What is a housing bubble?

A Oust, K Hrafnkelsson - 2017 - ntnuopen.ntnu.no
The aim of this paper is to look at the developments in previous housing price cycles to improve
our understanding, and to create a descriptive definition, of what a house price bubble is …

Hedge fund strategies and time-varying alphas and betas

S Frydenberg, K Hrafnkelsson… - The Journal of …, 2017 - search.proquest.com
This article compares the time-varying estimates of alphas and betas for hedge funds in bear
and bull market periods. The time-varying models show that most hedge fund strategies …

An Icelandic example of the impact of population structure on association studies

…, B Hrafnkelsson, J Gulcher, K Stefánsson - Nature …, 2005 - nature.com
… We determined an individual's geographic ancestry by tracing his or her ancestral
genealogy k generations back in time, yielding a maximum number of 2 k ancestors in the kth …

Effectiveness of a partnership‐based self‐management programme for patients with mild and moderate chronic obstructive pulmonary disease: a pragmatic …

…, BS Halldorsdottir, B Hrafnkelsson… - Journal of advanced …, 2015 - Wiley Online Library
Aims To evaluate the effectiveness of a 6‐month, partnership‐based self‐management
programme for patients with mild and moderate chronic obstructive pulmonary disease. …

Common variants on chromosomes 2q35 and 16q12 confer susceptibility to estrogen receptor–positive breast cancer

…, H Sigurdsson, T Jonsdottir, J Hrafnkelsson… - Nature …, 2007 - nature.com
Familial clustering studies indicate that breast cancer risk has a substantial genetic
component 1 , 2 , 3 . To identify new breast cancer risk variants, we genotyped approximately …

Ad click prediction: a view from the trenches

…, D Liu, M Wattenberg, AM Hrafnkelsson… - Proceedings of the 19th …, 2013 - dl.acm.org
… passes a threshold k, the coefficient is fixed at zero, but after the count passes k, online gradient
… We tuned k to produce equal accuracy to FTRL-Proximal; using a larger k leads to worse …

Common variants on 9q22. 33 and 14q13. 3 predispose to thyroid cancer in European populations

…, JI Mayordomo, A De La Chapelle, J Hrafnkelsson… - Nature …, 2009 - nature.com
In order to search for sequence variants conferring risk of thyroid cancer we conducted a
genome-wide association study in 192 and 37,196 Icelandic cases and controls, respectively, …

Common variants on chromosome 5p12 confer susceptibility to estrogen receptor–positive breast cancer

…, H Sigurdsson, T Jonsdottir, J Hrafnkelsson… - Nature …, 2008 - nature.com
We carried out a genome-wide association study of breast cancer predisposition with
replication and refinement studies involving 6,145 cases and 33,016 controls and identified two …

Discovery of common variants associated with low TSH levels and thyroid cancer risk

…, RT Netea-Maier, A De La Chapelle, J Hrafnkelsson… - Nature …, 2012 - nature.com
To search for sequence variants conferring risk of nonmedullary thyroid cancer, we focused
our analysis on 22 SNPs with a P < 5 × 10 −8 in a genome-wide association study on levels …

Psychometric development of the Iceland-family perceived support questionnaire (ICE-FPSQ)

…, EK Svavarsdottir, B Hrafnkelsson - Journal of Family …, 2012 - journals.sagepub.com
Valid and reliable instruments are needed to measure how family members perceive support
from nurses when a family member is experiencing serious illness. The purpose of this …