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The determination of the CP nature of the Higgs coupling to top quarks is addressed in this paper, using tt-h events produced in s=13 TeV proton-proton collisions at the LHC. Dileptonic final states are employed, with two oppositely charged leptons and four jets, corresponding to the decays t→bW+→b+ν, t-→b-W-→b--ν-, and h→bb-. Pure scalar (h=H), pure pseudoscalar (h=A), and CP-violating Higgs boso
Subband adaptive filters have been proposed to speed up the convergence and to lower the computational complexity of time domain adaptive filters. However, subband processing causes signal degradations due to aliasing effects and amplitude distortions. This problem is unavoidable due to further filtering operations in subbands. In this paper, the problem of aliasing effect and amplitude distortion
The aim of this paper is to explore the establishment of diplomatic representation as a measure of de facto recognition by other state units, and to explain its causes in the “long 19th century” (1817-1914). The premise of the paper is that, at least before the advent of broad-ranging legitimizing international organizations such as the League of Nations or the UN in the 20th century, sending a di
The problem of classifying short atrial fibrillatory segments in ambulatory ECG recordings as being either paroxysmal or persistent is addressed by investigating a robust approach to signal characterization. The method comprises preprocessing, estimation of the dominant atrial frequency for the purpose of controlling the subbands of a filter bank, and computation of the relative subband (harmonics
Deep metabarcoding offers an efficient and reproducible approach to biodiversity monitoring, but noisy data and incomplete reference databases challenge accurate diversity estimation and taxonomic annotation. Here, we introduce a novel algorithm, NEEAT, for removing spurious operational taxonomic units (OTUs) originating from nuclear-embedded mitochondrial DNA sequences (NUMTs) or sequencing error
Time-domain induced polarization (TDIP) data carry spectral information that can be used for petrophysical interpretation. At the same time, TDIP data can be collected in the field more efficiently than frequency-domain induced polarization (FDIP) data, thanks to the use of square-wave signals. However, TDIP field data are prone to noise, particularly strong near industrial installations and urban
We study dynamics in a network of interacting agents updating their binary states according to a time-varying threshold rule. Specifically, agents revise their state asynchronously by comparing the weighted average of the current states of their neighbors in the interaction network with possibly heterogeneous time-varying threshold values. Such thresholds are determined by an exogenous signal repr
Universitetslektor Kontaktinformation E-post: niklas_lars [dot] hallberg [at] fek [dot] lu [dot] seOrganisation Strategi Hämtställe: 10 WebbplatsNiklas Lars Hallbergs profil i Lunds universitets forskningsportalAndra roller Docent Strategi Publikationer Visar av publikationer. Sorterade efter år och sen titel. Filtrera efter typ AllaArtikel i vetenskaplig tidskriftBokDoktorsavhandling (monografi)K
https://www.ehl.lu.se/niklas-lars-hallberg - 2026-07-10
The room impulse response (RIR) is an important function describing how sound reflects and propagates in a room. The inverse problem of estimating the impulse response from source and measurement signals is often of interest in various audio applications, but can become ill-posed if there is not enough information. Using regularization, one can impose prior physicality assumptions to the estimator
BESLUT 2019-tt-04 Dnr V 201911904 I LUNDS UNIVERSITET Sektionen Juridik och dokumenthantering Avdelningen Dokumenthantering Asa Berglund, sektionschef Gallring av forskningshandlingar inom Lunds universitet Bakgrund Utgångspunkten ftir hanteringen av forskningshandlingar inom Lunds universitet är Riksarkvets ftjreskrifter och allmänna råd om gallring av handlingar i statliga myndigheters forskning
https://www.staff.lu.se/sites/staff.lu.se/files/gallring_av_forskningshandlingar_v_2019.1904.pdf - 2026-07-11
Popular Abstract in English Experiments, such as the Large Hadron Collider (LHC) in CERN, Switzerland, collide particles together at high energies, in the hope of probing the fundamental constituents and forces of nature. On the theoretical side, the Standard Model (SM) is currently the best description we have. It is a theory that encompasses the strong, weak and electromagnetic forces, although This thesis involves phenomenological models for describing high energy particle collisions. One class of these models, multiparton interactions (MPI), deals with the fact that when colliding two hadrons, it is possible for more than one pair of their constituents to interact. The other deals with parton showers, which are used to fill enhanced regions of phase space and give fully exclusive final
Crude oil is the most traded energy commodity in the world, and its price has a large impact on the everyday life of billions. Given the volatility of crude oil prices and its enormous effects on economies worldwide, there has been a growing demand for risk quantification and risk management for the market participants. The measurement known as Value-at-Risk (VaR) has become the industry standard
This paper is a comparative study of different approaches to using a Discrete Time Micro-structure model. By using the three filtering techniques Extended Kalman, Unscented Kalman and Bootstrap Particle, the hidden variables; excess demand and market liquidity, were estimated and used in an asset allocation strategy that invested in the asset when the excess demand as estimated as positive, due to
Susceptibility Weighted Imaging is an MRI- and post-processing technique that utilize the phase information from the MR signal to enhance the contrast in areas with different susceptibility than surrounding tissue in T2*-weighted images. This technique is becoming more and more important as a clinical tool. Susceptibility-weighted imaging has been commercialized by Siemens Healthcare under the acr
This work will first go through different definitions about what constitute a holding company. Thereafter the Swedish tax rules, relevant for the localisation of a holding company, will be examined. Subsequently different definitions will be discussed about what constitute a holding company. In that context the concept tax paradise will be discussed. In the next chapter those criterias will be dis
(Neuro)psychiatric diagnoses such as attention deficit hyperactivity disorder (ADHD) is a rapidly growing and globally increasing phenomenon, not least in different educational contexts such as in family and in school. Children and youths labelled as ADHD are challenging normative claims in terms of nurturing and education, whereas those labelled as ADHD are considered a (future) risk for society (Neuro)psychiatric diagnoses such as attention deficit hyperactivity disorder (ADHD) is a rapidly growing and globally increasing phenomenon, not least in different educational contexts such as in family and in school. Children and youths labelled as ADHD are challenging normative claims in terms of nurturing and education, whereas those labelled as ADHD are considered a (future) risk for society
Based on the experience of the author and analyses of citation frequences of papers published in various biological journals, the use of citation counts and journal Impact Factors as a measure of scientific quality is discussed. It is concluded that citation frequency differ not only among biological sub-disciplines such as ecology and taxonomy, but also among taxonomic papers on highly similar toBased on my experience and analyses of citation frequencies of papers published in various biological journals, I discuss the use of citation counts and journal Impact Factors as measures of scientific quality. I conclude that citation frequency differs not only among biological sub-disciplines such as ecology and taxonomy, but also among taxonomic papers on highly similar topics, and that these l
Business opportunities are a chance for a company to grow its activity and to further the aggregate welfare of the society as a whole. Corporate opportunities rules and their functional equivalents should enable companies to develop their business activities when directors discover those business opportunities. Companies need to be certain that they can legally appropriate those business opportuniBusiness opportunities are a chance for a company to grow its activity and to further the aggregate welfare of the society as a whole. Corporate opportunities rules and their functional equivalents should enable companies to develop their business activities when directors discover those business opportunities. Companies need to be certain that they can legally appropriate those business opportuni
