale hydropower systems are a complement or alternativ
This bachelor thesis analyses the impact that development projects working with higher education and micro-credit have on youth’s empowerment processes. I have made a minor field study in Kenya and conducted 21 semi-structured respondent interviews with a group with higher education, a group that was provided with micro-credit and a group which was not provided with neither. The interviews were co
OBJECTIVES: To assess the risk of incident cardiovascular disease in patients with primary Sjögren's syndrome, overall and stratified by Ro/SSA and La/SSB autoantibody status.METHODS: A cohort of patients with primary Sjögren's syndrome in Sweden (n=960) and matched controls from the general population (n=9,035) were included, and data extracted from the National Patient Register to identify event
This paper presents a 16-lane, 16-bit complex application-specific instruction processor (ASIP) for baseband processing in massive multiple-input multiple-output (MIMO). The architecture utilizes a 3/4-way very large instruction word (VLIW) with highly efficient pre- and post-processing units specifically trimmed for massive MIMO requirements. Architecture optimizations include features like singl
Reliable wireless communication links are a critical but challenging aspect for high-speed railway (HSR). To develop and analyze such systems, accurate models for the propagation channel are required. The radio channel properties in HSR scenarios are different from those in cellular scenarios not only due to the high velocity, but also due to the special construction elements and the type of surro
We analyze the downlink of a massive multiuser multiple input, multiple output (MIMO) system where antenna units at the base station are connected in a daisy chain without a central processing unit and only possess local channel knowledge. For this setup, we develop and analyze a linear precoding algorithm for suppressing interuser interference. It is demonstrated that the algorithm is close to ze
Future internet-of-things systems need to be able to combine heterogeneous services and support weak connectivity. In this paper, we introduce ComPOS, a new domain-specific language for composing services in IoT systems. We show how Maria, a bird watcher, can use ComPOS to build a system that allows her to spy on birds in the garden while she is not at home. We demonstrate how ComPOS handles the u
The mineralo-sphere is an important micro habitat in terrestrial ecosystems. How different groups of microorganisms colonise mineral surfaces and whether the level of grassland land-use intensity (LUI) modifies this micro-habitat is not well known, however. We exposed mesh containers filled with pristine soil minerals (illite/goethite) mixed with 13C labelled root litter of Dactylis glomerata and
This thesis focuses on the terminal aspects of massive MIMO systems. Based on the degree of freedom a terminal have in a MaMi, different antenna configurations, transceiver topologies with associated transmission schemes, and the underlying algorithms are researched.The first studied topic concerns multiple-antenna terminals in a massive MIMO system for sub-6 GHz, operated at the center frequency
Data intense defined software is becoming more and more prevalent, especially with the advent of machine learning and artificial intelligence. With data intense systems comes both challenges – to continue to collect and maintain quality – and opportunities – open innovation by sharing with others.To understand challenges and opportunities with ODC, we ran 5 focus groups (4 in Lund and 1 in Kista)
With the inclusion of external software components in their software, vendors also need to identify and evaluate vulnerabilities in the components they use. A growing number of external components makes this process more time-consuming, as vendors need to evaluate the severity and applicability of published vulnerabilities. The CVSS score is used to rank the severity of a vulnerability, but in its
With the inclusion of external software components in their software, vendors also need to identify and evaluate vulnerabilities in the components they use.A growing number of external components makes this process more time-consuming, as vendors need to evaluate the severity and applicability of published vulnerabilities.The CVSS score is used to rank the severity of a vulnerability, but in its s
