Lønnsomhetsanalyse av torsketrålere: Hva er lønnsomhetsdriverne til norske torsketrålere?

Studien har som formål å undersøke hvilke lønnsomhetsdrivere som påvirker norske torsketrålere. Fartøygruppen torsketrål er fartøygruppen som oppnår høyest lønnsomhet i fiskeflåten i Norge. Vi skal undersøke om det er forskjeller i oppnådd lønnsomhet mellom de ulike fartøyene. Studien tar for seg variablene: alder på fartøy og eierskap. Vi undersøker om variablene er lønnsomhetsdriverne for oppnådd lønnsomhet. For å svare på problemstillingen og forskningsspørsmålene har vi hentet inn regnskapstall fra Brønnøysundregisteret og fangsttall fra Fiskeridirektoratet. Studien er en tidsserieundersøkelse som undersøker lønnsomheten i perioden 2015 til 2019. Utvalget består av 27 fartøy som utgjør 75% av populasjonen. Utvalget i studien innehar 90% av torskekvoten i fartøygruppen torsketrål. Innledende analyser viser at det er stor variasjon i avkastningen og den operasjonelle driften til fartøyene. Videre analyser avdekker at det er to variabler som skiller utvalget er todelt eierskap og ulik alder på fartøyene. I videre analyser undersøker vi om alder på fartøy og eierskap er lønnsomhetsdrivere som kan forklare forskjellene i oppnådd lønnsomhet. Gruppen med eldre fartøy oppnår dobbelt så høy avkastning på sysselsatt kapital som gruppen med nyere fartøy. Videre analyser avdekker at disse forskjellene skyldes måleutfordringer i regnskapet mellom eiendeler med ulik alder. Vi videreutviklet lønnsomhetsmålene og fant ut at ulik bokført verdi og prisstigning forklarte forskjellen mellom de to gruppene. Analysen viste at nyere fartøy ikke oppnådde høyere lønnsomhet enn eldre fartøy. Analysen viste videre at nyere fartøy ikke hadde bedre operasjonell drift enn eldre fartøy, selv om de har større fangsteffektivitet. Analysen av eierskap viser at forskjellen i oppnådd rentabilitet på sysselsatt kapital mellom fartøy eid av fiskeindustrien og fartøy eid av aktive fiskere blir forklart av ulik kapitalstruktur. Det er ikke forskjeller i den operasjonelle driften mellom de to gruppene med fartøy. Vi har benyttet Excel versjon 2109 for å analysere datamaterialet og for å illustrere resultatene

Violence after discharge from forensic units in the safe pilot study : a prospective study with matched pair design

Objective: This paper reports on a prospective naturalistic study of violent recidivism after discharge from forensic mental health. Main aims were to find predictors of violence and to test the feasibility of a matched pair design for this purpose. Methods: Patients from the Safe pilot project (n=18) and a group of controls (n=18) were matched on 10 variables, such as diagnosis, seriousness of violence, setting after discharge, and risk management plans. All the Safe pilot patients had been through repeated measurement of dynamic risk factors of violence the year before discharge to develop efficient risk management plans for use after discharge. We wanted to test whether violent recidivism during follow-up would be lower and less serious in the Safe pilot group. Results: We found no significant between-group difference concerning number of patients with violent recidivism. However, the Safe pilot patients had significantly lower rates of violence and fewer severe violent episodes. In the control group, there was a significant association between a high number of risk management plans and high rates of violence. There was a statistical trend for the opposite association in the Safe pilot group. Conclusion: We discuss this in terms of a possible gap between the development and implementation of plans. Keywords: forensic mental health, discharge, violence, matched pairpublishedVersio

Community-driven dispersal in an individual-based predator-prey model

We present a spatial, individual-based predator-prey model in which dispersal is dependent on the local community. We determine species suitability to the biotic conditions of their local environment through a time and space varying fitness measure. Dispersal of individuals to nearby communities occurs whenever their fitness falls below a predefined tolerance threshold. The spatiotemporal dynamics of the model is described in terms of this threshold. We compare this dynamics with the one obtained through density-independent dispersal and find marked differences. In the community-driven scenario, the spatial correlations in the population density do not vary in a linear fashion as we increase the tolerance threshold. Instead we find the system to cross different dynamical regimes as the threshold is raised. Spatial patterns evolve from disordered, to scale-free complex patterns, to finally becoming well-organized domains. This model therefore predicts that natural populations, the dispersal strategies of which are likely to be influenced by their local environment, might be subject to complex spatiotemporal dynamics.Comment: 43 pages, 7 figures, vocabulary modifications, discussion expanded, references added, Ecological Complexity accepte

