The sample monomode and an associated test for discrete monomodality

Abstract

The notions of (sample) mean, median and mode are common tools for describing the central tendency of a given probability distribution. In this article, we propose a new measure of central tendency, the sample monomode, which is related to the notion of sample mode. We also illustrate the computation of the sample monomode and propose a statistical test for discrete monomodality based on the likelihood ratio statistic.     

Iterative bias reduction: a comparative study

Multivariate nonparametric smoothers, such as kernel based smoothers and thin plate splines smoothers, are adversely impacted by the sparseness of data in high dimension, also known as the curse of dimensionality. Adaptive smoothers, that can exploit the underlying smoothness of the regression function, may partially mitigate this effect. This paper presents a comparative simulation study of a novel adaptive smoother (IBR) with competing multivariate smoothers available as package or function within the R language and environment for statistical computing. Comparison between the methods are made on simulated datasets of moderate size, from 50 to 200 observations, with two, five or 10 potential explanatory variables, and on a real dataset. The results show that the good asymptotic properties of IBR are complemented by a very good behavior on moderate sized datasets, results which are similar to those obtained with Duchon low rank splines.     

Max‐infinitely divisible models and inference for spatial extremes

For many environmental processes, recent studies have shown that the dependence strength is decreasing when quantile levels increase. This implies that the popular max‐stable models are inadequate to capture the rate of joint tail decay, and to estimate joint extremal probabilities beyond observed levels. We here develop a more flexible modeling framework based on the class of max‐infinitely divisible processes, which extend max‐stable processes while retaining dependence properties that are natural for maxima. We propose two parametric constructions for max‐infinitely divisible models, which relax the max‐stability property but remain close to some popular max‐stable models obtained as special cases. The first model considers maxima over a finite, random number of independent observations, while the second model generalizes the spectral representation of max‐stable processes. Inference is performed using a pairwise likelihood. We illustrate the benefits of our new modeling framework on Dutch wind gust maxima calculated over different time units. Results strongly suggest that our proposed models outperform other natural models, such as the Student‐t copula process and its max‐stable limit, even for large block sizes.     

Constructions of ‘the ageless’ asylum seekers: An analysis of how age is understood among professionals working within the norwegian immigration authorities

This article explores how professionals within the Norwegian immigration authorities conceptualise age when doing non-medical age assessments. By using social constructivism, which challenges an ethnocentric quantifying understanding of age, we delve into how socially constructed perceptions of childhood and adulthood manifest in assessment practices and the implications of these. By examining how applicants’ physical appearance, body language and life experience are used as an assessment basis, we argue that the ways age is conceptualised relate to Western ideas and ideals while overlooking other social and cultural backgrounds in which age is embedded.     

Unemployment and Earnings Assimilation of Immigrants

The regional unemployment elasticity of annual earnings for non‐OECD immigrants is found to be more than three times larger than for natives, using micro data covering all immigrants in Norway in 1990 and a random sample of natives. The decline in relative earnings of non‐OECD immigrants from 1980 to 1990 can largely be explained by the stronger impact of rising unemployment on immigrant earnings. These results highlight the importance of controlling for different period effects caused by fluctuating unemployment in panel studies of earnings assimilation among immigrants.     

Quality of Life as Medicine: Interventions that Induce Salutogenesis. A Review of the Literature

This paper reviews the medical (salutogenic) effect of interventions that aim to improve quality of life. Review of studies where the global quality of life in chronically ill patients was improved independently of subjective and objective factors (like physical and mental health, yearly income, education, social network, self-esteem, sexual ability and problems or work). The methods used were subtypes of integrative medicine (non-drug CAM) like mind body medicine, body psychotherapy, clinical holistic medicine, consciousness-based medicine and sexology. In about 20 papers on QOL as medicine, in cancer, coronary heart disease, chronic pain, mental illness, sexual dysfunction, low self-esteem, low working ability and poor QOL, the most successful intervention strategy seems to be to create a maternal, infantile bonding induced by a combination of conversation therapy and bodywork. The papers examined the treatments of over 2,000 chronically ill or dysfunctional patients and more than 20 different types of health problems. Global QOL measured by SEQOL, QOL5, QOL1, self-rated physical health, self-rated mental health, self-rated sexual functioning, anorgasmia, genital pain, self-rated working ability, self-rated relation to self, well-being, life-satisfaction, happiness, fulfillment of needs, experience of temporal and spatial domains, expression of life’s potentials, and objective functioning. We found “QOL as medicine” able in the treatment of physical disorders and illnesses including chronic pain (Number Needed to Treat (NNT) = 1–3, Number Needed to Harm (NNH) > 500), in mental illness (NNT = 1–3, NNH > 500), in sexual dysfunctions (NNT = 1–2, NNH > 1,000), self-rated low working ability (NNT = 2, NNH > 500), and self-rated low QOL (NNT = 2, NNH > 2,000). We found that QOL improving interventions helped or cured 30–90% of the patients, typically within one year, independent of the type of health problem. “QOL as medicine” seems to be able in improving chronic mental, somatic and sexual health issues without side effects.     

The role of local stakeholders in transforming economic upgrading into social upgrading in Ethiopian textile and garment firms

The authors examine the links between economic and social upgrading in a developing country with stringent industry policy and employment legislation, focusing on the strategies of local firms participating in global apparel production networks. Based on the 2015 case studies of five textile and garment firms in Ethiopia, they find that employment security and physical well-being were driven mainly by government labour regulations negotiated by local employers, workers and trade unions rather than by global buyers and conclude that upgrading and downgrading can occur simultaneously within a firm.