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Homogeneous Charge Compression Ignition (HCCI) is a promising but challenging combustion engine concept. The potential for good fuel economy and low emissions is high but the transient performance required for automotive applications presents a few problems still to be solved. The focus of this work is identification of the process dynamics. An ARX type model is fitted to input-output data. A meth
Homogeneous Charge Compression Ignition (HCCI) combustion lacks direct ignition timing control, instead the auto ignition depends on the operating condition. Since auto ignition of a homogeneous mixture is very sensitive to operating condition a fast combustion timing control is necessary for reliable operation, the ignition timing control design requiring appropriate models and system output vari
This paper offers a two-zone, physical, NOx model with low computational cost, implemented in C on an embedded system. The model is able to compute NOx-emission formation with high time resolution during an engine cycle. To do this the model takes cylinder pressure and injected fuel amount as inputs and produces NO concentration as output. The model as such is not new, nevertheless the physical ba
In this chapter, we argue that policy-making aiming to achieve environmentally sustainable transitions of the economy is in need of a solid empirical evidence base. Conventional measurement concepts used for example by the EU based on sector-classifications deliver highly biased pictures. We propose measurement concepts based on the use of green skills and human capital, validate key assumptions o
OBJECTIVES: The primary aim of this study was to describe the ultrasound features of various endometrial and other intracavitary pathologies in women without abnormal uterine bleeding (AUB) using the International Endometrial Tumor Analysis (IETA) terminology. The secondary aim was to compare our findings with published data on women with AUB. METHODS: This was a prospective observational study of
Aim: To investigate the predictive ability of the Bayley Scales of Infant and Toddler Development, Third Edition (Bayley-III) Motor Index, in children born extremely preterm (<27 gestational weeks) without cerebral palsy. Methods: Children from the EXPRESS study (all extremely preterm births in Sweden, 2004–2007) without neurosensory impairments assessed with Bayley-III at 2.5 years corrected age
We report on charge transport across self-assembled monolayers (SAMs) of short tau peptides by probing the electron tunneling rates and quantum mechanical simulation. We measured the electron tunneling rates across SAMs of carboxyl-terminated linker molecules (C6H12O2S) and short cis-tau (CT) and trans-tau (TT) peptides, supported on template-stripped gold (AuTS) bottom electrode, with Eutectic Ga
The rapidly growing interest in photocatalytic systems for direct solar fuel production such as hydrogen generation from water splitting is grounded in the unique opportunity to achieve charge separation in molecular systems provided by electron transfer processes. In general, both photoinduced and catalytic processes involve complicated dynamics that depend on both structural and electronic effec
Soot emissions from diesel internal combustion engines are strictly regulated nowadays. Laser extinction measurement (LEM) and natural luminosity (NL) of sooty flames are commonly applied to study soot. LEM measures soot along the laser beam path and it can probe soot regardless of temperature. NL integrates the whole field of view and relies on soot temperature. In this work, a comparison of simu
Quantum chemical calculations for two TiO2 nanoparticle cluster models (rutile–(TiO2)n with n = 20, and anatase–(TiO2)n with n = 92), selected to represent different nanoparticle size regimes, are used to elucidate structural influences on the electronic properties. Structural and electronic properties were obtained using a variety of computational methods and structure optimisation schemes, inclu
During the normal periods in absence of crisis, diversified firms without any excess cash as a whole, outperformed focused firms holding excess cash. During the Financial Crisis from mid 2007 to early 2009 on the other hand, focused firms holding excess cash outperformed less diversified firms and diversified firms as a group, where diversified firms with more than 2 different SIC codes performed
Universitetslektor Kontaktinformation E-post: karol [dot] nowak [at] jur [dot] lu [dot] se Telefon: +46 46 222 12 35Organisation Juridiska institutionen Rumsnummer: 329 Hämtställe: 56 WebbplatsKarol Nowaks profil i Lunds universitets forskningsportalAndra roller Forskare Mänskliga rättigheter Forskare Folkrätt Affilierad forskare Centrum för beredskap och resiliens (LUPREP) Publikationer Visar av
https://www.jur.lu.se/karol-nowak - 2026-04-30
Autoignition of a homogeneous mixture is very sensitive to operating conditions, therefore fast control is necessary for reliable operation. There exists several means to control the combustion phasing of an Homogeneous Charge Compression Ignition (HCCI) engine, but most of the presented controlled HCCI result has been performed with single-input single-output controllers. In order to fully operat
Studies have shown positive health outcomes from shared reading (SR) for various patient groups. In this article, we explore whether this applies to doctors as well by studying the dynamics of SR sessions and a subsequent participant focus group. Four SR sessions, with one short story and one or two poems each, were held with medical interns working at Skåne University Hospital, Sweden. A reflexiv
Adato användarmanual Sida 0. Miljödata AB Ronnebygatan 46 0455 – 33 35 30 BG: 5504-4325 Org. nr: 556324-4036 371 33 Karlskrona miljodata.se Författare: Tova Westin PG: 17141-3 Adato användarmanual Version 3.7.3 Senast uppdaterad: 2025-12-03 Adato användarmanual Sida 1. Miljödata AB Ronnebygatan 46 0455 – 33 35 30 BG: 5504-4325 Org. nr: 556324-4036 371 33 Karlskrona miljodata.se Författare: Tova We
https://www.hr-webben.lu.se/sites/hr-webben.lu.se/files/2026-02/Adato%203.7.3%20anv%C3%A4ndarmanual%20(1).pdf - 2026-05-01