Differential branching fraction and angular analysis of the decay B0→K∗0μ+μ−

The angular distribution and differential branching fraction of the decay B 0→ K ∗0 μ + μ − are studied using a data sample, collected by the LHCb experiment in pp collisions at s√=7 TeV, corresponding to an integrated luminosity of 1.0 fb−1. Several angular observables are measured in bins of the dimuon invariant mass squared, q 2. A first measurement of the zero-crossing point of the forward-backward asymmetry of the dimuon system is also presented. The zero-crossing point is measured to be q20=4.9±0.9GeV2/c4 , where the uncertainty is the sum of statistical and systematic uncertainties. The results are consistent with the Standard Model predictions

Opposite-side flavour tagging of B mesons at the LHCb experiment

The calibration and performance of the oppositeside flavour tagging algorithms used for the measurements of time-dependent asymmetries at the LHCb experiment are described. The algorithms have been developed using simulated events and optimized and calibrated with B + →J/ψK +, B0 →J/ψK ∗0 and B0 →D ∗− μ + νμ decay modes with 0.37 fb−1 of data collected in pp collisions at √ s = 7 TeV during the 2011 physics run. The oppositeside tagging power is determined in the B + → J/ψK + channel to be (2.10 ± 0.08 ± 0.24) %, where the first uncertainty is statistical and the second is systematic

Search for CP violation in D+→ϕπ+ and D+s→K0Sπ+ decays

A search for CP violation in D + → ϕπ + decays is performed using data collected in 2011 by the LHCb experiment corresponding to an integrated luminosity of 1.0 fb−1 at a centre of mass energy of 7 TeV. The CP -violating asymmetry is measured to be (−0.04 ± 0.14 ± 0.14)% for candidates with K − K + mass within 20 MeV/c 2 of the ϕ meson mass. A search for a CP -violating asymmetry that varies across the ϕ mass region of the D + → K − K + π + Dalitz plot is also performed, and no evidence for CP violation is found. In addition, the CP asymmetry in the D+s→K0Sπ+ decay is measured to be (0.61 ± 0.83 ± 0.14)%

Measurement of the Bs0→J/ψKS0B_s^0\to J/\psi K_S^0 branching fraction

The $B_s^0\to J/\psi K_S^0$ branching fraction is measured in a data sample corresponding to 0.41$fb^{-1}$ of integrated luminosity collected with the LHCb detector at the LHC. This channel is sensitive to the penguin contributions affecting the sin2$\beta$ measurement from $B^0\to J/\psi K_S^0$ The time-integrated branching fraction is measured to be $BF(B_s^0\to J/\psi K_S^0)=(1.83\pm0.28)\times10^{-5}$. This is the most precise measurement to date

Measurement of the CP-violating phase \phi s in Bs->J/\psi\pi+\pi- decays

Measurement of the mixing-induced CP-violating phase phi_s in Bs decays is of prime importance in probing new physics. Here 7421 +/- 105 signal events from the dominantly CP-odd final state J/\psi pi+ pi- are selected in 1/fb of pp collision data collected at sqrt{s} = 7 TeV with the LHCb detector. A time-dependent fit to the data yields a value of phi_s=-0.019^{+0.173+0.004}_{-0.174-0.003} rad, consistent with the Standard Model expectation. No evidence of direct CP violation is found.Comment: 15 pages, 10 figures; minor revisions on May 23, 201

Measurement of the CP-violating phase phi_s in the decay Bs->J/psi phi

We present a measurement of the time-dependent CP-violating asymmetry in B_s -> J/psi phi decays, using data collected with the LHCb detector at the LHC. The decay time distribution of B_s -> J/psi phi is characterized by the decay widths Gamma_H and Gamma_L of the heavy and light mass eigenstates of the B_s-B_s-bar system and by a CP-violating phase phi_s. In a sample of about 8500 B_s -> J/psi phi events isolated from 0.37 fb^-1 of pp collisions at sqrt(s)=7 TeV we measure phi_s = 0.15 +/- 0.18 (stat) +/- 0.06 (syst) rad. We also find an average B_s decay width Gamma_s == (Gamma_L + Gamma_H)/2 = 0.657 +/- 0.009 (stat) +/- 0.008 (syst) ps^-1 and a decay width difference Delta Gamma_s == Gamma_L - Gamma_H} = 0.123 +/- 0.029 (stat) +/- 0.011 (syst) ps^-1. Our measurement is insensitive to the transformation (phi_s,DeltaGamma_s --> pi - phi_s, - Delta Gamma_s.Comment: 9 pages, 3 figure

Search for CP violation in D+→K−K+π+D^{+} \to K^{-}K^{+}\pi^{+} decays

A model-independent search for direct CP violation in the Cabibbo suppressed decay $D^+ \to K^- K^+\pi^+$ in a sample of approximately 370,000 decays is carried out. The data were collected by the LHCb experiment in 2010 and correspond to an integrated luminosity of 35 pb$^{-1}$. The normalized Dalitz plot distributions for $D^+$ and $D^-$ are compared using four different binning schemes that are sensitive to different manifestations of CP violation. No evidence for CP asymmetry is found.Comment: 13 pages, 8 figures, submitted to Phys. Rev.